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1.
Curr Mol Med ; 2024 Sep 09.
Artículo en Inglés | MEDLINE | ID: mdl-39252626

RESUMEN

Diabetes is a complex disease, despite the availability of numerous treatments, its progression and complications can only be mitigated and managed to a certain extent. After the onset, diabetes cannot be reversed. Its global expansion makes it challenging for governments to control the considerable costs of treating people with diabetes. Many studies have been carried out by widely recognized pharmaceutical companies that are considering the development of new drugs for diabetic treatments. Diets, sedentary habits, and lifestyles that are currently prevalent have an enormous influence on the global spread of diabetes. The tools available to clinicians for therapy do not solve the problem. It is known that a patient, when diagnosed, would already have had diabetes for more than three years. Studies on diabetes signaling consider the effects of hyperglycemia but also highlight the roles of insulin receptor activation and resistance. Understanding the intricate signaling network and its interactions with hyperglycemiainduced pathways is crucial. In this context, the cyclic AMP/AMPK axis emerges as a promising therapeutic target for diabetes. However, there is a noticeable lack of literature exploring the metabolic network induced by hyperglycemia and its interconnected pathways. Therefore, investigating the cyclic cAMP/AMPK axis could provide valuable insights, given its complex connections with various metabolic pathways. This mini-review aims to delve into the metabolic signaling of the AMPK/cAMP axis in the context of diabetes, highlighting its metabolic interactions and potential implications.

2.
Artículo en Inglés | MEDLINE | ID: mdl-39171600

RESUMEN

Amyotrophic Lateral Sclerosis (ALS) is a rare, progressive, and incurable disease. Sporadic (sALS) accounts for ninety percent of ALS cases, while familial ALS (fALS) accounts for around fifteen percent. Reports have identified over 30 different forms of familial ALS. Multiple types of fALS exhibit comparable symptoms with mutations in different genes and possibly with different predominant metabolic signals. Clinical diagnosis takes into account patient history but not genetic mutations, misfolded proteins, or metabolic signaling. As research on genetics and metabolic pathways advances, it is expected that the intricate complexity of ALS will compound further. Clinicians discuss whether a gene's presence is a cause of the disease or just an association or consequence. They believe that a mutant gene alone is insufficient to diagnose ALS. ALS, often perceived as a single disease, appears to be a complex collection of diseases with similar symptoms. This review highlights gene mutations, metabolic pathways, and muscle-neuron interactions.

3.
Clin Res Hepatol Gastroenterol ; 48(8): 102453, 2024 Aug 20.
Artículo en Inglés | MEDLINE | ID: mdl-39174006

RESUMEN

OBJECTIVE: Primary biliary cholangitis is a chronic and progressive autoimmune liver disease, whose prognosis can be improved by normalizing alkaline phosphatase and bilirubin. While ursodeoxycholic acid (UDCA) is first line standard of care, approximately 40 % of patients exhibit incomplete response. We aimed to identify prognostic markers for deep response to UDCA therapy at presentation. PATIENT AND METHODS: Data from the Brazilian Cholestasis Study Group cohort were analyzed retrospectively. Patients were assessed for deep response, defined as normal alkaline phosphatase and bilirubin, after 1 year of UDCA treatment. Additionally, the performance of the UDCA response score in predicting deep response was evaluated. RESULTS: A total of 297 patients were analyzed, with 57.2 % achieving an adequate response according to the Toronto criteria, while 22.9 % reached deep response. Cirrhosis (OR 0.460; 95 % CI 0.225-0.942; p = 0.034) and elevated baseline alkaline phosphatase levels (OR 0.629; 95 % CI 0.513-0.770; p < 0.001) were associated with reduced odds of deep response. The UDCA response score exhibited moderate discrimination power (AUROC = 0.769) but lacked calibration. CONCLUSIONS: Baseline ALP and liver fibrosis emerge as the most important prognostic factors to predict normalization of alkaline phosphatase and bilirubin after UDCA. The UDCA response score was inadequate for predicting deep response in the Brazilian PBC population.

4.
Artículo en Inglés | MEDLINE | ID: mdl-39209693

RESUMEN

OBJECTIVE: The objective of this study was to describe a series of peripheral T-cell lymphoma, not otherwise specified (PTCL NOS) affecting the oral cavity and to review the available literature. STUDY DESIGN: Cases diagnosed as PTCL-NOS affecting the oral cavity were retrospectively retrieved from pathology files. Original hematoxylin and eosin-stained slides and immunohistochemical reactions were reviewed for microscopic confirmation. The presence of Epstein-Barr virus (EBV) was investigated by in situ hybridization. Clinical and follow-up data were retrieved from patients' pathology and medical files. RESULTS: A total of 5 cases were obtained with a mean age of 51.8 years old, 3 male patients and 2 female patients. Three cases affected the palate and 2 cases affected the gingiva, whereas 1 case affected the maxillary bone. Tumors presented as destructive, infiltrative, and painful lesions causing swelling, ulceration, and tissue necrosis. All cases exhibited CD3 expression. GATA3 was expressed in 3 cases. Four patients were deceased of the disease during follow-up. CONCLUSIONS: PTCL NOS affecting the oral cavity is rare and usually present as a very aggressive disease, associated with a poor prognosis and dismal outcome. (Oral Surg Oral Med Oral Pathol Oral Radiol YEAR;VOL:page range).

5.
Front Endocrinol (Lausanne) ; 15: 1346052, 2024.
Artículo en Inglés | MEDLINE | ID: mdl-38686210

RESUMEN

For pheochromocytoma and paraganglioma (PPGL), the efficacy of percutaneous ablative therapies in achieving control of metastatic tumors measuring <3 cm had been demonstrated in only few reports, and intraoperative radiofrequency ablation (RFA) of locally invasive primary PPGLs has not been reported. We presented the case of a 31-year-old man who had a 9-cm functioning unresectable PPGL. He was treated with 13 cycles of cytotoxic chemotherapy without objective tumor response, according to the Response Evaluation Criteria in Solid Tumors (RECIST). Subsequently, magnetic resonance imaging revealed a 9.0 × 8.6 × 6.0-cm retroperitoneal mass that extended to the inferior portion of the inferior vena cava, the inferior mesenteric artery, and the infrarenal aorta. Biochemical evaluation demonstrated high level of plasma normetanephrine (20.2 nmol/L, normal range <0.9 nmol/L). Genetic investigation showed the germline pathogenic variant c.1591delC (p. Ser198Alafs*22) in the SDHB gene. I131-metaiodobenzylguanidine scintigraphy was negative and Ga68-dotatate PET-CT scan showed high tumor uptake without distant metastases. On open laparotomy, tumor debulking was not possible. Therefore, intraoperative RFA was performed by a highly experienced team of interventional radiologists. At 12 months after the RFA, the tumor volume decreased from 208 to 45 mL (78%), plasma normetanephrine decreased from 20.2 to 2.6 nmol/L (87%), and the doxazosin dose was reduced from 16 to 8 mg/day. To our best knowledge, this was the first report on intraoperative RFA that markedly reduced the size of a large primary unresectable PPGL, along with clinical and biochemical responses.


Asunto(s)
Paraganglioma , Ablación por Radiofrecuencia , Humanos , Masculino , Adulto , Paraganglioma/cirugía , Paraganglioma/diagnóstico por imagen , Paraganglioma/patología , Ablación por Radiofrecuencia/métodos , Neoplasias Abdominales/cirugía , Neoplasias Abdominales/diagnóstico por imagen , Neoplasias Abdominales/patología , Neoplasias Retroperitoneales/cirugía , Neoplasias Retroperitoneales/diagnóstico por imagen , Neoplasias Retroperitoneales/patología
6.
Eur J Gastroenterol Hepatol ; 36(5): 628-635, 2024 May 01.
Artículo en Inglés | MEDLINE | ID: mdl-38555601

RESUMEN

BACKGROUND: Ursodeoxycholic acid (UDCA) is the standard treatment for primary biliary cholangitis (PBC), but a significant proportion of patients do not respond adequately, leading to increased risk of adverse outcomes. This study aims to develop a new and straightforward predictive score to identify PBC patients likely to achieve a complete response to UDCA. METHODS: A logistic regression analysis was conducted using a derivation cohort of PBC patients to identify pre-treatment variables associated with response to UDCA. This analysis led to the development of the ALP-A score, calculated as: Age at diagnosis divided by (alkaline phosphatase at diagnosis/upper limit of normal). ALP-A score accuracy was evaluated using the area under the ROC curve, validated with a large external cohort from Brazil. Additionally, the correlation between the ALP-A score and the previously validated UDCA response score (URS) was assessed. RESULTS: ALP-A score had good predictive power for adequate (AUC 0.794; 95% CI, 0.737-0.852) and deep (0.76; 95% CI, 0.69-0.83) UDCA response at 1 year of treatment. A cutoff score of 17 and 23 points was determined to be the optimal threshold for distinguishing adequate and deep responders, respectively, from non-responders. ALP-A score demonstrated a sensitivity of 73%, specificity of 71%, positive predictive value of 65%, negative predictive value of 78%, and overall accuracy of 72% for biochemical response. The URS displayed similar discriminative ability (AUC 0.798; 95% CI, 0.741-0.855). CONCLUSION: ALP-A score performs comparably to URS but offers the great advantage of simplicity for routine clinical use. It serves as a valuable tool to identify PBC patients less likely to respond to UDCA treatment, facilitating early consideration of alternative therapeutic approaches.


Asunto(s)
Cirrosis Hepática Biliar , Ácido Ursodesoxicólico , Humanos , Ácido Ursodesoxicólico/uso terapéutico , Cirrosis Hepática Biliar/diagnóstico , Cirrosis Hepática Biliar/tratamiento farmacológico , Colagogos y Coleréticos/uso terapéutico , Fosfatasa Alcalina , Brasil , Resultado del Tratamiento
7.
ACS Appl Mater Interfaces ; 16(8): 10897-10907, 2024 Feb 28.
Artículo en Inglés | MEDLINE | ID: mdl-38364212

RESUMEN

The selective, rapid detection of low levels of hormones in drinking water and foodstuffs requires materials suitable for inexpensive sensing platforms. We report on core-shell Ag@C nanocables (NCs) decorated with carbon spherical shells (CSSs) and silver nanoparticles (AgNPs) by using a hydrothermal green approach. Sensors were fabricated with homogeneous, porous films on screen-printed electrodes, which comprised a 115 nm silver core covered by a 122 nm thick carbon layer and CSSs with 168 nm in diameter. NCs and CSSs were also decorated with 10-25 nm AgNPs. The NC/CSS/AgNP sensor was used to detect ethinylestradiol using square wave voltammetry in 0.1 M phosphate buffer (pH 7.0) over the 1.0-10.0 µM linear range with a detection limit of 0.76 µM. The sensor was then applied to detect ethinylestradiol in tap water samples and a contraceptive pill with recovery percentages between 93 and 101%. The high performance in terms of sensitivity and selectivity for hormones is attributed to the synergy between the carbon nanomaterials and AgNPs, which not only increased the sensor surface area and provided sites for electron exchange but also imparted an increased surface area.


Asunto(s)
Carbono , Nanopartículas del Metal , Plata , Etinilestradiol , Agua , Hormonas , Electrodos , Técnicas Electroquímicas
8.
Revisbrato ; 7(4): 2212-2218, dez. 2023.
Artículo en Portugués | LILACS | ID: biblio-1524826

RESUMEN

Contextualização: Trata-se de uma análise da prática, que objetivou descrever o processo avaliativo e as condutas terapêuticas ocupacionais na adaptação ocupacional de pessoas com diagnóstico de HIV/AIDS em processo de hospitalização. Processo de Intervenção: Participaram deste estudo quatro pacientes. Os atendimentos basearam-se na anamnese, avaliação semiestruturada e intervenções fundamentadas no modelo de ocupação humana. Análise crítica da prática: O diagnóstico recente de HIV/AIDS pode impactar diretamente a identidade e a participação ocupacional, o que pode comprometer a adaptação ocupacional e a qualidade de vida. Síntese das considerações: Tal experiência colaborou para o fomento de referenciais e reflexões terapêuticas ocupacionais na adaptação ocupacional de pessoas que vivem com HIV/AIDS, enfatizando o engajamento em atividades significativas e sua relação na motivação ocupacional e no sentimento de autoeficácia.(AU)


Contextualization: This is an analysis of the practice, which aimed to describe the evaluation process and the occupational therapeutic conducts in the occupational adaptation of people diagnosed with HIV/AIDS in the process of hospitalization. Intervention Process: Four patients participated in this study. The consultations were based on anamnesis, semi-structured evaluation and interventions based on the human occupation model. Critical analysis of the practice: Recent HIV/AIDS diagnosis can directly impact occupational identity and participation, which can compromise occupational adaptation and quality of life. Summary of considerations: This experience contributed to the promotion of occupational therapeutic references and reflections in the occupational adaptation of people living with HIV/AIDS, emphasizing the engagement in meaningful activities and their relationship to occupational motivation and the feeling of self-efficacy.(AU)


Contextualización: Se trata de un análisis de la práctica, que tuvo como objetivo describir el proceso de evaluación y las conductas terapéuticas ocupacionales en la adaptación ocupacional de personas diagnosticadas con VIH/SIDA en proceso de hospitalización. Proceso de intervención: Cuatro pacientes participaron en este estudio. Las consultas se basaron en anamnesis, evaluación semiestructurada e intervenciones basadas en el modelo de ocupación humana. Análisis crítico de la práctica: El diagnóstico reciente de VIH/SIDA puede afectar directamente la identidad y la participación ocupacional, lo que puede comprometer la adaptación ocupacional y la calidad de vida. Resumen de las consideraciones: Esta experiencia contribuyó a la promoción de referentes terapéuticos ocupacionales y reflexiones en la adaptación ocupacional de personas que viven con VIH/SIDA, enfatizando el compromiso en actividades significativas y su relación con la motivación ocupacional y el sentimiento de autoeficacia.(AU)

9.
Revisbrato ; 7(4): 2199-2204, dez. 2023.
Artículo en Portugués | LILACS | ID: biblio-1524810

RESUMEN

Contextualização: Trata-se de uma análise prática sobre as possibilidades de ampliação do repertório ocupacional no hospital. Processo de Intervenção: Utilizou-se entrevista semiestruturada baseada na ciência da ocupação. Durante as intervenções, constatou-se que os pacientes se encontravam com suas ocupações modificadas em decorrência do adoecimento e da hospitalização. Análise crítica da prática: O terapeuta ocupacional, no ambiente hospitalar, por meio de uso de diferentes atividades, explora e resgata habilidades e capacidades do sujeito, com vistas a possibilitar vivências saudáveis. Síntese das considerações: O hospital pode permitir o resgate de ocupações e ampliação do repertório ocupacional. (AU)


Contextualization: This is a practical analysis of the possibilities of expanding the occupational repertoire in the hospital. Intervention Process: A semi-structured interview based on the science of occupation was used. During the interventions, it was found that the patients found their occupations changed as a result of illness and hospitalization. Critical analysis of the practice: The occupational therapist in the hospital environment, through the use of different activities, explores and rescues the subject's skills and abilities, with a view to enabling healthy experiences. Summary of considerations: The hospital can allow the rescue of occupations and expansion of the occupational repertoire.(AU)


Contextualización: Se trata de un análisis práctico de las posibilidades de ampliación del repertorio ocupacional en el hospital. Proceso de Intervención: Se utilizó una entrevista semiestructurada basada en la ciencia de la ocupación. Durante las intervenciones, se constató que los pacientes cambiaron sus ocupaciones como consecuencia de la enfermedad y la hospitalización. Análisis crítico de la práctica: El terapeuta ocupacional en el ambiente hospitalario, a través del uso de diferentes actividades, explora y rescata las habilidades y destrezas del sujeto, con miras a posibilitar experiencias saludables. Resumen de consideraciones: El hospital puede permitir el rescate de ocupaciones y ampliación del repertorio ocupacional.(AU)

10.
Biomater Adv ; 155: 213676, 2023 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-37944446

RESUMEN

The synergy between eco-friendly biopolymeric films and printed devices leads to the production of plant-wearable sensors for decentralized analysis of pesticides in precision agriculture and food safety. Herein, a simple method for fabrication of flexible, and sustainable sensors printed on cellulose acetate (CA) substrates has been demonstrated to detect carbendazim and paraquat in agricultural, water and food samples. The biodegradable CA substrates were made by casting method while the full electrochemical system of three electrodes was deposited by screen-printing technique (SPE) to produce plant-wearable sensors. Analytical performance was assessed by differential pulse (DPV) and square wave voltammetry (SWV) in a linear concentration range between 0.1 and 1.0 µM with detection limits of 54.9 and 19.8 nM for carbendazim and paraquat, respectively. The flexible and sustainable non-enzymatic plant-wearable sensor can detect carbendazim and paraquat on lettuce and tomato skins, and also water samples with no interference from other pesticides. The plant-wearable sensors had reproducible response being robust and stable against multiple flexions. Due to high sensitivity and selectivity, easy operation and rapid agrochemical detection, the plant-wearable sensors can be used to detect biomarkers in human biofluids and be used in on-site analysis of other hazardous chemical substances.


Asunto(s)
Plaguicidas , Dispositivos Electrónicos Vestibles , Humanos , Plaguicidas/análisis , Paraquat/análisis , Inocuidad de los Alimentos , Agricultura , Agua/análisis
11.
Diagnostics (Basel) ; 13(13)2023 Jun 30.
Artículo en Inglés | MEDLINE | ID: mdl-37443631

RESUMEN

BACKGROUND: Cytogenomic methods have gained space in the clinical investigation of patients with disorders/differences in sexual development (DSD). Here we evaluated the role of the SNP array in achieving a molecular diagnosis in Brazilian patients with syndromic DSD of unknown etiology. METHODS: Twenty-two patients with DSD and syndromic features were included in the study and underwent SNP-array analysis. RESULTS: In two patients, the diagnosis of 46,XX SRY + DSD was established. Additionally, two deletions were revealed (3q29 and Xp22.33), justifying the syndromic phenotype in these patients. Two pathogenic CNVs, a 10q25.3-q26.2 and a 13q33.1 deletion encompassing the FGFR2 and the EFNB2 gene, were associated with genital atypia and syndromic characteristics in two patients with 46,XY DSD. In a third 46,XY DSD patient, we identified a duplication in the 14q11.2-q12 region of 6.5 Mb associated with a deletion in the 21p11.2-q21.3 region of 12.7 Mb. In a 46,XY DSD patient with delayed neuropsychomotor development and congenital cataracts, a 12 Kb deletion on chromosome 10 was found, partially clarifying the syndromic phenotype, but not the genital atypia. CONCLUSIONS: The SNP array is a useful tool for DSD patients, identifying the molecular etiology in 40% (2/5) of patients with 46,XX DSD and 17.6% (3/17) of patients with 46,XY DSD.

12.
Ann Hepatol ; 28(4): 101105, 2023.
Artículo en Inglés | MEDLINE | ID: mdl-37088418

RESUMEN

INTRODUCTION AND OBJECTIVES: Primary biliary cholangitis (PBC) and autoimmune hepatitis (AIH) and PBC overlap syndrome (AIH/PBC) have been associated with a higher risk of hepatocellular carcinoma (HCC) and extra-hepatic malignancy (EHM). This study aims to assess potential risk factors associated with cancer development in PBC and AIH/PBC. MATERIALS AND METHODS: The Brazilian Cholestasis Study Group database was reviewed to compare clinical and laboratory features of PBC patients with HCC and EHM with those without cancer. RESULTS: Among the 752 PBC patients enrolled, 64 of them with AIH/PBC, 87 cancers were identified in 72 patients, including 20 cases of HCC and 67 of EHM. Patients with HCC had a higher prevalence of cirrhosis (95% vs. 32.5% of those subjects without cancer, p≤0.001), smoking (55% vs. 12.3%, p≤0.001), CREST syndrome (30% vs 7.6%, p=0.003) and prior azathioprine (30% vs 8%, p= 0.005) and prednisone (35% vs 14%, p= 0.018) use, whereas patients with EHM had a higher prevalence of smoking (42.3% vs 12.4% of those subjects without cancer, p= <0.001), AMA positivity (96.6% vs 80.1%, p≤0.001), azathioprine therapy (21% vs 7.9%, p= 0.01) and concurrent other autoimmune diseases. In multivariate analysis, cirrhosis, obesity and prior azathioprine therapy were independent risk factors for HCC, while Sjogren syndrome and psoriasis were associated with EHM. Fibrates reduced EHM risk. CONCLUSIONS: The prevalence of EHM is higher when compared to HCC in PBC patients. Cirrhosis, obesity, prior azathioprine use, and concurrent autoimmune diseases were significantly associated with cancer in PBC.


Asunto(s)
Carcinoma Hepatocelular , Hepatitis Autoinmune , Cirrosis Hepática Biliar , Neoplasias Hepáticas , Humanos , Hepatitis Autoinmune/complicaciones , Hepatitis Autoinmune/diagnóstico , Hepatitis Autoinmune/epidemiología , Cirrosis Hepática Biliar/diagnóstico , Cirrosis Hepática Biliar/epidemiología , Cirrosis Hepática Biliar/complicaciones , Carcinoma Hepatocelular/diagnóstico , Carcinoma Hepatocelular/epidemiología , Carcinoma Hepatocelular/complicaciones , Azatioprina/uso terapéutico , Neoplasias Hepáticas/epidemiología , Neoplasias Hepáticas/complicaciones , Cirrosis Hepática/complicaciones , Factores de Riesgo , Síndrome , Obesidad/complicaciones
13.
Electrochim Acta ; 451: 142271, 2023 May 20.
Artículo en Inglés | MEDLINE | ID: mdl-36974119

RESUMEN

Fast, sensitive, simple, and cheap sensors are highly desirable to be applied in the health system because they improve point-of-care diagnostics, which can reduce the number of cases of infection or even deaths. In this context, here we report the development of a label-free genosensor using a screen-printed electrode modified with 2D-carbonylated graphitic carbon nitride (c-g-C3N4), poly(diallyldimethylammonium) chloride (PDDA), and glutathione-protected gold nanoparticles (GSH-AuNPs) for photoelectrochemical (PEC) detection of SARS-CoV-2. We also made use of Arduino and 3D printing to miniaturize the sensor device. The electrode surface was characterized by AFM and SEM techniques, and the gold nanoparticles by UV-Vis spectrophotometry. For SARS-CoV-2 detection, capture probe DNA was immobilized on the electrode surface. The hybridization of the final genosensor was tested with a synthetic single-strand DNA target and with natural saliva samples using the photoelectrochemistry method. The device presented a linear range from 1 to 10,000 fmol L-1 and a limit of detection of 2.2 and 3.4 fmol L-1 using cpDNA 1A and 3A respectively. The sensibility and accuracy found for the genosensor using cpDNA 1A using biological samples were 93.3 and 80% respectively, indicating the potential of the label-free and portable genosensor to detect SARS-CoV-2 RNA in saliva samples.

14.
Clinics (Sao Paulo) ; 78: 100185, 2023.
Artículo en Inglés | MEDLINE | ID: mdl-36965237

RESUMEN

OBJECTIVE: To analyze aspects of sexual life and fertility desire among 46, XY DSD people, including those who changed their gender. METHODS: It is a cross-sectional study including 127 adults (> 16 years of age) with 46, XY DSD (83 females; 44 males) from a Single Brazilian Tertiary-Care Medical Center. RESULTS: Sexual fantasies and masturbation were more frequent in 46, XY DSD males, whereas orgasm and sexual life satisfaction were similar in both genders. More 46, XY DSD men than women had a long-term romantic relationship. 46, XY DSD women with prenatal androgen exposure reported more fear of being romantically rejected. External genitalia appearance at birth did not impact the sexuality of 46, XY DSD women after surgical genital treatment had been completed. Overall, the sexual life was similar between 46, XY men assigned as males and those who changed to the male gender. Regarding sexual orientation, most self-reported as heterosexual (91% and 92% of women and men, respectively). The desire for fertility had a similar prevalence in both genders, but more women than men considered infertility a barrier to a long-term romantic relationship. Twelve individuals (7 males) had children; 10 out of 12 have adopted children. CONCLUSION: Fertility desire was shared among 46, XY DSD people, regardless of gender. Prenatal androgen exposure reduced the desire for motherhood in 46, XY women. 46, XY DSD people who changed from female to male gender presented similar sexual parameters as those assigned as males. Among females, virilized genitalia at birth did not affect sexuality once the surgical treatment is completed.


Asunto(s)
Andrógenos , Disgenesia Gonadal 46 XY , Adulto , Niño , Embarazo , Recién Nacido , Humanos , Femenino , Masculino , Estudios Transversales , Conducta Sexual , Sexualidad , Desarrollo Sexual , Fertilidad
15.
J Oral Pathol Med ; 52(4): 315-323, 2023 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-36852531

RESUMEN

BACKGROUND: This systematic review aimed to investigate the radiological features of lymphomas and leukaemias affecting the jaws. METHODS: A systematic literature review was conducted using the electronic databases of PubMed, Web of Science and Scopus. Articles that contained sufficient radiographic examinations (periapical, panoramic or computed tomography images) for individual cases were included. Additionally, either immunohistochemical or molecular confirmation was required prior to inclusion. Three authors evaluated and described the image quality and radiological features. RESULTS: From an initial 1079 articles screened, 129 cases were included, containing 88 tomographic, 76 panoramic and 26 periapical examinations. The quality of the majority of images was sufficient for evaluation. Diffuse large B-cell lymphoma, Burkitt lymphoma, leukemic infiltration, plasmablastic lymphoma and extranodal Natural killer (NK)/T-cell lymphoma, nasal type were the most common subtypes. Involved teeth presented with mobility in 37.2% of the cases and a provisional diagnosis of inflammatory/infectious dental disease was considered in 49.2% of cases. Computed tomography exams were available for 76% of the cases, with most presented with an osteolytic lesion with ill-defined borders. Periosteal reactions were uncommon. CONCLUSION: Lymphoma/leukaemia infiltrates of the jaw bones are usually of high-grade subtypes and rarely present with periosteal reactions.


Asunto(s)
Leucemia , Linfoma de Células B Grandes Difuso , Humanos , Linfoma de Células B Grandes Difuso/patología , Radiografía , Maxilares/diagnóstico por imagen , Maxilares/patología
16.
Curr Neuropharmacol ; 21(3): 482-490, 2023.
Artículo en Inglés | MEDLINE | ID: mdl-36722478

RESUMEN

BACKGROUND: The mutated VAPBP56S (vesicle B associated membrane protein - P56S) protein has been described in a Brazilian family and classified as Amyotrophic Lateral Sclerosis type 8 (ALS8). OBJECTIVE: We aimed to study altered biochemical and immunological parameters in cells from ALS8 patients to identify possible biomarkers or therapeutic targets. METHODS: Wild-type VAPB, VAPBP56S, mTOR, proinflammatory cytokines, and oxidant/reducing levels in serum, leucocytes, and cellular lysate from ALS8 patients and health Controls were performed by ELISA, fluorimetry, and spectrophotometry. RESULTS: Our results showed similar levels of mutant and wild-type VAPB in serum and intracellular lysate (p > 0.05) when ALS8 patients and Controls were compared. IL-1ß, IL-6, and IL-18 levels in patients and Controls showed no difference, suggesting an absence of peripheral inflammation (p > 0.05). Oxidative metabolic response, assessed by mitochondrial ROS production, and reductive response by MTT reduction, were higher in the ALS8 group compared to Controls (p < 0.05), although not characterizing typical oxidative stress in ALS8 patients. Total mTOR levels (phosphorylated or non-phosphorylated) of ALS8 patients were significantly lower in serum and higher in intracellular lysate than the mean equivalents in Controls (p < 0.05). A similar result was observed when we quantified the phosphorylated protein (p < 0.05). CONCLUSION: We demonstrate the possibility of using these biochemical and immunological parameters as potential therapeutic targets or biomarkers. Furthermore, by hypothesis, we suggest a hormetic response in which both VAPB forms could coexist in different proportions throughout life. The mutated VAPBP56S production would increase with aging and predominate over the wild-type VAPB levels, determining the onset of symptoms and aggravating the disease.


Asunto(s)
Esclerosis Amiotrófica Lateral , Proteínas de Transporte Vesicular , Humanos , Proteínas de Transporte Vesicular/química , Proteínas de Transporte Vesicular/genética , Proteínas de Transporte Vesicular/metabolismo , Esclerosis Amiotrófica Lateral/genética , Esclerosis Amiotrófica Lateral/metabolismo , Proteínas de la Membrana/genética , Leucocitos/metabolismo , Mutación , Serina-Treonina Quinasas TOR
17.
Small ; 19(12): e2206753, 2023 03.
Artículo en Inglés | MEDLINE | ID: mdl-36642790

RESUMEN

Paracetamol or acetaminophen is the main non-opioid analgesic recommended for mild pain by the World Health Organization (WHO) analgesic ladder. However, the high levels used of paracetamol are associated with the hepatotoxicity and nephrotoxicity caused by accumulation of toxic metabolites. The sensor is produced on a polyester substrate containing a full electrochemical device with working, auxiliary, and reference electrodes in which, guiding personalized medicine solutions are not reported. Temporal paracetamol profiles in human saliva are performed with the subject taking different amounts of commercial analgesic pills. The variation of saliva paracetamol levels is demonstrated to be interference free from electroactive interfering species and human saliva constituents. In addition, the sensor displays to be useful as a disposable device for the fast detection of paracetamol in untreated raw saliva following pill intake. The maximum concentration (Cmax ) and half-life time (t1/2 ) for paracetamol are 143.27 µm and 110 min. The results demonstrate the potential of a simple strategy with electrochemical devices for noninvasive personalized therapy toward guiding drug interventions through tracking of active substance, detecting, and correcting insufficiency of absorption to meet individual needs avoiding overdoses, side effects, and intoxication.


Asunto(s)
Acetaminofén , Analgésicos no Narcóticos , Humanos , Acetaminofén/uso terapéutico , Medicina de Precisión , Saliva/metabolismo , Monitoreo de Drogas , Analgésicos no Narcóticos/metabolismo , Analgésicos no Narcóticos/uso terapéutico
18.
Biosens Bioelectron ; 223: 114994, 2023 Mar 01.
Artículo en Inglés | MEDLINE | ID: mdl-36577175

RESUMEN

Herein, we introduce wearable potentiometric biosensors on screen-printed carbon electrodes (SPCEs) for on-body and on-site monitoring of urea in sweat. The biosensor architecture was judiciously designed to detect urea at different pHs and incorporate a pH sensor, thus containing polyaniline ink, urease bioink and a polyvinylchloride membrane. Urea detection could be performed in the wide range from 5 to 200 mM at pH 7.0, encompassing urea levels in human sweat. The biosensor response was fast (incubation time 5 min), with no interference from other substances in sweat. Reliable urea detection could be done in undiluted human sweat with a skin-worn flexible device using the pH correction strategy afforded by the pH sensor. The performance of the epidermal biosensor was not affected by severe bending strains. The feasibility of mass production was demonstrated by fabricating epidermal flexible biosensors using slot-die coating with a roll-to-roll technique.


Asunto(s)
Técnicas Biosensibles , Dispositivos Electrónicos Vestibles , Humanos , Técnicas Biosensibles/métodos , Sudor/química , Urea/análisis , Potenciometría
19.
Dig Dis Sci ; 68(2): 514-520, 2023 02.
Artículo en Inglés | MEDLINE | ID: mdl-35989386

RESUMEN

BACKGROUND: Response to ursodeoxycholic acid (UDCA) in primary biliary cholangitis (PBC) has been traditionally assessed 1 to 2 years after treatment initiation. With the development of new drugs, some patients may benefit from an earlier introduction of second-line therapies. AIMS: This study aims to identify whether well-validated response criteria could correctly identify individuals likely to benefit from add-on second-line therapy at 6 months. METHODS: Analysis of a multicenter retrospective cohort which included only patients with clear-cut PBC. RESULTS: 206 patients with PBC (96.6% women; mean age 54 ± 12 years) were included. Kappa concordance was substantial for Toronto (0.67), Rotterdam (0.65), Paris 1 (0.63) and 2 (0.63) criteria at 6 and 12 months, whereas Barcelona (0.47) and POISE trial (0.59) criteria exhibited moderate agreement. Non-response rates to UDCA was not statistically different when assessed either at 6 or 12 months using Toronto, Rotterdam or Paris 2 criteria. Those differences were even smaller or absent in those subjects with advanced PBC. Mean baseline alkaline phosphatase was 2.73 ± 1.95 times the upper limit of normal (× ULN) among responders versus 5.05 ± 3.08 × ULN in non-responders (p < 0.001). CONCLUSIONS: After 6 months of treatment with UDCA, the absence of response by different criteria could properly identify patients who could benefit from early addition of second-line therapies, especially in patients with advanced disease or high baseline liver enzymes levels.


Asunto(s)
Cirrosis Hepática Biliar , Ácido Ursodesoxicólico , Humanos , Femenino , Adulto , Persona de Mediana Edad , Anciano , Masculino , Ácido Ursodesoxicólico/uso terapéutico , Cirrosis Hepática Biliar/tratamiento farmacológico , Colagogos y Coleréticos/uso terapéutico , Estudios Retrospectivos
20.
Clinics ; 78: 100185, 2023. tab
Artículo en Inglés | LILACS-Express | LILACS | ID: biblio-1439904

RESUMEN

Abstract Objective: To analyze aspects of sexual life and fertility desire among 46, XY DSD people, including those who changed their gender. Methods: It is a cross-sectional study including 127 adults (> 16 years of age) with 46, XY DSD (83 females; 44 males) from a Single Brazilian Tertiary-Care Medical Center. Results: Sexual fantasies and masturbation were more frequent in 46, XY DSD males, whereas orgasm and sexual life satisfaction were similar in both genders. More 46, XY DSD men than women had a long-term romantic relationship. 46, XY DSD women with prenatal androgen exposure reported more fear of being romantically rejected. External genitalia appearance at birth did not impact the sexuality of 46, XY DSD women after surgical genital treatment had been completed. Overall, the sexual life was similar between 46, XY men assigned as males and those who changed to the male gender. Regarding sexual orientation, most self-reported as heterosexual (91% and 92% of women and men, respectively). The desire for fertility had a similar prevalence in both genders, but more women than men considered infertility a barrier to a long-term romantic relationship. Twelve individuals (7 males) had children; 10 out of 12 have adopted children. Conclusion: Fertility desire was shared among 46, XY DSD people, regardless of gender. Prenatal androgen exposure reduced the desire for motherhood in 46, XY women. 46, XY DSD people who changed from female to male gender presented similar sexual parameters as those assigned as males. Among females, virilized genitalia at birth did not affect sexuality once the surgical treatment is completed.

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