Adult ; Female ; Humans ; Laryngeal Neoplasms ; complications ; Neurilemmoma ; complications ; Neurofibromatosis 2 ; complications

To evaluate the regulating effect of Buyang Huanwu decoction and its simple prescription (Naojian tablet) on CDK4/Cyclin D1 expression in hippocampus tissues of rats with cerebral ischemia, SD rats were divided into the sham-operation group, the model group, the Buyang Huanwu decoction group (ig, 3.15 g · kg⁻¹) and the simple prescription group (ig, 2.41 g · kg⁻¹). Each group was further divided into five subgroups based on time points after the administration, i. e. 1 d, 3 d, 7 d, 14 d and 28 d, respectively. CDK4/Cyclin D1 expressions of the group at different time points were examined by using immunohistochemistry and real-time qPCR. According to the results, the cerebral ischemia model group showed higher CDK4/Cyclin D1 expression than the sham-operation groups (P < 0.05), suggesting that the cell cycle signal pathway would be activated by the cerebral ischemic injury. Both Buyang Huanwu decoction and simple prescription groups showed significantly lower cyclin expression than the model group at 3 d, 7 d, 14 d, 28 d (P < 0.05), indicating both Buyang Huanwu decoction and its simple prescription could play the neuroprotective effect through the cell cycle signal pathway.
Animals ; Brain Ischemia ; drug therapy ; genetics ; metabolism ; physiopathology ; Cell Cycle ; drug effects ; Cyclin D1 ; genetics ; metabolism ; Cyclin-Dependent Kinase 4 ; genetics ; metabolism ; Drugs, Chinese Herbal ; administration & dosage ; Humans ; Male ; Rats ; Rats, Sprague-Dawley

The 1.23 kb DNA fragment encoding the early protein EP0 of pseudorabies virus (PRV) Ea strain was amplified by PCR technique and cloned into pBluescriptII sk+.Three sequencing plasmids containing the partial fragment of the EP0 gene were constructed and the sequences were obtained by Sanger's sequencing technique. Compared with PRV InFh strain, there were multipile site-mutations and a deleted-mutation in the EP0 gene of PRV strain Ea，and the diversity of amino acid residues also existed.Then, the EP0 gene was inserted into an expression vector, pET-28a, fused into the downstream of the 6ΧHis-Tag in frame, to yield the expression plasmid pETEP0. After induction by IPTG, a high expression of fusion protein was obtained, SDS-PAGE analysis and Western blotting showed that the fusion protein was 62kD and the protein was specific to antisera against PRV Ea strain. This indicated that the EP0 gene be expressed in BL21(DE3) and the expression products have immuno-genicity.

Objective To predict the CTL epitopes of Tat exon 1 region in HIV-1 CRF07_BC strains, which were prevailing in China. Methods Total of 236 plasma samples were from the 3rd National HIV Molecular Epidemic Survey (NMES3). All the subjects were infected with HIV-1 CRF07_BC viruses. The tat exon 1 region was amplified by reverse transcription reaction and nested polymerase chain reaction (nested-PCR), then the PCR products were sequenced. The distribution of CTL epitopes of this region were predicted by on-line software BIMAS HLA Peptide Binding Predictions and statistics software. Results To-tal of 236 CRF07_BC strains were from 16 provinces, mainly in intravenous drug asers(58.9%)and then sex(25.0%). It was showed that there were 12 CTL epitopes of 236 Tat exon 1 region of CRF07_BC strains mainly located in proline-rich region, cysteine-rich region and core-region. Those epitopes were banded by 5 HLA presenting molecules in genotype(A * 2501 ,A * 2902, B * 15,B * 5301 and Cw * 1203) and 6 HLA presenting molecules in serotype (B53, B58 ,B57 ,A3 ,A68 and Cw12). The frequency of single amino acid substitution was more than 50% in 7 CTL epitopes. Conclusion The CTL epitopes in Tat exon 1 of CRF07 _BC strains were located in different functional regions, and there were some amino acid variations in them.

BACKGROUND:Partial pressure of end-tidal carbon dioxide (PETCO2) has been used to monitor the effectiveness of precordial compression (PC) and regarded as a prognostic value of outcomes in cardiopulmonary resuscitation (CPR). This study was to investigate changes of PETCO2 during CPR in rats with ventricular fibrillation (VF) versus asphyxial cardiac arrest. METHODS:Sixty-two male Sprague-Dawley (SD) rats were randomly divided into an asphyxial group (n=32) and a VF group (n=30). PETCO2 was measured during CPR from a 6-minute period of VF or asphyxial cardiac arrest. RESULTS:The initial values of PETCO2 immediately after PC in the VF group were significantly lower than those in the asphyxial group (12.8±4.87 mmHg vs. 49.2±8.13 mmHg,P=0.000). In the VF group, the values of PETCO2 after 6 minutes of PC were significantly higher in rats with return of spontaneous circulation (ROSC), compared with those in rats without ROSC (16.5±3.07 mmHg vs. 13.2±2.62 mmHg,P=0.004). In the asphyxial group, the values of PETCO2 after 2 minutes of PC in rats with ROSC were significantly higher than those in rats without ROSC (20.8±3.24 mmHg vs. 13.9±1.50 mmHg,P=0.000). Receiver operator characteristic (ROC) curves of PETCO2 showed significant sensitivity and specificity for predicting ROSC in VF versus asphyxial cardiac arrest. CONCLUSIONS:The initial values of PETCO2 immediately after CPR may be helpful in differentiating the causes of cardiac arrest. Changes of PETCO2 during CPR can predict outcomes of CPR.

AIMTo study the effect of curcumin on pulmonary arterial pressure and type I collagen of pulmonary arterioles in pulmonary hypertensive rats induced by chronic hypoxia and hypercapnia.

METHODSThirty six rats were randomly divided into three groups: normal control group (NC), hypoxic hypercapnic group (HH) and hypoxic hypercapnia + curcumin group (HC). Collagen I in pulmonary arterioles was observed by the technique of immunohistochemistry.

RESULTS(1) The findings from hemodynamics showed that the mPAP in group HH was significantly higher than that in group NC and HC. Differences of mCAP among groups were not significant (P > 0.05). (2) Light microscopy showed the value of WA/TA (vessel wall area/total area), SMC (the density of medial smooth muscle cells) and thickness of pulmonary arterial media smooth cell layer(PAMT) were significantly higher in group HH than group NC (P < 0.01) and group HC (P < 0.01). (3) Electron microscopy showed that structure of the endothelial cells in pulmonary arterioles in group HC was near to normal, and the proliferation of medial smooth muscle cells and collagen fibers in adventitia was much lighter than those of group HH. (4) Expression of collagen I in pulmonary arterioles was significantly higher in group HH than group NC (P < 0.01) and group HC (P < 0.01).

CONCLUSIONCurcumin can decrease pulmonary arterial pressure, improve pulmonary vessel remodeling and inhibit the deposition of collagen I in pulmonary arterioles.

Animals ; Arterioles ; drug effects ; metabolism ; Collagen Type I ; metabolism ; Curcumin ; pharmacology ; Extracellular Matrix ; metabolism ; Hypercapnia ; metabolism ; physiopathology ; Hypertension, Pulmonary ; metabolism ; physiopathology ; Hypoxia ; metabolism ; physiopathology ; Male ; Pulmonary Artery ; drug effects ; metabolism ; Rats ; Rats, Sprague-Dawley

OBJECTIVETo study the correlation between morphological variation and gentiopicroside content in cultivated Gentiana manshurica roots and to investigate the feasibility of breeding new varieties of high effective constituent content.

METHODGentiopicroside was determined in 5 morphological types of cultivated G. manshurica roots by HPLC, which are normal (or wild) type, white-flowered type, thick-rooted type, broad-leaved type I and broad-leaved type II.

RESULTAmong different types gentiopicroside content is the highest in the roots of thick-rooted type, the contents decrease as following order: normal type, broad-leaved type I white-flowered type and broad-leaved type II, and the gentiopicroside contents in the same type root system are a positive correlation with root ages, as 3-years-age roots > 2-years-age roots > 1-year-age varied with roots.

CONCLUSIONThe contents of effective constituent vary with the morphological variation in cultivated G. manshurica. It is feasible to breed a new variety with high effective constituent with the morphological character as a selecting index.

Genetic Variation ; Gentiana ; anatomy & histology ; chemistry ; classification ; Glucosides ; analysis ; Iridoid Glucosides ; Iridoids ; analysis ; Plant Roots ; anatomy & histology ; chemistry ; Plants, Medicinal ; anatomy & histology ; chemistry ; classification ; Pyrans ; analysis ; Species Specificity

In order to make clear the packing mechanism of the BmNPV polyhedra, a polyhedrin gene negative recombinant baculovirus, vBmBac(polh-)-5B-EGFP, expressing EGFP was constructed, and used to infect BmN cells jointly with wild-type BmNPV. Fluorescent microscopic observation demonstrated that EGFP and polyhedrin were expressed simultaneously, and the EGFP expression and polyhedra formation occurred in most of the jointly infected cells. Analysis of the purified polyhedra from jointly infected BmN cells showed that the foreign proteins were present in the polyhedra. The results indicated that BmNPV polyhedrin could incorporate proteins other than viral proteins into the polyhedra. It implies that a nonspecific recognition mechanism exists in the embedment of BmNPV polyhedra.
Animals ; Bombyx ; Gene Expression ; Green Fluorescent Proteins ; genetics ; metabolism ; Nucleopolyhedrovirus ; genetics ; physiology ; Viral Structural Proteins ; genetics ; metabolism ; Virus Assembly

Objective To explore the effect of hypertension on the life quality in elderly.Methods A cohort of 1847 elderly in community in Beijing was recruited.Blood pressur,body structural and mental heath,cognition, activity and life satisfaction were evaluated by physical examination,CES-D scale,MMSE,and ADL,IADL scale.Results The life quality of the elderly hypertension was worse than those of normotensive;the morbidi- ties of chronic disease related to hypertension were higher and the cognitive ability worse with the duration of hy- pertension.The prevalence of depression was higher and the vitality was decreased as the rising of blood pres- sure.Conclusion Prevention and control hypertension improve life quality in elderly hypertension.

Objective To explore the depression status of hypertension and analyze the associated factors in the elderly population in a community of Beijing.Methods This cohort of 1064 elderly people in the community were screened with Centerfor Epidemiology Scale(CES-D). Results Those who lived in rural(21.6% vs city 7.3%),illiterate(19.9% vs literate 11.2%),mateless(19.7% vs mate 12.4%),lower income(21.9% vs high in- come 9.8%),life accidents(23.2% vs without life accidents 8.6%),sleep disorder(31.0% vs sleep good 8.7%) and lower living abilities(26.7% vs high living ability 9.0%)had higher incidence of depression(all P