3.Polyketide Synthases Screening from Sponge-associated Culturable Microorganisms
Qing-Peng MENG ; Zhi-Yong LI ; Xiao-Ling MIAO ;
Microbiology 1992;0(03):-
PKS gene was screened by PCR from thirty strains of spone-associated bacteria including twenty-one actinomycetes isolated from Craniella anstrialiensis and nine bacillus isolated from Dysidea avara in the South China Sea.As a result,a 669 bp KS domain gene was successfully amplified from Bacillus C89.BLAST analysis showed that the KS domains were most closely related to the KS sequences of Bacillus subtilis subsp.subtilis str.168 with 96% similarity.Phylogenetic analysis demonstrated the KS domain belong to trans-AT KS domains.This study demonstrated the existence of PKS gene in bacteria associated with sponge Dysidea avara for the first time,and provided proof for the hypothesis that sponge-associated bacteria are perhaps the true producers of many novel bioactive compounds in sponge.Meanwhile,this study lays a basis for the microbial screening for polyketide compounds production.
4.Differentiation Study of Chinese Medical Syndrome Typing for Diarrhea-predominant Irritable Bowel Syndrome Based on Information of Four Chinese Medical Diagnostic Methods and Brain-gut Peptides.
Hao-meng WU ; Zhi-wei XU ; Hai-qing AO ; Ya-fei SHI ; Hai-yan HU ; Yun-peng JI
Chinese Journal of Integrated Traditional and Western Medicine 2015;35(10):1200-1204
OBJECTIVETo establish discriminant functions of diarrhea-predominant irritable bowel syndrome (IBS-D) by studying it from quantitative diagnosis angle, hoping to reduce interference of subjective factors in diagnosing and differentially diagnosing Chinese medical syndromes of IBS-D.
METHODSA Chinese medical clinical epidemiological survey was carried out in 439 IBS-D patients using Clinical Information Collection Table of IBS. Initial syndromes were obtained by cluster analysis. They were analyzed using step-by-step discrimination by taking information of four Chinese medical diagnostic methods and serum brain-gut peptides (BGP) as variables.
RESULTSClustering results were Gan stagnation Pi deficiency syndrome (GSPDS), Pi-Wei weakness syndrome (PWWS), Gan stagnation qi stasis syndrome (GSQSS), Pi-Shen yang deficiency syndrome (PSYDS), Pi-Wei damp-heat syndrome (PWDHS), cold-damp disturbing Pi syndrome (CDDPS). Of them, GSPDS was mostly often seen with effective percentage of 34. 2%, while CDDPS was the least often seen with effective percentage of 5.5%. A total of 5 discriminant functions for GSPDS, PWWS, GSQSS, PSYDS, and PWDHS were obtained by step-by-step dis- crimination method. The retrospective misjudgment rate was 4.1% (16/390), while the cross-validation misjudgment rate was 15.4% (60/390).
CONCLUSIONThe establishment of discriminant functions is of value in objectively diagnosing and differentially diagnosing Chinese medical syndromes of IBS-D.
Alarmins ; Brain ; Cluster Analysis ; Diarrhea ; classification ; diagnosis ; Hot Temperature ; Humans ; Irritable Bowel Syndrome ; classification ; diagnosis ; Medicine, Chinese Traditional ; Qi ; Retrospective Studies ; Surveys and Questionnaires ; Yang Deficiency
5.The relationship between test anxiety and personality, self-esteem in grade one senior high students.
Jin-tong LIU ; Xian-peng MENG ; Qing-zhi XU
Chinese Journal of Preventive Medicine 2006;40(1):50-52
OBJECTIVETo explore the relationship between test anxiety and personality, self-esteem in grade one senior high school students.
METHODSTotally 538 senior high school students of grade one were investigated by Test Anxiety Scale (TAS), Eysenck Personality Questionnaire (EPQ) and Self-Esteem Scale (SES) in a Senior High School in Shandong Province.
RESULTSThe prevalence of test anxiety among all the surveyed students was rated 65.2%. The Psychoticism (P) (51.60 +/- 9.66) or Neuroticism (N) (51.57 +/- 10.75) factor score of EPQ in students with test anxiety was significantly higher than that in students without test anxiety (48.07 +/- 8.62, 45.65 +/- 10.14) (P < 0.001), while the Extroversion or Introversion (E) score (50.76 +/- 11.09) was on the contrary (53.68 +/- 11.60) (P < 0.01). The total score of TAS was significantly positively related to the P (r = 0.14) and N (r = 0.36) factor score and significantly negatively related to the E factor score of EPQ (r = -0.15) (P < 0.001). The prevalence of test anxiety in introversive students (72.3%) was higher than that in extroversive students (53.2%) (P < 0.05), and that in students with unstable emotion (81.4%) and in students with apparent psychoticism (84.1%) were also higher than that in those with stable emotion (41.0%) and in those without psychoticism (57.7%) (P < 0.01). The total score of SES in students with test anxiety (29.12 +/- 4.41) was significantly lower than that in students without test anxiety (30.29 +/- 4.25) (P < 0.01). The total score of TAS was significantly negatively related to the total score of SES (r = -0.23) (P < 0.001).
CONCLUSIONTest anxiety should be related to the personality and self-esteem, and the prevalence of test anxiety in introversive, unstable emotional, apparent psychoticism or low self-esteem students should be higher.
Adolescent ; Anxiety ; psychology ; China ; Educational Measurement ; Female ; Humans ; Individuation ; Male ; Personality ; Self Concept ; Students ; psychology ; Test Anxiety Scale ; statistics & numerical data
6.The effect of the Mongolian medicine modified Tabusen-2 on kidney-yang deficiency in rats based on metabolomics
Zhi WANG ; Pei-feng XUE ; Cai-meng XU ; Kun WANG ; Rui DONG ; Qing-xiang SONG ; Bi QU ; Xin DONG
Acta Pharmaceutica Sinica 2022;57(11):3378-3386
We used metabolomics to investigate the ability of a traditional Mongolian medicine called modified Tabusen-2 (MT-2) to improve kidney yang deficiency (KYD) in rats. All animal experiments were conducted under the guidance and standards of the Medical Ethics Committee of Inner Mongolia Medical University. SD rats were divided into 6 groups of six rats: a normal group, a model group, Jinkuishenqi pill administration group (1.26 g·kg-1), and MT-2 administration in high-, medium- and low-dose groups (1.512, 0.756, and 0.378 g·kg-1). KYD was established by intramuscular injection of hydrocortisone (HC) and biochemical indicators and clinical characterization was used to confirm that KYD was established. All groups received intragastrically administered drug (Jinkuishenqi pill or MT-2) or saline. Serum from each group was collected after 8 weeks and analyzed by UPLC-Q-exactive-MS to measure various biochemical indicators. The biomarkers affected by MT-2 were identified and the metabolic pathways of KYD regulated by MT-2 were analyzed by metabolomic analysis. The results show that MT-2 can decrease serum creatinine (Cr) in KYD rats and significantly increase (
7.Sixty-four-multi-detector computed tomography diagnosis of coronary artery anomalies in 66 patients.
Shan YANG ; Meng-Su ZENG ; Zhi-Yong ZHANG ; Zhi-Qing LING ; Jian-Ying MA ; Gang CHEN
Chinese Medical Journal 2010;123(7):838-842
BACKGROUNDThe abnormalities of coronary arteries, though rare and sometimes benign, may first present clinically as myocardial infarction or sudden death. Multi-detector computed tomography (MDCT) is a non-invasive test that is highly suitable for detecting these anomalies. The study aimed to review the 64-MDCT appearance of the coronary artery anomalies in 66 patients and to discuss the clinical importance of these anomalies.
METHODSIn 6014 consecutive patients examined over 12 months by 64-MDCT for the study of coronary artery disease, 66 were diagnosed for coronary artery anomalies. All patients were symptomatic for one or more of the following diseases: chest pain, dyspnoea, palpitations, arrhythmia and myocardial infarction. Nine patients had undergone a coronary angiography. All the CT images were evaluated by two radiologists and one cardiologist. The right coronary artery (RCA) and the conus branch arising separately, myocardial bridging and duplication of arteries were not analysed in our study.
RESULTSThe incidence of coronary artery anomalies found in our study group was 1.097%. In the selected patients, seven different types of coronary anomalies were found by 64-MDCT examination. The high takeoff, origin of the coronary artery from the opposite or noncoronary sinus with an anomalous course, and coronary artery fistula were the three common forms of anomalies (n = 16, 18 and 16, respectively). Compared with the results of the coronary angiography, the number of the drainage sites of two coronary artery fistula was less in MDCT images (3 small sites in total). In all cases, coronary artery computed tomography angiography (CTA) technique was able to recognize the origin of the coronary artery, its three-dimensional course and its spatial relationship with the adjacent structures. Conventional coronary angiography in two cases, however, was unable to provide sufficient information for correct and complete diagnosis.
CONCLUSIONSIn conclusion, the study showed that 64-MDCT, especially the volume rendering technique (VRT), may be useful for the assessment of complex variations, even if the conventional angiography may not be sufficient. It may be considered as the first-choice imaging modality when an anomalous coronary artery is suspected.
Adolescent ; Adult ; Aged ; Aged, 80 and over ; Child ; Child, Preschool ; Coronary Vessel Anomalies ; diagnostic imaging ; Female ; Humans ; Imaging, Three-Dimensional ; methods ; Male ; Middle Aged ; Tomography, X-Ray Computed ; methods ; Young Adult
8.A modified management of the transcatheter occlusion of patent ductus arteriosus: using angiography combined with transthoracic echocardiography.
Xiang-Chun MENG ; Hua-Bo CAI ; Zhi-Chuan LI ; Tao WANG ; Qing ZHANG ; Zhi-Wei ZHANG
Chinese Journal of Contemporary Pediatrics 2010;12(2):103-105
OBJECTIVETo evaluate the feasibility of angiography combined with transthoracic echocardiography (TEE) as a modified management of the transcatheter occlusion of patent ductus arteriosus (PDA).
METHODSForty children with PDA were randomly divided into two groups (n=20 each): observed and control. The control group accepted traditional transcatheter occlusion, and the observed group received a modified management (angiography combined with TEE). The children in the observed group were monitored by realtime TTE.
RESULTSA complete occlusion was acquired by one occlusion operation in each child in the observed group. The TTE demonstrated that the occlusion device was in place, and that the blood flow velocities in the left and right pulmonary artery and the descending aorta were in normal ranges. There were shorter X-ray exposure time, shorter recovering time and less ICU stay time in the observed group than in the control group. The complications associated with blood vessel puncturation occurred in four children from the control group, but none of the observed group had the complications. The total hospitalization cost in the observed group was less than in the control group.
CONCLUSIONSAngiography combined with TEE as a modified management of the transcatheter occlusion of PDA is recommended.
Adolescent ; Cardiac Catheterization ; Cardiac Surgical Procedures ; methods ; Child ; Child, Preschool ; Ductus Arteriosus ; diagnostic imaging ; Ductus Arteriosus, Patent ; diagnostic imaging ; surgery ; Echocardiography ; Humans ; Infant ; Radiography
9.Comparision of sonographic findings and pathological features in ovarian thecoma.
Qing CHANG ; Yu-zhi HAO ; Ning WU ; Qiang ZHU ; Xun ZHANG ; Meng LI
Chinese Journal of Oncology 2008;30(6):473-475
OBJECTIVETo compare the sonographic findings with pathological features of ovarian thecoma, and to analyze the relationship between them.
METHODSThe sonograms of 45 ovarian thecoma cases were reviewed retrospectively and categorized into three subtypes as sound attenuation pattern, homogeneous hypoechoic pattern and solid and cystic mixed pattern. The pathological findings were classified as theca cell-predominant, fibroblast-predominant and mixed thecoma according to the cellular composition of the tumors. Hyaline degeneration and luteinization of the tumors were recorded. The pathologic findings of each subtype based on sonography were compared.
RESULTSOf the 45 patients, there were 34 (75.6%) solid ovarian lesions, 15 (33.3%) of those showed a sound-attenuation pattern with an anterior hypoechoic zone and posterior acoustic attenuation in sonography, the other 19 (42.2%) cases had homogeneous hypoechoic pattern with no posterior acoustic attenuation, and the remaining 11 (24.4%) cases presented as a solid and cystic mixed pattern. There were no significant differences in pathological cellular composition among the three sonographic subtypes. Five solid tumors containing hyaline degeneration and one with luteinization were found to have posterior acoustic attenuation. The solid and cystic mixed thecomas showed cystic degeneration and hemorrhage.
CONCLUSIONSolid ovarian thecomas usually have typical sonographic features, which may be associated with degeneration but not with cellular composition within the tumor.
Adult ; Aged ; Aged, 80 and over ; CA-125 Antigen ; blood ; Female ; Humans ; Middle Aged ; Ovarian Neoplasms ; blood ; classification ; diagnostic imaging ; pathology ; Retrospective Studies ; Thecoma ; blood ; classification ; diagnostic imaging ; pathology ; Ultrasonography, Doppler, Color ; methods ; Young Adult
10.A Chinese girl with fibrodysplasia ossificans progressiva caused by a de novo mutation R206H in ACVR1 gene.
Qing ZHOU ; Yan MENG ; Liang SU ; Shi-min ZHAO ; Hui-ping SHI ; Shang-zhi HUANG
Chinese Journal of Pediatrics 2008;46(3):215-219
OBJECTIVEFibrodysplasia ossificans progressiva (FOP) is a rare autosomal dominant inherited disease caused by mutations of ACVR1 gene and can be inherited from either mother or father. FOP is characterized by the presence of malformations of the big toes and of progressive extra-skeletal ossification. Direct sequence analyses of genomic DNA have demonstrated that there is an identical single nucleotide substitution (c617G-->A, R206H) in the glycine-serine (GS) activation domain of ACVR1 gene, responsible for all affected individuals reported so far. We report a Chinese girl with typical FOP characteristics, in whom the same mutation in ACVR1 was identified.
METHODSClinical diagnosis was based on physical examination, radiological findings, and biochemical tests. For mutation detection, peripheral blood was obtained with informed consent from the patient and the parents. Genomic DNA was extracted from peripheral blood using standard method. Exon 4 of ACVR1 was amplified by polymerase chain reaction (PCR), and the PCR products were subjected to automatic DNA sequencing.
RESULTSThe affected girl is 3-year-old and showed typical clinical manifestations of FOP. She had malformations of the halluces at birth and subsequently progressive extra-skeletal ossification developed at the age of 8 - 9 months. Then, she gradually developed stiffness of the knee joint and neck but remained ambulant. Radiographic changes were observable, e.g., the extra-skeletal ossification was found at cervical spine. Her mother has congenital malformations of the halluces, but had no postnatal progressive extra-skeletal ossification. Her father and other family members are normal. With direct sequencing of the PCR products, a G to A substitution at c617 of ACVR1 (R206H) was detected in the patient only but not in her parents. Paternity analysis suggested that it is a de novo mutation.
CONCLUSIONThis is the first case reported in a Chinese patient with FOP in the mainland of China, which was confirmed by direct sequencing. Although sporadic cases of FOP have been reported in diverse geographic and ethnic group, the mutations of ACVR1 c617 (R206H) are identical up to now. The presence of mutation hot spot facilitates molecular diagnosis in clinical practice. Genetic detection is important for FOP patients to avoid misdiagnosis and further damages, including those from medical intervention.
Activin Receptors, Type I ; genetics ; Asian Continental Ancestry Group ; genetics ; Base Sequence ; Child, Preschool ; Female ; Humans ; Molecular Sequence Data ; Myositis Ossificans ; genetics ; Point Mutation ; Sequence Analysis, DNA