ABSTRACT
Objective:To investigate the effect of early enteral nutrition on ventilator-associated pneumonia in patients with severe cerebrovascular disease,and to evaluate nutritional status,intestinal nutrition tolerance,pH value of gastric juice and incidence of gastrointestinal bleeding.Methods:This study was a prospective study.The subjects were 72 patients with severe cerebrovascular disease in the intensive care unit of Neurology Department of our hospital from March 2014 to May 2017.All patients were treated with nasal feeding and mechanical ventilation.Among them,36 patients received enteral nutrition support treatment within 24 hours (early group),and 36 patients received enteral nutrition support treatment after 24 hours (control group).The two groups were compared with the incidence of ventilator-associated pneumonia,weaning success rate,complications of enteral nutrition rate,and gastrointestinal bleeding within 7 days,serum albumin and serum prealbumin level after 7 days,survival rate after 28 days.We also analyzed the changes in pH of the gastric juice at admission,1 day,3 days,7 days,and 14 days after treatments.Results:In the early group,the incidence of ventilator-associated pneumonia,gastrointestinal bleeding,complications of enteral nutrition,were lower than the control group.The serum level of albumin and prealbumin,the rate of successful weaning and 28 day survival rate were higher than the control group.After the early enteral nutrition,the pH value of gastric juice increased significantly.Conclusion:Early application of enteral nutrition support therapy can improve the nutritional status of patients,reduce the incidence of ventilatorassociated pneumonia,improve the success rate of weaning,reduce the fatality rate and improve the prognosis of patients.Early enteral nutrition support treatment can also increase pH value of gastric juice and reduce the incidence of gastrointestinal complication and gastrointestinal bleeding.
ABSTRACT
Spermatogonial stem cells (SSCs) are the postnatal mitotic male germ cells that undergo self-renewing and differentiate into haploid sperm through spermatogenesis throughout life time. However, some recent interesting studies indicate that pluripotent cells can be derived from SSCs in culture. Thus, it seems that SSCs are a great resource of pluripotent cells for regenerative medicine, especially to meet the demand of immuno-rejection free pluripotent cells derived from patients themselves. This article aims to introduce the current understanding and advantages of the pluripotent SSCs in regenerative medicine.
Subject(s)
Animals , Humans , Male , Cell Culture Techniques , Cell Differentiation , Cells, Cultured , Pluripotent Stem Cells , Cell Biology , Spermatogenesis , Spermatogonia , Cell BiologyABSTRACT
<p><b>AIM</b>To investigate whether estrogen stimulates the proliferation of spermatogonia or induces spermatogenesis in cryptorchid mice.</p><p><b>METHODS</b>Mice were surgically rendered cryptorchid, then treated with different doses of 17beta-estradiol (E2) s.c. once a day. Mice were killed at sexual maturity (45 days of age), and histological analysis and immunofluorescence were performed. Serum follicle stimulating hormone (FSH), estradiol, testosterone and luteinizing hormone (LH) were measured.</p><p><b>RESULTS</b>Low doses of E2 had no notable effect on spermatogonia, but at higher doses, E2 stimulated the proliferation of spermatogonia.</p><p><b>CONCLUSION</b>E2 has a dose-related mitogenic effect on spermatogonia.</p>