Objective To establish the Sprague-Dawley rats psychological stress model and investigate the effect of the psychological stress on behavior and condylar cartilage of Sprague-Dawley rats. Methods Sprague-Dawley rats were randomly divided equally into psychological stress group, foot shock group and control group, and the foot shock group was only as sources of stimuli. The Sprague-Dawley rats psychological stress model was built, and the rats were killed at 1, 3 and 5 weeks respectively after stimulation. The behavior changes were observed by open field test,etc. The histology of condylar cartilage was observed by HE stain. Results Psychological stress model was effective in evaluating behavior changes. The pathological examination revealed structural changes of the condylar cartilage in the psychological stress group. The psychological stress groupⅡwas the most serious group with collagenous fibers disintegrated and gaps formed. Conclusion This rats model of the psychological stress shows great practicability and reproducibility. The long-term psychological stress can lead to SD rats behavior changes and temporomandibular joint condylar cartilage change.

Acetophenones ; pharmacology ; Caspase 3 ; metabolism ; Cell Proliferation ; drug effects ; Cells, Cultured ; Focal Adhesion Protein-Tyrosine Kinases ; metabolism ; Humans ; Muscle, Smooth, Vascular ; drug effects ; metabolism ; pathology ; Pulmonary Artery ; drug effects ; pathology

Glutathione S-transferase kappa 1 (GSTK1) is a key regulator for adiponectin secretion and multimerization.In Caenorhabditis elegans,GSTK1 is involved in energy production and lipid metabolism.Meanwhile,the GSTK1 level is negatively correlated with obesity.It may alleviate the endoplasmic reticulum stress-mediated downregulation of adiponectin.Moreover,a polymorphism in human GSTK1 promoter is related with insulin secretion and fat deposition.Therefore,GSTK1 might be a novel target for the treatment of insulin resistance and the relevant metabolic diseases.

Adult ; Cold Temperature ; Fingers ; Hand-Arm Vibration Syndrome ; diagnosis ; Humans ; Occupational Exposure ; adverse effects ; Skin Temperature ; Thermography ; methods ; Vibration ; adverse effects ; Young Adult

Medicine, Chinese Traditional ; Reproductive Techniques, Assisted

Objective: To develop an effective preparation method to improve the sensitivity and accuracy of real-time PCR in detection of BK virus's (BKV's) load in urine samples. Methods: A total of 24 samples documented as positive probes in primary detection were enrolled in this study. The candidate samples were prepared by 4 different approaches: unprocessed urine, BKV's DNA extracted from urine, 1:10 diluted urine, and 1:100 diluted urine; and then they were subjected to real-time PCR examination to obtain the viral load. The data obtained were analyzed by SPSS 11.0. Results: The four different preparation processes for urinary specimens had significant impact on detection results of real-time PCR. Three samples were negative in the unprocessed urine group and 66.7% of its samples had the lowest viral loads compared with the other three groups. Two samples in the 1:100 diluted urine group were negative and 79.2% of its samples had the highest viral loads, but its median load was similar to that of the 1:10 group. Viral gene was detected in all samples in the DNA extraction group and 1:10 diluted urine group, but the loss of the target gene was more severe in the DNA extraction group. Conclusion: The 1:10 diluted urine is better for real-time PCR detection of BKV's load, as it lose less viral gene and is more efficient, easy to perform and economical.

Angiotensin Receptor Antagonists ; Atrial Fibrillation ; physiopathology ; Heart Atria ; cytology ; physiopathology ; Humans ; Membrane Potentials ; Receptors, Angiotensin ; agonists

ObjectiveTo investigate sleep disorder of patients with depression and find out the regularity.Methods78 depression cases in the east-region of Shenyang were evaluated by Pittsburgh Sleep Quality Index (PSQI) questionnaire and mental health symptom checklist-90 (SCL-90). The results were contrasted with normal control group.Results63 depression cases (80%) had sleep disorder (PSQI scores≥8) and were significantly higher than normal control group. The PSQI evaluation showed that sleep quality, enter-sleep time, sleep efficiency, sleep disorder, hypnotige drugs, function of daytime and total scores of PSQI of the depression group were significantly higher than that of normal control group (P<0.05～0.01). The SCL-90 test showed that scores of somatic, obsessive, depressive, anxiety, phobia, paranoid and mental-illness, etc. and total quota of bad-sleep quality group were significantly higher than that of the fine-sleep quality group (P<0.05～0.01).ConclusionDepression patients have significantly descent in sleep quality, latter is often closely related to the mental psychotic expressiveness of somatic, obsession, depression, anxiety, phobia, etc.

Aim To further study the protective effects of acutobin on focal cerebral ischemia -reperfusion injury in rats. Methods Reversible middle cerebral artery occlusion (MCAO) models were produced by intraluminal suture technique, and reperfusion was begun 3 hours after occlusion and lasted 24 h. The extent of neurological deficits was evaluated by Longa' method; The cerebrovascular morphology was observed by electron microscope. The infarct area of brain was measured by 2,3,5-triphenyltetrazolium chloride (TTC) staining technique;The 2～4 U?kg~(-1) doses of Acutobin were administrated i.v. at the beginning of ischemia or reperfusion respectively. Results ① After 3-h occlusion and 24 h reperfusion, the neurological syndromes and the infarct area were showed, the change of cerebrovascular morphology were appeared and the ratio of TXB_2/6-Keto-PGF_(1?) in plasma was increased. ② After different doses of acutobin were administrated at different time respectively, the neurological syndromes were alleviated; the infarct areas of brain were diminished; the hurt of cerebrovascular endothelial cell was lessened and the ratios of TXB_2/6-Keto-PGF_(1?) in plasma were reduced. Conclusion Protective effects of acutobin on cerebral ischemia-reperfusion injury in rats may be related to lessening cerebrovascular injury and balancing the ratio of TXB_2/6-Keto-PGF_(1?)

Objective To investigate the gene therapy of hypoparathyroidism (HPT) with hemopoietic stem cell s(HSCs) integrated with parathyroid hormone (PTH) gene.Methods Human PTH gene was amplified by polymerase chain reaction from pcDNA 3.1 -PTH templates and inserted into murine stem cell virus (MSCV) vectors. The plasmids recombinated with PTH gene were transfected into PA317 packaging cells and screened for positive clones with Geneticin. The condensed recombinant retroviruses were obtained and used to infect HSCs coming from umbilical cord blood. The infected HSCs were injected into the mice suffering from HPT. The change of symptoms and serum level of PTH and calcium in each group of mice was observed.Results Human PTH gene was proved to be inserted into MSCV vectors and the titres were up to 2?10 7 colony forming unit (CFU)/ml in condensed retroviral solution. The secretion of PTH reached 15 ng per 10 6 cells per 48 h. The wild type viruses were not detected by PCR amplification. The mice suffering from HPT recovered quickly and the serum level of calcium and PTH remained normal for about 3 months after the HSCs recombinated with PTH gene were injected into them. In the groups of mice subject to the injection of the recombinant retroviruses containing PTH gene, the serum level of PTH and Calcium was significantly increased in a short time, and then declined slowly. And the mice took on the manifestation of hypoparathyroidism again. The mice only subject to the implantation of HSCs were all dead within 20 days.Conclusion A long term therapeutic effect could be obtained by infusing the HSCs which were integrated with PTH gene into the mice suffered from hypoparathyroidism.