109 results match your criteria: "Tropical Disease Research Centre[Affiliation]"

A Multiplex PCR Assay for Simultaneous Detection of , , spp. and in Goats.

Vet Sci

September 2024

National Institute of Parasitic Diseases, Chinese Center for Diseases Control and Prevention (Chinese Center for Tropical Diseases Research), Key Laboratory of Parasite and Vector Biology, National Health Commission of the People's Republic of China (NHC) (Institute of Parasitic Disease Prevention and Control, Chinese Centre for Disease Control and Prevention, China), Shanghai 200025, China.

Article Synopsis
  • - A multiplex PCR assay was developed to detect four zoonotic parasites in goat stool samples, demonstrating its efficiency with specific gene amplifications for each parasite.
  • - The assay showed high sensitivity (≥10 copies) and specificity, accurately identifying infection rates: 23.08% for , 24.62% for , 41.54% for spp., and 12.31% for .
  • - This method offers a rapid, sensitive, and cost-effective tool for epidemiological studies on these parasitic infections, enhancing detection capabilities in veterinary settings.
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Objective: To identify the most effective dose of filarial rALT-2 and rGST alone or in combination against infection and .

Methods: ( = 5-7/group) received intramuscular (i.m.

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Identification and functional analysis of mitogenic miRNA of the carcinogenic liver fluke Opisthorchis viverrini.

Acta Trop

August 2024

Tropical Medicine Graduate Program (International Program), Department of Tropical Medicine, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand; WHO Collaborating Centre for Research and Control of Opisthorchiasis (Southeast Asian Liver Fluke Disease), Tropical Disease Research Centre, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand.

Opisthorchis viverrini is a pathogenic liver fluke that is known to cause cholangiocarcinoma in chronic infections. The underlying mechanism for this carcinogenesis is believed to be multifactorial, with parasite-derived excretory-secretory (ES) products potentially playing major roles. A recent study on these ES products has identified microRNAs (miRNA) that originate from O.

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Introduction: Epidemiological data indicate that neurodegenerative diseases show a high prevalence with a progressive increasing trend, especially in aging populations, as is the case in rural areas. The objective of this study was to assess the quantitative impact of neurodegenerative diseases in rural areas of the Spanish-Portuguese border region and to describe the epidemiological profile of the most prevalent disorders in one of the most depopulated and aged regions of Europe.

Methods: A cross-sectional descriptive study was designed to estimate the prevalence of subjects diagnosed with the most common neurodegenerative disorders: dementia (Alzheimer's disease and other dementias), Parkinson's disease and Parkinsonism, and multiple sclerosis in the Spanish-Portuguese cross-border border region in 2020.

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Reproductive Health Practices in Spanish Women Who Underwent Voluntary Termination of Pregnancy.

Diseases

February 2023

Department of Obstetrics and Gynecology, Hospital Universitario de Salamanca, University of Salamanca, Institute for Biomedical Research of Salamanca (IBSAL), 37007 Salamanca, Spain.

The incidence of Voluntary Termination of Pregnancy (VTP) is an important indicator of unplanned pregnancies and the differences in the functioning of contraceptive services and the effectiveness of their use. Its analysis is essential for monitoring the well-being of women and their partners. Our aim was to analyse the socio-demographic profile of women who request voluntary termination of pregnancy in the province of Salamanca, as well as their satisfaction with the intervention and its influence on their contraceptive methods.

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Background: Malaria causes anemia by destruction of red blood cells and inhibition of erythropoiesis.

Objective: We assessed whether the magnitude of the malaria-specific effect on anemia differs by age, during low and high malaria seasons.

Method: In rural Zambian children participating in a pro-vitamin A efficacy trial, we estimated differences in the prevalence of anemia (defined as hemoglobin < 110 g/L for children < 60 months.

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Background: Pressure Injuries (PIs) are major worldwide public health threats within the different health-care settings.

Objective: To describe and compare epidemiological and clinical features of PIs in COVID-19 patients and patients admitted for other causes in Internal Medicine Units during the first wave of COVID-19 pandemic.

Design: A descriptive longitudinal retrospective study.

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Helicobacter pylori GroEL Seropositivity Is Associated with an Increased Risk of Opisthorchis viverrini-Associated Hepatobiliary Abnormalities and Cholangiocarcinoma.

Korean J Parasitol

August 2021

WHO Collaborating Centre for Research and Control of Opisthorchiasis (Southeast Asian Liver Fluke Disease), Tropical Disease Research Centre, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand.

Despite the synergistic effect of Opisthorchis viverrini and Helicobacter pylori co-infection on pathogenesis of severe hepatobiliary abnormalities (HBA) including advanced periductal fibrosis and replace with cholangiocarcinoma (CCA) have been established, the immune response to H. pylori in O. viverrini infected population has never been explored.

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A systematic review and meta-analysis were conducted to clarify the effect of an early mobilisation programme on the prevention of hospital-acquired pressure injuries in an intensive care unit as opposed to standard care. We searched a total of 11 databases until 1 May 2020 and included seven studies (n = 7.520) related to the effect of early mobilisation protocol in the prevention of hospital-acquired pressure injuries (five quasi-experimental and two random comparative).

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Article Synopsis
  • - The study aims to estimate HIV and active syphilis prevalence among sexually active individuals in Zambia and examine factors related to co-infection.
  • - Data from the 2016 Zambia Population-based HIV Impact Assessment included nearly 19,114 individuals, revealing prevalence rates of 3.5% for active syphilis and 13% for HIV, with a 1.5% co-infection rate.
  • - Higher co-infection prevalence was linked to urban living, early sexual activity, and multiple sexual partners, highlighting the need for improved screening and services for those at higher risk.
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The Democratic Republic of the Congo (DRC) harbors 11% of global malaria cases, yet little is known about the spatial and genetic structure of the parasite population in that country. We sequence 2537 Plasmodium falciparum infections, including a nationally representative population sample from DRC and samples from surrounding countries, using molecular inversion probes - a high-throughput genotyping tool. We identify an east-west divide in haplotypes known to confer resistance to chloroquine and sulfadoxine-pyrimethamine.

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Transcontinental dispersal of occurred from West African origin via serial founder events.

Commun Biol

July 2020

1Vector Genetics Laboratory, Department of Pathology, Microbiology and Immunology, School of Veterinary Medicine, University of California - Davis, Davis, CA 95616 USA.

The mosquito . is distributed across most of sub-Saharan Africa and is of major scientific and public health interest for being an African malaria vector. Here we present population genomic analyses of 111 specimens sampled from west to east Africa, including the first whole genome sequences from oceanic islands, the Comoros.

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Effects of Opisthorchis viverrini infection on glucose and lipid profiles in human hosts: A cross-sectional and prospective follow-up study from Thailand.

Parasitol Int

April 2020

WHO Collaborating Centre for Research and Control of Opisthorchiasis (Southeast Asian Liver Fluke Disease), Tropical Disease Research Centre, Khon Kaen University, Khon Kaen, Thailand; Tropical Medicine Graduate Program, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand; Department of Pathology, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand. Electronic address:

Opisthorchis viverrini (OV) infection is endemic to the Northeast Thailand where the prevalence of Type 2 Diabetes mellitus (T2DM) is higher whilst the incidence of cardiovascular diseases (CVDs) is lower than the rest of Thailand. Helminth infection has both nutritional and immunological impact on their definitive hosts. Thus, a cross-sectional study was performed to see the effects of OV infection on glucose and lipid profiles.

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Objective: To estimate the burden of anemia attributable to malaria, inflammation, and deficiency of iron or vitamin A during low and high malaria seasons among Zambian children.

Study Design: From a cohort of children (n = 820), 4-8 years of age participating in a randomized controlled trial of pro-vitamin A, we estimated attributable fractions for anemia (hemoglobin of <110 or 115 g/L, by age) owing to current malaria or inflammation (C-reactive protein of >5 mg/L, or α-1 acid glycoprotein of >1 g/L, or both), and current or prior iron deficiency (ID; defined as low ferritin [<12 or 15 μg/L for age <5 or >5 years] or functional ID [soluble transferrin receptor of >8.3 mg/L] or both) and vitamin A deficiency (retinol of <0.

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Introduction: Filariasis, a neglected tropical helminth disease needs vaccine besides mass drug administration for its successful eradication.

Methods: An attempt was made to produce a fusion protein (P-TUFT-ALT-2) of abundant larval transcript protein-2 and Tuftsin to enhance its immunogenicity. The fusion construct was expressed in , a nonexpensive commercial expression system.

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A large proportion of ongoing malaria parasite transmission is attributed to low-density subclinical infections not readily detected by available rapid diagnostic tests (RDTs) or microscopy. gametocyte carriage is subclinical, but gametocytemic individuals comprise the parasite reservoir that leads to infection of mosquitoes and local transmission. Effective detection and quantification of these carriers can help advance malaria elimination strategies.

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Helminthic infections lead to the release of various molecules which play an important role in modulation of the host immune system. Such filarial proteins with immunomodulatory potential can be used for therapeutic purpose in inflammatory and immune mediated diseases. In the present study, we have explored the prophylactic effect of filarial SXP-RAL family protein of i.

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Background: The Mycobacterium tuberculosis (MTB) uridine diphosphogalactofuranose (UDP)-galactopyranose mutase (UGM) is an essential flavoenzyme for mycobacterial viability and an important component of cell wall. It catalyzes the interconversion of UDP-galactopyranose into UDP-galactofuranose, a key building block for cell wall construction, essential for linking the peptidoglycan and mycolic acid cell wall layers in MTB through a 2-keto intermediate. Further, as this enzyme is not present in humans, it is an excellent therapeutic target for MTB.

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Background: Insecticide-treated nets (ITNs) reduce malaria morbidity and mortality in endemic areas. Despite increasing availability, the use of ITNs remains limited in some settings. Poor malaria knowledge is a barrier to the widespread use of ITNs.

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Inflammation-induced hyporetinolemia (IIH), a reduction in serum retinol (SR) during inflammation, may bias population estimates of vitamin A deficiency (VAD). The optimal adjustment for IIH depends on the type and extent of inflammation. In rural Zambian children (4-8 years, = 886), we compared three models for defining inflammation: α-1-acid glycoprotein (AGP) only (inflammation present if > 1 g/L or normal if otherwise), C-reactive protein (CRP) only (moderate inflammation, 5-15 mg/L; high inflammation, > 15 mg/L; or normal if otherwise) and a combined model using both AGP and CRP to delineate stages of infectious episode.

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Background: Amphimerus spp. is a liver fluke that infects humans and domestic animals. It is highly prevalent in some Ecuadorian communities.

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Type 1 diabetes (T1D) that accounts for about 5-10 % of all diabetes cases results from the autoimmune destruction of the insulin-producing beta cells in the pancreas. It is characterized by severe inflammatory reaction mediated by pronounced T helper type-1 response. Parasitic infections having the ability to skew the host immune responses towards type-2 type as a part of their defense mechanism are able to induce protection against autoimmune diseases like T1D.

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Beyond the entomological inoculation rate: characterizing multiple blood feeding behavior and Plasmodium falciparum multiplicity of infection in Anopheles mosquitoes in northern Zambia.

Parasit Vectors

January 2017

The W. Harry Feinstone Department of Molecular Microbiology and Immunology, The Johns Hopkins Malaria Research Institute, Johns Hopkins Bloomberg School of Public Health, 615 North Wolfe Street, Baltimore, MD, 21205, USA.

Background: A commonly used measure of malaria transmission intensity is the entomological inoculation rate (EIR), defined as the product of the human biting rate (HBR) and sporozoite infection rate (SIR). The EIR excludes molecular parameters that may influence vector control and surveillance strategies. The purpose of this study was to investigate Anopheles multiple blood feeding behavior (MBF) and Plasmodium falciparum multiplicity of infection (MOI) within the mosquito host in Nchelenge District, northern Zambia.

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Background: Fasciolosis remains a significant food-borne trematode disease causing high morbidity around the world and affecting grazing animals and humans. A deeper understanding concerning the molecular mechanisms by which Fasciola hepatica infection occurs, as well as the molecular basis involved in acquiring protection is extremely important when designing and selecting new vaccine candidates. The present study provides a first report of microarray-based technology for describing changes in the splenic gene expression profile for mice immunised with a highly effective, protection-inducing, multi-epitope, subunit-based, chemically-synthesised vaccine candidate against F.

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