Publications by authors named "Gonzalvez M"

Introduction: Intestinal microeukaryote parasites are major contributors to the burden of diarrhoea in humans and domestic animals, but their epidemiology in wildlife is not fully understood. We investigated the frequency, genetic diversity and zoonotic potential of protists of animal and public health significance in free-ranging grey wolf (Canis lupus) populations in south-western Europe.

Methods: Individually formed faecal samples collected from necropsied wolves or scat trails in Italy (n = 47), Portugal (n = 43) and Spain (n = 225) during the period 2011-2023 were retrospectively analysed using molecular (PCR and Sanger sequencing) methods.

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Leishmaniosis, caused by phlebotomine sand fly-borne Leishmania spp., is a multi-host and zoonotic disease in tropical, subtropical and temperate climates, worldwide. Leishmania infantum is the only endemic pathogenic species in Europe, and exposure to this protozoan has previously been reported in a wide range of wild mammals, including felids.

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Bagaza virus (BAGV; Orthoflavivirus bagazaense) is an emerging vector-borne flavivirus affecting avian species with severe implications for animal health, and whose zoonotic potential has also been suggested. The aim of the present study was to monitor the epidemic outbreak of BAGV in wild birds from Spain in 2021. BAGV cases were confirmed in game bird species, including red-legged partridges (Alectoris rufa) and common pheasants (Phasianus colchicus) from 24 hunting areas.

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  • * A study conducted from 2007 to 2021 in Spain found that 28.3% of 258 tested NHPs had antibodies indicating exposure to Leptospira spp., with the highest seropositivity observed in Hominidae species and certain wildlife centers.
  • * This research represents the largest survey of Leptospira spp. in European NHPs, identifying exposure in nine species for the first time and underscoring the importance of monitoring these animals in captivity for conservation and health reasons.
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  • Recent cases of Leishmania infantum infection in non-human primates (NHPs) in Spain have led to severe health issues, particularly in endangered orangutans.
  • A study analyzed serum and hair samples from 252 NHPs across 15 centers in Spain to assess exposure to the parasite, revealing a 4% antibody presence and significant kDNA detection in hair samples (62.8%).
  • The research identifies body size and age (≥5 years) as main risk factors for infection, marking the first extensive survey of L. infantum in European NHPs and highlighting hair sampling as a non-invasive detection method.
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  • - Clinical cases of bluetongue virus infection and related deaths have been documented in Eurasian lynx.
  • - Iberian lynx populations, both wild and captive, showed frequent exposure to bluetongue virus serotypes 1 and 4 through surveillance.
  • - The exposure to these virus serotypes in the Iberian lynx may result from spillover events occurring from nearby ruminant animals.
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Background: To evaluate the level of knowledge and risk perception regarding vector-borne diseases in the Spanish society and identify the risk factors associated with the level of understanding.

Methodology: An online survey was conducted between January and May 2021, targeting Spanish adults. The survey consisted of 11 questions assessing knowledge and risk perception related to vector-borne diseases.

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  • Leptospirosis is a global bacterial disease affecting both animals and humans, with wild carnivores like wolves serving as potential reservoirs for the pathogen.
  • A study analyzed kidney samples from 281 free-ranging wolves in southern Europe (Spain and Italy) to assess the presence of Leptospira spp. using real-time PCR.
  • Results showed a low prevalence of 3.2%, with Leptospira DNA found in 5% of Spanish wolves, but none in Italian wolves, highlighting the need for monitoring these populations in relation to leptospirosis and public health.
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  • A clinical study compared the effectiveness and safety of Eyestil Plus® and Vismed Multi® in treating keratitis lesions in patients with moderate-to-severe dry eye disease.
  • Conducted as a randomized, double-blind trial, the study involved 96 adults receiving either treatment for 3 months, measuring outcomes such as corneal staining scores, tear film stability, and safety.
  • The results indicated that Eyestil Plus® was not inferior to Vismed Multi® in performance and safety, with high satisfaction among investigators and a 16.6% rate of adverse events among participants.
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Under voltammetric conditions, the neutral decamethylferrocene ([MeFc]) to cationic ([MeFc]) Fe process is a well-known reversible outer-sphere reaction. A companion cationic [MeFc] to dicationic [MeFc] Fe process has been reported under direct current (DC) cyclic voltammetric conditions at highly positive potentials in liquid SO at low temperatures and in a 1.5:1.

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  • - Wild rabbits and Iberian hares in southern Spain are significant reservoirs for Leishmania infantum, which causes a major outbreak of leishmaniosis in Europe.
  • - A survey from 2018 to 2021 tested 631 animals, finding 56.4% exposed to the parasite, with higher seroprevalence in Iberian hares (19.4%) than in wild rabbits (10.6%).
  • - Key risk factors included the meso-Mediterranean climate and goat presence in hunting grounds, with positive cases found in 64.8% of the sampled locations in Andalusia.
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Introduction: Giardiosis remains one of the most prevalent enteric parasitic infections globally. Earlier molecular-based studies conducted in Egypt have primarily focused on paediatric clinical populations and most were based on single genotyping markers. As a result, there is limited information on the frequency and genetic diversity of infections in individuals of all age groups.

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  • EHD virus serotype 8 (EHDV-8) was identified in Spain in autumn 2022, affecting mainly European red deer.
  • The study involved confirming infections in sick red deer and examining the spatial spread of the virus over the 2022/2023 period, where severe clinical signs and lesions were observed.
  • A serological study found EHDV-8 antibodies in 6.3% of sampled wild ruminants, indicating a limited spread of the virus in Spain during its first year.
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  • - We found rat hepatitis E virus (HEV) RNA in pigs raised on farms in Spain.
  • - This suggests that pigs could catch rat HEV and potentially transmit it to humans, acting as a link between rodents and people.
  • - Europe needs to check how common rat HEV is in farmed pigs to understand the possible health risks to the public.
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Between December 2020 and January 2021, an outbreak of acute mortality in endangered Barbary macaques (Macaca sylvanus) kept in captivity was detected in a zoo in Spain. The main findings observed in the two fatally affected animals at post-mortem evaluation were jaundice, renal tubular necrosis and interstitial nephritis. Leptospira spp.

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The severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) is an emerging zoonotic virus of public and animal health concern, of which felids have been suggested as potential reservoirs. Although SARS-CoV-2 exposure has been detected in domestic and wild captive animals belonging to Felidae family, surveillance has not been carried out in free-ranging wild felids so far. The aim of the present study was to assess SARS-CoV-2 exposure in the Iberian lynx (Lynx pardinus), the most endangered felid in the world.

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The di-2-pyridylthiosemicarbazone (DpT) analogs demonstrate potent and selective anti-proliferative activity against human tumors. The current investigation reports the synthesis and chemical and biological characterization of the Fe(iii), Co(iii), Ni(ii), Cu(ii), Zn(ii), Ga(iii), and Pd(ii) complexes of the promising second generation DpT analog, di-2-pyridylketone-4-ethyl-4-methyl-3-thiosemicarbazone (Dp4e4mT). These studies demonstrate that the Dp4e4mT Co(iii), Ni(ii), and Pd(ii) complexes display distinct biological activity those with Cu(ii), Zn(ii), and Ga(iii) regarding anti-proliferative efficacy against cancer cells and a detrimental off-target effect involving oxidation of oxy-myoglobin (oxy-Mb) and oxy-hemoglobin (oxy-Hb).

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The wide distribution and ecological plasticity of the red fox (Vulpes vulpes) make it a potential reservoir for many infectious diseases shared with domestic and wild carnivores. One of such diseases is canine distemper, which is caused by an RNA virus and its main domestic reservoir is the dog. However, other carnivores can also participate in its maintenance, as shown by the recent upsurge of reported cases in wildlife in many parts of the world, and by the fact that red foxes may act as true reservoirs for canine distemper virus (CDV).

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The computing environment has revolutionized the management and analysis of data in sciences during the last decades. This study aimed to evaluate the use of R software in research articles addressing the study of wildlife worldwide, particularly focusing on the research area "Veterinary Sciences". For this purpose, a systematic review mainly performed in the Web of Science database was conducted.

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Toxoplasmosis, neosporosis, and Q fever are among the most important abortifacient diseases in ruminants worldwide. These diseases result in huge economic losses in livestock besides the fact that some of are of public health concern. The present study aimed to update the data about the current seroepidemiological situation of these diseases in Upper Egypt.

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The di-2-pyridylketone thiosemicarbazones demonstrated marked anticancer efficacy, prompting progression of DpC to clinical trials. However, DpC induced deleterious oxy-myoglobin oxidation, stifling development. To address this, novel substituted phenyl thiosemicarbazone (PPP4pT) analogues and their Fe(III), Cu(II), and Zn(II) complexes were prepared.

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The reaction of three [Fe(TSC)] complexes, where TSC is a pyridine-substituted thiosemicarbazone of the HDpT or HBpT families, with HO in acetonitrile solution does not result in the accumulation of the corresponding [Fe(TSC)] complexes. Instead, a mixture of diamagnetic low-spin Fe species is generated. According to the MS spectra, those species result from the sequential addition of up to five oxygen atoms to the complex.

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Vulture feeding stations (VFS) are strategic sites for the management of ungulate game by-products, with major implications for the conservation of obligate avian scavengers. These feeding points are designed to prevent access by facultative mammalian scavengers and to reduce the risk of trophically transmitted pathogen infection through scavenging behaviour. The aim of this study, using camera trap video recordings, was to evaluate the feeding dynamics around 32 lots of ungulate game by-products deposited in VFS in southern Spain.

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Introduction. Dengue has been the most widespread mosquito-borne disease worldwide in recent years. It develops with a broad spectrum of clinical manifestations and sometimes progresses to a critical condition known as severe dengue.

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