OBJECTIVE: To study the antimicrobial effect of 11 kinds of oral Chinese patent medicines and to establish microbial limit test method for them. METHODS: Common method and culture medium dilution method and sticked filter membrane method were used to do the recovery test in order to validate the scientificity and feasibility of established method. RESULTS: Danqi piantan capsule showed strong inhibition effect on Staphylococcus aureus and Bacillus subtilis. Xinshuning tablet, Fuzheng mixture, Shenkangning mixture, Qingshen xiaodu oral liquid had antimicrobial effect on Staphylococcus aureus to some extent. Banlangen granule had antimicrobial effect on Bacillus subtilis. The effect can be eliminated by culture medium dilution method. CONCLUSION: The common method can be used for the microbial limit test of Jiaoou capsule, Zhike ningsou capsule, Rongdanshi granule, Sanjie mingmu capsule, Jiangzhi ruanmai tablet. Dilution method can be used for the microbial limit test of Xinshuning tablet, Fuzheng mixture, Shenkangning mixture, Qingshen xiaodu oral liquid, Banlangen granule, Danqi piantan capsule. The common method is suitable for all kinds of specified microorganisms.

Adult ; China ; Female ; Fertilization in Vitro ; methods ; Humans ; Infertility ; epidemiology ; etiology ; therapy ; Male

Objective To evaluate the value of echocardiography in diagnosing infective endocarditis (IE) in children. Methods The shape, size, echogenicity, distribution of vegetations and valvular function of the heart were observed by transthoracic echocardiography (TTE) in 30 patients with suspected IE. We correlated TTE ifndings with the results of hemoculture and serologic test. Results Vegetations were observed in all patients by echocardiography:seven patients with tricuspid valve vegetations, two with mitral valve vegetations, three with pulmonary valve vegetations, three with main pulmonary artery vegetations, three with aortic valve vegetations, two with aortic valve abscess, and two with vegetations in right atrium. After anti-infection therapy, the size of vegetations in iffteen patients became smaller and the less echogenic than before. Vegetations disappeared in two patients. Vegetation was recurrent repeatedly in one case. Ten patients recovered after operation. Two severe cases died. Five patients underwent TTE again one week after the previous negative TTE. Of them, echocardiography demonstrated vegetations in three cases. However, no vegetations were found in rest two cases because antibiotics had been used at early stage. In addition, echocardiography demonstrated one patient with mitral valve vegetation. But the lesion was ifnally conifrmed to be operating suture. The sensitivity and specificity of TTE in detecting vegetations were 88.0% and 80.0%, respectively. Blood cultures were positive in twenty-seven cases and were negative in three cases. Conclusions The early diagnosis of IE is important to improve patient′s prognosis. It takes a long time in organism cultivation before achieving the clinical diagnosis. TTE can help obtain an early diagnosis stage of IE, and provide the assessment of size and location of vegetation. It plays an important role in treatment and prognosis prediction.

ObjectiveTo explore the methods of low temperature preservation for alginate-polylysine-alginate (APA) microcapsules.MethodsAPA microcapsules were prepared with static electricity, and underwent hypothermal treatment respectively through methods of program control, gradient by icebox and put in liquid nitrogen directly, finally preserved in liquid nitrogen. The form and permeability of APA microcapsules were checked after rewarming.ResultsThe rates of integrity, crenation and damage were (91.2±1.57)%, (3.1±0.81)% and (5.7± 2.62 )% in the program control group; (85.3±1.42)%, (5.2±0.74)% and (9.5± 3.81 )% in the gradient by icebox group; (14.5±1.57)%, (84.1±3.47)% and (1.4±2.62)% in the directly put in liquid nitrogen group. The membrane permeability of full APA microcapsules after frozen and reworming was not changed obviously.ConclusionThe program control method can preferably preserve APA microcapsules at low temperature and keep them having normal form and permeability.

OBJECTIVETo observe the clinical effect of electric stimulation of long-term retaining needle on analgesia after laparoscopic cholecystectomy (LC) and the impacts on the post-surgical flatus time.

METHODSUnder static absorptive composite general anesthesia, 90 cases of LC were randomized into three groups, 30 cases in each one. In the control group, the analgesia was not applied after LC. In the analgesia-pumper group, the patient controlled intravenous analgesia (PCIA) was used. In the needle-retaining group, the electric acupuncture stimulator was used. The needles were inserted transversely at Riyue (GB 24), Qichong (ST 30) and Yanglingquan (GB 34) and fixed with sterile sticker. Separately, in 8 h and 24 h after surgery, the electric acupuncture stimulation with disperse-dense wave, 2 Hz/100 Hz frequency was applied continuously for 30 min. Visual analogue scale (VAS), adverse reactions such as vomiting and nausea and the postoperative flatus time in 2, 4, 8, 12, 24 and 36 h after surgery were observed and recorded in the three groups.

RESULTSIn 2, 4, 8, 12 and 24 h after surgery, VAS scores in the needle-retaining group and the analgesia-pumper group were all lower than those in the control group (P < 0.05, P < 0.01). The analgesia effect at the above time points in the needle-retaining group was better than that in the analgesia-pumper group (all P < 0.05). There was not adverse reaction in the needle-retaining group. But there were 3 cases of somnolence, 6 cases of nausea and 3 cases of vomiting in the analgesia-pumper group, and 2 cases of nausea and 1 case of vomiting in the control group. The flatus time was quite earlier in the needle-retaining group as compared with the other two groups [(14.77 +/- 4.99) h vs (18.50 +/- 4.22) h, P < 0.01; (14.77 +/- 4.99) h vs (18.17 +/- 4.69) h, P < 0.05].

CONCLUSIONThe electric stimulation of long-term retaining needle is safe and effective in analgesia after LC. It avoids the adverse reactions of analgesics and promotes postoperative flatus.

Acupuncture Analgesia ; instrumentation ; Adult ; Aged ; Cholecystectomy, Laparoscopic ; adverse effects ; Electroacupuncture ; instrumentation ; Female ; Humans ; Male ; Middle Aged ; Pain Management ; Pain, Postoperative ; etiology ; therapy

A BBB co-culture cell model consisting of rat brain microvascular endothelial cells (BMEC) and astrocytes (AS) was established to study the effect of Angelica dahurica coumarins on the transport behavior of puerarin across blood-brain barrier (BBB) in vitro and in vivo. The barrier function of this model was evaluated by measuring the transendothelial resistance, phenol red permeability and BBB related protein expression. The permeability assay and western blot methods were performed to study the effects of Angelica dahurica coumarins on the BBB permeability and the expression of BBB related protein. The animal experiment protocols in this study were approved by the Animal Ethics Committee of Xi'an Jiaotong University (Animal Ethics No.: 2021-1329). The results showed that the established BMEC/AS co-culture model could be used to evaluate drug transport across BBB in vitro. After combined with Angelica dahurica coumarins, the transport capacity of puerarin was significantly increased in vitro and in vivo. Additionally, Angelica dahurica coumarins enhanced BBB permeability and inhibited the protein expression of P-glycoprotein (P-gp), zonula occludens-1 (ZO-1) and occludin. Angelica dahurica coumarins might increase BBB permeability by inhibiting the expression of P-gp and tight junction protein, thereby increasing the content of puerarin in brain tissue.

OBJECTIVETo evaluate in vivo the remineralization containing trace elements.

METHODSThe volunteers were selected by pre-designed criteria of adopting and eliminating. Caries-like lesions were prepared in the enamel of extracted human premolars with the use of demineralizing solution. Sections of the normal and lesion enamel (approximately 2 mm x 2 mm) were prepared, with the cut surfaces protected by nail varnish. 2 enamel specimens were mounted in a removable appliance. By measuring lesion parameters (area, total and average dye fluorescence) on a tooth with confocal laser scanning microscopy (CLSM), the effect of remineralization was assessed. Specimens were cut and stained with a fluorescent dye (0.1 mmol/L rhodamine B) for 1 h and analyzed using CLSM.

RESULTSCLSM detected significantly greater remineralization (P < 0.05) in the specimens treated with the trace elements fluoride-containing solution and only containing fluoride (P < 0.05), especially more obvious difference was shown upon remineralized solution with trace elements, which means it produced a greater remineralization. CLSM data of remineralized solution with trace elements were showed: delta Z vs. Area = -50.4 +/- 8.1; delta Z vs. TF = -27.8 +/- 3.8; delta Z vs. AF = -91.5 +/- 8.9.

CONCLUSIONSThe ability of remineralization of the new solution is better than that only containing fluoride in in vivo study. It can potentially prevent initiation of caries. This study provides not only the theoretical foundation for clinical application, but also shows a new kind of experimental method in the study of demineralization and remineralization.

Dental Caries ; drug therapy ; metabolism ; Dental Enamel ; drug effects ; metabolism ; Fluorides ; pharmacology ; Humans ; Microscopy, Confocal ; Tooth Remineralization ; methods ; Trace Elements ; pharmacology

OBJECTIVETo observe the role of NB127914, a CRF R1 receptor antagonist, in the regulation of neonatal sleep/wake cycle.

METHODSRat pups were surgically implanted with electrodes at postnatal day(PN) 13. At PN 14, 6 hours polysomnographic recording data were continuously collected before and after administration of various doses of NBI 27914, atropine and the same amount of saline.

RESULTSCompared with baseline, rapid eye movement (REM) sleep was significantly reduced and was replaced primarily by non-REM (NREM) sleep in all groups treated with NBI, but not with dimethyl sulfoxide/saline. Atropine suppressed REM sleep significantly and increased wakefulness simultaneously.

CONCLUSIONBlockage of corticotropin-releasing factor (CRF) R1 receptors deprives neonatal rat REM sleep.

Aniline Compounds ; pharmacology ; Animals ; Female ; Male ; Polysomnography ; Pyrimidines ; pharmacology ; Rats ; Rats, Sprague-Dawley ; Receptors, Corticotropin-Releasing Hormone ; antagonists & inhibitors ; Sleep, REM ; drug effects ; physiology ; Wakefulness ; drug effects ; physiology

The relationship of HLA-A, -Cw alleles on HIV infection and AIDS disease progression in the Chinese Yi ethnic group of Sichuan province were investigated. The genetic polymorphisms of HLA-A, -Cw alleles of 102 unrelated healthy Chinese Yi ethnic individuals, 68 HIV-1 infected and 21 HIV positive long-time survivors were typed by PCR-SSP assay. Statistic signifiance was determined by the χ2 test with the SPSS software. No significant differences were observed between the HLA-A, -Cw alleles of the 68 HIV-1 infected and 102 non-infected Chinese Yi control individuals. Whereas the prevalence of A*3601,Cw*14(01-03)and Cw*0304 was significantly higher in 21 long time survivors compared with 102 healthy controls with P values of 0.016, 0.016 and 0.000 by χ2 or the Fisher exact test respectively. The result implies that A*3601,Cw*14(01-03) and Cw*0304 may be associated with slow AIDS disease progression in the Chinese Yi ethnic group, further studies on this association may yield insight on the pathogenesis of HIV-1 infection.

Carcinoma, Hepatocellular ; microbiology ; pathology ; Cell Line, Tumor ; Cyclin D1 ; biosynthesis ; genetics ; Helicobacter pylori ; physiology ; Humans ; Liver Neoplasms ; microbiology ; pathology ; Proliferating Cell Nuclear Antigen ; biosynthesis ; genetics ; RNA, Messenger ; biosynthesis ; genetics