It is common in bacterial genomes of the integration of prophages. As an important participant of the vital movement of their hosts, prophages affect closely the biological properties of the hosts. Therefore, if we want to comprehend a bacterial genome fully, it is essential to recognize and understand accurately prophages in it. This article is a compendious review about the classification, distribution, identification, evolution of prophages and the interaction with their hosts.

Bronchogenic Cyst ; diagnosis ; Diagnostic Errors ; Goiter ; Goiter, Nodular ; diagnosis ; Humans ; Neck

Carcinoma, Adenoid Cystic ; diagnosis ; surgery ; Endoscopy ; Humans ; Neoplasm Recurrence, Local ; diagnosis ; Nose ; surgery ; Nose Neoplasms ; diagnosis

After testing the resistance of Streptomycin to the strain NS-41-80 which is the Meilingmycin producer- Streptomyces nanchangensis , a lot of streptomycin-resistant ( str ) mutants were screened after the spores regenerated on the lethal media when they were treated with 4 different dosage of super-mutagent EMS. We have abtained the high-yield strain 80-5. 11-221 from these str mutants which only produces Meilingmycin and no Nanchangmycin in the rotation-flask experiments. The productivity of 80-5. 11-221 is 1521?g/mL 77. 9% higher than CK's 855?g/mL. After the shake flask fermentation experiment of 80-5. 11-221 for six generations, the productivity of F 2 and F 3 is stable and the productivity of F 4?F 5?F 6 decreases hastily with the increment of generations. It was showed that the chemical-resistance mutation of the strains had closely relation with yield mutation and the EMS dosage of the yield mutation was higher than the resistance-chemical mutation's through the statistical analysis between the dosage of mutation and the chemical-resistance mutational frequency?the variate capacity of the mutants' yield. A model of the resistance-chemical mutational labelling rational selection of the strain producing Meilingmycin was established.

Objective To study the expression of signal transducers and activators of transcription 3(STAT3) in airway epithelial cells of asthmatic mouse model and its association with airway remodeling,explore the role of signal-transduction pathway in airway remodeling.Methods Thirty Balb/c mice were randomly divided into normal control group(n=10),asthma without intervention group(n=10) and AG490 intervention group(n=10).The mice were sensitized with ovalbumin to establish the asthmatic model.The histological changes were evaluated by HE staining,total brochial wall thickness(Wat)and smooth muscle thickness(Wam) were measured by image analysis system,the percentages of collagen deposition were detected by Masson′s trichrome staining,the expression of STAT3 in airway were detected by immunohistochemistry technique;lung tissue extracts were analyzed for phosphorylation of STAT3(p-STAT3)by Western blot.SPSS 13.0 software was used to analyze the data.Results 1.The histological changes including airway thickness,airway smooth cell proliferation and excessive collagen deposition in subepithelial aera were found under light microscope in asthmatic mice.2.The level of STAT3 and p-STAT3 in asthma without intervention group were significantly higher than those in normal control group(Pa

Objective To observe the effects of inhaled budesonide (BUD) in early phase on the airway inflammation in asthmatic mouse,and its effects on the IL-6/signal transducers and activators of transcription 3(IL-6/STAT3 )signaling pathway in airway,explore the therapeutic target of BUD.Methods Forty Balb/c mice were randomly divided into control group(n=10),asthma group(n=10),BUD group(n=10) and AG490 group(n=10).The mice were sensitized with ovalbumin to establish the asthmatic model.The histological changes were evaluated by HE staining.The levels of IL-4,IL-5 and IL-6 in bronchoalveolar lavage fluid (BALF) were measured by enzyme-linked immunosorbent assay.Lung tissue extracts were analyzed for total STAT3 and phospho-STAT3(p-STAT3) by Western blot.Results 1.The levels of inflammatory cells,EOS%, IL-4,IL-5 and IL-6 levels in the BALF in BUD group were significantly lower than those in asthma group (Pa0.05).Conclusions Inhaled corticosteroid can apparently ameliorate airway inflammation in early phase in asthmatic mouse model,and it can downregulate the expressions of IL-6 and STAT3,inhibit the signal-transduction pathway of STAT3.The IL-6 /STAT3 signaling pathway of airway may be one of the potential therapeutic targets of inhaled corticosteroid.

AlM: To observe the treatment efficacy of eyelid herpeszoster with external use ganciclovir ophthalmic gel.METHODS:A total of 77 patients were randomly divided into treatment group and control group. ln the treatment group, ganciclovir ophthalmic gel was topical coated on the basis of antiviral drugs, while the control group was coated with conventional acyclovir ointment and antiviral treatment.
RESULTS: The cure rate was 95% in the treatment group, and the control group was 83% after 10d treatment. The difference was significant.
CONCLUSlON: The efficacy of ganciclovir ophthalmic gel treated eyelid herpes zoster is obvious.

Objective To study the prevalence of dilated cardiomyopathy and the quasi-latent Keshan disease in villages of non-endemic areas of six Keshan disease endemic provinces in China,and to provide reference values for proposing a elimination standard of keshan disease.Methods County,township and village was selected as the study area by using multi-stage sampling in non-Keshan disease areas of Sichuan,Shanxi,Henan,Shandong and in Keshan disease areas of Chongqing and Yunnan.In each county two townships were selected and in each township one village was chosen.The residents of the villages sampled were surveyed by questionnaire,physical examination,electrocardiogram (ECG) and cardiac echocardiography.Suspected dilated cardiomyopathy patients had chest X-ray.Dilated cardiomyopathy patients were diagnosed according to the criteria proposed by 2006 World Health Organization/International Society and Federation of Cardiology (WHO/ISFC).Results The number of investigated villages was 126 and 54 139 people were surveyed by questionnaire and clinical examination.Ten patients with dilated cardiomyopathy were found,the prevalence was 18.47/100 000(10/54 139),and its 95％ confidence interval was 18.11/100 000-18.84/100 000.A total of 197 patients with quasi-latent Keshan disease were found,the prevalence was 363.88/100 000 (197/54 139),and its 95％ confidence interval was 362.27/100 000-365.49/ 100 000.The prevalence of male quasi-latent Keshan disease was 353.34/100 000(83/23 490) and of female was 372.07/100 000(114/30 639).The number of subjects with normal and abnormal ECG was 45 222 and 8917,respectively,and the rate of abnormal ECG was 16.47％.The highest rate of abnormal ECG was 38.28％ (1585/4141) in Chongqing.The lowest rate of abnormal ECG was 8.10％ (1175/14 507) in Yunnan.The highest detection rate of T wave and ST segment changes was 4.67％ (2528/54 139).In abnormal ECG indices,the detection rate of Henan,Shandong and Chongqing was higher,and all of them were higher than 10.0％.Conclusions We suggest that the reference baselines of dilated cardiomyopathy and quasi-latent Keshan disease in Keshan disease areas of the six provinces in the south of China be 18.47/100 000 and 363.88/100 000,respectively.

Animals ; Animals, Newborn ; Brain ; drug effects ; metabolism ; pathology ; Disease Models, Animal ; Excitatory Amino Acid Antagonists ; pharmacology ; therapeutic use ; Female ; Hypoxia-Ischemia, Brain ; drug therapy ; metabolism ; Ketamine ; pharmacology ; therapeutic use ; Male ; Random Allocation ; Rats ; Rats, Sprague-Dawley ; Treatment Outcome

OBJECTIVETo compare the efficacy on vertebrobasilar insufficiency (VBI) between auricular acupuncture therapy and oral administration of medicine.

METHODSSixty patients of VBI were randomized into an auricular acupuncture therapy group and a medicine group, 30 cases in each one. In the auricular acupuncture group, acupuncture was applied bilaterally to gan (CO12) and jiejie (HX8) on the ears and needles were retained for 15 min. After needle withdrawal, the vaccariae semen were fixed with plaster at naogan (AT3, 4i), zhen (AT3), jing (AH12), shen (CO10) and pi (CO13) on the ears. In the medicine group, flunarizine hydrochloride capsules (Sibelium), 5mg were prescribed for oral administration, once every night. The treatment lasted continuously for 2 weeks (14 days) in the two groups. In 2 weeks, the clinical efficacy was assessed and the transcranial doppler (TCD) examination was performed.

RESULTSAfter treatment, the symptom scores were all apparently reduced in the patients of the two groups (P < 0.01, P < 0.05). Compared with the medicine group, the reduced score was much more obvious in the auricular acupuncture group (P < 0.05), indicating the significant difference. After treatment, with TCD examination, the blood velocity was increased to different degrees in the patients of low velocity type in the auricular acupuncture group and the medicine group; that was reduced to different degrees in the patients of high velocity type in the auricular acupuncture group and the medicine group. All of them were different significantly as compared with those before treatment (all P < 0.05). But the difference was not significant between the two groups (both P > 0.05). In comparison of clinical efficacy between the two groups, the effective rate was 93.3% (28/30) in the acupuncture group and better than 76.7% (23/30) in the medicine group, indicating the significant difference in comparison (P < 0.05).

CONCLUSIONThe auricular acupuncture therapy achieves the definite efficacy on VBI and the efficacy is better than flunarizine hydrochloride capsules.

Acupuncture Points ; Acupuncture, Ear ; Adult ; Aged ; Female ; Humans ; Male ; Middle Aged ; Treatment Outcome ; Vertebrobasilar Insufficiency ; therapy