Publications by authors named "Jairo Alfonso Mendoza Roldan"

Background: Dirofilaria immitis and D. repens are mosquito-borne filaroids that primarily infect dogs but also cats. Diagnosing feline dirofilariosis is challenging because of the low parasitic burdens and transient or absent microfilaremia.

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The detection of Leishmania tarentolae in sympatric areas where Leishmania infantum is endemic raised questions regarding the protective effect exerted in dogs by L. tarentolae when in coinfection. This study aimed monitoring the in vitro gene expression of pro- (IFN- γ; TNF-α; IL-12) and anti-inflammatory (IL-4; IL-6; IL-10) cytokines in primary canine macrophages infected by L.

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Article Synopsis
  • In areas where canine leishmaniosis is common, the non-pathogenic Leishmania tarentolae coexists with the harmful Leishmania infantum, raising questions about their interactions and potential immune responses in dogs.
  • The study involved infecting twelve beagle dogs with L. tarentolae to measure antibody production, immunity duration, cytokine response, and any pathogenic effects, monitoring them over 206 days.
  • Findings showed that L. tarentolae is non-pathogenic, with detectable DNA for up to three months post-infection, and suggests its potential use as a protective measure or treatment against harmful Leishmania species in dogs and possibly humans.
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Reptiles in the wild or as pets may act as spreaders of bacteria, viruses, fungi and parasites. However, studies on the mycobiota of these animals are scanty. This study investigates the occurrence of yeasts from the cloacal swabs of snakes of different origins and the antifungal profile of the isolated strains.

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The order Testudines comprises some of the most endangered groups of vertebrates. Under specific circumstances, infectious and parasitic diseases may affect the survival and fecundity of these animals, potentially threatening Testudines populations. In Sardinia, besides the three species of tortoises present in the wild (Testudo hermanni, Testudo graeca and Testudo marginata), many others are kept as pets.

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Article Synopsis
  • A study was conducted to evaluate the prevalence and risk factors of Leishmania infantum infections in domestic cats across six Mediterranean countries, where canine leishmaniosis is common but limited feline data exists.
  • Blood and serum samples from 2,067 cats were collected between 2019 and 2022, with a focus on various factors like age, sex, and geographical origin, and tests for L. infantum and other viral infections were performed.
  • The study found that 17.3% of the cats tested positive for L. infantum, with the highest prevalence observed in Portugal (24.7%) and Greece (23.2%).
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Equids may be infected by zoonotic Leishmania spp., including Leishmania infantum, in regions where canine leishmaniasis (CanL) is endemic, and Leishmania martiniquensis, which has been reported in horses from Central Europe. This study was designed to evaluate the occurrence of both Leishmania spp.

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Colpodella species are close relatives of Apicomplexan protozoa. Although most species of this genus are free-living organisms that feed on other protists and algae, reports indicate their occurence in ticks and human patients, including an individual with a history of tick bite manifesting neurological symptoms. During an investigation of tick-borne pathogens (TBPs) in blood samples of cattle, goats, and in ticks collected on them, Colpodella sp.

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Article Synopsis
  • * Leishmania tarentolae, a microorganism, is a potential platform for producing recombinant proteins, although its cultivation typically requires animal-derived supplements.
  • * The study found that Schneider's Drosophila Medium, when supplemented with Horseradish Peroxidase, effectively supported the growth of Leishmania tarentolae, allowing for the sustained production of a viral antigen without antibiotics for up to 12 weeks.
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ParSCo (Parasitology Summer Course) is an intense, 1-week-long summer course organized by the Parasitology Unit of the Department of Veterinary Medicine, University of Bari, Italy, with the support of the World Association for the Advancement of Veterinary Parasitology (WAAVP), the European Veterinary Parasitology College (EVPC) and Parasites and Vectors. The course, which is conducted in southern Italy, is planned for parasitologists and post-graduate students working in the field of parasitology. The course consists of theoretical and practical lessons, which include the collection, identification and diagnosis of parasites of pets, livestock and wildlife.

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While in much of the Western world snakes are feared, in the small, rural, mountainous town of Cocullo, in the middle of central Italy, snakes are annually collected and celebrated in a sacro-profane ritual. Every 1st of May, Serpari (snake catchers) capture and showcase dozens of non-venomous snakes to celebrate the ritual of San Domenico. In order to detect potential zoonotic pathogens within this unique epidemiological context, parasites and microorganisms of snakes harvested for the "festa dei serpari" ritual were investigated.

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Background: Visceral leishmaniosis caused by infection with the zoonotic protozoan Leishmania infantum is a life-threatening disease affecting dogs and humans. The sympatric occurrence of L. infantum and Leishmania tarentolae in an area of southern Italy endemic for canine leishmaniosis, where dogs are also exposed to the latter species, suggests the persistence of herpetophilic L.

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On Linosa Island, Italy, Dirofilaria immitis infection has been hyperendemic in dogs and seroprevalent among islanders. In 2020, we implemented a heartworm disease elimination program on Linosa Island. Of 54 dogs tested for D.

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The world-famous markets of Marrakech, also known in Arabic as souks, harbor a vast diversity of reptiles that are sold for medicinal/magic/pet purposes or used for snake charming. This unique epidemiological context has never been studied considering the interactions of humans, reptiles, and zoonotic pathogens. Thus, the aim of this study was to identify the parasites and pathogens present in blood and feces associated with handled reptiles in the markets of Marrakech to assess the risk of zoonotic transmission within the reptile-human interface.

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Background: Squamate reptiles cohabiting with companion animals may represent a source of helminth infections, especially through predation by dogs and cats with an outdoor lifestyle.

Methods: In order to assess the role of reptiles as intermediate/paratenic hosts of trophically transmitted helminths, synanthropic reptiles (n = 245) captured from different ecological settings (i.e.

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Invasive wild mammals are present in all continents, with Europe, North America, and the Asian-Pacific region having the largest number of established species. In particular, Europe has been the continent with the highest number of zoonotic parasites associated with invasive wild mammals. These invasive species may represent a major threat for the conservation of native ecosystems and may enter in the transmission cycle of native parasites, or act as spreaders of exotic parasites.

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Astroviruses have been identified in a wide variety of animal species and are associated with gastro-intestinal disease in humans. Pathologies due to extra-intestinal localization are known in different hosts. We report the detection of astroviruses in synanthropic squamate reptile species (Podercis siculus and Tarentola mauritanica).

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Leishmania tarentolae is a non-pathogenic species first isolated from geckoes in the Mediterranean basin. The finding that dogs test positive against both Leishmania infantum and L. tarentolae raises questions regarding the ability of the latter species to persist and adapt to new hosts.

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Article Synopsis
  • - Visceral leishmaniasis, caused by the parasite Leishmania infantum, often shows no symptoms but can affect immunosuppressed individuals; exposure among outdoor workers is not well-studied.
  • - A study in southern Italy analyzed 229 outdoor workers (including forestry guards, farmers, and veterinarians) and found a 5.7% positivity rate for anti-L. infantum antibodies, with veterinarians showing the highest prevalence at 13.6%.
  • - The findings suggest a need for improved health surveillance and education for outdoor workers regarding L. infantum exposure, emphasizing collaboration between various health professionals to prevent the disease.
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Background: Sergentomyia minuta (Diptera: Phlebotominae) is an abundant sand fly species in the Mediterranean basin and a proven vector of reptile parasite Leishmania (Sauroleishmania) tarentolae. Although it feeds preferentially on reptiles, blood meal analyses and detection of Leishmania (Leishmania) infantum DNA in wild-caught S. minuta suggest that occasional feeding may occur on mammals, including humans.

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Background: The Asian elephant (Elephas maximus), which is an endangered species, harbors several parasites. Among the ectoparasites that it harbors, ear mites of the genus Loxanoetus have the potential to cause external otitis, an inflammation that may also be associated with the presence of other microorganisms. We assessed the relationships between ear mites, nematodes, yeast, bacterial rods, and cocci sampled from the ears of captive Asian elephants in Thailand.

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  • Wolbachia is a type of bacteria found in certain arthropods and nematodes, like Dirofilaria immitis, and may trigger a specific immune response (Th1) that could be important for combating Leishmania infantum infections in dogs.* -
  • In a study of 187 clinically healthy dogs, various tests were conducted to quantify Wolbachia and L. infantum DNA, as well as assess cytokine levels, revealing that a significant proportion of dogs positive for D. immitis were also positive for Wolbachia.* -
  • The findings indicated a complex relationship between D. immitis and Wolbachia, with cytokine levels differing among groups; notably,
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One of the most common behaviors of cats that have an indoor/outdoor lifestyle is to bring hunted "gifts" to their owners, represented by small mammals, reptiles and birds. Access to the outdoors by dogs and cats may represent a problematic issue, since they may be at risk of diseases, traffic accidents and ingestion of toxins. Yet, the impact of this population of roaming dogs and cats predating wildlife is another concerning issue that receives less attention.

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Parasites of the genus Leishmania are unusual unicellular microorganisms in that they are characterized by the capability to subvert in their favor the immune response of mammalian phagocytes, including dendritic cells. Thus, in overt leishmaniasis, dendritic cells and macrophages are converted into a niche for Leishmania spp. in which the parasite, rather than being inactivated and disassembled, survives and replicates.

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Background: Ophionyssus natricis is the main species of mite that infests captive reptiles. High infestations may result in the host experiencing general discomfort and deleterious effects, even death. Moreover, O.

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