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1.
Article in English | WPRIM | ID: wpr-928563

ABSTRACT

OBJECTIVES@#To investigate the clinical treatment outcomes and the changes of the outcomes over time in extremely preterm twins in Guangdong Province, China.@*METHODS@#A retrospective analysis was performed for 269 pairs of extremely preterm twins with a gestational age of <28 weeks who were admitted to the department of neonatology in 26 grade A tertiary hospitals in Guangdong Province from January 2008 to December 2017. According to the admission time, they were divided into two groups: 2008-2012 and 2013-2017. Besides, each pair of twins was divided into the heavier infant and the lighter infant subgroups according to birth weight. The perinatal data of mothers and hospitalization data of neonates were collected. The survival rate of twins and the incidence rate of complications were compared between the 2008-2012 and 2013-2017 groups.@*RESULTS@#Compared with the 2008-2012 group, the 2013-2017 group (both the heavier infant and lighter infant subgroups) had lower incidence rates of severe asphyxia and smaller head circumference at birth (P<0.05). The mortality rates of both of the twins, the heavier infant of the twins, and the lighter infant of the twins were lower in the 2013-2017 group compared with the 2008-2012 group (P<0.05). Compared with the 2008-2012 group, the 2013-2017 group (both the heavier infant and lighter infant subgroups) had lower incidence rates of pulmonary hemorrhage, patent ductus arteriosus (PDA), periventricular-intraventricular hemorrhage (P-IVH), and neonatal respiratory distress syndrome (NRDS) and a higher incidence rate of bronchopulmonary dysplasia (P<0.05).@*CONCLUSIONS@#There is a significant increase in the survival rate over time in extremely preterm twins with a gestational age of <28 weeks in the 26 grade A tertiary hospitals in Guangdong Province. The incidences of severe asphyxia, pulmonary hemorrhage, PDA, P-IVH, and NRDS decrease in both the heavier and lighter infants of the twins, but the incidence of bronchopulmonary dysplasia increases. With the improvement of diagnosis and treatment, the multidisciplinary collaboration between different fields of fetal medicine including prenatal diagnosis, obstetrics, and neonatology is needed in the future to jointly develop management strategies for twin pregnancy.


Subject(s)
Bronchopulmonary Dysplasia/epidemiology , Female , Gestational Age , Humans , Infant , Infant, Extremely Premature , Infant, Newborn , Pregnancy , Respiratory Distress Syndrome, Newborn/epidemiology , Retrospective Studies , Treatment Outcome
2.
Article in Chinese | WPRIM | ID: wpr-877637

ABSTRACT

OBJECTIVE@#To systematically evaluate the efficacy and safety of conventional therapy combined with moxibustion in the treatment of chronic obstructive pulmonary disease (COPD) in stable phase based on Meta-analysis medicine.@*METHODS@#The randomized controlled trials (RCTs) of moxibustion as adjuvant therapy for COPD were retrieved from the databases of CNKI, Wanfang, SinoMed, PubMed, Web of Science, Cochrane Library and Ebsco. RevMan5.3 software was used for Meta analysis, and the quality of evidence was evaluated according to GRADE standards.@*RESULTS@#A total of 16 RCTs were included, involving 1425 patients. The results of Meta-analysis showed that: compared with the conventional treatment, ①the adjuvant therapy with moxibustion had advantages in reducing the number of acute exacerbations [@*CONCLUSION@#The efficacy of moxibustion as adjuvant therapy for COPD in stable phase is better than that of simple conventional therapy. Due to insufficient clinical evidence and the limitations of this study, clinical safety is unclear and further evidence is needed to support the results.


Subject(s)
Humans , Lung , Moxibustion , Pulmonary Disease, Chronic Obstructive/therapy , Treatment Outcome
3.
Article in English | WPRIM | ID: wpr-881076

ABSTRACT

Digestive system cancers, including liver, gastric, colon, esophageal and pancreatic cancers, are the leading cause of cancers with high morbidity and mortality, and the question of their clinical treatment is still open. Previous studies have indicated that Ziyuglycoside II (ZYG II), the major bioactive ingredient extract from Sanguisorba officinalis L., significantly inhibits the growth of various cancer cells. However, the selective anti-tumor effects of ZYG II against digestive system cancers are not systemically investigated. In this study, we reported the anti-cancer effect of ZYG II on esophageal cancer cells (OE21), cholangiocarcinoma cells (HuCCT1), gastric cancer cells (BGC-823), liver cancer cells (HepG2), human colonic cancer cells (HCT116), and pancreatic cancer cells (PANC-1). We also found that ZYG II induced cell cycle arrest, oxidative stress and mitochondrial apoptosis. Network pharmacology analysis suggested that UBC, EGFR and IKBKG are predicted targets of ZYG II. EGFR signaling was suggested as the critical pathway underlying the anti-cancer effects of ZYG II and both docking simulation and western blot analysis demonstrated that ZYG II was a potential EGFR inhibitor. Furthermore, our results showed synergistic inhibitory effects of ZYG II and chemotherapy 5-FU on the growth of cancer cells. In summary, ZYG II are effective anti-tumor agents against digestive cancers. Further systemic evaluation of the anti-cancer activities in vitro and in vivo and characterization of underlying mechanism will promote the development of novel supplementary therapeutic strategies based on ZYG II for the treatment of digestive system cancers.

4.
Journal of Experimental Hematology ; (6): 1867-1872, 2020.
Article in Chinese | WPRIM | ID: wpr-879985

ABSTRACT

OBJECTIVE@#To investigate the gene mutation in adult patients with B-ALL and its influence on clinical prognosis.@*METHODS@#Clinical data of 226 adult patients with B-ALL were retrospectively analyzed in the period from August 2011 to February 2018. The incidence of gene mutation in all patients were detected, and the influence of mutation gene on clinical prognosis were estimated. Cox regression model were used to evaluate the independent prognostic factors.@*RESULTS@#208 (92.04%) of 226 patients showed gene mutations, and the median mutation number was 2 (0-8). Among them, 54 cases (23.89%) showed 14 or more mutations. The top five mutation types of all patients were SF1, FAT1, MPL, PTPNII and N-RAS respectively. The median OS and median RFS times of 226 patients were 27.0 (5.5-84.0) months and 22.5 (0-81.0) months respectively. The OS and RFS times of Ph@*CONCLUSION@#Gene mutations are common in all adult B-ALL patients, and the clinical prognosis of patients with JAK and epigenetics-related signaling pathway mutations is worsen, while the WBC level closely relates to the clinical prognosis of the patients.


Subject(s)
Adult , Humans , Mutation , Patients , Prognosis , Proportional Hazards Models , Retrospective Studies
5.
Article in Chinese | WPRIM | ID: wpr-826698

ABSTRACT

The specific therapeutic regimen of Bell's palsy was proposed in association with the common refractory factors and the clinical experience of professor -. It is viewed that aging, absent intervention standard treatment at early stage, no prodromal symptoms and progressive onset are the refractory factors. Acupuncture at the local area is predominated in treatment. The different acupoint prescription regimens of acupuncture therapy are selected depending on muscle relaxation, muscle stiffness and specific accompanying symptoms, associated with electric stimulation, moxibustion and the tapping technique with plum-blossom needle so as to ensure the improvement of clinical therapeutic effect.


Subject(s)
Acupuncture Points , Acupuncture Therapy , Bell Palsy , Therapeutics , Facial Paralysis , Therapeutics , Humans , Moxibustion
6.
Article in Chinese | WPRIM | ID: wpr-771492

ABSTRACT

At present,the function evaluation of health food containing Chinese materia medica is in lack of theoretical support of Chinese medicine,which can't reflect the function characteristics,dose-effect relationship and mechanism of functional food. What' s more,the evaluation technology of health food containing Chinese materia medica is relatively lagging behind and has been abolished now,which seriously restricts the development of health food containing Chinese materia medica industry. The proportion of health food containing Chinese materia medica with enhancing immune function is the highest among approved products,which is up to 30.33%. By collecting,analyzing and digging the current evaluation situation of enhancing immune function of health food containing Chinese materia medica,this paper has shown that there is no difference between health food containing Chinese materia medica evaluation and other functional food evaluation. What's more,there is a lack of characteristics of traditional Chinese medicine(TCM). The technological means including evaluation of immune active substances is under-developed and the immune cell evaluation needs to be refined and improved urgently,restricting the development of health food containing Chinese materia medica industry. Therefore,the evaluation of the enhanced immune function of health food containing Chinese materia medica should be guided by health-preserving theory in TCM,and based on the identification of TCM constitution for its claim of health function. With TCM theory and modern scientific technological means,a new evaluation model for immune function enhancement of health food containing Chinese materia medica is put forward to distinguish it from other functional food and traditional medicines. Formulation of the evaluation technology and technical specifications suitable for health food containing Chinese materia medica can fundamentally ensure the healthy,orderly,fast and sustainable development of health food containing Chinese materia medica industry.


Subject(s)
Functional Food , Humans , Immune System , Materia Medica , Medicine, Chinese Traditional , Research Design , Technology
7.
Article in Chinese | WPRIM | ID: wpr-798502

ABSTRACT

Objective:To explore the molecular mechanism of Banxia Baizhu Tianma Tang in treating hypertension. Method:Based on an internet-based computation platform for integrated pharmacology of traditional Chinese medicine(TCM),TCM prescription database,TCM database,TCM component database and disease/symptoms target database,information on the chemical compositions contained in TCM was retrieved,an interaction network between potential targets and disease targets of Banxia Baizhu Tianma Tang was built,then core target was enriched and calculated,gene function and pathway analysis was carried out,the multi-dimensional relationship network of "Chinese herbs-ingredients-critical targets-key pathways" of Banxia Baizhu Tianma Tang was further constructed. Result:A total of 90 active ingredients in Banxia Baizhu Tianma Tang were obtained,including alkaloids,nucleosides,flavonoids,saponins,organic acids and other ingredients;they involved 287 core targets,including 13 direct targets,such as adenylate cyclase,G protein coupled with β1 receptor,glucose kinase,etc;they also involved nervous system,endocrine system,circulatory system,estrogen signaling pathway,chemokine signaling pathway and other related biological processes and signaling pathways. Conclusion:Banxia Baizhu Tianma Tang can regulate neurotransmitter concentration and activity abnormalities,improve the protective effect of vascular endothelial cells by improving insulin resistance,regulating the production of inflammatory factors,and inhibiting inflammatory reactions,thereby exerting pharmacological effects on the treatment of hypertension.This study can provide a scientific basis for comprehensive interpretation of mechanism of Banxia Baizhu Tianma Tang.

8.
Acta Pharmaceutica Sinica ; (12): 393-398, 2019.
Article in Chinese | WPRIM | ID: wpr-780128

ABSTRACT

Lipid droplets (LDs) are ubiquitous dynamic organelles that store and supply lipids in all eukaryotic and some prokaryotic cells for energy metabolism, membrane synthesis and production of essential lipid-derived molecules. There is increasing evidence that hepatitis C virus (HCV) has co-evolved due to its lack of lipid biosynthetic pathways to utilize host lipid metabolic pathways to establish a suitable environment for virus proliferation and obtain the necessary components, eventually promote the assembly and transportation of virus. In this review, we outline the relationship between HCV life cycle and lipid droplet biosynthesis and metabolism, with the aim to discover potential antiviral targets for development of new therapeutic interventions.

9.
Article in Chinese | WPRIM | ID: wpr-772447

ABSTRACT

OBJECTIVE@#This study aimed to investigate the clinical phenotype and genetic characteristics of Chinese families with Van der Woude syndrome (VWS).@*METHODS@#Clinical manifestations between 14 families and within each family were recorded. Possible inheritance modes and pathogenic genes were analyzed. Phenotypic distribution and gene frequencies were calculated.@*RESULTS@#Of the pedigrees investigated, an autosomal dominant inheritance pattern was suggested. All patients had typical symptoms. The pathogenic gene was interferon regulatory factor 6 (IRF6). Phenotypic distribution frequencies were as follows: lip pits (91.9%), cleft lip and/or palate (73.0%), and hyperdontia (8.1%). There were significant differences in clinical phenotypes among individuals of different families and individuals of the same family.@*CONCLUSIONS@#VWS in a Chinese population was dominantly inherited with high penetrance and variable expressivity. The pathogenic gene was IRF6. VWS in a Chinese population was genotyped as VWS1.


Subject(s)
Abnormalities, Multiple , Genetics , Cleft Lip , Genetics , Cleft Palate , Genetics , Cysts , Genetics , Humans , Interferon Regulatory Factors , Genetics , Lip , Congenital Abnormalities , Mutation , Pedigree , Syndrome
10.
Article in Chinese | WPRIM | ID: wpr-772445

ABSTRACT

OBJECTIVE@#This study aimed to investigate the application of acellular dermal matrix and acellular bone matrix in the management of oro-antral fistula.@*METHODS@#Nine patients with oro-antral fistula (with defect greater than 5 mm×5 mm) after maxillary cyst resection or maxillary molar extraction were selected. The defects were repaired by the simultaneous implantation of acellular dermal matrix and acellular bone matrix.@*RESULTS@#The incisions of nine patients were all primary healing. After 6 months of follow-up, the oro-antral communication healed well, and no symptom such as nasal congestion or runny nose was observed. The clinical and CT examinations confirmed wound healing.@*CONCLUSIONS@#The usage of acellular dermal matrix and acellular bone matrix is a reliable repairing method for ora-antral fistula.


Subject(s)
Acellular Dermis , Bone Matrix , Fistula , General Surgery , Humans , Wound Healing
11.
Article in Chinese | WPRIM | ID: wpr-851784

ABSTRACT

Objective: To explore the mechanism of the intervention of Xinkeshu Tablets (XKST) on atherosclerosis (AS) and provide reference for the secondary development and clinical application of XKST. Methods: The integrated pharmacology platform was used to predict the key targets and pathways of the intervention of XKST on AS and its molecular mechanism was also explored. Results: In the integrative analysis of heterogeneous network of “TCM-component-target-pathway”, 80 relevant effective ingredients were found, including B4GALT4, B4GALT2, PRKCD, GCK, GNB1, and other key targets; Endocrine system, thyroid hormone signaling pathway, nervous system, estrogen signaling pathway, and chemokine signaling pathway were key pathways related with its anti-atherosclerosis. Conclusion: According to the analysis and prediction of the enrichment information, the effect of XKST on common regulating PI3K/Akt/eNOS and Raf/MEK/ERK signaling pathway and protecting vascular endothelial cells is first prompted, thus achieving the intervention in AS.

12.
Article in Chinese | WPRIM | ID: wpr-698568

ABSTRACT

BACKGROUND: Paeonol is an active ingredient of traditional orthopedic drugs, exhibiting pain easing, detumescence and promotion of bone healing. The brushite calcium phosphate cement possesses good biocompatibility, which can be completely degraded in the body. A large number of studies have addressed the modification of brushite calcium phosphate cement to make it more suitable for clinical applications. OBJECTIVE: To study the setting time, syringeability, compressive strength, drug delivery ability, antibacterial property and cell affinity of brushite calcium phosphate cement with the addition of paeonol. METHODS: The tricalcium phosphate was synthesized by calcium nitrate and diammonium hydrogen phosphate, followed by being calcined into β-tricalcium phosphate at 1 000 ℃. Chitosan was dissolved in citric acid solution to prepare the liquid phase. The composite bone cement was prepared by mixing paeonol, β-tricalcium phosphate and monocalcium phosphate with the liquid phase. The setting time, syringeability, phase composition, anti-collapsibility, compressive strength, degradation property, drug delivery ability, antibacterial property and cell affinity of the composite bone cement in vitro were evaluated. RESULTS AND CONCLUSION: The setting time of bone cement was 12-17 minutes, which was prolonged with the increase of paeonol release. Moreover, the loaded paeonol showed no significant effect on the phase composition, syringeability, anti-collapsibility, and compressive strength of the compound. However, the degradation rate and drug release content were significantly enhanced with the increase of paeonol release.The inhibition zone experiments showed that the paeonol loaded cement inhibited the growth of Escherichia coli, but was not sensitive to Staphylococcus aureus.HepG2 cells could adhere and proliferate on the material surface after 3 days co-culture,with clear cell pseudopodia arising from the cell surface under the scanning electron microscope.

13.
International Eye Science ; (12): 150-152, 2018.
Article in Chinese | WPRIM | ID: wpr-695145

ABSTRACT

AIM:To describe the outcomes of corneal stromal lenticules in repairing of corneal ulcer and/or perforation.METHODS:This was a retrospective chart review of 6 eyes of 6 patients from January to June 2017,who underwent corneal ulcer repair with the corneal,stromal lenticules harvested from femtosecond laser refractive surgery and kept in pure glycerin for use.Three cases of infectious corneal ulcers were bacterial,fungal,and infection with foreign bodies in corneal deep layer,one each.The other 3 were corneal ulcer perforation.Making sure no air bubble between donor graft and Descemet membrane.The mean follow-up time was 3.71 ±1.56mo (range 1-6mo).RESULTS:All eyes were successfully treated under control of infection without intra-operative complications,and early postoperative evaluation showed a clear graft in all cases.The last follow-up visit showed the mean best corrected visual acuity (VA) significantly improved after surgery.There was significant difference from 0.48±0.12 to 1.50±0.08 (P<0.01).CONCLUSION:The preliminary results suggest that the use of corneal stromal lenticules may be a safe and effective surgical alternative for corneal ulcer,even though the long-term outcome of the graft needs to be further observed.

14.
Article in English | WPRIM | ID: wpr-327227

ABSTRACT

<p><b>OBJECTIVES</b>To explore the effects of Chinese medicine prescription Zuogui Pill (, ZGP) on monoamine neurotransmitters and sex hormones in climacteric rats with induced panic attacks.</p><p><b>METHODS</b>Forty-eight climacteric female rats were randomized into 6 groups with 8 rats in each group: the control group, the model group, the low-, medium- and high-dose ZGP groups and the alprazolam group. Rats in the low-, medium- and high-dose ZGP groups were administered 4.725, 9.45, or 18.9 g/kg ZGP by gastric perfusion, respectively. The alprazolam group was treated by gastric perfusion with 0.036 mg/kg alprazolam. The control and model groups were treated with distilled water. The animals were pretreated once daily for 8 consecutive weeks. The behaviors of rats in the open fifield test and the elevated T-maze (ETM) were observed after induced panic attack, and the levels of brain monoamine neurotransmitters and the plasma levels of sex hormones were measured.</p><p><b>RESULTS</b>Compared with the control group, the mean ETM escape time and the levels of 5-hydroxytryptamine (5-HT) and noradrenalin (NE) of the model group were signifificantly reduced (P<0.05), Compared with the model group, the mean ETM escape time and the 5-HT and NE levels of all the ZGP groups increased signifificantly (P<0.05 or P<0.01). However, no signifificant difference was observed in the levels of sex hormones between the groups.</p><p><b>CONCLUSION</b>Pretreatment with ZGP in climacteric rats may improve the behavior of panic attack, which may be related to increased 5-HT and NE in the brain.</p>


Subject(s)
Animals , Behavior, Animal , Biogenic Monoamines , Metabolism , Climacteric , Drugs, Chinese Herbal , Pharmacology , Therapeutic Uses , Female , Gonadal Steroid Hormones , Blood , Maze Learning , Neurotransmitter Agents , Metabolism , Panic Disorder , Blood , Drug Therapy , Rats , Rats, Sprague-Dawley
15.
Article in Chinese | WPRIM | ID: wpr-264064

ABSTRACT

<p><b>OBJECTIVE</b>To evaluate the effect of water pollution with dexamethasone on intestinal flora in mice.</p><p><b>METHODS</b>Twenty Balb/c mice were randomly divided into control group and low-, moderate- and high-dose dexamethasone groups. The mice in dexamethasone groups were exposed to dexamethasone sodium phosphate in drinking water at doses of 0.035, 0.225, and 2.25 ng for 36 days. The changes in behaviors, fur condition, and feces of the mice were observed daily. All the mice were sacrificed at 36 days and the tissues in the ileocecal region was collected for denaturant gradient gel electrophoresis (DGGE) of 16S rDNA V6 variable regions of microbes and sequence analysis with BLAST.</p><p><b>RESULTS</b>The mice in the 3 dexamethasone groups all showed aggressive behaviors. Cluster analysis of DGGE graph showed relatively stable floras in the ileocecal region in all the mice, but principal component analysis identified differences in the dominating flora among the groups. Diversity analysis of the flora revealed significantly increased amount and types of bacteria in the intestinal flora in all the 3 dexamethasone groups (P<0.05 or 0.01) compared with the control group. Sequence analysis of 16S rDNA V6 regions showed 15 common bacterial species and 2 differential species between the dexamethasone groups and the control group with changes in the type and proportion of the dominating bacterium in the dexamethasone groups. Lactobacillus colonization was detected in the control group but not in moderate- and high-dose dexamethasone groups, and Shigella species were found in the latter two groups.</p><p><b>CONCLUSIONS</b>Water contamination with dexamethasone can affect the nervous system of mice, cause changes in the types and amounts of intestinal bacteria and the dominating bacteria, and inhibit the colonization of probiotics in the intestinal floras to increase the risk of invasion by intestinal pathogenic bacteria.</p>


Subject(s)
Animals , Bacteria , Classification , Dexamethasone , Pharmacology , Drinking Water , Chemistry , Feces , Gastrointestinal Microbiome , Lactobacillus , Mice , Mice, Inbred BALB C , Probiotics , RNA, Bacterial , Genetics , RNA, Ribosomal, 16S , Genetics , Shigella
16.
Article in Chinese | WPRIM | ID: wpr-272681

ABSTRACT

This paper aimed to establish animal models which are suitable for the activity found, efficacy evaluation of herbs resistant to acute liver injury with syndrome of liver depression and spleen deficiency and new drug research and development based on corresponding of formula and syndrome. The symptoms that are suitable for evaluating the rat models of acute liver injury with syndrome of liver depression and spleen deficiency were extracted according to the evolution rule of the etiology and pathogenesis in traditional Chinese medicine and the modern pathological mechanism. Xiaoyao pill and silibin meglumine tablets were used as drug counter evidence for models in accordence with the principle of consistence of prescription and syndrome. Rats model were fed with high-lipid and low-protein fodder of different proportion and induced by intraperitoneal injection with pig serum, intragastric administration with edible alcohol once a day for 7 days. Daily record of body weight, daily food intake and daily water intake were conducted day after day in experimental session. Symptoms were also observed and evaluated by score at the same time. The contents of ALT, AST, PA, TBIL and TBA in serum were detected and histopathological changes of liver were checked at the ending of experiment. Obvious acute liver injury occurred to all rats in model groups at 1 week following model induction. Both main symptoms and secondary symptoms were consistent with syndrome manifestation of liver depression and spleen deficiency. Compared with normal control group, the activity of ALT,AST and contents of TBIL,TBA in serum increased and the content of PA decreased. Liver tissue pathological morphology showed inflammatory cells infiltration, eosinophilic or eosinophilic adipose change in hepatocytes of rats in model groups. All the above lesions manifestation could be improved by drug counterevidence. By the disproof of medicine, rat models of acute liver injury with syndrome of liver depression and spleen deficiency could be induced by fed with high-lipid and low-protein fodder which contained 89.5% cornstarch, 10% lard and 0.5% cholesterol, intraperitoneal injected with pig serum, intragastric administrated with edible alcohol for 7 days. The rat models with a low mortality could be induced in a short time and animal status were similar to syndrome performance of patients. So the rats models are suitable for the activity found, efficacy evaluation and drug discovery of herbs resistant to acute liver injury with syndrome of liver depression and spleen deficiency, and also can be used in the research of correlation between prescription and syndrome and its mechanism.

17.
Chinese Pharmaceutical Journal ; (24): 671-677, 2016.
Article in Chinese | WPRIM | ID: wpr-859148

ABSTRACT

OBJECTIVE: To put forward some suggestions on drug manufacturing site changes for our country. METHODS: By studying American regulations of drug manufacturing site changes, analyze its advantages in regulations. RESULTS AND CONCLUSION: It's suggested that We should apply the risk-based approach to classify drug manufacturing site changes, focus more on high-risk manufacturing site change to lighten the burden of the agency and corporations, and liberalize drug manufacturing site changes to promote smooth implementation of the marketing authorization system.

18.
Acta Pharmaceutica Sinica ; (12): 287-2016.
Article in Chinese | WPRIM | ID: wpr-779167

ABSTRACT

Androgen receptor (AR) plays an important role in the maintenance of prostate function and development of prostate cancer. AR is the key target in the therapy of prostate cancer. In this study, a cell-based screening assay was established by dual-luciferase reporter system to analyze the activity of AR. In the screening assay, we detected the anti-prostate cancer activities of rhodiola root extract, wild kiwifruit root extract and tripterygium wilfordii root extract, which may provide a new strategy for the treatment of prostate cancer.

19.
Journal of Preventive Medicine ; (12): 989-991,998, 2015.
Article in Chinese | WPRIM | ID: wpr-792451

ABSTRACT

Objective To analyze the dominant genotypes of porin Ⅰ gene encoding major outer membrane protein of Neisseria gonorrhoeae in Zhejiang Province and to construct the prokaryotic expression systems of porinⅠA and porinⅠB genes.Methods Based on the previous research,the porinⅠA and porinⅠB genes were sequenced after T -A cloning, and the dominant genotypes of porinⅠA and porinⅠB genes were analyzed.Then the prokaryotic expression systems of the dominant genotypes of porinⅠA and porinⅠB genes were constructed.Ten percent SDS -PAGE was applied to measure the output of PⅠA and PⅠB proteins after inducement by 0.5 mmol/L IPTG.Results All 5 porinⅠA isolates sequenced were serovar ⅠA -6.Of the 11 porinⅠB isolates sequenced,there were 5 serovarⅠB -3 isolates,3 serovarⅠB -3 /6 isolates,1 serovarⅠ B -6 isolate and 2 mutant isolates.Outputs of P Ⅰ A and P Ⅰ B expressed by the constructed prokaryotic expression systems PET -42 -PⅠA and PET -42 -PⅠB were as high as 30% and 20% respectively. Conclusion ⅠA -6 is the dominant genotypes of porinⅠA gene and ⅠB -3 is the dominant genotypes of porinⅠB gene in Zhejiang Province.Comparing to the porinⅠB gene,porinⅠA gene is more conserved.The prokaryotic expression systems with high efficiency of porinⅠA and porinⅠB genes were successfully constructed,which may be helpful in the further research of genetic engineering vaccine and clinical detection of Neisseria gonorrhoeae.

20.
Article in Chinese | WPRIM | ID: wpr-330208

ABSTRACT

<p><b>OBJECTIVE</b>To study the effect of single administration of aqueous extracts from aconite on "dose-toxicity" relationship and "time-toxicity" relationship of mice hearts, through changes in electrocardiogram (ECG) and serum biochemical indexes.</p><p><b>METHOD</b>Mice were grouped according to different drug doses and time points, and orally administered with water extracts from aconite for once to observe the changes of mice ECG before and after the administration, calculate visceral indexes heart, liver and kidney, and detect levels of CK, LDH, BNP and CTn-I in serum.</p><p><b>RESULT</b>According to the "time-toxicity" relationship study, at 5 min after oral administration with aqueous extracts from aconite in mice, the heart rate of mice began rising, reached peak at 60 min and then slowly reduced; QRS, R amplitude, T duration and amplitude and QT interval declined at 5 min, reduced to the bottom at 60 min and then gradually elevated. The levels of CK, LDH, BNP and CTn-I in serum elevated at 5 min and reached the peak at 60 min, with no significant change in ratios of organs to body at different time points. On the basis of the "dose-toxicity" relationship, with the increase in single dose of aqueous extracts from aconite, the heart rate of mice. QRS, T duration and amplitude and QT interval declined gradually, and levels of CK, LDH, BNP and CTn-I in serum slowly elevated, with a certain dose dependence and no significant change in ratios of organs to body in mice.</p><p><b>CONCLUSION</b>Single oral administration of different doses of aqueous extracts from aconite could cause different degrees of heart injury at different time points, with a certain dose dependence. Its peak time of toxicity is at 60 min after the administration of aqueous extracts from aconite.</p>


Subject(s)
Aconitum , Chemistry , Animals , Dose-Response Relationship, Drug , Drugs, Chinese Herbal , Toxicity , Female , Heart , Physiology , Heart Rate , Kidney , Liver , Male , Mice
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