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Öğe THE EFFECT OF BARLEY GRASS ON ANTIOXIDANT CAPACITY AND DNA DAMAGE IN RAT WITH RENAL FAILURE(PARLAR SCIENTIFIC PUBLICATIONS (P S P), 2017) Comba, Bahat; Mis, Leyla; Uslu, Sema; Comba, ArzuThis study was aimed to search the effect of barley grass (BG) on the Total Antioxidant (TAS)-Oxidant Status (TOS) and DNA damage (8OHdG) in rat with renal failure. The rats which are used in the study were randomly divided into 4 groups that each of has 8 rats: Control (C) group; injected i.p. with physiological saline once a day for 7 days, GM group; Gentamicin (80 mg/kg/day) was injected i.p. for 7 days, BG group; was given oral BG (250 mg/kg/day) for 4 weeks, GM+BG group was injected gentamicin (80 mg/kg/day) with i.p. for 7 days and BG (250 mg/kg/day) was given by oral for 4 weeks. After from the process of experiment for 4 weeks, blood sample and kidney tissue were taken. The analyses of urea and creatinine were done by autoanalyser; TAS, TOS levels by colorimetric kits; 8OHdG level by ELISA kits in serum. The kidney tissues were examined histologically. In the GM+BG group was statistically decreased levels of urea, creatinine, TOS (p<0.05) and OSI (p<0.01) compared to GM group. In the group of BG was determined the levels of TAS p<0.05 statistically increased other groups. The statistical significance was not found in the level of serum 8OHdG differences between the groups. BG decreased widespread damage to the renal glomerulus and proximal tubulus. As a result, adverse effects of high dose gentamicin application such as kidney damage can be reduced when used barley grass.Öğe Effect of Wheatgrass on DNA Damage, Oxidative Stress Index and Histological Findings in Diabetic Rats(SOC CHILENA ANATOMIA, 2018) Mis, Leyla; Comba, Bahat; Uslu, Sema; Yeltekin, AsliThis study was aimed to search the effect of wheatgrass on the Total Antioxidan (TAS)-Oxidan Status (TOS) and DNA damage in rat with diabetes. The rats used in the study were randomly divided into 4 groups that each of has 10 rats: Control group; 1 ml single dose phosphate-citrate buffer injected i.p (pH: 4.5), Diabetes group; 45 mg/kg single dose streptozotocin injected i.p., Wheatgrass group; was given oral wheatgrass (10 ml/kg/day) for 6 weeks, Diabetes +Wheatgrass group; 45 mg/kg single dose streptozotocin injected i.p. and wheatgrass (10 mlikg/day) was given by oral during 6 weeks. After the process of experiment during 6 weeks, blood sample and pancreas tissue were taken. The analysis were done of blood glucose levels, TAS, TOS levels by colorimetric kits; DNA damage by ELISA kits in serum. The pancreas tissues were examined histopathologically. In the group of Diabetes+Wheatgrass was determined that the levels of glucose levels (p<0.001),TOS (p<0.05) and OSI (p<0.01) statistically decreased and heal histopatolojical compared to diabetes group. In the group of Wheatgrass was determined that the levels of TAS p<0.05 statistically increased from other groups. The statistical significance were not found in the level of serum 8OHdG differences between the groups. The beta cells were seen to increase in the group receiving wheatgrass for therapeutic purposes.As a conclusion, it was determined that wheatgrass strengthened the anti-oxidant defense system and reduced the glucose level in diabetic rats.Öğe Experimental study of in-vitro bioanalysis and in-vivo living tissue biocompatibility of Mg-Zn alloys(Springer Heidelberg, 2023) Comba, Bahat; Cicek, Bunyamin; Comba, Arzu; Sancak, Tunahan; Akveran, Gonul Arslan; Koc, Erkan; Sun, YavuzIn this study in-vitro bioanalysis and in-vivo living tissue biocompatibility were evaluated. Pure Mg and Mg + x Zn (x = 1 and 3 wt%) alloys have been used in the study. In vitro immersion and potentiodynamic corrosion were applied to these alloys in Hank's and artificial seawater solution. The materials were kept in living tissue (gluteus-superficial) for 7 weeks in-vivo (albino-rat). After 4 and 7 week, the control and experimental groups' urine parameters, blood mineral substance levels, and radiographic image controls were evaluated. It was observed that the bio-dissolution level decreased as the Zn-ratio increased. As a result, successful results were obtained in the biocompatible and biodegradable material class of Zn-doped Mg alloys used in the study. The dissolution amount of 1.03 mm/y (for Mg + 3Zn alloy) in Hank's solution was calculated. The % vitality was determined at the level of 117%.Öğe INVESTIGATION OF THE IMMUNOCASTRATION EFFICACY AND LONGEVITY OF A SINGLE DOSE GNRH VACCINE IN YOUNG MALE RATS(Parlar Scientific Publications (P S P), 2019) Eski, Funda; Mis, Leyla; Tasal, Ibrahim; Uslu, Baris Atalay; Comba, BahatConventionally, immunization protocol require an initial priming immunization followed by an antigen boost for adequate immunity and long-term immunization. In this study we were evaluate the immunocastration efficacy and longevity of immunization with a single-dose GnRH vaccine (Repro-Bloc (TM)) in young male rats. Rats in the vaccine group (VAC, n: 35) were treated with GnRH vaccine as single-dose (200 mu l) and the control group (C, n: 15) were also injected with saline solution. Blood samples from all rats were taken monthly for 6 months and at 12th month. GnRH antibody titers, testosterone and leptin levels were determined by commercial RIA kits. Rats at 6th and 12th months were sacrificed for histologic analysis of testes. GnRH antibody levels were found similar in the VAC and C groups (P>0.05) at -1 week. As compared to the C, GnRH antibody levels (pg/ml) of the VAC group at 1st, 2nd, 3rd and 4th months rose continuously and reached the peak level at 5th month, decreased at 6th month and increased again by the 12th month (P<0.05), whereas in the C group GnRH antibodies weren't different (P>0.05). Compared to the unchanged testosterone levels within the process in C group, serum testosterone levels of the VAC group were lower at 2nd month and higher at 3th month, and thereafter lower (P<0.05). Leptin levels were no difference between groups (P>0.05). There were significant differences in the testicle weights, sperm motility, sperm numbers and abnormal sperm rates between VAC and C groups at 6th and 12th months (P< 0.05). Histological examination showed no significant difference in testes between groups at 6th and 12th months (P>0.05). In conclusion, although the vaccine reduced the germinative and endocrine testicular function from 6th months to 12th months with the single-dose GnRH vaccine, the single-dose vaccination did not provide adequate effect in the genital organs in male rats. Further studies are needed to determine an optimal single-dose, longevity of the vaccine and route of administration for complete suppression on the genital organs in different animal species.Öğe Localisation of Estrogen Receptor Alpha and Progesterone Receptor B in Goat Ovaries During Breeding and Non-Breeding Season(KAFKAS UNIV, VETERINER FAKULTESI DERGISI, 2016) Uslu, Sema; Yoruk, Mecit; Mis, Leyla; Comba, BahatThe main objective of this study was to investigate the localisation of estrogen receptor alpha (ER-alpha) and progesterone receptor B (PR-B) by immunohistochemistry in goat ovaries during in- and out of breeding season. The ovaries obtained from goats slaughtered in breeding season (n=10) and non-breeding season (n=10) were used. From the same animals, blood samples were taken to determine the levels of serum steroid hormones (E-2, P-4). The ER-alpha and PR-B immunohistochemical distributions within the ovaries were determined by the ABC method. In breeding season, the ER-alpha was detected in the germinal epithelium and follicular granulosa cells. The PR-B was determined to concentrate on the corpus luteum (CL) cells. The same receptors were also found to be weak in the theca externa cells of preovulatory follicles. In non-breeding season, the ER-alpha germinal epithelium and smooth muscle cells of certain blood vessels showed a weak positive reaction. The PR-B was positively stained in the germinal epithelium and few stroma cells. It was suggested that the average steroid hormone profiles in breeding (E-2: 11.83 +/- 1.70 pg/mL, P-4: 10.08 +/- 1.58 ng/ml) and non-breeding season (E-2 2.33 +/- 0.85 pg/ml, P-4 0.21 +/- 0.04 ng/ml) correlated well with the localisation intensity of receptors in goat ovaries.
