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Resultados 141-150 de 539
Expression, purification, and bioactivity of a soluble recombinant ovine interferon-tau in Escherichia coli
2021
Yu Hai-Yang | Gao Dong-Mei | Zhou Wei | Xia Bing-Bing | He Zhi-Yuan | Wu Bo | Jiang Min-Zhi | Wang Ming-Li | Zhao Jun
Ovine interferon-tau (oIFN-τ) is a newly discovered type I interferon. This study used biochemical techniques to transform the oIFN-τ gene into Escherichia coli to obtain the mass and soluble expression of the recombinant protein.
Mostrar más [+] Menos [-]The impact of selected risk factors on the occurrence of highly pathogenic avian influenza in commercial poultry flocks in Poland
2021
Gierak Anna | Śmietanka Krzysztof
Introduction of highly pathogenic avian influenza virus (HPAIV) into a country and its further spread may have a devastating impact on the poultry industry and lead to serious economic consequences. Various risk factors may increase the probability of HPAI outbreak occurrence but their relative influence is often difficult to determine. The study evaluates how the densities of selected poultry species and proximity to the areas inhabited by wild birds impacted HPAI outbreak occurrence during the recently reported epidemics in Poland.
Mostrar más [+] Menos [-]The presence of Ehrlichia canis in Rhipicephalus bursa ticks collected from ungulates in continental Eastern Europe
2021
Matei Ioana Adriana | Ionică Angela Monica | Corduneanu Alexandra | Domșa Cristian | Sándor Attila D.
Rhipicephalus bursa is a common tick parasite of small-to-medium size ungulates, principally in warm, temperate, and subtropical areas. Although common in livestock and showing a wide geographic distribution, its epidemiological role in tick-borne bacterial disease is barely known. This study addressed the knowledge gap and aimed to screen for the presence of Anaplasmataceae and spotted fever group (SFG) Rickettsia species in R. bursa ticks collected from domestic animals in Romania, Eastern Europe.
Mostrar más [+] Menos [-]Characterisation of a new molecule based on two E2 sequences from bovine viral diarrhoea-mucosal disease virus fused to the human immunoglobulin Fc fragment
2021
González Pose Alaín | Montesino Seguí Raquel | Maura Pérez Rafael | Hugues Salazar Florence | Cabezas Ávila Ignacio | Altamirano Gómez Claudia | Sánchez Ramos Oliberto | Roberto Toledo Jorge
Proper conformational arrangement of the E2 molecules of bovine viral diarrhoea-mucosal disease virus (BVD-MDV) is crucial to obtain an effective recombinant vaccine candidate against the disease. In this study, we characterised a new molecule composed of two distinct sequences of the E2 glycoprotein of BVD-MDV and the Fc fragment of human immunoglobulin (BVDE2Fc).
Mostrar más [+] Menos [-]In vivo study of the oestrogenic activity of milk
2021
Radko Lidia | Posyniak Andrzej
Milk has been suggested to be a possible source of oestrogenically active compounds. In order to assess the health risk for milk consumers and ensure the safety of this staple part of the human diet, it is important to study the effect of xenooestrogen mixtures present in milk. This investigation used the available in vivo model to learn to what extent such compounds may be endocrine disruptors.
Mostrar más [+] Menos [-]Effects of tyrosine kinase inhibitor-masitinib mesylate on canine mammary tumour cell lines
2021
Ustun-Alkan Fulya | Bakırel Tülay | Üstüner Oya | Anlas Ceren | Cinar Suzan | Yıldırım Funda | Gürel Aydın
Masitinib mesylate, a selective tyrosine kinase inhibitor of the c-KIT receptor, is used for the treatment of mast cell tumours in dogs. Masitinib has previously been investigated in various cancers; however, its potential anticancer effect in canine mammary tumours (CMTs) is unknown. In the present paper, we investigated the antiproliferative effect of masitinib in CMT cells and its possible mechanisms of action.
Mostrar más [+] Menos [-]Luteolin attenuates cognitive dysfunction induced by chronic cerebral hypoperfusion through the modulation of the PI3K/Akt pathway in rats
2021
He Haitao | Chen Xi
In our study, we evaluated the beneficial effect of luteolin in the treatment of cognitive dysfunction in rat models induced by cerebral hypoperfusion by two-vessel occlusion (2-VO).
Mostrar más [+] Menos [-]High-throughput sequencing in vaccine research
2021
Pasik Katarzyna | Domańska-Blicharz Katarzyna
The world of vaccines has changed tremendously since the time of Louis Pasteur. In the present day, it is regarded as vaccinology, a discipline which includes not only the knowledge of vaccine production, strategies for its delivery and influence on the clinical course of disease and the response of the host immune system but also regulatory, ethical, economic and ecological aspects of their use. A hundred years after Pasteur created the first vaccine, there was another scientific breakthrough of great importance in this field, i. e. Sanger sequencing. Progress in genome sequencing and other molecular techniques over the intervening 40 years has been enormous. High-throughput sequencing (HTS) platforms and bioinformatics tools are becoming widely available, falling in cost, and results are achieved very quickly. They enable the construction of modern vaccines, as well as the assessment of their safety, effectiveness and impact on the host organism and the environment. These techniques can also provide a tool for quality control of vaccines. Unprecedented possibilities are opened up by the HTS technique, but limiting factors on its implementation have to be contended with such as lack of reference materials and problems with method optimisation or validation. In the face of the current COVID-19 pandemic, a significant role is allotted to this sequencing technique while an effective vaccine against the disease caused by SARS-CoV-2 is sough.
Mostrar más [+] Menos [-]Mink SARS-CoV-2 infection in Poland – short communication
2021
Domańska-Blicharz Katarzyna | Orłowska Anna | Smreczak Marcin | Niemczuk Krzysztof | Iwan Ewelina | Bomba Arkadiusz | Lisowska Anna | Opolska Justyna | Trębas Paweł | Potyrało Patrycja | Kawiak-Sadurska Magdalena | Rola Jerzy
Since April 2020, when the first SARS-CoV-2 infection was reported in mink and subsequently in mink farm workers in the Netherlands, it has been confirmed that human-to-mink and mink-to-human transmission can occur. Later, SARS-CoV-2 infections in mink were reported in many European and North American countries.
Mostrar más [+] Menos [-]The protective action of piperlongumine against mycobacterial pulmonary tuberculosis in its mitigation of inflammation and macrophage infiltration in male BALB/c mice
2021
Lu Nihong | Yang Yongrui | Li Xiaofei | Li Jie | Cheng Jie | Lv Zhengxuan | Du Yingrong
Piperlongumine (PL) is a bioactive alkaloid and medicinal compound of piperamide isolated from the long pepper (Piper longum Linn). It has demonstrated bactericidal action against Mycobacterium tuberculosis (MTB), the cause of pulmonary tuberculosis; nevertheless, immunomodulatory activity had not been identified for it in MTB-triggered granulomatous inflammation. This study investigated if piperlongumine could inhibit such inflammation.
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