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DMRT, a gene family related to sexual determination, encodes a large group of transcription factors (DMRTs) with the double-sex and mab-3 (DM) domain (except for DMRT8), which is able to bind to and regulate DNAs. Current studies have shown that the DMRT gene family plays a critical role in the development of sexual organs (such as gender differentiation, gonadal development, germ cell development, etc.) as well as extrasexual organs (such as musculocartilage development, nervous system development, etc.). Additionally, it has been suggested that DMRTs may be involved in the cancer development and progression (such as prostate cancer, breast cancer, lung cancer, etc.). This review summarizes the research progress about the mammalian DMRTs' structure, function and its critical role in cancer development, progression and therapy (mainly in human and mice), which suggests that DMRT gene could be a candidate gene in the study of tumor formation and therapeutic strategy.
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Male , Animals , Humans , Mice , Transcription Factors/genetics , Mammals/metabolism , Cell Differentiation , Neoplasms/geneticsABSTRACT
@#【Objective】To investigate the expression of FosB in invasive breast cancer and its correlation to the ultrasound findings and clinical significance.【Methods】Immunohistochemical and ultrasound examination were performed for 155 cases with invasive breast cancer，36 cases with paracancerous tissue and 30 cases with normal breast tissue. To investigate the correlations between the different expression of FosB with histological grade ，lymph nodes，and ultrasound findings.【Results】①The expression of FosB in paracancerous tissue and normal breast tissue was higher than that in invasive breast cancer（P＜0.01）. ②Based on immunohistochemical staining，high positive expression rate of FosB was associated with low histological grade，ER positive and PR positive（P＜0.05）. There was no correlation between FosB and age，tumor diameter，lymph nodes，Her2 and clinical stages（P＞0.05）③The expression of FosB was higher in microcalcification positive and lymph nodes bigger tissues（P＜0.05）. There was no correlation between FosB and tumor size， regular shape，boundary，posterior attenuation ratio and blood flow（P＞0.05）.【Conclusion】The expression of FosB in invasive breast cancer was lower than that in paracancerous tissue and normal breast tissue. The different expression of FosB was correlated with histological grade，ER positive and PR positive. To study the expression of FosB in invasive breast cancer may be helpful for differential diagnosis and targeted treatment. The different expression of FosB was correlated with microcalcification，lymph nodes，and combined FosB with ultrasound findings may contribute to prognostic evaluation of breast cancer.
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@#【Objective】ToinvestigatetheexpressionandclinicalsignificanceofJunDinmolecularsubtypesofinva⁃ sivebreastcarcinoma，benignandmalignantbreastlesions.【Methods】Immunohistochemicalexaminationwasperformed for160patientswithinvasivebreastcarcinoma，191patientswithbreastintraductalproliferativelesionsand20patients withnormalbreasttissue.【Results】①ComparisonwithothersubtypesshowedthattheexpressionofJunDwassignificantly increasedinTBNCsubtype（P＜0.05）anddifferencesbetweenothersubtypeswerenotstatisticallysignificant（P＞0.05） . ②TheexpressionofJunDininvasivebreastcarcinomawaslowerthanthatinbreastintraductalproliferativelesionsand normalbreasttissuse（P <0.01） .③Basedonimmunohistochemicalstaining，highpositiveexpressionrateofJunDwas associatedwithlowhistologicalgrade（P <0.01）.ThereisnocorrelationbetweenJunDandtumordiameter，age，lymph nodes，ER，PRandhistologicalgrade（P >0.05） .【Conclusions】TheexpressionofJunDwassignificantlyincreasedin TBNCsubtype.TostudytheexpressionofJunDinTBNCsubtypeofinvasivebreastcarcinomamayprovideanevaluation intargetedtreatment.ThedifferentexpressionofJunDinbenignandmalignantbreastlesionsmaybehelpfulfortheir differentialdiagnosis.
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Health Human Resource Development Cooperation(HHRDC) is a critical component in Chinese foreign aid,which had cultivated thousands of health workers for Asian and Arican developing countries by on-job training,degree education,short-term exchange activities for more than 60 years.This paper systematically reviewed the management mechanism,mode and features of HHRDC via literature review,stakeholders interviews and field investigations,and it is found that the main mode of HHRDC is short-term on-job training,but its effect for capacity building is limited;although degree education account for a small proportion of HHRDC,it plays an important role for elite cultivation;the impact for medical team teaching and technical cooperation have become more obvious;the "going out" training have less invest,short period,but bigger social impact.The main challenges of HHRDC includes the deficiency of specific strategies and action plans;the lack of understanding on recipient countries' health human resource situation,characteristics and needs;the alignment with other aid programs;the lack of timely evalu ation towards current cooperation projects.According to the need analysis of undeveloped countries,it is suggested that a cooperation plan for HHDRC is required;the implementation of HHRDC should integrate into other aid programs;the follow-up mechanism and evaluation system need improved;the Chinese degree certification and qualification in local institutions need promoted;the aid to medical educational institutions should added,thereby strengthening developing countries' capacity and realizing common development.
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Health Human Resource Development Cooperation(HHRDC) is a critical component in Chinese foreign aid,which had cultivated thousands of health workers for Asian and Arican developing countries by on-job training,degree education,short-term exchange activities for more than 60 years.This paper systematically reviewed the management mechanism,mode and features of HHRDC via literature review,stakeholders interviews and field investigations,and it is found that the main mode of HHRDC is short-term on-job training,but its effect for capacity building is limited;although degree education account for a small proportion of HHRDC,it plays an important role for elite cultivation;the impact for medical team teaching and technical cooperation have become more obvious;the "going out" training have less invest,short period,but bigger social impact.The main challenges of HHRDC includes the deficiency of specific strategies and action plans;the lack of understanding on recipient countries' health human resource situation,characteristics and needs;the alignment with other aid programs;the lack of timely evalu ation towards current cooperation projects.According to the need analysis of undeveloped countries,it is suggested that a cooperation plan for HHDRC is required;the implementation of HHRDC should integrate into other aid programs;the follow-up mechanism and evaluation system need improved;the Chinese degree certification and qualification in local institutions need promoted;the aid to medical educational institutions should added,thereby strengthening developing countries' capacity and realizing common development.
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Saposhnikoviae divaricata (Turcz.) Schischk (SD) is a traditional Chinese herb commonly used to treat clinical conditions such as rheumatism and allergic rhinitis. This review article evaluates a collection of works on in vitro and biochemical studies of SD. The discourse on the diverse class of chromones and coumarins in SD offers an insight to the pharmacological effects of these bioactive constituents as anti-inflammatory, analgesic, immunoregulatory, antioxidative, and anti-proliferative agents. It is highlighted that there is a structural relationship between the constituents and bioactive activities, which in effect provides a valid reasoning and reaffirm the use of SD in the treatment of the pathologies in Chinese medicine.
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Animals , Humans , Apiaceae , Chemistry , Drugs, Chinese Herbal , Chemistry , Pharmacokinetics , PharmacologyABSTRACT
<p><b>OBJECTIVE</b>To explore the distribution characteristics of Chinese medicine (CM) syndromes and the rule of dynamic evolvement in patients with colorectal cancer at the perioperative period by applying a mathematical statistics methodology.</p><p><b>METHODS</b>By using the overall sample date, and cross-sectional descriptive and prospective researching methods, the clinical data of CM symptoms of patients with colorectal cancer from the first day of preoperative care to the third, seventh, and tenth days after the operation were collected. The distribution characteristics of CM syndromes and dynamic evolution were concluded upon by experts, and then by building up a database through the use of EpiData3.1 the frequency statistics and cluster analyses were applied utilizing SAS9.2 software.</p><p><b>RESULTS</b>Among 210 cases of patient, on the day before the operation, the main route of syndrome was blood deficiency (33.33%), followed by the syndrome of deficiency of both qi and yin (28.57%). On the third day after surgery, the main syndrome was qi deficiency (47.62%), followed by yin deficiency inner-heat. On the seventh day after surgery, the main syndrome was both yin deficiency inner-heat (33.33%) and phlegm-dampness (33.33%). On the tenth day after surgery, the main syndrome was a deficiency of both qi and yin (38.09%), followed by dampness and hot accumulative knotting (33.33%).</p><p><b>CONCLUSION</b>Research in the field of the distribution characteristics of CM syndromes and dynamic evolution will provide an objective basis for syndrome differentiation for patients in the perioperative period, further advancing the study of preventing and decreasing relapse and metastasis in CM therapy.</p>
Subject(s)
Adult , Aged , Aged, 80 and over , Female , Humans , Male , Middle Aged , Young Adult , Cluster Analysis , Colorectal Neoplasms , General Surgery , Medicine, Chinese Traditional , Perioperative Care , Postoperative Care , SyndromeABSTRACT
This study aims to investigate the distribution patterns of mosquito-borne viruses in Menghai County, Xishuangbanna Prefecture, Yunnan Province, China and to provide evidence for the prevention and control of mosquito-borne diseases. Mosquito samples were collected using mosquito lamps. Viruses were isolated from the samples by cell culture, and the isolates were identified by RT-PCR. The genomes of isolates were sequenced for phylogenetic analysis. In July 2012, a total of 1468 mosquitoes were captured in Daluo Town of Menghai County; they were divided into 32 pools, including Culex tritaeniorhynchus (28 pools, 1383 mosquitoes), Culex quinquefasciatus (2 pools, 66 mosquitoes), and Anopheles (2 pools, 19 mosquitoes). Golden hamster kidney cells (BHK-21) and Aedes albopictus cells (C6/36) were used for virus isolation. The results showed that C6/36 cells were susceptible to two isolates recovered from Culex tritaeniorhynchus (BNDL1205 and BNDL1227), with marked cytopathic effect (CPE) of cell fusion. By contrast, the two isolates could not cause CPE in BHK-21 cells. RT-PCR was performed for the two isolates using the flavivirus-specific primers FU2/cFD3, and a 800-bp amplicon was obtained from both of them. Phylogenetic analysis showed that the two isolates shared the same evolutionary branch with the Quang Binh virus (QBV) strain VN180, which had been isolated from Vietnam, with nucleotide sequence homologies of 83.4% and 82.9%, respectively. However, there existed relatively large differences in nucleotide sequence between them and other Culex flavivirus strains previously isolated in China and other regions. In light of the similarity between the two isolates and QBV, BNDL1205 and BNDL122 were referred to as Quang Binh-like virus, which were first reported in China.
Subject(s)
Animals , Cricetinae , Cell Line , China , Culicidae , Virology , Evolution, Molecular , Insect Viruses , Physiology , Phylogeny , Sequence HomologyABSTRACT
Objective To study the influence of arsenic exposure on menstruation.Methods A cluster sampling method was applied to select the subjects of women aged 10 to 65 from Linhe,Hangjinhouqi and Wuyuan counties in Inner Mongolia in 2004.Drinking water samples were collected to detect arsenic levels,and menstrual related situation was surveyed.The subjects were divided into four groups according to drinking water arsenic concentration:control(≤0.01 mg/L),low(＞ 0.01-0.10 mg/L),moderate(＞ 0.10-0.20 mg/L) and high(＞ 0.20mag/L).Results A total of 602 women were surveyed.There were 83 subjects exposed to arsenic before menarche and their menarche age was (14.37 ± 1.54) years old.There were 90 people exposed to arsenic before menopause and the menopause age was (48.13-0.41) years old.The age of menarche and menopause were positively related to the years of arsenic exposure,and correlation coefficients were 0.268 and 0.278 (all P ＜ 0.05).Compared to control group(14.0％,16/112),menstrual abnormality rate decreased in low(12.1％,21/173) and high dose groups(10.2％,19/186),while increased in the moderate dose group(18.2％,16/88),but the differences were not statistically significant(x2 =3.664,P ＞ 0.05).Conclusions Long-term arsenic exposure delays the menarche and menopause age,suggesting that arsenic has certain endocrine disruption or estrogen-like effects.
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Objective To observe the effects of chronic arsenic exposure on estrogen receptor-binding fragment-associated gene 9 (Ebag9) and estrogen-responsive finger protein (efp) mRNA expression in female rat' s myocardium.Methods Fifty female Wistar rats were randomly divided into five groups according to arsenic (As2O3) concentrations in drinking-water:0.00(control),0.05,0.10,0.20,0.40 mg/L groups and RT-PCR was used to detect Ebag9 and efp mRNA expression of myocardium at the 32 weeks of experiment.Results Ebag9 and efp mRNA expression levels in 0.00,0.05,0.10,0.20,0.40 mg/L groups were respectively as follows:0.54 ±0.14,0.52 ± 0.10,0.48 ± 0.24,0.58 ± 0.13,0.45 ± 0.19 and 0.85 ± 0.14,0.86 ± 0.12,0.87 ± 0.09,0.99 ±0.10,0.86 ± 0.19.Compared to the control group,Ebag9 mRNA level of the 0.20 mg/L group was increased,and decreased in other groups,but the difference between two groups was not significant(all P ＞ 0.05).Compared to control group,the efp mRNA level of 0.20 mg/L group increased significantly(P ＜ 0.05),and showed increased tendency in other arsenic groups,but the difference between two groups was not significant (all P ＞ 0.05).Conclusions Ebag9 and efp mRNA expression have changed in myocardium of rats exposed to chronic arsenic.Arsenic may has endocrine disruptor effect to female rat's myocardium.
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<p><b>OBJECTIVE</b>To understand the epidemiologic characteristics of dengue fever, imported from Myanmar to the border of Yunnan province, China. Viral molecular epidemiologic features were also studied.</p><p><b>METHODS</b>Questionnaires were used on each diagnosed, suspected dengue fever, case or unknown cases with fever when coming from Myanmar entering the port and hospitals in Ruili city of Yunnan province. Serum samples of these patients were collected to detect IgM antibody against dengue virus and RT-PCR assay. Homology and phylogenetic tree based on the whole nucleotide sequence of PrM-C and NS5 gene of dengue virus were further analyzed.</p><p><b>RESULTS</b>A total of 103 sera were collected from patients at acute stage in Ruili city in July to November 2008. Among them, 49 cases were confirmed for dengue fever according to IgM and nucleic acid testings. Except one, other 48 cases were all imported into Ruili, from Myanmar. Of those, 18 patients were residents from Mujie city of Myanmar and hospitalized in Ruili and the rest 30 patients were Chinese citizens who had finished business and returned from Myanmar. Two isolates of serum samples from the imported cases were identified and both homology and phylogenetic analysis were performed, using the nucleotide sequences of PrM and NS5 genes. They were divided into dengue type 1 (RLB61) and dengue type 3 (RLC31) and were closer to the dengue virus strains isolated from Southeast Asia countries.</p><p><b>CONCLUSION</b>It is confirmed that an epidemic of dengue fever which was imported from Myanmar to Ruili city of Yunnan province, China. Evidence also showed that both type I and III epidemic strains of dengue virus did exist in Mujie city of Myanmar in 2008.</p>
Subject(s)
Adolescent , Adult , Child , Child, Preschool , Female , Humans , Infant , Male , Middle Aged , China , Epidemiology , Dengue , Epidemiology , Dengue Virus , Genetics , Genotype , Molecular Epidemiology , Myanmar , Epidemiology , Phylogeny , RNA, Viral , GeneticsABSTRACT
Objective To determine the hosts of hantavirus (HV) and its molecular epidemiological characteristics, to provide evidence for prevention and control on hemorrhagic fever with renal syndrome (HFRS). Methods Rodents were captured by a special trap within the residential area. The antigens of HV in lung tissues were detected by direct immuno-fluorescence assay (DFA). Nucleotide sequences of HV were amplified by RT-PCR with HV genotype-specific primer. The amplified genes were then sequenced. Phylogenetic tree were built on nucleotide sequence with Clusta1X 1.83 software. Results 1421 rodents were captured and classified into 8 species of 4 Genera in the epidemic area within 10 counties of Chuxiong prefecture, Yunnan province, between 2005 and 2006. Out of the 1421 rodents, 1056 (74.31%) of them were Rattus norvegicas and 280 (19.70%) belonged to Rattus flavipectus. The antigens of HV were detected by DFA in lung tissues and the total positive rate of HV was 5.15% (53/ 1029). After applying the sequencing nucleotide method to the 53 positive specimens, data showed that 21 specimens were positive and all of them belonged to Seoul type ( 15 samples were from Rattus norvegicus, 4 samples Rattasflavipectas, 2 samples Rattus nitidas). The partial S segments from 12 specimens were sequenced which appeared homologic with R22, L99 and HLD65 from GenBank in relatively high level (87.1%-99.7%). When compared to 76-118 strain of Hantaan type, their homologic degree was only 64.4%-69.1%. Results from Phylogenetic analysis showed that 12 specimens belonged to Seoul type. As for their homology, they were significantly similar to Seoul type and could be tentatively divided into two subtypes S1 and S3. Conclusion It was confirmed that the Seoul type virus, as HFRS' s pathogenetic agent mainly carried by rats, prevailed widely in Chuxiong prefecture. Owing to the local ecological environment, we also noticed the characteristics of different HV subtypes among Seoul type.
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Objective To understand the epidemiological features of two rabies cases in Baoshan city year 2006 and 2007 and to analyze its source of infection.Methods Questionnaires were used to do the epidemiologieal survey on each of the rabies cases.Brain timue samples of rabies patients were collet to detect the rabies virus by direct immunofluoreseence assay(DFA)and RT-PCR assay.Homology and phylogenetic tree were analyzed.based on the whole nucleotide and deduced amino acid sequence of P,M and N gene of rabies virus followed by molecular epidemiological analysis.Results In July 2006,one human rabies case was identified in Longyang district,and another one in Tengchong county in Baoshan city in 2007.The degrees of exposure of these two patients was all at degreeⅢ.Two brain tissue samples among the dead patients(No.CYN0601H and CYN0701H)were confirmed positive by both DFA and RTPCR assay.The homology analysis of P,M and N gene sequences among CYN0601H,CYN0701H and other rabias strains isolated from other provinces and other counties.showed that the samples in Baoshan city shared the highest homology with the strains in Thailand.Phylogenetic analysis indicated that the two samples were very dose and all belonged to genetype 1 Lyssavirus,with the closest relationship between samples in Baoshan city and strains in Thailand.Conclusion It Was confirmed on the virus molecular level that the two patients in Baoshan city were both suffered from rabies.The prevalent strains in Baoshan city WaS probably imported from foreign country,suggesting that prevention and control measures on rabies virus in the boarder areas of Yunnan should be strengthened.
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<p><b>OBJECTIVE</b>To assess therapeutic effect of combined treatment of Chinese medicine and western medicine on optic atrophy complicated by cerebral palsy.</p><p><b>METHODS</b>One hundred and seventeen cases were divided into an observation group (n = 79) and a control group (n = 38). The control group were treated with routine western medicine treatment including neurotrophic drugs and high pressure oxygen, etc. and the observation group with acupuncture at Ganshu (BL 18), Pishu (BL 20), Chengqi (ST 1), etc. and injection of 0.2-0.3 mL Compound Danshen Injectio into Qiuhou (EX-HN 7), on the basis of the same treatment of western medicine as that in the control group. Fundus examination and the tracing body angle detection were conducted before and after treatment and the therapeutic effects were assessed in the two groups.</p><p><b>RESULTS</b>The total effective rate was 91.1% in the observation group and 60.5% in the control group with a significant difference between the two groups (P < 0.001); after treatment the angle of tracing body significantly increased in the two groups (P < 0.01) with the observation group better than the control group (P < 0.01).</p><p><b>CONCLUSION</b>The combined treatment of Chinese medicine and western medicine is an effective therapy for optic atrophy complicated by cerebral palsy.</p>
Subject(s)
Female , Humans , Infant , Male , Acupuncture Therapy , Cerebral Palsy , Combined Modality Therapy , Drug Therapy , Optic Atrophy , TherapeuticsABSTRACT
The similarities and differences between Chinese medicine (CM) education in China and Australia are considered in a detailed comparison of the five-year undergraduate programmes offered by the Beijing University of CM (BUCM), China and RMIT University (RMIT), Australia. BUCM is a specialist CM institution whereas RMIT is a technological university providing training in a wide range of professional areas. Both institutions are considered to be leading tertiary institutions within their respective countries. A brief account of the historical development of CM education in China and Australia is provided. We have compared the curricula and structure of the programmes and how they each address the development of essential graduate capabilities for competent and safe clinical CM practice. We have also considered the quality assurance processes and the requirements of external regulatory authorities. The curricula and educational objectives of the 2 programmes are broadly similar. Both institutions have established rigorous processes for managing teaching quality and ensuring appropriate graduates to promote evidence-based CM practice. However, there are differences relating to the healthcare systems of China and Australia and to the availability of teaching resources and clinical training facilities such as classical CM texts and CM hospitals. These differences present major challenges for the internationalisation of CM education. The findings of this study may facilitate the process of CM curriculum development in a global context.
Subject(s)
Humans , Australia , China , Education, Medical, Undergraduate , Reference Standards , Medicine, Chinese Traditional , Program EvaluationABSTRACT
<p><b>BACKGROUND</b>To survey arboviruses in Yunnan province.</p><p><b>METHODS</b>Mosquitoes were collected from Yunnan Province in 2002 and 2004. Virus strains were isolated by the inoculation of homogenates of the mosquitoes onto BHK cell line. The isolated strains and their molecular biological characteristics were identified by real-time PCR, reverse transcription-polymerase chain reaction (RT-PCR) and immunofluorescent antibody technique.</p><p><b>RESULTS</b>Twelve strains of viruses producing CPE in BHK cells were isolated from 4810 mosquitoes. All the 12 isolates were identified to be Japanese encephalitis viruses. Genotype analysis showed the new virus (DL-0437 strain) belonged to genotype III.</p><p><b>CONCLUSION</b>Twelve strains of Japanese encephalitis viruses were isolated from mosquito pools collected in Yunnan. It was the first isolation of genotype III Japanese encephalitis viruses in Yunnan Province in recent years.</p>
Subject(s)
Animals , Cricetinae , Animals, Newborn , Arboviruses , Classification , Genetics , Cell Line , China , Culicidae , Virology , Encephalitis Virus, Japanese , Classification , Genetics , Encephalitis, Japanese , Virology , Genotype , Microscopy, Fluorescence , Phylogeny , Reverse Transcriptase Polymerase Chain Reaction , Methods , Sequence Analysis, DNA , Viral Envelope Proteins , GeneticsABSTRACT
<p><b>BACKGROUND</b>To determine if the attenuated Japanese encephalitis (JE) virus SA14-14-2 vaccine strain interacts efficiently with Culex tritaeniorhynchus and Culex pipiens quinquefasciatus, and further to acquire a new knowledge of its characteristics and safety for human beings.</p><p><b>METHODS</b>Laboratory colonies of the two species of mosquitoes were set up and were inoculated intrathoracically with the attenuated vaccine virus and wild JE virus (Nak), both of which were used with different dilution from 10(-1) to 10(-9). Subsequently, the virus titers in the mosquitoes were detected by the plaque assay.</p><p><b>RESULTS</b>Inoculated with the vaccine strain, two species of mosquitoes were infected with the titers ranged from 10(0)-10(-3), and the maximum titers in Culex tritaeniorhynchus and Culex pipiens quinquefasciatus were 4.48 logPFU/ml and 5.63 logPFU/ml, respectively. Inoculated with wild JE virus, Culex pipiens quinquefasciatus was infected with titers ranged from 10(0)-10(-5), and the maximum titer in the mosquitoes was 6.59; Culex tritaeniorhynchus was infected with titers ranged from 10(0)-10(-4) and the maximum titer was 5.74 logPFU/ml.</p><p><b>CONCLUSION</b>By intrathoracic infection, the attenuated JE virus SA14-14-2 vaccine strain can replicate in both species of mosquitoes.</p>
Subject(s)
Animals , Humans , Culex , Classification , Virology , Encephalitis Virus, Japanese , Genetics , Allergy and Immunology , Encephalitis, Japanese , Virology , Insect Vectors , Virology , Japanese Encephalitis Vaccines , Allergy and Immunology , Species Specificity , Vaccines, Attenuated , Allergy and Immunology , Viral Plaque AssayABSTRACT
<p><b>OBJECTIVE</b>To investigate the epidemic state of arboviruses in the downstream area of Lancang river in Yunnan province.</p><p><b>METHODS</b>Mosquitoes were collected from Lancang river downstream area (including Lancang county and Simao city) during summer in 1998 and stored in liquid nitrogen after classification. The mosquito pools were homogenized and centrifuged, then the supernatant was inoculated into C6/36 cells for virus isolation. New isolates were identified by neutralization test(NT), ELISA, immunofluorescence assay(IFA) and polyacrylamid gel electrophoresis(PAGE).</p><p><b>RESULTS</b>Totally 22 isolates of arbovirus were obtained from 233 mosquito pools by inoculation of C6/36 cells and positive rate of the isolation was 9.4%. Ten strains were resistant to both ether and 5 prime-IDU. So they were non-enveloped double-stranded (ds) RNA virus. Twelve segmented RNAs were shown by PAGE and PAGE profiles from the ten strains were 6-6 with minor variation. The isolates can be neutralized by immunized mouse ascites fluid of BJ95-75 strains of coltivirus by NT, and reacted with monoclonal antibody against BJ95-75 by ELISA. These viruses were identified as coltivirus. Nine isolates were sensitive to ether and resistant to 5 prime-IDU. So they were non-enveloped RNA viruses. PAGE showed 10 segmented RNA, and they were identified to be orbiviruses. Three isolations were sensitive to ether. One of them can be neutralized with JEV A2 strain antibody by NT and was positive to the homologous antibody by IFA. It was identified being strain of JE virus. One strain(YN92-4) can be reacted with anti-bunyavirus group specific immune ascites fluid by both IFA and ElISA, but reacted neither with anti-alpha virus group, nor with anti-flavivirus group JE virus ascites fluid. The virions are spherical and about 87 nm in diameter with surface projections by negative staining. Conclusion Twenty-two isolates have been obtained from wild caught-mosquitoes of Lancang river down-stream area in Yunnan province. Among them ten, nine, one and one were identified as coltivirus, orbivirus, JE virus and bunyavirus, respectively. One is under identification. This is the first report on bunyavirus isolated from mosquitoes in China.</p>