细化搜索
结果 581-590 的 832
Diagnostic imaging features of traumatic subgaleal hematoma in a dog: a case report 全文
2024
Kim, J.Y. | Han, C.H. | Lee, Y.W. | Choi, H.J.
Subgaleal hematomas are accumulation of blood between periosteum and galea aponeurosis. A 2-year-old male Chihuahua was presented with a severe head swelling after trauma. Radiography and computed tomography (CT) showed a massive swelling encircling the entire calvarial vault, extending toward the cervical neck and crossing the suture line. It was heterogeneously, mild hyperdense fluid to soft tissue attenuating with contrast enhancement on CT images. On day 4, physical and imaging examination showed resolution of the calvarial swelling. Subgaleal hematoma should be considered as a differential diagnosis when there is a massive soft tissue swelling over the skull on physical and imaging examinations.
显示更多 [+] 显示较少 [-]Thermostability study of virulent Newcastle disease viruses isolated in Southern Angola 全文
2024
António Neto | Ana M. Henriques | Teresa Fagulha | Miguel Fevereiro
Newcastle disease (ND) is endemic in Angola. Several outbreaks of ND occurred in small backyard flocks and village chickens with high mortality in the southern provinces of the country, Cunene, Namibe and Huíla, in 2016 and 2018. In those years, 15 virulent ND virus (NDV) strains were isolated and grouped within subgenotype 2 of genotype VII (subgenotype VII.2). We now present a study on the thermostability of the isolates, aiming at the selection of the most thermostable strains that, after being genetically modified to reduce their virulence, can be adapted to the production of vaccines less dependent on cold chain and more adequate to protect native chickens against ND. Heat-inactivation kinetics of haemagglutinin (Ha) activity and infectivity (I) of the isolates were determined by incubating aliquots of virus at 56 °C for different time intervals. The two isolates from Namibe province showed a decrease in infectivity of 2 log10 in ≤ 10 min, therefore belonging to the I-phenotype, but while the NB1 isolate from 2016 maintained the Ha activity up to 30 min and was classified as thermostable virus (I−Ha+), the Ha activity of the 2018 NB2 isolate decreased by 2 log2 in 30 min, being classified as a thermolabile virus (I−Ha−). Of the 13 NDV isolates from Huíla province, 10 isolates were classified as thermostable, eight with phenotype I+Ha+ and 2 with phenotype I−Ha+. The other three isolates from this province were classified as thermolabile viruses (I−Ha−). Contribution: This study will contribute to the control and/or eradication of Newcastle disease virus in Angola. The thermostable viral strains isolated from chickens in the country can be genetically manipulated by reverse genetic technology in order to reduce their virulence and use them as a vaccine in the remote areas of Angola.
显示更多 [+] 显示较少 [-]Erratum: Ascofuranone antibiotic is a promising trypanocidal drug for nagana 全文
2024
Keisuke Suganuma | Kennedy M. Mochabo | Judith K. Chemuliti | Kiyoshi Kita | Noboru Inoue | Shin-ichiro Kawazu
No abstract available.
显示更多 [+] 显示较少 [-]Rabies in equids in Sudan 全文
2024
Yahia H. Ali | Tenzeil A.G. Mohieddeen | Muaz M. Abdellatif | Baraa Mohammed Ahmed | Intisar K. Saeed | Husham M. Attaalfadeel | Amani A. Ali
Rabies is endemic in Sudan with continuing outbreaks occurring annually, the most common animals affected are dogs, followed by goats and equids. This work focused on equid rabies, to elucidate the current situation of the disease through analysis of reports of equid rabies outbreaks in Sudan during 2010–2022 supported by laboratory confirmation of the disease. During the study period, 66 animals were affected during 35 equid rabies outbreaks. The highest incidences were found in Al Gezira (30.3%), followed by Darfur (24.2%) and Kordofan (15.2%). The highest incidence rate was observed during 2018 (33.3%), followed by 2015 (16.7%). Within seasons, the highest incidence rate was reported during October – December (33.3%), followed by July – September (30.3%). Chi-square analysis revealed a significant correlation between rabid animals and year, season, and state. Wald statistics demonstrated that year and season had a significant association with the disease. Virus antigen was identified (72.2%) in brain tissues using the fluorescent antibody test. Viral nucleic acid was amplified (n = 6) with a reverse transcriptase polymerase chain reaction assay. Contribution: As equids are kept in close contact with humans and other animals in the country, according to the present investigation, equid rabies in Sudan is a potential public health concern, emphasising the importance of implementing effective control measures.
显示更多 [+] 显示较少 [-]Applied One Health: Nigeria National Veterinary Research Institute COVID-19 pandemic response 全文
2024
Clement A. Meseko | Ismaila Shittu | Olayinka O. Asala | Adeyinka J. Adedeji | Tinuke A. Laleye | Ebere R. Agusi | Dorcas A. Gado | Kayode A. Olawuyi | Nicodemus Mkpuma | Chinyere Chinonyerem | Bitrus Inuwa | Nneka Chima | Ruth Akintola | Patrick Nyango | Hellen Luka | Judith Bakam | Rebecca Atai | Dennis Kabantiyok | Mark Samson | ThankGod Daniel | Joshua Oyetunde | Olajide A. Owolodun | David D. Lazarus | Emmanuel T. Obishakin | Pam D. Luka | Benshak J. Audu | Sunday Makama | Hussaini G. Ularamu | Yiltawe S. Wungak | James S. Ahmed | Reuben A. Ocholi | Maryam Muhammad
The COVID-19 pandemic has caused the death of 7.1 million people worldwide as of 7 July 2024. In Nigeria, the first confirmed case was reported on 27 February 2020, subsequently followed by a nationwide spread of SARS-CoV-2 with morbidity and mortality reaching 267 173 and 3155, respectively, as of 7 July 2024. At the beginning of the pandemic, only a few public health laboratories in Nigeria had the capacity for SARS-CoV-2 molecular diagnosis. The National Veterinary Research Institute (NVRI), already experienced in influenza diagnosis, responded to the public health challenge for the diagnosis of COVID-19 samples from humans. The feat was possible through the collective utilisation of NVRI human and material resources, including biosafety facilities, equipment, reagents and consumables donated by international partners and collaborators. Within 6 months of the reported COVID-19 outbreak in Nigeria, over 33 000 samples were processed in NVRI facilities covering five states. Thereafter, many field and laboratory projects were jointly implemented between NVRI and collaborating sectors including the Nigerian Centre for Disease Control (NCDC) and the National Institute for Medical Research (NIMR), which brought together professionals in the health, veterinary, education and socio-sciences. In addition, One Health grants were secured to enhance surveillance for coronavirus and other zoonoses and build capacity in genomics. Bio-surveillance for coronaviruses and other emerging zoonotic pathogens at the human–animal interface was activated and continued with sample collection and analysis in the laboratory for coronaviruses, Lassa fever virus and Mpox. One Health approach has shown that inter-sectoral and multinational collaboration for diagnosis, research and development in animals, and the environment to better understand pathogen spillover events at the human–animal interface is an important global health priority and pandemic preparedness.
显示更多 [+] 显示较少 [-]Taenia saginata prevalence in cattle slaughtered at low throughput abattoirs in South Africa 全文
2024
Mbali P. Dube | Charles Byaruhanga | Pierre Dorny | Veronique Dermauw | Daniel N. Qekwana
Taenia saginata prevalence in cattle slaughtered at low throughput abattoirs in South Africa 全文
2024
Mbali P. Dube | Charles Byaruhanga | Pierre Dorny | Veronique Dermauw | Daniel N. Qekwana
Meat inspection is the routine method used to identify cattle infected with Taenia saginata; however, the sensitivity of this method is low. We investigated the prevalence of T. saginata infection in cattle slaughtered in low throughput abattoirs (LTs) in Gauteng province, South Africa, based on meat inspection and serology. A total of 188 cattle carcasses from three abattoirs underwent meat inspection for the presence of T. saginata cysticerci, while serum was tested for the occurrence of antigens using antigen enzyme-linked immunosorbent assay (Ag-ELISA). Polymerase chain reaction (PCR)-sequencing was performed to confirm T. saginata cysts identified during enhanced inspection and incision of 10 randomly selected hearts. Apparent and true prevalence were calculated, and a logistic regression model was fit to evaluate associations between abattoir, sex, animal origin, age and T. saginata serological status. Out of the 188 carcasses, no positive cases (0%) were identified during routine meat inspection, yet three cysticerci-like lesions were identified from three hearts following additional incisions, of which one was confirmed as T. saginata. Fifty-four of the sampled cattle carcasses tested positive using Ag-ELISA (apparent and true prevalence: 29.0%, 71.8%). Feedlot cattle were less likely (odds ratios [OR]: 0.33, p = 0.043) to have a positive serological test result for T. saginata compared to non-feedlot cattle, and the odds of a positive result differed between abattoirs (p 0.05). Contribution: Our results confirmed the low sensitivity of routine meat inspection in LTs, which may pose a public health risk, and therefore other diagnostic methods need to be included in the surveillance system for T. saginata.
显示更多 [+] 显示较少 [-]Sodium Nitrite Effects on Some Blood and Biochemical Parameters in Glutathione Treated Male Rats 全文
2024
Huda Khassaf
In industrial food production, food preservatives like sodium nitrite are used more frequently. The use of some food preservatives has been linked to teratogenic and carcinogenic effects. In order to investigate the effects of food additives such as sorbitol and natural antioxidant substances on rats forty adult male albino rats, approximately one month and a half were divided into four groups as follows, Group 1 serves as control group supplement with (Nacl 0.9% normal saline).Group 2 received a sodium nitrite supplement (30 mg/kg BW), group 3 supplemented initially with sodium nitrite and glutathione and group 4 supplemented with glutathione (6.42 mg/kg BW). A variety of parameters were measured, including the number of red and white blood cells (RBCs & WBCs), hemoglobin (Hb) level, hematocrit (Hct) value, glucose level, and serum alanine transaminase and aspartate transaminase (ALT & AST) activity analysis. The results clearly showed that (RBCs), (Hb) concentration, and (Hct) value of rats treated with sodium nitrite for two months exhibit significant decrease when compared to the control and treated groups, rats given with either glutathione alone or glutathione plus sodium nitrite showed significant decrease in their serum glucose levels and there was discernible elevation in the serum activity of AST and ALT in rats treated with glutathione alone. Rats treated with sodium nitrite showed a substantial decrease (P< 0.05) in AST activity after 2months when compared with the control group, whereas significant increase (P< 0.05) in ALT activity were detected after 2months . These results indicate the harmful effects of using artificial supplements and colorings and also prove the improving effect of glutathione. Due to the potentially harmful effects of food additives, it is advised that the use of S. N. as an additive be kept to a minimum. Gluathione, on the other hand, can prevent toxic effects.
显示更多 [+] 显示较少 [-]Histochemical Effect of Capsaicin Alone or in Combination with The Metformin on Ovaries Structure After Induced a Polycystic Ovary Syndrome by Letrozole in Rats 全文
2024
Alia Mohammed Khudier, Karim H. Al-derawi, Labeed A. Al- saad
The current study, we investigated the effect of capsaicin alone or combined with metformin on induced polycystic ovary syndrome in rat adult females. The total number of animals was used (70). The study was divided into two experiments: The first experiment was to induce polycystic ovary syndrome in (50) animals were divided as follows: GI (n= 10) (CMC) served as a control group. The reminder (n = 40) GII were given Letrozole 1 mg\kg. The duration of this experiment continued (21 day). At the end of experiment, (n=10) females that received letrozole were scarified and considered as (PCOS subgroup). The GI (n=10) CMC were also scarified to ensured PCOS accrued. For histochemical analysis, the ovaries of female rats were isolated and fixed in a formalin solution 10%. In a second experiment, the reminder of female rats from first experiments GII (PCOS group n=30) divided into three subgroups (10 animals/subgroup: (Capsaicin + letrozole) subgroup, was given 0.5 mg/kg of capsaicin, (metformin) subgroup was given metformin 9 mg\ kg and (metformin + capsaicin + letrozole) subgroup. The remainder of the total number of animals studied (n = 20) (PCOS not induced) were divided into (10 animals/subgroup) (alcohol subgroup) as control group that was given 0.5 ml from alcohol and (capsaicin) without induction of polycystic ovary syndrome as a positive control subgroup, was given capsaicin (0.5 mg/ kg). The second experiment continued for 21-days after the end of the experiment. All animals were sacrificed and the ovaries were removed, fixed (10% buffered formalin), and prepared for histochemical study using Mallory's trichrome stain. The study, we recorded multiple cysts, bleeding and mucin in the PCOS subgroup compared with the CMC group. Histochemical examinations of the treated subgroups with capsaicin alone or with metformin showed an improvement in ovarian tissue, disappearance of cysts and bleeding compared with the control groups and the PCOS subgroup. We thought that capsaicin alone or in combination with metformin showed an improvement in ovarian tissue.
显示更多 [+] 显示较少 [-]Comparative Serological Evaluation of The Maternal and Acquired Immunity of Newcastle Disease In chickens 全文
2024
M. Taher Abdulrazaq Abdulrasol, Waleed Majeed Seger, Isam A. Khaleefah
Infectious avian, including Newcastle disease (ND), are a major concern in poultry husbandry. The primary method of preventing viral infections is immunization by vaccines to produce neutralizing antibodies. In the first ten days of life, chicks are protected by maternally derived antibodies (MDA). This study aimed to; evaluate and reveal the strength and importance of maternal immunity against ND in the bird’s life and to compare it with the acquired immunity by measurement of antibody titers with Elisa test. Total number of 150-day-old broiler chicks (Ross 308) with a history of vaccination of parent against ND, were reared to achieve the study, serum samples were also taken from vaccinated layers with ND to complete the current study. Commercial Elisa kit was used to determine the titers of antibodies against NDV in broilers and layers. The results showed that the chicks have high levels of maternal antibodies at day old with an average titer of 1287. The levels of maternal antibodies declined over time, and by day 31, the average titer was 90.8 in the unvaccinated group. The vaccinated group had higher levels of antibodies on day 31 (21 days after vaccination), with an average titer of 370.4. However, MDA levels on the first day of life were still higher than the levels of acquired antibodies because MDA interfered with the development of acquired immunity after vaccination. This study concluded that maternal immunity is important for providing early protection against ND, and recommended that the chicks must be tested to measure the antibody levels before vaccination to avoid interference between MDA and acquired antibodies.
显示更多 [+] 显示较少 [-]Molecular Detection of Fasciola gigantica Using a Conventional PCR Assay in Basrah Province 全文
2024
Fatima Zahra Aqeel Hassan | Suzan Al-Azizz
Fascioliasis represents an ignored zoonotic disease that results from liver flukes that belong to the genus Fasciola spp. It results in substantial financial damages in the cattle sector.In the current investigation, liver flukes were taken from cattle in two places: the Basrah abattoir and the Aljazeera region. The flukes were found on a buffalo and a cow. The nuclear marker genes were used to identify the species and learn about the past of Fasciola spp. spread.From a total number of examined Buffalo (11) and Cow ( 11), the infected with Fasciola spp. were in Buffalo (2) and in Cow (9), and the percentage of infection was 18% and 81%, respectively.The PCR results showed that all examined samples by PCR were found as gigantic Fasciola, with an identity of 100% according to GenBank. In our current study, we isolated Fasciola spp. Two worms from sheep and PCR were done, and it was observed that it is F. gigantica. This indicates that the distribution of the parasite is emerging from the host specificity, which means it must be molecularly done in detail studies in all types of cattle, not only in Basrah city but all over Iraq.
显示更多 [+] 显示较少 [-]