Aim To investigate the effects of PB-19 on action potential (AP) of ventricular cells in vitro and ischemia and reperfusion induced arrhythmias in vivo in rats. Methods ① We established the model of isolated rat right ventricular wall and perfused the models with normal Tyrode’s solution and PB-19.Microelectrode was inserted into the cells to record the AP. ② We ligated the left anterior descending coronary artery of rats to study the effects of PB-19 on ischemia and reperfusion induced arrhythmias. 50 rats were divided into 5 groups randomly and were given iv. injection with normal saline and PB-19 of different concentrations respectively. We recorded Ⅱ ECG of the rats. Results ①In vitro models, the APD_ 50、APD_ 90 of PB-19 group were significantly longer than that of control group respectively (P

[Objective]To construct arecombinant eukaryotic expression plasmid carrying human BMP-7 gene which was transfected into bone marrow stromal cells(BMSCs) in vitro and expressed.[Method]Clone human BMP-7 cDNA from a Chinese woman placenta was recombinanted with plasmid pcDNA3.1,to construct eukaryotic expression carrier of recombinaut pcDNA3.1-hBMP-7.The BMSCs were isolated from rabbit bone marrow and cultured in vitro.They were divided into three groups: pcDNA3.1-hBMP-7 transduced group;pcDNA3.1 transduced group;untransduced group.The expression of hBMP-7 was detected by RT-PCR,Immuneohistochemistry.ALP,Collogen,Osteocalcin production were detected.[Result]The pcDNA3.1-hBMP-7 transduced BMSCs expressed hBMP-7 at both mRNA and protein levels.ALP activity was detected in pcDNA3.1-hBMP-7 transduced cells from day 2 to day 10,peaking on day 8.Collogen,osteocalcin production were elevated significantly too(P

BACKGROUND:Recently, the clinical repair methods of irregular wound on fingers primarily include local pedicled flap and free mini-flap of upper extremities or lower extremities.
OBJECTIVE:To discuss the application of free mini-flap derived from upper limb in repairing the wound on fingers.
METHODS:From December 2010 to February 2014, 12 patients with irregular wounds on 12 fingers were selected from Department of Traumatic Orthopaedics and Hand Surgery, First Affiliated Hospital of Guangxi Medical University, China. The size of wounds ranged from 1.5 cm × 2.0 cm to 3.0 cm × 4.5 cm with different degrees of bone or tendon exposure. After the debridement, 12 patients were treated by free mini-flaps of upper limb. The donor sites were directly sutured.
RESULTS AND CONCLUSION:Among the 12 patients, al the wounds at recipient and donor sites were healed at stage I, and the free mini-flags survival completely. Al of patients were fol owed up for 3-6 months (average 4.5 months). Free mini-flags had good appearance and needn’t undergo secondary trimming. The active motion of fingers was improved dominantly. According to the criteria of Hand Surgery Association Society of Chinese Medical Association Society for the function evaluation of upper limb, three cases were excellent, eight were good, and only one was bad. The excellent and good rate was 91%. Free mini-flaps of upper limb are an ideal method for repair of wounds on fingers. It has no injury to normal tissue in hands, donor site is very secluded, and the short-term curative effect is good.

The extracting technology of salidroside, tyrosol, crenulatin and gallic acid from Rhodiolae Crenulatae Radix et Rhizoma was optimized. With extraction rate of salidroside, tyrosol, crenulatin and gallic acid as indexes, orthogonal test was used to evaluate effect of 4 factors on extracting technology, including concentration of solvent, the dosage of solvent, duration of extraction, and frequency of extraction. The results showed that, the best extracting technology was to extract in 70% alcohol with 8 times the weight of herbal medicine for 2 times, with 3 hours once. High extraction rate of salidroside, tyrosol, crenulatin and gallic acid were obtained with the present technology. The extracting technology was stable and feasible with high extraction rate of four compounds from Rhodiolae Crenulatae Radix et Rhizoma, it was suitable for industrial production.
Chemical Fractionation ; methods ; Chemistry, Pharmaceutical ; methods ; Coumarins ; isolation & purification ; Drugs, Chinese Herbal ; isolation & purification ; Gallic Acid ; isolation & purification ; Glucosides ; isolation & purification ; Phenols ; isolation & purification ; Phenylethyl Alcohol ; analogs & derivatives ; isolation & purification ; Rhizome ; chemistry ; Rhodiola ; chemistry

BACKGROUND:Under the in vitro conditions of cell harvesting, culture, and transplantation, whether bone marrow stromal cells (BMSCs) can be effectively applied in local gene therapy remains unclear.OBJECTIVE: To construct a recombinant eukaryotic expression plasmid carrying human bone morphogenetic protein-7 (hBMP-7) gene, and to expect to enhance osteoinductive properties of rabbit BMSCs transfected.DESIGN, TIME AND SETTING: A cell-genomics in vitro observation was performed at the Laboratory of Scientific Research, Second Affiliated Hospital of Harbin Medical University between July 2006 and July 2007.MATERIALS: Human healthy fresh placental tissue was provided by the Department of Gynaecology and Obstetrics, Second Affiliated Hospital of Harbin Medical University. Written informed consent was obtained from the women. One healthy male New Zealand rabbit was provided by the Laboratory Animal Center, Harbin Medical University.METHODS: hBMP-7 gene was cloned from human placental tissue to construct a recombinant eukaryotic expression plasmid carrying hBMP-7 gene by conjugating with eukaryotic expression vector pcDNA3.1. BMSCs were isolated from rabbit bone marrow and cultured in vitro. Then they were divided into 3 groups: pcDNA3.1-hBMP-7-transfected, pcDNA3.1 -transfected, and untransfected. 5×106 BMSCs were inoculated into a 60 mm3 flask containing antibiotic-free medium 1 day prior to transfection.MAIN OUTCOME MEASURES: RT-PCR and immunohistochemistry were employed to detect hBMP-7 expression in BMSCs, alkaline phosphatase activity, hydroxypreline content, and osteocalcin production in each group. RESULTS: After 72-hour transfection, a 1.3 kb fragment was seen in the pcDNA3.1-hBMP-7-transfected group, showing brown granules in the endochylema, but not seen in the pcDNA3.14ransfected and untransfected groups. ALP activity in the pcDNA3.1-hBMP-7-transfected group significantly increased at 2 days after transfection, peeked at 8 days, and still increased at 10 days. At each time point, alkaline phosphatase activity, hydroxyproline content, and osteocalcin production were significantly higher in the pcDNA3.1-hBMP-7-transfected group than in the pcDNA3.1 -transfected and untransfected groups (P<0.05 or P<0.01).CONCLUSION: Recombinant eukaryotic expression vector pcDNA3.1- BMP-7 was constructed successfully. Results indicated that hBMP-7 was expressed in BMSCs sufficiently and was involved in inducing differentiation of BMSCs into osteoblasts. The method would provide substantial basement for hBMP-7 gene therapy.

Animals ; Animals, Newborn ; Apoptosis ; drug effects ; Cell Survival ; drug effects ; Cells, Cultured ; Cerebral Cortex ; cytology ; drug effects ; Dose-Response Relationship, Drug ; Neurons ; drug effects ; Nickel ; toxicity ; Rats ; Rats, Wistar

OBJECTIVE: To investigate the occurring mechanism and clinical characteristics of severe acute pancreatitis (SAP) associated with hypoalbuminemia in early stage and its influence on prognosis of SAP and the preventive and therapeutic management of this disease. METHODS: One hundred and thirty-eight cases diagnosed as SAP complicated by hypoalbuminemia in early stage were accepted in our hospital from August 1, 2003 to December 31, 2004, and they were divided into 2 groups according to the level of plasma albumin: mild hypoalbuminemia (30 to 35 g/L) group and severe hypoalbuminemia (<30 g/L) group. The complications in the early stage, related parameters, and the incidence rate of infection and mortality in the later stage were evaluated respectively. RESULTS: The incidence rates of renal dysfunction, shock, cardiovascular failure and gastrointestinal hemorrhage, the score of acute physiology and chronic health evaluation II (APACHE II ) and the frequencies of pulse and breath in the severe hypoalbuminemia group were all higher than those in the mild hypoalbuminemia group (P<0.05 or P<0.01). The differences of incidence rate of hepatic failure and the scores of Ranson and Balthazar CT between these two groups had no statistical significance (P>0.05). The incidence rate of infection and the mortality in the severe hypoalbuminemia group were higher than those in the mild hypoalbuminemia group (P<0.01) in the later stage of SAP. CONCLUSION: Hypoalbuminemia in the early stage can accelerate the deterioration in pathophysiology of SAP. The lower level of the plasma albumin is in the early stage, the more complications and the higher incidence rate of infection and mortality will be in the later stage. To relieve the extent of systemic inflammatory response syndrome (SIRS) and abundant supplement of albumin, amino acid and lipid in time may be crucial to prevent the occurrence and deterioration of hypoalbuminemia.

Objective To compare the clinical efficacy of different treatments based on radical surgery in stage Ⅰ b2 and Ⅱ a2 cervical cancer through prospective randomized controlled study. Methods A total of 133 patients with stage Ⅰb2 and Ⅱa2 cervical cancer treated at Beijing Obstetrics and Gynecology Hospital of Capital Medical University during January 2009 to December 2012 were enrolled and randomly assigned to receive one of the following three treatments: preoperative intracavitary irradiation (PII) group, radical hysterectomy (RH) group, and neoadjuvant chemotherapy (NACT) group. Operation method included uterine extensive resection, pelvic lymph node excision, with or without para-aortic lymph node resection. The recent curative effect and side effect of preoperative treatment were observed. The operation time, intraoperative blood loss, surgical complications, postoperative pathological risk factors and postoperative adjuvant therapy and side effect, the survival situation were evaluated among the 3 groups. Results (1)The response rates were 88%(37/42) and 82%(37/45) respectively of the PII group and NACT group. The difference was insignificant (P=0.528). Side effects were less in the PII group. Only 5 patients (12%,5/42) had slight gastrointestinal reaction. Myelosuppression and gastrointestinal reaction in NACT group were 76%(34/45) and 67%(30/45) respectively, which were more serious than that in group PII group (P<0.05). (2) Intraoperative blood loss and operation time in PII group [(678 ± 239)ml and(181 ± 39)minutes] and NACT group [(625 ± 137)ml and(168 ± 25)minutes] had a decreasing trend compared with that in RH group [(711 ± 319) ml and (202 ± 64) minutes], but the differences were no significant (P>0.05). NACT group could shorten operation time compared with the RH group (P<0.05). The lymph node metastases rate were 30%(14/46), 29%(12/42)and 29%(13/45)and the deep stromal invasion rate were 22%(10/46), 31%(13/42)and 31%(14/45)in RH group, PII group and NACT group respectively (all P>0.05). The lymph-vascular space involvement (LVSI) in NACT group was significantly lower than that in RH group [31%(14/45) vs 57%(26/46), P=0.015]. The number of patients with histological risk factors in NACT group was higher thanthat in RH group [27%(12/45)vs 9%(4/46),P=0.024]. All surgery were successfully completed and no treatment-related deaths occurred in three groups. The incidence of 3-4 grade adverse reactions evaluated by the common terminology criteria for adverse event (CTCAE) was 13% (6/46), 14% (6/42), 18% (8/45) in RH group, PII group and NACT group respectively (P=0.855). Three-year disease free survival (PFS) were 74.0%, 78.5%and 80.0%, and 3-year overall survival (OS) were 80.4%, 83.3%and 84.4%in RH group, PII group and NACT group respectively (all P>0.05). Conclusions The recent curative effect of PII and NACT were similar. They couldn′t improve 3-year of PFS and OS of the patients withⅠb2 andⅡa2 stage cervical cancer. But NACT can reduce the operation difficulty and can reduce the incidence of postoperative pathological risk factors, which could reduce postoperative adjuvant therapy.

The stems and branches of Hypericum petiolulatum were extracted by alcohol and liquid-liquid extraction. Seven furofuran lignans were isolated from the ethyl acetate fraction of ethanol extract of H. petiolulatum by using silica gelchromatography, Sephadex LH-20 chromatography, medium-pressure liquid chromatography and preparative HPLC. Their structures were identified by the spectroscopic methods as pinoresinol (1), medioresinol (2), 8-acetoxypinoresinol (3), epipinoresinol (4), (+)-syringaresinol (5), (+)-1-hydroxysyringaresinol (6) and erythro-buddlenolE (7). All the isolates were firstly found in H. petiolulatum. In the bioassay, compound 7 showed remarkable antioxidative activity inhibiting Fe(+2)-cystine induced rat liver microsomal lipid peroxidation with inhibitory rate 38% at a concentration of 1 x 10(-6) mol · L(-1) (positive control Vit E with the inhibitory rate of 35% at the same concentration).
Animals ; Antioxidants ; chemistry ; isolation & purification ; pharmacology ; Drugs, Chinese Herbal ; chemistry ; isolation & purification ; pharmacology ; Hypericum ; chemistry ; Lipid Peroxidation ; drug effects ; Microsomes, Liver ; drug effects ; metabolism ; Molecular Structure ; Oxidative Stress ; drug effects ; Plant Stems ; chemistry ; Rats

BACKGROUNDMonilethrix is an autosomal dominant hair disorder characterized clinically by alopecia and follicular papules. In this study, we collected a Han monilethrix family to detect the mutations in patients and investigated the correlation between the genotype and phenotype of monilethrix.

METHODSIn this study, we identified a Chinese family with monilethrix through light microscopic and scanning electron microscopic (SEM) examination. Genomic DNA from peripheral blood samples was prepared. DNA samples from controls and monilethrix patients were subject to polymerase chain reaction (PCR) amplification. Two pairs of primers were used to amplify the seventh exon of KRT86. Mutation screening of the PCR products was detected using direct sequencing.

RESULTSLight microscopic examination showed a regular alternate enlargement and narrow area. SEM examination showed that part of the cuticle of the nodules shed and disappeared gradually in the narrow area with granular protrusions on the surface similar to the erosion-like structure. Parallel longitudinal ridge and groovepattern appeared, and the ridges varied in width, like dead wood. A heterozygous transversion mutation c.1204G > A (p.E402K) in the seventh exon of KRT86 was identified in both patients.

CONCLUSIONSThe mutation of extron 7 of KRT86 identified plays a major role in the pathogenesis of this pedigree with monilethrix, and is a mutation hot spot of KRT86. Further research is needed to explore the relationship between the phenotype and the mutation of the type II hair keratin gene KRT86 of monilethrix.

Asian Continental Ancestry Group ; genetics ; China ; ethnology ; Humans ; Keratins, Hair-Specific ; genetics ; Keratins, Type II ; genetics ; Microscopy, Electrochemical, Scanning ; Monilethrix ; etiology ; genetics ; pathology ; Mutation