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Antimicrobial resistance and virulence genes of Streptococcus agalactiae isolated from mastitis milk samples in China النص الكامل
2022
Zhao Yankun | Shao Wei | Wang Fulan | Ma Jiaoxiao | Chen He | Wang Shuai | Wu Yating | Wang Cheng | Zheng Nan | Wang Jiaqi | Liu Huimin
Streptococcus agalactiae is an important zoonotic pathogen that affects milk production and quality and poses a threat to public health. Treatment of infections with this bacterium exploits antimicrobials, to which the resistance of S. agalactiae is a growing problem. Addressing the possibility of a correlation between this pathogen’s genetic factors for antimicrobial resistance and virulence, this study attempted to identify the relevant genes.
اظهر المزيد [+] اقل [-]First report of the presence of enterotoxin gene in coagulase-negative staphylococci recovered from meat of snails (Achatina achatina) النص الكامل
2022
Okafor Arthur C. | Ogbo Frank C. | Akharaiyi Fred C. | Oladeinde Henry B.
First report of the presence of enterotoxin gene in coagulase-negative staphylococci recovered from meat of snails (Achatina achatina) النص الكامل
2022
Okafor Arthur C. | Ogbo Frank C. | Akharaiyi Fred C. | Oladeinde Henry B.
It has been suggested that coagulase-negative staphylococci can serve as reservoirs of virulence genes for other bacteria. This study assessed the presence of such genes in selected isolates recovered from meat of the giant African snail (Achatina achatina).
اظهر المزيد [+] اقل [-]First report of the presence of enterotoxin gene in coagulase-negative staphylococci recovered from meat of snails (Achatina achatina) النص الكامل
2022
Okafor, Arthur C. | Ogbo, Frank C. | Akharaiyi, Fred C. | Oladeinde, Henry B.
It has been suggested that coagulase-negative staphylococci can serve as reservoirs of virulence genes for other bacteria. This study assessed the presence of such genes in selected isolates recovered from meat of the giant African snail (Achatina achatina). Virulence genes were detected using a polymerase chain reaction targeting specific primers. Two representative isolates were identified using 16S rRNA gene sequencing. The results showed that the staphylococcal enterotoxin A gene (sea) was present in five out of the eight isolates studied. The isolates expressed resistance mainly to three antibiotics: chloramphenicol, norfloxacin and cloxacillin in descending order of incidence. Most importantly, the Staphylococcus sciuri isolate NEDU 181, in addition to being resistant to the three aforementioned antibiotics, also harboured the sea gene. Our findings demonstrate, for the first time, the presence of toxigenic and antibiotic-resistant coagulase-negative Staphylococcus spp. in commercially-available fresh snail meat. With staphylococcal enterotoxin A known to survive cooking temperature, this presents a food safety concern.
اظهر المزيد [+] اقل [-]Highly pathogenic avian influenza H5Nx in Poland in 2020/2021: a descriptive epidemiological study of a large-scale epidemic النص الكامل
2022
Śmietanka Krzysztof | Świętoń Edyta | Wyrostek Krzysztof | Kozak Edyta | Tarasiuk Karolina | Styś-Fijoł Natalia | Dziadek Kamila | Niemczuk Krzysztof
Highly pathogenic avian influenza H5Nx in Poland in 2020/2021: a descriptive epidemiological study of a large-scale epidemic النص الكامل
2022
Śmietanka Krzysztof | Świętoń Edyta | Wyrostek Krzysztof | Kozak Edyta | Tarasiuk Karolina | Styś-Fijoł Natalia | Dziadek Kamila | Niemczuk Krzysztof
Highly pathogenic avian influenza (HPAI) outbreaks caused by the Gs/Gd lineage of H5Nx viruses occur in Poland with increased frequency. The article provides an update on the HPAI situation in the 2020/2021 season and studies the possible factors that caused the exceptionally fast spread of the virus.
اظهر المزيد [+] اقل [-]Highly pathogenic avian influenza H5Nx in Poland in 2020/2021: a descriptive epidemiological study of a large-scale epidemic النص الكامل
2022
Śmietanka, Krzysztof | Świętoń, Edyta | Wyrostek, Krzysztof | Kozak, Edyta | Tarasiuk, Karolina | Styś-Fijoł, Natalia | Dziadek, Kamila | Niemczuk, Krzysztof
Highly pathogenic avian influenza (HPAI) outbreaks caused by the Gs/Gd lineage of H5Nx viruses occur in Poland with increased frequency. The article provides an update on the HPAI situation in the 2020/2021 season and studies the possible factors that caused the exceptionally fast spread of the virus. Samples from poultry and wild birds delivered for HPAI diagnosis were tested by real-time RT-PCR and a representative number of detected viruses were submitted for partial or full-genome characterisation. Information yielded by veterinary inspection was used for descriptive analysis of the epidemiological situation. The scale of the epidemic in the 2020/2021 season was unprecedented in terms of duration (November 2020–August 2021), number of outbreaks in poultry (n = 357), wild bird events (n = 92) and total number of affected domestic birds (approximately ~14 million). The major drivers of the virus spread were the harsh winter conditions in February 2020 followed by the introduction of the virus to high-density poultry areas in March 2021. All tested viruses belonged to H5 clade 2.3.4.4b with significant intra-clade diversity and in some cases clearly distinguished clusters. The HPAI epidemic in 2020/2021 in Poland struck with unprecedented force. The conventional control measures may have limited effectiveness to break the transmission chain in areas with high concentrations of poultry.
اظهر المزيد [+] اقل [-]Dirofilaria repens in dogs and humans in Slovenia النص الكامل
2022
Kotnik Tina | Rataj Aleksandra Vergles | Šoba Barbara
Dirofilaria repens in dogs and humans in Slovenia النص الكامل
2022
Kotnik Tina | Rataj Aleksandra Vergles | Šoba Barbara
The prevalence of Dirofilaria repens in dogs in countries bordering Slovenia ranges from 1.5% to 47.3%. The aim of this study was to estimate its prevalence in Slovenian dogs and to present the cases of dirofilariasis diagnosed in humans from 2010 to 2020.
اظهر المزيد [+] اقل [-]Dirofilaria repens in dogs and humans in Slovenia النص الكامل
2022
Kotnik, Tina | Rataj, Aleksandra Vergles | Šoba, Barbara
The prevalence of Dirofilaria repens in dogs in countries bordering Slovenia ranges from 1.5% to 47.3%. The aim of this study was to estimate its prevalence in Slovenian dogs and to present the cases of dirofilariasis diagnosed in humans from 2010 to 2020. Epidemiological data were collected and blood samples were taken from 465 dogs older than one year and born in Slovenia. A real-time PCR was performed on all samples to detect filarioid DNA, and a D. repens-and D. immitis-specific real-time PCR was performed on positive samples. Blood samples from 446 dogs were tested for Dirofilaria spp. using a modified Knott’s test. Human cases were diagnosed from histological sections of excised subcutaneous nodules. Descriptive statistics were used to characterise the samples. The one-sample nonparametric chi-squared test was used to assess whether categories of a variable were equally distributed. Three dogs’ samples tested positive for D. repens using the species-specific real-time PCR, while D. immitis DNA was not detected. The modified Knott’s test was positive in two of the three PCR-positive dogs, two of which had never travelled outside Slovenia’s borders. Four human patients with D. repens dirofilariasis were diagnosed. Since their travel history was unknown, autochthonous transmission could not be confirmed. Our study demonstrated a 0.64% prevalence of D. repens infection in dogs in Slovenia. Two cases could be autochthonous.
اظهر المزيد [+] اقل [-]Occurrence of Ornithobacterium rhinotracheale in Polish turkey flocks النص الكامل
2022
Kursa Olimpia | Tomczyk Grzegorz | Sawicka-Durkalec Anna
Occurrence of Ornithobacterium rhinotracheale in Polish turkey flocks النص الكامل
2022
Kursa Olimpia | Tomczyk Grzegorz | Sawicka-Durkalec Anna
Ornithobacterium rhinotracheale (ORT) causes significant economic losses to the poultry industry around the world. The bacterium often affects poultry as part of multiple infections causing very serious clinical signs that are usually not limited only to the respiratory system. This study’s main objective was the retrospective detection and identification of ORT in turkey flocks.
اظهر المزيد [+] اقل [-]Occurrence of Ornithobacterium rhinotracheale in Polish turkey flocks النص الكامل
2022
Kursa, Olimpia | Tomczyk, Grzegorz | Sawicka-Durkalec, Anna
Ornithobacterium rhinotracheale (ORT) causes significant economic losses to the poultry industry around the world. The bacterium often affects poultry as part of multiple infections causing very serious clinical signs that are usually not limited only to the respiratory system. This study’s main objective was the retrospective detection and identification of ORT in turkey flocks. ORT identification was performed in 6,225 samples taken from 133 different flocks between 2015 and 2020. Molecular methods were used, specifically real-time PCR and traditional PCR. We focused on partial 16S rRNA gene sequences of isolates, which were compared with sequences obtained from GenBank. The reaction products were analysed phylogenetically. Molecular methods indicating secondary infections was carried out, and the bacterial composition of the upper respiratory tract was 16S metasequenced for selected flocks to identify any other pathogens. The presence of ORT was detected in 30.83% of samples by real-time PCR and 28.57% by PCR. Phylogenetic analysis of the PCR products from the turkeys samples showed that their sequences resolved into two main genetic groups. Tests for the occurrence of secondary infections showed the presence of Mycoplasma gallisepticum and M. synoviae in some samples but the total absence of Bordetella avium. The upper respiratory tract in turkeys was dominated by two major phyla Firmicutes and Proteobacteria. At the genus level, the genera Ornithobacterium, Mycoplasma, Gallibacterium, Avibacterium, and Escherichia-Shigella were found which may include pathogenic bacteria that can cause clinical symptoms. The results of the analysis of multiple infection carried out in flocks with respiratory signs are probably associated with outbreaks of ornithobacteriosis in turkey flocks in Poland.
اظهر المزيد [+] اقل [-]Comparison of Vaginal Flora, Vaginal Cytology, Blood Values and Hormone Level of Cats in Different Reproductive Periods النص الكامل
2022
Termelioğlu, Levent | Kalender, Hakan | Erat, Serkan
The aim of this study was to investigate vaginal cytology, haematological and hormonal values, the presence of bacteria in the vagina, and the relationship between these findings in different reproductive periods in cats. The study consisted of 30 healthy non-geriatric female cats that had reachedto puberty. The cats were divided into 3 equal groups (each having 10 cats) as estrus, anestrus and pregnant. The vaginal samples for microbiological and cytological examination andthe blood samples for hormonal analysis and hemogram were taken at the same time. A total of 100 vaginal epithelial cells were counted from the random areas of thevaginal cytology samples on the slide. The distributions of the percentages of the counted cells according to the groups were subtracted and compared. While there was no bacterial growth in 9 (30%) animals, bacterial growth was observed in 21 (70%) animals. There were no bacterial growth in 3 (30%), 4 (40%) and 2 (20%) animals inestrus, pregnant and anestrus groups, respectively. Estradiol (E2) level (42.64 ± 10.62 pg/ml) in estrus animals was significantly higher (P<0.001) than E2 level in pregnant and an estrus animals. The progesterone (P4) level of the pregnant group (12.22±9.35 ng/ml) was higher (P<0.001) than the P4 levels of the anestrus (0.84±0.25 ng/ml) and the estrus group (0.58±0.28 ng/ml), while the P4 levels of the estrus and the anestrus groups were similar. Significant differences were detected only in MCV, MCH and MCHC, within 19 blood parameters. MCV values were found to be lower in estrus animals (45.68±3.75femtoliter) than only in pregnant (51.21±4.99femtoliter) animals (P=0.007). The difference in MCH values between the estrus group (14.37±0.84 pg) and the pregnant group (15.62 ± 1.18 pg) (P=0.003) and the difference in MCHC values between the pregnant group (30.66±1.17 g/dl) and the anestrus group (32.42±1.04 g/dl) (P<0.001) were statistically significant. The presented results may help in the planning of future studies and the comparison of the obtained values.
اظهر المزيد [+] اقل [-]Questionnaire Study on Feeding Practices of Pace Horses in Aegean and Marmara Regions of Turkey النص الكامل
2022
Danyer, Erdem | Bilal, Tanay
This sectional study aims to collect data about feeding practices for pace horses in the Aegean and Marmara regions of Turkey. For this purpose, a questionnaire consisting of 69 free text and multiple-choice questions was developed. The questionnaire was implemented on 29-31 August 2014 by personal interviews and was online on social media for ten months. The questionnaire comprised sections on breeder demographic information, farm condition, feeding habit, and nutritional disease. Fifty volunteer horse owners who had a total of 271 horses have participated in the study. Evaluation of the results focused on nutrition practices. Unfortunately, 46% of the respondents were not rasping their horses’ teeth, and an important part of them was not using supplementary oil (78%) or feed additives (84%). Drinking water after exercise (74%) as well as rotten, mouldy, and bacterially contaminated feed (72%) were reported as the most important colic reason by the responders. Based on the results of our study, educational initiatives are needed to inform pace horse owners about appropriate nutrition and related diseases to increase the pace horse race performance.
اظهر المزيد [+] اقل [-]Social Network Analysis of Giardiasis Positive Calves to those of Healthy One النص الكامل
2022
Alıç Ural, Deniz | Ural, Kerem | Erdogan, Songul | Ayan, Adnan | Erdoğan, Hasan
In the present multidisciplinary study, the researchers on a field trial performed a Social Network approach and a group of 9 calves (3 males/6 females) aged 10 to 16 weeks. A 24 hours digital camera was used for location registration (X-Y position) and interactions on each calf, both individually and collectively. Based on the simple methodology nearest neighbor matrix positive and negative associations were analyzed. The field study lasted 4 weeks and the maximum interaction day was chosen, when individual calf activity was high. To those of 9 calves solely no 2 was infected with giardiasis on the first week, whereas calves with no:2, 7, and 8 were also infected on the second week. No: 4 and 6 were also infected with a total of 5 calves on the third week. This was followed by the final 6 calves in total infected. During the observation period, both by investigators and camera records, infected calf 2 was in close contact with no: 8 (at morning observation) and a slight degree of contact with no: 3 and 4 which were detected with giardiasis on the third and fourt weeks, respectively. Due to close contact with no: 8, infection was determined on the second week, earlier than others (except no: 7). Calves with no: 1 and 5 were never infected nor determined by PCR, fecal smear, or rapid diagnostic test kits throughout the study. In conclusion, the present authors suggested that social networking might be an important predisposing factor for giardiasis infection among calves.
اظهر المزيد [+] اقل [-]Investigation of Physical Properties and Mineral Contents of Drinking Water in Some Villages of Van and Mardin Provinces النص الكامل
2022
Baraj, Merve Gizem | Mert, Nihat | Mert, Handan | Günbatar, Nizamettin
This study was carried out in order to examine a total of 40 drinking water samples taken from 20 locations selected from Mardin and Van provinces in terms of physical properties, heavy metal and mineral contents and to evaluate the quality of drinking water in accordance with the results obtained. Among the ion and mineral analyses of the samples, arsenic, copper, boron, cadmium, cobalt, manganese, nickel, lead, selenium and zinc analyses were made with Inductively Coupled Plasma and Mass Spectrometer, and magnesium analyses were made with Inductively Coupled Plasma-Optical Emission Spectrometer. Fluoride, chloride, nitrite, nitrate, bromide, sulfate and phosphate analyses were also performed by Dionex ion chromatography. Conductivity, pH, ORP, TDS and minimum salt analyses were performed with the Myron L device. As a result of the study, the difference between the fluoride, chloride, nitrite, nitrate, bromide, boron, cadmium, cobalt, zinc, conductivity, TDS, ORP and temperature values of the water samples of the two provinces was found to be significant. In addition, drinking water containing heavy metals was found to be above the limit values set by the Regulation on Water Intended for Human Consumption, nickel was detected in water samples taken from Van, and phosphate was not detected in samples taken from Mardin. The remarkable issues in water samples taken from 40 different locations in two provinces are presented in articles and it has been emphasized that it is important for the people living in this region to present the detected defects to local governments, environmental and public health units and to eliminate the defects.
اظهر المزيد [+] اقل [-]A New Era Under Soil Based Probiotics for Anti-Pruritic Combat Among Cats with Feline Atopic Skin Syndrome النص الكامل
2022
Ural, Kerem | Erdogan, Hasan | Erdogan, Songul
Present research was conducted at the University of Aydin Adnan Menderes, Faculty of Veterinary. In a total of 10 cats with pruritic dermatoses were allocated, classified [Feline atopic skin syndrome (FaSs)] and adapted to the retrospective case controlled study on the basis of Polycheck in vitro Allergy Test, clinical signs, dermatoscopic and cytological examination. No prior drug prescription, nor immunosuppressive treatment were evident, which was an inclusion criteria. Complete blood count, serum biochemistry, and endocrine panels were all deemed available on days 0 and 21 for all cats involved. The Feline Dermatitis Extent and Severity Index (FeDESI) and a 10 cm visual analog scale (VAS) were deemed available as relevant prognostic parameters. A three strain invoving soil-based probiotic used via rectal route significantly decreased FEDESI and VAS pruritus scores after 10 days of rectal use. Pre-treament day 0 FEDESI scores (median ± SD) (106.3 ± 41.38), were significantly higher than scores on day 10 (15.3 ± 10.53) switching the severity of the disease to mild status in all cases. Furthermore, day 0 VAS pruritus scores were 7.4 ± 1.78 (mean ± SD) (prior to treatment), whereas owner VAS pruritus score was decreased to 1.3 ± 1.06 (mean ± SD) significantly (p=0.005). It should not be unwise to draw preliminary conclusion that 3 chained soil-based Bacillus probiotic was capable of short term cure for FaSs. Bacillus probiotics with safety usage should be added to therapeutical armamentarium of FaSs.
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