A K Baltaci

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..The aim of this study was to investigate how zinc-deficiency and testosterone supplementation, both in combination and individually, affect plasma LH, FSH and leptin levels in castrated rats...

..Pinealectomy results in a significant increase in lactate levels in rats subjected to an acute swimming exercise. This increase in lactate levels may be associated with the decrease observed in zinc levels after pinealectomy...

..In addition, long-term administration of melatonin to rats leads to an increase in both leptin and zinc concentrations...

..The present study aimed to explore the effect of melatonin administration on lipid peroxidation in various tissues of rats with streptozocin induced diabetes and subjected to an acute swimming exercise...

..001). The results of the present study show that basal and stimulated plasma vasopressin levels are reduced in PTU-induced hypothyroidism. However, L-thyroxine treatment following hypothyroidism prevents this reduction...

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..The present study aims to explore the effect of zinc supplementation on lipid peroxidation and lactate levels in rats having diabetes induced by streptozotocin and subjected to acute swimming exercise...

..However, pinealectomy intensifies the increases in TNF-alpha levels in ovariectomized and estradiol and progesterone supplemented rats, whereas melatonin reduces TNF-alpha levels in ovariectomized rats...

..However, high-dose thyroxine administration in addition to induced hypothyroidism increased oxidative damage in the same tissues and that this damage could not be prevented despite the increase in the antioxidant system activity...

..Also, selenium supplementation offsets the decrease in zinc levels in rats subjected to vigorous swimming (Tab. 3, Ref. 20)...

..01). Results of the present study show that an acute swimming exercise and/or stress factors associated with an acute exercise inhibit leptin secretion from the adipose tissue (Tab. 1, Ref. 21)...

..The objective of the present study is to examine how selenium supplementation affects lipid peroxidation in the brain tissue of rats subjected to acute swimming exercise...

..This study aims to examine how boron supplementation affects distribution of elements in the plasma of rats whose ovaries were removed and who were subjected to swimming exercise...

..Moreover, the results indicate that AVP response to hypertonic and hypovolemic stimulations does not undergo any change due to supplementation by L-thyroxine treatment and/or pinealectomy plus L-thyroxine...

..The objective of this study is to examine the histological effects of zinc and melatonin, alone or in combination, on rat testes...

..This study aims to determine the changes in plasma melatonin levels of rats performing acute swimming exercise, immediately following the exercise and after 24 and 48 hours...

..01). The results of this study suggest that zinc deficiency decreases the melatonin levels and zinc supplementation may increase the plasma melatonin levels in rats...

..To explore the changes in plasma leptin levels of rats with induced Toxoplasma gondii infection...

..However, administration of estradiol and progesterone in combination following ovariectomy inhibites increases of leptin levels...

..The results obtained from the study indicate that hyperthyroidism brings about some changes in the levels of some elements in rats. These changes might be associated with the elevation of zinc levels in hyperthyroidism (Tab. 2, Ref. 41)...

..Pinealectomy in addition to ovariectomy greatly increases the oxidative damage. However, female sex hormones supplementations to the Ovx and/or Ovx+Pnx rats protected against lipid peroxidation by activating the antioxidant system...

..The objective of the present study is to examine the effect on melatonin supplementation on plasma lactate levels and its relation with zinc in rats subjected to acute swimming exercise...

..These results suggest that magnesium supplementation positively influences the performance of training athletes by increasing erythrocyte and hemoglobin levels...

..The objective of the present study is to explore how zinc supplementation affects testosterone levels and its relation with lactate in rats subjected to acute swimming exercise...

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..05). The results of this study show that exercise and/or magnesium supplementation causes a rise of the adrenocorticotropic hormone, whereas cortisol is increased only as a result of combined exhaustion and magnesium supplements...

..The aim of this study was to investigate the effects of intraperitoneal (IP) boron administration on leptin and lactate levels in swimming exercise in ovariectomized rats...

..It can be concluded that physical activity brings about changes in leptin secretion, which in turn, can be significantly related with zinc (p < 0.01)...

..05). Magnesium supplementation has an important effect on glucose levels whereas it has no effect on insulin levels...

..05).The results of this study suggest that zinc deficiency increases renal tissue damage in ovariectomized rats and that zinc supplementation can be used to prevent this condition...

..The present study aims to investigate how exhaustion exercise affects thyroid hormones and testosterone levels in elite athletes who are supplemented with oral zinc sulfate for 4 weeks...

..001). The results of the present study indicate that l-thyroxine-induced experimental hyperthyroidism increased basal and stimulated AVP release in rats...

..These results indicate that zinc deficiency leads to a significant inhibition in plasma leptin levels, whereas zinc supplementation significantly increases plasma leptin...

..05). In conclusion, leptin levels of male type I diabetes patients are close to those of healthy sedentary males. The increase in leptin levels in both groups is in proportion to the BMI of individuals...

..05). This study demonstrate that zinc deficiency increased bone tissue damage in ovariectomized rats and that zinc supplementation prevented this damage...

..005) and after (p<0.05) exercise. These results suggest that zinc supplementation has a positive effect on hematological parameters in athletes...

..01). The suppression was higher in group II than in group IV. These results indicate that testicular damage caused by zinc deficiency may be reduced by melatonin deficiency...

..05). These levels increased after 6 wk of supplementation (p<0.05) and showed no significant differences with those at the end of the study...

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..Testosterone secretion increases in parallel to thyroid hormones in hyperthyroidism. The aim of this study was to investigate the effects of melatonin application on total T3, T4 and testosterone in hyperthyroid rats...

..89, n=40, p=0.000). CONCLUSION: In cases where testis torsion is identified, administration of melatonin just before torsion may reduce local and systemic free radical damage...

..01). Our findings suggest that both swimming exercise and zinc deficiency result in an increase of lipid peroxidation in tissues and that zinc supplementation prevents these alterations by the activation of the antioxidant system...

..01, both cases). These results suggest that zinc and/or melatonin deficiency have a negative influence on cellular immunity in rats with toxoplasmosis...

..05). Our findings suggest that zinc deficiency effects the hematologic parameters mentioned negatively whereas zinc supplementation has a positive influence...

..001). These results show that hyperthyroidism increased oxidative damage in cerebral, hepatic and cardiac tissues of rat. Melatonin supplementation may also suppress oxidative damage...

..Pinealectomy in addition to ovariectomy, increases lipid peroxidation, but, estradiol and progesterone supplementations to the ovariectomized-pinealectomized rats protect against lipid peroxidation to a significant extent...

..001), while it was highest in the zinc-supplemented rats (p < 0.001). The present study suggests that long-term exposure to low-frequency EMF increases lipid peroxidation in the brain, which may be ameliorated by zinc supplementation...

..Preoperative zinc administration does not prevent the leptin response after extracorporeal circulation...

..The aim of the present study was to determine levels of lipid peroxidation caused by induced hyperthyroidism in cerebral, hepatic and cardiac tissues of pinealectomized rats...

..The present study aimed at determining how 3-week intraperitoneal melatonin administration affected oxidative stress caused by experimental hyperthyroidism...

..01). Plasma LH levels may be more effective than testosterone on plasma leptin and zinc may be an important mediator of the effect LH has on leptin...

..001). The results of our study demonstrate that MDA and GSH levels in kidney and testis tissues increased due to hyperthyroidism and that pinealectomy made the increase in MDA levels more apparent, while decreasing GSH levels...

..However, the mechanisms of these cognitive alterations are unknown. The aim of this study is to investigate the effects of maternal deprivation on cognition and melatonin production in adolescent male and female rats...

..This study aims at investigating how zinc deficiency and pinealectomy affect nitric oxide levels in rats infected by Toxoplasma gondii...

..These results show that melatonin has a thyroid function suppressing action, just the opposite to the actions of zinc. When zinc is administered along with melatonin, its thyroid function suppression is diminished...

..In the present study, it was aimed to determine the effect of estradiol and progesterone on homocysteine levels in pinealectomized and ovariectomized rats...

..The activity of NADPH oxidase was significantly lower in pretreatment patients relative to controls (p<0.05). The activity increased after iron supplementation to levels that had no significant differences relative to controls...

..Although the increase in serum leptin levels is in direct proportion with BMI in general, the major determinant of serum leptin level is the body fat rate. As regular exercising reduces body fat rate, it also reduces serum leptin levels...