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Why does Listeria monocytogenes survive in food and food-production environments?
2023
Osek Jacek | Wieczorek Kinga
Listeria monocytogenes is one of the most dangerous food-borne pathogens and is responsible for human listeriosis, a severe disease with a high mortality rate, especially among the elderly, pregnant women and newborns. Therefore, this bacterium has an important impact on food safety and public health. It is able to survive and even grow in a temperature range from -0.4°C to 45°C, a broad pH range from 4.6 to 9.5 and at a relatively low water activity (aW < 0.90), and tolerates salt content up to 20%. It is also resistant to ultraviolet light, biocides and heavy metals and forms biofilm structures on a variety of surfaces in food-production environments. These features make it difficult to remove and allow it to persist for a long time, increasing the risk of contamination of food-production facilities and ultimately of food. In the present review, the key mechanisms of the pathogen’s survival and stress adaptation have been presented. This information may grant better understanding of bacterial adaptation to food environmental conditions.
Mostrar más [+] Menos [-]Enterovirus E infects bovine peripheral blood mononuclear cells. Implications for pathogenesis?
2023
Małaczewska Joanna | Wróbel Małgorzata | Kaczorek-Łukowska Edyta | Rękawek Wojciech
Enterovirus E (EV-E) is a common viral pathogen endemic in cattle worldwide. Little is known, however, about its potential interactions with bovine immune cells.
Mostrar más [+] Menos [-]Crosstalk between apoptosis and cytotoxic lymphocytes (CTLs) in the course of Lagovirus europaeus GI.1a infection in rabbits
2023
Niedźwiedzka-Rystwej Paulina | Deptuła Wiesław
Lagovirus europaeus is a single-stranded RNA virus causing an acute fatal disease in wild and domestic rabbits around the world. Studies have shown that the pivotal process impacting the immune response against the disease is apoptosis, registered mainly in hepatocytes and in peripheral blood, together with an increased number of cytotoxic lymphocytes (CTLs). It is known that cytotoxic lymphocytes can induce target cells to undergo apoptosis on the pseudoreceptor pathway, such apoptosis having been found in several acute and chronic viral infections. The study aimed to assess the crosstalk between the apoptosis of peripheral blood lymphocytes and CD8+ T lymphocytes (as CTLs) in rabbits infected with 6 Lagovirus europaeus GI.1a viruses.
Mostrar más [+] Menos [-]Detection of Babesia spp., Theileria spp., and Anaplasma ovis in Ornithodoros lahorensis from southern Xinjiang, China
2023
Li Siang | Zhang Liu | Zhou Peng | Li Zheng | Song Haonan | Song Yaping | Li Chuan | Xiangzheng Wanqi | Wu Junyuan
Ticks are blood-sucking arthropods that have negative economic impacts and can spread a variety of diseases through their bites. There are few reports on soft ticks (Acari: Argasidae) and tick-borne pathogens in southern Xinjiang, China. This investigation supplements the available information for this region and is concerned with an argasid tick, apicomplexan parasites of the Babesia and Theileria genera and a bacterium of the Anaplasma genus.
Mostrar más [+] Menos [-]Design, synthesis, and evaluation of peptides derived from L1 protein against bovine papillomavirus-1/2 identified along Mexico’s cattle export route
2023
García Coronado Paola Leonor | Romo Sáenz César Iván | Kawas Jorge R. | Zarate Triviño Diana Ginette | Ramos Zayas Yareellys | Elena Santana Krímskaya Silvia | Rodríguez Padilla Cristina | Armides Franco Molina Moisés
Bovine papillomatosis affects animal health and represents one of the greatest economic losses in the livestock sector. New control and prevention methods to protect the livestock industry from this disease are necessary. The aim of this study was to evaluate a candidate peptide for antibody production against bovine papillomavirus (BPV).
Mostrar más [+] Menos [-]Analysis of the effect of polymorphisms within the CATHL7 gene on dairy performance parameters
2023
Hiller Sonia | Kowalewska Inga | Czerniawska-Piątkowska Ewa | Banaszewska Dorota
Antimicrobial peptides, including cathelicidins, play a significant role in farm animals, influencing animal welfare, immunity, and thus the quality of animal products.
Mostrar más [+] Menos [-]Assessment of selected immunological parameters in dairy cows with naturally occurring mycotoxicosis before and after the application of a mycotoxin deactivator
2023
Brodzki Piotr | Marczuk Jan | Lisiecka Urszula | Krakowski Leszek | Szczubiał Marek | Dąbrowski Roman | Bochniarz Mariola | Kulpa Katarzyna | Brodzki Nikodem | Wolniaczyk Karolina
Mycotoxins in dairy cows can cause many non-specific symptoms often resulting from immune system overreaction. The study assessed the concentration of selected cytokines and acute phase proteins (APP) in cows with natural mycotoxicosis before and after using a mycotoxin neutraliser. The cytokines were tumour necrosis factor alpha (TNF-α), interleukin 6 (IL-6) and interleukin 10 (IL-10), and the APP were serum amyloid A (SAA) and haptoglobin (Hp).
Mostrar más [+] Menos [-]Retrospective study on equine viral abortions in Poland between 1999 and 2022
2023
Stasiak Karol | Socha Wojciech | Rola Jerzy
Loss of pregnancy in mares is a major cause of economic and emotional impact for horse breeders. It can have many different infectious and noninfectious causes. The aim of this study was identification of the main viral causes of abortion in mares in Poland based on tissue samples from 180 aborted foetuses submitted for testing between 1999 and 2022.
Mostrar más [+] Menos [-]Monitoring of antibiotic use in broiler turkey flocks in the Warmia and Mazury province in 2019–2021
2023
Śmialek Marcin | Konieczka Teresa | Konieczka Paweł | Kowalczyk Joanna | Koncicki Andrzej | Kozłowski Krzysztof | Jankowski Jan
The increasing resistance of bacteria to antibiotics has obliged the EU Member States to reduce by 50% the use of antibiotics in animal production by 2030. This study was undertaken with the aim to analyse the use of antibiotics in flocks of broiler turkeys reared in the Warmia and Mazury province in a two-year period.
Mostrar más [+] Menos [-]Effects of Punica granatum L. peel extract supplementation on body weight, cardiac function, and haematological and biochemical parameters in an animal model of metabolic syndrome
2023
Niewiadomska Joanna | Kumiega Ewa | Płóciennik Michał | Gajek Jacek | Noszczyk-Nowak Agnieszka
Metabolic syndrome (MetS) is a cluster of pathological conditions well described in humans but still investigated insufficiently in animals. A novel approach in its management is the utilisation of nutrients from natural sources. Recent studies suggested that phenolic compounds from pomegranate peel could be a promising dietary intervention for MetS. This study evaluated the potency of polyphenol-rich pomegranate peel extract (EPP) in mitigating some MetS components in an animal model.
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