Glucose-induced increase in circulating progenitor cells is blunted in polycystic amenorrhoeic subjects
Authors: Bairagi, Soumi; Gopal, Jayashree; Nathan, Abel A.; Babu, Subash S.; Kumar, N. Pavan; Dixit, Madhulika
Source: Human Reproduction, Volume 27, Number 3, 17 March 2012 , pp. 844-853(10)
Publisher: Oxford University Press
Glucose-induced kinetics of bone marrow-derived stem cells in healthy females is presently unknown. The objectives of this study were to determine whether circulating levels of CD133+, CD34+ and CD133+CD34+ cells increase in response to glucose load in healthy females and whether the kinetics is altered in amenorrhoeic women. The other objective of the work was to compare the endothelial differentiation potential of peripheral blood-derived endothelial progenitor cells (EPCs) from healthy versus amenorrhoeic women.
In this case–control study, 44 amenorrhoeic subjects and 36 age-matched females with no menstrual disturbance were recruited at Apollo Hospitals, a Tertiary health care center in Chennai, India. Circulating bone marrow-derived stem cells were measured by two color direct flow cytometry. Cultured progenitor cells were characterized at Day 7 and 14 for expression of endothelial markers and production of nitric oxide (NO) via immunofluoroscence.
The amenorrhoeic subjects were insulin resistant with homeostatic model of assessment of insulin resistance values of 3.33 ± 0.3 versus 1.75 ± 0.148 observed for controls (P< 0.0001). Among the amenorrhoeic subjects, 38 subjects had polycystic ovaries with no signs of hyperandrogenism. Fasting levels of CD133+, CD34+ and CD133+CD34+ cells were reduced in amenorrhoeic subjects (P< 0.001). There was a 1.5 to 2-fold increase in the circulating levels of these cells in response to 75 g oral glucose challenge at 1 and 2 h post-load conditions in controls, which was significantly blunted for CD133+ (P< 0.001) and CD133+CD34+ (P< 0.001) cells in amenorrhoeic subjects. A positive correlation was observed between estrogen and fasting CD133+ (r= 0.205, P= 0.070), CD34+ (r= 0.249, P= 0.027) and CD133+CD34+ (r= 0.217, P= 0.055) cell counts. Additionally, fasting counts for CD34+ and CD133+CD34+ cells positively correlated with FSH and inversely correlated with LH and C-peptide in the polycystic group. Cultured cells from polycystic subjects exhibited reduced adherence to fibronectin and expressed lower levels of endothelial nitric-oxide synthase and NO.
Oral glucose-induced increase in circulating numbers of CD133+ and CD133+CD34+ cells and endothelial differentiation potential of peripheral blood-derived EPCs is attenuated in insulin resistant amenorrhoeic subjects.
Document Type: Research Article
Publication date: 2012-03-17
- Human Reproduction features full-length, peer-reviewed papers reporting original research, clinical case histories, as well as opinions and debates on topical issues. Papers published cover the scientific and medical aspects of reproductive physiology and pathology, endocrinology, andrology, gonad function, gametogenesis, fertilization, embryo development, implantation, pregnancy, genetics, genetic diagnosis, oncology, infectious disease, surgery, contraception, infertility treatment, psychology, ethics and social issues. The highest scientific and editorial standard is maintained throughout the journal along with a rapid rate of publication.