Adolescent ; Adult ; Female ; Humans ; Male ; Methanol ; poisoning ; Occupational Diseases ; chemically induced ; diagnosis ; therapy ; Poisoning ; diagnosis ; therapy

Objective:To study the role of phospholipase A 2 in the pathomechanism of low back and leg pain. Methods:Phospholipase A 2 was injected into rats′ cavum epidurale, then the pathologic changes of cauda equina was viewed under light microscopy and electronic microscopy. The substance P(SP) in the dorsal root ganglia(DRG) and spinal cord was determined by immunohistochemistry. Results:After phospholipase A 2 injection, the nerve fibers of cauda equina displayed significant degeneration and demyelination. In L 4 to L 6 segment, the number and area of SP positive neurons in the DRG increased significantly. The relative density of positive nerve endings in the dorsal horn of spinal cord was also increased significantly. There were significant difference compared to the normal solution control group by statistic analysis. Conclusion:Phospholipase A 2 is a nocuous substance to cauda equina. It may play an important role in the pathomechanisms of low back and leg pain related to lumbar disc herniation.

The role of arginine vasopressin ( AVP) played in proliferation and differentiation of mouse primary osteoblast and its mechanism was investigated. 100 nmol/ L AVP was added into the medium containing primary mouse osteoblast: (1) After being cultured for 72 h, the proliferation of the cells was counted with a cell counter. (2) The media of cultured cells on 2,4,6,8,10 days were harvested and tested for the secreted ALP concentration by osteoblasts, and the cells were lysed in order to test the ALP concentration in cytosol. (3) The alizarin red staining was employed to detect the effect of AVP on calcium nodules formation on 8 th and 20 th days. (4) The osteoblast cells were incubated with AVP for 20 min, and then were lysed. Radioimmune assay was applied to test the change of cAMP in cytosol. These results showed that, compared to negative group, 100 nmol/ L AVP significantly promoted the proliferation of primary mouse osteoblast ( P<0. 01). ALP secretion was increased remarkably ( P <0. 01), and the number and area of calcium nodules were increased considerably(P<0. 01). The intracellular cAMP was increased after incubating cells with AVP for 20min ( P<0. 01). These results suggest that AVP may promote proliferation and differentiation of mouse primary osteoblasts by cAMP signal pathway.

Objective To report a familial dentinogenesis imperfecta type Ⅱ (DGI type Ⅱ) with a novel splicing mutation in DSPP (dentin sialophosphoprotein) gene.Methods Based on the result of linkage analysis performed previously to map the candidate gene DSPP in the family, the promoter,the first four exons and exon-intron boundaries of DSPP were directly sequenced for the members of the DGI type Ⅱ family. Denaturing high performance liquid chromatography (DHPLC) analysis was performed to confirm the results of sequencing.Results A novel splicing mutation of 23 bp deletion in intron 2 of DSPP gene was identified by DNA sequence analysis. The mutation changed acceptor site sequence from CAG to AAG, and might result in functional abolition of possible branch point site in intron 2. DHPLC result was consistent with that of sequencing. The mutation may be identified in all affected individuals, but not found in normal members of the family and 50 controls.Conclusion These results suggest the deleted mutation of DSPP gene causes DGI type Ⅱ in the family. The mutation has not been reported before.

OBJECTIVETo observe the role of interleukin (IL) 21 alone, IL12 alone, and IL21 plus IL12 for inducing the antitumor activity of peripheral blood mononuclear cells (PBMCs) in patients with endometrial cancer.

METHODSPBMCs were isolated from peripheral blood in patients with endometrial cancer in vitro, and kept the culture with low-level IL2. IL2-stimulated PBMCs were cocultured under different conditions (with anti-IL21 antibody, IL21 alone, IL12 alone, or IL21 plus IL12) for 72 h. The cytotoxicity of PBMCs was then examined by lactate dehydrogenase(LDH) released assay. CD4(+) CD25(+) FOXP3(+) regulatory (Treg) cell and CD4(+) IL17A(+) T-helper (Th17) cell proportion were determined with flow cytometry. Cell proliferation and apoptosis were measured by cell counting kit-8(CCK-8)assay and flow cytometry, respectively.

RESULTSIn comparison to control group, both IL21 and IL12 significantly enhanced the cytotoxicity of PBMCs. The IL21 plus IL12 group had superior effect to IL21 alone and IL12 alone. IL21 and IL12 significantly decreased the percentages of Treg cells and the rate of PBMCs apoptosis. IL21 or IL12 had no significant effect on the differentiation of Th17 cells and the proliferation of PBMCs.

CONCLUSIONSIL21 and IL12 can enhance the cytotoxicity of PBMCs in patients with endometrial cancer, which can be further strengthened with treatment of IL21 plus IL12. Such effects may be achieved by inhibiting the differentiation of Treg cells and the apoptosis of PBMCs, but not by the differentiation of Th17 cell.

Adult ; Aged ; Apoptosis ; drug effects ; Cell Proliferation ; drug effects ; Cells, Cultured ; Endometrial Neoplasms ; immunology ; pathology ; Female ; Humans ; Interleukin-12 ; pharmacology ; Interleukins ; pharmacology ; Leukocytes, Mononuclear ; drug effects ; immunology ; pathology ; Middle Aged ; T-Lymphocytes, Regulatory ; immunology

Objective To explore the application effects of health education pathway in pulmonary surgeries on the recovery of lung function after lung operation.Methods Standard education pathway was established according to the needs of health education for peri-operative pulmonary patients.Ninety cases of patients with lung surgeries from November 2009 to September 2011 were chosen and divided into the pathway group with 46 cases and the control group with 44 cases by random number tables.The control group received conventional health education while the pathway group received health education pathway.Two groups' health education knowledge level,compliance of active exercise,postoperative complication,time of drawing drainage tube and lung function recovery was compared.Results There were statistically significant differences between two groups in the health education mastering degree,compliance of active exercise and the incidence of postoperative complications (x2 =5.7,10.7,9.7,respectively ; P ＜ 0.05).Every index of lung function recovery was better in the pathway group than the control group,and the difference was statistically significant (P ＜ 0.05).The time of drawing drainage tube was also shortened in the pathway group than in the control group [(3.0 ± 1.67) d vs (6.0 ± 2.82) d],and the difference was statistically significant (t =4.613,P ＜ 0.01).Conclusions Application of health education pathway for peri-operative pulmonary patients can increase their health education knowledge and skills,improve respiratory function training compliance and effects,strengthen their lung function,pull out the chest tube in shorter time,and reduce postoperative complications.

Child ; Chromosomes, Human, Pair 4 ; Humans ; Karyotyping ; Male ; Phenotype ; Trisomy

OBJECTIVE: To establish more efficient method to isolate of dermal papilla cells (DPCs) from back skin of SD rats, and then to study the growth ability and characteristics of SD rat dermal papilla cells in vitro. METHOD: DPCs were separated from back skin of SD rats according to the modified method of two-step enzymatic digestion. The DPCs morphological observation under inverted microscope, the growth kinetics by cells number, the cell cycle analysis by flow cytometry analysis and determine the surface epitopes by immunohistochemical staining and flow cytometry analysis. RESULT: Cultured DPCs were similar to fibroblasts in appearance, but generally and periodically exhibited an aggregative growth pattern. The growth kinetics showed that the number of DPCs presented progressive increase in a logarithm mode in the first 3 days and entered into plateau after 9 days, P1, P3, P5 multiplication time was 68 h, 52 h and 36 h, respectively. The flow cytometrical analysis showed that DPCs of P1, P3, P5 G0/G1 stage were (90.21 +/- 5.13)%, (81.23 +/- 1.85)% and (75.16 +/- 5.32)%, respectively. G0/G1 stage cells became less following passage subculture and elongation of culture time, but most of the DPCs stayed resting stage still. The cultivated dermal papilla cells expression of alpha-smooth muscle and CD44 on cell surface was positive, CK and CD34 were negative. CONCLUSION DPCs can be separated by the modified method of two-step enzymatic digestion successfully. The cultivated dermal papilla cells vitro show the feature of stem cells and has important potentially as a new seed cell source for cell engineering.
Animals ; Back ; Cell Cycle ; Cell Separation ; methods ; Cells, Cultured ; Dermis ; cytology ; Hair Follicle ; cytology ; Male ; Primary Cell Culture ; methods ; Rats ; Rats, Sprague-Dawley ; Skin ; cytology

Myocardial infarction refers to severe coronary artery stenosis, which leads to continuous and complete occlusion of coronary artery and myocardial necrosis. Coronary artery stenosis (>50%) or occlusion can be seen in 90% of patients undergoing coronary angiography, but 10% of patients have no obvious stenosis, that is, non obstructive myocardial infarction (MINOCA). The incidence rate of MINOCA was about 6%, showing an upward trend year by year, with an average age of 55 years, of which 40% of women. Its etiology is complex, the onset is urgent, and the clinical manifestations are complex and changeable. The incidence of major adverse cardiovascular events (MACE) is very high, and the mortality rate within one year is as high as 3.5%. There is no unified diagnosis and treatment plan at present. In this paper, the etiology, diagnosis and treatment of MINOCA were reviewed.

Objective:To study the application of the best evidence of dysphagia recognition in acute stroke patients.Methods:The study was performed guided by JBI evidence-based continuous quality improvement pattern, including evidence acquisition, baseline audit, evidence implementation and re-audit. Data were collected by using field observation, questionnaire survey and review of nursing records. 80 patients and 18 nurses were recruited in the study. Barriers to evidence implementation and available solutions were analyzed. Before and after the application of evidence, the compliance of audit criterion, screening rate of swallowing disorder, screening accuracy, screening record rate and knowledge of nurses were compared.Results:Before and after the implementation of evidence, the compliance of all audit criterion was 0-33.3% and 95.0%-100.0%, and had a significant difference ( P<0.05). The dysphagia recognition knowledge score was improved from 40-80(60.56±10.69) to 60-100 (82.78±10.18) and had a significant difference ( t value was -6.39, P<0.05). The screening rate for dysphagia increased from 7.5% to 95.0%, with statistically significant difference ( χ2 value was 119.10, P<0.05). The screening accuracy was 100%, and the screening record rate was 97.4%, only 4 of the 24 patients at risk of dysphagia developed pulmonary infection. Conclusion:The application of the best evidence of dysphagia recognition in acute stroke patients can improve the nurses′ ability of dysphagia screening and improve nursing practice in dysphagia management.