Polish journal of veterinary sciences最新文献

The material for drug resistance testing was 28 strains of Mycobacterium caprae isolated from tissue collected post mortem from a free-living Bieszczady Mountain European bison (Bison bonasus caucasicus) herd. All drug susceptibility tests were carried out on an automated Bactec mycobacterial growth indicator tube (MGIT) 960 system, using Bactec MGIT 960 streptomycin, isoniazid, rifampin and ethambutol (S.I.R.E.) and Bactec MGIT 960 PZA kits. The analyzed M. caprae strains demonstrated susceptibility to PZA and the complement of four basic anti-mycobacterial drugs: S.I.R.E. Considering that we are dealing with multidrug-resistant and extremely drug-resistant tuberculosis more and more often, and that no new drugs have been discovered or developed for over 60 years, the study of drug resistance in free-living animal strains of MTBC is of great importance for the deepening and broadening of our knowledge of TB.

The aim of this study was to assess the in vitro penetration rate of antioxidant enriched frozen thawed Kangayam bull semen. For the current investigation, 5-7-year-old Kangayam bulls were used. The semen was collected twice per week and two ejaculates were collected each time. They were subsequently transported to the laboratory for processing of semen and maintained in a water bath at 34°C. On the day of semen collection, three groups of semen were prepared with Tris-egg-yolk Glycerol Extender (TEYG) (group I), TEGY extenders with hyaluronan (group II), and TEGY extenders with metformin (group III) and stored in a water bath at 34°C. According to the group, the semen sample was first diluted at a ratio of 1:1 with the appropriate extender (TEYG, hyaluronan enriched or metformin enriched) and kept in laminar air flow at 22°C for seven minutes. Each semen sample was then extended using the appropriate semen extender in accordance with the dilution rate. After filling, sealing and printing, the final diluted semen sample was subjected to equilibration. Freezing was done as per the standard protocol. Oocytes were collected from cyclical animals on days 1, 5, 9 after estrus using the ultrasound guided transvaginal ovum pick-up method after ablation of the day 0 pre-ovulatory follicle. After oocyte and sperm maturation, the co-incubation of oocyte and sperm was done and the in vitro penetration rate was recorded. The overall in vitro penetration rate recorded in Kangayam cows was 46.66 per cent. Maximum in vitro penetration rate was observed in group II (52 per cent) followed by group III (46 per cent) and in group I (42 per cent). Based on the above findings, it was concluded that hyaluronan enriched semen may be used as a pragmatic approach for cryopreservation of Kangayam bull semen in order to augment the in vitro penetration rate in Kangayam.

Porcine alveolar macrophages (PAMs) can resist infection caused by Mycoplasma hyopneumoniae (Mhp) through phagocytosis. However, it is unknown what gene expression changes occur in PAM after Mhp stimulation. Therefore, the differential gene expression (DGE) profiling technique was employed to analyze differentially expressed genes in PAMs infected with Mhp strain 232. Eighty-six and 889 differentially expressed (DE) genes were identified in PAMs at 12 hours post-infection (hpi) and 24 hpi. Using Gene Ontology (GO) analysis, DE genes were involved in 54 (12 hpi) and 128 (24 hpi) GO enrichment items. Using Kyoto Encyclopedia of Genes and Genomes (KEGG) analysis, DE genes were involved in 101 (12 hpi) and 250 (24 hpi) KEGG enrichment items. Using Ingenuity Pathway Analysis (IPA), DE genes were connected, forming 25 internally interacting subnetworks. STRING analysis revealed 131 proteins encoded by DE genes involved in network interactions. Five novel genes were closely related to clinical symptoms and pathological changes of Mycoplasma hyopneumoniae. This is the first study to investigate PAM transcriptional responses to Mhp infection using the DGE profiling technique.

Bisphenol A (BPA), an endocrine disrupting chemical, is an environmental toxicant widely used in the production of polycarbonate plastics, epoxy resins and paints. Ganoderma lucidum (GDL) is a plant with biological activities widely used in Chinese medicine. The present study aims to determine the effects of GDL against testicular dysfunction in rats exposed to BPA. For this purpose, a total of 24 Sprague Dawley rats, 6 rats in each group, were used in the study. Rats were administered 25 mg/kg/bw BPA and 300 mg/kg/bw GDL by oral gavage for 8 weeks. After the treatments, the rats were sacrificed, and testicular tissues were removed. One of the testes was used for biochemical analyses and the other for histopathologic examinations. The caudal part of the epididymis was trimmed, and semen was obtained. As a result, BPA increased MDA level in blood and testicular tissue, while it decreased CAT, GPx activity and GSH level. GDL treatment provided protection from the impaired oxidant balance (p<0.001). Furthermore, BPA caused decreased epididymal sperm motility and density, vesicular seminalis weight and blood testosterone levels, increased testicular and epididymal tissue weight (p<0.001). Histopathological examination revealed that BPA caused narrowing in testicular tubules and apoptosis, decreased germinal cell thickness and androgen receptor number. It was determined that GDL administration preserved testicular histology. As a result, it was determined that BPA caused toxicity in the testicular tissue of rats, whereas GDL administration was ameliorative.

The outbreak and prevalence of tembusu virus (TMUV) endanger the breeding industry of waterfowls. However, little is known about the molecular mechanism underlying TMUV infection. It was reported that heat shock protein 70 (HSP70) was a positive regulator of the infection of TMUV. In order to study the interactions between HSP70 and host immune response to TMUV infection, TMUV-infected cells with or without HSP70 inhibitor were harvested and subjected to deep sequencing to identify genes differentially expressed. We found 43 differentially expressed genes (DEGs) in HSP70 inhibitor-treated and mock-treated TMUV-infected DF-1 cells. Of these DEGs, 39 genes were down-regulated significantly. Gene Ontology analysis suggested that the DEGs were mainly involved in biological process, cellular component and molecular function. Kyoto Encyclopedia of Genes and Genomes analysis showed that the DEGs mainly related to the activation of innate immune response, including RIG-I-like receptor, toll-like receptor and NF-κB signaling pathway. Also, 12 down-regulated immune-related DEGs were selected for confirmation by reverse transcription quantitative real-time PCR verification, all these genes showed consistent expression between the result of reverse transcription quantitative real-time PCR and transcriptomic sequencing. These results revealed the important role of HSP70 in facilitating the innate immune response induced by TMUV infection. This is first to access the role of HSP70 in host response to TMUV infection, which provides a basis for further study of the pathogenesis of TMUV and contributes to the elucidation of TMUV-host interactions.

In homeostasis, which plays an important role in the proper functioning and maintenance of the internal functioning of the body, kidneys play a key role in being responsible for the proper homeostasis of glucose. Among glucose transporters, sodium-dependent glucose co-transporters (SGLTs) have a major role in the kidney's ability to reabsorb glucose. Although the localization of these transporters has been extensively studied in mammals, there are still gaps in knowledge of the localization of SGLTs in birds of different age groups. The aim of this study was to immunolocalize in kidneys of hen chickens of different ages the sodium-dependent glucose co-transporters SGLT1 and SGLT2, comparing the localization between different age groups. The kidneys derived from 32 hen chickens (Gallus gallus domesticus) were devided equally into four age groups: 3, 7, 14, and 20 day old broilers, 8 indivuals in each group. The polyclonal primary antibodies Rabbit anti- SGLT1 and Rabbit anti-SGLT2 (Abcam, UK) were used together with the corresponding IHC kit (Abcam, UK). The results were visualized photographically using an AxioCam HRc camera (Germany) connected to a Zeiss Axioplan-2 Imaging microscope (Germany). The study revealed similar immunolocalization of SGLT1 and SGLT2 in the apical part of cells of proximal renal tubules in hen chickens' kidneys in all age groups. Strong staining of SGLT2 was noted also in the cytoplasm of epithelial cells of the proximal straight and convoluted tubules. Based on our study, the kidney tissue of newly hatched chickens is ready immediately after hatching for glucose reabsorption and transport, similarily to that of three-week-old chicks.

This study analysed the influence of montelukast (MON), a cysteinyl leukotriene receptor antagonist, and nifedipine, an L-type voltage-gated Ca2+ channel blocker, on the contractility of the porcine uterine smooth muscle. Myometrial strips were collected from the sexually immature (n=8), cyclic (12-14 days of the oestrous cycle; n=8) and pregnant (27-28 days of pregnancy; n=8) gilts and stimulated with a) MON or nifedipine at concentrations of 10-8-10-4 M and b) increasing concentrations of nifedipine after previous administration of MON at a concentration of 10-4 M. The changes in the tension, amplitude and frequency of contractions were determined with the Hugo Sachs Elektronik equipment for measuring isometric contractions. Stimulation of the uterine strips with high concentrations of MON significantly reduced the amplitude of contractions in both the cyclic and pregnant group and the frequency of contractions in the pregnant group. In high concentrations, nifedipine significantly decreased the amplitude and frequency of contractions in all examined groups. Nifedipine administered after MON pre-treatment significantly decreased the tension in the pregnant group and the amplitude and frequency of contractions in all examined groups; this effect was more evident in comparison with nifedipine used alone. The results obtained indicate that the influence of MON and nifedipine on the contractile activity of the porcine uterus is dependent on the physiological status of the animal. Moreover, the blockage of the CysLT1 receptor enhances the relaxing effect of nifedipine.

Bovine endometritis has become a persistent issue in the global dairy business, resulting in huge economic losses. Due to their numerous positive benefits, Chinese herbal medicines (CHMs) have recently demonstrated remarkable pharmacological potential against endometritis. The objective of this study was to investigate the effects and elucidate the underlying mechanisms of the Yimucao formula (YMF) that involves five herbs in lactation cows under endometritis conditions. Initially, the possible impacts of YMF on cows with endometritis were assessed. Then, using network pharmacology, potential molecular processes by which the YMF prevents endometritis were suggested. The findings demonstrated a considerable improvement in endometritis-related clinical complaints following YMF treatment. Mechanically, 150 active compounds were identified from the Traditional Chinese Medicine Systems Pharmacology Database and Analysis Platform (TCMSP); of these, quercetin, kaempferol, beta-sitosterol, apigenin, isorhamnetin, and sitogluside were the most prevalent active substances. The NCBI gene, GeneCard, and OMIM databases had 110 genes linked to endometritis. The intersection of these targets with the 213 active ingredient targets produced 17 common targets, of which BCL2, IL-6, MMP9, HIF1α, TNF, IL-1β, and ICAM1 were the top 7 core targets. According to the Gene Ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) enrichment data, atherosclerosis, fluid shear stress, and the AGE-RAGE signaling pathway are the primary causes of YMF's anti-endometritis action. Finally, our results indicate that the YMF works on endometritis through various and multi-targeted signaling pathways, which provide reference for clinical practice, based on network pharmacology and molecular docking.

Ultrasonographic renal length-to-aorta ratio is an ideal reflection of renal health in dogs. Earlier studies have highlighted the need for breed-specific reference intervals for this parameter. The aim of this study was to establish a breed-specific reference interval of kidney length to aorta ratio (KL:Ao) in Chippiparai dogs, a breed of Indian sighthounds. The KL:Ao ratio was recorded in 45 Chippiparai dogs, classified into 3 age groups. A narrow breed specific range of 7.07 to 7.74 was arrived at for adult Chippiparai dogs, and a strong relationship between age and body weight and KL:Ao was observed using regression analysis. These findings can be extrapolated and utilized by other sighthounds.

Blastocystis is an intestinal protist commonly found in humans and many different animal species. It is probably the most common enteric parasite with an estimated one billion infections worldwide. The fecal materials for this study were collected from 100 cats and 200 dogs of different ages and sexes in shelters in Van, Turkey. DNA extraction, PCR amplification, and sequence analysis were performed on the fecal samples. A prevalence of 1% (1/100) in cats and 1.5% (3/200) in dogs was detected. The prevalence was higher in both cats and dogs in age groups younger than one year and in females. Sequence analysis revealed Blastocystis sp. ST10 in cats and Blastocystis sp. ST1, ST10, and ST30 in dogs. The sequences obtained were deposited in GenBank. In conclusion, stray cats and dogs may be a source of infection for other cats and dogs, and the detection of zoonotic ST1 in dogs suggests that dogs may be a reservoir for human infection.