Animals ; Arterioles ; cytology ; growth & development ; Cell Culture Techniques ; methods ; Cell Proliferation ; Cells, Cultured ; Lung ; anatomy & histology ; Myocytes, Smooth Muscle ; cytology ; physiology ; Rats ; Rats, Sprague-Dawley

OBJECTIVETo observe protective effects of Schisandra extract (SE) on embryotoxicity and reproductive toxicity of early pregnant rats exposed to Benzo[a]pyrene (Bap).

METHODSPregnant rat model was prepared using periodic screening cage method. Totally 50 female pregnant SD rats were divided into five groups by randomized block design according to the weight, i.e., the BaP model group, the low dose SE group, the middle dose SE group, the high dose SE group, the normal control group, 10 rats in each group. Rats in the BaP model group were administered with BaP at a daily dose of 2 mg/kg by gastrogavage. Rats in low, middle, and high dose SE groups were administered by gastrogavage with BaP (at a daily dose of 2 mg/kg) plus SE at a daily dose of 40, 200, and 1 000 mg/kg, respectively. Equal volume of olive oil was administered to rats in the normal control group by gastrogavage. All medication was performed for 8 successive days. Changes of rat body weight in each period were observed. The uterus embryonic total quality and ovary quality were measured, and organ index calculated. The number of corpus luteum, the number of embryo implantation, and the number of absorbed embryo were statistically calculated respectively. The implantation rate and the absorbed embryos rate were calculated. Serum levels of human chorionic gonadotrophin β (β-HCG) and progesterone (PROG) were detected by ELISA.

RESULTSCompared with the normal control group, the weight of 9-day pregnant rats, the number of embryo implantation, the uterus embryonic total index, ovary index, serum levels of β-HCG and PROG all decreased in the Bap model group with significant difference (P < 0.05, P < 0.01). Compared with the Bap model group, body weight, the uterus embryonic total index, and the PROG level increased in 3 dose SE groups (P < 0.05, P < 0.01). Ovary index and serum β-HCG increased in middle and high dose SE groups (P < 0.05, P < 0.01). The number of implantation obviously increased in the high dose SE groups (P < 0.01).

CONCLUSIONSE could reduce the embryotoxicity and reproductive toxicity of early pregnant rats exposed to Benzo[a]pyrene.

Animals ; Benzo(a)pyrene ; toxicity ; Chorionic Gonadotropin ; blood ; Embryo Implantation ; drug effects ; Female ; Ovary ; drug effects ; Plant Extracts ; pharmacology ; Pregnancy ; Progesterone ; blood ; Random Allocation ; Rats ; Rats, Sprague-Dawley ; Reproduction ; drug effects ; Schisandra ; chemistry ; Uterus ; drug effects

Carcinosarcoma ; metabolism ; pathology ; radiotherapy ; surgery ; Follow-Up Studies ; Humans ; Keratins ; metabolism ; Ki-67 Antigen ; metabolism ; Male ; Middle Aged ; Mucin-1 ; metabolism ; Parotid Gland ; pathology ; surgery ; Parotid Neoplasms ; metabolism ; pathology ; radiotherapy ; surgery ; Radiotherapy, Adjuvant ; Vimentin ; metabolism

Follow-Up Studies ; Forearm ; Humans ; Infant, Newborn ; Male ; Melanoma ; congenital ; surgery ; Skin Neoplasms ; congenital ; surgery

OBJECTIVETo investigate the effects of endothelin-1 (ET-1) overexpression on apoptosis of the rat pulmonary arterial microvascular smooth muscle cells (RPMC) in vitro.

METHODSPrimary RPMC obtained from the pulmonary artery and lung microvasculature were identified by immunofluorescence staining and electron microscope technique. The RPMC was transient transfected with the pMEXneo-ET1 and pCDNA5-FRT-TO-ET1-3'UTR plasmids as well as the empty vector respectively via lipofectamine. Flow cytometry was used to assess the cell cycle and apoptosis of RPMC. Akt and Caspase-3 expressions were detected by Western blot and real time RT-PCR.

RESULTSThe mRNA of ET(A) expression was significantly higher than that of ET(B) receptor in primary RPMC. Flow cytometry analysis revealed significantly reduced apoptosis in ET-1 transfected RPMC compared to that in vehicle transfected RPMC. Overexpression of ET-1 in RPMC also significantly increased the phosphorylation of Akt and reduced the cleaved Caspase-3 expression.

CONCLUSIONSOverexpression of the ET-1 inhibited RPMC apoptosis and activated Akt/PKB-Caspase-3 signaling pathway, which might be responsible for ET-1 induced the pulmonary microvascular arteries remodeling.

Animals ; Apoptosis ; Arteries ; metabolism ; Cells, Cultured ; Endothelin-1 ; metabolism ; Female ; Male ; Muscle, Smooth, Vascular ; cytology ; metabolism ; Proto-Oncogene Proteins c-akt ; metabolism ; Pulmonary Artery ; metabolism ; Rats ; Rats, Sprague-Dawley ; Signal Transduction

Coronary artery disease (CAD) is one of the leading causes of death. Safflower attracts great attention owing to its anti-ischemia/reperfusion injury effect. Ninety-three patients with CAD were included and randomized into safflower treatment group, PCI group and control group. Low-dose dobutamine stress echocardiography (DSE) was performed to measure end-systolic volume (ESV), end-diastolic volume (EDV), left ventricular ejection fraction (LVEF) and wall motion score index (WMSI) to determine the recovery of hibernating myocardium and cardiac function in all patients before treatment and after 3-month follow-up. The study was to investigate the effects of safflower on hibernating myocardial revascularization and cardiac function. It was found that LVEF was significantly improved, while the ESV and WMSI were significantly reduced after 2-week treatment in safflower and PCI treatment groups. No significant differences were found between safflower and PCI treatment groups in ESV, EDV, WMSI and LVEF after treatment Safflower injection effectively improved hibernating myocardial function.
Aged ; Carthamus tinctorius ; chemistry ; Coronary Artery Disease ; drug therapy ; physiopathology ; Drugs, Chinese Herbal ; administration & dosage ; Female ; Heart ; drug effects ; physiopathology ; Humans ; Male ; Middle Aged ; Myocardial Revascularization ; Myocardial Stunning ; drug therapy ; physiopathology ; surgery ; Recovery of Function

Objective To investigate the method and value of adjustable interatrial fistulization in the operation of congenital heart disease(CHD) accompany with severe pulmonary arterial hypertension(PH).Methods Twenty-seven patients(19 male,8 females) accompany with severe PH were entered the study,age ranged from 4 to 14 years old,weight from 13.7 to 42.0 kilogram.The enrolled diseases included 11 cases of atrial septal defect(ASD),10 cases of ventricular septal defect(VSD),4 cases of patent ductus arteriosus(PDA),and 2 cases of Ebstein syndrome accompany with severe tricuspid insufficiency.All patients were diagnosed as CHD accompany with severe PH(bidirectional shunt)which was the contraindications for routine operation before operation through chest X-ray,electrocardiography,ultrasonic cardiography,cardiac catheteri-zation and cardiac angiography.Results With adjustable interatrial fistulization and treatment to the abnormalities,14 fistulaes were closed immediately after operation,7 fistulaes were closed 2 days after operation,3 fistulaes were closed 3 days and 1 fistulae was closed 4 days after operation and accompanied with empyema discharged initiatively.One fistula was never closed,1 case died from low cardiac output symptom.The effective rate was 92.6%,closed to that of routine operations.Conclusion Adjustable interatrial fistulization is an easy procedure,and it can decrease the danger of PH post-operation effectively and provide operation opportunity for those patients with CHD approaching terminal stage.

OBJECTIVETo investigate the methods of determining aluminum silicate coated on the surface of silica particles and analyze the role of surface occlusion on development of silicosis.

METHODSRespirable dust samples were collected on filters using 2 L/min flow in tungsten mines and pottery factories of Jiangxi province, and tin mines of Guanxi province. Dust particles were analyzed by a multiple-voltage scanning electron microscopy-energy dispersive X-ray spectroscopy (MVSEM-EDS) using 20 KeV and 5 KeV electron beam accelerating voltages. Changes in the silicon to aluminum X-ray line intensity ratio between the two voltages are compared particle by particle. This provided an index that distinguishes a silica particle that was homogeneously aluminum-contaminated from a clay coated silica particle.

RESULTSThe total of 3,982 dust particles from 47 dust samples of seven pottery factories, three tin mines and three tungsten mines were analyzed in this study. Significant difference of aluminum silicate coated on the surface of silica particle was shown between particles from pottery factories and tin mines. The average sample percentage of respirbale-sized silica particles alumino-silicate occlusion in the pottery factories (45%) was higher than that in the tin mines (18%) and tungsten mines (13%).

CONCLUSIONHigher percentages silica particles alumino-silicate occlusion is observed in the pottery factories than that in metal mines. These surface analysis results help to understand differences in risk of silicosis when exposure is normalized to cumulative respirable surface silica dust.

Aluminum ; analysis ; Dust ; analysis ; Microscopy, Electron, Scanning ; Mining ; Silicon ; analysis ; Silicon Dioxide ; chemistry ; Spectrometry, X-Ray Emission

OBJECTIVETo investigate the frequency of EML4-ALK fusion gene in non-small-cell lung cancer (NSCLC) patients, and its correlation with clinicopathologic features.

METHODSReal-time PCR was used to detect the presence of EML4-ALK fusion gene in 268 cases of NSCLCs using paraffin-embedded tissue samples(among which 164 samples were re-validated by Sanger sequencing). Related clinicopathological correlation was analyzed.

RESULTSEML4-ALK fusion gene was found in 4.1% (11/268) of the cases. One hundred and sixty four samples were verified by Sanger sequencing, and the overall coincidence of the results of two methods (Sanger sequencing and Real-time PCR) was 100%. Female patients (5.9%, 5/85), ≤ 60 years of age (4.3%, 6/140), non-smokers (6.8%, 8/118) and adenocarcinomas (7.6%, 10/132) had a higher mutation rate than that in male patients (3.3%, 6/183), > 60 years of age (4.0%, 5/124), smokers (1.6%, 2/132) and squamous cell carcinomas (1.3%, 1/79), although no statistical significance in age (P = 0.918), gender (P = 0.503), smoking history (P = 0.092) and histological type (P = 0.094).

CONCLUSIONSChinese NSCLC patients have a 4.1% detection rate of EML4-ALK fusion gene in the tumor tissues. Female, non-smoker and adenocarcinoma histological subtype tend to be associated with a higher rate of EML4-ALK gene fusion.

Adenocarcinoma ; genetics ; metabolism ; pathology ; surgery ; Adult ; Aged ; Carcinoma, Non-Small-Cell Lung ; genetics ; metabolism ; pathology ; surgery ; Female ; Humans ; Lung Neoplasms ; genetics ; metabolism ; pathology ; surgery ; Male ; Middle Aged ; Oncogene Proteins, Fusion ; metabolism ; Sex Factors ; Smoking ; Young Adult

OBJECTIVETo evaluate the clinical outcome of periapical endodontic surgery for teeth that can't be treated by nonsurgical endodontic methods.

METHODSSixty-two affected teeth were chosen for surgical endodontic treatment, of which 31 teeth underwent periapical curettage and the others were treated by root-end resection, retrograde preparation and filling. A radiography was taken immediately after surgery and was compared with those taken at 12 and 24 months. The results of two groups were analyzed using the chi2 test.

RESULTSThe success rate for retrograde filling was higher (85% after 12 months, 88% after 24 months) compared with that of periapical curettage (52% after 12 months, 45% after 24 months). The difference in success rate between the two groups was statistically significant.

CONCLUSIONSUltrasonic root-end preparation and retrograde filling is a good choice of treatment when the teeth can't be treated appropriately by nonsurgical treatment.

Apicoectomy ; methods ; Female ; Humans ; Male ; Retrograde Obturation ; methods ; Treatment Outcome