1.Screening of Sponge Stelletta tennui Associated Anti-microbial Bacteria and Their Synergistic Effects
Microbiology 1992;0(04):-
A total of 104 marine bacterial strains were isolated from Stelletta tennui around Sanya area of South China Sea by dilution-plate method and were screened for anti-microbial activity on Escherichia coli, Staphylococcus aureu, Pseudomonas fluorescens, Bacillus subtilis, Aspergillus niger, Candida albicans and Pacecilomyces variotii by agar diffusion, paper disc diffusion assay and cell concentration counts methods. It was found that 23 strains, which are 22.2% of the total isolated strains, have anti-microbial activities. Among the 23 strains, A05, A08, A72 and A75 were morphologically, physiologically and biochemically characterized and identified to be the genus Bacillus. At the same time, it was proved that there are positive and negative synergistic effects between or among active strains, e.g., as for A72-75 combination, an obvious enhanced anti-microbial activities on inhibiting Candida albicans and Pseudomomas fluorescens growth was observed than A72 or A75.
2.Clinical Study on 38 Cases of Early Diabetic Nephropathy Treated by the Method of Reinforcing Kidney,Activating Blood and Removing Obstruction of Meridians
Yan-Qin HUANG ; Yun-Sheng XU ;
Journal of Traditional Chinese Medicine 1993;0(05):-
Objective To observe the effect of Tangluotong Decoction(Decoctions of removing obstruction of meridians for treating diabetes)based on the principle of reinforcing kidney,activating blood and removing obstruction of meridians on the early diabetic nephropathy(DN)patients.Methods Totally 68 DN patients were randomized into two groups.In addition to the routine treatment for diabetes,the treatment group(38 patients)was administered Tangluotong Decoction while the control group(30 patients)was giv- en Lossartan Potassium Tablets.The clinical symptoms and signs and lab indices before and after treatment were observed.Results The comprehensive total effective rate of the treatment group was 89.47% while that of control group was 60.00%,the difference was significant(P
3.Mechanism of angiotensin Ⅱ in regulation of renin synthesis in juxtaglomerular granular cells
Limeng CHEN ; Yuning HUANG ; Yan QIN
Chinese Journal of Nephrology 2010;26(1):28-33
Objective To elucidate the mechanism of angiotensin (Ang) Ⅱ in regulation of renin synthesis and secretion in primary cultured juxtaglomerular granular cells (JGCs). Methods Mice JGCs were isolated and cultured as described before. Real-time PCR was used to demonstrate the expression of angiotensin converting enzyme (CE) and angiotencin receptor (AT1, AT2) in JGCs. Ang Ⅱ was co-cultured with JGCs stimulated by PGE2 and isoproternol or not. Renin activity in supernatant was detected by radioimmunoassay and renin mRNA expression was examined by real-time PCR. Different concentrations of Ang Ⅱ were co-cultured with JGCs with different time (1 h, 4 h and 24 h), cAMP in cell lysate and supernatant was measured by Cayman Cyclic AMP EIA Kit. The cytoplasmic calcium was decreased by BAPTA-AM, and increased by thapsigargin and cyclopiazonic acid, which could be used to observe the cAMP concentration affected by calcium. Adenylyl cyclase type 5, 6 (AC5, AC6) mRNA expression of JGCs co-cultured with Ang Ⅱ was measured by real-time PCR. Results Real-time PCR confirmed the expression of ACE and AT mRNA in JGCs of WT mice. Angiotensin Ⅱ reduced renin secretion in primary cultures of JGCs [(370.6±36.9) vs (299.6±25.7) ng AngI'ml~(-1)·h~(-1), P=0.014]. Angiotensin Ⅱ dose-dependently down-regulated forskolin-stimulated cAMP production in JGCs. Thapsigargin and cyclopiazonic acid decreased cAMP level. BAPTA-AM increased cAMP production obviously [(11.09±0.48) vs (3.55±0.47) nmol/L, P<0.01]. Ang Ⅱ inhibited AC5 mRNA expression by 42.12%, but did not inhibit AC6 mRNA expression. Conclusions Angiotensin Ⅱ can directly inhibit renin synthesis and secrestion maybe through reducing AC-stimulated cAMP levels. Crosstalk between calcium and cAMP system may exist in precise regulation of renin in JGCs.
5.Influence of continuous light and benzene exposure on erythrocyte parameters and expression of miRNA-144/451 in mice
QIN Jing yao ; HUANG Xiao wei ; LÜ ; Yan rong
China Occupational Medicine 2022;52(04):361-367
Abstract: Objective
To explore the effects of continuous light and benzene exposure on peripheral blood erythrocyte
- Methods
parameters and expression of miR 144/451 in the bone marrow of mice. This was a 2×2 factorial design. Photoperiod
, ,
factor was set as normal and continuous light levels and mice were treated for 12 hours/12 hours light/dark or 24 hours light
-
respectively. The benzene exposure factor was set as non exposure and exposure levels. Mice were exposed to benzene by static
3 ,
inhalation with a mass concentration of 0.0 and 32.5 mg/m for three hours per day five days per week for a total of four weeks.
, ,
Specific pathogen free male C57BL/6 J mice were randomly divided into negative control group simple continuous light group
- - , ,
simple benzene exposure group and combined exposure group with 12 mice per group. After benzene exposure peripheral
,
blood was collected for the detection of erythrocyte parameters in four periods. After the mice were sacrificed the expression of
- - - -
miR 451a and miR 144 5p was detected by real time fluorescence quantitative polymerase chain reaction in bone marrow
Results ( ), ,
tissues. The hematocrit volume HCT mean corpuscular volume mean corpuscular hemoglobin concentration
( ) -
MCHC and mean corpuscular hemoglobin in peripheral blood and the relative expression of miR 451a in bone marrow tissue
( P< ) ,
were statistically significant only in mice with benzene exposure all 0.05 . Among them the MCHC of benzene exposed
(P< ), ( P< ) -
mice increased 0.05 but the other four indexes decreased all 0.05 compared with non benzene exposed mice. In thenegative control group the change of red blood cells count hemoglobin level and HCT in peripheral blood were rhythmical all
P < ) , ( P > )
rhythmical 0.05 . However the indexes above were out of rhythm all rhythmical 0.05 in the simple continuous light group and the
- ( P >
combined exposure group. The change of hemoglobin level and HCT of peripheral blood were also out of rhythm all rhythmical
) - -
0.05 in the simple benzene exposure group. The relative expression of miR 451a in bone marrow tissues of negative control
( P < ), -
group and simple continuous light group was rhythmical all rhythmical 0.05 while the relative expression of miR 451a in simple
- - ( P > )Conclusion
benzene exposure group and combined exposure group was out of rhythm all rhythmical 0.05 . Benzene exposure
,
induced changes in erythrocyte parameters of mice are independent effect and its mechanism may be related to the rhythmic
- ,
expression disorder of miR 451a in bone marrow tissues. Continuous light exposure benzene exposure and their interactions can
,
interfere with the circadian rhythm of erythrocyte parameters such as red blood cell count hemoglobin and HCT to some extent.
6.Effects of Coincident Infection on Treatment Response and Coronary Artery Lesion Outcome in Children with Kawasaki Disease
yan-qin, CUI ; ming-hua, YU ; ping, HUANG ; li, ZHANG
Journal of Applied Clinical Pediatrics 2006;0(15):-
Objective To explore the effects of coincident infection on treatment response and coronary artery lesion (CAL) outcome in children with Kawasaki disease(KD).Methods A retrospective study of 141 children diagnosed on KD between Jul.2005 and Dec.2006 were performed.Standardized clinical assessments,laboratory examinations microbiology test results plus treatment regimens were reviewed.CAL were visualized by using echocardiography.Infectious agents positive (INF+) and negative (INF-) groups were identified,and clinical assessments,laboratory and treatment data were analyzed.Results 1.Concurrent infections:41%(58/141) of children had one of above confirmed infection at KD diagnosis.2.Treatment response:the presence of infection did not alter the response to treatment with intravenous immunoglobulin (IVIG),with resolution of fever within 72 h in 85% (120/141) children after 1 dose of IVIG (2 g/kg) together with aspirin administration regardless of present or absent infection.3.CAL outcome:in total,56.0% (79/141) of children developed CAL at the time of diagnosis,involving dilatation (91.1%,72/79 cases) and aneurysm (8.9%,7/79 cases),and no giant aneurysm was found.Most CAL were recovered within 1 year after treatment.Incidence of aneurysm in INF+ group was significantly higher than that in INF-group (P=0.019).Conclusions Coincident infection would not affect on the clinical assessment,laboratory test results and treatment response to IVIG in children with KD,but would result in higher risk of serious CAL.Therefore,children with infection at diagnosis on KD will not only accept active treatment in acute phase,but also insist on convalescent care and follow-up visit.
7.A randomized controlled comparison between digital three-dimensional reconstruction and percutaneous balloon kyphoplasty
Lei WANG ; Liming WANG ; Yan HUANG ; Qin LU
Chinese Journal of Tissue Engineering Research 2015;(39):6360-6365
BACKGROUND:Experience of the surgeon has a direct effect on the operation time and the repair effect of percutaneous baloon kyphoplasty. Digital technology-assisted rehabilitation program opened up new ideas. OBJECTIVE:To compare the differences of operation time and repair effect between digital technology and percutaneous baloon kyphoplasty.
METHODS:A total of 64 patients treated with percutaneous baloon kyphoplasty in the Department of Orthopedics of the Second People’s Hospital of Huaian from January 1, 2013 to November 20, 2014 were enroled in this study. Using a randomized controled method, according to the order of admission, odd number received digital technology-assisted percutaneous baloon kyphoplasty (experimental group). Even number received percutaneous baloon kyphoplasty (control group). Onset age, preoperative visual analogue scale score, operation time, 3-day postoperative visual analogue scale score and the decreased value of visual analogue scale score were compared and analyzed between the two groups.
RESULTS AND CONCLUSION:Significant differences in operation time, 3-day postoperative visual analogue scale score and the decreased value of visual analogue scale score were detected between the two groups (P < 0.05), and above indexes were better in the experimental group than in the control group. These findings confirm that digital technology-assisted percutaneous baloon kyphoplasty could significantly shorten operation time, optimize repair program, obtain ideal repair effect and elevate patient satisfaction.
8.Early efficacy observation of generic imatinib for treatment of chronic myeloid leukemia in chronic phase
Qin HUANG ; Hong LIU ; Yan LI ; Xiaoyan ZHANG ; Xiaomin WANG
Cancer Research and Clinic 2016;28(12):811-814
Objective To evaluate the cytogenetic, molecular responses and safety of generic imatinib in newly diagnosed patients with chronic myelogenous leukemia in chronic phase (CML-CP) in 1-year at different stages. Methods From January 2014 to November 2014, 50 CML-CP patients received oral generic imatinib 400 mg/d. The cytogenetic examinations, bcr-abl transcript levels and safety were monitored after 3, 6, 9 and 12 months respectively. Results 46 of 50 patients insisted on oral generic imatinib and followed up 1 year. At 3-month, 52.0 % (26/50) patients reached the complete hematologic responses (CHR) rate, and patients at least achieved minor cytogenetic response (mCyR) and bcr-ablIS≤10 % were 84.0 % (42/50) and 42.0 % (21/50). At 6-month, patients at least achieved part cytogenetic response (PCyR) and bcr-ablIS≤10 %were 73.5 % (36/49) and 59.2 % (29/49). At 12-month, patients achieved complete cytogenetic response (CCyR), bcr-ablIS≤1 % and bcr-ablIS≤0.1 % were 60.9 % (28/46), 63.1 % (29/46) and 45.7 % (21/46). The grade 3 leukopenia, thrombocytopenia and anemia rates were 34 % (17/50), 40 % (20/50) and 30 % (15/50), respectively. No grade 4 hematologic toxicity occurred. The common non-hematologic toxicities included edema [84 % (42/50)], nausea [46 % (40/50)], muscle pain [20 % (10/50)], rash [16 % (8/50)], and impaired liver function [8 % (4/50)]. Conclusion Generic imatinib has a favorable effect in treatment of patients with CML-CP, and without serious adverse reactions.
9.Application of Pender′s health promotion model in functional exercise plan of postoperative patients with breast cancer
Wanbing HUANG ; Jun YAN ; Jie CHENG ; Maolin LAN ; Xiangjun QIN
Chinese Journal of Practical Nursing 2016;32(23):1818-1821
Pender′s health promotion model explains the factors influencing health behaviors, which provides a framework for nursing practice and research. Functional exercise compliance in postoperative patients with breast cancer was in a low level, this article reviewed factors influencing functional exercise among breast cancer survivors through three aspects based on health promotion model and made some suggestions on nursing intervention, to promote the rehabilitation of this population.
10.Association of brain-derived neurotrophic factor gene polymorphisms with the risk of pediatric epilepsy
Yongxiang CHEN ; Jing WANG ; Fengjing LI ; Yan QIN ; Jie HUANG
Chinese Journal of Behavioral Medicine and Brain Science 2011;20(10):907-909
Objective To explore the relationship between brain-derived neurotrophic factor (BDNF)gene polymorphisms and the susceptibility to pediatric epilepsy.Methods BDNF polymorphisms in 128 patients with pediatric epilepsy and 132 healthy controls were analyzed with polymerase chain reaction restriction and fragment length polymorphism (PCR-RFLP).Results There were significant differences between pediatric epilepsy and controls on genotype frequency of BDNF-270C/T (X2 =7.08,P =0.03 ).The CC genotype was positively associated with pediatric epilepsy (OR =3.91,95%CI =1.26 ~ 12.14).No differences in genotype or allele frequencies of the other polymorphisms were found between patients and controls.The frequencies of haplotypes did not show significant differences between patients and controls.Conclusion These findings support the hypothesis that BDNF-270C/T polymorphism may contribute to the risk of developing pediatric epilepsy.