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    Effect of zinc supplementation on hematological parameters in athletes
    (HUMANA PRESS INC, 2004) Kilic, M; Baltaci, AK; Gunay, M
    The hematological effects of oral supplementation of zinc to training athletes are reported in the present study. A total of 30 subjects between 16 and 22 yr of age volunteered to participate in a 4-wk study They were equally divided into three groups. Group I acted as resting controls receiving daily doses of 3 mg Zn/kg body wt. Group 2 was actively engaged in wrestling and exercised for 90-120 min, 5 d a week. Group 3 was also actively engaged in wrestling and exercised for 90-120 min, 5 d a week, but they were supplemented with 3 mg Zn/kg body wt per day. The erythrocyte, leukocyte, and thrombocyte counts and the hemoglobin values of all subjects participating in the study were measured before and after exercise at the beginning and at the end of the 4-wk study period. In all groups, there were no significant differences in the measured parameters before and after exercise. At the end of the supplementation period, the parameters of the subjects in groups 1 and 3 were significantly higher than those of group 2, both before (p<0.005) and after (p<0.05) exercise. These results suggest that zinc supplementation has a positive effect on hematological parameters in athletes.
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    Melatonin supplementation to rats subjected to acute swimming exercise: Its effect on plasma lactate levels and relation with zinc
    (MAGHIRA & MAAS PUBLICATIONS, 2006) Kaya, O; Gokdemir, K; Kilic, M; Baltaci, AK
    OBJECTIVE: 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. METHODS:Thirty adult male rats of Spraque-Dawley species were allocated to 3 groups, each containing an equal number of rats: general control group which was not subjected to any procedure (Group 1), the group which was subjected to 30 minutes acute swimming exercise (Group 2), and the group which was subjected to 30 minutes acute swimming exercise after 4-week intraperitoneal (i.p.) melatonin (3 mg/kg/day) supplementation. Lactate and zinc levels in the plasma were studied in the blood samples taken from the experimental animals by decapitation method. RESULTS:The animals in the control group, which was not subjected to any procedure (group 1), had higher lactate levels than those in groups 2 and 3 (p < 0,05). Lactate levels in the swimming group supplemented with melatonin (group 3) were lower than those in group 2 (swimming group) (p < 0,05). The highest plasma zinc levels were obtained in the melatonin-supplemented swimming group (group 3) (p < 0,05). Group 2 (swimming control) had the lowest plasma zinc levels (p < 0,05). CONCLUSION:Results of the study demonstrate that melatonin supplementation to rats subjected to acute swimming exercise reduces lactate levels, thereby delaying exhaustion. Increased zinc levels may be mediating this melatonin effect.
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    Nodulation and growth of bean plants inoculated with genetically modified rhizobium etli strains and azospirillum brasilense
    (PISA UNIV PRESS, 2004) Er, F; Kilic, M; Brohi, AR; Ogut, M
    Azospirillum co-inoculation with the wild type Rhizobium strains increased the nodulation and growth in bean plants compared to plants inoculated with Rhizobium alone. The two genetically modified bacteria were producing strain, R. etli TFX, with enhanced competitiveness and a sodium azide A trifolitoxin resistant strain, R. etli CFN030, with nitrogen fixation ability. The objective of this study was to test whether the Azospirillum co-inoculation with either genetically modified rhizobial strain affects plant growth. A completely randomized pot experiment with 5 replications was conducted. The plant growth medium was a mixture of soil, sand, and perlite. Five plants were each harvested at 15, 30, and 45 days after inoculation (DAI). There was not a significant difference in nodule number between treatments (p = 0.05). Nodules incited by R. etli CFN030 weighed more nodules incited by than the R. etli TFX. Azospirillum co-inoculation did not significantly change the nodule weights. The plants inoculated with R. etli CFN030 accumulated the highest root, shoot, and total weights at each sampling date except for root mass at 30 DAI There was significant difference in shoot and root N content between some bacterial treatments and control at 15 and 30 DAI, but this was less pronounced at 45 DAI Azospirillum co-inoculation effect on nodulation and plant growth of bean is not as straightforward for the genetically engineered rhizobia as it is for wild type rhizobia.