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Articles by A. Khaki
Total Records ( 2 ) for A. Khaki
  F. Rajaii , A.A. Khaki , A. Khaki , F. Khorshid , N. Borhani , H. Jfraii , H. Haghdust and N. Gheibi
  The present study examined the histopathologic effects of this gas on the mouse liver in acute and chronic exposure. Twenty eight male mice were divided into 4 groups. Group 1 (G1) as control ( not exposed to gas ), group 2 (G2) were exposed to high dose of (100 ppm) and group 3 (G3) and group 4 (G4) were exposed to low dose of sulfur dioxide for 5 min for 1 and 3 weeks (20 ppm). Finally the mice were sacrificed and liver were assessed macroscopically and then the biopsy of the liver were assessed microscopically. The data were analyzed statistically. The results showed that the mean number of kupffer cells in G2, G3 and G4 significantly increased (9 ± 1.0, 10 ± 1.0, 11 ± 1.2 vs 7 ± 1.4 and p<0.0001). Qualitative observations also showed significantly increase in the rate of liver cell necrosis and deformation of hepatic cords and sinusoids with an increase of inflammatory reactions in experimental mice. Present study was indicated that the liver can be damaged by the chronic and acute exposure of sulfur dioxide.
  S.M. Alavi-Shoushtari , S. Asri Rezai , M.H. Kh. Ansari and A. Khaki
  In order to determine zinc and catalase content of seminal plasma in the buffalo and to study their associations with the semen characteristics, 54 semen samples were collected from 10 buffalo bulls; semen volume and sperm concentration, gross and progressive motility and viability were evaluated, seminal plasma was then harvested by centrifugation and its zinc content was estimated by atomic absorption spectrophotometer and its catalase activity determined by using a commercial kit. The zinc content of the seminal plasma (Mean ± SEM) was recorded as 154.40 ± 1.74 mg L-1, while, the mean catalase value was 32.00 ± 0.42 U mL-1. The mean zinc values was highly correlated with sperm progressive motility and viability and with catalase values (p = 0.000 for all) and also was associated with gross motility (p = 0.020) and negatively with abnormal morphology (p = 0.049). The catalase values were highly associated with sperm progressive motility, viability and zinc content (p = 0.000 for all) and was associated with sperm gross motility (p = 0.024). For further clarification of these correlations, the samples were categorized in three groups of excellent (Ex, > 90% motile, n = 33), good (Go, 80-89% motile, n = 15) and moderate (Mo, < 79% motile, n = 6) according to their percentage of sperm motility. The mean progressive motility in Ex group was 92.54 ± 0.51%, in Go group was 81.66 ± 0.62% and in Mo group was 71.66 ± 1.05%. The mean zinc and catalase values were recorded as 161.07 ± 1.63 mg L-1 and 33.41 ± 0.34 U mL-1 in Ex, 146.70 ± 1.91 mg L-1 and 31.01 ± 0.67 in Go and 136.42 ± 4.97 mg L-1 and 26.51 ± 0.87 U mL-1 in Mo groups. The mean zinc value in Ex group was highly associated with sperm motility, viability and catalase values, in Go group was associated with catalase values and highly associated with sperm abnormal morphology and in Mo group it was highly associations with catalase values only. The mean catalase value in Ex group, was highly associated with sperm motility and viability, in Go group was associated with zinc content and in Mo groups was highly associated with the zinc content. These results show that seminal plasma zinc and catalase content are correlated with semen characteristics and synergistically act to preserve motility and viability of the spermatozoa after ejaculation.
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