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Öğe The Effect of Low Dose Zinc Supplementation to Serum Estrogen and Progesterone Levels in Post-menopausal Women(HUMANA PRESS INC, 2008) Sunar, Füsun; Görmüş, Zülfikare Işık; Baltacı, Abdülkerim Kasım; Moğulkoç, RasimThe objective of the present study is to investigate how low-dose zinc supplementation for 2 weeks in the post-menopausal period influences levels of estrogen and progesterone in the serum. The study registered 32 natural menopause patients, who were allocated to four groups with equal number of patients. Group 1, control group, which was not subjected to any procedure. Group 2, the group that was supplemented with 15 mg/day zinc sulfate for 2 weeks. Group 3, the group that was given hormone replacement therapy (0.625 mg estrogen+ 5 mg medroxyprogesterone acetate/day) for 2 weeks. Group 4, the group that received hormone replacement therapy (0.625 mg estrogen+5 mg medroxyprogesterone acetate/day) and zinc sulfate (15 mg/day) for 2 weeks. Blood samples were collected twice from each subject, once at the beginning of the study, and once at the end of the 4-week procedure to determine estrogen (E2) and progesterone levels. Variance analysis was employed in the statistical evaluation of data. Level of significance was set at p < 0.05. No significant difference was found between the estrogen and progesterone levels of groups 1 and 2. Groups 3 and 4 had higher estrogen and progesterone levels than groups 1 and 2 (p < 0.05). Estrogen and progesterone levels in groups 3 and 4 were not different. Results of the study show that low-dose zinc supplementation to post-menopausal women for 2 weeks does not have a significant effect on the concerned parameters.Öğe The Effect of Zinc Deficiency and Supplementation on Elements in the Kidney Tissue of Ovariectomized Rats: Histopathologic Changes(VERLAG HANS HUBER, 2017) Baltacı, Abdülkerim Kasım; Sunar, Füsun; Moğulkoç, Rasim; Toy, HaticeThe objective of the present study is to determine the effects of zinc deficiency in and zinc supplementation to ovariectomized rats on some elements in kidney tissue. The study included 40 Sprague-Dawley type adult female rats. The experimental animals were randomized into four groups with equal numbers as follows: Group 1: Control (10). Group 2: Ovariectomized control (10). Group 3: Ovariectomized + zinc supplemented (10). Group 4: Ovariectomized + zinc deficient (10). After the animals were decapitated at the end of the experiment, element levels were determined by Atomic Emission (ICP-AES) as mg/g/wet tissue for calcium, phosphate, zinc, aluminum, copper, iron, lithium, and manganese and mu g/g/wet tissue for magnesium in the kidney tissue. Additionally, the tissue samples were subjected to a histopathologic assessment. An examination of the study results showed that ovariectomy significantly reduced calcium, phosphorus, and zinc levels, while zinc supplementation to the rats following ovariectomy restored the reduced element levels to normal (0.10 +/- 0.03, 0.85 +/- 0.16, 0.11 +/- 0.03 vs 0.19 +/- 0.06, 1.86 +/- 0.18, 0.52 +/- 0.05). Group 4, which was both ovariectomized and fed on a zinc-deficient diet, had significantly lower aluminum, copper, and lithium values. Calcification, inflammation, and sclerotic changes in group 4, the group which was fed on a zinc-deficient diet, were greater in comparison to other groups (p < 0.05). Results of the study suggest that ovariectomy + zinc deficiency leads to calcification, inflammation, and sclerotic changes in renal tissue and significantly reduces element levels, whereas zinc supplementation after ovariectomy restores the lowered element levels to normal.Öğe The effect of zinc deficiency and zinc supplementation on element levels in the bone tissue of ovariectomized rats: Histopathologic changes(TAYLOR & FRANCIS LTD, 2014) Baltacı, Abdülkerim Kasım; Sunar, Füsun; Moğulkoç, Rasim; Acar, Musa; Toy, HaticeObjective: Study aimed to determine the effects of zinc supplementation/deficiency on the histological structure and elements levels in bone tissue in ovariectomized rats. Methods: The study included 40 Sprague-Dawley type adult female rats, divided as follows: Control, ovariectomized, ovariectomized + zinc supplemented, ovariectomized + zinc deficient groups. At the end of the study bone tissues (femur) were collected to determine the levels of calcium, phosphorus, magnesium, zinc, iron, aluminium, chrome, lithium, lead, nickel, and manganese. The bone tissue was examined for histopathology. Results: Ovariectomy leaded to significant decrease in magnesium. Zinc supplementation to ovariectomized rats restored the reduced calcium, phosphorus, zinc. However, zinc deficiency in ovariectomized rats further reduced calcium, phosphorus, zinc, and manganese levels. Zinc deficiency in ovariectomized significantly increased Al, Cr, Li, Pb, and Ni levels. Tissue integrity was impaired due to ovariectomy and zinc deficiency. Conclusion: Ovariectomy and zinc deficiency leads significant decreases elements of the bone.Öğe Zinc Deficiency and Supplementation in Ovariectomized Rats: Their Effect on Serum Estrogen and Progesterone Levels and Their Relation to Calcium and Phosphorus(Univ Karachi, 2009) Sunar, Füsun; Baltacı, Abdulkerim Kasım; Ergene, Neyhan; Moğulkoç, RasimThe aim of this study is to examine how zinc deficiency or supplementation affects estrogen and progesterone and calcium and phosphorus levels in the serum. The study was carried out on 40 adult female rats of Spraque-Dawley species. The rats were allocated to four groups: Group 1: Control, Group 2: Ovariectomized (OVX) control. Group 3: OVX-Zinc-supplemented. Group 4: OVX-Zinc-deficient. Blood samples were taken from the experimental animals by decapitation method and analyzed in terms of estrogen, progesterone, calcium, phosphorus, magnesium and zinc levels. Group 1 had the highest estrogen levels (p<0.05). Estrogen levels in group 3 were higher than those in groups 2 and 4 (p<0.05). The lowest estrogen levels were found in group 4 (p<0.05). Progesterone levels were higher in group I than in groups 2, 3 and 4 and the same parameter in group 3 was higher than those in groups 2 and 4. The highest calcium and phosphorus levels were obtained in groups I and 3 (p<0.05). Calcium and phosphorus levels in group 2 were higher than those in group 4 (p<0.05). There was no difference among groups with regard to magnesium levels. Group 3 had the highest serum zinc levels (p<0.05). Zinc levels in group I were higher than those in groups 2 and 4 and the levels in group 2 were higher than those in group 4. Findings of the study show that zinc deficiency causes a significant decrease in calcium and phosphorus levels and that zinc supplementation prevents these adversities in ovariectomized rats.
