More than ten bacteriophage of E.coli were isolated from the soil and the dung of the fowl-run, then three of named bacteriophage A, C, D which lysis E.coli virulently were selected to investigate biological characterizations. The results showed that high activities were obtained after the phages incubated at 50℃ for 1 h or 60℃ for 30 min. The phages could be alive at the range of pH from 4 to 12, Ca 2+ or Mg 2+ added to the medium could stimulate the lysis of phages. However, the formation of the plaque could be inhibited obviously by adding sodium citrate to the medium.

OBJECTIVETo evaluate the effectiveness of manual therapy and traction for lumbar disc herniation and analyze the current status of this kind of randomized clinical trial (RCT).

METHODSDatabase of CNKI, VIP, WANFANG, PubMed and OVID were searched. Some relevant journals were manually retrieved. A total of 2 874 literatures on manual therapy and traction for lumbar disc herniation were collected, of which 17 articles met the inclusion criteria. The Jadad score scale was used to evaluate the quality,and RevMan5.0 was used for meta-analysis of literatures.

RESULTSThe results of the meta-analysis of all trials involved were as followed:the combined effect of the effective rate was RR = 1.10, 95% CI [1.06, 1.14], the combined effect of the cure rate was RR = 1.36, 95% CI [1.21,1.52], the combined effect of the VAS was RR = 1.37, 95% CI [1.28, 1.45], the combined effect of the JOA was RR = 4.75, 95% CI [4.40, 5.09].

CONCLUSIONThe overall quality of the current RCT researches about manual therapy for lumbar disc herniation was lower,and did not support the conclusion that manual therapy was more effective than traction for lumbar disc herniation.

Humans ; Intervertebral Disc Displacement ; surgery ; therapy ; Lumbar Vertebrae ; surgery ; Musculoskeletal Manipulations ; methods ; Randomized Controlled Trials as Topic ; Traction ; methods

The contamination of extrinsic harmful contaminants including mycotoxins, heavy metals and pesticides, etc, brings serious risks to traditional Chinese medicines (TCMs), further to human health. Due to their unique photoluminescence, chemiluminescence, electrochemical and electrochemiluminescence properties, semiconductor quantum dots (QDs) nanoparticles are widely used to immobilize bioprobes and biosensors, etc. In this review, the luminescence characteristics and specific ligands of QDs probles which are used to determine contaminants were summed up. Then, the applications of QDs-coated novel probes in the determination of mycotoxins, heavy metals and pesticides were discussed in detail. In addition, the contamination levels and characteristics of extrinsic harmful residues in TCMs were investigated. Further, the maximum levels of those contaminants in TCMs were compared with those set by various countries. Finally, the future development trends and problems of QDs-coated probes in the determination of those extrinsic residues in TCMs were prospected.
Drug Contamination ; prevention & control ; Humans ; Medicine, Chinese Traditional ; methods ; Nanotechnology ; instrumentation ; methods ; Quantum Dots ; Safety ; Time Factors

Objective:To investigate the effects of shikonin on osteoclastogenesis in vitro and amelioration of bone loss in ovariectomized-induced osteoporosis in mouse model.Methods:The optimal concentration of shikonin treating were evaluated in vitro depending on its effect on the viability of C57BL/6J mouse bone-marrow-derived macrophages by CCK-8 method.To establish the osteoclastogenesis cell model,macrophages were cultured with RANKL and M-CSF treatment,and TRAP staining was used to observe the generation of osteoclasts after treating with different concentration of shikonin solution.Expressions of osteoclast marker genes,including TRAP,c-Fos and NFATclwere detected with real-time PCR.Fifthteen mice were randomly allocated into sham operation group,ovariectomized model group and shikonin treatment group.After the modeling,mice in treatment group were received the intraperitoneal injection of shikonin,while the other two groups treated with normal saline.After thirty days treatments,all animals' tibias were dissected for micro-CT analysis.Results:①The macrophages viability was significantly inhibited when the concentration of shikonin was higher than 250 nmol/(P＜0.01).②The osteoclastogenesis was significantly suppressed by differemt dose of shikonin(P＜0.01).③ The expression of the osteoclastic marker genes (TRAP,c-Fos and NFATc 1) were suppressed by addition of shikonin comparing to control group (P＜0.01).④ Shikonin effectively prevented ovariectomy-induced bone loss (P＜0.05).Conclusion:Shikonin suppresses osteoclastogenesis in vitro and ameliorates ovariectomized-induced osteoporosis in mouse model.

The present paper outlined pesticide registration status for traditional Chinese medicines (TCMs) and summarized the characteristics of pesticide contamination in different regions of some widely used TCMs by retrieving last 10 years' literatures. At present, the problems of pesticide residues for TCM include less pesticide registrations, widespread high-residue organochlorine pesticides contamination, pesticide abuse, irregular GAP bases and imperfect pesticide limit standards, etc. According to the current situation, we should adopt some control measures to strengthen the quality control of TCMs so as to ensure the safety of TCMs and related products.
Animals ; China ; Drug Contamination ; prevention & control ; statistics & numerical data ; Humans ; Medicine, Chinese Traditional ; methods ; Pesticide Residues ; analysis ; Registries

Objective To compare the difference on health statistical survey system between China and United States of American.Methods Four aspects in statistical agencies,legislation,survey items and health statistics information were compared.Results The system in China has its own characteristics,but it also faced with many challenges,including the relatively slow transfer and exchange of statistical information,the lack of legislation on data dissemination and sharing,the insufficient diversification of survey items and survey content.Conclusion The statistics information center of Ministry of Health should strengthen the management and coordination to ensure the data collection timely and accurately.The policies should be strengthened to protect data privacy and improve data dissemination.

Objective To analyze the behavioral and psychological symptoms in patients with vascular dementia (VaD),investigate the relationship between behavioral and psychological symptoms and such correlative factors as cognitive disturbance,age,education level of the patients,and explore the internal relations among Neuropsychiatric Inventory (NPI) items. Methods NPI and Mini-Mental State Examination (MMSE) were introduced to assess the behavioral and psychological symptoms in 120patients with VaD and 61 healthy elders (control group). Results The VaD patient group had significantly higher scores in 8 items,including delusion,hallucination,agitation,dysphoria,apathy,irritability,aberrant motor and appetite/eating changes in the NPI list,as compared with the control group (P＜0.05),with the points ranked from the highest by dysphoria,apathy and irritability.Among the 8 items in the NPI list, delusion, apathy and aberrant motor were significantly correlated with cognitive disturbance; and aberrant motor was correlated with age and education level.Besides that,NPI factor analysis showed that 3 behavioral sub-syndromes,psychosis,mood disorder and behavioral disturbance,exited. Conclusion Behavioral and psychological symptoms were common in VaD patients,and the frequency and severity of appearing of behavioral and psychological symptoms were correlated with cognitive disturbance,age,and education level of different degrees; in addition,each sub-syndrome may have common pathophysiologic mechanism.

Alanine Transaminase ; blood ; Animals ; Anti-Inflammatory Agents ; pharmacology ; therapeutic use ; Aspartate Aminotransferases ; blood ; Dietary Fats ; administration & dosage ; Disease Models, Animal ; Drugs, Chinese Herbal ; administration & dosage ; pharmacology ; therapeutic use ; Fatty Liver ; drug therapy ; etiology ; pathology ; Glycyrrhizic Acid ; administration & dosage ; pharmacology ; therapeutic use ; Injections ; Liposomes ; Liver ; drug effects ; pathology ; Liver Cirrhosis ; drug therapy ; etiology ; pathology ; Male ; Phenanthrolines ; administration & dosage ; pharmacology ; therapeutic use ; Random Allocation ; Rats ; Rats, Sprague-Dawley ; Treatment Outcome

OBJECTIVETo develop a coexpression plasmid which expressing envelope protein and nucleoprotein of hepatitis B virus and know of its expressing efficiency.

METHODSThe plasmid coexpressing envelope protein and nucleoprotein of hepatitis B virus under the CMV promoter respectively was constructed by gene recombination. Cellular expression was assessed by ELISA.

RESULTSMultiple cloning site was inserted into expression vector contain hepatitis B virus PreS2-S gene. And expression unit containing hepatitis B virus PreC-C was cloned into it. HBsAg and HBeAg was detected both in the culture supernatant and in the cells.

CONCLUSIONThe coexpressing plasmid was constructed successfully and it can express effectively in vitro. This has provided a basis for further research of the therapeutic HBV DNA vaccine.

Cloning, Molecular ; Gene Expression ; Genetic Vectors ; genetics ; metabolism ; Hep G2 Cells ; Hepatitis B Core Antigens ; genetics ; metabolism ; Hepatitis B Surface Antigens ; genetics ; metabolism ; Hepatitis B virus ; genetics ; Humans

OBJECTIVETo evaluate the associations between periodontal conditions, serum level of interleukin-1beta (IL-1beta) and delivery outcomes in pregnant women with a diagnosis of threatened premature labor(TPL).

METHODSEighty systemically healthy pregnant women were enrolled in the study. The case group was composed of 40 pregnant women hospitalized with the diagnosis of TPL (TPL group) and the control group was composed of 40 normal pregnant women (Non-TPL group). Periodontal examinations included assessments of plaque index (PLI), clinical attachment loss (CAL), probing depth (PD), bleeding index (BI) and the percent of periodontitis sites (PD >3 mm, CAL > or =2 mm). The serum level of IL-1beta was determined using commercially available enzyme-linked immunoassays.

RESULTS(1) Fourteen of forty subjects of TPL group delivered premature labor infants (TPL-TB group), and twenty-six subjects delivered natural labor infants (TPL-PB group). No infants were delivered as premature labor infants in non-TPL group. There were significant differences in gestational age at delivery, birth weight, PLI, percentage of periodontitis sites and IL-1beta levels between the non-TPL group and TPL group or between the TPL-TB group and TPL-PB group (P < 0.05). (Significant negative correlation were observed between the gestational age at delivery and percentage of periodontitis sites as well as serum IL-1beta levels (P < 0.05). And significant positive correlation were observed between percentage of periodontitis site and serum IL-1beta levels (P < 0.05).

CONCLUSIONPeriodontal inflammation might be one of the pathogenesis of preterm birth.

Adult ; Dental Plaque Index ; Female ; Humans ; Infant, Newborn ; Interleukin-1beta ; Periodontitis ; Pilot Projects ; Pregnancy ; Premature Birth