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Influence of Melatonin on the Proliferative and Apoptotic Responses of the Prostate under Normal and Hyperglycemic Conditions.

Gobbo, Marina; Dizeyi, Nishtman LU ; Abrahamsson, Per-Anders LU ; Bertilsson, Per-Anders LU ; Masitéli, Viviane Sanches; Pytlowanciv, Eloisa Zanin; Taboga, Sebastião R and Góes, Rejane M (2015) In Journal of Diabetes Research 2015.
Abstract
The antitumor properties of melatonin (MLT) are known for prostate cancer cells. This study investigated whether MLT affects prostate maturation and interferes with tissue injuries induced by diabetes. MLT was administered to Wistar rats from 5 weeks of age in the drinking water (10 μg/kg b.w.), and diabetes was induced at the 13th week by streptozotocin (4.5 mg/100g b.w., i.p.). The animals were euthanized in the 14th and 21st weeks. MLT reduced the immunostained cells for androgen receptor (AR) by 10% in younger rats. Diabetes decreased cell proliferation and increased apoptosis. MLT treatment impeded apoptosis (p = 0.02) and augmented proliferation (p = 0.0008) and PCNA content in prostate following long-term diabetes due to restoration... (More)
The antitumor properties of melatonin (MLT) are known for prostate cancer cells. This study investigated whether MLT affects prostate maturation and interferes with tissue injuries induced by diabetes. MLT was administered to Wistar rats from 5 weeks of age in the drinking water (10 μg/kg b.w.), and diabetes was induced at the 13th week by streptozotocin (4.5 mg/100g b.w., i.p.). The animals were euthanized in the 14th and 21st weeks. MLT reduced the immunostained cells for androgen receptor (AR) by 10% in younger rats. Diabetes decreased cell proliferation and increased apoptosis. MLT treatment impeded apoptosis (p = 0.02) and augmented proliferation (p = 0.0008) and PCNA content in prostate following long-term diabetes due to restoration of testosterone levels and expression of melatonin receptor type 1B. The effect of MLT (500 µM, 5 mM, and 10 mM) on androgen-dependent (22Rv1) and androgen-independent (PC3) cancer cells and human prostate epithelial cells (PNTA1) under normal and hyperglycemic conditions (HG, 450 mg/dL) was analyzed. Contrary to PNTA1 and 22Rv1 cells, MLT improved the proliferation of PC3 cells in hyperglycemic medium. The combined data indicated that MLT had proliferative and antiapoptotic effects in prostate cells subjected to HG levels and it seems to involve specific MLT pathways rather than AR. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Journal of Diabetes Research
volume
2015
publisher
Hindawi Publishing Corporation
external identifiers
  • pmid:26295055
  • wos:000359233100001
  • scopus:84939181963
ISSN
2314-6753
DOI
10.1155/2015/538529
language
English
LU publication?
yes
id
ab3d0b7e-bfd5-4efe-8bdc-155fa248dd19 (old id 7840378)
alternative location
http://www.ncbi.nlm.nih.gov/pubmed/26295055?dopt=Abstract
date added to LUP
2015-09-06 16:07:01
date last changed
2017-10-22 03:12:40
@article{ab3d0b7e-bfd5-4efe-8bdc-155fa248dd19,
  abstract     = {The antitumor properties of melatonin (MLT) are known for prostate cancer cells. This study investigated whether MLT affects prostate maturation and interferes with tissue injuries induced by diabetes. MLT was administered to Wistar rats from 5 weeks of age in the drinking water (10 μg/kg b.w.), and diabetes was induced at the 13th week by streptozotocin (4.5 mg/100g b.w., i.p.). The animals were euthanized in the 14th and 21st weeks. MLT reduced the immunostained cells for androgen receptor (AR) by 10% in younger rats. Diabetes decreased cell proliferation and increased apoptosis. MLT treatment impeded apoptosis (p = 0.02) and augmented proliferation (p = 0.0008) and PCNA content in prostate following long-term diabetes due to restoration of testosterone levels and expression of melatonin receptor type 1B. The effect of MLT (500 µM, 5 mM, and 10 mM) on androgen-dependent (22Rv1) and androgen-independent (PC3) cancer cells and human prostate epithelial cells (PNTA1) under normal and hyperglycemic conditions (HG, 450 mg/dL) was analyzed. Contrary to PNTA1 and 22Rv1 cells, MLT improved the proliferation of PC3 cells in hyperglycemic medium. The combined data indicated that MLT had proliferative and antiapoptotic effects in prostate cells subjected to HG levels and it seems to involve specific MLT pathways rather than AR.},
  articleno    = {538529},
  author       = {Gobbo, Marina and Dizeyi, Nishtman and Abrahamsson, Per-Anders and Bertilsson, Per-Anders and Masitéli, Viviane Sanches and Pytlowanciv, Eloisa Zanin and Taboga, Sebastião R and Góes, Rejane M},
  issn         = {2314-6753},
  language     = {eng},
  publisher    = {Hindawi Publishing Corporation},
  series       = {Journal of Diabetes Research},
  title        = {Influence of Melatonin on the Proliferative and Apoptotic Responses of the Prostate under Normal and Hyperglycemic Conditions.},
  url          = {http://dx.doi.org/10.1155/2015/538529},
  volume       = {2015},
  year         = {2015},
}