Journal of Veterinary Science最新文献

{"title":"Pharmacokinetics and oral bioavailability of ampicillin and its prodrug bacampicillin in chickens and turkeys.","authors":"Kerem Guzelaydin, Yigit Gunes, Ceren Anlas, Murat Yildirim","doi":"10.4142/jvs.24268","DOIUrl":"10.4142/jvs.24268","url":null,"abstract":"<p><strong>Importance: </strong>Reports comparing the pharmacokinetics of ampicillin (AMP) and its prodrug bacampicillin (BAC) in poultry are scarce.</p><p><strong>Objective: </strong>This study evaluated the pharmacokinetic characteristics of AMP and BAC in chickens and turkeys after intravenous (i.v.) or oral administrations at a single dosage of 25 mg/kg body weight.</p><p><strong>Methods: </strong>Thirty chickens and 30 turkeys were divided into three groups (n = 10). Blood samples (0.5-0.7 mL) were collected from the subcutenea ulnar vein at pre-assigned times up to 12 h. The AMP and BAC plasma concentrations were analyzed using high-performance liquid chromatography with a fluorescence detector. The data were analyzed using noncompartmental methods.</p><p><strong>Results: </strong>The area under the curve from 0 to 12 h, apparent total systemic, the apparent volume of distribution, and mean residence time differed significantly according to the administration routes. The terminal elimination half-life values for the i.v. AMP, oral AMP, and oral BAC routes were 1.81, 3.64, and 5.39 h (<i>p</i> = 0.0249, <i>p</i> < 0.05), respectively, in chickens, and 2.44, 2.53, and 5.5 h (<i>p</i> < 0.0001), respectively, in turkeys. The bioavailability for the oral AMP and oral BAC groups in chickens was 25.9% and 44.6%, respectively. Similarly, in turkeys, the bioavailability was 19.1% and 44.2% for the oral AMP and oral BAC groups, respectively.</p><p><strong>Conclusions and relevance: </strong>The oral route of BAC with good bioavailability can be preferred for treating various conditions. On the other hand, further studies will be needed to determine the clinical efficacy of BAC during bacterial infections and the pharmacokinetics and safety of repeated administration in poultry.</p>","PeriodicalId":17557,"journal":{"name":"Journal of Veterinary Science","volume":"26 2","pages":"e21"},"PeriodicalIF":1.5,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11972936/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143780423","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Characteristics of canine thelaziasis in the Republic of Korea: a retrospective study (2022-2024).","authors":"Eunjik Kim, Ye-In Oh, Youngwoo Park","doi":"10.4142/jvs.25004","DOIUrl":"10.4142/jvs.25004","url":null,"abstract":"<p><strong>Importance: </strong>Previous reports on thelaziasis from the Republic of Korea focused on parasite identification and zoonotic infections in humans. This retrospective study aimed to characterize the clinical patterns of thelaziasis in pet dogs.</p><p><strong>Objective: </strong>To describe the characteristics of canine ocular thelaziasis in small animal clinical settings in the Republic of Korea.</p><p><strong>Methods: </strong>Medical records of 35 dogs (44 eyes), diagnosed with thelaziasis at Dr. Park's Animal Eye Clinic between March 2022 and February 2024, were retrospectively reviewed.</p><p><strong>Results: </strong>Nine dogs had bilateral infections, while 26 had unilateral infections. Most cases (71.4%) were referred to by local clinics, but only 16% had been initially diagnosed with thelaziasis. Common clinical signs included conjunctivitis (25.7%), ocular discomfort (17.1%), corneal ulcers (14.3%), and parasite observation (14.3%). No breed, sex, or age predisposition was noted. Thelaziasis was more prevalent in fall (54.3%) and winter (28.6%), with fewer cases in spring (11.4%) and summer (5.7%). Dogs with thelaziasis had a higher incidence of follicular conjunctivitis of the third eyelid (42.9%) compared to non-infected dogs (9.7%). All affected dogs recovered well after manual parasite removal, followed by anti-inflammatory or antibiotic eye drops as needed.</p><p><strong>Conclusions and relevance: </strong>Canine thelaziasis showed seasonal prevalence, peaking in fall and winter, and was linked to an increased risk of follicular conjunctivitis of the third eyelid. Veterinarians should consider thelaziasis in cases of recurrent ocular surface disease, especially in these seasons.</p>","PeriodicalId":17557,"journal":{"name":"Journal of Veterinary Science","volume":"26 2","pages":"e28"},"PeriodicalIF":1.5,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11972939/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143780404","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Molecular characterization of uropathogenic <i>Escherichia coli</i> (UPEC) strains isolated from companion dogs and cats in Korea.","authors":"Jae Young Oh, Hee Myung Park","doi":"10.4142/jvs.24244","DOIUrl":"10.4142/jvs.24244","url":null,"abstract":"<p><strong>Importance: </strong>Urinary tract infections (UTIs) are common and significant health issues in pets. Although extensive international research exists on their prevention and treatment, a notable gap remains in analyzing the characteristics of the causative bacteria.</p><p><strong>Objective: </strong>To investigate the phylogroup, antimicrobial resistance (AMR), and molecular genotype of <i>Escherichia coli</i> isolates from dogs and cats with UTIs in animal clinics in Korea.</p><p><strong>Methods: </strong>Uropathogenic <i>E. coli</i> (UPEC) strains were analyzed for phylogenetic grouping polymerase chain reaction, AMR, transferable resistance plasmids, and multilocus sequence typing.</p><p><strong>Results: </strong>Sixty-seven UPECs were isolated from urine samples of dogs (n = 57) and cats (n = 10). Regarding age, the incidence of UTI was the highest in the 11 to 15 years range (46.3%, 31/67). Regarding sex, it accounted for 58.2% (n = 39) in female dogs and 11.9% (8/67) in female cats. Phylogroup B2 was the most frequent (n = 51, 75.0%) among all strains, followed by D (16.2%), A (7.4%), and B1 (1.5%). Thirty-seven (55.2%) UPECs were multidrug-resistant (MDR), and 24 (35.8%) of them belonged to phylogroup B2. Extended-spectrum cephalosporin and carbapenemase genes were detected in 18 (26.9%) UPECs and plasmids carrying these resistance genes were conjugated between strains. Thirty sequence types (STs) were identified among the total strains. Among the UPECs (n = 51) with phylogroup B2, 23 STs were identified, with ST73 being the most frequent (n = 12, 17.9%), followed by ST131 (n = 9, 13.4%).</p><p><strong>Conclusions and relevance: </strong>Phylogroup B2 strains, particularly ST73 and ST121, were most prevalent in UPECs from Korean companion dogs and cats. For MDR UPECs, appropriate antibiotic selection is essential for the treatment of UTIs.</p>","PeriodicalId":17557,"journal":{"name":"Journal of Veterinary Science","volume":"26 1","pages":"e14"},"PeriodicalIF":1.5,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11799088/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143123170","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Evaluation of different PK/PD ratios of three enrofloxacin preparations on the clinical response of pneumonic calves.","authors":"Lilia Gutiérrez, Isela Mejía-Arthur, Eduardo Posadas-Manzano, Noe Rodríguez-Becerril, Reyes López-Ordaz, Héctor Sumano","doi":"10.4142/jvs.24161","DOIUrl":"10.4142/jvs.24161","url":null,"abstract":"<p><strong>Importance: </strong>Enrofloxacin preparations are available for administration daily or every 3 days. This study presents clinical evidence to define which preparation is adequate to treat clinical cases of bovine respiratory disease (BRD) in calves.</p><p><strong>Objective: </strong>To correlate the pharmacokinetics/pharmacodynamics (PK/PD) ratios of three pharmaceutical preparations of enrofloxacin with their clinical efficacy in treating BRD.</p><p><strong>Methods: </strong>The PK/PD ratios of three enrofloxacin preparations were determined in healthy calves. Then, 48 BRD-affected calves initially treated IV with 2.2 mg/kg of flunixin-meglumine, were randomly assigned to treatment with: enrofloxacin dihydrate-hydrochloride (enro-C) 10% water suspension daily (10 mg/kg subcutaneous for three to six days); enro-C with alginate (enro-C/Al), and reference enrofloxacin (enro-R), both intended for treatment every 72-h in two occasions (10 mg/kg).</p><p><strong>Results: </strong>The highest maximum plasma concentration (Cmax)/minimum inhibitory concentration (MIC) ratio was obtained with enro-C and the highest area under the curve (AUC)_0-72/MIC ratio with enro-R, and enro-C/Al exhibited an AUC_0-72/MIC smaller, but Cmax/MIC higher than enro-R. Based on repeated statistical measurements, clinical progress revealed that the best outcomes were observed with enro-C (<i>p</i> < 0.05), and no statistical differences resulted by comparing enro-C/Al with enro-R.</p><p><strong>Conclusions and relevance: </strong>If the priority in calves affected by BRD is to speed up their recovery, and despite the more significant amount enro-C injected, using of lower doses of enrofloxacin as in the long-acting preparations is unsustainable. This study demonstrates that the clinical efficacy of enrofloxacin in cattle is optimally linked to Cmax/MIC rather than to AUC/MIC, which occurs better when injecting enro-C.</p>","PeriodicalId":17557,"journal":{"name":"Journal of Veterinary Science","volume":" ","pages":"e7"},"PeriodicalIF":1.5,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11799083/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142921665","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Risk scoring of African swine fever transmission in selected provinces of the Philippines.","authors":"John Michael G Bernardo, Aaron Paul R Serdeña, Gladys Maria V Pangga, Saubel Ezrael A Salamat, Trisha Nicole Agulto, Cherry P Fernandez-Colorado","doi":"10.4142/jvs.24149","DOIUrl":"10.4142/jvs.24149","url":null,"abstract":"<p><strong>Importance: </strong>African swine fever (ASF) is a contagious transboundary swine disease that poses a significant threat to the swine industry. As an archipelago, the Philippines has a geographic advantage in reducing ASF transmission risk. However, control efforts remain challenging due to the disease's complex epidemiology, lack of effective treatment, and vaccine availability. ASF transmission risk evaluation currently includes positive cases, population density, and pork production volume, but the potential role of contaminated pork commodities remains unexplored.</p><p><strong>Objective: </strong>Using semiquantitative risk scoring, this study estimated the probability of ASF transmission in 23 selected provinces.</p><p><strong>Methods: </strong>The factors influencing ASF spread were identified; 10 through a literature review and the positivity for ASF virus (ASFv) of meat samples from an ongoing surveillance study. Secondary data from each sampled province were collected, and the provinces were scored across these factors and classified into one of three risk categories.</p><p><strong>Results: </strong>Six out of 23 provinces were categorized as high-risk due to the high number of ASFv-positive meat samples, backyard pigs, and ASF occurrences. Conversely, four provinces were classified as low-risk due to consistently low scores across all indicators. The difference in the meat contamination level between low- and high-risk provinces emphasizes the importance of including this factor in the ASF spread assessment.</p><p><strong>Conclusions and relevance: </strong>Risk estimation of ASF transmission must consider meat sample contamination. Active surveillance at local borders can monitor contamination and prevent ASFv sources from entering areas. This approach allows the government to allocate resources and prioritize higher-risk areas.</p>","PeriodicalId":17557,"journal":{"name":"Journal of Veterinary Science","volume":" ","pages":"e2"},"PeriodicalIF":1.5,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11799093/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142921708","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Serological baseline, antibody stability and efficacy of different types of avian influenza (H5) vaccines.","authors":"Mohammed Reza Rouygari, Mansour Mayahi, Mehdi Vasfi Marandy, Zahra Boroomand","doi":"10.4142/jvs.24045","DOIUrl":"10.4142/jvs.24045","url":null,"abstract":"<p><strong>Importance: </strong>Evaluating Iran's national highly pathogenic avian influenza (HPAI) control program can inform vaccine selection, optimize immunization duration, guide exit strategies, and assess hemagglutination inhibition (HI) and serum neutralization (SN) methods.</p><p><strong>Objective: </strong>To establish a serological baseline, assess antibody stability, and compare the efficacy of three HPAI (H5) vaccines.</p><p><strong>Methods: </strong>We analyzed over 9,000 blood samples and 6,420 swabs from approximately 1.5 million birds up to 64 weeks old. HI (β, α), RT-PCR, and SN tests were conducted, with statistical analysis performed using two-way ANOVA.</p><p><strong>Results: </strong>The serological baseline (GM titer) using H5N8 antigens from A/Chicken/Iran/162/2016 varied. The Re6+Re8 vaccine produced higher and more stable HI β titers than the H5N3 and baculovirus vaccines. Serum HI α neutralization ability was similar for Re6+Re8 and H5N3 vaccines, both 100 times greater than the baculovirus vaccine. Neutralization indices for H5N3, Re6+Re8, and baculovirus vaccines were 4.7, 4.5, and 4.2 (log2), respectively.</p><p><strong>Conclusions and relevance: </strong>After two vaccinations, Re6+Re8 exhibited the most stable HI β antibody response, while H5N3 had the highest neutralization index, surpassing Re6+Re8 by 0.2 and the baculovirus vaccine by 0.5. These findings highlight discrepancies between HI β and SN test results, with SN being a stronger indicator of protective titers due to its in vivo methodology, compared to the in vitro HI assay.</p>","PeriodicalId":17557,"journal":{"name":"Journal of Veterinary Science","volume":"26 1","pages":"e4"},"PeriodicalIF":1.5,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11799092/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143123171","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Whole genome sequencing analysis of enteropathogenic <i>Escherichia coli</i> from human and companion animals in Korea.","authors":"Jae Young Oh, Kyung-Hyo Do, Jae Hong Jeong, SuMin Kwak, Sujin Choe, Dongheui An, Jong-Chan Chae, Kwangjun Lee, Kwang-Won Seo","doi":"10.4142/jvs.24225","DOIUrl":"10.4142/jvs.24225","url":null,"abstract":"<p><strong>Importance: </strong>This study is essential for comprehending the zoonotic transmission, antimicrobial resistance, and genetic diversity of enteropathogenic <i>Escherichia coli</i> (EPEC).</p><p><strong>Objective: </strong>To improve our understanding of EPEC, this study focused on analyzing and comparing the genomic characteristics of EPEC isolates from humans and companion animals in Korea.</p><p><strong>Methods: </strong>The whole genome of 26 EPEC isolates from patients with diarrhea and 20 EPEC isolates from companion animals in Korea were sequenced using the Illumina HiSeq X (Illumina, USA) and Oxford Nanopore MinION (Oxford Nanopore Technologies, UK) platforms.</p><p><strong>Results: </strong>Most isolates were atypical EPEC, and did not harbor the <i>bfpA</i> gene. The most prevalent virulence genes were found to be <i>ompT</i> (humans: 61.5%; companion animals: 60.0%) followed by <i>lpfA</i> (humans: 46.2%; companion animals: 60.0%). Although pan-genome analyses showed no apparent correlation among the origin of the strains, virulence profiles, and antimicrobial resistance profiles, isolates included in clade A obtained from both humans and companion animals exhibited high similarity. Additionally, all the isolates included in clade A encoded the <i>ompT</i> gene and did not encode the <i>hlyE</i> gene. The two isolates from companion animals harbored an incomplete bundle-forming pilus region encoding <i>bfpA</i> and <i>bfpB</i>. Moreover, the type IV secretion system-associated genes <i>tra</i> and <i>trb</i> were found in the <i>bfpA</i>-encoding isolates from humans.</p><p><strong>Conclusions and relevance: </strong>Whole-genome sequencing enabled a more accurate analysis of the phylogenetic structure of EPEC and provided better insights into the understanding of EPEC epidemiology and pathogenicity.</p>","PeriodicalId":17557,"journal":{"name":"Journal of Veterinary Science","volume":" ","pages":"e1"},"PeriodicalIF":1.5,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11799085/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142921929","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effect of ELHLD peptide for stifle function recovery after tibial plateau leveling osteotomy in dogs.","authors":"Jonghyop Lee, Hun-Young Yoon","doi":"10.4142/jvs.24154","DOIUrl":"10.4142/jvs.24154","url":null,"abstract":"<p><strong>Importance: </strong>Patients with arthritis and ruptured cruciate ligaments typically require surgery. Following surgery, it is necessary to improve joint function in early stage.</p><p><strong>Objective: </strong>This study aimed to investigate the impact of intraoperative intra-articular injection of the ELHLD peptide (L-glutamyl-L-leucyl-L-histidyl-L-leucyl-L-aspartic acid) on postoperative stifle function in patients with medial patella luxation grade 3 and osteoarthritis grade 2 undergoing tibial plateau leveling osteotomy due to anterior cruciate ligament (ACL) rupture.</p><p><strong>Methods: </strong>A total of 12 dogs participated, with 6 dogs assigned to the control group and 6 to the ELHLD peptide treatment group. The ELHLD peptide was administered by intra-articular injection to patients, and the following aspects were compared with the control: hindlimb circumference, balance evaluation score (BES), muscle mass, and stifle function score (SFS). These assessments were conducted at 2, 4, 8, and 12 weeks after surgery.</p><p><strong>Results: </strong>In the treatment group, hindlimb circumference suggested an effect on the recovery stifle function at the 4th and 8th week (<i>p</i> < 0.05) after surgery, and the BES and muscle mass test were effective at 4th week (<i>p</i> < 0.05). In the SFS test, it was effective at 2nd week (<i>p</i> < 0.05).</p><p><strong>Conclusions and relevance: </strong>The use of ELHLD injections is meaningful in that it helps rapid recovery of joint function in the early stages after surgery. This research might improve the satisfaction of the caregiver, and facilitate the overall recovery process in the patient.</p>","PeriodicalId":17557,"journal":{"name":"Journal of Veterinary Science","volume":" ","pages":"e6"},"PeriodicalIF":1.5,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11799084/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142921621","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Successful management of tracheal stenosis using tracheal stenting in a Russian Blue cat.","authors":"Eunji Hur, Yong Gwan Park, Jiyun Cha, Min-Yeong Lee, Jaekyoung Lee, Hwi-Yool Kim, Aryung Nam","doi":"10.4142/jvs.24286","DOIUrl":"10.4142/jvs.24286","url":null,"abstract":"<p><strong>Importance: </strong>Tracheal stenosis in cats, often resulting from endotracheal intubation, can cause life-threatening respiratory emergencies, requiring prompt and effective treatment. In this case, we demonstrate that tracheal stenting can effectively manage respiratory distress caused by tracheal stenosis in cats.</p><p><strong>Case presentation: </strong>A 12-year-old neutered male Russian Blue cat presented with progressively worsening open-mouth breathing and coughing that began post-intubation and inhalation anesthesia for dental scaling 5 months before presentation. Computed tomography revealed a broad-based lesion protruding into the tracheal lumen at the thoracic inlet, resulting in localized luminal narrowing. Tracheoscopy and brush cytology led to a provisional diagnosis of tracheal stenosis with reactive hyperplasia and chronic granulomas caused by endotracheal intubation. Following diagnostic processes, the cat experienced severe respiratory distress, eventually leading to a stupor. Respiratory distress was alleviated after tracheal stent placement. The cat was prescribed anti-inflammatory drugs, antibiotics, bronchodilators, and antitussives and was discharged after 2 days of hospitalization. The stent remained well-positioned during the 27-month follow-up, with no complications or mucosal regrowth observed at the stenosis site.</p><p><strong>Conclusions and relevance: </strong>This case is the first instance of using tracheal stenting to effectively manage tracheal stenosis in a cat, successfully resolving a respiratory emergency, and ensuring long-term care.</p>","PeriodicalId":17557,"journal":{"name":"Journal of Veterinary Science","volume":"26 1","pages":"e15"},"PeriodicalIF":1.5,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11799091/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143123172","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Adenylate kinase 5 deficiency impairs epididymal white adipose tissue homeostasis and decreases fat mass.","authors":"Sungkyung Hwang, Jiye Kim, Je Kyung Seong","doi":"10.4142/jvs.24269","DOIUrl":"10.4142/jvs.24269","url":null,"abstract":"<p><strong>Importance: </strong>The brain and adipose tissue interact metabolically, and if there is a problem with the energy metabolism of the brain, it cannot maintain the energy balance with the adipose tissue. Therefore, when adenylate kinase 5 (<i>AK5</i>), which regulates energy metabolism in the brain, is knocked out, problems with lipid metabolism may occur.</p><p><strong>Objective: </strong>We aimed to elucidate the metabolic function and phenotype of <i>AK5</i>, a gene with an unknown function in metabolism.</p><p><strong>Methods: </strong>We generated <i>AK5</i> knockout (KO) mice and administered high-fat and fasting diets to the mice to confirm their physiological phenotype and metabolic differences.</p><p><strong>Results: </strong>In the high-fat diet (HFD) test, no differences in body weight, epididymal white adipose tissue (eWAT), or fat mass of <i>AK5</i> KO mice were observed. In indirect calorimetry, the respiratory exchange ratio and activity counts increased in normal chow diet mice, but there was no difference between the HFD groups. At the mRNA level, there were no significant differences in the expression of lipid metabolism markers between wild-type and <i>AK5</i> KO mice. Still, the glucose signal of adipocytes increased in <i>AK5</i> KO mice. In the fasting test, the eWAT of <i>AK5</i> KO mice was significantly reduced, as was the expression of lipid metabolism and inflammation-related immune markers. Thus, the apoptosis of adipocytes increased, and an imbalance in energy metabolism occurred.</p><p><strong>Conclusions and relevance: </strong>When <i>AK5</i> KO mice are energy deficient, it becomes difficult to use eWAT for energy storage, imbalance occurs, and apoptosis of adipocytes in eWAT increases.</p>","PeriodicalId":17557,"journal":{"name":"Journal of Veterinary Science","volume":" ","pages":"e5"},"PeriodicalIF":1.5,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11799087/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142921247","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}