AIM:To investigate the effects of tanshinone IIA ( Tan) on cardiac action potential in rats with a-cute cerebral ischemia (ACI).METHODS:ACI was established in rats accordingly .Animals were divided into 3 groups:sham group, ACI group, and ACI with Tan treatment group .The defect of neural function in each group was graded , elec-trocardiogram was measured , monophasic action potential was recorded , and the levels of cardiac troponin I ( cTnI ) and creatine kinase-MB ( CK-MB) were examined by commercially available kits .RESULTS:Compared with ACI group , Tan significantly decreased the scores of the defect of neural function , reduced the incidence and duration of the abnormalities in electrocardiogram , prolonged the effective refractory period , action potential duration at 50%repolarization and action po-tential duration at 90%repolarization, and inhibited the elevation of cTnI and CK-MB levels.CONCLUSION:Tan main-tains a stable heart rhythm in ACI rats , which may be related to its protective effect on ischemic myocardium .

Inwardly rectifying potassium (Kir) channels exhibit an asymmetrical conductance at hyperpolarization (high conductance) compared to depolarization (low conductance). The KCNJ10 gene which encodes an inwardly rectifying K+ channel Kir4.1 subunit plays an essential role in the inner ear and hearing. Mutations or deficiency of KCNJ10 can cause hearing loss with epilepsy, ataxia, sensorineural deafness, and renal tubulopathy (EAST) or SeSAME (seizures, sensorineural deafness, ataxia, mental retardation, and electrolyte imbalance) syndromes. In this review, we mainly focus on the expression and function of Kir4.1 channels in the inner ear and mutation-induced EAST/SeSAME syndromes to provide insight for understanding the pathogenesis of deafness induced by KCNJ10 deficiency.
Deafness ; genetics ; metabolism ; Ear, Inner ; metabolism ; Hearing Loss, Sensorineural ; genetics ; metabolism ; Humans ; Intellectual Disability ; genetics ; metabolism ; Mutation ; Potassium Channels, Inwardly Rectifying ; genetics ; metabolism ; Seizures ; genetics ; metabolism

Research-Based Teaching is to cultivate students’ competence of study and innovation,which requires teachers to change their concept and make careful design and full preparation before they put it into practice. The practice shows that adopting the teaching method of bringing students’ autonomous study into full play and intensifying the training of their scientific research is an important approach to implement it. Research-Based Teaching will play a more and more important role in cultivating students’ comprehensive competence.

Objective To investigate the clinical significances of thyroid function changes in patients with post-stroke depression(PSD). Methods Sixty two cases with acute cerebral infarction (CI) were stratified into two groups by Zung self-rating depression scale, single cerebral infarct patients group (CI group) and PSD group. Serum levels of FT3, FT4 and TSH of the patients were detected on 2 days,7days,14 days and 21days after admission. Results ①On each time point after admission, FT3 levels in PSD group were lower than those in CI group. FT3 levels in the two groups on the 7 days were higher than those on 2 days(2.04±0.53 vs 1.28±0.19, 1.43±0.91 vs 1.07±0.37, P <0.05).On the 14 and 21 days, levels of FT3 in the PSD group were continuously increased.②On the 2 days and 7 days after admission, FT4 levels in PSD group were higher than those in CI group. FT4 levels in the two groups on the 14 days were lower than those on 7 days(1.52±0.18 vs 2.09±0.26, 1.57±0.31 vs 2.28±0.38, P <0.05). ③On the 2 days after admission,the TSH level in the PSD group were lower than that in CI group(2.02±0.36 vs 2.27±0.49,P <0.05). Conclusion The results indicated that the hypothalamic-pituitary-thyroid axis plays important role in the pathogenesis of PSD.

Objective To investigate the effects of different penetration enhancers on percutaneous absorption of Xiaoyan Runma mucilage in vitro, and to improve the curative efficacy of this mucilages through selection of the effective penetration enhancers. Methods Xiaoyan Runma mucilage was prepared with different penetration enhancers. An intelligent permeability instrument was used for in vitro percutaneous absorption test of rats , with isolated mice abdomen skin serving as in vitro transdermal barrier and saline isotonic solution as receptor fluid. Then the contents of lidocaine hydrochloride in receptors were determined by HPLC.The accumulative transit dose (Q) and percutaneous permeability (J) within 12 h were calculated and compared with those of mucilage without any enhancer. Results With Q value serving as an index, different enhancers had different promote permeation effects on Xiaoyan Runma mucilage, and the effects in descending order were as follows:4% azone [(222.75±3.4) μg?(cm2)-1]>2% azone[(207.42±5.1) μg?(cm2)-1]>3% menthol [(183.38±4.9) μg?(cm2)-1]>5%menthol [(160.82±5.4) μg?(cm2)-1]>2% azone+3% menthol [(151.25±5.5) μg?(cm2)-1]>2% azone+5% isopropyl myristate [(127.26±7.1) μg?(cm2)-1]>2% oleic acid [(125.16±6.5) μg?(cm2)-1]>no enhancer [(109.82±8.2)μg?(cm2)-1].4% azone was the best penetration enhancer for the mucilage delivery in vitro, with Q and J value as [(222.75± 3.4)μg?( cm2 )-1 ] and 19. 896 μg?( cm2 )-1?h-1 , respectively, which was 2. 08 times those of mucilages without any enhancer. Conclusion Being as a transdermal absorption enhancer of Xiaoyan Runma mucilage, 4% azone has the best effect. This study can provide the optimal formulation for transdermal delivery system of Xiaoyan Runma mucilage.

Astragali Radix (AR), known as Huangqi in China, is one of the most popular herbal medicines learnt worldwide to reinforce Qi (the vital energy). AR is traditionally prepared from the dried roots of Astragalus membranaceus or A. membranaceus var. mongholicus. It has been reported to have cardiotonic, hepatoprotective, hypotensive, immunostimulant, anti-aging, anti-oxidative, antidiabetic, and anti-inflammatory activities. The bioactive compounds were found to be flavonoids, saponins, polysaccharides, amino acids, and some trace elements. The present paper reviews the studies on AR including history, phytochemistry studies, pharmacological functions, and clinical application in recent years.

Objective To investigate the effect of cosmetic surgery on the facial soft tissue injuries.Methods The clinical data of 52 patients with facial soft tissue injuries from June 2013 to June 2014 were analyzed retrospectively.And plastic surgical techniques were applied to the early treatment of facial soft tissue injuries in patients,according to the size of defect and the degree of deformity of the patients,different plastic surgery treatment was chosen,such as skin flap or skin graft to repair wound surfaces.In this process,one must follow sterile noninvasive principle strictly with emphasis on the technique of plastic surgery such as entire debridement,wound healing application of skin flap and so on.Results Total 49 cases of facial soft tissue injuries were healed by first intention without significant complications,while 4 cases of them had mild scars.Absorbable suture exposition appeared in 3 patients after primary healing.Those sutures were romoved after disinfected and no sequelaes were happened.All patients were recovered with good appearances and functions to the most exent.Conclusions The treatment of facial soft tissue injuries,by applying plastic and aesthetic surgery,could reduce scar and postoperative deformity,and secondary corrective procedures can be avoided in most patients.

Objective To investigate the effect and perioperative nursing experience of surgical operation on patients with incomplete cervical spinal cord injury caused by traumatic cervical spine fracture. Method Fifty-nine patients with traumatic cervical spine fracture in our hospital from January 2011 to 2014 were nursed perioperatively, including before operation , training accttenty with swallowing and blowing balloons besides basic nursing care , and after operation , mental care , close observation and functional exercises postoperatively. Results The operation time was (110.5+13.0) min, the amount of bleeding was (155.6+7.5)mL. Three patients developed hematoma compression, 13 patients developed high fever. All patients were cured after treatment and nursing. Conclusion Preoperative training of swallowing and blowing balloon is fundamental for ensured surgical effect and intraoperative surgical cooperation and close observation together with postoperative mental care, close obsersation and functional exercise are the guarantee for surgical effect.

Objective To investigate the changes of T cells and disease development in the mice with Smad3 deficiency in the bone marrow cells.Methods Bone marrow cells obtained from Smad3 null(Smad3~(-/-))mice and wild type(Smad3~(+/+))mice were injected to Co~(60)-irradiated GFP mice,respectively.The general states of the bone marrow recipients were observed.The mice were sacrificed at the sixth week and the histopathological changes in the intestines were examined.The changes of T cells from lymph nodes were detected by flow cytometry.Results Smad3~(-/-) bone marrow recipient mice appeared a wasting syndrome and intestinal inflammation.The amount of CD4~+ CD62L~(lo) T cells in lymph nodes was significantly increased.Conclusion These results indicate that the mice with Smad3 deficiency in the bone marrow cells present an inflammatory disorder and their T cells are activated.

Bile acid efflux pump(BSEP)is the major transporter of bile salts secreted by liver cells into the bile,the variation and inhibition of which are connected with cholestasis and drug-induced liver injury.A deep understanding of the physiological and pathological function of BSEP IS achieved by analysis and summary of diseases.The paper briefly illustrates the structure, expression,regulation,substrates,inhibitors and diseases of BSEP,in order to provide further theoretical and experimental basis for the clinical treatment.