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1.
J Comp Physiol B ; 190(3): 261-274, 2020 05.
Artículo en Inglés | MEDLINE | ID: mdl-32078039

RESUMEN

The aim of this study was to evaluate energetic source used by juveniles of a terrestrial oviparous invertebrate during the earliest periods of their life. Growth, behavioural activities and energy contents of Pardosa saltans spiderlings' residual vitellus were monitored during 8 days after their emergence from their egg-sac until they disperse autonomously. The life-cycle of juvenile after emergence can be divided into three periods: a gregarious while juveniles are aggregated on their mother, dismounting off their mother's back and dispersion. We present the first biochemical study of residual vitellus and energy expenditure during these three periods. At emergence, the mean weight of juveniles was 0.59 mg and energy stock from residual vitellus averaged 51 cal/g wet mass. During gregarious period, the weight of the juveniles aggregated on their mother did not vary significantly and juveniles utilized only 1 cal/day from their residual vitellus. During the period from dismounting until their first exogenous feed, juveniles lost weight and used 30% of their residual vitellus stock. Proteins from the residual vitellus contributed principally to their energy expenditure during this period: 1.5 µg protein/day. Juveniles' first exogenous feeding was observed 7-8 days after emergence, when 70% of residual vitellus energy had been utilized. Juveniles dispersed after eating, reconstituting an energy stock comparable to that observed at emergence from egg-sac (50 cal/g wet mass). This new energy stock contains mainly lipids unlike the energy stock from the residual vitellus.


Asunto(s)
Proteínas de Artrópodos/análisis , Proteínas del Huevo/análisis , Metabolismo Energético , Lípidos/análisis , Óvulo/química , Arañas/fisiología , Animales , Carbohidratos/análisis , Femenino , Conducta Predatoria
2.
Artículo en Inglés | MEDLINE | ID: mdl-31657684

RESUMEN

BACKGROUND: Potassium status has been found to affect glucose homeostasis. OBJECTIVE: This study therefore aimed at investigating relationships between potassium status or dietary intake and fasting plasma glucose (FPG) or glycated haemoglobin (HbA1c) in a sample of Austrian adults (18-80 years, n = 421, 61% women) from the Austrian Study on Nutritional Status 2012. METHODS: Dietary potassium intake was obtained by two 24 h recalls. FPG, plasma K+, and urinary K+ were determined photometrically, HbA1c by HPLC. Associations between the parameters were studied using multiple regression analysis after controlling for confounders and after age stratification of the sample (18-64 y vs. 65-80 y). RESULTS: Most of the participants had a potassium intake of less than the estimated adequate daily intake of 4000 mg/d. In the multiple regression analyses in the whole sample plasma K+ had a statistically significant positive effect on FPG only in the crude model (ß = 0.128, p < 0.01) and on HbA1c also in the fully adjusted model (ß = 0.129, p < 0.05). The small effects on HbA1c were also detected in the younger age group but were absent in the older population. However, in this latter, a reverse association of urinary K+ on HbA1c was observed as well as of dietary potassium intake on FPG with no effects in the younger sample. CONCLUSION: We suggest that age dependent differences in the association between parameters of potassium status and blood glucose regulation should also be taken into account.


Asunto(s)
Envejecimiento/metabolismo , Glucemia/metabolismo , Ayuno/metabolismo , Glucosa/metabolismo , Potasio en la Dieta/administración & dosificación , Potasio en la Dieta/metabolismo , Adolescente , Adulto , Anciano , Anciano de 80 o más Años , Estudios Transversales , Femenino , Hemoglobina Glucada/metabolismo , Humanos , Masculino , Persona de Mediana Edad , Potasio/administración & dosificación , Potasio/metabolismo , Adulto Joven
3.
J Parasit Dis ; 43(4): 566-574, 2019 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-31749526

RESUMEN

Natural infection of 2 to 6-year-old perch with the cestode parasites Triaenophorus nodulosus was shown to have minor effects on the studied components of the antioxidant defense system, nucleic acids degradation, and carbohydrate metabolism enzymes in the liver of the fish. The level of infection of 1-4 parasite larvae per fish observed in wild population of perch was shown to be moderate in terms of its effect on the health of the host fish. The activity of hepatic enzymes ß-galactosidase, ß-glucosidase, cathepsin D, and glutathione S-transferase showed different responses in infected males and females, which indicates different potential resistance of fish to the stress exposure between genders.

4.
Animals (Basel) ; 9(5)2019 May 15.
Artículo en Inglés | MEDLINE | ID: mdl-31096641

RESUMEN

Blood analyses can be used to assess the health and physiological conditions of wild animals and may provide a precise picture of disease, habitat quality, and other environmental factors. The objective of this study was to analyze the relationship between the age and the selected biochemical parameters of the female mouflon (Ovis musimon L.). This study creates a possible reference range of biochemical parameter concentrations in mouflon and aims to extend the knowledge of this wild game species within our geographical region. There have not been many studies dealing with this issue in our geographical region. A total of 57 female mouflons aged between 1 and 6 years (1-3 years n = 32, 4-6 years n = 25) and in good physical condition, with an average live weight between 32 and 40 kg were included in the research experiment between the two years. A total of 15 selected biochemical parameters were analyzed. Using statistical analysis, we noticed significant effects of age on almost three-quarters of analyzed biochemical parameters. A statistically significant correlation was observed between age and the parameters of glucose, alkaline phosphatase, alanine aminotransferase, aspartate aminotransferase, bilirubin, cholesterol, creatinine, high-density lipoprotein, calcium, triglycerides, and urea. An evaluation of the European mouflon's biochemical parameters during the whole year may be a reliable method for judging a herd's condition, diagnosing medical disorders, and preventing the etiology of their occurrence. An analysis of biochemical parameters tells us about the functioning of individual organs as well as the animals' metabolism. Knowledge of the values of blood parameters is of special importance because they allow us to gather more information on mouflons.

5.
J Comp Physiol B ; 188(2): 211-224, 2018 03.
Artículo en Inglés | MEDLINE | ID: mdl-28761984

RESUMEN

The development of Pardosa saltans wolf spiders inside an egg sac includes two periods: an embryonic period and a post-embryonic period after hatching. We investigated spiderlings' energy expenditure to assess energetic costs during the different embryonic and post-embryonic developmental stages during which they are confined within their egg sac. We focused on the following developmental stages: egg, embryonic stages 1 and 2, and two stages, separated by a moult, during post-embryogenesis inside the egg sac: "juvenile instars 1 and 2" until emergence of 2 instar juveniles from their egg sac. We present the first biochemical characterization of the vitellus of wolf spiders' eggs, embryos and juveniles. Lipovitellins (LV) are composed of four apolipoproteins of 116, 87, 70 and 42 kDa, respectively, and LV represent 35-45% of total protein during development. The principal LV lipids are triglycerides, phospholipids, free fatty acids and sterols. Egg caloric content averaged 127 cal/g (proteins: 91 cal/g, lipids: 33 cal/g, carbohydrates: 3 cal/g). During development from undivided egg to emerged "juvenile 2", 67% of proteins, 51% of carbohydrates and 49% of triglycerides stocks were depleted. At the end of the post-embryonic period, at emergence from egg sac, body energy stock of "juveniles 2" was 38% of the initial calorie stocks in the eggs.


Asunto(s)
Arañas/embriología , Arañas/fisiología , Animales , Proteínas de Artrópodos/fisiología , Proteínas del Huevo/fisiología , Embrión no Mamífero/fisiología , Desarrollo Embrionario , Femenino , Lípidos/fisiología , Óvulo/fisiología
6.
Pituitary ; 20(4): 422-429, 2017 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-28275992

RESUMEN

PURPOSE: Follow-up guidelines are needed to assess quality of care and to ensure best long-term outcomes for patients with Cushing's disease (CD). The purpose of this study was to assess agreement by experts on recommended follow-up intervals for CD patients at different phases in their treatment course. METHODS: The RAND/UCLA modified Delphi process was used to assess expert consensus. Eleven clinicians who regularly manage CD patients rated 79 hypothetical patient scenarios before and after ("second round") an in-person panel discussion to clarify definitions. Scenarios described CD patients at various time points after treatment. For each scenario, panelists recommended follow-up intervals in weeks. Panel consensus was assigned as follows: "agreement" if no more than two responses were outside a 2 week window around the median response; "disagreement" if more than two responses were outside a 2 week window around the median response. Recommendations were developed based on second round results. RESULTS: Panel agreement was 65.9% before and 88.6% after the in-person discussion. The panel recommended follow-up within 8 weeks for patients in remission on glucocorticoid replacement and within 1 year of surgery; within 4 weeks for patients with uncontrolled persistent or recurrent disease; within 8-24 weeks in post-radiotherapy patients controlled on medical therapy; and within 24 weeks in asymptomatic patients with stable plasma ACTH concentrations after bilateral adrenalectomy. CONCLUSIONS: With a high level of consensus using the Delphi process, panelists recommended regular follow-up in most patient scenarios for this chronic condition. These recommendations may be useful for assessment of CD care both in research and clinical practice.


Asunto(s)
Hipersecreción de la Hormona Adrenocorticotrópica Pituitaria (HACT)/tratamiento farmacológico , Hipersecreción de la Hormona Adrenocorticotrópica Pituitaria (HACT)/cirugía , Adrenalectomía , Hormona Adrenocorticotrópica/sangre , Glucocorticoides/uso terapéutico , Humanos , Hipersecreción de la Hormona Adrenocorticotrópica Pituitaria (HACT)/sangre , Hipófisis/efectos de los fármacos , Hipófisis/cirugía
7.
J Insect Physiol ; 95: 42-50, 2016 12.
Artículo en Inglés | MEDLINE | ID: mdl-27639941

RESUMEN

Many arachnids like other terrestrial arthropods, provide extensive maternal care. Few studies have quantified the underlying physiological costs of maternal care. We investigated how maternal care affects the free-moving wolf spider's (Pardosa saltans) energy requirements. We described in detail their basic reproduction biology (i.e. carrying cocoon and young) and we evaluated the variation in the females' energy reserves during maternal care. Our results show that mothers guard eggs until hatching and then guard their spiderlings for 27-30 more days. Laboratory observations indicated that spiderlings start leaving the maternal abdomen gradually 5-7days after hatching. Females carry an egg sac (cocoon) that can weigh up to 77% of their post-reproduction weight and carry young that weigh 87-100% of their body mass. Females lost weight over time despite regular food intake, while carrying cocoon and young; but their weights increased gradually during the dispersal of young. The contributions of proteins, glucose and triglycerides to maintain females' energy were calculated. Their energetic state varied during maternal care, in particular lipid levels declined, during the care of spiderlings when the females' predatory behaviour was inhibited. Our results show that the maternal care provided by P. saltans females is particularly costly physiologically, during the 30days following egg sac formation and development of spiderlings, even when food is available.


Asunto(s)
Metabolismo Energético , Conducta Predatoria , Arañas/fisiología , Animales , Femenino , Locomoción , Conducta Materna
8.
Exp Parasitol ; 154: 113-7, 2015 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-25917646

RESUMEN

To investigate the response of pompano fish (Trachinotus ovatus) to white spot disease, we used the protozoan Cryptocaryon irritans to infect live 450-g specimens at concentrations of 40,000 theronts/fish. We assessed the relative infection intensity (RII), serum immobilizing titer, and immunity-related enzyme activities (ACP, AKP, LZM), and assessed feeding, serum ion concentrations (Na(+), Cl(-), Ca(2+) and K(+)) and blood biochemistry (ALT, AST, LDH) of pompano. The fish were then treated with a lethal dose of C. irritans (70,000 theronts/fish) and the number of deaths was recorded. We found that the relative infection intensities of the control group, group I, and group II were 0, 0.630 ± 0.179, and 0.014 ± 0.006. Poly-infection induced a significant increase in the serum immobilizing titer (853.33 ± 295.60) of group II. In terms of the biochemical assessment, group II had significantly higher alkaline phosphatase and acid phosphatase activities than the other groups, and the lowest lysozyme activity (P < 0.05), compared to higher activity in the control group and the highest level in group I. Only the fishes of group I had stopped feeding after treatment. The concentrations of Na(+), Cl(-), and Ca(2+) in blood serum did not differ significantly among the three groups, but K(+) concentration increased with the increasing infection frequency. Alanine aminotransferase, aspartate aminotransferase, and lactate dehydrogenase activities in fish of group II were significantly higher than those of the other groups. Survival of the fish subjected to the lethal dose of C. irritans was 0, 0, and 100 in groups control, I, and II, respectively. In conclusions, based on the food intake of group II, along with the results of relative infection intensity, serum immobilizing titer, and survival, we speculate that the fish in that group acquired high protective immunity following poly-infection by C. irritans, experiencing limited harm for pompano.


Asunto(s)
Infecciones por Cilióforos/veterinaria , Enfermedades de los Peces/sangre , Fosfatasa Ácida/sangre , Alanina Transaminasa/sangre , Fosfatasa Alcalina/sangre , Animales , Aspartato Aminotransferasas/sangre , Calcio/sangre , Cloro/sangre , Infecciones por Cilióforos/sangre , Infecciones por Cilióforos/inmunología , Infecciones por Cilióforos/metabolismo , Enfermedades de los Peces/inmunología , Enfermedades de los Peces/metabolismo , Explotaciones Pesqueras , Peces , L-Lactato Deshidrogenasa/sangre , Muramidasa/sangre , Potasio/sangre , Distribución Aleatoria , Agua de Mar , Sodio/sangre
9.
Artículo en Coreano | WPRIM (Pacífico Occidental) | ID: wpr-96681

RESUMEN

The present study was conducted to investigate dietary habits and biochemical indices according to the obesity index of elementary school students visiting a hospital for diagnosis. The subjects of this study were 150 elementary school students and their mothers. The overweight rates of child subjects were 37.5% for males and 40.9% for females, whereas the rates of underweight children were 35.0% for males and 14.5% for females. Children's obesity index significantly decreased with an increase in the average monthly income of children's families. Children's obesity index, mothers's weights, BMI, and percent ideal body weight were all positively correlated. Blood biochemical values in children (hemoglobin, hematocrit, albumin, globulin, glucose, total cholesterol, and triglyceride levels) and their obesity index also showed positive correlation. For the underweight group, the frequency of iron-deficiency anemia was significantly high, whereas for the overweight group, the frequency of dyslipidemia was high. There was a significant increase in children's obesity index and a decrease in frequency of regular exercise with time spent on the TV/computer. The normal weight group recorded the highest total scores for mothers' nutritional knowledge, whereas the overweight group recorded the lowest total scores. Therefore, to maintain healthy weight in children, nutritional education programs for mothers and children should be developed.


Asunto(s)
Niño , Femenino , Humanos , Masculino , Anemia Ferropénica , Colesterol , Dislipidemias , Conducta Alimentaria , Glucosa , Hematócrito , Hospitales Generales , Peso Corporal Ideal , Madres , Obesidad , Sobrepeso , Delgadez , Pesos y Medidas
10.
Artículo en Coreano | WPRIM (Pacífico Occidental) | ID: wpr-160027

RESUMEN

The prevalence of obesity in children has steadily risen during recent years in developed countries. Child obesity has become a major concern to health providers since it has grown to epidemic proportions over the past few decades. This study was conducted to investigate the biochemical status, dietary habits and life styles according to the obesity degree among obese children residing in the Gyungbuk area. The subjects were 148 elementary school students (boy 103, girl 45) and classified as mildly obese (n = 56), moderately obese (n = 61) and severely obese (n = 31) by the obesity index. The average body weight and height increased significantly according to the obesity degree (P <0.05, P <0.001). Serum cholesterol concentration came under the normal level in all groups. Serum AST activity increased according to the obesity degree but it was not significant. Serum ALT activity increased according to the obesity degree (P <0.05). Dietary habit score was lower significantly according to the obesity degree (P <0.01). Life style of the subjects was significantly different for the level of 'healthy state (P <0.05)', 'body perception (P <0.01)', 'watching TV and video (P <0.05)', 'normal sleeping hour (P <0.05)' and 'degree of stress (P <0.05)' according to the obesity degree. A positive relationship between obesity index and blood pressure, ALT has been shown in the subjects. Obesity index and dietary habit scores were negatively associated. Therefore, these results suggest that a practical nutrition-exercise education program for the prevention of child obesity should be provided to elementary school children.


Asunto(s)
Niño , Humanos , Presión Sanguínea , Peso Corporal , Colesterol , Países Desarrollados , Conducta Alimentaria , Estilo de Vida , Obesidad , Porfirinas , Prevalencia
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