Letícia Pereira Úngari, Alejandro Oceguera-Figueroa, Gerardo Torres-Carrera, Edward Charles Netherlands, André Luiz Quagliatto Santos, Reinaldo José da Silva, Lucia Helena O Dwyer
Species of Haemogregarina are blood parasites known to parasitise vertebrate hosts, including fishes (Haemogregarina sensu lato) and freshwater turtles (Haemogregarina sensu stricto). Their vectors, include gnathiid isopods and leeches, respectively. In turtles, Haemogregarina balli has the best-characterized life cycle in the genus. However, no studies in Brazil have suggested a possible vector for any species of Haemogregarina from freshwater turtles. Therefore, in the present study, we provide insights into a leech vector based on specimens found feeding on two species of freshwater turtles, Podocnemis unifilis and Podocnemis expansa, using morphological and molecular data...
June 22, 2024: Parasitology Research
Margarita María Catalina Bisio, Laura Smeldy Jurado Medina, Facundo García-Bournissen, Julián Ernesto Nicolás Gulin
Sterol 14-demethylase (CYP51) inhibitors, encompassing new chemical entities and repurposed drugs, have emerged as promising candidates for Chagas disease treatment, based on preclinical studies reporting anti-Trypanosoma cruzi activity. Triazoles like ravuconazole (RAV) and posaconazole (POS) progressed to clinical trials. Unexpectedly, their efficacy was transient in chronic Chagas disease patients, and their activity was not superior to benznidazole (BZ) treatment. This paper aims to summarize evidence on the global activity of CYP51 inhibitors against T...
June 21, 2024: Parasitology Research
Anaïs Esposito, Gaël P J Denys, Vincent Haÿ, Paul-Jean Agostini, Joséphine Foata, Yann Quilichini
Introduced species have a major impact on freshwater ecosystems, particularly on islands. Numerous fish species have been introduced in Corsica (Mediterranean island, southern France) as part of planned programs or clandestinely. The introduction of non-native freshwater fish species can have a range of impacts on the recipient ecosystem, including through the co-introduction of its pathogens. A sample of introduced perch Perca fluviatilis Linnaeus, 1758 from the artificial reservoir of Padula was examined following a report of parasites by an angler...
June 20, 2024: Parasitology Research
Débora Carvalho Rodrigues, Carolina Netto de Oliveira da Cunha, Gabriela Torres Mattos, Lourdes Helena Rodrigues Martins, Thais Cristina Mendonça Nogueira, Marcus Vinícius Nora de Souza, Luciana Farias da Costa de Avila, Daniela Fernandes Ramos, Carlos James Scaini
Human toxocariasis is a neglected anthropozoonosis with global distribution. Treatment is based on the administration of anthelmintics; however, their effectiveness at the tissue level is low to moderate, necessitating the discovery of new drug candidates. Several groups of synthetic compounds, including coumarin derivatives, have demonstrated bioactivity against fungi, bacteria, and even parasites, such as Dactylogyrus intermedius, Leishmania major, and Plasmodium falciparum. The aim of this study was to evaluate the effect of ten coumarin-derived compounds against Toxocara canis larvae using in vitro, cytotoxicity, and in silico tests for selecting new drug candidates for preclinical tests aimed at evaluating the treatment of visceral toxocariasis...
June 19, 2024: Parasitology Research
Willison do Carmo, Luciano Anjos, Davor Vrcibradic
Acanthocephalans, in their adult stage, are obligatory parasites of many types of vertebrates, including anuran amphibians. Their complex life cycle always involves an arthropod intermediate host but may include non-obligatory strategies that could improve transmission success, such as paratenic infections. In paratenic hosts, these parasites are normally found loose in the body cavity or encysted in internal organs. Here, we present the first report of acanthocephalans found encysted under the skin of an amphibian (i...
June 17, 2024: Parasitology Research
Ana Cristina Jesus Silveira Martins, Marlon Almeida-Santos, Robson Waldemar Ávila, Carla Costa Siqueira, Carlos Frederico Duarte Rocha
We describe the composition of endoparasites associated with leaf litter anurans from an Atlantic Forest area, in southeastern Brazil. We tested if body size, sex, and reproductive modes of anuran hosts influence endoparasite abundance and richness. We sampled 583 individuals from 11 anuran species and recorded 1,600 helminths from 14 taxa. The helminths that infected the greatest number of anuran host species were the nematodes Cosmocerca parva (8 spp.), Physaloptera sp. (8 spp.), and Cosmocerca brasiliense (7 spp...
June 15, 2024: Parasitology Research
Aarón Mondragón-Martínez, Diego Marroquin-Vilchez, Rosa Martínez-Rojas, Lidia Cruz-Neyra, Eduardo A Pulido-Murillo, Marcos A Sulca-López, Celso Luis Cruces, Jhon Darly Chero, Enrique García-Candela, Jefferson Yunis-Aguinaga
Diphyllobothriosis, a fish-borne zoonosis in South America, is mainly caused by the Pacific broad tapeworm Adenocephalus pacificus Nybelin, 1931, a parasite of considerable concern in fishery resources due to its impact on public health. A new diphyllobothrid, Diphyllobothrium sprakeri Hernández-Orts et al. Parasites Vectors 14:219, 2021, was recently described from sea lions from the Pacific Coast, but marine fish acting as intermediate hosts are unknown. The objective of this study was to confirm the presence of plerocercoid larvae of Diphyllobothriidae Lühe, 1910 (Cestoda: Diphyllobothriidea) in nine fish species of commercial importance in Peru...
June 14, 2024: Parasitology Research
Angélica Paulina Nunes, Yasmin Munhoz Dos Santos, Raquel Arruda da Silva Sanfelice, Virgínia Marcia Concato-Lopes, Taylon Felipe Silva, Fernanda Tomiotto-Pellissier, Danielle Lazarin-Bidoia, Rayanne Regina Beltrame Machado, Luiz Daniel de Barros, João Luis Garcia, Ivete Conchon-Costa, Wander Rogério Pavanelli, Renata Katsuko Takayama Kobayashi, Bellisa de Freitas Barbosa, Eloisa Amália Vieira Ferro, Idessania Nazareth Costa
No abstract text is available yet for this article.
June 13, 2024: Parasitology Research
Noor Akbar, Ruqaiyyah Siddiqui, Mohammed I El-Gamal, Naveed Ahmed Khan, Seyed-Omar Zaraei, Balsam Qubais Saeed, Ahmad M Alharbi, Nihar Ranjan Dash
Managing primary amoebic meningoencephalitis, induced by Naegleria fowleri poses a complex medical challenge. There is currently no specific anti-amoebic drug that has proven effectiveness against N. fowleri infection. Ongoing research endeavours are dedicated to uncovering innovative treatment strategies, including the utilization of drugs and immune modulators targeting Naegleria infection. In this study, we explored the potential of imidazo[2,1-b]thiazole and imidazooxazole derivatives that incorporate sulfonate and sulfamate groups as agents with anti-amoebic properties against N...
June 12, 2024: Parasitology Research
Susan Jarvi, John Jacob, Alfred Mina, Malia Lyons
Rat lungworm disease or neuroangiostrongyliasis is a cerebral parasitic infection that affects humans and animals alike. Its clinical signs and symptoms can range from mild self-resolving to serious life-threatening conditions. Studies suggest therapeutic interventions during the early stages of infection to be more effective than in later stages. However, early diagnosis of infection is usually problematic without the knowledge of exposure and/or detection of the parasite's DNA or antibody against the parasite in the cerebrospinal fluid...
June 12, 2024: Parasitology Research
Leandro Batista das Neves, Tuan Pedro Dias-Correia, Fernanda Bittencourt-Oliveira, Thiago Cordeiro Pereira, Fernanda Barbosa de Almeida, Rosângela Rodrigues-Silva
Echinococcus granulosus sensu lato (s.l.) is a species complex with the potential to cause cystic echinococcosis (CE). Contact with the feces of domestic dogs (Canis familiaris) fed with raw viscera of intermediate livestock hosts is a risk factor for this infection in the southern region of Brazil. Although the region has been considered endemic to CE for many years, molecular data regarding the species of the complex causing CE in humans are scarce. This study aimed to perform a molecular analysis of the biological fluid from a human liver cyst to investigate the species responsible for CE...
June 11, 2024: Parasitology Research
Baoping Guo, Cairen, Li Zhao, Kalibixiati Aimulajiang, Wenqiang Tang, Chuanchuan Wu, Maiweilidan Yimingjiang, Jianyong Wu, Rongsheng Mi, Hao Wen
Echinococcosis is a worldwide disease endemic to the western region of China. In 2023, echinococcosis was detected in one of 27 wild boars (Sus scrofa) in Yili Prefecture, Xinjiang, northwestern China. Histopathological staining and full sequence mitochondrial (mt) analysis were used to determine the infection genotype. Echinococcus granulosus was detected in the wild boar liver, and the cystic lesion characteristics indicated the E. granulosus genotype (G1). This case is the first confirmation of wild boar serving as a transmitter for the G1 genotype of E...
June 10, 2024: Parasitology Research
Jenny Jost, Jörg Hirzmann, Ľudovít Ďureje, Denny Maaz, Peer Martin, Thomas Stach, Emanuel Heitlinger, Víctor Hugo Jarquín-Díaz
Mastophorus muris (Gmelin, 1790) is a globally distributed parasitic nematode of broad range mammals. The taxonomy within the genus Mastophorus and the cryptic diversity among the genus are controversial among taxonomists. This study provides a detailed morphological description of M. muris from Mus musculus combined with a molecular phylogenetic approach. Moreover, descriptions and molecular data of M. muris from non-Mus rodents and wildcats complement our findings and together provide new insights into their taxonomy...
June 10, 2024: Parasitology Research
Samia Layouni, Latifa Remadi, Abdelhamid Kidar, Raja Chaâbane-Banaoues, Najoua Haouas, Hamouda Babba
Zoonotic cutaneous leishmaniasis (ZCL) is a neglected tropical disease caused by Leishmania (L.) major. This zoonosis is characterized by a broad-spectrum clinical polymorphism and may be underestimated and poorly treated since it is a simulator of various dermatoses. The aim of our study was to analyze the clinical polymorphism of patients with ZCL. A total of 142 patients with confirmed CL based on the microscopic examination of skin lesion biopsies were included in this study. Molecular typing of Leishmania species revealed that all patients were infected with L...
June 10, 2024: Parasitology Research
Chatuthanai Savigamin, Pathamet Khositharattanakool, Puckavadee Somwang, Supaporn Wacharapluesadee, Padet Siriyasatien, Kanok Preativatanyou
Enterocytozoon bieneusi is a common cause of human microsporidiosis and can infect a variety of animal hosts worldwide. In Thailand, previous studies have shown that this parasite is common in domestic animals. However, information on the prevalence and genotypes of this parasite in other synanthropic wildlife, including bats, remains limited. Several pathogens have been previously detected in bats, suggesting that bats may serve as a reservoir for this parasite. In this study, a total of 105 bat guano samples were collected from six different sites throughout Thailand...
June 8, 2024: Parasitology Research
Diogo Almeida, Antonio Teixeira Rodrigues, Jose Pedro Guerreiro, Ewa Bałkowiec-Iskra, Robert Vander Stichele, Bruno Sepodes, Carla Torre
This study aims to assess the effect of the COVID-19 pandemic on the consumption of self-care products for pediculosis capitis management, in Portugal. A segmented regression analysis of interrupted time series (March 2020) was performed from January 2017 to August 2023 to analyze the short- and long-term impact of the COVID-19 pandemic on the consumption of pediculicides and related products. Monthly rates of absolute consumption were estimated by community pharmacies' dispensing records. Portuguese municipalities were organized into quintiles according to their purchasing power index and percentage of youth, to study the association of these social and demographic variables on the sale of these products...
June 8, 2024: Parasitology Research
Dimitris Dimzas, Selene Rubiola, Laura Pacifico, Vincenzo Veneziano, Francesco Chiesa, Taxiarchis Chassalevris, Anastasia Diakou
The genus Sarcocystis includes protozoan parasites with an indirect life cycle. Sarcocystis spp. can infect various animal species and humans, causing sarcocystosis, a parasitosis of economic importance and zoonotic concern. Wild boars can act as intermediate hosts for Sarcocystis miescheriana and the zoonotic Sarcocystis suihominis that infects humans by consumption of raw or undercooked infected swine meat. In the present study, the diaphragmatic muscle tissue of 123 wild boars hunted in Greece was examined to determine the frequency of Sarcocystis spp...
June 8, 2024: Parasitology Research
Santiago Nava, Maria V Rossner, Jose R Toffaletti, Miguel Da Luz, M Belen Rossner, Marcelo Signorini, Nicolás Morel
This work evaluated if strategic control based on no more than three or four annual treatments is useful to control Rhipicephalus microplus infestations on cattle when it is applied to intensive rotational grazing and silvopastoral systems with high stocking rates in subtropical areas. In the intensive rotational grazing system, three annual treatments with chemical acaricides were applied on cattle in two different schemes: between spring and early summer and from late winter and late spring. Strategic control based on three treatments with chemical acaricides from late winter to late spring plus an additional fourth treatment in summer was tested in the silvopastoral system...
June 7, 2024: Parasitology Research
Ping Li, Bowen Zhang, Yafei Zhao, Rong Chen, Fuchang Yu, Meng Qi, Zhenjie Zhang
Cryptosporidium spp. are protozoa commonly found in domestic and wild animals. Limited information is available on Cryptosporidium in deer worldwide. In this study, 201 fecal samples were collected from Alpine musk deer on three farms in Gansu Province, China. Detection and subtyping of Cryptosporidium were performed by PCR and sequence analysis of the SSU rRNA and gp60 genes. The prevalence of Cryptosporidium infection in Alpine musk deer was 3.9% (8/201), with infection rates of 1.0% (1/100), 2.8% (1/36), and 9...
June 3, 2024: Parasitology Research
Aisha Jamo Suleiman, Daphne E Mavrides, Sadiya Maxamhud, Eleni Gentekaki, Anastasios D Tsaousis
Cryptosporidium is an important water-borne and food-borne parasite with a high burden of disease. This organism has been shown to contaminate various leafy vegetables; however, studies assessing the presence of Cryptosporidium spp in pre-washed and ready-to-eat vegetables are limited. Routine surveillance in the UK revealed a nationwide exceedance of human cases of Cryptosporidium. Therefore, this study aims to assess the presence of this parasite in pre-washed vegetables from supermarkets in the UK. A total of 36 samples were purchased from four different supermarkets...
June 1, 2024: Parasitology Research
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