title: [Changes of nerve growth factor and M3 subtype muscarinic receptor in the seminal vesicle of diabetic rats].
abstract: OBJECTIVE
  To investigate the effect of diabetic autonomic neuropathy on the seminal vesicle and search for the theoretical evidence for the prevention and treatment of diabetic infertility by observing changes in the contents of the nerve growth factor (NGF) and muscarinic M3 receptor in the seminal vesicle of diabetic rats.
  
  
  METHODS
  Diabetic models were established in 10 of the 15 male adult SD rats by intraperitoneal injection of streptozotocin (STZ), and the other 5 were included in a normal control group. Eight weeks after modeling, seminal vesicles were collected from the rats for HE and immunohistochemical staining.
  
  
  RESULTS
  Compared with the normal controls, the diabetic models showed a decreased number of smooth muscle cells, thinner cytoplasm of glandular epithelial cells and disordered structure in the seminal vesicle. The intensity of NGF-positive staining was significantly enhanced, but that of M3 markedly reduced in the diabetic group. There were statistically significant differences in the mean integrated optical density (IA) of muscarinic M3 receptors and NGF between the control and diabetic groups (0.0187 +/- 0.0024 vs 0.0100 +/- 0.0015 and 0.0209 +/- 0.0085 vs 0.0412 +/- 0.0117, P<0.01).
  
  
  CONCLUSIONS
  The changes in the expressions of NGF and M3 receptors in the seminal vesicle of diabetic rats suggest that diabetes mellitus may induce autonomic neuropathy of the seminal vesicle.
authors.affiliation: Research Institute of Family Planning, Tongjin Medical College, Huazhong University of Science and Technology, Wuhan, Hubei 430030, China.
authors.forename: Hai-e
authors.initials: HE
authors.lastname: Chen
authors.forename: Dun-zhen
authors.initials: DZ
authors.lastname: Xiao
mesh_terms: D000818:Animals; D003921:Diabetes Mellitus, Experimental / Q000378:metabolism*; D008297:Male; D020932:Nerve Growth Factor / Q000378:metabolism*; D051381:Rats; D017207:Rats, Sprague-Dawley; D043587:Receptor, Muscarinic M3 / Q000378:metabolism*; D012669:Seminal Vesicles / Q000378:metabolism*
chemical_list: D043587:Receptor, Muscarinic M3; D020932:Nerve Growth Factor