Objective To investigate the effects of rocuronium on the neuromuscular junction of rat diaphragm. Methods One hundred and sixty rats were used in the study which was approved by the Animal Care Committee of the General Hospital of PLA. In isolated non-uniformly stretched muscle preparation (INSMP) of rat diaphragm, micro-endplate potentials (MEPP) and endplate potentials (EPP) were recorded simultaneously with one microelectrode of one endplate. The effects of rocuronium in dosages of 2.5, 5, 10, 20?g/ml on the amplitude and frequency of MEPP and the amplitude of EPP were observed. Results Rocuronium could decrease both the amplitude and frequency of MEPP obviously and the onset time was 1min after drug administration. The amplitude of EPP was depressed by rocuronium in a dose of 5?g/ml at 3min. Neither 2.5?g/ml nor 0.5?g/ml of rocuronium produced any effect on the amplitude of EPP. Conclusion The results indicated that rocuronium might produce a rapid and early presynaptic effect on neuromuscular junction in INSMP in rats.

Animals ; Brain ; metabolism ; Brain Ischemia ; blood ; enzymology ; Drugs, Chinese Herbal ; pharmacology ; therapeutic use ; Nitric Oxide ; blood ; Phytotherapy ; Rats ; Rats, Sprague-Dawley ; Superoxide Dismutase ; metabolism

OBJECTIVE: To explore the effects of Liangxue Huayu therapy (LXHYT), a traditional Chinese herbal therapy for cooling blood and dissipating blood stasis, on rat model of experimental autoimmune thyroiditis (EAT) and its impact on tumor necrosis factor-alpha and interleukin-10 mRNA expressions in peripheral blood mononuclear cells. METHODS: Forty Wistar rats were randomly divided into five groups: normal control group, untreated EAT group, cyclosporine A (CyA)-treated group, Tripterygium glycosides-treated group and Liangxue Huayu Recipe (LXHYR)-treated group. The interventions were given by gavage to the rats in different groups once a day. All rats were sacrificed after 4-week treatment, and the level of serum thyroglobulin antibodies (TgAb) and the changes of histological grade of thyroid specimen were assessed by blind evaluation. Expressions of tumor necrosis factor-alpha (TNF-alpha) and interleukin-10 (IL-10) mRNAs in peripheral blood mononuclear cells were assessed by real-time reverse transcription polymerase chain reaction method. RESULTS: There was a significant increase in the serum TgAb level and severe inflammatory infiltration in the untreated group. Expression of TNF-alpha mRNA in peripheral blood mononuclear cells was increased, while the expression of IL-10 mRNA was decreased in the untreated group (P<0.01). Compared with the untreated group, CyA, Tripterygium glycosides and LXHYF could decrease the serum TgAb level (P<0.05), but the three interventions showed no significant improvement in thyroid inflammation (P>0.05). TNF-alpha mRNA expression was decreased, while IL-10 mRNA expression was increased as compared with the untreated group (P<0.05). CONCLUSION: LXHYT can decrease the serum TgAb level and recover the balance of Th1/Th2. This may provide an experimental basis for further research of assessing the antipsoriatic effect of Chinese herbal drugs with a rat model of EAT as an alternative model of psoriasis in vivo.

Objective: To observe the clinical efficacy of acupuncture in treatment of chronic urticaria and the change in the content of serum immunoglobulin E (IgE), and to discuss the effect of acupuncture on the imbalance of T helper (Th)1/Th2 cell function via observing the changes in the contents of interferon-γ (IFN-γ) and interleukin-4 (IL-4). Methods: Ninety patients meeting the inclusion criteria of chronic urticaria were randomized into an acupuncture- medication group, an acupuncture group and a Western medication group by the random number table method. The acupuncture-medication group was intervened by acupuncture, cupping, collateral-pricking bloodletting and oral administration of cetirizine hydrochloride tablets; the acupuncture group was treated with acupuncture, cupping and collateral-pricking bloodletting; the Western medication group only received oral administration of cetirizine hydrochloride tablets. Before treatment and after 6-week treatment, the changes in the symptom scores and the contents of serum IgE, IFN-γ and IL-4 in the three groups were observed. Results: There were no significant differences in the total effective rate among the three groups (all P>0.05), but the cured and markedly effective rate was significantly higher in the acupuncture-medication group than that in the Western medication group (P<0.05). After treatment, the total symptom score decreased in the three groups (P<0.05), and the improvement of total symptom score in the acupuncture-medication group was more significant than that in the Western medication group (P<0.05). The component symptom scores all decreased after treatment in the three groups (all P<0.05); the improvements of the scores of itch intensity, and skin lesion size and number were more significant in the acupuncture-medication group than in the Western medication group (all P<0.05); the improvement of the skin lesion size score was more significant in the acupuncture group than in the Western medication group (P<0.01). The contents of IgE and IL-4 dropped (all P<0.05) and the content of IFN-γ increased (P<0.05) after treatment in the three groups; the post-treatment changes in the serum contents of IgE and IFN-γ were more significant in the acupuncture-medication group than in the Western medication group (both P<0.05). The incidence rate of adverse reactions was significantly lower in the acupuncture-medication group and acupuncture group than in the Western medication group (both P<0.05), and the relapse rate was significantly lower in the acupuncture-medication group than in the Western medication group (P<0.05). Conclusion: Combined acupuncture and medication can enhance the cured and markedly effective rate in treating chronic urticaria. Acupuncture is equivalent to cetirizine hydrochloride tablets comparing the clinical efficacy in treatment of chronic urticaria. Acupuncture plus medication and acupuncture alone both can effectively mitigate the clinical symptoms, with low incidence of adverse reactions. The relapse rate is low when using acupuncture together with medication. Acupuncture plus medication can work better in regulating the contents of IgE and IFN-γ and improving the imbalance of Th1/Th2 cell function.

Administration, Inhalation ; Animals ; Erythrocyte Count ; Erythrocytes ; drug effects ; Female ; Formaldehyde ; toxicity ; Hemoglobins ; analysis ; Male ; Mice

Objective To evaluate the potentiation of neuromuscular block produced by rocuronium during isoflurane anesthesia. Methods Sixty ASA Ⅰ -Ⅱ patients (39 male, 21 female), aged 18-56 yr, weighing 42-88 kg undergoing ENT, oral or facial plastic surgery were enrolled in this study. The patients were premedicated with atropine 0.01 mg?kg-1 . Anesthesia was induced with diazepam 0.1 mg?kg-1 , pethidine 1mg?kg-1 and droperidol 50?g?kg-1. Oro- or naso-tracheal intubation was accomplished under topical anesthesia. After intubation the patients received hydroxydione 2.5 g and fentanyl 5 ?g?kg-1 . The patients were mechanically ventilated. Anesthesia was maintained with inhalation of 50% N2O in O2 alone (groupⅠ) or combined with 0.6% isoflurane (group Ⅱ ) or 1.2% isoflurane (group Ⅲ ) . A bolus of rocuronium 0.6 mg?kg-1 was given during maintenance of anesthesia. Neuromuscular function was monitored using TOF response measured by accelerography (Biometer, Denmark). (1) Onset time (time from the end of injection to maximum depression of T1 ) , (2) the duration of T1 = 0, (3) time from the end of injection to recovery of T1 to 25% , 50% and 90% control, (4) recovery index (time from T, 25%-75%) were recorded. End-tidal isoflurane concentration was monitored.Results The onset time was significantly longer in group Ⅰ[ (1.7?0.2) min] than that in group Ⅱ[ (0.9?0.1) min] and groupⅢ[(0.8?0.1) min] ( P

AlM: To evaluate the clinical efficacy of canalicular intubation combined with external dacryocystorhinostomy ( ext-DCR ) for treatment of chronic dacryocystitis and upper lacrimal duct stenosis.
METHODS:Thirty-three patients (33 eyes) with chronic dacryocystitis and upper lacrimal duct stenosis who underwent canalicular intubation combined ext-DCR were retrospective analyzed. The silicon tube was indwelt for 6mo. All cases were re-examined 1wk;1, 3, 6, 9mo post-operation, flow of tears, pus excretion and lacrimal duct clearance were observed.
RESULTS: Clear lacrimal duct ratio was 100% in all cases during 1wk~6mo post-operation; Silicon tube was removed 6mo post-operation, 3mo after tube removal, rechecking reported 32 cases with clear lacrimal duct (97%) and 1 case with resistant duct (3%). Two cases ( 6%) with minor lacerations, no other complications were observed.
CONCLUSlON: Canalicular intubation combined ext-DCR is an effective treatment for chronic dacryocystitis and upper lacrimal duct stenosis.

Idiopathic thrombocytopenic purpura(ITP) as an autoimmune disease,is the most common clinical hemorrhagic disease.But,its pathogenesis is not completely clear yet.Low platelet count can easily repeate in chronic ITP patients,there are poor efficacy in refractory ITP patients,too.In recent years,a series of important progress on the pathogenesis of ITP had been made.In the humoral mechanism,there were significant progress on the emergence of autoantibodies;the theory on anomaly of the megakaryocyte quantity and quality caused by autoantibody were put forward.In the cellular mechanisms,the theory on reduction in the number of Tr cells,Co-stimulative signal and platelets directly dissolved by cytotoxicity T cells were put forward also.This review will be made to sum up the study progress on the pathogenesis of ITP.

Objective To explore the significance of the changes of serum B cell activating factor(BAFF) in children with idiopathic thrombocytopenic purpura(ITP).Methods The concentrations of BAFF were detected by ELISA in 42 children with ITP(test group) before and after treatment in the Children′s Hospital Affiliated to Chongqing Medical University from Apr.to Nov.2008,the blood platelet count(BPC) was detected also.And 40 children who were operated selectively were selected as control group.The variation of concentrations of BAFF were analyzed among children with ITP before,after treatment and control group.Moreover,the relationship between serum BAFF expression and BPC were analyzed by the Pearson test.Results The concentrations of serum BAFF were higher in children with ITP before treatment compared with that in control group [(0.943 3?0.583 5) ?g?L-1 vs(0.538 9?0.234 7) ?g?L-1,P0.05).There was negative correlation between serum BAFF expression and BPC(r=-0.305,P

Objective To review and analyse the CT distinguishing features of pulmonary cryptococcosis (PC)for improving the level of image diagnosis of the disease.Methods CT images and clinical details of 19 patients with biopsy or surgery pathology con-firmed PC were reviewed and analysed.Results Nodules or masses were presented in 10 cases,in which most casescases were nod-ules,lesions ranged in diameter from 1 cm to 2.5 cm.Multiple nodules were easy to fuse.Consolidation were presented in 6 cases,with high attenuation and clear border.3 cases were mixed type,with nodule,mass consolidation and ground glass attenuation.The lesions were mostly located in the inferior lobes(47%)and peripheral lung(68%).The features of pleural thickening,air bronchus sign,halo sign and cavitations were observed in 42%,36%,26%,21% of patients respectively.Conclusion CT findings of PC are diversity.The lesions are mostly located in the inferior and peripheral lung.Lesions are mild to moderate enhanced.Pleural thickening,air bronchus sign,halo sign,cavitations will be useful for the diagnosis.