Effect of irradiation on metabolism of desoxynucleosides and role of hormonal factors in changes in their tissue and urine levels

1968 ◽  
Vol 66 (1) ◽  
pp. 770-771
Author(s):  
T. A. Fedorova ◽  
V. K. Mazurik ◽  
M. A. Lomova ◽  
M. M. Skurikhina ◽  
E. M. Belyaeva ◽  
...  
Reproduction ◽  
2017 ◽  
Vol 153 (4) ◽  
pp. R133-R149 ◽  
Author(s):  
A E Newell-Fugate

With the increasing knowledge that gender influences normal physiology, much biomedical research has begun to focus on the differential effects of sex on tissue function. Sexual dimorphism in mammals is due to the combined effects of both genetic and hormonal factors. Hormonal factors are mutable particularly in females in whom the estrous cycle dominates the hormonal milieu. Given the severity of the obesity epidemic and the fact that there are differences in the obesity rates in men and women, the role of sex in white adipose tissue function is being recognized as increasingly important. Although sex differences in white adipose tissue distribution are well established, the mechanisms affecting differential function of adipocytes within white adipose tissue in males and females remain largely understudied and poorly understood. One of the largest differences in the endocrine environment in males and females is the concentration of circulating androgens and estrogens. This review examines the effects of androgens and estrogens on lipolysis/lipogenesis, adipocyte differentiation, insulin sensitivity and adipokine production in adipocytes from white adipose tissue with a specific emphasis on the sexual dimorphism of adipocyte function in white adipose tissue during both health and disease.


2013 ◽  
Vol 1 ◽  
pp. 14-19 ◽  
Author(s):  
Krystyna Serkies ◽  
Marcin Sinacki ◽  
Jacek Jassem

Oncology ◽  
1993 ◽  
Vol 50 (4) ◽  
pp. 309-315 ◽  
Author(s):  
Fabio Levi ◽  
Silvia Franceschi ◽  
Cristina Gulie ◽  
Eva Negri ◽  
Carlo La Vecchia

1990 ◽  
Vol 258 (2) ◽  
pp. F305-F310
Author(s):  
H. Suzuki ◽  
A. Hishida ◽  
K. Ohishi ◽  
M. Kimura ◽  
N. Honda

Studies were performed on previously nephrectomized dogs to examine roles of hormonal factors in plasma potassium alterations in acute alkalosis. Respiratory and metabolic alkalosis were induced by hyperventilation and intravenous NaHCO3 or tris(hydroxymethyl)aminomethane (Tris) infusion, respectively. Respiratory and NaHCO3-induced alkalosis provoked decreases in plasma potassium from the control value of 5.12 +/- 0.68 (SE) to 4.21 +/- 0.55 meq/l (P less than 0.01) and from 4.65 +/- 0.26 to 3.91 +/- 0.16 meq/l (P less than 0.01) within 180 min, respectively. In contrast, Tris-induced alkalosis elicited an increase in plasma potassium from the control value of 4.56 +/- 0.30 to 5.31 +/- 0.30 meq/l (P less than 0.01). Hypokalemia in respiratory alkalosis was associated with a decrease in the plasma norepinephrine concentration from the control level of 377 +/- 104 to 155 +/- 41 pg/ml (P less than 0.05) but not with changes in plasma levels of epinephrine, insulin, glucagon, cortisol, and aldosterone. However, this hypokalemia was not affected by phentolamine. Also, somatostatin did not modify the hypokalemic response. NaHCO3-induced hypokalemia was associated with a decline in the plasma aldosterone and norepinephrine concentrations. The decline in plasma norepinephrine in NaHCO3-induced alkalosis followed the decrease in plasma potassium. In Tris-induced alkalosis, plasma insulin increased but norepinephrine decreased. The findings do not suggest fundamental roles of the hormonal factors in the plasma potassium alterations in bilaterally nephrectomized dogs with acute alkalosis.


2014 ◽  
Vol 20 (5) ◽  
pp. 527-536 ◽  
Author(s):  
David H Miller ◽  
Franz Fazekas ◽  
Xavier Montalban ◽  
Stephen C Reingold ◽  
Maria Trojano

Background: Multiple sclerosis (MS) is influenced by pregnancy, sex and hormonal factors. Objectives: A comprehensive understanding of the role of pregnancy, sex and hormonal factors can provide insights into disease mechanisms, and new therapeutic developments and can provide improved patient care and treatment. Methods: Based on an international conference of experts and a comprehensive PubMed search for publications on these areas in MS, we provide a review of what is known about the impact of these factors on disease demographics, etiology, pathophysiology and clinical course and outcomes. Results and conclusions: Recommendations are provided for counseling and management of people with MS before conception, during pregnancy and after delivery. The use of disease-modifying and symptomatic therapies in pregnancy is problematic and such treatments are normally discontinued. Available knowledge about the impact of treatment on the mother, fetus and newborn is discussed. Recommendations for future research to fill knowledge gaps and clarify inconsistencies in available data are made.


1974 ◽  
Vol 147 (1) ◽  
pp. 163-185 ◽  
Author(s):  
P. SIVASUBRAMANIAN ◽  
S. FRIEDMAN ◽  
G. FRAENKEL

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