Publications by authors named "Alejandro Cabezas Cruz"

Mosquitoes are well-known vectors for a range of pathogens, including parasites, which cause malaria in reptiles, birds, and mammals [...

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Vector-borne diseases pose significant challenges for both animal and public health worldwide [...

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Malaria remains a significant global health challenge, with the deadliest infections caused by . In light of the escalating drug resistance and the limited effectiveness of available vaccines, innovative treatment approaches are urgently needed. This study explores the potential of the probiotic YZ01, isolated from traditionally fermented kindirmo milk, to modify host responses to ANKA infection.

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  • Migratory birds can carry ticks and be reservoirs for tick-borne pathogens (TBPs) based on a study conducted on Ixodes ricinus ticks from specific bird species in Poland.
  • A high-throughput microfluidic real-time PCR method was used to detect TBPs in ticks, revealing that 47.41% of the specimens were infected with at least one TBP, with differences in prevalence among the bird species studied.
  • Phylogenetic analysis indicated the circulation of specific haplotypes of TBPs, suggesting that the ticks are widely distributed across various hosts in Central Europe.
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The Western honey bee () is a vital agricultural pollinator whose populations are threatened by the parasitic mite destructor and associated pathogens. While the impact of species on honey bees, particularly larvae causing American foulbrood, is documented, their effect on the microbiota of mites remains unclear. This study aimed to investigate the influence of sp.

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Tick-borne encephalitis (TBE) is a vaccine-preventable viral infection that poses significant public health challenges, particularly in regions where tick-borne diseases are endemic. This case report describes a 2-year-old boy with confirmed abortive TBEV infection following a tick bite during travel to Switzerland. The patient developed fever and mild symptoms but did not exhibit central nervous system involvement.

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  • Mosquitoes are important vectors for diseases, making it essential to understand their microbiota to improve disease management strategies.
  • The study found distinct microbial compositions and interaction patterns between two mosquito species, Culex pipiens f. molestus and Culex quinquefasciatus, with Escherichia-Shigella being more widespread and interacting with many network nodes in both species, while Wolbachia showed species-specific associations.
  • Computer simulations demonstrated that the removal of microorganisms impacted network stability differently in the two species, indicating the unique role of each bacterium in maintaining microbial networks.
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An infection with the tick-borne has been associated with a broad spectrum of clinical manifestations in humans, but patients are only seldomly reported. Understanding its disease etiology necessitates well-stablished infection models, improving to recognize and diagnose patients with infection and facilitating the development of effective control strategies. In this study, we used C3H/HeN mice as a model to establish infection, achieving a high infection prevalence (89-100 %).

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  • - This study builds on previous research about how antibiotics affect the tick microbiota, particularly the transmission of Babesia microti, by comparing antibiotic-treated (AT) and control-treated (CT) Haemaphysalis longicornis ticks to observe changes in their microbial community interactions.
  • - Results indicated that AT ticks had a more connected but less interactive microbial community, showing significant differences in network centrality measures, which reflect how different bacteria interact within the community.
  • - The findings highlight that certain bacteria like Coxiella and Acinetobacter play key roles in maintaining network stability, and the antibiotic treatment made these networks less robust, indicating a higher susceptibility to disturbances.
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Tick-borne rickettsioses, caused by Gram-negative bacteria of the Rickettsia genus, pose a growing global threat, with various arthropod vectors contributing to their transmission. Understanding the complex interactions within tick microbiota, including the role of Rickettsia species, is crucial for elucidating the dynamics of rickettsial diseases. Here, we investigate the taxonomic profiles and co-occurrence networks of Rickettsia in Rh.

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  • * Researchers identified 11 ixodid tick species, using molecular techniques for classification, and found similarities with species from Asia and Africa.
  • * The study detected a variety of tick-borne pathogens (TBPs), with Rickettsia massiliae and Theleria ovis being the most common, highlighting their importance for both zoonotic diseases and veterinary health in the region.
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  • Research identified different strains of Bartonella sp. in bats and their ectoparasitic mites, highlighting a gap in studies focused on bacterial pathogens in insectivorous bats of boreal forests.
  • Molecular analysis of mite samples from bats across the Palearctic region revealed Bartonella DNA in several mite species, with larger mite pools showing a higher prevalence of these bacteria.
  • The presence of Bartonella spp. was linked to cave-dwelling bats and generalist mites, suggesting that these mites could act as reservoirs, maintaining and potentially spreading Bartonella infections within bat populations.
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The honeybee (Apis mellifera) is a key pollinator critical to global agriculture, facing threats from various stressors, including the ectoparasitic Varroa mite (Varroa destructor). Previous studies have identified shared bacteria between Varroa mites and honeybees, yet it remains unclear if these bacteria assemble similarly in both species. This study builds on existing knowledge by investigating co-occurrence patterns in the microbiomes of both Varroa mites and honeybees, shedding light on potential interactions.

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The Ornithodoros moubata (Om) soft tick, a vector for diseases like tick-borne human relapsing fever and African swine fever, poses challenges to conventional control methods. With diminishing insecticide efficacy, harnessing the tick's microbiota through innovative approaches like microbiota-driven vaccination emerges as a promising strategy for sustainable and targeted disease control. This study investigated the intricate relationship between Pseudomonas, a keystone taxon in the Om microbiome, and its impact on tick fitness, microbiome structure and network dynamics.

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Objectives: The Balkan Peninsula, acting as a crossroad between central Europe and the Middle East, presents diverse ecosystems supporting various tick species capable of transmitting TBDs. This study focuses on Serbia and North Macedonia, both endemic for TBDs, aiming to investigate human-biting ticks' prevalence, TBD prevalence, and major TBPs in blood samples.

Patients And Methods: This prospective observational study was conducted in 2022 at two medical centers, involving 45 patients from Novi Sad, Serbia, and 17 patients from Skopje, North Macedonia.

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Ticks are important vectors of disease, particularly in the context of One Health, where tick-borne diseases (TBDs) are increasingly prevalent worldwide. TBDs often involve co-infections, where multiple pathogens co-exist in a single host. Patients with chronic Lyme disease often have co-infections with other bacteria or parasites.

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  • Tick paralysis is a serious condition caused by toxins from tick saliva, affecting domestic animals like goats, sheep, dogs, and cats in Cyprus, particularly on the Akamas peninsula.
  • * Affected animals show no other neurological issues, maintain normal blood parameters, and typically recover quickly after tick removal.
  • * The condition exhibits periodic cycles of occurrence every 3 and 7 years, with variations in severity, pointing to the need for research into the toxins involved and potential vaccine development to protect free-ranging livestock.
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Understanding the intricate ecological interactions within the microbiome of arthropod vectors is crucial for elucidating disease transmission dynamics and developing effective control strategies. In this study, we investigated the ecological roles of Coxiella-like endosymbiont (CLE) and Anaplasma marginale across larval, nymphal, and adult stages of Rhipicephalus microplus. We hypothesized that CLE would show a stable, nested pattern reflecting co-evolution with the tick host, while A.

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This research explores the association between ABO blood groups and susceptibility to SARS-CoV-2 infection, analyzing Convalescent COVID-19 plasma (CCP) donors ( = 500) and healthy whole blood donors (BDs) ( = 9678) during the pandemic (1 May 2020 to 30 April 2021). A comparison is made with pre-pandemic BDs ( = 11,892) from 1 May 2018 to 30 April 2019. Significant differences in blood group distribution are observed, with blood group A individuals being three times more likely to be CCP donors.

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Breast cancer, a global health concern affecting women, has been linked to alterations in the gut microbiota, impacting various aspects of human health. This study investigates the interplay between breast cancer and the gut microbiome, particularly focusing on colonization resistance-an essential feature of the microbiota's ability to prevent pathogenic overgrowth. Using a mouse model of breast cancer, we employ diversity analysis, co-occurrence network analysis, and robustness tests to elucidate the impact of breast cancer on microbiome dynamics.

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Upon ingestion from an infected host, tick-borne pathogens (TBPs) have to overcome colonization resistance, a defense mechanism by which tick microbiota prevent microbial invasions. Previous studies have shown that the pathogen alters the microbiota composition of the nymphs of , but its impact on tick colonization resistance remains unclear. We analyzed tick microbiome genetic data using published Illumina 16S rRNA sequences, assessing microbial diversity within ticks (alpha diversity) through species richness, evenness, and phylogenetic diversity.

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Despite the significant health risks associated with infestations in humans, they are often overlooked. This study investigated a household case of infestation and explored the resulting clinical manifestations and risk of infection in family members. Microfluidic PCR was employed for high-throughput screening of pathogens in collected mites and blood samples from both chickens and family members.

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Lyme borreliosis (LB) is the most commonly diagnosed tick-borne disease in the northern hemisphere. Since an efficient vaccine is not yet available, prevention of transmission is essential. This, in turn, requires a thorough comprehension of the spatiotemporal dynamics of LB transmission as well as underlying drivers.

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Interactions within the tick microbiome involving symbionts, commensals, and tick-borne pathogens (TBPs) play a pivotal role in disease ecology. This study explored temporal changes in the microbiome of , an important cattle tick vector, focusing on its interaction with . To overcome limitations inherent in sampling methods relying on questing ticks, which may not consistently reflect pathogen presence due to variations in exposure to infected hosts in nature, our study focused on ticks fed on chronically infected cattle.

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Dengue has had a significant global health impact, with a dramatic increase in incidence over the past 50 years, affecting more than 100 countries. The absence of a specific treatment or widely applicable vaccine emphasizes the urgent need for innovative strategies. This perspective reevaluates current evidence supporting the concept of dual protection against the dengue virus (DENV) through natural antibodies (NAbs), particularly anti-α-Gal antibodies induced by the host's gut microbiome (GM).

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