Objective To investigate the possibility that the construction and expression of a eukaryotic expression vector system of rat NN-NAT gene. Methods The full-length cDNA fragment of rat AA-NAT gene was amplified by RT-PCR method.After retrieving the PCR products,ligating it with pTARGET~(TM) vector,transformating ligation reaction to JM109 huge efficiency competent cells and identifying the recombinant plasmid,the recombinant eukaryotic expression vector pTARGET~(TM)-AANAT was transfected into rat L6 myoblasts with lipofectamine.Accordingly,engineered cells selected by antibiotic G418 were detected by the methods of RT-PCR and Westem blotting. Results It was revealed that,amplified AA-NAT cDNA confirmed by agarose gel electrophoresis could ligate with pTARGET~(TM) vector and subcloned into JM109 cells.L6 cells transfected with pTARGET~(TM)-AA-NAT survived well after G418 selection and expressed AA-NAT protein. Conclusion Our results suggest that we have prepared rat AA-NAT stable eukaryotic expression system successfully although it was just a primary result.This system can be used for the transfection of L6 myoblast.

Cardiomyopathies ; diagnosis ; etiology ; therapy ; Humans

OBJECTIVE:To systemically review the efficacy and safety of Ambroxol hydrochloride injection by intravenous drip combined with aerosol inhalation in the treatment of neonatal pneumonia,and provide evidence-based reference for the clinical treatment. METHODS:Retrieved from PubMed,Medline,CBM,CJFD,VIP and Wanfang Database,randomized controlled trials (RCT)about Ambroxol hydrochloride injection by intravenous drip combined with aerosol inhalation(test group)versus Ambroxol hydrochloride injection alone (control group) in the treatment of neonatal pneumonia. Meta-analysis was performed by using Rev Man 5.2 software after data extracting and quality evaluating by Cochrane 5.1.0. RESULTS:Totally 14 RCTs were enrolled,involv-ing 1 407 patients. Results of Meta-analysis showed the clinical efficacy[RR=1.19,95% CI(1.13,1.24),P<0.001] in test group was significantly higher than control group,the time of cough disappearance[MD=-1.75,95%CI(-1.91,-1.58),P<0.001], asthma disappearance[MD=-1.38,95%CI(-1.67,-1.08),P<0.001] and pulmonary rales disappearance [MD=-1.44,95%CI (-1.77,-1.11),P<0.001] and hospitalization days[MD=-2.04,95%CI(-2.25,-1.82),P<0.001] were significantly shorter than control group,the differences were statistically significant;and there was no significant difference in the incidence of adverse reactions between 2 groups[RR=1.00,95%CI(0.49,2.05),P=1.00]. CONCLUSIONS:Both the efficacy and safety of Ambroxol hydrochloride injection by intravenous drip combined with aerosol inhalation are good in the treatment of neonatal pneumonia.

Batch fermentation of lycopene by recombinant E. c ol i ZYL-2 at various temperatures ranging between 23℃～37℃ were studied in 7L fermentor. At 33℃, cell specific growth rate in earlier stage of culture was higher, and the time obtained maximum cell dry weight was shorter at other tempe rature. while after 9 h, lycopene specific production rate was higher at 28℃. Based on these results, a two-stage temperature control strategy was developed in which 33℃ was used for fermentation for the first 9 h and the temperaturew as switched to 28℃ after 9h. Using this temperature-shift strategy, the maxim al lycopene content and productivity reached 605.25?g L-1 and 28.82?g L-1h-1. The lycopene fermentation level obtained by the strategy was higher than those in single temperature-control experiments.

OBJECTIVE To d e f i n e t h e microsurgical anatomy and exposure obtained by the maxillary swing approach. METHODS Ten adult cadaver specimens fixed by formalin solution were dissected under 5 to 20 times magnification. The microsurgical anatomy and measurement were performed by mimicking the maxillary swing approach. The anatomic relationship of the muscles, arteries,veins,nerves were carefully recorded. RESULTS The maxillary swing approach provides wide exposure extending from the central base to the lateral cranial base,including turkish saddle,the ipsilateral cavernous sinus,the clivus and C1,the nasopharynx,the pterygopalatine and infratemporal fossa,and the parapharyngeal space,etc. CONCLUSION The maxillary swing approach provides a suitable route for accessing lesions involving both the central and lateral cranial base. The sphenoid pterygoid process,the Eustachian tube,and the lateral pharyngeal wall separates the central cranial base from the lateral cranial base and limits anterolateral access to the central cranial base. Removing the pterygoid process provides exposure extending from the central to the lateral cranial base and allows for wide anterolateral access to the clivus and upper cervical spine. The maxillary swing approach is difficult and limited to reach the poststyloid compartment of the parapharyngeal space,the lateral region of styloid process,the horizontal segment of the petrous carotid.

Antihypertensive Agents ; administration & dosage ; therapeutic use ; Humans ; Hypertension ; drug therapy ; genetics ; Molecular Biology

OBJECTIVETo evaluate the clinical outcomes and complications of Triple-Endobutton plates in treating Tossy type III acromioclavicular joint dislocation.

METHODSFrom January 2011 to January 2013,45 patients with Tossy type III acromioclavicular joint dislocation were treated with Triple-Endobutton plates. There were 35 males and 10 females with an average age of 30.5 (ranged from 19 to 60) years old. At the final follow-up, VAS, DASH, Constant-Murley criterion were used to evaluate shoulder function.

RESULTSAll patients were followed up from 15 to 36 months. No neurovascular injury, wound infection and stress fractures were found,but 3 patients had a re-dislocation. At the final follow-up,the mean VAS score was decreased from (5.7±1.6) preoperatively to postoperative (0.2±0.1); DASH score was significantly decreased from (19.6±4.3) preoperatively to (0.3±0.1) postoperatively; Constant-Murley score was improved from (34.4±4.3) before operation to (94.8± 3.5) after operation.

CONCLUSIONClinical outcomes of treating Tossy type III acromioclavicular joint dislocation with Triple-Endobutton plates is satisfactory. However, re-dislocation is still the most common complication. Careful perioperative management is an important factor in preventing re-dislocation.

Acromioclavicular Joint ; injuries ; surgery ; Adult ; Bone Plates ; Female ; Follow-Up Studies ; Fracture Fixation, Internal ; instrumentation ; methods ; Humans ; Male ; Middle Aged ; Shoulder Dislocation ; surgery ; Treatment Outcome ; Young Adult

Acupuncture Points ; Asthma ; drug therapy ; Bronchitis ; drug therapy ; Child, Preschool ; Drugs, Chinese Herbal ; administration & dosage ; Female ; Humans ; Infant ; Male

Transient receptor potential vanilloid 1 (TRPV1) is a non-selective cation channel,which can be activated by multiple pathways during the course of the diseases.Recent studies indicate that primary sensory neurons of the pancreas express TRPV1 receptor and the activation of TRPV1 receptor promotes pancreatic inflammation.Moreover,blockade of these transient receptor potential channels can greatly ameliorate the pain response in experimental pancreatitis.

Objective　To quantify the characteristics of the auditory brainstem responses(ABR) in the normal newborns, in order to provide a data for newborn hearing screening. Methods　The ABR to click stimuli was investigated in a group of eighty normal newborns aged from 3 to 8 days and compared to those observed from the normal hearing youths. Results　Wave, Ⅰ,Ⅲ and Ⅴ were identifiable in all of 160 ears at 130 dB pe-SPL. The threshold of wave Ⅴ to click stimuli was 61.94±6.87 dB peSPL, significantly higher than that in adults. Both latencies for wave Ⅰ,Ⅲ and Ⅴ and interwaves latencies Ⅰ-Ⅲ,Ⅲ-Ⅴ and Ⅰ-Ⅴ were significantly tonger than those for the adults under identical test conditions. The ratio of interwaves latency Ⅲ-Ⅴ to Ⅰ-Ⅲ for normal newborn was 0.71±0.12, statisitically smaller than that in adults. Conclusion　Click level 70 dB peSPL appeared to be a feasible criterion of threshold of ABR for newborn hearing screening. There were no significant effects of sex and ear in newborn hearing screening. The auditory system of the newborns was not equally mature. The neurological system is the primary source of differences between newborns and adults.