Activation of chloride secretion by isoflavone genistein in endometrial epithelial cells.
نویسندگان
چکیده
BACKGROUND/AIM Genistein, the most active isoflavone found primarily in soybeans, alters ion transport functions in intestinal and airway epithelia. The present study aims to investigate the acute effects and mechanisms of action of genistein in immortalized porcine endometrial epithelial cells. METHODS Ussing chamber technique was used for transepithelial electrical measurements. RESULTS Genistein increased short-circuit currents (Isc) which were inhibited by glibenclamide, NPPB, CFTRinh-172, DIDS or bumetanide, but not amiloride. In experiments with amphotericin B-permeabilized monolayers, genistein activated the apical Cl- current and barium-sensitive basolateral K+ current while inhibiting the apical K+ current. Genistein failed to increase the Isc in the presence of forskolin or IBMX, but did increase the Isc in UTP. Pretreatment with genistein also abolished the increase in the Isc when induced by forskolin, IBMX or UTP. However, Ca2+-chelating BAPTA-AM did not affect the genistein-induced increase in the Isc. The genistein-stimulated Isc was reduced by tyrosine kinase inhibitors, tyrphostin A23 or AG490. However, vanadate, a tyrosine phosphatase inhibitor, failed to inhibit the genistein response. Estrogen receptor antagonist ICI182,780 did not alter the genistein’s action. CONCLUSION The soy isoflavone, genistein, stimulates Cl- secretion in endometrial epithelial cells possibly via a direct activation of CFTR which appears to be modulated through a tyrosine kinase-dependent pathway. The present findings may be of benefit for the therapeutic application of genistein in the treatment of electrolyte transport disorders in the epithelia.
منابع مشابه
Soy Isoflavone Genistein Is a Potential Agent for Metabolic Syndrome Treatment: A Narrative Review
Metabolic syndrome has a high prevalence (about 22.4% in adult individuals) in developed countries. Inflammation due to obesity and fat accumulation is the most important factor in the progression of metabolic syndrome. In cells which have a receptor for insulin hormone, inflammatory mediators target the insulin signaling pathway and cause insulin resistance. Peroxisome proliferator-activated r...
متن کاملSildenafil Effect on Nitric Oxide Secretion by Normal Human Endometrial Epithelial Cells Cultured In vitro
متن کامل
P-113: Survey of In Vitro Effect of Resveratrol on Nitric Oxide Secretion of Human Endometrial Epithelial Cells
Background: Resveratrol is a natural polyphe- nolic compound, synthesized by plants as a phytoalexin and protects against ultraviolet radiation and fungal infection. Nitric oxide is formed from L-arginine through nitric oxide synthases (NOS), a group of enzymes that structurally resemble cytochrome P-450 reductase. In females, circulating NO is increased during follicle development and decrease...
متن کاملGenistein Induces Apoptosis and Inhibits Proliferation of HT29 Colon Cancer Cells
Soybean isoflavone genistein has multiple anticancer properties and its pro-apoptotic and anti-proliferative effects have been studied in different cancer cells. However, the mechanisms of action of genistein and its molecular targets on human colon cells have not been fully elucidated. Therefore, caspase-3 and p38 mitogen-activated protein kinase (p38 MAPK) as the main therapeutic targets...
متن کاملEffects of dietary isoflavone-genistein on hematological and immunological parameters in pre - brood stock beluga, Huso huso
This study was carried out with the aim of detecting the dietary effects of isoflavone-genistein on hematological and immunological parameters in beluga, Huso huso in a 12-week feeding period. Five isonitrogenous (45% crude protein) and isoenergetic (19.5 MJ kg -1) diets were formulated to contain four graded levels of isoflavone-genistein, namely 0, 0.2, 0.4, 0.8 and 1.6 g kg-1 diet. Fish (ini...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید
ثبت ناماگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید
ورودعنوان ژورنال:
- Cellular physiology and biochemistry : international journal of experimental cellular physiology, biochemistry, and pharmacology
دوره 32 5 شماره
صفحات -
تاریخ انتشار 2013