A bacterium which can effectively degrade LAS (Linear Sodium Alkylbenzenesulfonate) was isolated from washing powder manufacturing effluent and was preliminarily identified as Corynebacterium jeikeium GZ6. The bacterium can degrade LAS up to till 700 mg/L, and the optimum pH, temperature and concentration of LAS are 7.0, 30℃ and 400 mg/L, respectively. The biodegradation rate can reach 98.7% after 24 hours'cultivation in the suitable conditions. Experiments also showed that some heavy metal ions such as Hg2+ , Co2+ , Cd2+ can differently inhibit the degradation of LAS.

Animals ; Cell Proliferation ; drug effects ; Cells, Cultured ; Comet Assay ; DNA Damage ; Dose-Response Relationship, Drug ; Lead ; toxicity ; Lymphocytes ; drug effects ; Male ; Mice ; Mice, Inbred Strains ; Spleen ; cytology ; drug effects ; Thymus Gland ; cytology ; drug effects

To optimize the immunization strategy against HIV-1, a DNA vaccine was combined with a recombinant vaccinia virus (rTV) vaccine and a protein vaccine. Immune responses against HIV-1 were detected in 30 female guinea pigs divided into six groups. Three groups of guinea pigs were primed with HIV-1 DNA vaccine three times, boosted with rTV at week 14, and then boosted with gp140 protein at intervals of 4, 8 or 12 weeks. Simultaneously, the other three groups of animals were primed with rTV vaccine once, and then boosted with gp140 after 4, 8 or 12 weeks. The HIV-1 specific binding antibody and neutralizing antibody, in addition to the relative affinity of these antibodies, were detected at different time points after the final administration of vaccine in each group. The DNA-rTV-gp140 immune regimen induced higher titers and affinity levels of HIV-1 gp120/gp140 antibodies and stronger V1V2-gp70 antibodies than the rTV-gp140 regimen. In the guinea pigs that underwent the DNA-rTV-gp140 regimen, the highest V1V2-gp70 antibody was induced in the 12-week-interval group. However, the avidity of antibodies was improved in the 4-week-interval group. Using the rTV-gp140 immunization strategy, guinea pigs boosted at 8 or 12 weeks after rTV priming elicited stronger humoral responses than those boosted at 4 weeks after priming. In conclusion, this study shows that the immunization strategy of HIV-1 DNA vaccine priming, followed by rTV and protein vaccine boosting, could strengthen the humoral response against HIV-1. Longer intervals were better to induce V1V2-gp70-specific antibodies, while shorter intervals were more beneficial to enhance the avidity of antibodies.
AIDS Vaccines ; administration & dosage ; genetics ; immunology ; Animals ; DNA, Viral ; administration & dosage ; genetics ; immunology ; Female ; Guinea Pigs ; HIV Infections ; immunology ; prevention & control ; virology ; HIV-1 ; genetics ; immunology ; Humans ; Immunization ; methods ; Vaccines, DNA ; administration & dosage ; genetics ; immunology ; Vaccinia virus ; genetics ; immunology ; env Gene Products, Human Immunodeficiency Virus ; administration & dosage ; genetics ; immunology

Objectives To summarize the clinical feature of severe adenovirus pneumonia (SAP) in children and further to improve prognosis and clinical diagnosis of SAP. Methods The clinical data of 213 children with SAP from June 2009 to June 2011 were retrospectively analyzed. Results Among 213 patients, 155 (72.8%) children were aged 6 months to 2 years, with a males to females ratio of 2.7∶1. The onset of 158 patients (74.2%) was in winter and spring. All patients had fever, 172 (80.8%) with high temperature of 39.1℃-41℃, 161 (75.6%) with a fever lasting more than 2 weeks. Two hundred and ifve (96.2%) patients had cough in the early stage, 120 (56.3%) with wheeze, 139 (65.3%) with moist rales and wheezing in the lung. Imaging ifndings in the preliminary stage of SAP showed that 63 patients (92.6%) had pulmonary interstitial changes;in critical stage, 80 patients (54.4%) had segmental consolidation and 33 (22.4%) with pleural effusion, 25 (17.0%) with pleuritis;in recovery phase, 50 patients (68.5%) showed absorption in segmental area of consolidation. All cases had complications, 175 (82.2%) with respiratory failure, including 10 (4.7%) with ARDS;among extrapulmonary complications, diseases of cardiovascular system (64.3%) and alimen-tary system (44.1%) were the most common ones, and the occurrence of myocarditis and diarrheal disease were the highest. Age, ARDS and more than two kinds of complications had adverse impact on the outcomes, and the difference was signiifcant (P<0.05). Conclusions SAP is a severe pneumonia with long duration of high fever, severe clinical manifestations with more complications. When SAP is suspected, it is recommended to complete etiological and chest radiographic examination for early diagnosis and treatment.

Objective To observe the clinical effect and complications of intravenous immunoglobulin(IVIG)in the treatment of severe adenovirus pneumonia(SAP)in children. Methods Clinical data of 210 hospitalized children with SAP from June 2009 to June 2011 were retrospectively analyzed. Patients were divided into IVIG group (109 cases) and control group (101 cases) to compare the therapeutic effects, duration of fever, length of stay in hospital, duration of mechanical ventila-tion, and complications between the two groups. Results There was no difference in the severity of illness on admission and un-derlying diseases between the two groups. Both groups were given antiviral, antibacterial and comprehensive supporting thera-py, and in the IVIG group IVIG 250-400mg/(kg.d) were administered for 3-5 d. The mean hospital stay and fever time of the IVIG group were significantly shortened comparing to that of the control group, and the time of mechanical ventilation on the IVIG group is less than that of the non-IVIG group. Incidence rate of pleural effusion, atelectas is, myocarditis and toxic enceph-alopathy in the IVIG group is lower than the control group, and the cure rateand effective therapy of the IVIG group is higher than control group, all of the difference was statistically significant (P<0.05). No adverse drug reaction was observed. Conclu-sions IVIG is safe and effective in the treatment of SAP in children.

Adult ; Coronary Aneurysm ; complications ; pathology ; Coronary Thrombosis ; complications ; Humans ; Male

Objective:To evaluate the safety and feasibility of the in-situ needle fenestration combined with the in vitro physician modified fenestration technique to reconstruct supra-aortic branches during thoracic endovascular aortic repair (TEVAR) for aortic arch lesions requiring landing at Z0 and Z1.Methods:From Nov 2017 to Dec 2019, eighteen patients who underwent both the in-situ needle fenestration and the in vitro physician modified fenestration techniques to extend the proximal landing zone to Z0 and Z1 during TEVAR were included in our study.Results:Sixteen patients underwent in vitro physician modified fenestration ,two patients underwent in vitro physician modified fenestration to reconstruct both the left common carotid artery and the innominate artery. All eighteen patients received in-situ needle fenestration to preserve the left subclavian artery. Supra aortic branches were preserved in all patients (38/38, 100%). There was no Type Ⅰ endoleak. Type Ⅱ endoleak was found in four paitnets (4/18). Type Ⅲ endoleak occurred in one patient (1/18). Type Ⅳ endoleak in four patients (4/18). Type Ⅲ endoleak needed open aortic arch repair 6 months later. The median follow-up time was 12 months. One (1/18) died in 12 months and the other patients were doing well.Conclusions:The joint application of the in-situ needle fenestration and the in vitro physician modified fenestration to reconstruct supra-aortic branches during TEVAR for aortic arch pathologies requiring landing at Z0 and Z1 was satisfactory.

Objective To explore the effects of coriafia lactone (CL)-activated astrocytes (Ast) conditioned medium (ACM) on the expressions of glutamate (Glu) and GluR2 in the brain of rat. Methods Asts of hippocampus were cultured according to the McCarthy and DeVellis's method, and then the ACM was collected. Forty-eight male adult Sprague-Dawley (SD) rats were randomly divided into the control group (n=16) and the CL group (n=32). Rats in the control group were administered 10 μL ACM I. C. V., which was not added any stimulating substance. Rats of the CL group were injected I. C. V. 10 μL CL-activated ACM. The rats in both groups were subdivided into post-injection 2,4,8,12h subgroups, 4 in each subgroup in the control group and 8 in each subgroup in the CL group. The behaviors of the rats were observed and the expressions of Glu and GluR2 in the cerebral cortex and hippocampus were detected with immunohistochemistry and immunofluorescence. The content of GluR2 was tested with Western blot. Results The rats injected with CL-activated ACM showed seizure activities, whereas the rats of the control group showed no seizure activities. The expression of Glu in cerebral cortex and hippocampus in the brains injected with CL-activated ACM was increased compared with the control group at 4h (P<0.05), but the expression of GluR2 was attenuated compared with the control group at 4h(P<0.05). The results of GluR2 in the cerebral cortex and hippocampus detected with Western blot were different significantly with control group (P<0.05). Conclusion CL-activated ACM can enhance the expression of Glu and reduce the expression of GluR2 in the brain of rat, resulting in the activation of AMPA pathway and the Ca2+ influx, and then induce seizure activities.

PURPOSE: The purpose of this study was to validate the Actiwatch with behaviorally determined sleepe-wake state in preterm infants and to explore the influence of postmenstrual age on the accuracy of Actiwatch. METHODS: A prospective and comparative research design was used. Twenty-four preterm infants with postmenstrual age ranging from 28-38 weeks were studied. The infants were studied for 2 hours between two feedings. Infant's sleep and wake state was measured every 30 seconds using Actiwatch and the Anderson Behavioral State Scale simultaneously. RESULTS: Actiwatch demonstrated high agreement, sensitivity, and predictivity of sleep state, when validated with the Anderson Behavioral State Scale at the setting of high and automatic activity thresholds, and was not influenced by the infant's postmenstrual age. However, lower specificity and predictivity were found in the wake state, and influenced by postmenstrual age. CONCLUSION: Results of this study suggest that high activity thresholds are the most accurate for determining sleep state in preterm infants, and health care professionals must take the limitations into consideration while using the Actiwatch to assess wake states.
Delivery of Health Care ; Humans ; Infant ; Infant, Newborn ; Infant, Premature* ; Prospective Studies ; Research Design ; Sensitivity and Specificity

OBJECTIVETo investigate the influences of ultrafiltration and alcohol sedimentation on protective effects of Radix Astragali and Radix Hedyseri against rat's cerebral ischemia.

METHODSUsing dexamethasone (im.) and ligating common carotid artery, the rat stasis model combined transient cerebral ischemia was established to evaluate the effects of the ultrafiltration and alcohol sedimentation through detecting antioxidant system and other indexes in brain tissue.

RESULTSThe results showed that the 6 g/kg water extract(crude drug), ultrafiltration and alcohol sedimentation of Radix Astragali and Radix Hedyseri could upgrade adenosine-triphosphate (ATP), superoxide dismutase (SOD) and catalase (CAT), and degrade malondialdehyde(MDA) and water content of brain tissue in rat stasis model combined transient cerebral ischemia, the water extract and ultrafiltration of them could degrade lactic acid (LD) of brain tissue, and the effects of alcohol sedimentation of Radix Astragali and Radix Hedyseri become weaker than water extract of them.

CONCLUSIONThe water extract, ultrafiltration and alcohol sedimentation of Radix Astragali and Radix Hedyseri have some protective effects on cerebral ischemia in rats, the effective differences of the extract through the same extraction method are not remarkable, and alcohol precipitation method has obvious influences effect on Radix Astragali and Radix Hedyseri.

Alcohols ; chemistry ; Animals ; Antioxidants ; metabolism ; Astragalus Plant ; chemistry ; Brain ; drug effects ; Catalase ; metabolism ; Cerebral Infarction ; drug therapy ; Drugs, Chinese Herbal ; pharmacology ; Malondialdehyde ; metabolism ; Plant Roots ; chemistry ; Rats ; Superoxide Dismutase ; metabolism ; Ultrafiltration