7,095 results match your criteria Acta Tropica[Journal]


High-performance triplex PCR detection of three tapeworm species belonging to the genus Raillietina in infected poultry.

Acta Trop 2022 May 14:106516. Epub 2022 May 14.

Applied Parasitology Research Laboratory, Department of Biology, Faculty of Science, Srinakharinwirot University, Bangkok, 10110, Thailand; Research and innovation unit for diagnosis of medical and veterinary important parasites, Faculty of Science, Srinakharinwirot University, Bangkok, 10110, Thailand. Electronic address:

Chickens and ducks are important sources of essential proteins and nutrition for global consumption, especially their eggs and meat. Tapeworm infections in chickens and ducks are the cause of serious poultry health and economic problems in the processing of livestock and food production systems. Raillietina are cosmopolitan in distribution and are possibly the most common tapeworm parasites. Read More

View Article and Full-Text PDF

A recombinant protein vaccine encoding Toxoplasma gondii Cyst wall 2 (dense granule protein 47) provides partial protection against acute and chronic T. gondii infection in BALB/c mice.

Acta Trop 2022 May 14:106514. Epub 2022 May 14.

Xinxiang Key Laboratory of Pathogenic Biology, Department of Pathogenic Biology, School of Basic Medical Sciences, Xinxiang Medical University, Xinxiang, China. Electronic address:

Toxoplasma gondii poses a major threat to economies and public health, and there are still no available vaccines for human against T. gondii infection. T. Read More

View Article and Full-Text PDF

Mites, rodents, and pathogens: a global review for a multi-species interaction in disease ecology.

Acta Trop 2022 May 12:106509. Epub 2022 May 12.

Laboratorio de Ecología de Enfermedades y Una Salud, Departamento de Etología, Fauna Silvestre y Animales de Laboratorio, Facultad de Medicina Veterinaria y Zootecnia, Universidad Nacional Autónoma de México, Mexico City, Mexico. Electronic address:

More than ever, there is a need to understand how pathogens, vectors and hosts occur temporally and spatially to predict the occurrence of zoonotic outbreaks. Related to this, mites of the Mesostigmata and Trombidiformes orders have the potential to transmit several diseases, yet their information of occurrence, distribution and zoonotic accompanying agents have not been systematically organized. We conducted a systematic review using a combination of words through the Sysrev platform, as well as literature searches in specialised databases to identify global patterns of infections, trends in mite-rodent-pathogen research and existing knowledge gaps. Read More

View Article and Full-Text PDF

Updated spatio-temporal distribution of Aedes (Stegomyia) albopictus in Brazil.

Acta Trop 2022 May 11:106511. Epub 2022 May 11.

Graduate Program in Health Sciences, Universidade do Sul de Santa Catarina, Tubarão, Santa Catarina, Brazil; Postgraduate Program in Environmental Sciences, Universidade do Sul de Santa Catarina, Tubarão, Santa Catarina, Brazil.

Aedes albopictus is native to Asia and is ranked among the top 100 invasive species worldwide, with vector competence for dengue, Zika, and chikungunya viruses. Understanding Ae. albopictus dispersal is essential for effective monitoring and vector control strategies. Read More

View Article and Full-Text PDF

Molecular detection of blood meal source up to three months since the last meal: Experimental starvation resistance in triatomines.

Acta Trop 2022 May 11:106507. Epub 2022 May 11.

Laboratorio de Biologia de Tripanosomatideos, Instituto Oswaldo Cruz, FIOCRUZ, Av. Brasil 4365, 21040-360, Rio de Janeiro, RJ, Brazil. Electronic address:

The identification of Blood Meal Source (BMS) in hematophagous vectors contributes to a better understanding of the ecology of hemoparasite transmission. Those insects can endure long periods without feeding, waiting for a favorable setting. Although this represents an important behavior observed in those groups, such as triatomines, little is known about how time can affect BMS detection, especially considering extended periods. Read More

View Article and Full-Text PDF

Tissue tropism: Is it an intrinsic characteristic of Leishmania species?

Acta Trop 2022 May 11:106512. Epub 2022 May 11.

Laboratory of Parasitology and Vector-Borne-Diseases, Institut Pasteur du Maroc, Casablanca, Morocco. Electronic address:

The genus Leishmania comprises a wide range of species, some of which are pathogenic to humans and each of which has a different tissue preference, resulting in one of the three clinical forms of human leishmaniasis: visceral, cutaneous, or mucocutaneous. Although, all pathogenic species are deposited intradermally in the mammalian host upon an infectious sand fly bite, only the viscerotropic strains can leave the skin and reach the internal organs. We assume that Leishmania tissue tropism is not only the result of Leishmania genetic determinism but is also governed by the interaction of the parasite with different vectorial and human host elements. Read More

View Article and Full-Text PDF

Geographical distribution of hard ticks (Acari:Ixodidae) and tick-host associations in Benin, Burkina-Faso, Ivory-Coast and Togo.

Acta Trop 2022 May 11:106510. Epub 2022 May 11.

Department of Parasitology and Parasitic Diseases, University of Agricultural Sciences and Veterinary Medicine of Cluj-Napoca, 3-5 Calea Mănăştur, 400372, Cluj-Napoca, Romania.

Knowledge of ticks and associated pathogens is crucial to assess the risk of exposure of humans and animals to pathogens. For this review, we collected relevant data from published articles and field collections to provide an update on the biodiversity of ticks, and tick-host associations in four countries of West Africa: Benin, Burkina-Faso, Ivory-Coast, and Togo. The literature review was done according to Preferred Reporting Items for Systematic Reviews and Meta-Analysis (PRISMA) guidelines. Read More

View Article and Full-Text PDF

Direct and indirect antiparasitic effects of chloroquine against the virulent RH strain of Toxoplasma gondii: An experimental study.

Acta Trop 2022 May 11;232:106508. Epub 2022 May 11.

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

Background: Toxoplasmosis is a deleterious parasitic disease with harmful impact on both humans and animals. The present study was carried out to evaluate the antiparasitic effect of chloroquine (CQ), spiramycin (SP), and combination of both against the highly virulent RH HXGPRT (-) strain of Toxoplasma gondii (T. gondii) and to explore the mechanisms underlying such effect. Read More

View Article and Full-Text PDF

Chrysomya pinguis (Walker) (Diptera: Calliphoridae), blow fly of forensic importance: A review of bionomics and forensic entomology appraisal.

Acta Trop 2022 May 10:106506. Epub 2022 May 10.

Department of Parasitology, Faculty of Medicine, Chiang Mai University, Thailand. Electronic address:

Role of blow flies as the entomological evidence used in forensic investigations has risen dramatically worldwide. As the diverse habitats of Thailand suitably endowed with biodiversity of insects, blow flies of forensic importance need investigation in their bionomics, which are further applied in forensic investigations. Chrysomya pinguis (Walker, 1858) (Diptera: Calliphoridae) make up one of the most common blow fly species found associated with the human corpses and/or death scenes in several countries of the Asia continent. Read More

View Article and Full-Text PDF

Pintomyia evansi (Diptera: Psychodidae) larvae susceptibility to hydrated lime under laboratory conditions.

Acta Trop 2022 May 10:106505. Epub 2022 May 10.

Programa de Estudio y Control de Enfermedades Tropicales - PECET, Universidad de Antioquia, Carrera 53 Number 61 - 30, Laboratory 632, Medellín 050003, Colombia. Electronic address:

This study evaluated the effect of Calcium hydroxide (Ca(OH) Mg(OH)) on third stages Pi. evansi larvae mortality under experimental laboratory conditions. Three treatments containing a mixture of phlebotomine natural breeding soil (substrate) and Calcium hydroxide at different concentrations were used: Treatment 1 (T1), 1 kg of substrate mixed with 56. Read More

View Article and Full-Text PDF

First influenza D virus full-genome sequence retrieved from livestock in Namibia, Africa.

Acta Trop 2022 May 7;232:106482. Epub 2022 May 7.

The Kirby Institute, UNSW Sydney, Sydney, NSW 2052, Australia.

Influenza D virus (IDV) was first isolated in 2011 in the USA and has since been shown to circulate in cattle, pigs, sheep, wild boar, and camels. In Africa, there is limited data on the epidemiology of IDV and, so, we investigated the presence of IDV among domestic ruminants and wild animals in Namibia by screening nasal swabs using an IDV-specific molecular assay. IDV RNA was detected in bovines (n=2), giraffes (n=2) and wildebeest (n=1). Read More

View Article and Full-Text PDF

Ecomorphological variation of the Triatoma guasayana wing shape in semi-arid Chaco region.

Acta Trop 2022 May 6;232:106488. Epub 2022 May 6.

Universidad Nacional de Córdoba, Grupo de Ecología y Control de Vectores, Instituto de Diversidad y Ecología Animal (IDEA-CONICET), CONICET Cordoba, Rondeau 798 (Jardín Zoológico) AVP, Córdoba X5000, Argentina.

Triatoma guasayana (Hemiptera, Reduviidae), considered a secondary vector of Chagas disease, invades rural dwellings through flight dispersal during the warm season in semi-arid Chaco of Argentina. The objective of this study was to define and compare morphometrics features in the relative body size and wing shape of T. guasayana related to temperature and rainfall between spring, summer and end of summer. Read More

View Article and Full-Text PDF

Description of mitochon genome and phylogenetic considerations of Sabethes bipartipes, Sabethes cyaneus, Sabethes quasicyaneus, and Sabethes tarsopus (Diptera: Culicidae).

Acta Trop 2022 May 4;232:106493. Epub 2022 May 4.

Post-graduate program in Parasitary Biology in the Amazon, Center of Biological and Health Sciences, State of Pará University, Belém 66095-662, Brazil; Evandro Chagas Institute - IEC/SVS/MS, Department of Arbovirology and Hemorrhagic Fevers, Ananindeua 67030-000, Brazil. Electronic address:

The genus Sabethes (Diptera: Culicidae) comprises species of great epidemiological relevance, particularly involved in transmission cycles of the Yellow fever virus in South America. Given the unavailability of information related to aspects of evolutionary biology and molecular taxonomy of species of this genus of mosquitoes, we report here the first sequencing of the mitochondrial genomes of Sabethes bipartipes, Sabethes cyaneus, Sabethes tarsopus, and Sabethes quasicyaneus. The sequences obtained showed an average length of 14,920 bp, comprising 37 functional genes (13 PCGs, 22 tRNA, and 02 rRNA). Read More

View Article and Full-Text PDF

IDENTIFICATION OF BLOOD MEAL SOURCES IN SPECIES OF GENUS Rhodnius IN FOUR DIFFERENT ENVIRONMENTS IN THE BRAZILIAN AMAZON.

Acta Trop 2022 May 4:106486. Epub 2022 May 4.

Instituto de Ciências Biomédicas 5, Universidade de São Paulo (ICB-5, USP), Monte Negro, Brazil; Centro de Pesquisa em Medicina Tropical de Rondônia (CEPEM)/Secretaria de Estado da Saúde de Rondônia, Porto Velho, Brazil; Instituto Nacional de Epidemiologia da Amazônia Ocidental INCT-EPIAMO, Porto Velho, Brazil; Departamento de Medicina, Centro Universitário São Lucas, Porto Velho, Brazil. Electronic address:

Chagas disease is a zoonotic disease caused by the hemoflagellate Trypanosoma cruzi and transmitted primarily by triatomine vectors. Triatomines are hematophagous insects that feed on a variety of vertebrate hosts. The Chagas disease transmission cycle is closely related to the interactions between vectors, parasites, and vertebrate hosts. Read More

View Article and Full-Text PDF

Vector-borne pathogens of zoonotic concern in hunting dogs of southern Italy.

Acta Trop 2022 May 3:106502. Epub 2022 May 3.

Department of Veterinary Medicine, University of Bari Aldo Moro, 70010 Valenzano (Bari), Italy; Faculty of Veterinary Sciences, Bu-Ali Sina University, Hamedan, Iran. Electronic address:

Dogs are commonly exposed to vector-borne pathogens (VBPs), yet few data are available on hunting dogs, which are often at high risk of infection due to their involvement in field activities. To investigate the occurrence of VBPs and evaluate the relative performance of different diagnostic tools, blood and serum samples were collected from hunting dogs (n = 1,433) in rural areas of southern Italy. All samples were tested by Knott's technique for filarioids, serologically (SNAP® 4Dx® Plus) for Anaplasma spp. Read More

View Article and Full-Text PDF

Molecular epidemiology, phylogenetic analysis and risk assessment of Anaplasma marginale from naturally infected bovines of Punjab (India).

Acta Trop 2022 May 3;232:106499. Epub 2022 May 3.

Department of Animal Genetics & Breeding, Guru Angad Dev Veterinary and Animal Sciences University, Ludhiana 141 001, Punjab, India.

Anaplasmosis, an infectious vector borne rickettsial disease caused by different species of Anaplasma transmitted through mechanical and biological (tick) processes has a great concern to livestock industry due to its associated economic losses. The current cross sectional comprehensive epidemiological study was conducted from August 2020 to November 2021 on 391 (277 cattle and 114 buffaloes) bovines from different districts of five agro climatic zones of Punjab state. Classical microscopic examination of Romanowsky stained blood smears showed an occurrence of 13. Read More

View Article and Full-Text PDF

Intra-genomic heterogeneity in CpG dinucleotide composition in dengue virus.

Acta Trop 2022 May 2;232:106501. Epub 2022 May 2.

Sri Venkateswara College, South Campus, University of Delhi, New Delhi 110021, India. Electronic address:

Purpose: Dengue virus is a life-threatening virus and cases of dengue infection have been increasing steadily in the past decades causing millions of deaths every year. So far, there is no vaccine that works effectively on all serotypes. Recently, CpG-recoded vaccines have proved to be effective against few viruses. Read More

View Article and Full-Text PDF

Immunogenicity and safety studies of an inactivated vaccine against Rift Valley fever.

Acta Trop 2022 May 2;232:106498. Epub 2022 May 2.

Istituto Zooprofilattico Sperimentale dell'Abruzzo e del Molise G. Caporale, Teramo, Italy.

Rift Valley fever (RVF) is an emerging transboundary, mosquito-borne, zoonotic viral disease caused by a single serotype of a virus belonging to the Phenuiviridae family (genus Phlebovirus). It is considered an important threat to both agriculture and public health in endemic areas, because the virus, transmitted by different mosquito genera, leads to abortions in susceptible animal hosts especially sheep, goat, cattle, and buffaloes, resulting in severe economic losses. Humans can also acquire the infection, and the major sources are represented by the direct contact with infected animal blood, aerosol, consumption of unpasteurized contaminated milk and the bite of infected mosquitoes. Read More

View Article and Full-Text PDF

Vitamin D modulates the expression of Toll-like receptors and pro-inflammatory cytokines without affecting Chikungunya virus replication, in monocytes and macrophages.

Acta Trop 2022 May 1;232:106497. Epub 2022 May 1.

Grupo Inmunovirología, Facultad de Medicina, Universidad de Antioquia UdeA, Calle 70 No. 52-21, Medellín, Colombia. Electronic address:

Chikungunya virus (CHIKV) is a zoonotic arthropod-borne virus that causes Chikungunya fever (CHIKF), a self-limiting disease characterized by myalgia and acute or chronic arthralgia. CHIKF pathogenesis has an important immunological component since higher levels of pro-inflammatory factors, including cytokines and chemokines, are detected in CHIKV-infected patients. In vitro studies, using monocytes and macrophages have shown that CHIKV infection promotes elevated production of pro-inflammatory cytokines and antiviral response factors. Read More

View Article and Full-Text PDF

Ultrastructure of sensilla on the antennae and maxillary palpi of the human-biting black flies, Simulium nigrogilvum and Simulium umphangense, (Diptera: Simuliidae) in Thailand.

Acta Trop 2022 May 1;232:106494. Epub 2022 May 1.

Center of Insect Vector Study, Department of Parasitology, Faculty of Medicine, Chiang Mai University, Chiang Mai 50200, Thailand. Electronic address:

Antennae and maxillary palpi are the most important sensory organs involved in the behaviors of black flies. The ultrastructure of sensilla on these sensory appendages of two human-biting black fly species, Similium nigrogilvum and Simulium umphangense, was studied for the first time. Wild adult females of both species were collected in Umphang District, Tak Province, western Thailand. Read More

View Article and Full-Text PDF

Threat under cats' claws: Molecular detection and risk factors for zoonotic Bartonella species in blood and claw samples from cats in Brazil.

Acta Trop 2022 May 1;232:106496. Epub 2022 May 1.

Departamento de Ciências Agrárias e Ambientais, Hospital Veterinário, Universidade Estadual de Santa Cruz - UESC, Campus Soane Nazaré de Andrade, Ilhéus, BA, Brazil. Electronic address:

Bartonelloses are zoonoses widely dispersed throughout the world caused by bacteria of the genus Bartonella. Domestic cats play an important role in the epidemiology of bartonelloses, since these animals are considered natural hosts of B. henselae, B. Read More

View Article and Full-Text PDF

Sharp-nosed Pit Viper (Deinagkistrodon acutus) from Taiwan and China: A comparative study on venom toxicity and neutralization by two specific antivenoms across the Strait.

Acta Trop 2022 May 2;232:106495. Epub 2022 May 2.

Venom Research and Toxicology Laboratory, Department of Pharmacology, Faculty of Medicine, University of Malaya, Kuala Lumpur, Malaysia. Electronic address:

In East Asia, the Sharp-nosed Pit Viper (Deinagkistrodon acutus) is a medically important venomous snake in Taiwan and China, two geographical areas long separated by the Taiwan Strait. Yet, snake venom variation is little known between specimens found across the Strait. This study thus investigated the intra-species variation of D. Read More

View Article and Full-Text PDF

Sand fly bioecological aspects and risk mapping of leishmaniasis by geographical information systems approach in a mineral exploration area of Brazil.

Acta Trop 2022 Apr 30;232:106491. Epub 2022 Apr 30.

Grupo de Estudos em Leishmanioses, Instituto René Rachou (Fiocruz Minas), 30190-002, Belo Horizonte, MG, Brazil.

Epidemiological studies of leishmaniasis in areas of great human influence and environmental change serve as important tools for the implementation of effective control plans. Mining is currently a major economic activity in Brazil with the municipality of Pains, in the state of Minas Gerais, being one of the main lime producing municipalities in the country. This study aimed to map areas of potential transmission risks within the municipality of Pains using an epidemiological approach in association with the ecological study of sand flies. Read More

View Article and Full-Text PDF

Leishmania infantum infection rate in dogs housed in open-admission shelters is higher than of domiciled dogs in an endemic area of canine visceral leishmaniasis. Epidemiological implications.

Acta Trop 2022 Apr 29;232:106492. Epub 2022 Apr 29.

Grupo de Estudos em Leishmanioses, Fundação Oswaldo Cruz (FIOCRUZ) Minas, Centro de Pesquisas René Rachou, Fundação Oswaldo Cruz, Avenida Augusto de Lima, Instituto René Rachou, 1715 Barro Preto, Belo Horizonte, MG, Brazil. Electronic address:

Canine visceral leishmaniasis (CVL) is caused by Leishmania infantum and is endemic in many areas of southeastern Brazil. We have hypothesized that the prevalence of infection by L. infantum in dogs housed in open-admission animal shelters is beyond the range of 3. Read More

View Article and Full-Text PDF

Echinococcosis in immunocompromised patients: A systematic review.

Acta Trop 2022 Apr 28:106490. Epub 2022 Apr 28.

Research Center for Hydatid Disease in Iran, Afzalipour School of Medicine, Kerman University of Medical Sciences, Kerman, Iran.

Background: Human echinococcoses are the infection caused by the larval stages of different species of the genus Echinococcus, mostly E. granulosus and E. multilocularis. Read More

View Article and Full-Text PDF

Molecular characterization of Enterobacter aerogenes isolated from urinary tract infections in Iran.

Acta Trop 2022 Apr 26;232:106485. Epub 2022 Apr 26.

Department of Microbiology, Faculty of Basic Sciences, Shahrekord Branch, Islamic Azad University, Shahrekord, Iran.

The prevalence of multidrug-resistant Enterobacter aerogenes strains in UTIs is increasing. Therefore, the purpose of this study was to examine the mechanisms of resistance in Enterobacter aerogenes strains isolated from the urinary tract of infected patients. To achieve this goal, 786 urine samples from Shahrekord, Iran, were collected from June 2019 to February 2020. Read More

View Article and Full-Text PDF

Insight on Bluetongue virus transmission in small ruminants in Senegal.

Acta Trop 2022 Apr 26;232:106487. Epub 2022 Apr 26.

Laboratoire National de l'Elevage et de Recherches Vétérinaires (ISRA-LNERV), Institut Sénégalais de Recherches Agricoles, BP: 2057 Dakar-Hann, Sénégal. Electronic address:

Bluetongue (BT) is an infectious, arthropod-borne viral disease of domestic and wild ruminants. The disease causes animal mortality, production decrease and commercial limits for herds. Despite the active circulation of the disease in the world, few studies have been carried out in Senegal. Read More

View Article and Full-Text PDF

Swift synthesis of zinc oxide nanoparticles using unripe fruit extract of Pergularia daemia: An enhanced and eco-friendly control agent against Zika virus vector Aedes aegypti.

Acta Trop 2022 Apr 27;232:106489. Epub 2022 Apr 27.

Biomaterials and Biotechnology in Animal Health Lab, Department of Animal Health and Management, Alagappa University, Karaikudi, Tamil Nadu 630004, India. Electronic address:

In this study Pergularia daemia unripe fruits were used to synthesize zinc oxide nanoparticles (Pd-ZnONPs). UV-vis Spectroscopy detected the production of ZnONPs. XRD, FTIR, SEM, and TEM studies were used to characterize the synthesized Pd-ZnONPs. Read More

View Article and Full-Text PDF

In vitro effects of the 4-[(10H-phenothiazin-10-yl)methyl]-N-hydroxybenzamide on Giardia intestinalis trophozoites.

Acta Trop 2022 Apr 26;232:106484. Epub 2022 Apr 26.

Instituto Nacional de Ciência e Tecnologia em Biologia Estrutural e Bioimagens e Centro Nacional de Biologia Estrutural e Bioimagens, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brazil; Diretoria de Metrologia Aplicada a Ciências da Vida, Instituto Nacional de Metrologia, Qualidade e Tecnologia, Rio de Janeiro, RJ, Brazil. Electronic address:

Giardiasis is an intestinal disease caused by the parasite protozoan Giardia intestinalis. For more than five decades, the treatment of this disease has been based on compounds such as nitroimidazoles and benzimidazoles. The parasite's adverse effects and therapeutic failure are largely recognized. Read More

View Article and Full-Text PDF

Transcriptome profiling of plerocercoid and adult developmental stages of the neglected medical tapeworm Spirometra erinaceieuropaei.

Acta Trop 2022 Apr 22;232:106483. Epub 2022 Apr 22.

Department of Parasitology, School of Basic Medical Sciences, Zhengzhou University, Zhengzhou 450001, China. Electronic address:

The plerocercoid larvae of the tapeworm Spirometra erinaceieuropaei can parasitize humans and animals and cause serious parasitic zoonosis. However, our knowledge of the developmental process of S. erinaceieuropaei is still inadequate. Read More

View Article and Full-Text PDF