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https://www.readbyqxmd.com/read/29782530/histone-methylation-changes-are-required-for-life-cycle-progression-in-the-human-parasite-schistosoma-mansoni
#1
David Roquis, Aaron Taudt, Kathrin K Geyer, Gilda Padalino, Karl F Hoffmann, Nancy Holroyd, Matt Berriman, Benoît Aliaga, Cristian Chaparro, Christoph Grunau, Ronaldo de Carvalho Augusto
Epigenetic mechanisms and chromatin structure play an important role in development. Their impact is therefore expected to be strong in parasites with complex life cycles and multiple, strikingly different, developmental stages, i.e. developmental plasticity. Some studies have already described how the chromatin structure, through histone modifications, varies from a developmental stage to another in a few unicellular parasites. However, this, to our knowledge, has never been done before in multicellular metazoan parasites...
May 21, 2018: PLoS Pathogens
https://www.readbyqxmd.com/read/29782500/the-human-snail-transmission-environment-shapes-long-term-schistosomiasis-control-outcomes-implications-for-improving-the-accuracy-of-predictive-modeling
#2
David Gurarie, Nathan C Lo, Martial L Ndeffo-Mbah, David P Durham, Charles H King
INTRODUCTION: Schistosomiasis is a chronic parasitic trematode disease that affects over 240 million people worldwide. The Schistosoma lifecycle is complex, involving transmission via specific intermediate-host freshwater snails. Predictive mathematical models of Schistosoma transmission have often chosen to simplify or ignore the details of environmental human-snail interaction in their analyses. Schistosome transmission models now aim to provide better precision for policy planning of elimination of transmission...
May 21, 2018: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/29780019/parasitic-infections-in-individuals-travelling-to-america-and-precautionary-measures
#3
Mehmet Aykur, Muhammet Karakavuk, Ayşegül Ünver, Hande Dağcı
Over the past decade, the number of international travels has increased. Hence, the risk of transmission of parasitic diseases has also increased. One of the risk infections is malaria; Plasmodium vivax and P. falciparum species can be transmitted. The distribution of leishmaniasis cases has been reported from the south of USA to the north of Argentina. Approximately 57,000 cases of cutaneous and mucocutaneous leishmaniasis occur annually, and approximately 4000 visceral leishmaniasis cases are observed. It is reported that Chagas disease is endemic in 21 countries, and approximately 6 million people are affected every year...
March 2018: Türkiye Parazitolojii Dergisi
https://www.readbyqxmd.com/read/29780009/parasitic-diseases-that-can-infect-travelers-to-africa
#4
Muhammet Karakavuk, Mehmet Aykur, Ayşegül Ünver, Mert Döşkaya
Travel is important in the spread of diseases, and the number of travelers is increasing daily. Therefore, the importance of the diseases that occur during or after travel is increasing. In underdeveloped countries in particular, parasitic diseases are epidemic or endemic, and these diseases lead to high numbers of deaths. People traveling from developed to underdeveloped countries have a higher risk of transmission of parasitic diseases during travel. Fifteen percent of the world's population lives in Africa...
May 21, 2018: Türkiye Parazitolojii Dergisi
https://www.readbyqxmd.com/read/29779499/efficacy-of-artemisinin-naphthoquine-phosphate-against-schistosoma-haematobium-adult-flukes-dose-effect-relationship-and-tegumental-alterations
#5
S N El-Beshbishi, S El Bardicy, M Tadros, M Ayoub, A Taman
Schistosoma haematobium and Schistosoma mansoni infections have broadly overlapping geographical distributions. Praziquantel is the only treatment for human schistosomiasis, so drug tolerance and/or resistance are major concerns. Artemisinin-naphthoquine phosphate (CO-ArNp), an artemisinin-based combination therapy endorsed by the World Health Organization as a gold standard therapy for malaria, has also been identified as a promising treatment for S. mansoni. In this in vitro study, we tested the effect of 1-40 μg/ml CO-ArNp on S...
May 21, 2018: Journal of Helminthology
https://www.readbyqxmd.com/read/29779299/health-issues-of-refugees-attending-an-infectious-disease-refugee-health-clinic-in-a-regional-australian-hospital
#6
Peta J Masters, Penelope J Lanfranco, Emmy Sneath, Amanda J Wade, Sarah Huffam, James Pollard, James Standish, Kate McCloskey, Eugene Athan, Daniel P O'Brien, N Deborah Friedman
BACKGROUND AND OBJECTIVES: Refugees in Australia present with conditions different to those of the general population. The aim of this study was to review the reasons for referral, prevalence of conditions and treatment outcomes for refugee patients attending a specialist referral clinic in regional Victoria. METHOD: A retrospective review was undertaken of patients attending the refugee health clinic at University Hospital Geelong from January 2007 to December 2012...
May 2018: Australian journal of general practice
https://www.readbyqxmd.com/read/29773076/risk-factors-for-schistosomiasis-in-an-urban-area-in-northern-c%C3%A3-te-d-ivoire
#7
Richard K M'Bra, Brama Kone, Yapi G Yapi, Kigbafori D Silué, Ibrahima Sy, Danielle Vienneau, Nagnin Soro, Guéladio Cissé, Jürg Utzinger
BACKGROUND: Schistosomiasis is a water-based disease transmitted by trematodes belonging to the genus Schistosoma. The aim of this study was to assess the relationship between the prevalence of schistosomiasis and access to water, sanitation and hygiene (WASH) and environmental and socioeconomic factors in the city of Korhogo, northern Côte d'Ivoire. METHODS: A cross-sectional study including 728 randomly selected households was conducted in Korhogo in March 2015...
May 18, 2018: Infectious Diseases of Poverty
https://www.readbyqxmd.com/read/29772240/identification-and-characterization-of-the-zinc-finger-protein-sjzf-in-schistosoma-japonicum
#8
Ruixiang Zhang, Jian Li, Manyu Xiang, Qinghua Hong, Bin Xu, Wei Hu
Schistosomiasis represents one of the most prevalent parasitic infections affecting over 249 million people worldwide. The pathological damage is mainly caused by the eggs laid by female schistosomes. Zinc finger proteins (ZFPs) usually play critical roles in many biological functions. In this study, we cloned, identified and characterized the zinc finger protein SjZF of Schistosoma japonicum. SjZF ortholog proteins were also identified in S. mansoni, S. haematobium, Opisthorchis viverrini and O. sinensis. Fluorescence localization showed that SjZF was particularly expressed in the worm gut of both genders and the vitelline glands of females...
May 14, 2018: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/29770673/-global-burden-and-challenges-of-parasitic-diseases-in-africa
#9
Li Yi-Ting, Ren Guang-Hui, Liang You-Sheng, Yang Kun, Sun Le-Ping, Li Shi-Zhu, Lü Shan, Jia Tie-Wu
Parasitic diseases are common infectious diseases closely related to poverty, which are mainly endemic in the tropical and subtropical regions. Africa is the major epidemic area of parasitic diseases, and the global burden of malaria and schistosomiasis is over 85% in Africa. This paper reviews the disease burden, regional distribution and control strategies of the main parasitic diseases in Africa, in order to promote the prevention and control of parasitic diseases in this area.
April 17, 2018: Zhongguo Xue Xi Chong Bing Fang Zhi za Zhi, Chinese Journal of Schistosomiasis Control
https://www.readbyqxmd.com/read/29770672/-effect-of-cementing-ditch-based-project-on-schistosomiasis-control-in-dingshen-river-basin-in-shitai-county
#10
Tao Wei, Chen Xue-Feng, Wu Ming-Yao, Wang Cheng, Du Yi-Fang
OBJECTIVE: To evaluate the effect of cementing ditch-based project on schistosomiasis control in the irrigation area of Dingshen River basin in Shitai County, Anhui Province. METHODS: The data of Oncomelania hupensis snail surveys from 2009 to 2015 and the data of schistosome infections in humans and livestock from 2009 to 2015 were collected, and the changes of the epidemic situation were analyzed and compared before and after the project. RESULTS: In the cementing ditches, the occurrence rate of living snails decreased by 68...
March 1, 2018: Zhongguo Xue Xi Chong Bing Fang Zhi za Zhi, Chinese Journal of Schistosomiasis Control
https://www.readbyqxmd.com/read/29770667/-clinical-characteristics-of-16-newly-discovered-advanced-schistosomiasis-patients-in-dongpo-district-meishan-city-sichuan-province
#11
Zhou Zhi, Xu Jia, Zhang Yi
OBJECTIVE: To understand the clinical characteristics of newly discovered advanced schistosomiasis patients in Dongpo District, Meishan City, Sichuan Province, so as to provide the reference for enhancing the clinicians' awareness for diagnosis and treatment of this disease and improving the therapeutic effect. METHODS: The data of medical records and schedule of case survey of 16 newly discovered advanced schistosomiasis patients in Dongpo District, Meishan City, Sichuan Province were collected and analyzed...
April 17, 2018: Zhongguo Xue Xi Chong Bing Fang Zhi za Zhi, Chinese Journal of Schistosomiasis Control
https://www.readbyqxmd.com/read/29770654/-preparation-of-freeze-drying-control-materials-of-igg-antibody-against-schistosoma-japonicum-for-immunodetection-kits
#12
Huang Jin, Tang Chun-Lian, Tu Zu-Wu, Tang Li, Zhang Ke-Hui, Li Qian, Ye Jun
OBJECTIVE: To prepare freeze-drying control materials of IgG antibody against Schistosoma japonicum for detection kits. METHODS: The serum samples of schistosomiasis patients from endemic areas and normal people without history of schistosome infection or contact with infested water in Hubei Province were collected. All the sera were detected by the method approved by China Food and Drug Administration and selected for preparation of quality control samples. RESULTS: Totally twelve positive quality control materials, ten negative quality control materials, and one sensitive and one precision quality control materials were screened...
April 18, 2018: Zhongguo Xue Xi Chong Bing Fang Zhi za Zhi, Chinese Journal of Schistosomiasis Control
https://www.readbyqxmd.com/read/29770651/-analysis-on-the-situation-of-schistosome-infections-in-floating-population-in-national-schistosomiasis-surveillance-sites-of-china
#13
Guan Zhou, Lü Shan, Li Shi-Zhu, Dang Hui, Zhang Li-Juan, Xu Jing
OBJECTIVE: To understand the situation of Schistosoma japonicum infections in foating population and its epidemiological characteristics in China, so as to provide insights into the development of the surveillance strategy and interventions for schistosomiasis. METHODS: According to the protocol of national surveillance project, indirect hemagglutination test (IHA) was employed for serological screening of S. japonicum infections among the floating population in the national schistosomiasis surveillance sites of China from 2005 to 2014, and the sero-positives were subjected to parasitological examinations...
April 20, 2018: Zhongguo Xue Xi Chong Bing Fang Zhi za Zhi, Chinese Journal of Schistosomiasis Control
https://www.readbyqxmd.com/read/29770650/-thinking-on-oncomelania-hupensis-snail-control-by-comprehensive-control-measures-combined-with-a-total-of-five-water-treatment
#14
Gao Lu-Lu
Oncomelania hupensis is the only intermediate host of Schistosoma japonicum , and it has a significant influence on the transmission, control and elimination of schistosomiasis. In 2016, Zhejiang Province passed the national united assessment of "maintaining the schistosomiasis elimination status"; however, there are still O. hupensis snails remained in the very complicated environments. The breeding and spread of O. hupensis snails can be controlled for a long time with the environmental modification by adapting to local circumstance and scientific development, which can reduce the potential risk of schistosomiasis transmission and promote the development of local economy and society...
March 13, 2018: Zhongguo Xue Xi Chong Bing Fang Zhi za Zhi, Chinese Journal of Schistosomiasis Control
https://www.readbyqxmd.com/read/29770649/-challenges-and-strategies-of-health-education-and-health-promotion-in-stage-of-schistosomiasis-elimination
#15
Hu Guang-Han, Xu Jing, Cao Chun-Li, Jin Jia-Ning, Lü Shan, Li Shi-Zhu, Zhou Xiao-Nong
Health education and health promotion are important measures for comprehensive control of schistosomiasis in China, which can improve the compliance rate of residents involved in schistosomiasis control activities, reduce the water contact behavior of the target population, thus avoiding or decreasing the infection of schistosome in endemic areas. In recent years, the comprehensive control of schistosomiasis in China has achieved remarkable results. China has reached the goal of transmission control and is moving toward the transmission interruption or even elimination of schistosomiasis...
April 17, 2018: Zhongguo Xue Xi Chong Bing Fang Zhi za Zhi, Chinese Journal of Schistosomiasis Control
https://www.readbyqxmd.com/read/29770648/-challenge-and-strategy-of-prevention-and-control-of-important-parasitic-diseases-under-the-belt-and-road-initiative
#16
Cao Chun-Li, Guo Jia-Gang
China was once a country with the heaviest burden of parasitic diseases. Under the leadership of the Communist Party and national authority, after more than 60 years' efforts of prevention and control, the remarkable results have been achieved in China. However, affected by the social and economic development and environmental changes, the prevention and control of parasitic diseases, especially imported parasitic diseases, are facing new challenges, and the parasitic diseases, such as malaria, schistosomiasis, leishmaniasis, filariasis and trypanosomiasis, appear increasingly...
April 17, 2018: Zhongguo Xue Xi Chong Bing Fang Zhi za Zhi, Chinese Journal of Schistosomiasis Control
https://www.readbyqxmd.com/read/29764454/screening-a-repurposing-library-the-medicines-for-malaria-venture-stasis-box-against-schistosoma-mansoni
#17
Valérian Pasche, Benoît Laleu, Jennifer Keiser
BACKGROUND: The development of new treatments against schistosomiasis is imperative but lacks commercial interest. Drug repurposing represents a suitable strategy to identify potential treatments, which have already unblocked several essential steps along the drug development path, hence reducing costs and timelines. Promoting this approach, the Medicines for Malaria Venture (MMV) recently distributed a drug repurposing library of 400 advanced lead candidates (Stasis Box). METHODS: All 400 compounds were initially tested in vitro against the larval stage of Schistosoma mansoni at 10 μM...
May 15, 2018: Parasites & Vectors
https://www.readbyqxmd.com/read/29761225/pathological-characteristics-and-prognostic-indicators-of-different-histopathological-types-of-urinary-bladder-cancer-following-radical-cystectomy-in-a-large-single-center-egyptian-cohort
#18
Jeremy W Martin, Simone L Vernez, Yair Lotan, Ahmed Abdelhalim, Rahul Dutta, Ahmed Shokeir, Hassan Abol-Enein, Ahmed Mosbah, Mohamed Ghoneim, Ramy F Youssef
OBJECTIVE: To evaluate differences in pathological features and prognostics across four bladder cancer histopathological types: urothelial carcinoma (UC), urothelial carcinoma with variant histology (UCV), squamous cell carcinoma (SCC) and adenocarcinoma (ADC), utilizing a large cohort of radical cystectomy (RC) patients. METHODS: A retrospective analysis of patients who underwent RC at a single institution in Egypt between 1997 and 2004 was performed. Kaplan-Meier and multivariable analyses were performed to evaluate the prognostic significance of pathological features including tumor stage, grade, lymphovascular invasion (LVI), and lymph node (LN) involvement in the different subtypes on disease-free survival (DFS)...
May 14, 2018: World Journal of Urology
https://www.readbyqxmd.com/read/29760143/developmental-sensitivity-in-schistosoma-mansoni-to-puromycin-to-establish-drug-selection-of-transgenic-schistosomes
#19
Hong-Bin Yan, Michael J Smout, Chuan Ju, Anne E Folley, Danielle E Skinner, Victoria H Mann, Alex Loukas, Wei Hu, Paul J Brindley, Gabriel Rinaldi
Schistosomiasis is considered the most important disease caused by helminth parasites, in terms of morbidity and mortality. Tools to facilitate gain- and loss- of-function approaches can be expected to precipitate the discovery of novel interventions, and drug selection of transgenic schistosomes would facilitate the establishment of stable lines of engineered parasites. Sensitivity of developmental stages of schistosomes to the aminonucleoside antibiotic puromycin was investigated. For the schistosomulum and sporocyst stages, viability was quantified by fluorescence microscopy following dual staining with fluorescein diacetate and propidium iodine...
May 14, 2018: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/29758050/an-assessment-of-false-positive-rates-for-malaria-rapid-diagnostic-tests-caused-by-non-plasmodium-infectious-agents-and-immunological-factors
#20
Michelle L Gatton, Sadmir Ciketic, John W Barnwell, Qin Cheng, Peter L Chiodini, Sandra Incardona, David Bell, Jane Cunningham, Iveth J González
BACKGROUND: Malaria rapid diagnostic tests (RDTs) can produce false positive (FP) results in patients with human African trypanosomiasis and rheumatoid factor (RF), but specificity against other infectious agents and immunological factors is largely unknown. Low diagnostic specificity caused by cross-reactivity may lead to over-estimates of the number of malaria cases and over-use of antimalarial drugs, at the cost of not diagnosing and treating the true underlying condition. METHODS: Data from the WHO Malaria RDT Product Testing Programme was analysed to assess FP rates of 221 RDTs against four infectious agents (Chagas, dengue, Leishmaniasis and Schistosomiasis) and four immunological factors (anti-nuclear antibody, human anti-mouse antibody (HAMA), RF and rapid plasma regain)...
2018: PloS One
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