2.Study on secondary metabolites of endophytic fungi Penicillium dangeardii.
Hai-ning LV ; Guang-zhi DING ; Yun-bao LIU ; Jing QU
China Journal of Chinese Materia Medica 2015;40(9):1759-1761
Endophytic fungi Penicillium dangeardii, isolated from Lysidice rhodostegia Hance root, was fermented and the secondary metabolites were studied. By means of Sephadex LH-20 column chromatography, ODS column chromatography and PHPLC over the fermented culture, 5 compounds were isolated. By using ESI-MS and NMR, the structures of the compounds were determined as N-[9-(β- D-ribofuranosyl)-9H-purin-6-yl]-L-aspartic acid (1), 3-caffeoylquinic acid (2), 4-caffeoylquinic acid (3), and 5-caffeoylquinic acid (4), 3-hydroxy-benzoic acid-4-O-β-D-glucopyranoside (5).
Biological Factors
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chemistry
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isolation & purification
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metabolism
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Endophytes
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chemistry
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metabolism
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Fabaceae
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microbiology
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Fermentation
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Molecular Structure
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Penicillium
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chemistry
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metabolism
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Secondary Metabolism
3.RESEARCH ON THE TESTING OF PORCINE REPRODUCTIVE AND RESPIRATORY SYNDROME VIRUS BY NESTRT-PCR
Yun ZHAO ; Guang-Chuan ZHANG ; Yu-Ming QIN ; Yi-Bao NING ; Qin WANG ;
Microbiology 1992;0(06):-
Three primer were designed based on the consevered area of the genetic of the ATCC VR-2332 strain and LV strain. And the nest RT-PCR of testing porcine reproductive and respiratory syndrome virus were developed. The nest RT-PCR against ATCC VR-2332 strain, LV strain and B13 strain were done by this method.The DNA fragment were obtained specially from the three strains isolated from different region. The size were 430bp (430bp) , 410bp (413bp) and 410 bp (413bp) separately. But the DNA fragment were not obtained from HCV, PPV and PRV. Its sensitivity was 10-2 TCID50. It's sensitivity increased 10000 times than one step RT-PCR. It should make the method of testing porcine reproductive and respiratory syndrome virus more sensitive, fast and accurate.
4.Differentiation Between Vaccine Strain and Field Isolates of Classical Swine Fever Virus Using Polymerase Chain Reaction and Restriction Test
Yun ZHAO ; Yu-Ming QIN ; Guang-Chuan ZHANG ; Qi-Zu ZHAO ; Yi-Bao NIN ;
Microbiology 1992;0(03):-
A nest RT-PCR/restriction test has been developed in order to distinguish the lapinised vaccine strain from field isolates of classical swine fever virus. The restriction enzyme cut sites mapping of the major coding sequence of E2 gene lapinised vaccine strain and ShiMen strain of classical swine fever virus have been compared. Ten and sixteen unique restriction markers have been found in the lapinised vaccine strain and ShiMen strain. The restriction enzyme cut sites mapping of the twenty six unique restriction marker in the major coding sequence of E2 gene of 17 classical swine fever field isolates have been analyzed. Only 3 sites (HgaI、Hin8I及Hsp92I) are present in the lapinised vaccine strain sequence. Two pans of nested primers and a criteria of analysis have been designed for HgaI restriction marker site. The tests have been conducted first on the lapinised vaccine strain and ShiMen strain of classical swine fever virus resulting in predicted restrection patterns. Finally, the tests have been applied to 5 field isolates of different gene group analyzed by phylogenetic study. The result showed that only HCLV strain gene can be cut to 2 fragment by Hgal , and ShiMen strain and 5 field isolates cant be cut At the same time the sensitivity and specificity of nest RT-PCR have been tested. The sensitivity is 0. 2MLD. The specific fragment of BDV and BVDV were not obtained by the nest RT-PCR. These results showed that the development of the nest RT-PCR/restriction tests is very important for the control and perish of classical swine fever in china.
5.Clinical application of maxillary sinus augmentation, bone graft and simultaneously placement of implant with trephine bur.
Yun-fei HUANG ; Lei ZHOU ; Guang-bao SONG
Chinese Journal of Stomatology 2004;39(2):153-154
OBJECTIVETo introduce and evaluate the procedure and the effect of localized management of sinus floor (LMSF), bone graft and simultaneous implant placement with trephine bur in maxillary posterior region.
METHODS24 patients without enough alveolar bone height received LMSF, bone grafting and implants placement were carried out simultaneously.The autogenous bone were harvested by trephine bur in situ. Patients were followed up after 1 week, 1, 3 and 6 month.
RESULTSThere was no implant loose or lost and maxillary antritis. 6 months postoperatively, bone graft reformed to new bone seen in X-ray films, sinus floors were augmented and reached the requirements of dental implants. The implant osseointegrated tightly with new bone which was satisfactory to second-step prosthesis after implant placement of 6 months later.
CONCLUSIONSThe method enlarges the indication of dental implants and avoids operation of harvesting autogenous bone in other site. It is simple and valuable to clinical application.
Adult ; Alveolar Ridge Augmentation ; methods ; Bone Transplantation ; Dental Implantation, Endosseous ; methods ; Dental Implants ; Female ; Humans ; Male ; Maxillary Sinus ; surgery ; Middle Aged
6.Low-grade (fibromatosis-like) spindle cell carcinoma of the breast: case report and review of the literature.
Feng TANG ; Dong-hua GU ; Yun BAO ; Hong WANG ; Hong-guang ZHU ; Zu-de XU ; Xi-qi HU
Chinese Journal of Pathology 2005;34(7):444-445
Breast Neoplasms
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metabolism
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pathology
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surgery
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Carcinoma
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metabolism
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pathology
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surgery
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Diagnosis, Differential
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Female
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Fibroma
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metabolism
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pathology
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surgery
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Humans
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Keratins
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metabolism
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Middle Aged
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Vimentin
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metabolism
7.Relationship between oral and gastric Hp infection and diseases of upper digestive tract in children.
Yun-guang BAO ; Yi WEI ; Ai-su LANG ; Wei-jun YU ; Ai-juan YING ; Lin-qing MU ; Hui-xian YANG
Chinese Journal of Pediatrics 2003;41(6):465-466
Adolescent
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Child
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Child, Preschool
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Female
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Gastric Mucosa
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microbiology
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Gastrointestinal Diseases
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diagnosis
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microbiology
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Helicobacter Infections
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diagnosis
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microbiology
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Helicobacter pylori
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growth & development
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isolation & purification
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Humans
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Infant
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Male
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Mouth Mucosa
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microbiology
8.Effect of topiramate and carbamazepine on bone metabolism in children with epilepsy.
Jing ZHANG ; Kai-Xuan WANG ; Yi WEI ; Min-Hui XU ; Jin-Mei SU ; Yun-Guang BAO ; Shi-Yong ZHAO
Chinese Journal of Contemporary Pediatrics 2010;12(2):96-98
OBJECTIVETo assess bone health in epileptic children who have been treated with topiramate (TPM) or carbamazepine (CBZ).
METHODSSixty-three epileptic children who received TPM or CBZ treatment and 36 eileptic children who did not receive any drug treatment (control group) were enrolled. Bone mineral density (BMD) at lumbar vertebrae (L1-L4) and radius-ulna was evaluated by the dual-energy X-ray absorptiometry method. Biochemical indices of bone metabolism, including serum calcium, phosphorus and alkaline phosphatase contents were measured.
RESULTSThe serum calcium content was higher in the TPM group (2.41+/-0.17 mmol/L), but it was lower in the CBZ group (2.15+/-0.26 mmol/L) than that (2.26+/-0.11 mmol/L) in the control group (p<0.05). The serum phosphorus content in both the TPM (1.55+/-0.17 mmol/L) and the CBZ groups (1.52+/-0.26 mmol/L) was significantly lower than that in the control group (1.70+/-0.30 mmol/L) (p<0.05). There were no significant differences in the serum content of alkaline phosphatase between three groups. BMD was significantly reduced in both the TPM and the CBZ groups when compared to the control group (p<0.05).
CONCLUSIONSTPM and CBZ may result in alterations in serum contents of calcium, phosphorus and alkaline phosphatase as well as BMD reduction.
Adolescent ; Alkaline Phosphatase ; blood ; Anticonvulsants ; adverse effects ; Bone Density ; drug effects ; Bone and Bones ; drug effects ; metabolism ; Calcium ; blood ; Carbamazepine ; adverse effects ; Child ; Child, Preschool ; Epilepsy ; drug therapy ; metabolism ; Female ; Fructose ; adverse effects ; analogs & derivatives ; Humans ; Male ; Phosphorus ; blood
9.Antiangiogenic therapy with bevacizumab in recurrent malignant gliomas: analysis of the response and core pathway aberrations.
Wei ZHANG ; Xiao-guang QIU ; Bao-shi CHEN ; Shou-wei LI ; Yun CUI ; Huan REN ; Tao JIANG
Chinese Medical Journal 2009;122(11):1250-1254
BACKGROUNDBevacizumab, a humanized monoclonal antibody against vascular endothelial growth factor, has shown promising activity in recurrent malignant gliomas. We reported the treatment response for the combination of bevacizumab and chemotherapy in a series of six patients with recurrent malignant glioma and investigated the molecular alterations in cancer pathways using the surgical biopsies from these patients.
METHODSStandard therapy with primary resection followed by adjuvant chemoradiotherapy had failed in all patients. Bevacizumab was administered at a dose of 10 mg/kg every 2 weeks. Concomitantly, four patients received temozolomide (50 mgxm(-2)xd(-1)), one patient irinotecan (125 mg/m(2) every 2 weeks) and one patient topotecan (1.2 mgxm(-2)xd(-1)). Response to therapy was mainly determined by magnetic resonance imaging. The expression of Ras, phosphorylated mitogen activated protein kinase (p-MAPK), phosphorylated AKT (p-AKT), phosphorylated mammalian target of rapamycin (p-mTOR) and phosphorylated signal transducer and activator of transcription 3 (p-STAT3) were semiquantitatively assessed by immunohistochemistry using surgical biopsies before the initial treatment.
RESULTSFive of the six patients had a radiographic response. Three were complete response, and two were partial response. Only one patient had progressive disease. The 6-month progession-free survival (PFS) was 33% and the median PFS was 15 weeks, with a range of 6 to more than 60 weeks. Of the three core pathways analyzed in this study, the Ras/MAPK and phosphatidylinositol-3-kinase (PI3K)/AKT/mTOR pathways were more likely to be associated with the treatment response to bevacizumab. In two younger patients (ages < 50) with complete response, simultaneous overexpression of p-MAPK, p-AKT and p-mTOR might be the crucial feature.
CONCLUSIONSBevacizumab in combination with chemotherapeutic agents may be an effective strategy for patients with recurrent malignant glioma. Activated MAPK and AKT might be possible biomarkers for selecting suitable patients for this targeted therapy.
Adolescent ; Adult ; Angiogenesis Inhibitors ; therapeutic use ; Antibodies, Monoclonal ; therapeutic use ; Antibodies, Monoclonal, Humanized ; Antineoplastic Agents, Phytogenic ; pharmacology ; Antineoplastic Combined Chemotherapy Protocols ; Bevacizumab ; Camptothecin ; analogs & derivatives ; therapeutic use ; Disease-Free Survival ; Female ; Glioma ; drug therapy ; metabolism ; mortality ; pathology ; Humans ; Immunohistochemistry ; Magnetic Resonance Imaging ; Male ; Middle Aged ; Young Adult
10.Prognostic value of PSA kinetics in locally advanced prostate cancer treated by maximal androgen blockade combined with brachytherapy.
Yong LUO ; Neng-Bao WEI ; Jia-Hui ZHAO ; Xin-Hao CUI ; Ming-Chuan LI ; Yun-Hua LIN ; Zhu HOU ; Yi-Li HAN ; Yong-Guang JIANG
National Journal of Andrology 2014;20(3):229-233
OBJECTIVETo evaluate the effect of post-treatment PSA kinetics on the prognosis of prostate cancer (PCa).
METHODSWe retrospectively reviewed the clinical data of 114 cases of locally advanced PCa treated by maximal androgen blockade (MAB) combined with brachytherapy, and analyzed the association of the changes in PSA kinetics with the prognosis of the patients.
RESULTSThe median survival time of the patients was 81 (15 - 144) months, with 1-, 3- and 5-year survival rates of 91. 23%, 78.07% and 68.42% , respectively. Univariate analysis indicated that the baseline PSA level, PSA nadir, the time of PSA decreasing to nadir, PSA doubling time, and the extent of PSA declining were all predictive factors for the survival time of the PCa patients. Multivariate analysis demonstrated that PSA nadir, the time of PSA decreasing to nadir, and the extent of PSA declining were three independent prognostic factors, which prolonged the long-term survival of the patients by 1.7, 3.2 and 6.8 times, respectively.
CONCLUSIONFor locally advanced PCa treated by MAB combined with brachytherapy, PSA nadir <1 micro g/L, the time to nadir <3 months, and the extent of PSA declining >96% are independent prognostic factors.
Aged ; Aged, 80 and over ; Androgens ; administration & dosage ; therapeutic use ; Brachytherapy ; Humans ; Male ; Middle Aged ; Prognosis ; Prostate-Specific Antigen ; metabolism ; Prostatic Neoplasms ; metabolism ; therapy ; Retrospective Studies