Differences in Rice stripe virus transmission abilities of Laodelphax striatellus (Homoptera: Delphacidae) from four geographical populations

Qing-Qing Gui,Xi-Min Shi,Fang Liu 한국응용곤충학회 2014 Journal of Asia-Pacific Entomology Vol.17 No.3

The small brown planthopper, Laodelphax striatellus (Fallén), can transfer Rice stripe virus (RSV) to host plants,which then develop rice stripe disease. Between vectors, there are two paths for RSV transmission. In currentstudy, we examined the horizontal, vertical and compound transmission rates (horizontal and vertical transmissionstogether) by L. striatellus from one non-epidemic area (Fuyang in Zhejiang province) and three epidemicareas (Yizheng and Peixian in Jiangsu province, and Donggang in Liaoning province). RSV acquisition rates fornaïve L. striatellus from the four populations were not significantly different. RSV transmission rate to healthyrice plants by viruliferous L. striatellus from Fuyang population was relatively lower than those of the otherthree populations. For example, RSV transmission rate in Fuyang population decreased by 1 fold compared tothat in Peixian population when the transmission times were 48 and 72 h. It indicated that horizontal transmissionability of Fuyang population was lower. Vertical transmission rate and the compound transmission abilitiesof infective L. striatellus in the first generation did not differ significantly among the four populations. However,the ratio of RSV-positive offspring of an infective mother in the fourth generation of Fuyang population (84.3 ±2.4%) was lowest, and decreased by 10% compared to that of Peixian population. It meant that compound transmissionability of Fuyang population was significantly lower than the other three populations. The reason for thedifference in transmission abilities of L. striatellus from different populations was discussed.

Scratching Stimuli of Mycelia Influence Fruiting Body Production and ROS-Scavenging Gene Expression of Cordyceps militaris

( Gui-qing Liu ),( Xue-hong Qiu ),( Li Cao ),( Ri-chou Han ) 한국균학회 2018 Mycobiology Vol.46 No.4

The entomopathogenic fungus Cordyceps militaris is a valuable medicinal ascomycete, which degenerates frequently during subsequent culture. To avoid economic losses during industrialized production, scratching stimuli of mycelia was introduced to improve the fruiting body production. The present results indicated that higher yields and biological efficiency were obtained from two degenerate strains (YN1-14 and YN2-7) but not from g38 (an insertional mutant in Rhf1 gene with higher yields and shorter growth periods). Furthermore, the growth periods of the fruiting bodies were at least 5 days earlier when the mycelia were scratched before stromata differentiation. Three ROS-scavenging genes including Cu/Zn superoxide dismutase (CmSod1), Glutathione peroxidase (CmGpx), and Catalase A (CmCat A) were isolated and their expression profiles against scratching were determined in degenerate strain YN1-14 and mutant strain g38. At day 5 after scratching, the expression level of CmGpx significantly decreased for strain g38, but that of CmSod1 significantly increased for YN1-14. These results indicated that scratching is an effective way to promote fruiting body production of degenerate strain, which may be related at least with Rhf1 and active oxygen scavenging genes.

Association of Risk of Gastric Cancer and Consumption of Tobacco, Alcohol and Tea in the Chinese Population

Tong, Gui-Xian,Liang, Han,Chai, Jing,Cheng, Jing,Feng, Rui,Chen, Peng-Lai,Geng, Qing-Qing,Shen, Xing-Rong,Wang, De-Bin Asian Pacific Journal of Cancer Prevention 2014 Asian Pacific journal of cancer prevention Vol.15 No.20

This study aimed at summarizing epidemiological research findings on associations between tobacco, alcohol and tea consumption and risk of gastric cancer (GC) in the Chinese population. The review searched PubMed, Embase, China National Knowledge Infrastructure (CNKI) and China Biology Medicine (CBM) databases and reference lists of review papers for all studies published in English or Chinese languages. Information extracted, via two independent researchers, from retrieved articles included first author, year of publication, study design, sample size, source of controls and adjusted odds ratio (OR) or relative risk (RR) with the corresponding 95% confidence intervals (CIs) for each category. Statistical analyses used software STATA version 12.0. The systematic search found 89 articles containing 25,821 GC cases and 135,298 non-cases. The overall random effects in terms of pooled OR and 95%CI for tobacco, alcohol and tea consumption were 1.62 (95%CI: 1.50-1.74), 1.57 (95%CI: 1.41-1.76) and 0.67 (95%CI: 0.59-0.76) respectively; while the heterogeneity among included studies ranged from 80.1% to 87.5%. The majority of subgroup analyses revealed consistent results with the overall analyses. All three behavioral factors showed statistically significant dose-dependent effects on GC (P<0.05). The study revealed that tobacco smoking and alcohol drinking were associated with over 1/2 added risk of GC, while tea drinking conferred about 1/3 lower risk of GC in the Chinese population. However, these results should be interpreted with caution given the fact that most of the included studies were based on a retrospective design and heterogeneity among studies was relatively high.

Association Between Pancreatitis and Subsequent Risk of Pancreatic Cancer: a Systematic Review of Epidemiological Studies

Tong, Gui-Xian,Geng, Qing-Qing,Chai, Jing,Cheng, Jing,Chen, Peng-Lai,Liang, Han,Shen, Xing-Rong,Wang, De-Bin Asian Pacific Journal of Cancer Prevention 2014 Asian Pacific journal of cancer prevention Vol.15 No.12

This study aimed to summarize published epidemiological evidence for the relationship between pancreatitis and subsequent risk of pancreatic cancer (PC). We searched Medline and Embase for epidemiological studies published by February $5^{th}$, 2014 examining the risk of PC in pancreatitis patients using highly inclusive algorithms. Information about first author, year of publication, country of study, recruitment period, type of pancreatitis, study design, sample size, source of controls and attained age of subjects were extracted by two researchers and Stata 11.0 was used to perform the statistical analyses and examine publication bias. Odds ratios (ORs) with 95% confidence intervals (CIs) were calculated with the random effects model. A total of 17 articles documenting 3 cohort and 14 case-control studies containing 14,667 PC cases and 17,587 pancreatitis cases were included in this study. The pooled OR between pancreatitis and PC risk was 7.05 (95%CI: 6.42-7.75). Howeever, the pooled ORs of case-control and cohort studies were 4.62 (95%CI: 4.08-5.22) and 16.3 (95%CI: 14.3-18.6) respectively. The risk of PC was the highest in patients with chronic pancreatitis (pooled OR=10.35; 95%CI: 9.13-11.75), followed by unspecified type of pancreatitis (pooled OR=6.41; 95%CI: 4.93-8.34), both acute and chronic pancreatitis (pooled OR=6.13; 95%CI: 5.00-7.52), and acute pancreatitis (pooled OR=2.12; 95%CI: 1.59-2.83). The pooled OR of PC in pancreatitis cases diagnosed within 1 year was the highest (pooled OR=23.3; 95%CI: 14.0-38.9); and the risk in subjects diagnosed with pancreatitis for no less than 2, 5 and 10 years were 3.03 (95%CI: 2.41-3.81), 2.82 (95%CI: 2.12-3.76) and 2.25 (95%CI: 1.59-3.19) respectively. Pancreatitis, especially chronic pancreatitis, was associated with a significantly increased risk of PC; and the risk decreased with increasing duration since diagnosis of pancreatitis.

《文心雕龍》 诗學体系论

歸靑(Gui qing) 중국문화연구학회 2005 중국문화연구 Vol.0 No.6

Association Between Gestational Diabetes Mellitus and Subsequent Risk of Cancer: a Systematic Review of Epidemiological Studies

Tong, Gui-Xian,Cheng, Jing,Chai, Jing,Geng, Qing-Qing,Chen, Peng-Lai,Shen, Xin-Rong,Liang, Han,Wang, De-Bin Asian Pacific Journal of Cancer Prevention 2014 Asian Pacific journal of cancer prevention Vol.15 No.10

Purpose: This study aimed at summarizing epidemiological evidence of the association between gestational diabetes mellitus (GDM) and subsequent risk of cancer. Materials and Methods: We searched Medline, Embase, Cancer Lit and CINAHL for epidemiological studies published by February 1, 2014 examining the risk of cancer in patients with history of GDM using highly inclusive algorithms. Information about first author, year of publication, country of study, study design, cancer sites, sample sizes, attained age of subjects and methods used for determining GDM status were extracted by two researchers and Stata version 11.0 was used to perform the meta-analysis and estimate the pooled effects. Results: A total of 9 articles documented 5 cohort and 4 case-control studies containing 10,630 cancer cases and 14,608 women with a history of GDM were included in this review. Taken together, the pooled odds ratio (OR) between GDM and breast cancer risk was 1.01 (0.87-1.17); yet the same pooled ORs of case-control and cohort studies were 0.87 (0.71-1.06) and 1.25 (1.00-1.56) respectively. There are indications that GDM is strongly associated with higher risk of pancreatic cancer (HR=8.68) and hematologic malignancies (HR=4.53), but no relationships were detected between GDM and other types of cancer. Conclusions: Although GDM increases the risk of certain types of cancer, these results should be interpreted with caution becuase of some methodological flaws. The issue merits added investigation and coordinated efforts between researchers, antenatal clinics and cancer treatment and registration agencies to help attain better understanding.

Epidemiological Investigation of Asymptomatic Dogs with Leishmania Infection in Southwestern China Where Visceral Leishmaniasis is Intractable

Gui-Hua Zhao,Kun Yin,Wei-Xia Zhong,Ting Xiao,Qing-Kuan Wei,Yong Cui,Gong-Zhen Liu,Chao Xu,Hong-Fa Wang 대한기생충학열대의학회 2016 The Korean Journal of Parasitology Vol.54 No.6

Heishui county, located in northwest Sichuan province, southwestern China, is an endemic area of zoonotic visceral leishmaniasis (VL) and is the most intractable area. VL is never destroyed in it. Asymptomatic dogs (Leishmania parasites have been diagnosed but clinically healthy) are considered to be a potential reservoir host in zoonotic VL area, and most can lead to infection of individuals, that is a new challenge for controlling VL in humans. The present study aimed to assess the Leishmania infection rate of asymptomatic dogs in Heishui county. Total 105 asymptomatic domestic dogs were gathered from 4 districts in Heishui county to investigate the infection rate with serological and molecular methods based on ELISA and kinetoplast minicircle DNA(kDNA) PCR, respectively. Out of 105 dogs, 44 (41.9%) were positive by more than 1 method; 21 (20.0%) were positive by ELISA, and 30 (28.6%) were positive by kDNA-PCR. Our study showed that Leishmania infection of domestic dogs which is clinically healthy is prevalent in the studied district, and the asymptomatic dogs infected by Leishmania may be the primary reason for the prevalence of visceral leishmaniasis in the area.

Seroprevalence of Encephalitozoon cuniculi and Toxoplasma gondii in domestic rabbits (Oryctolagus cuniculus) in China

Qing-Feng Meng,Wei-Lin Wang,Xiao-Ting Ni,Hai-Bin Li,Gui-Zhe Yao,Xiao-Lin Sun,Wei-Li Wang,Wei Cong 대한기생충학열대의학회 2015 The Korean Journal of Parasitology Vol.53 No.6

The breeding of domestic rabbits (Oryctolagus cuniculus) for human consumption has a long tradition in China. Infections that can affect the production of meat or even be transmitted from animals to humans are important to monitor, especially for public health reasons as well as for their impact on animal health. Thus, a total of 1,132 domestic rabbit sera from 4 regions in China were collected for serological screening for Encephalitozoon cuniculi and for Toxoplasma gondii by ELISA and modified agglutination test (MAT), respectively. Antibodies to E. cuniculi were detected in 248/1,132 (21.9%) sera tested while antibodies against T. gondii revealed a seroprevalence of 51/1,132 (4.5%). We believe that the present results are of epidemiological implications and public health importance due to the acknowledged susceptibility of humans to E. cuniculi and T. gondii infections. Therefore, routine screening tests of domestic rabbits are proposed considering the zoonotic potential of these parasites.

Plenary Session : Small Cell Carcinoma of The Esophagus: Analysis of 126 Cases

( Gui Qi Wang ),( Zhao Hui Xiong ),( Bao Qing Li ) 대한소화기학회 2007 SIDDS Vol.9 No.-

Background/Aims: Small cell carcinoma of the esophagus (ESCC) is a rare and aggressive tumor with early wide-spread dissemination. Although the rarity of this tumor has impeded statistical evaluation. We reviewed records of 5.164 esophageal cancer patients treated in Shijiazhuang Municipal No.1 Hospital and Hebei tumor hospital from May, 1996 to Dec. 2006. Of 5.164 cases, 126 patients were diagnosed ESOC, with a relative frequency of 2.44%. This is one of the largest single institution series in the world literature. The purpose of this study was to analyze the clinical manifestations, pathological features and treatment of primary small cell carcinoma of the esophagus. Methods: The records of 126 patients with primary esophageal small cell carcinoma were reviewed to summarize the clinical characteristics and impact of therapy modality on the survival. Results: The median survival time of the 102 patients was 16.2 months; the 1-, 2-, and 3-year survival rates were 64.7%, 32.4%, and 9.8% respectively, 59 of the cases were followed up to exceed 5 years. Of the 59 cases, only 3 survival time were exceeded 5 years. Clinical stage was the most important prognostic factor. The median survival time of the patients received local treatment (surgical operation or radiotherapy) was 14.5 months and 9.1 mouths respectively, the 1-, 2-, 3-year survival rates were 45.8%, 27.3%, and 6.3% in local treatment cases respectively. The median survival time of the patients received local treatment plus chemotherapy were 18.0 months; the 1-, 2-, 3-year survival rates were 69.0%, 36.2%, and 10.3%, respectively. Conclusions: Small cell carcinoma of the esophagus should be regarded as a systemic disease, and multimodality treatment, including chemotherapy, should be used. Surgery may be offered in selected patients to manage local disease as part a chemotherapy-based treatment program. ESCC is a very aggressive tumor with poor prognosis.

Cloning, Characterization and Expression Analysis ofInterleukin-10 from the Zebrafish (Danio rerion)

Yan-Qing Shao,Shi-Gui Jiang,Yan-Qin Huang,Dian-Chang Zhang 한국생화학분자생물학회 2005 BMB Reports Vol.38 No.5