28,735 results match your criteria Schistosomiasis

(Alb. & Schwein.) Kotl. & Pouz.: Natural Fungal Compounds and Synthetic Derivatives with In Vitro Anthelmintic Activities and Antiproliferative Effects against Two Human Cancer Cell Lines.

Molecules 2022 May 5;27(9). Epub 2022 May 5.

Department of Bioorganic Chemistry, Leibniz Institute of Plant Biochemistry, Weinberg 3, D-06120 Halle (Saale), Germany.

Neglected tropical diseases affect the world's poorest populations with soil-transmitted helminthiasis and schistosomiasis being among the most prevalent ones. Mass drug administration is currently the most important control measure, but the use of the few available drugs is giving rise to increased resistance of the parasites to the drugs. Different approaches are needed to come up with new therapeutic agents against these helminths. Read More

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Unbalanced relationships: insights into the interaction between gut microbiota, geohelminths, and schistosomiasis.

PeerJ 2022 5;10:e13401. Epub 2022 May 5.

Institute of Biomedical Sciences, Universidade Federal de Alfenas, Alfenas, Minas Gerais, Brazil.

Hosts and their microbiota and parasites have co-evolved in an adaptative relationship since ancient times. The interaction between parasites and intestinal bacteria in terms of the hosts' health is currently a subject of great research interest. Therapeutic interventions can include manipulations of the structure of the intestinal microbiota, which have immunological interactions important for modulating the host's immune system and for reducing inflammation. Read More

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[Whole transcriptome analysis and critical gene regulatory network analysis during infection and praziquantel treatment in mice].

Zhongguo Xue Xi Chong Bing Fang Zhi Za Zhi 2022 Apr;34(2):128-140

School of Basic Medical Sciences, Binzhou Medical University, Yantai, Shandong 264003, China.

Objective: To investigate long non-coding RNA (lncRNA)-microRNA (miRNA)-messenger RNA (mRNA) interactions and identify the critical gene regulatory network during infections and praziquantel treatment using whole transcriptome sequencing.

Methods: A total of 110 male C57BL/6 mice were randomly divided into the control group, the infection group and the treatment group. Mice in the infection treatment and the control group were infected with cercariae via the abdomen, and liver specimens were sampled from 10 mice 3, 6, 8 weeks post-infection. Read More

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[Epidemiological trends for human schistosomiasis prevalence in Hubei Province from 2004 to 2018 based on Joinpoint regression analysis].

Zhongguo Xue Xi Chong Bing Fang Zhi Za Zhi 2022 Apr;34(2):122-127

Hubei Center for Disease Control and Prevention, Wuhan, Hubei 430079, China.

Objective: To analyze the trends of human schistosomiasis prevalence in Hubei Province from 2004 to 2018, so as to provide the evidence for formulating the schistosomiasis elimination strategy in the province.

Methods: All data pertaining to human schistosomiasis prevalence in Hubei Province were collected from 2004 to 2018, and the trends for changes in seroprevalence, egg-positive rate and prevalence of human infection were analyzed using a Joinpoint regression model.

Results: Both of the numbers of residents seropositive and egg-positive for infections appeared a tendency towards a decline in Hubei Province from 2004 to 2018, and the prevalence of human infections reduced from 6. Read More

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Endemic Thoracic Infections in Sub-Saharan Africa.

Radiol Clin North Am 2022 May;60(3):461-479

Alliar Group, Rua Ernesto Nazaré, 389 - Alto de Pinheiros, São Paulo, São Paulo 05462-000, Brazil.

Although many of the thoracic infections endemic to Africa are also present around the world, this article focuses on entities that are emerging or disproportionately affect populations living in sub-Saharan Africa. Important emerging or reemerging viral and bacterial diseases that commonly affect the lung include dengue fever, plague, leptospirosis, and rickettsioses. Most parasitic infections endemic to Africa can also manifest within the thorax, including malaria, amebiasis, hydatid disease, schistosomiasis, paragonimiasis, ascariasis, strongyloidiasis and cysticercosis. Read More

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Endemic Thoracic Infections in Latin America and the Caribbean.

Radiol Clin North Am 2022 May;60(3):429-443

The University of Texas Health Science Center at San Antonio.

Infectious diseases, including parasitic diseases, which are commonly associated with poverty and poor sanitation, continue to cause significant morbidity, disability, and mortality in Latin America and the Caribbean region. This article reviews the epidemiology, pathophysiology, and cardiothoracic imaging manifestation of several communicable diseases endemic to this region. Read More

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Diagnosis of Schistosoma infection in non-human animal hosts: A systematic review and meta-analysis.

PLoS Negl Trop Dis 2022 May 6;16(5):e0010389. Epub 2022 May 6.

Department of Control of Neglected Tropical Diseases, World Health Organization, Geneva, Switzerland.

Background: Reliable and field-applicable diagnosis of schistosome infections in non-human animals is important for surveillance, control, and verification of interruption of human schistosomiasis transmission. This study aimed to summarize uses of available diagnostic techniques through a systematic review and meta-analysis.

Methodology And Principal Findings: We systematically searched the literature and reports comparing two or more diagnostic tests in non-human animals for schistosome infection. Read More

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Population genetic structure of Schistosoma haematobium and Schistosoma haematobium × Schistosoma bovis hybrids among school-aged children in Côte d'Ivoire.

Parasite 2022 3;29:23. Epub 2022 May 3.

IHPE, Univ. Montpellier, CNRS, Ifremer, Univ. Perpignan Via Domitia, 66860 Perpignan, France.

While population genetics of Schistosoma haematobium have been investigated in West Africa, only scant data are available from Côte d'Ivoire. The purpose of this study was to analyze both genetic variability and genetic structure among S. haematobium populations and to quantify the frequency of S. Read More

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Rationale and design of a screening study to detect schistosomiasis-associated pulmonary hypertension in Ethiopia and Zambia.

Pulm Circ 2022 Apr 22;12(2):e12072. Epub 2022 Apr 22.

Department of Epidemiology and Biostatistics University of California San Francisco San Francisco California USA.

Schistosomiasis is a major cause of pulmonary arterial hypertension (PAH) worldwide, but the prevalence and risk factors for schistosomiasis-associated PAH (SchPAH) development are not well understood. Schistosomiasis-associated hepatosplenic disease (SchHSD) is thought to be a major risk factor for PAH development. Herein, we describe our plans for prospectively screening SchHSD subjects for clinical evidence of PAH at two major academic medical centers and national referral hospitals in Addis Ababa, Ethiopia and Lusaka, Zambia. Read More

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[Travel vaccines: what is in the pipeline?]

Rev Med Suisse 2022 May;18(780):890-893

Policlinique de médecine tropicale, voyages et vaccinations, Centre de médecine générale et santé publique, Unisanté, 1011 Lausanne.

While no vaccine is on the horizon to prevent traveler's diarrhea, progress has been made in the field of malaria and dengue fever. In both cases, the objective is not primarily the prevention among travelers but rather the reduction of morbidity and mortality in populations living in endemic areas. The immune mechanisms protecting against parasitosis are not well understood, which further complicates vaccine development. Read More

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Deficiency of PKCλ/ι alleviates the liver pathologic impairment of Schistosoma japonicum infection by thwarting Th2 response.

Parasit Vectors 2022 May 3;15(1):154. Epub 2022 May 3.

National Health Commission Key Laboratory of Parasitic Disease Control and Prevention, Jiangsu Provincial Key Laboratory on Parasite and Vector Control Technology, Jiangsu Institute of Parasitic Diseases, 117 Meiyuan Yangxiang, Wuxi, 214064, Jiangsu, China.

Background: The activation of immune response driven by the eggs of Schistosoma japonicum and the subsequent secretions is the culprit behind granulomatous inflammation and liver fibrosis. Evidence suggests that PKCλ/ι participates in a variety of physiological and pathological processes, including the regulation of metabolism, growth, proliferation and differentiation of cells. However, the role of PKCλ/ι in liver disease caused by Schistosoma japonicum remains unclear. Read More

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Interventions for Neglected Tropical Diseases Among Children and Adolescents: A Meta-analysis.

Pediatrics 2022 May;149(Suppl 5)

Division of Women and Child Health, Aga Khan University Hospital, Karachi, Pakistan.

Background: Neglected tropical diseases (NTDs) are a group of communicable diseases affecting the poorest populations around the world.

Objective: To assess the effectiveness of interventions, including mass drug administration (MDA), water, sanitation, and hygiene (WASH), vector control, health education, and micronutrients supplementation, for NTDs among children and adolescents.

Methods: We conducted a literature search on the Cochrane Controlled Trials Register, Medline, and other databases until December 2020. Read More

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Schistosomiase urinaire chez un enfant provenant d’Afrique centrale.

CMAJ 2022 May;194(17):E632-E633

Division d'urologie, Service de chirurgie, Centre hospitalier universitaire de Sherbrooke, Sherbrooke, Qc.

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A low dose adenovirus vectored vaccine expressing Schistosoma mansoni Cathepsin B protects from intestinal schistosomiasis in mice.

EBioMedicine 2022 Apr 29;80:104036. Epub 2022 Apr 29.

Department of Medicine, Division of Experimental Medicine, McGill University, Montréal, Québec, Canada; Infectious Diseases and Immunity in Global Health Program, Research Institute of the McGill University Health Centre, Room: EM3.3244, 1001 Decarie Blvd, Montréal, Québec H4A 3J1, Canada; Department of Microbiology and Immunology, McGill University, Montréal, Québec, Canada; National Reference Centre for Parasitology, Research Institute of the McGill University Health Centre, Montréal, Québec, Canada. Electronic address:

Background: Schistosomiasis is an underestimated neglected tropical disease which affects over 236.6 million people worldwide. According to the CDC, the impact of this disease is second to only malaria as the most devastating parasitic infection. Read More

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The Potential Role of MicroRNA-124-3p in Growth, Development, and Reproduction of .

Front Cell Infect Microbiol 2022 13;12:862496. Epub 2022 Apr 13.

Guangdong Provincial Key Laboratory of Zoonosis Prevention and Control, College of Veterinary Medicine, South China Agricultural University, Guangzhou, China.

The microRNA-124-3p plays an important role in regulating development and neurogenesis. Previous microRNA sequencing analyses of revealed sja-miR-124-3p differential expression patterns in schistosomes from different hosts and at different developmental stages. This study explores the regulatory role of sja-miR-124-3p in development and reproduction. Read More

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Genome-Wide Association Study Identifies New Risk Loci for Progression of Schistosomiasis Among the Chinese Population.

Front Cell Infect Microbiol 2022 12;12:871545. Epub 2022 Apr 12.

Zhongshan School of Medicine, Sun Yat-Sen University, Guangzhou, China.

infections, which lead to local inflammatory responses to schistosome eggs trapped in host tissues, can result in long-term, severe complications. The development of schistosomiasis may result from a complex interaction between the pathogenic, environmental, and host genetic components. Notably, the genetic factors that influence the development of schistosomiasis complications are poorly understood. Read More

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Improving anthelmintic treatment for schistosomiasis and soil-transmitted helminthiases through sharing and reuse of individual participant data.

Wellcome Open Res 2022 5;7. Epub 2022 Jan 5.

Department of Infectious Disease Epidemiology, MRC Centre for Global Infectious Disease Analysis and London Centre for Neglected Tropical Disease Research, Imperial College London, London, UK.

The Infectious Diseases Data Observatory (IDDO, https://www.iddo.org) has launched a clinical data platform for the collation, curation, standardisation and reuse of individual participant data (IPD) on treatments for two of the most globally important neglected tropical diseases (NTDs), schistosomiasis (SCH) and soil-transmitted helminthiases (STHs). Read More

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January 2022

Morbidity indicators of urogenital schistosomosis and risk factors in school children in three Senatorial Districts of Cross River State, Nigeria.

Ann Parasitol 2022 ;68(1):61-70

Department of Medical Laboratory Science, Faculty of Allied Medical Sciences, University of Calabar, Calabar, Nigeria.

The morbidity indicators and risk factors of urinary schistosomosis in school-age children were ascertained in three Senatorial Districts of Cross River State (CRS). A cross-sectional study conducted between April 2015 and March 2016. Seven hundred and seventy-seven (777) urine samples were randomly collected from selected children and examined for ova of Schistosoma haematobium, using a modified filtration system. Read More

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Comparing the accuracy of two diagnostic methods for detection of light Schistosoma haematobium infection in an elimination setting in Wolaita Zone, South Western Ethiopia.

PLoS One 2022 29;17(4):e0267378. Epub 2022 Apr 29.

Bacterial, Parasitic and Zoonotic Diseases Research Directorate, Ethiopian Public Health Institute, Addis Ababa, Ethiopia.

Reagent urinalysis dipstick and filtration have been recommended diagnostic methods for the detection of urogenital schistosomiasis. However, the accurate diagnosis of light infections using these methods presents a major challenge. This study evaluates the diagnosis accuracy of light infection with Schistosoma haematobium in study participants living in Wolaita Zone, an area targeted for sustainable control of Schistosomiasis, and ultimately interrupt transmission. Read More

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The observed relationship between the degree of parasite aggregation and the prevalence of infection within human host populations for soil-transmitted helminth and schistosome infections.

Trans R Soc Trop Med Hyg 2022 Apr 26. Epub 2022 Apr 26.

London Centre for Neglected Tropical Disease Research, London W2 1PG, UK.

Background: Soil-transmitted helminths (STH) and schistosome parasites are highly aggregated within the human population. The probability distribution of worms per person is described well by the negative binomial probability distribution with aggregation parameter, k, which varies inversely with parasite clustering. The relationship between k and prevalence in defined populations subject to mass drug administration is not well understood. Read More

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Praziquantel-encapsulated niosomes against Schistosoma mansoni with reduced sensitivity to praziquantel.

Biomedica 2022 03 1;42(1):67-84. Epub 2022 Mar 1.

Medical Parasitology Department, Faculty of Medicine, Alexandria University, Alexandria, Egypt.

Introduction: Praziquantel (PZQ) is the only commercially available drug for schistosomiasis. The current shortage of alternative effective drugs and the lack of successful preventive measures enhance its value. The increase in the prevalence of PZQ resistance under sustained drug pressure is, therefore, an upcoming issue. Read More

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Single-nucleotide polymorphisms of artemisinin resistance-related pfubp1 and pfap2mu genes in imported Plasmodium falciparum to Wuhan, China.

Infect Genet Evol 2022 Apr 22;101:105286. Epub 2022 Apr 22.

School of Basic Medical Sciences, Hubei University of Medicine, Shiyan 442000, China; Department of Infectious Diseases, Renmin Hospital, Hubei University of Medicine, Shiyan 442000, China. Electronic address:

Background: Molecular markers for monitoring resistance could help improve malaria treatment policies. Delayed clearance of Plasmodium falciparum by artemisinin-based combination therapies (ACTs) has been reported in several countries. In addition to PfKelch13 (pfk13), new drug resistance genes, P. Read More

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Infection intensity-dependent accuracy of reagent strip for the diagnosis of Schistosoma haematobium and estimation of treatment prevalence thresholds.

PLoS Negl Trop Dis 2022 Apr 25;16(4):e0010332. Epub 2022 Apr 25.

Swiss Tropical and Public Health Institute, Allschwil, Switzerland.

Background: Reagent strip to detect microhematuria as a proxy for Schistosoma haematobium infections has been considered an alternative to urine filtration for individual diagnosis and community-based estimates of treatment needs for preventive chemotherapy. However, the diagnostic accuracy of reagent strip needs further investigation, particularly at low infection intensity levels.

Methods: We used existing data from a study conducted in Tanzania that employed urine filtration and reagent strip testing for S. Read More

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Inhibition of COX-2 ameliorates murine liver schistosomiasis japonica through splenic cellular immunoregulation.

Parasit Vectors 2022 Apr 23;15(1):144. Epub 2022 Apr 23.

Sino‑French Hoffmann Institute, School of Basic Medical Sciences, Guangzhou Medical University, Guangzhou, 511436, Guangdong Province, China.

Background: We have reported the positive association of the cyclooxygenase 2 (COX-2)/prostaglandin E2 (PGE2) axis with liver fibrosis induced by Schistosoma japonicum (Sj) infection, and TLR4 signaling controlled this axis. However, how COX-2 regulates immune response during Sj infection is still unclear.

Methods: Hematoxylin and eosin staining was used to evaluate the effect of the COX-2-specific inhibitor NS398 on liver granulomatous inflammation and fibrosis. Read More

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Gallbladder schistosomiasis displaying as gallbladder perforation: A case report.

Asian J Surg 2022 Apr 19. Epub 2022 Apr 19.

Wuxi School of Medicine, Jiangnan University, Wuxi, 214122, China; Department of Hepatobiliary Surgery, Affiliated Hospital of Jiangnan University, Wuxi, China.

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Population Genetic Structure and Hybridization of in Nigeria.

Pathogens 2022 Mar 31;11(4). Epub 2022 Mar 31.

IHPE, University Montpellier, CNRS, Ifremer, University Perpignan Via Domitia, F-66000 Perpignan, France.

Background: Schistosomiasis is a major poverty-related disease caused by dioecious parasitic flatworms of the genus with a health impact on both humans and animals. Hybrids of human urogenital schistosome and bovine intestinal schistosome have been reported in humans in several of Nigeria's neighboring West African countries. No empirical studies have been carried out on the genomic diversity of   in Nigeria. Read More

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Schistosomiasis at the Crossroad to Elimination: Review of Eclipsed Research with Emphasis on the Post-Transmission Agenda.

Trop Med Infect Dis 2022 Mar 31;7(4). Epub 2022 Mar 31.

Swiss Tropical and Public Health Institute, CH-4123 Allschwil, Switzerland.

While chronic schistosomiasis is pathologically well defined, the acute form of the disease is less well understood. It is generally agreed that early lesions, such as lung nodules and bladder polyps, are reversible, which impedes identification of the time elapsed since exposure. The intermediate stage between the acute and the chronic forms of schistosomiasis requires further investigation, as does the clinical stage due to lesions remaining after treatment. Read More

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Pathological and immunological evaluation of different regimens of praziquantel treatment in a mouse model of Schistosoma mansoni infection.

PLoS Negl Trop Dis 2022 Apr 21;16(4):e0010382. Epub 2022 Apr 21.

Laboratory of Parasitology and Ecology, Department of Animal Biology and Physiology, Faculty of Science, University of Yaoundé I, Yaoundé, Cameroon.

Background: One of the considerable challenges of schistosomiasis chemotherapy is the inefficacy of praziquantel (PZQ) at the initial phase of the infection. Immature schistosomes are not susceptible to PZQ at the curative dose. Here, we investigated the efficacy of different PZQ regimens administered during the initial stage of Schistosoma mansoni infection in mice. Read More

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Prevalence and risk factors of urogenital schistosomiasis among under-fives in Mtama District in the Lindi region of Tanzania.

PLoS Negl Trop Dis 2022 Apr 20;16(4):e0010381. Epub 2022 Apr 20.

Department of Parasitology and Medical Entomology, School of Public Health and Social Sciences, Muhimbili University of Health and Allied Sciences, Dar es Salaam, Tanzania.

Introduction: Despite the ongoing intervention for schistosomiasis control among school-age children in the Lindi region of Tanzania, urogenital schistosomiasis continues to be a public health problem, presumably because other at-risk populations are not covered in praziquantel deworming campaigns. Evidence shows that under-fives become infected in their early life hence the need to understand the disease profile and the risk factors for exposure to infection so as to plan effective control strategies in this group. This study examined the prevalence and risk factors of urogenital schistosomiasis among under-fives in the Mtama district, Lindi region of Tanzania. Read More

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Answer to April 2022 Photo Quiz.

J Clin Microbiol 2022 04 20;60(4):e0124721. Epub 2022 Apr 20.

Department of Pathology, Stanford University School of Medicinegrid.471392.a, Stanford, California, USA.

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