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Introduction: Cisplatin is a drug widely used as an antineoplastic drug for treatment of malignant tumors. But because of its side effects on the different systems especially kidney (nephrotoxic), the use of this drug is very limited. Clinical as well as, laboratory animal studies have supported this observations. In this research study we have used stereological technique (3-D) for finding the changes, due to nephrotoxic effect of this drug, in the number of glomeruli in kidney (numerical density and total number).
Materials and Methods: For experimental, 30 rats were separated by random sampling in to 3 groups of 10 animals cache. The first group received acute dose (7.5 mg/kg) of the drug (cisplatin) in serum physiology (experimental group). The second group received equivalent placebo dose in serum physiology through peritoneum (control). The third group received chronic dose (1.25 mg/kg) for 5 days, in serum physiology. All the 30 animals, after 96 hours, were anesthetized, dissected and their right kidneys were removed and placed in fixative (10% formalin). Whole kidney specimens were processed for stereology by special method of sectioning for physical disector and glomeruli number were counted.
Results: Number of glumeroli and numerical density was estimated for experimental groups (control, acute and chronic) was 31707, 30415 and 30802 as well 162, 119, and 140 respectively.
Conclusion: Stereological methods could be very useful for investigation of chemical drug effects in organs with good validity.

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Introduction: Insulin-dependent diabetes mellitus (IDDM) or type 1 diabetes is an organ-specific autoimmune disease that caused by destruction of insulin-producing beta cells of the pancreas. Etiology of this disease is still unknown. It is seen that genetic and environmental factors play an important role for susceptibility to develop type 1 diabetes. The relationship between HLA associated factors and susceptibility to IDDM disease, was reported by several investigators. Also, some studies show that dermatoglyphics is associated with type 1 diabetes. However, it is maybe there is an association between HLA and dermatoglyphics inpatients'with type 1 diabetes and these characteristics could be applied for diagnosis of disease.
Materials and Methods: In this study, the prevalence of HLA (with using standard microlymphocytotoxicity method) and dermatoglyphics determined in 30 Iranian patients with IDDM and 30 normal healthy controls with similar ethnic background and the same geographical area.
Results: A significantly higher frequency of HLA-DQ, A2, DR3 and DQ2 were found in IDDM cases compared to the controls. The results obtain from dermatoglyphics showed that line ab was reduced in male and female type 1 diabetes. The reciever operating chractristics curve showed that the positive point for lines ab in right and left hands were 34.7 and 35.25, respectively.
Discussion: There is no association between HLA and dermatoglyphics.
With considering of genes encoding of HLA separated from genes determining dermatoglyphics, HLA typing and dermatoglyphics seem to be interesting tools for genetic studies related to type 1 diabetes. Further studies are recommended in order to provide more insight into the susceptibility to this disorder.

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Introduction: Diabetes  during  its  progress can  result  in  nephropathy.  Some  of  its  symptoms  are  increasing  kidney  size  and  weight  and  its  components.  Regarding  useful  components  of  onion  and  its  antioxidant, decreasing  stress  oxidative  and b decreasing  blood  glucose  effects. This  investigation  is designed  to  study  the  effect  of  onion  water-alcohol  extract  in  preventing  nephropathy  and  its  effect  on  kidney  structure  based  on  stereology  method.
Materials  and  Methods: Four  groups  of  matured  vistar  rats (n=8)  were  selected randomly (control  group, control + extract  group, diabetic  only  group, diabetic + extract  group). Diabetes  was  induced  by  injecting  interperitoneal  sreptozotocin  (60mg/kg). The  control+ extract group  and  diabetic + extract  group  were  treated  by  onion-water  extract (50 mg/rat)every day  for  four  weeks. Then  all  groups  were  anesthetized  and  their  left  kidney  was  removed  and  fixed  in  Bouin  fixative. After  histologic  passage  and H & E  dying, using  stereologic  techniques, qualitative  measurement  was  performed  by  Cavalier  method  for  cortex, medulla, glomerulus  and  kidney  size.  Data analysis  was  done  by  SPSS  software  using one  way  anova, tukey  and  paired  test. p<0.05  was  considered  significant.
Results: The  primary  and  secondary  weight  of  rats  in  only  diabetic  group  and  diabetic  + extract  group  was  not  different, but  in  control  group  and  control  + extract  group  was  significantly  different (p<0.05). Medulla, cortex  and  whole  kidney  size  in  only  diabetic  group  in  comparison  with  diabetic+ extract  group  had  no  difference, but  total  glomerular  size  in  diabetic  only  group  and  diabetic + extract  group  was  significantly  different (p<0.001).
Conclusion: Experimental  induction  of  diabetes  by  STZ  in  a  short  period  showed  that  onion  extract  can  prevent  glomerular  hypertrophy  and  increasing  kidney  weight  in  diabetic  rats, but  had  no  effect  on  overall  kidney  size. So  the  study  of  onion  extract  effects  on  kidney  structure  during  a  long  period  is  recommended.      
 
 
 

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Introduction: In diabetes mellitus the increase of AgII (Angiotensin II), IGF-1(insulin like growth factor-1) and growth hormone induce kidney lesions especially changes in content and thickness of GBM and widening and fusion of podocyte pedicles. In this research for the first time the combination of Losartan (AT1 receptor blocker) and Octreotide (Somatostatin analogue) were used in order to prevent glomerular epithelial lesions.
Materials & Methods: In this experimental study 15 male rats (2 months age) were uninephrectomised from left flank and divided in 5 groups (3 per group). 7 days later diabetes was induced in 2th, 3th, 4th and 5th group by Alloxan (120mg/kg) subcutaneously. 5 days after diabetes induction, the third group received Losartan (5mg/kg/day) orally, 4th group Octretide (10 ŭg/day) subcutaneously and 5th group both two drugs with the mentioned doses for 8 weeks. The 2th group was served as diabetic non treatment group. Kidneys of all groups were fixed by perfusion technique. After second fixation of 1 mm3 cortex parts in Osmium Tetroxide, they were processed in TAAB812 resin for embedding. Thin sections (600 nm thickness) were prepared and investigated by transmission electron microscope qualitatively.
Results: Losartan inhibited fusion and thickening of podocyte pedicles but in some cases couldn,t maintain the 3 layer form of GBM. Octreotide had little effect on inhibition of fusion and thickening of podocyte pedicles and no effect in 3 layer form maintaining of GBM. Combined therapy inhibited fusion and thickening of podocyte pedicles and maintained 3 layer form of GBM but in some cases the lamina rara near endothelium was not seen.
Conclusion: Octreotide have little effect on prevention of glomerular epithelium lesions. However Losartan could prevent glomerular epithelium lesions well, but combined drug therapy showed better results comparing Losartan.