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Shi YH, Huang QW, Zhu SM, Zhou YM, Zhang LJ, Huang WK, Shao JJ, Zhou JL, Zhang WT. Chemical profiling of Fritillariae thunbergii Miq prepared by different processing methods reveals two new quality markers: Zhebeininoside and imperialine-3-β-D-glucoside. J Ethnopharmacol 2022; 283:114670. [PMID: 34653522 DOI: 10.1016/j.jep.2021.114670] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/06/2020] [Revised: 08/23/2021] [Accepted: 09/19/2021] [Indexed: 06/13/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Fritillariae thunbergii Miq (FTM)exhibit versatile biological activities including the significant antitussive and expectorant activities. As a herbal medicine, the therapeutic effects of FTM may be expressed by multi-components which have complicated integration effects on multi-targets. With the time going, the different processing methods of FTM has been changed a lot. Thus,the study described the effect of processing methods to FTM and its quality. MATERIAL AND METHOD Studies were undertaken by using UHPLC-LTQ Orbitrap MS and pharmacodynamic models. All reagents were involved of analytical grade. While a HPLC-ELSD's method has been developed and validated, a certified Quality System is conformed to ICH requirements. The experimental animals followed the animal welfare guidelines. AIM OF THE STUDY We aimed to found the differences after the different processing methods of FTM, and to demonstrate the changes could be selected as quality control indicators, and established a method for simultaneous determination of these for quality control. RESULTS we have previously found two new steroidal alkaloids: zhebeininoside and imperialine-3-β-D-glucoside from the different processing methods of FTM, which is the difference between the different processing methods of FTM, mainly on the steroidal alkaloids. The activity analysis of zhebeininoside, imperialine-3-β-D-glucoside, verticine and verticinone showed that the mouse model of cough expectorant has antitussive effect. The positive drug selected was dextromethorphan syrup. The positive group showed biological activity, but the blank group showed nothing. The model group showed illness which means that the model was effective. There are two ways of the mechanism of action of the expectorant action which can make sputum thin, reduce its viscosity, and be easy to cough up, or can accelerate the movement of mucous cilia in the respiratory tract and promote the discharge of sputum. In our study, the content of phenol red was significantly reduced in the administration group. CONCLUSIONS To sum up, our results suggest that zhebeininoside and other three components cloud be selected as quality control indicators, and a method for simultaneous determination of zhebeininoside and other three components was established for quality control.
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Affiliation(s)
- Yu-Hua Shi
- Center of Safety Evaluation and Research, Hangzhou Medical College, Hangzhou, China, 2 Key Laboratory of Drug Safety Evaluation and Research of Zhejiang Province, Hangzhou Medical College (Zhejiang Academy of Medical Sciences), Hangzhou, 310053, China
| | - Qin-Wei Huang
- The Research Center of Chiral Drugs, Innovation Research Institute of Traditional Chinese Medicine (IRI), Shanghai University of Traditional Chinese Medicine, Shanghai, 201203, China
| | - She-Min Zhu
- The Research Center of Chiral Drugs, Innovation Research Institute of Traditional Chinese Medicine (IRI), Shanghai University of Traditional Chinese Medicine, Shanghai, 201203, China
| | - Yue-Mei Zhou
- School of Medicine, Zhejiang Chinese Medical University, Hangzhou, 311402, China
| | - Li-Jiang Zhang
- Center of Safety Evaluation and Research, Hangzhou Medical College, Hangzhou, China, 2 Key Laboratory of Drug Safety Evaluation and Research of Zhejiang Province, Hangzhou Medical College (Zhejiang Academy of Medical Sciences), Hangzhou, 310053, China
| | - Wen-Kang Huang
- Key Laboratory of Neuropsychiatric Drug Research of Zhejiang Province, Institute of Materia Medica, Hangzhou Medical College, Hangzhou, 310013, PR China
| | - Jin-Jin Shao
- Center of Safety Evaluation and Research, Hangzhou Medical College, Hangzhou, China, 2 Key Laboratory of Drug Safety Evaluation and Research of Zhejiang Province, Hangzhou Medical College (Zhejiang Academy of Medical Sciences), Hangzhou, 310053, China
| | - Jian-Liang Zhou
- School of Pharmacy, Hangzhou Normal University, Hangzhou, Zhejiang, 311121, China.
| | - Wen-Ting Zhang
- Department of Traditional Chinese Medicines, Zhejiang Institute for Food and Drug Control, Hangzhou, 310052, China.
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Jiang YS, Chen X, Xu M, Qiu ZB, Wang LM, Shao JJ, Qi HY. [Clinical analysis of surgical treatment of post-infarction left ventricular aneurysm: a series of 254 patients]. Zhonghua Wai Ke Za Zhi 2020; 58:369-374. [PMID: 32393004 DOI: 10.3760/cma.j.cn112139-20200203-00060] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To examine the efficacy of two surgical procedures on post-infarction left ventricular aneurysm. Methods: The clinic data of 254 patients with post-infarction left ventricular aneurysm, who underwent surgical ventricular reconstruction between January 1997 and December 2019 in Department of Cardiovascular Surgery, Nanjing Hospital Affiliated to Nanjing Medical University was analyzed retrospectively. There were 183 males and 71 females aged from 31 to 81 years, with a median age of 64.6 years. Based on the size of the ventricular aneurysm, there were 73 patient received linear reconstruction (linear group) and 181 patients received endoventricular patch plasty technique (patch plasty group). Ejection fraction, left ventricular systolic and end diastolic volume and left ventricular systolic and end diastolic volume index were recorded preoperatively, 2-week, 3-month, 1-year and 5-year after operation. The survival curves were plotted with Kaplan-Meier method and the survival rates were compared by Log-rank test. Results: All patients underwent surgery with a mean cardiopulmonay bypass duration of (92±32) minutes (44 to 196 minutes) and aortic cross clamp duration of (67±22) minutes (33 to 152 minutes).There were 9 perioperative deaths with a mortality rate of 3.5%. Angina pectoris of other cases are relief and heart function improved greatly. Five years after operation, the percentage of cardiac function (New Yord Heart Association) class Ⅲ to Ⅳ patients decreased from 96.1%(244/254) to 9.9%(16/161). There was no significant difference in survival rate between linear group and patch plasty group at 1-, 3-, 5-years postoperatively (96%, 91%, 77% vs. 96%, 90%, 79%, P=0.562). Ejection fraction increased from (39±10)% (range: 22% to 50%) preoperatively to (46±6)% (range: 39% to 54%) 1-year postoperatively in the linear group, while increased from (38±13)% (range: 26% to 51%) preoperatively to (50±6)% (range: 39% to 55%) in the patch plasty group. Conclusions: Left ventricular reconstruction is quite effective for patients with post-infarction left ventricular aneurysm. The choice of operative approaches is determined by the size and range of ventricular aneurysm. Both linear reconstruction and endoventricular patch plasty technique can got similarly surgical outcomes with near and late curative effect.
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Affiliation(s)
- Y S Jiang
- Department of Cardiovascular Surgery, Nanjing Hospital Affiliated to Nanjing Medical University, Nanjing First Hospital, Nanjing Cardiovascular Hospital, Nanjing 210006, China
| | - X Chen
- Department of Cardiovascular Surgery, Nanjing Hospital Affiliated to Nanjing Medical University, Nanjing First Hospital, Nanjing Cardiovascular Hospital, Nanjing 210006, China
| | - M Xu
- Department of Cardiovascular Surgery, Nanjing Hospital Affiliated to Nanjing Medical University, Nanjing First Hospital, Nanjing Cardiovascular Hospital, Nanjing 210006, China
| | - Z B Qiu
- Department of Cardiovascular Surgery, Nanjing Hospital Affiliated to Nanjing Medical University, Nanjing First Hospital, Nanjing Cardiovascular Hospital, Nanjing 210006, China
| | - L M Wang
- Department of Cardiovascular Surgery, Nanjing Hospital Affiliated to Nanjing Medical University, Nanjing First Hospital, Nanjing Cardiovascular Hospital, Nanjing 210006, China
| | - J J Shao
- Department of Cardiovascular Surgery, Nanjing Hospital Affiliated to Nanjing Medical University, Nanjing First Hospital, Nanjing Cardiovascular Hospital, Nanjing 210006, China
| | - H Y Qi
- Department of Cardiovascular Surgery, Nanjing Hospital Affiliated to Nanjing Medical University, Nanjing First Hospital, Nanjing Cardiovascular Hospital, Nanjing 210006, China
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Guo-Fang P, Yan-Zhong C, Chun-Lin F, Jin-Jie Z, Xue-Min L, Chu XG, Duan WZ, Gao XM, Hu XZ, Kamel A, Kubinec R, Lin AQ, Lin LY, Liu SM, Papadopoulou-Mourkidou E, Mu J, Pan JW, Pardue JR, Parfitt CH, Pavoni G, Saleh MA, Shao JJ, Song WB, Tahotna S, Tekel J, Tsai MC, Wang DN, Wang KO, Wong SS, Yu JX, Zhou Y, Zhu GN. Multiresidue Gas Chromatographic Method for Determining Synthetic Pyrethroid Pesticides in Agricultural Products: Collaborative Study. J AOAC Int 2020. [DOI: 10.1093/jaoac/82.1.186] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Abstract
Fourteen laboratories from 6 countries and regions participated in an international collaborative study to evaluate a multiresidue gas chromatographic (GC) method for determining 8 synthetic pyrethroid pesticides in grains, fruits, and vegetables. The study design was based on Youden’s matched-pairs principle for collaborative tests of analytical methods. Each laboratory analyzed 12 collaborative samples of wheat, oranges, and tomatoes as blind samples. Wheat samples were extracted with acetonitrile–water (2 + 1), while orange and tomato samples were extracted with acetone. Residues were partitioned into hexane, evaporated to dryness with a rotary evaporator, and then dissolved in hexane. The hexane extract was partitioned with acetonitrile and cleaned up on a 5% water-deactivated Florisil column with 6% ethyl ether in hexane as eluant. Residue concentrations were determined by GC with electron capture detection with split-less injection by comparison with single-point calibration standards. The appropriate standard concentration was determined by screening sample extracts before analysis. The multiresidue method was tested over the concentration range of 0.0951.909 mg/kg depending on the 8 different of pesticides and agricultural products analyzed in the collaborative study. Statistical analysis of data from 13 laboratories showed weighted average recoveries for 8 pyrethroids in wheat, oranges, and tomatoes at 0.105–1.909,0.095–1.909, and 0.105–0.954 mg/kg, respectively, ranging from 91.8 to 100.2%, from 88.1 to 100.6%, and from 88.2 to 101.5%, respectively. Reproducibility relative standard deviation values ranged from 6.46 to 17.74%, from 5.94 to 18.13%, and from 5.59 to 10.48%, respectively. Repeatability relative standard deviation values ranged from 6.34 to 10.84%, from 5.19 to 11.72%, and from 3.20 to 8.09%, respectively. The multiresidue GC method for determining synthetic pyrethroid pesticides in agricultural products has been adopted first action by AOAC INTERNATIONAL.
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Affiliation(s)
- Pang Guo-Fang
- Qinhuangdao Import and Export Commodity Inspection Bureau, 61 Haibin Rd, Qinhuangdao, Hebei, P.C. 066002, People's Republic of China
| | - Cao Yan-Zhong
- Qinhuangdao Import and Export Commodity Inspection Bureau, 61 Haibin Rd, Qinhuangdao, Hebei, P.C. 066002, People's Republic of China
| | - Fan Chun-Lin
- Qinhuangdao Import and Export Commodity Inspection Bureau, 61 Haibin Rd, Qinhuangdao, Hebei, P.C. 066002, People's Republic of China
| | - Zhang Jin-Jie
- Qinhuangdao Import and Export Commodity Inspection Bureau, 61 Haibin Rd, Qinhuangdao, Hebei, P.C. 066002, People's Republic of China
| | - Li Xue-Min
- Qinhuangdao Import and Export Commodity Inspection Bureau, 61 Haibin Rd, Qinhuangdao, Hebei, P.C. 066002, People's Republic of China
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Abstract
Context weighting is an important technology for genome compression. In this study, we discuss the relationship between the weighting of context models and the weighting of the description lengths corresponding to their respective context models. It indicates that weighting of context models is equivalent to the weighting of their description lengths. With these discussions, we present the weights optimization algorithm based on the minimum description length, and suggest implementing the least-square algorithm for the optimization of the weights. The proposed optimization algorithm is used in the compression of bacterial genome sequences. The experiment results indicate that by using the proposed weights optimization method, our context weighting-based genome compression algorithm can achieve better performance than context weighting-based algorithms reported in the literature.
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Affiliation(s)
- M Chen
- Department of Electronics, , , China.,Information Security College, , , China
| | - J J Shao
- Science and Technology College, , , China
| | - X M Jia
- Information Security College, , , China
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Xu Z, Shao J, Li L, Peng X, Chen M, Li G, Yan H, Yang B, Luo P, He Q. All-trans retinoic acid synergizes with topotecan to suppress AML cells via promoting RARα-mediated DNA damage. BMC Cancer 2016; 16:2. [PMID: 26728137 PMCID: PMC4700651 DOI: 10.1186/s12885-015-2010-6] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2015] [Accepted: 12/15/2015] [Indexed: 12/19/2022] Open
Abstract
Background Chemotherapy is the only therapy option for the majority of AML patients, however, there are several limitations for this treatment. Our aim was to find a new chemotherapy strategy that is more effective and less toxic. Methods MTT assays and a xenograft mouse model were employed to evaluate the synergistic activity of all-trans retinoic acid (ATRA) combined with topotecan (TPT). Drug-induced DNA damage and apoptosis were determined by flow cytometry analysis with PI and DAPI staining, the comet assay and Western blots. Short hairpin RNA (shRNA) and a RARα plasmid were used to determine whether RARα expression influenced DNA damage and apoptosis. Results We found that ATRA exhibited synergistic activity in combination with Topotecan in AML cells, and the enhanced apoptosis induced by Topotecan plus ATRA resulted from caspase pathway activation. Mechanistically, ATRA dramatically down regulated RARα protein levels and led to more DNA damage and ultimately resulted in the synergism of these two agents. In addition, the increased antitumor efficacy of Topotecan combined with ATRA was further validated in the HL60 xenograft mouse model. Conclusions Our data demonstrated, for the first time, that the combination of TPT and ATRA showed potential benefits in AML, providing a novel insight into clinical treatment strategies. Electronic supplementary material The online version of this article (doi:10.1186/s12885-015-2010-6) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Zhifei Xu
- Zhejiang Province Key Laboratory of Anti-Cancer Drug Research, Institute of Pharmacology and Toxicology, College of Pharmaceutical Sciences, Zhejiang University, 866 Yuhangtang Road, Zijingang Campus, Hangzhou, 310058, Zhejiang, People's Republic of China
| | - JinJin Shao
- Zhejiang Province Key Laboratory of Anti-Cancer Drug Research, Institute of Pharmacology and Toxicology, College of Pharmaceutical Sciences, Zhejiang University, 866 Yuhangtang Road, Zijingang Campus, Hangzhou, 310058, Zhejiang, People's Republic of China
| | - Lin Li
- Zhejiang Province Key Laboratory of Anti-Cancer Drug Research, Institute of Pharmacology and Toxicology, College of Pharmaceutical Sciences, Zhejiang University, 866 Yuhangtang Road, Zijingang Campus, Hangzhou, 310058, Zhejiang, People's Republic of China
| | - Xueming Peng
- Zhejiang Province Key Laboratory of Anti-Cancer Drug Research, Institute of Pharmacology and Toxicology, College of Pharmaceutical Sciences, Zhejiang University, 866 Yuhangtang Road, Zijingang Campus, Hangzhou, 310058, Zhejiang, People's Republic of China
| | - Min Chen
- Zhejiang Province Key Laboratory of Anti-Cancer Drug Research, Institute of Pharmacology and Toxicology, College of Pharmaceutical Sciences, Zhejiang University, 866 Yuhangtang Road, Zijingang Campus, Hangzhou, 310058, Zhejiang, People's Republic of China
| | - Guanqun Li
- Zhejiang Province Key Laboratory of Anti-Cancer Drug Research, Institute of Pharmacology and Toxicology, College of Pharmaceutical Sciences, Zhejiang University, 866 Yuhangtang Road, Zijingang Campus, Hangzhou, 310058, Zhejiang, People's Republic of China
| | - Hao Yan
- Zhejiang Province Key Laboratory of Anti-Cancer Drug Research, Institute of Pharmacology and Toxicology, College of Pharmaceutical Sciences, Zhejiang University, 866 Yuhangtang Road, Zijingang Campus, Hangzhou, 310058, Zhejiang, People's Republic of China
| | - Bo Yang
- Zhejiang Province Key Laboratory of Anti-Cancer Drug Research, Institute of Pharmacology and Toxicology, College of Pharmaceutical Sciences, Zhejiang University, 866 Yuhangtang Road, Zijingang Campus, Hangzhou, 310058, Zhejiang, People's Republic of China
| | - Peihua Luo
- Zhejiang Province Key Laboratory of Anti-Cancer Drug Research, Institute of Pharmacology and Toxicology, College of Pharmaceutical Sciences, Zhejiang University, 866 Yuhangtang Road, Zijingang Campus, Hangzhou, 310058, Zhejiang, People's Republic of China.
| | - Qiaojun He
- Zhejiang Province Key Laboratory of Anti-Cancer Drug Research, Institute of Pharmacology and Toxicology, College of Pharmaceutical Sciences, Zhejiang University, 866 Yuhangtang Road, Zijingang Campus, Hangzhou, 310058, Zhejiang, People's Republic of China.
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Qiao YF, Guo WJ, Li L, Shao S, Qiao X, Shao JJ, Zhang Q, Li RS, Wang LH. Melatonin attenuates hypertension-induced renal injury partially through inhibiting oxidative stress in rats. Mol Med Rep 2015; 13:21-6. [PMID: 26531807 PMCID: PMC4686099 DOI: 10.3892/mmr.2015.4495] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2014] [Accepted: 06/25/2015] [Indexed: 12/31/2022] Open
Abstract
The aim of the present study was to investigate the protective effects of melatonin (MLT) on hypertension-induced renal injury and identify its mechanism of action. Twenty-four healthy male Wistar rats were divided into a sham control group (n=8), which was subjected to sham operation and received vehicle treatment (physiological saline intraperitoneally at 0.1 ml/100 g), a vehicle group (n=8), which was subjected to occlusion of the left renal artery and vehicle treatment, and the MLT group (n=8), which was subjected to occlusion of the left renal artery and treated with MLT (10 mg/kg/day). Pathological features of the renal tissues were determined using hematoxylin and eosin staining and Masson staining. Urine protein, serum creatinine (Scr), superoxide dismutase (SOD) and malondialdehyde (MDA) were determined. Immunohistochemical analysis was performed to determine the expression of heme oxygenase-1 (HO-1), intercellular adhesion molecule-1 (ICAM-1), inducible nitric oxide synthase (iNOS) and endothelial nitric oxide synthase (eNOS). Furthermore, reverse transcription polymerase chain reaction was conducted to determine the mRNA expression of HO-1, ICAM-1, eNOS and iNOS. A marked decrease in blood pressure was noticed in the MLT group at week 4 compared with that of the vehicle group (P<0.01). Furthermore, MLT treatment attenuated the infiltration of inflammatory cells and oedema/atrophy of renal tubules. MLT attenuated hypertension-induced increases in urine protein excretion, serum creatinine and MDA as well as decreases in SOD activity in renal tissues. Furthermore, MLT attenuated hypertension-induced increases in iNOS and ICAM-1 as well as decreases in eNOS and HO-1 expression at the mRNA and protein level. In conclusion, the results of the present study indicated that MLT had protective roles in hypertension-induced renal injury. Its mechanism of action is, at least in part, associated with the inhibition of oxidative stress.
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Affiliation(s)
- Yu-Feng Qiao
- Department of Nephrology, Second Hospital of Shanxi Medical University, Taiyuan, Shanxi 030001, P.R. China
| | - Wen-Juan Guo
- Department of Nephrology, Second Hospital of Shanxi Medical University, Taiyuan, Shanxi 030001, P.R. China
| | - Lu Li
- Department of Nephrology, Baoding No. 1 Hospital, Baoding, Hebei 071000, P.R. China
| | - Shan Shao
- Department of Nephrology, Second Hospital of Shanxi Medical University, Taiyuan, Shanxi 030001, P.R. China
| | - Xi Qiao
- Department of Nephrology, Second Hospital of Shanxi Medical University, Taiyuan, Shanxi 030001, P.R. China
| | - Jin-Jin Shao
- Department of Nephrology, Second Hospital of Shanxi Medical University, Taiyuan, Shanxi 030001, P.R. China
| | - Qiong Zhang
- Department of Nephrology, Shanxi People's Hospital, Taiyuan, Shanxi 030001, P.R. China
| | - Rong-Shan Li
- Department of Nephrology, Shanxi People's Hospital, Taiyuan, Shanxi 030001, P.R. China
| | - Li-Hua Wang
- Department of Nephrology, Second Hospital of Shanxi Medical University, Taiyuan, Shanxi 030001, P.R. China
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Abstract
In this prospective study a total of 80 consecutive Chinese patients with Crowe type I or II developmental dysplasia of the hip were randomly assigned for hip resurfacing arthroplasty (HRA) or total hip replacement (THR). Three patients assigned to HRA were converted to THR, and three HRA patients and two THR patients were lost to follow-up. This left a total of 34 patients (37 hips) who underwent HRA and 38 (39 hips) who underwent THR. The mean follow-up was 59.4 months (52 to 70) in the HRA group and 60.6 months (50 to 72) in the THR group. There was no failure of the prosthesis in either group. Flexion of the hip was significantly better after HRA, but there was no difference in the mean post-operative Harris hip scores between the groups. The mean size of the acetabular component in the HRA group was significantly larger than in the THR group (49.5 mm vs 46.1 mm, p = 0.001). There was no difference in the mean abduction angle of the acetabular component between the two groups. Although the patients in this series had risk factors for failure after HRA, such as low body weight, small femoral heads and dysplasia, the clinical results of resurfacing in those with Crowe type I or II hip dysplasia were satisfactory. Patients in the HRA group had a better range of movement, although neck-cup impingement was observed. However, more acetabular bone was sacrificed in HRA patients, and it is unclear whether this will have an adverse effect in the long term.
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Affiliation(s)
- Q Wang
- Shanghai Jiao Tong University, Department of Orthopedics, Shanghai Sixth People's Hospital, 600 Yi Shang Road, Shanghai 200233, China
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Zhang W, Yu H, Wang X, Wang Q, Lu R, Wang HQ, Shao JJ. [Analysis of the nucleotide sequence for C and NS5 regions and the genotype of HCV isolate in Shandong Province]. Zhonghua Shi Yan He Lin Chuang Bing Du Xue Za Zhi 2001; 15:219-21. [PMID: 11986688] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/24/2023]
Abstract
OBJECTIVE To study the genotype of HCV epidemic strains in Shandong Province. METHODS HCV fragments of C(432 bp) and NS5(319 bp) regions were amplified by RT nested PCR. The fragments were cloned to T vector and sequenced by dideoxynucleotide chain termination reaction. RESULTS Three of all 4 strains in C region were 1b genotype, and 1 was 2a. All of 10 strains of NS5 region were 1b genotype. No other genotype was found in this region. The homology of nucleotide sequence was over 90% compared with that of more than 50 strains in Gen Bank. CONCLUSIONS The major genotype of HCV epidemic strains in Shandong Province is 1b. The 2a genotype is also found in this area.
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Affiliation(s)
- W Zhang
- Key Laboratory of Molecular Virology, Medical College of Qingdao University, Qiangdao 266021, China
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Yu JX, Hu XZ, Shao JJ, Sun BG, Qian HM, Wu CY. [Determination of residues of 20 kinds of organochlorinated pesticides in oils, fruits and vegetables by wide-bore capillary gas chromatographic column]. Se Pu 2000; 18:346-9. [PMID: 12541515] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/28/2023] Open
Abstract
A rapid and high performance gas chromatographic method for the determination of 20 organchlorinated pesticides in oils, fruits and vegetables has been developed. The samples of fruits and vegetables were extracted with petroleum ether-acetone, while those of oils were extracted with acetonitrile-hexane. The extract was purified by Florisil column with ethyl ether-hexane(15:85, V/V) or ethyl ether-petroleum ether(15:85, V/V) as eluent. Chromatographic analysis was performed on wide-bore capillary column with ECD detector. Satisfactory separation and detection of these organchlorinated pesticides are presented with the proposed method. The detection limits of this method were 1.0 ng/g-20.0 ng/g(S/N = 5), the recoveries 83.2%-106.8% and the relative standard deviations 2.0%-9.5%.
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Affiliation(s)
- J X Yu
- Hubei Import & Export Commodity Inspection Bureau, Wuhan 430022, China
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Yu H, Su L, Shao JJ. [Genetic subtyping of HIV-1 strains by heteroduplex mobility assay]. Zhonghua Liu Xing Bing Xue Za Zhi 1997; 18:201-4. [PMID: 9812517] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/09/2023]
Abstract
DNA fragments of HIV-1 env gene were amplified by nested PCR from uncultured peripheral blood mononuclear cells (PBMCs) obtained from 24 HIV-1 infected individuals. The PCR products were separated by melting and annealing with denatured PCR product prepared from reference plasimd of representative subtypes. Heteroduplex were then formed between the single-stranded DNA from the two sources and were analysed on polyacrylamide gels. The results from heteroduplex mobility assay (HMA) were compared with HIV-1 subtype results determined by DNA sequencing. With advantages of high speed, low cost and high specificity, HMA is a reliable screening method for HIV-1 subtyping.
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Affiliation(s)
- H Yu
- Institute of Virology, CAPM, Beijing
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11
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Shao JJ, Wu AJ, Zheng YH, Weng FM, Xie Y, Zhang TB. [Clinical anti-caries effect of dentifrice containing two fluorides]. Shanghai Kou Qiang Yi Xue 1992; 1:80-3. [PMID: 15159896] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 04/29/2023]
Abstract
Anti-caries effect of dentifrice containing sodium monofluorophophate and sodium fluoride was studied among 2-3 years OLD nursery children.After one year,both mean dft and dfs were very significantly lower than those of control groups.
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Affiliation(s)
- J J Shao
- Shanghai Institute of Stomatology. Shanghai 200011,China
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Zhao CQ, Shao JJ. [Detection of specific antibodies to cytomegalovirus in the blood donors in Qingdao]. Zhonghua Liu Xing Bing Xue Za Zhi 1989; 10:78-81. [PMID: 2544278] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
The detection of cytomegalovirus (CMV) infection in the blood donors in China has not been reported the literature available at hands. 344 serum samples from healthy blood donors in Qingdao were examined for the presence of CMV-IgG by IFA and CMV-IgM, CMV-IgA by ELISA. The frequency of positive donors was 99,45%, 4,65%, and 3,20%, respectively. The result showed CMV infection was rather common in the donors, the rate of active CMV infection was also higher than that abroad. We suggest that when blood is transfused to high risk patients, CMV-IgM and CMV-IgA should be examined regularly on donors to exclude or reduce the incidence of transfusion-associated CMV infection. At present it is not practical for CMV-IgG as a screening marker in our country.
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