Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 20 de 137
Filtrar
1.
Thyroid ; 34(8): 1038-1046, 2024 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-38877800

RESUMEN

Background: Resistance to thyroid hormone beta (RTHß) is a rare disease resulting from mutations in the THRB gene, characterized by reduced T3 action in tissues with high thyroid hormone receptor ß expression. Thyroid hormones regulate body composition and metabolism in general, and increased or decreased hormone levels are associated with insulin resistance. This study evaluated the presence of cardiometabolic risk factors and insulin sensitivity in patients with RTHß. Methods: In all, 16 patients, 8 adults (52.3 ± 16.3 years of age) and 8 children (10.9 ± 3.9 years of age), were compared to 28 control individuals matched for age, sex, and body mass index (BMI). Anthropometry evaluation and blood samples were collected for glycemia, lipids, insulin, interleukin-6 (IL-6), tumor necrosis factor-alpha (TNF-α), leptin, adiponectin, ultrasensitive C-reactive protein (CRPus), free thyroxine, total triiodothyronine, thyrotropin, and anti-thyroid peroxidase measurements. Body composition was assessed using dual-emission X-ray absorptiometry and bioimpedance. Insulin sensitivity was evaluated in adult patients and controls using the hyperinsulinemic-euglycemic clamp (HEC), whereas homeostasis model assessment of insulin resistance (HOMA-IR) was calculated in all individuals studied. Results: Patients and controls presented similar weight, BMI, abdominal perimeter, and total fat body mass. Patients with RTHß demonstrated higher total cholesterol (TC), p = 0.04, and low-density lipoprotein cholesterol (LDL-C), p = 0.03, but no alteration was observed in other parameters associated with metabolic risk, such as leptin, TNF-α, and CRPus. Two adult patients met the criteria for metabolic syndrome. There was no evidence of insulin resistance assessed by HEC or HOMA-IR. Elevated IL-6 levels were observed in patients with RTHß. Conclusion: Using HEC as the gold standard method, no evidence of reduced insulin sensitivity in skeletal muscle was documented in RTHß adult patients; however, higher levels of TC and LDL-C were observed in these patients, which suggest the need for active monitoring of this abnormality to minimize cardiometabolic risk. In addition, we demonstrated, for the first time, that the increase in IL-6 levels in patients with RTHß is probably secondary to metabolic causes as they have normal levels of TNF-α and CRPus, which may contribute to an increase in cardiovascular risk. A larger number of patients must be studied to confirm these results.


Asunto(s)
Factores de Riesgo Cardiometabólico , Técnica de Clampeo de la Glucosa , Resistencia a la Insulina , Síndrome de Resistencia a Hormonas Tiroideas , Humanos , Masculino , Femenino , Adulto , Síndrome de Resistencia a Hormonas Tiroideas/sangre , Síndrome de Resistencia a Hormonas Tiroideas/complicaciones , Persona de Mediana Edad , Niño , Anciano , Adolescente , Composición Corporal , Estudios de Casos y Controles , Insulina/sangre , Glucemia/metabolismo , Glucemia/análisis , Factores de Riesgo
2.
Endocrinol Diabetes Nutr (Engl Ed) ; 70(10): 628-633, 2023 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-38065628

RESUMEN

INTRODUCTION: Weight gain and changes in body composition are associated with the onset of diabetes after kidney transplantation, and detailing these changes can help prevent this situation. The study aimed to assess the prevalence of diabetes mellitus after kidney transplantation and changes in the nutritional status and body composition in patients with diabetes one year from surgery. MATERIALS AND METHODS: This survey was a single-center, prospective cohort study. Twenty-nine patients over 18 years old who underwent isolated kidney transplantation, without diabetes, were included and followed up for one year. At hospital discharge after transplantation and one year later, anthropometric (weight, height and abdominal circumference), body composition (electrical bioimpedance), routine biochemical and dietary intake assessments were performed. RESULTS: Most of the patients were male (75%), and the mean age was 48.0±11.8 years old. In the first-year post-surgery 27.6% of patients had DM and the diagnosis was made, on average, 4 months after transplantation. The group with diabetes had, from the beginning to the end of the study, greater weight and body fat, especially abdominal fat. The non-diabetic group, after one year, showed an increase in phase angle, body weight and body masses, more pronounced of fat-free mass, when compared with fat mass gain. CONCLUSIONS: Both groups showed weight gain, but in the non-diabetic group these changes can be interpreted as an improvement in the nutritional profile. Metabolic abnormalities associated with immunosuppression and eating habits, combination that maintains increased the risk for diabetes for long time, keeping this group with priority in nutritional care.


Asunto(s)
Diabetes Mellitus , Estado Nutricional , Humanos , Masculino , Adulto , Persona de Mediana Edad , Adolescente , Femenino , Estudios Prospectivos , Diabetes Mellitus/epidemiología , Diabetes Mellitus/etiología , Composición Corporal , Aumento de Peso
3.
PLoS One ; 18(8): e0290081, 2023.
Artículo en Inglés | MEDLINE | ID: mdl-37590220

RESUMEN

Environmental heat stress impairs endurance performance by enhancing exercise-induced physiological and perceptual responses. However, the time course of these responses during self-paced running, particularly when comparing hot and temperate conditions, still needs further clarification. Moreover, monitoring fatigue induced by exercise is paramount to prescribing training and recovery adequately, but investigations on the effects of a hot environment on post-exercise neuromuscular fatigue are scarce. This study compared the time course of physiological and perceptual responses during a 10 km self-paced treadmill run (as fast as possible) between temperate (25°C) and hot (35°C) conditions. We also investigated the changes in countermovement jump (CMJ) performance following exercise in these two ambient temperatures. Thirteen recreational long-distance runners (11 men and 2 women), inhabitants of a tropical region, completed the two experimental trials in a randomized order. Compared to 25°C, participants had transiently higher body core temperature (TCORE) and consistently greater perceived exertion while running at 35°C (p < 0.05). These changes were associated with a slower pace, evidenced by an additional 14 ± 5 min (mean ± SD) to complete the 10 km at 35°C than at 25°C (p < 0.05). Before, immediately after, and 1 h after the self-paced run, the participants performed CMJs to evaluate lower limb neuromuscular fatigue. CMJ height was reduced by 7.0% (2.3 ± 2.4 cm) at 1 h after the race (p < 0.05) compared to pre-exercise values; environmental conditions did not influence this reduction. In conclusion, despite the reduced endurance performance, higher perceived exertion, and transiently augmented TCORE caused by environmental heat stress, post-exercise neuromuscular fatigue is similar between temperate and hot conditions. This finding suggests that the higher external load (faster speed) at 25°C compensates for the effects of more significant perceptual responses at 35°C in inducing neuromuscular fatigue.


Asunto(s)
Fatiga Muscular , Carrera , Masculino , Humanos , Femenino , Esfuerzo Físico , Ejercicio Físico , Ambiente
4.
J Med Entomol ; 60(5): 910-916, 2023 09 12.
Artículo en Inglés | MEDLINE | ID: mdl-37417297

RESUMEN

We evaluated the effects of seasonality on the richness and abundance of dipterans of the families Calliphoridae and Mesembrinellidae associated with the decomposition of a clothed Large White swine Sus scrofa domesticus(Artiodactyla: Suidae) carcass. Experiments were carried out in less rainy, rainy, and intermediate periods between 2010 and 2011 at Reserva Florestal Ducke, Manaus, Amazonas. Two pig carcasses, each weighing approximately 40 kg, were used in each period. A total of 63,872 individuals of 18 species of Calliphoridae and Mesembrinellidae were collected. The abundance and richness of these dipteran families were influenced by the interaction between period and decomposition stage. The compositions of the Calliphoridae and Mesembrinellidae assemblages differed among periods, with the fauna of the less rainy period being less similar to those of the intermediate and rainy periods than they were to each other. Three species were selected as indicators for the less rainy period, namely Paralucilia pseudolyrcea (Mello, 1969) (Diptera, Calliphoridae), Paralucilia nigrofacialis (Mello, 1969) (Diptera, Calliphoridae), and Eumesembrinella randa (Walker, 1849) (Diptera,Mesembrinellidae) while Chloroprocta idioidea (Robineau-Desvoidy, 1830) (Dipetra, Calliphoridae) was selected as an indicator species for the rainy period; no taxon was selected as an indicator of the intermediate period. Among decomposition stages, only fermentation and black putrefaction had indicator taxa, with Hemilucilia souzalopesi Mello, 1972 (Diptera, Calliphoridae and Chysomya putoria(Wiedemann, 1830) (Diptera, Calliphoridae), respectively. Clothes did not prevent the laying of eggs and became a kind of protection for immature stages. The clothed model presented a delay in decomposition compared to other studies developed in the Amazon region.


Asunto(s)
Dípteros , Animales , Calliphoridae , Estaciones del Año , Cadáver , Bosques , Modelos Animales
5.
Animals (Basel) ; 13(6)2023 Mar 15.
Artículo en Inglés | MEDLINE | ID: mdl-36978604

RESUMEN

This study investigated the seasonal variations in mRNA expression of FSH (Fshr), LH (Lhr) receptors, melatonin (Mt1 and Mt2) receptors, melatonin-synthetizing enzymes (Asmt and Aanat) and melatonin concentration in developing follicles from mares raised in natural photoperiods. For one year, ultrasonographic follicular aspiration procedures were performed monthly, and small (<20 mm), medium (20 to 35 mm) and large (>35 mm) follicles were recovered from five mares. One day before monthly sample collections, an exploratory ultrasonography conducted to record the number and the size of all follicles larger than 15 mm. The total number of large follicles were higher during the spring/summer (8.2 ± 1.9) than during autumn/winter (3.0 ± 0.5). Compared to autumn/winter seasons, there was an increase of Fshr and Aanat mRNA expressions in small, medium and large follicles, an increase of Lhr and Asmt mRNA expressions in medium and large follicles and an increase of Mt1 and Mt2 mRNA expressions in small and large follicles during spring/summer. The melatonin levels in follicular fluid were also higher during the spring/summer seasons. The present data show that melatonin locally upregulates the mRNA expression of Mt1 and Mt2 receptors and melatonin-forming enzymes in mare developing follicles during reproductive seasons.

6.
Exp Brain Res ; 241(4): 1173-1183, 2023 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-36912948

RESUMEN

Impairments in several domains of cognitive functions are observed in people with Type 2 Diabetes Mellitus (T2DM), often accompanied by low Brain-derived neurotrophic factor (BDNF) concentrations. Although aerobic and resistance exercise enhances cognitive functions and raises BDNF concentrations in several populations, it remained uncertain in T2DM subjects. This study compared the effects of a single bout of aerobic (AER, 40 min of treadmill walk at 90-95% of the maximum walk speed) or resistance (RES, 3 × 10 repetitions in eight exercises at 70% of 10-RM) exercise on specific cognitive domain performance and plasma BDNF concentrations of physically active T2DM subjects. Eleven T2DM subjects (9 women/2 men; 63 ± 7 years) performed two counterbalanced trials on non-consecutive days. Stroop Color and Word (SCW) task [assessing the attention (congruent condition) and inhibitory control (incongruent condition)], Visual response time (assessing the response time), and blood collection (for plasma BDNF concentrations) were performed pre and post-exercise sessions. With distinct magnitude, both AER and RES improved the incongruent-SCW (d = - 0.26 vs. - 0.43 in AER and RES, respectively; p < 0.05), RT(best) (d = - 0.31 vs. - 0.52, p < 0.05), and RT(1-5) (d = - 0.64 vs. - 0.21, p < 0.05). The congruent-SCW and RT(6-10) were not statistically different. Plasma BDNF concentrations were elevated 11% in AER (d = 0.30) but decreased by 15% in RES (d = - 0.43). A single session of aerobic or resistance exercise similarly improved the inhibitory control and response time of physically active T2DM subjects. Nevertheless, aerobic and resistance exercise sessions induced an opposite clinical effect in plasma BDNF concentrations.


Asunto(s)
Diabetes Mellitus Tipo 2 , Entrenamiento de Fuerza , Masculino , Persona de Mediana Edad , Humanos , Femenino , Anciano , Diabetes Mellitus Tipo 2/terapia , Factor Neurotrófico Derivado del Encéfalo , Tiempo de Reacción , Ejercicio Físico/fisiología
7.
Oral Dis ; 29(5): 2265-2271, 2023 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-35332642

RESUMEN

OBJECTIVE: This study aimed to assess whether microcephaly is a risk factor for alterations in the chronology and sequence of tooth eruption and for developmental defects of enamel. MATHERIALS AND METHODS: In this case-control study, 81 children aged 30-36 months, including 40 normoreactive children and 41 with microcephaly, were submitted to oral clinical examination to determine the frequency of alterations in the chronology and sequence of tooth eruption and developmental enamel defects. The sample was matched for sex and age (1:1) and allocated to the case (presence of dental alterations) and control (absence of dental alterations) groups. Gestational age, birthweight and socioeconomic characteristics were also analyzed. Chi-square test and Fisher's exact test were applied (α = 0.05). RESULTS: Microcephaly was significantly associated with delayed tooth eruption, alterations in the sequence of tooth eruption, and defects in dental enamel (p < 0.001). Low birthweight also showed a significant association with this alterations (p < 0.005) and prematurity was associated with defects in enamel development (p < 0.005). CONCLUSION: Microcephaly is a risk factor for alterations in the tooth eruption process and enamel formation in primary teeth.


Asunto(s)
Hipoplasia del Esmalte Dental , Microcefalia , Anomalías Dentarias , Niño , Humanos , Hipoplasia del Esmalte Dental/epidemiología , Peso al Nacer , Microcefalia/epidemiología , Microcefalia/complicaciones , Estudios de Casos y Controles , Anomalías Dentarias/complicaciones , Factores de Riesgo , Diente Primario
8.
Rev. adm. pública (Online) ; 57(2): e2022-0238, 2023. tab, graf
Artículo en Portugués | LILACS | ID: biblio-1441094

RESUMEN

Resumo Neste estudo busca-se desenvolver uma revisão da literatura baseada na análise bibliométrica sobre o tema da transparência e da accountability no contexto da governance dos hospitais públicos, procurando identificar linhas de investigação, teoria, método de investigação e lacunas existentes por intermédio da análise das publicações científicas datadas até 2020. A investigação seguiu o referencial teórico da transparência e da accountability no setor público com o intuito de compreender o seu enquadramento no contexto da governance dos hospitais. Com recurso ao software Bibliometrix e terminado o processo de consulta dos artigos nas bases de dados Scopus e WoS, foram selecionados 118 artigos para este estudo. Constatou-se que, no período entre 2017-2020, cerca de 85% das publicações são de base qualitativa e há uma tendência crescente no estudo da transparência e da accountability na governança dos hospitais públicos. A transparência surge frequentemente interligada à responsabilização dos agentes (accountability), às políticas de comunicação externa (relatórios públicos) e interna, assim como à sua compreensibilidade. Verificou-se a ainda predominância das publicações de origem norte-americana e chinesa. O estudo identifica também a escassez de investigação baseada em modelos quantitativos que explorem relações de dependência entre as dimensões estudadas, limitando a compreensão da interdependência entre as práticas de transparência e os atributos internos e externos das organizações. O estudo contribui para o conhecimento sobre interações entre transparência, accountability e prestação de contas na governança dos hospitais públicos.


Resumen El objetivo de este estudio es desarrollar una revisión bibliográfica basada en el análisis bibliométrico sobre el tema de la transparencia y la rendición de cuentas en el ámbito de la gobernanza de los hospitales públicos, buscando identificar líneas de investigación, teorías, métodos de investigación y lagunas existentes a través del análisis de las publicaciones científicas fechadas hasta 2020. La investigación siguió el referencial teórico de la transparencia y la rendición de cuentas en el sector público para comprender su marco en el ámbito de la gobernanza de los hospitales. Recurriendo al software Bibliometrix, y tras el proceso de consulta de los artículos en las bases de datos Scopus y WoS, se seleccionaron 118 artículos de interés para este estudio. Se constató que, en el periodo comprendido entre 2017 y 2020, aproximadamente el 85% de las publicaciones son de base cualitativa y existe una tendencia creciente en el estudio de la transparencia y la rendición de cuentas en el ámbito de la gobernanza de los hospitales públicos. La transparencia aparece a menudo interconectada con la responsabilidad de los agentes (rendición de cuentas), las políticas de comunicación externa (informes públicos) e interna, así como su comprensibilidad. También se observó el predominio de publicaciones de origen norteamericano y chino. El estudio también identifica la escasez de investigaciones que utilicen modelos cuantitativos que exploren las relaciones de dependencia entre las dimensiones estudiadas, lo que limita la comprensión de la interdependencia entre las prácticas de transparencia y los atributos internos y externos de las organizaciones. El estudio contribuye al conocimiento de las interacciones entre transparencia, rendición de cuentas y reporte en el ámbito de la gobernanza de los hospitales públicos.


Abstract This study develops a literature review based on bibliometric analysis on the theme of transparency and accountability within the scope of governance of public hospitals, seeking to identify research lines, theories, research methods, and existing gaps through the analysis of scientific publications until 2020. The investigation followed the theoretical lens of transparency and accountability in the public sector to understand its framework within the scope of the governance of hospitals. Using the Bibliometrix software, and after the consultation process of the articles published in the Scopus and WoS databases, a sample with 118 articles was selected. It was found that, in the period between 2017-2020, approximately 85% of the publications were qualitative, and there is a growing trend in the study of transparency and accountability within the scope of governance of public hospitals. Transparency often appears interconnected with the accountability of agents (accountability), external communication policies (public reports), internal communication policies, and their comprehensibility. The predominance of publications of North American and Chinese origin was also noted. The study also identifies the scarcity of research using quantitative models that explore dependency relationships between the dimensions studied, limiting the comprehensibility of the interdependence between transparency practices and organizations' internal and external attributes. The study contributes to the knowledge about the interactions between transparency, accountability, and reporting within the scope of governance of public hospitals.


Asunto(s)
Bibliometría , Contabilidad de Pagos y Cobros
9.
Front Pediatr ; 10: 944818, 2022.
Artículo en Inglés | MEDLINE | ID: mdl-36340716

RESUMEN

Introduction: In a low-income setting with simultaneous presence of Dengue virus, Zika virus, and Chikungunya virus (CHIKV) in the same region, the difficulty of establishing a clinical diagnosis when the molecular test is not a possibility. Thus, it is important to identify signs and symptoms of Chikungunya that can be used to differentiate it from other arboviruses in children. Methods: This is a cross-sectional study, which was developed in Rio de Janeiro State, Brazil, with the analysis of pediatric medical records regarding arboviruses. Considering that the population had already been exposed to Dengue and Zika viruses and were experiencing the first notification of the CHIKV. The ethics committee approved this research, and all those legally responsible for the children signed the consent form. Results: In total, 159 children were seen of which 98 were suspected CHIKV cases, and 51 had their diagnosis confirmed with reagent IgM/IgG for CHIKV. The symptoms that the pediatric population with CHIKV presented most often were fever (90.2%), arthralgia (76.5%), and exanthema (62.7%) in both suspected and confirmed cases of Chikungunya. Thus, CHIKV in those children presents a clinical profile similar to those found in other studies referring to adults. Additionally, only arthralgia and a high aspartate transaminase were related to the positivity of serology for Chikungunya. Conclusions: This study describes the signs and symptoms of CHIKV exhibited in the pediatric population with a mild and moderate presentation similar to the findings in the adult during an epidemic experienced in a population vulnerable to CHIKV.

10.
PLoS One ; 17(11): e0276931, 2022.
Artículo en Inglés | MEDLINE | ID: mdl-36318578

RESUMEN

The effects of congenital Zika syndrome (CZS) on the tooth development of infected children are not well known. The aim of this study was to analyze the association of CZS with dental alterations in children with microcephaly seen at a referral hospital in Rio Grande do Norte, Brazil. The chronology and sequence of tooth eruption and the presence of dental alterations were evaluated by a single calibrated examiner (kappa > 0.80) in 62 children aged 7 to 35 months with microcephaly associated with CZS and other congenital infections. Medical data of the mother and child were collected from the records and the parents responded to a socioeconomic questionnaire. Descriptive analysis and Fisher's exact test were used (5% significance level). The mean age of the children was 26.4 months (SD = 7.52). The mean weight and head circumference at birth were 2,593 g (SD = 0.60) and 29.6 cm (SD = 2.48), respectively. Microcephaly was associated with congenital Zika virus infection in 79% of cases and with other congenital infections in 21%. No significant association was found between CZS and alterations in the chronology (p = 1.00) or sequence of tooth eruption (p = 0.16) or changes in enamel development (p = 1.00). In conclusion, children with microcephaly exhibit a delay and alterations in the sequence of tooth eruption of primary teeth, as well as developmental defects of enamel, which are not associated with Zika virus infection.


Asunto(s)
Microcefalia , Complicaciones Infecciosas del Embarazo , Anomalías Dentarias , Infección por el Virus Zika , Virus Zika , Recién Nacido , Niño , Femenino , Humanos , Preescolar , Embarazo , Infección por el Virus Zika/complicaciones , Brasil , Madres
11.
Nutrients ; 14(13)2022 Jun 28.
Artículo en Inglés | MEDLINE | ID: mdl-35807851

RESUMEN

Dietary restriction (DR) reduces adiposity and improves metabolism in patients with one or more symptoms of metabolic syndrome. Nonetheless, it remains elusive whether the benefits of DR in humans are mediated by calorie or nutrient restriction. This study was conducted to determine whether isocaloric dietary protein restriction is sufficient to confer the beneficial effects of dietary restriction in patients with metabolic syndrome. We performed a prospective, randomized controlled dietary intervention under constant nutritional and medical supervision. Twenty-one individuals diagnosed with metabolic syndrome were randomly assigned for caloric restriction (CR; n = 11, diet of 5941 ± 686 KJ per day) or isocaloric dietary protein restriction (PR; n = 10, diet of 8409 ± 2360 KJ per day) and followed for 27 days. Like CR, PR promoted weight loss due to a reduction in adiposity, which was associated with reductions in blood glucose, lipid levels, and blood pressure. More strikingly, both CR and PR improved insulin sensitivity by 62.3% and 93.2%, respectively, after treatment. Fecal microbiome diversity was not affected by the interventions. Adipose tissue bulk RNA-Seq data revealed minor changes elicited by the interventions. After PR, terms related to leukocyte proliferation were enriched among the upregulated genes. Protein restriction is sufficient to confer almost the same clinical outcomes as calorie restriction without the need for a reduction in calorie intake. The isocaloric characteristic of the PR intervention makes this approach a more attractive and less drastic dietary strategy in clinical settings and has more significant potential to be used as adjuvant therapy for people with metabolic syndrome.


Asunto(s)
Síndrome Metabólico , Restricción Calórica , Dieta con Restricción de Proteínas , Proteínas en la Dieta , Humanos , Obesidad , Estudios Prospectivos
12.
Int J Mol Sci ; 23(13)2022 Jun 24.
Artículo en Inglés | MEDLINE | ID: mdl-35806020

RESUMEN

To investigate the role of the transient receptor potential channel vanilloid type 1 (TRPV1) in hepatic glucose metabolism, we analyzed genes related to the clock system and glucose/lipid metabolism and performed glycogen measurements at ZT8 and ZT20 in the liver of C57Bl/6J (WT) and Trpv1 KO mice. To identify molecular clues associated with metabolic changes, we performed proteomics analysis at ZT8. Liver from Trpv1 KO mice exhibited reduced Per1 expression and increased Pparα, Pparγ, Glut2, G6pc1 (G6pase), Pck1 (Pepck), Akt, and Gsk3b expression at ZT8. Liver from Trpv1 KO mice also showed reduced glycogen storage at ZT8 but not at ZT20 and significant proteomics changes consistent with enhanced glycogenolysis, as well as increased gluconeogenesis and inflammatory features. The network propagation approach evidenced that the TRPV1 channel is an intrinsic component of the glucagon signaling pathway, and its loss seems to be associated with increased gluconeogenesis through PKA signaling. In this sense, the differentially identified kinases and phosphatases in WT and Trpv1 KO liver proteomes show that the PP2A phosphatase complex and PKA may be major players in glycogenolysis in Trpv1 KO mice.


Asunto(s)
Gluconeogénesis , Proteoma , Canales Catiónicos TRPV , Animales , Expresión Génica , Gluconeogénesis/genética , Glucosa/metabolismo , Glucógeno/metabolismo , Hígado/metabolismo , Ratones , Ratones Endogámicos C57BL , Ratones Noqueados , Proteoma/metabolismo , Canales Catiónicos TRPV/genética , Canales Catiónicos TRPV/metabolismo
13.
Tempo psicanál ; 54(1): 110-133, jan.-jun. 2022. ilus
Artículo en Portugués | LILACS-Express | LILACS, Index Psicología - Revistas | ID: biblio-1450528

RESUMEN

Este artigo apresenta uma discussão sobre a leitura lacaniana da Aposta de Pascal e sobre a dimensão do desejo, destacando as condutas de risco da adolescência e, especialmente, aquilo que muitas vezes é colocado sob o nome de uma tentação diabólica. Neste percurso buscou-se uma aproximação entre psicanálise e literatura, utilizando-se de textos cujos personagens entregam suas almas em pactos diabólicos, como as obras O diabo Enamorado, de Cazotte (1772), O Fausto, de Goethe (1790-1832), O Mandarim (1880), de Eça de Queiroz, Grande Sertão Veredas (1956), de Guimarães Rosa e Os demônios (1871), de Dostoiévski. Para apontarmos como o desejo pode se articular pela via das tentações inconscientes, aproximamo-nos das lógicas das figuras diabólicas e, por meio das narrativas dos adolescentes, estabelecemos a sua possível relação com o luto impossível, a recorrência do tédio, o preço da riqueza, a afirmação viril e a disposição da revolta.


This article presents a discussion on the Lacanian reading of Pascal's Bet and on the dimension of desire, highlighting the risk behaviors of adolescence and, especially, what is often placed under the name of a diabolic temptation. In this path, an approximation between psychoanalysis and literature was sought using texts whose characters give their souls in diabolical pacts, such as the works The Devil in Love, by Cazotte (1772), Faust, by Goethe (1790-1832), The Mandarin (1880), by Eça de Queiroz, Grande Sertão Veredas (1956), by Guimarães Rosa and Demons (1871), by Dostoiesvski. In order to point out how desire can be articulated through unconscious temptations, we approach the logic of diabolic figures, and, through the adolescents' narratives, we establish their possible relationship with impossible mourning, the recurrence of boredom, the price of wealth, the manly statement and the disposition of the revolt.


Cet article présente une réflexion sur la lecture lacanienne du pari de Pascal et sur la dimension du désir, mettant en évidence les comportements à risque de l'adolescence et, surtout, ce qui est souvent nommé comme tentation diabolique ou défini comme tentation diabolique. Dans ce parcours, une approximation entre la psychanalyse et la littérature a été cherchée à l'aide de textes dont les personnages livrent leurs âmes à traversles pactes diaboliques, tels comme les œuvres Le Diable amoureux, de Cazotte (1772), Faust, de Goethe (1790-1832), Le Mandarin (1880), de Eça de Queiroz, Grande Sertão Veredas (1956) de Guimaraes Rosa et Les Démons (1871), de Dostoiesvski. Afin de montrer comment le désir peut s'articuler à travers les tentations inconscientes, nous abordons la logique des figures diaboliques et, à travers les récits des adolescents, nous établissons leur possible relation avec le deuil impossible, la récurrence de l'ennui, le prix de la richesse, l'affirmation virile et la disposition de la révolte.

14.
Front Mol Biosci ; 9: 800638, 2022.
Artículo en Inglés | MEDLINE | ID: mdl-35309508

RESUMEN

Background: A large research portfolio indicates that an activated renal renin-angiotensin system or a deficit on melatonin is associated with several cardiovascular pathologies. In this observational clinical study, we hypothesized that alterations in urinary melatonin or angiotensinogen levels may be altered in two common conditions, preeclampsia and gestational diabetes. Our study's primary objective was to assess melatonin and angiotensinogen as novel disease biomarkers detectable and quantifiable in the urine of pregnant women with or without pregnancy complications. Methods: This was a concurrent cohort study of pregnant women with selected obstetric pathologies (gestational diabetes, preeclampsia, hypertension and obesity with hypertension). A group of healthy controls was also included. Urinary 6-sulfatoxymelatonin and angiotensinogen were measured by sensitive and specific ELISAs in first morning void urine samples. The patients were included in the cohort consecutively, and the diagnosis was blinded at the level of urine collection. Urinary 6-sulfatoxymelatonin and angiotensinogen levels were investigated in the patients included in the cohort. Results: Urinary levels of angiotensinogen were significantly higher in the gestational diabetes [angiotensinogen/creatinine ratio median (25th, 75th): 0.11 (0.07, 0.18)] and preeclampsia [0.08 (0.06, 0.18)] groups than in those with healthy pregnancy [0.05(0.04, 0.06]; 6-sulfatoxymelatonin levels were significantly lower in the gestational diabetes [ug/h: median (25th, 75th): 0.12(0.08, 0.17)] and preeclampsia [0.12 (0.09, 0.15)] groups than in those with healthy pregnancy [0.20 (0.15, 0.27]. Neither morning void protein/creatinine ratio nor 24-h urine protein estimate were significantly different between the study groups. Conclusion: These results suggest that urinary angiotensinogen levels may indicate an intrarenal RAS activation while melatonin production appears to be defective in gestational diabetes or hypertension. An angiotensinogen/melatonin ratio is suggested as an early biomarker for identification of gestational diabetes or hypertension. This report provides a basis for the potential use of melatonin for the treatment of preeclampsia. A prospective study in a larger number of patients to determine the operative characteristics of these markers as potential diagnostic tests is justified.

15.
J Clin Endocrinol Metab ; 107(3): e1106-e1116, 2022 02 17.
Artículo en Inglés | MEDLINE | ID: mdl-34693966

RESUMEN

OBJECTIVE: Insulin sensitivity evaluation by hyperinsulinemic-euglycemic clamp in nonclassical congenital adrenal hyperplasia (NC-CAH) due to 21-hydroxilase deficiency. DESIGN AND SETTING: Cross-sectional study at university hospital outpatient clinics. PATIENTS AND METHODS: NC-CAH patients (25 females, 6 males; 24 ± 10 years) subdivided into C/NC (compound heterozygous for 1 classical and 1 nonclassical allele) and NC/NC (2 nonclassical alleles) genotypes were compared to controls. RESULTS: At diagnosis, C/NC patients presented higher basal and adrenocorticotropin-stimulated 17-hydroxyprogesterone and androstenedione levels than NC/NC genotype. Patients and controls presented similar weight, body mass index, abdominal circumference, and total fat body mass. NC-CAH patients showed higher waist-to-hip ratio, lower adiponectin and lower high-density lipoprotein cholesterol levels with no changes in fasting plasma glucose, glycated hemoglobin, homeostatic model assessment for insulin resistance, leptin, interleukin 6, tumor necrosis factor alpha, C-reactive protein, and carotid-intima-media thickness. All patients had used glucocorticoid (mean time of 73 months). Among the 22 patients with successful clamp, 13 were still receiving glucocorticoid-3 patients using cortisone acetate, 9 dexamethasone, and 1 prednisone (hydrocortisone equivalent dose of 5.5mg/m²/day), while 9 patients were off glucocorticoid but had previously used (hydrocortisone equivalent dose of 5.9mg/m2/day). The NC-CAH patients presented lower Mffm than controls (31 ± 20 vs 55 ± 23µmol/min-1/kg-1, P = 0.002). The Mffm values were inversely correlated with the duration of glucocorticoid treatment (r = -0.44, P = 0.04). There was association of insulin resistance and glucocorticoid type but not with androgen levels. CONCLUSION: Using the gold standard method, the hyperinsulinemic-euglycemic clamp, insulin resistance was present in NC-CAH patients and related to prolonged use and long-acting glucocorticoid treatment. Glucocorticoid replacement and cardiometabolic risks should be monitored regularly in NC-CAH.


Asunto(s)
Hiperplasia Suprarrenal Congénita/complicaciones , Glucocorticoides/efectos adversos , Resistencia a la Insulina , Adolescente , Hiperplasia Suprarrenal Congénita/tratamiento farmacológico , Adulto , Factores de Riesgo Cardiometabólico , Estudios Transversales , Femenino , Técnica de Clampeo de la Glucosa/estadística & datos numéricos , Humanos , Masculino , Adulto Joven
16.
Rev. chil. nutr ; 48(5)oct. 2021.
Artículo en Inglés | LILACS-Express | LILACS | ID: biblio-1388533

RESUMEN

ABSTRACT Atherogenic index of plasma is a marker used to assess risk of cardiovascular diseases. The present study evaluated plasma atherogenic index in individuals before and after bariatric surgery. Individuals were evaluated at three time points: before surgery (T0), in the 2nd (T1) and 6th (T2) months post-surgery. Anthropometric (body mass index, waist circumference, fat and lean mass) and biochemical parameters (lipid profile, glucose and C-reactive protein), and atherogenic index of plasma, calculated by the formula [=log (serum triglycerides concentration/HDL cholesterol)], were evaluated. Data were analyzed using the repeated measures ANOVA or Friedman test according to data distribution. The level of significance was 5%. Thirty-four patients agreed to participate. A significant reduction was observed in all anthropometric parameters in women and men (p<0.05). Atherogenic index of plasma reduced significantly in all time points in women; there was a significant reduction only between periods T0 and T2 (p<0.05) in men. A reduction in the classification for risk in cardiovascular diseases, with high risk in T0 (0.441±0.13) to moderate risk at T1 (0.204±0.22) and low risk at T2 (0.041±0.16) was observed in men. In women, the risk remained low (<0.11) in all periods. Bariatric surgery reduced the atherogenic index of plasma during the 6-month follow-up, suggesting a reduction in cardiovascular risk.


RESUMEN El índice aterogénico plasmático es un marcador que se utiliza para evaluar el riesgo de enfermedades cardiovasculares. El presente trabajo evaluó el índice aterogénico plasmático de pacientes antes y después de la cirugía bariátrica. Los individuos fueron evaluados en tres momentos: antes de la cirugía (T0), el segundo (T1) y el sexto (T2) meses después de la cirugía. Se evaluaron parámetros antropométricos (índice de masa corporal, circunferencia de cintura, masa grasa y masa magra), parámetros bioquímicos (perfil lipídico, glucosa y proteína C reactiva) y el índice aterogénico plasmático, calculado mediante la fórmula [= log (concentración sérica de triglicéridos / colesterol HDL)]. Los datos se analizaron mediante el ANOVA de medidas repetidas o el Test de Friedman según la distribución de los datos. Nivel de significancia adoptado 5%. Treinta y cuatro pacientes aceptaron participar en el estudio. Se observó una reducción significativa en todos los parámetros antropométricos en ambos sexos (p<0.05). En las mujeres, el índice aterogénico plasmático disminuyó significativamente en todos los períodos. En los hombres, hubo una reducción significativa en el índice aterogénico plasmático solo entre T0 y T2 (p<0.05), aunque se observó una reducción en la clasificación de riesgo para enfermedades cardiovasculares de alto riesgo en T0 (0.441±0.13) para moderadas riesgo en T1 (0.204±0.22) y riesgo bajo en T2 (0.041±0.16). En las mujeres, el riesgo se mantuvo bajo (<0.11) en todos los períodos. La cirugía bariátrica redujo la PIA durante el seguimiento de 6 meses, lo que sugiere una reducción del riesgo cardiovascular.

17.
Metab Brain Dis ; 36(8): 2283-2297, 2021 12.
Artículo en Inglés | MEDLINE | ID: mdl-34491479

RESUMEN

The current drug therapy for schizophrenia effectively treats acute psychosis and its recurrence; however, this mental disorder's cognitive and negative symptoms are still poorly controlled. Antipsychotics present important side effects, such as weight gain and extrapyramidal effects. The essential oil of Alpinia zerumbet (EOAZ) leaves presents potential antipsychotic properties that need further preclinical investigation. Here, we determined EAOZ effects in preventing and reversing schizophrenia-like symptoms (positive, negative, and cognitive) induced by ketamine (KET) repeated administration in mice and putative neurobiological mechanisms related to this effect. We conducted the behavioral evaluations of prepulse inhibition of the startle reflex (PPI), social interaction, and working memory (Y-maze task), and verified antioxidant (GSH, nitrite levels), anti-inflammatory [interleukin (IL)-6], and neurotrophic [brain-derived neurotrophic factor (BDNF)] effects of this oil in hippocampal tissue. The atypical antipsychotic olanzapine (OLZ) was used as standard drug therapy. EOAZ, similarly to OLZ, prevented and reversed most KET-induced schizophrenia-like behavioral alterations, i.e., sensorimotor gating deficits and social impairment. EOAZ had a modest effect on the prevention of KET-associated working memory deficit. Compared to OLZ, EOAZ showed a more favorable side effects profile, inducing less cataleptic and weight gain changes. EOAZ efficiently protected the hippocampus against KET-induced oxidative imbalance, IL-6 increments, and BDNF impairment. In conclusion, our data add more mechanistic evidence for the anti-schizophrenia effects of EOAZ, based on its antioxidant, anti-inflammatory, and BDNF up-regulating actions. The absence of significant side effects observed in current antipsychotic drug therapy seems to be an essential benefit of the oil.


Asunto(s)
Alpinia , Antipsicóticos , Aceites Volátiles , Animales , Antiinflamatorios/farmacología , Antiinflamatorios/uso terapéutico , Antioxidantes/farmacología , Antioxidantes/uso terapéutico , Antipsicóticos/farmacología , Antipsicóticos/uso terapéutico , Factor Neurotrófico Derivado del Encéfalo , Ratones , Aceites Volátiles/farmacología , Aceites Volátiles/uso terapéutico , Olanzapina
18.
J Comp Eff Res ; 10(15): 1159-1168, 2021 10.
Artículo en Inglés | MEDLINE | ID: mdl-34494888

RESUMEN

Aims: Cost-minimization analysis (CMA) comparing the teledermatology service of the State of Santa Catarina, Brazil with the provision of conventional care, from the societal perspective. Patients & methods: All costs related to direct patient care were considered in calculation of outpatient costs. The evaluation was performed using the parameters avoided referrals and profile of hospitalizations. The economic analysis was developed through a decision tree. Results: Totally, 40% of 79,411 tests performed could be managed in primary care, avoiding commuting and expanding the patients' access. The CMA showed the teledermatology service had a cost per patient of US$196.04, and the conventional care of US$245.66. Conclusion: In this scenario, teledermatology proved to be a cost-saving alternative to conventional care, reducing commuting costs.


Lay abstract Diagnosis and treatment of skin diseases through teledermatology avoid patient referrals, improves accessibility to specialized care, as well as the skin care provided by physicians. This study compared the costs of the teledermatology service of the State of Santa Catarina, Brazil with the costs of the provision of conventional care, to check which of them was more efficient. All costs related to direct patient care were considered in the calculation of costs. Totally, 40% of 79,411 dermatological tests performed could be locally managed in primary care, avoiding commuting, and expanding the patients' access to care. The teledermatology service had a cost per patient of US$196.04, compared with the cost of conventional care of US$245.66. In this evaluation, teledermatology proved to be cheaper than conventional care, reducing commuting costs.


Asunto(s)
Dermatología , Brasil , Análisis Costo-Beneficio , Humanos , Atención Primaria de Salud , Derivación y Consulta
19.
Trials ; 22(1): 283, 2021 Apr 15.
Artículo en Inglés | MEDLINE | ID: mdl-33858486

RESUMEN

BACKGROUND: The association of scaling and root planing (SRP) with systemic metronidazole (MTZ) plus amoxicillin (AMX) has shown to be an effective treatment protocol, particularly for periodontitis stages III and IV, generalized. More recently, probiotics have also been suggested as a promising adjunctive treatment for periodontal diseases due to their antimicrobial and anti-inflammatory properties. Therefore, the aim of this randomized clinical trial (RCT) is to evaluate the clinical, microbiological, and immunological effects of probiotics as adjuncts to SRP alone or with MTZ+AMX in the treatment of periodontitis. METHODS: Subjects with periodontitis are being randomly assigned to receive (i) SRP alone, or with (ii) two probiotic lozenges/day for 90 days (Prob), (iii) MTZ (400 mg) and AMX (500 mg) thrice a day (TID) for 14 days (MTZ+AMX), or (iv) Prob and MTZ+AMX. Subjects are being monitored for up to 12 months post-treatment. Nine subgingival plaque samples per patient are being collected at baseline and at 3, 6, and 12 months post-therapy and analyzed by checkerboard DNA-DNA hybridization for 40 bacterial species. Peripheral blood and gingival crevicular fluid (GCF) of four randomly selected periodontal sites will be analyzed by means of a multiplex fluorescent bead-based immunoassay for 17 cyto/chemokines. STATISTICAL ANALYSES: The significance of differences in each group (over the course of the study) will be sought using repeated measures ANOVA or Friedman tests and among groups (at each time point) using either ANOVA/ANCOVA or Kruskal-Wallis tests, depending on normality of the data. The chi-square test will be used to compare differences in the frequency of subjects achieving the clinical endpoint for treatment (≤ 4 sites with PD ≥ 5 mm) at 1 year and of self-perceived adverse effects. A stepwise forward logistic regression analysis will be performed in order to investigate the impact of different predictor variables on the percentage of patients achieving the clinical endpoint for treatment. The Number Needed to Treat (NNT) with different treatment protocols will be also calculated. Statistical significance will be set at 5%. TRIAL REGISTRATION: ClinicalTrials.gov NCT03733379. Registered on November 7, 2018.


Asunto(s)
Periodontitis Crónica , Probióticos , Amoxicilina/efectos adversos , Antibacterianos/efectos adversos , Raspado Dental , Método Doble Ciego , Humanos , Metronidazol/efectos adversos , Probióticos/efectos adversos , Ensayos Clínicos Controlados Aleatorios como Asunto , Aplanamiento de la Raíz
20.
J Pineal Res ; 71(1): e12717, 2021 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-33460489

RESUMEN

The endocrine pancreas of pregnant rats shows evident plasticity, which allows the morphological structures to return to the nonpregnant state right after delivery. Furthermore, it is well-known the role of melatonin in the maintenance of the endocrine pancreas and its tropism. Studies indicate increasing nocturnal serum concentrations of maternal melatonin during pregnancy in both humans and rodents. The present study investigated the role of melatonin on energy metabolism and in pancreatic function and remodeling during pregnancy and early lactation in rats. The results confirm that the absence of melatonin during pregnancy impairs glucose metabolism. In addition, there is a dysregulation in insulin secretion at various stages of the development of pregnancy and an apparent failure in the glucose-stimulated insulin secretion during the lactation period, evidencing the role of melatonin on the regulation of insulin secretion. This mechanism seems not to be dependent on the antioxidant effect of melatonin and probably dependent on MT2 receptors. We also observed changes in the mechanisms of death and cell proliferation at the end of pregnancy and beginning of lactation, crucial periods for pancreatic remodeling. The present observations strongly suggest that both functionality and remodeling of the endocrine pancreas are impaired in the absence of melatonin and its adequate replacement, mimicking the physiological increase seen during pregnancy, is able to reverse some of the damage observed. Thus, we conclude that pineal melatonin is important to metabolic adaptation to pregnancy and both the functionality of the beta cells and the remodeling of the pancreas during pregnancy and early lactation, ensuring the return to nonpregnancy conditions.


Asunto(s)
Células Secretoras de Insulina/metabolismo , Lactancia/metabolismo , Melatonina/metabolismo , Animales , Femenino , Glucosa/metabolismo , Secreción de Insulina/fisiología , Islotes Pancreáticos/metabolismo , Embarazo , Ratas , Ratas Wistar
SELECCIÓN DE REFERENCIAS
DETALLE DE LA BÚSQUEDA