Objective To evaluate the effect of colquhounia root tablet on the expression of tight junction proteins claudin-5 and ZO-1 in the renal tissues of rats with acute lung injury (ALI).Methods Twenty-four healthy male Sprague-Dawley rats,weighing 250-300 g,were randomly divided into 3 groups (n =8 each) using a random number table:control group (group C),ALI group;and colquhounia root tablet group (group H).Oleic acid 0.04 ml/kg was injected into the trail vein to establish the model of ALI.In group H,colquhounia root tablet 600 mg · kg-1 · d-1 was instilled into the stomach of each rat for 10 consecutive days,and oleic acid was injected at 1 h after instillation on 10th day.Blood samples were collected from the abdominal aorta at 6 h after injection of oleic acid for determination of plasma creatine (Cr) and blood urine nitrogen (BUN) concentrations.The animals were then sacrificed.The lungs were removed for determination of wet/dry lung weight ratio (W/D ratio),and for examination of the pathological changes.The kidneys were removed for determination of the expression of claudin-5 and ZO-1 (by immunohischemistry assay and Western blot) and for examination of the pathological changes.The damage to the renal tubules was scored.Results Compared with group C,W/D ratio,plasma Cr and BUN concentrations,and renal tubular damage score were significantly increased,and the expression of claudin-5 and ZO-1 was down-regulated in group ALI (P＜0.01).Compared with group ALI,W/D ratio,plasma Cr and BUN concentrations,and renal tubular damage score were significantly decreased,and the expression of claudin-5 and ZO-1 was up-regulated in group H (P＜0.01).The pathological changes of lungs and kidneys were significantly attenuated in group H as compared with group ALI.Conclusion Colquhounia root tablet can attenuate kidney injury through up-regulating the expression of tight junction proteins claudin-5 and ZO-1 in the renal tissues of rats with ALI.

Cardiology ; Humans ; Myocardial Ischemia ; Physicians ; Stroke

Adult ; Electromyography ; Gasoline ; poisoning ; Humans ; Male ; Poisoning ; physiopathology ; psychology ; Young Adult

Accidents, Occupational ; Adolescent ; Adult ; Humans ; Lead Poisoning ; Male ; Young Adult

Cell Differentiation ; drug effects ; Cell Separation ; Endothelial Cells ; cytology ; Fibronectins ; pharmacology ; Humans ; Leukocytes, Mononuclear ; cytology ; Stem Cells ; cytology

Objective To investigate the effects of traditional Chinese medicine colquhounia root tablet on the expression of tight junction protein claudin-2 and ZO-1 in bronchial epithelium tissues of rats with acute lung injury (ALI), and to study the mechanism of protective effect of colquhounia root tablet on ALI. Methods Twenty-four healthy male Sprague-Dawley (SD) rats were randomly divided into control group, ALI group and colquhounia root tablet pretreatment group, with 8 rats in each group. The model of ALI was reproduced by intravenous injection of oleic acid 0.04 mL/kg, and the rats in cont rol group were given the same amount of normal saline (NS) instead. The rats in colquhounia root tablet pretreatment group were intragastric administrated with colquhounia root tablet of 600 mg·kg-1·d-1 (2 mL) for 10 days before model reproduction, and the rats in control group and ALI group were given the same amount of NS. At 4 hours after model reproduction, the blood was drawn from abdominal aorta, and bronchoalveolar lavage fluid (BALF) was collected for determination of protein content in plasma and BALF, and the lung permeability index (LPI) was calculated. The rats were sacrificed to collect lung tissues for determination of lung wet/dry weight ratio (W/D), the changes in pathology of lung tissue were observed after hematoxylin and eosin (HE) staining with light microscope, and lung injury score (LIS) was evaluated. The immunohistochemic al staining was used to detect the expression and localization of claudin-2 and ZO-1 in bronchial epithelium tissues. The protein expressions of claudin-2 and ZO-1 in bronchial epithelium tissues were determined by Western Blot. Results Compared with control group, the lung injury in ALI group was more obvious including cellular edema and structural disorder of intercellular connection by optical microscope, and LIS, W/D ratio, and LPI were significantly increased (LIS: 3.81±0.42 vs. 0.40±0.08, W/D: 7.68±0.64 vs. 4.44±0.39, LPI: 0.89±0.15 vs. 0.38±0.05, all P < 0.01). Claudin-2 and ZO-1 were mainly expressed in the bronchial epithelium cell, and the expression degrees were significantly weakened in ALI group as compared with control group. It was shown by Western Blot results that compared with control group, the protein expressions of claudin-2 and ZO-1 were significantly down-regulated in ALI group [claudin-2 protein (gray value): 0.43±0.31 vs. 2.16±1.33, ZO-1 protein (gray value): 1.25±0.41 vs. 2.82±0.76, both P < 0.01]. Compared with ALI group, colquhounia root pretreatment could effectively diminish the degree of ALI (LIS: 1.22±0.39 vs. 3.81±0.42, W/D: 4.62±0.84 vs. 7.68±0.64, LPI: 0.46±0.07 vs. 0.89±0.15, all P < 0.01), and the protein expressions of claudin-2 and ZO-1 were significantly up-regulated [claudin-2 protein (gray value): 2.98±0.91 vs. 0.43±0.31, ZO-1 protein (gray value): 2.35±0.51 vs. 1.25±0.41, both P < 0.01]. Conclusion Administration of colquhounia root table could attenuate lung injury induced by oleic acid with improving epithelial barrier function via up-regulate the expression claudin-2 and ZO-1, which play a protective effect on the lung of rats with ALI.

Acupuncture Therapy ; Altitude ; Animals ; Brain Edema ; prevention & control ; Female ; Hypoxia, Brain ; therapy ; Male ; Neurons ; metabolism ; Rats ; Rats, Sprague-Dawley ; Receptor, Adenosine A1 ; metabolism

OBJECTIVETo compare the hybrid between species of Dendrobium huoshanense and its parents on growing, physiologic indexes and content of medicinal components, and provide theoretical basis for species quality improvement.

METHODThe chlorophyll content, the photosynthesis rate, the polysaccharides content and the alkaloids content were measured by anhydrous ethanol method, Cl-310 photosynthesis determination system, colorimetry of concentrated sulphuric acid-phenol and acid dyes colorimetry respectively.

RESULTThe growth of hybrid was close to D. moniliforme, and apparently higher than D. huoshanense. The chlorophyll content and the photosynthesis rate of one-year-hybrid were markedly higher than its parents. The content of polysaccharides and alkaloids in two-year-stem and three-year-stem of hybrid were close to that of D. huoshanense.

CONCLUSIONThe hybrid integrates superiority of parents on growth and accumulation of medicinal components opens vast vistas for development and utilization.

Alkaloids ; analysis ; Chlorophyll ; analysis ; Dendrobium ; chemistry ; classification ; genetics ; growth & development ; Hybridization, Genetic ; Photosynthesis ; Plants, Medicinal ; chemistry ; classification ; genetics ; growth & development ; Polysaccharides ; analysis

Antihypertensive Agents ; therapeutic use ; Humans ; Hypertension ; drug therapy ; Randomized Controlled Trials as Topic

Objective To explore the changes of cardiac muscle enzymogram and heart function before and after transactheter closure of ventricular septal defect(VSD).Methods The serum levels of cardiac troponin(cTnI),carcatine kinase(CK),lactie dehydrogenase(LDH),aspartate aminotransferase(AST)and the left ventricular ejection fraction(LVEF)were detected by two-dimensional echocardiography,and the change before and after intervention was analyzed.Results The serum level of cTnI in VSD patients after treatment was markedly higher than that before intervention[(0.29?0.17)?g/L vs(0.02?0.01)?g/L,t=9.0 P0.05).Conclusion Catheterization to treat VSD may have influence on enzymogram and the heart function,which may be related to the minor myocardial damage during the operation.