Journal of veterinary pharmacology and therapeutics最新文献

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Pharmacokinetics and Plasma Protein Binding of Flunixin in Rainbow Trout (Oncorhynchus mykiss). 虹鳟鱼(Oncorhynchus mykiss)体内氟尼辛的药代动力学和血浆蛋白结合。
IF 1.5 4区 农林科学
Journal of veterinary pharmacology and therapeutics Pub Date : 2024-09-15 DOI: 10.1111/jvp.13481
Kamil Uney, Orhan Corum, Duygu Durna Corum, Devran Coskun, Fatih Sakin, Muammer Elmas
{"title":"Pharmacokinetics and Plasma Protein Binding of Flunixin in Rainbow Trout (Oncorhynchus mykiss).","authors":"Kamil Uney, Orhan Corum, Duygu Durna Corum, Devran Coskun, Fatih Sakin, Muammer Elmas","doi":"10.1111/jvp.13481","DOIUrl":"https://doi.org/10.1111/jvp.13481","url":null,"abstract":"<p><p>Flunixin's pharmacokinetics, bioavailability, and plasma protein binding were examined in rainbow trout. The experiment involved 252 rainbow trout (Oncorhynchus mykiss) maintained at 12 ± 0.6°C. Flunixin was administered to rainbow trout via intravascular (IV), intramuscular (IM), and oral routes at a dosage of 2.2 mg/kg. Plasma samples were collected at times 0 (control), 0.25, 0.5, 1, 2, 4, 6, 8, 10, 12, 24, 48, 72, and 96 h. High-pressure liquid chromatography-ultraviolet was employed to quantify flunixin concentrations. The elimination half-life (t<sub>1/2ʎz</sub>) for flunixin was 8.37 h for IV, 8.68 h for IM, and 8.76 h for oral. The t<sub>1/2ʎz</sub> was similar between administration groups. The volume of distribution at a steady state and total body clearance were 55.81 mL/kg and 6.83 mL/h/kg, respectively, after IV administration. The mean peak plasma concentration was 6.24 ± 0.41 μg/mL at 4 h for oral administration and 13.98 ± 0.86 μg/mL at 2 h for IM administration. The in vitro protein binding ratio of flunixin in rainbow trout plasma was 96.34 ± 2.29%. The bioavailability of flunixin after oral (25.74%) administration was lower than that after IM (66.70%) administration. Thus, developing an oral pharmaceutical formulation that can be administered with feed and has high bioavailability could enhance the therapeutic effect.</p>","PeriodicalId":17596,"journal":{"name":"Journal of veterinary pharmacology and therapeutics","volume":" ","pages":""},"PeriodicalIF":1.5,"publicationDate":"2024-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142290154","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
The Vehicle of Administration and Prandial State May Reduce the Spectrum of Oral Broad-Spectrum Antibiotics (Oxytetracycline, Fosfomycin and Amoxicillin) Administered to Piglets: A Pharmacokinetic/Pharmacodynamic Approach. 给药载体和餐前状态可能会降低仔猪口服广谱抗生素(土霉素、磷霉素和阿莫西林)的药效谱:药代动力学/药效学方法。
IF 1.5 4区 农林科学
Journal of veterinary pharmacology and therapeutics Pub Date : 2024-08-30 DOI: 10.1111/jvp.13479
Julieta M Decundo, Susana N Dieguez, Guadalupe Martínez, Fabián A Amanto, Denisa S Pérez Gaudio, Alejandro L Soraci
{"title":"The Vehicle of Administration and Prandial State May Reduce the Spectrum of Oral Broad-Spectrum Antibiotics (Oxytetracycline, Fosfomycin and Amoxicillin) Administered to Piglets: A Pharmacokinetic/Pharmacodynamic Approach.","authors":"Julieta M Decundo, Susana N Dieguez, Guadalupe Martínez, Fabián A Amanto, Denisa S Pérez Gaudio, Alejandro L Soraci","doi":"10.1111/jvp.13479","DOIUrl":"https://doi.org/10.1111/jvp.13479","url":null,"abstract":"<p><p>The objective of this study was to assess the impact of the vehicle of administration and the prandial state of post weaning piglets on the indices of therapeutic efficacy for different broad-spectrum antibiotic/pathogen combinations. Pharmacokinetic data were retrieved from previous studies, in which we orally administered oxytetracycline (OTC), fosfomycin (FOS), or amoxicillin (AMX) according to the following treatments: dissolved in soft water to fasted or non-fasted piglets, dissolved in hard water to fasted or non-fasted piglets, and mixed with feed. Minimum inhibitory concentration (MIC) values for susceptible strains of bacteria causing swine diseases were obtained from the database of European Committee on Antimicrobial Susceptibility Testing (EUCAST) for each antibiotic. Pharmacokinetic/pharmacodynamic (PK/PD) indices of therapeutic efficacy-drug exposure over the dosing interval (fAUC/MIC) for OTC and FOS; time that free drug concentration remains above MIC (%fT>MIC) for AMX-were calculated for each antibiotic/pathogen combination under each treatment. After all OTC and in-feed FOS and AMX treatments, the indices of therapeutic efficacy were below the target value for all the study microorganisms. When FOS or AMX were delivered dissolved in soft or hard water, the indices were above the target value over which therapeutic efficacy would be expected for Escherichia coli treated with FOS and, Glaesserella parasuis, Pasteurella multocida, and Actinobacillus pleuropneumoniae treated with AMX. The prandial state of piglets showed no influence on the indices of therapeutic efficacy. Pharmacokinetic profiles of broad-spectrum antibiotics, specifically the ability to achieve target concentrations, may be largely reduced due to drug interactions with components present in feed or water resulting in a discrepancy with PK/PD principles of prudent and responsible use of antibiotics.</p>","PeriodicalId":17596,"journal":{"name":"Journal of veterinary pharmacology and therapeutics","volume":" ","pages":""},"PeriodicalIF":1.5,"publicationDate":"2024-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142108821","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Pharmacokinetics of Enrofloxacin and Its Metabolite Ciprofloxacin in Nanyang Cattle. 南阳牛体内恩诺沙星及其代谢物环丙沙星的药代动力学。
IF 1.5 4区 农林科学
Journal of veterinary pharmacology and therapeutics Pub Date : 2024-08-16 DOI: 10.1111/jvp.13478
Fang Yang, Long-Ji Sun, Fan Yang, Shi-Hao Li, Yu-Xin Chen, Wen-Rui Wang
{"title":"Pharmacokinetics of Enrofloxacin and Its Metabolite Ciprofloxacin in Nanyang Cattle.","authors":"Fang Yang, Long-Ji Sun, Fan Yang, Shi-Hao Li, Yu-Xin Chen, Wen-Rui Wang","doi":"10.1111/jvp.13478","DOIUrl":"https://doi.org/10.1111/jvp.13478","url":null,"abstract":"<p><p>The objective of this study was to determine the pharmacokinetics of enrofloxacin and its metabolite, ciprofloxacin, in Nanyang cattle after a single intravenous (IV), and intramuscular (IM) administration of enrofloxacin at 2.5 mg/kg body weight (BW). Blood samples were collected at predetermined time points. Enrofloxacin and ciprofloxacin concentrations in plasma were simultaneously determined using a high-performance liquid chromatography (HPLC) assay method and subjected to a non-compartmental analysis. After IV administration, enrofloxacin had a mean (±SD) volume of distribution at steady state (V<sub>SS</sub>) of 1.394 ± 0.349 L/kg, a terminal half-life (t<sub>1/2λz</sub>) of 3.592 ± 1.205 h, and a total body clearance (Cl) of 0.675 ± 0.16 L/h/kg. After IM administration, enrofloxacin was absorbed relatively slowly but completely, with a mean absorption time (MAT) of 6.051 ± 1.107 h and a bioavailability of 99.225 ± 7.389%. Both compounds were detected simultaneously in most plasma samples following both routes of administration, indicating efficient biotransformation of enrofloxacin to ciprofloxacin. After IV injection, the peak concentration (C<sub>max</sub>) of ciprofloxacin was 0.315 ± 0.017 μg/mL, observed at 0.958 ± 0.102 h. Following IM injection, the corresponding values were 0.071 ± 0.006 μg/mL and 3 ± 1.095 h, respectively. Following IV and IM administration, the conversion ratio of enrofloxacin to ciprofloxacin was calculated as 59.2 ± 9.6% and 31.2 ± 7.7%, respectively. The present results demonstrated favorable pharmacokinetic profiles for enrofloxacin, characterized by complete absorption with relatively slow kinetics, extensive distribution, efficient biotransformation to ciprofloxacin, and prolonged elimination in Nanyang cattle.</p>","PeriodicalId":17596,"journal":{"name":"Journal of veterinary pharmacology and therapeutics","volume":" ","pages":""},"PeriodicalIF":1.5,"publicationDate":"2024-08-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141988292","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
The pharmacokinetics/pharmacodynamics integration of tilmicosin against Mycoplasma synoviae in vitro and in vivo 替米考星对滑膜支原体的体外和体内药代动力学/药效学整合。
IF 1.5 4区 农林科学
Journal of veterinary pharmacology and therapeutics Pub Date : 2024-08-12 DOI: 10.1111/jvp.13475
Xiu Yan, Jinxin Liu, Weihuo Li, Shuti Song, Zhaofeng Yao, Yixin Jia, Sheng Yuan, Hong Yang, Nan Zhang
{"title":"The pharmacokinetics/pharmacodynamics integration of tilmicosin against Mycoplasma synoviae in vitro and in vivo","authors":"Xiu Yan,&nbsp;Jinxin Liu,&nbsp;Weihuo Li,&nbsp;Shuti Song,&nbsp;Zhaofeng Yao,&nbsp;Yixin Jia,&nbsp;Sheng Yuan,&nbsp;Hong Yang,&nbsp;Nan Zhang","doi":"10.1111/jvp.13475","DOIUrl":"10.1111/jvp.13475","url":null,"abstract":"<p><i>Mycoplasma synoviae</i> (MS) infection is a serious threat to poultry industry in China. Tilmicosin is a semisynthetic macrolide antibiotic used only in animals and has shown potential efficacy against MS, but there were no reported articles concerning the pharmacokinetics/pharmacodynamics (PK/PD) interactions of tilmicosin against MS in vitro and vivo. This study aimed to assess the antibacterial activity of tilmicosin against MS in vitro and in vivo using PK/PD model to provide maximal efficacy. The minimum inhibitory concentration (MIC) and killing rates of different drug concentrations were measured using the microdilution method in vitro. Then, tilmicosin was administered orally to the MS-infected chickens at doses of 7.5 and 60 mg/kg, and the PK parameters of tilmicosin in joint dialysates were determined using high-pressure liquid chromatography/tandem mass spectrometry (HPLC-MS/MS) combined with the microdialysis technique. The antibacterial effect (△E) was calculated when the infected chickens were administered a single oral dose of tilmicosin at 4, 7.5, 15, 30, and 60 mg/kg b.w. The PK and PD data were fitted using the Sigmoid <i>E</i><sub>max</sub> model to evaluate the PK/PD interactions of tilmicosin against MS. The bactericidal activity of tilmicosin against MS was concentration dependent. Furthermore, the PK/PD index of AUC<sub>0–72h</sub>/MIC exhibited the most optimal fitting results (<i>R</i><sup>2</sup> = .98). The MS load decreased by 1, 2, and 3 Log<sub>10</sub> CFU/mL, then AUC/MIC was determined as 13.99, 20.53, and 28.23 h, respectively, and the bactericidal effect can be achieved when the dose of MS-infected chickens is at 31.64 mg/kg b.w. The findings of this study hold significant implications for optimizing the treatment regimen for MS infection.</p>","PeriodicalId":17596,"journal":{"name":"Journal of veterinary pharmacology and therapeutics","volume":"47 6","pages":"503-511"},"PeriodicalIF":1.5,"publicationDate":"2024-08-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141971390","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Assessment of Single-Dose Pharmacokinetics of Oxolinic Acid in Rainbow Trout and Determination of In Vitro Antibacterial Activity Against Pathogenic Bacteria From Diseased Fish. 评估 Oxolinic Acid 在虹鳟鱼体内的单剂量药代动力学,并确定其对病鱼致病菌的体外抗菌活性。
IF 1.5 4区 农林科学
Journal of veterinary pharmacology and therapeutics Pub Date : 2024-08-09 DOI: 10.1111/jvp.13477
Richa Pathak, Sumanta Kumar Mallik, Prasanna Kumar Patil, Neetu Shahi, Krishna Kala, Raja Adil Hussain Bhat, Ranjit Kumar Nadella, Nityanand Pandey, Pramod Kumar Pandey
{"title":"Assessment of Single-Dose Pharmacokinetics of Oxolinic Acid in Rainbow Trout and Determination of In Vitro Antibacterial Activity Against Pathogenic Bacteria From Diseased Fish.","authors":"Richa Pathak, Sumanta Kumar Mallik, Prasanna Kumar Patil, Neetu Shahi, Krishna Kala, Raja Adil Hussain Bhat, Ranjit Kumar Nadella, Nityanand Pandey, Pramod Kumar Pandey","doi":"10.1111/jvp.13477","DOIUrl":"https://doi.org/10.1111/jvp.13477","url":null,"abstract":"<p><p>In response to the heightened risk of bacterial diseases in fish farms caused by increased demand for fish consumption and subsequent overcrowding, researchers are currently investigating the efficacy and residue management of oxolinic acid (OA) as a treatment for bacterial infections in fish. This research is crucial for gaining a comprehensive understanding of the pharmacokinetics of OA. The present study investigates pharmacokinetics of OA in juvenile rainbow trout. The fish were given a 12 mg kg<sup>-1</sup> dose of OA through their feed, and tissue samples were collected of the liver, kidney, gill, intestine, muscle, and plasma for analysis using LC-MS/MS. The highest concentrations of the drug were found in the gill (4096.55 μg kg<sup>-1</sup>) and intestine (11592.98 μg kg<sup>-1</sup>), with significant absorption also seen in the liver (0.36 L/h) and gill (0.07 L/h) (p < 0.05). The liver (0.21 L/h) and kidney (0.03 L/h) were found to be the most efficient (p < 0.05) at eliminating the drug. The study also confirmed the drug antimicrobial effectiveness against several bacterial pathogens, including Shewanella xiamenensis (0.25 μg mL<sup>-1</sup>), Lactococcus garvieae (1 μg mL<sup>-1</sup>), and Chryseobacterium aquaticum (4 μg mL<sup>-1</sup>). The study concludes significant variations among different fish tissues, with higher concentrations and longer half-lives observed in the kidney and intestine. The lowest MIC value recorded against major bacterial pathogens demonstrated its therapeutic potential in aquaculture. It also emphasizes the importance of understanding OA pharmacokinetics to optimize antimicrobial therapy in aquaculture.</p>","PeriodicalId":17596,"journal":{"name":"Journal of veterinary pharmacology and therapeutics","volume":" ","pages":""},"PeriodicalIF":1.5,"publicationDate":"2024-08-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141907003","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Pharmacokinetics and pharmacodynamics of two in-feed chlortetracycline regimens provided to beef cattle 肉牛两种饲用金霉素方案的药代动力学和药效学。
IF 1.5 4区 农林科学
Journal of veterinary pharmacology and therapeutics Pub Date : 2024-07-22 DOI: 10.1111/jvp.13474
Alyssa R. Toillion, Michael D. Apley, Johann F. Coetzee, Kushan Kompalage
{"title":"Pharmacokinetics and pharmacodynamics of two in-feed chlortetracycline regimens provided to beef cattle","authors":"Alyssa R. Toillion,&nbsp;Michael D. Apley,&nbsp;Johann F. Coetzee,&nbsp;Kushan Kompalage","doi":"10.1111/jvp.13474","DOIUrl":"10.1111/jvp.13474","url":null,"abstract":"<p>Plasma chlortetracycline (CTC) concentration data were subjected to Monte Carlo simulation of area under the concentration curve (AUC) values related to bovine respiratory disease pathogen MIC distributions to evaluate target attainment rates. Crossbred Hereford heifers were randomly assigned into two treatment groups. Treatment group (A) received chlortetracycline (CTC) at a target dose of 22 mg/kg of bodyweight daily for 5 consecutive days (<i>n</i> = 8) and group (B) received CTC at 350 mg/head per day (1.5 ± 0.2 mg/kg based on actual bodyweights) for seven consecutive days (<i>n</i> = 8). Non-compartmental analysis was used to calculate plasma-free drug CTC area under the concentration curves. The mean observed (±SD) free drug AUC values were 4.18 (±1.72) μg × h/mL and 0.30 (±0.06) μg × h/mL for treatment groups A and B, respectively. The probability of target attainment for AUC<sub>24</sub>/MIC values of 25 and 12.5 was modeled using Monte Carlo simulations. Treatment group A achieved &gt;90% target attainment (AUC<sub>24</sub>/MIC of 25) at an MIC of 0.06 μg/mL, whereas treatment group B displayed only 12.6% target attainment (AUC<sub>24</sub>/MIC of 12.5) at the lowest MIC evaluated (0.015 μg/mL). Both in-feed CTC regimens failed to obtain a reasonable target attainment rate in light of expected MIC distributions of potential pathogens.</p>","PeriodicalId":17596,"journal":{"name":"Journal of veterinary pharmacology and therapeutics","volume":"47 6","pages":"469-477"},"PeriodicalIF":1.5,"publicationDate":"2024-07-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141748497","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Single intravenous and oral dose pharmacokinetics of the antiseizure medication brivaracetam in healthy cats 在健康猫体内单次静脉注射和口服抗癫痫药物布瓦西坦的药代动力学。
IF 1.5 4区 农林科学
Journal of veterinary pharmacology and therapeutics Pub Date : 2024-07-17 DOI: 10.1111/jvp.13473
Tom Jukier, Chu Zhang, Robert D. Arnold, Amanda Gross
{"title":"Single intravenous and oral dose pharmacokinetics of the antiseizure medication brivaracetam in healthy cats","authors":"Tom Jukier,&nbsp;Chu Zhang,&nbsp;Robert D. Arnold,&nbsp;Amanda Gross","doi":"10.1111/jvp.13473","DOIUrl":"10.1111/jvp.13473","url":null,"abstract":"<p>The number of available antiseizure medications with demonstrated efficacy in cats is limited. As such, there is a need to evaluate the pharmacokinetics of newer medications so that proper dosing regimens can be made. Brivaracetam (BRV) is a more potent analogue of levetiracetam, and is Food and Drug Administration approved for use in people. The goal of this study was to describe the pharmacokinetics of intravenous and oral doses of BRV in healthy cats. A cross-over study involving eight healthy cats, that were administered 10 mg of BRV intravenously as a bolus and orally in the fasted state. Blood samples were collected over 24 h. Analysis was performed using liquid chromatography-mass spectrometry. Data were subjected to non-compartmental analysis. Median (min–max) of maximal concentration, time to maximal concentration, area under the curve, elimination half-life and oral absolute bioavailability were 902 (682–1036) ng/mL, 0.6 (0.5–2.0) h, 6.4 (5.2–7.2) h, 8145 (6669–9351) ng × h/mL and 100% (85–110) respectively. BRV appeared to be well tolerated by all cats. A single dose of BRV is well tolerated both orally and intravenously. Maximal concentrations are produced rapidly and within the human reference interval considered to be therapeutic.</p>","PeriodicalId":17596,"journal":{"name":"Journal of veterinary pharmacology and therapeutics","volume":"47 6","pages":"461-468"},"PeriodicalIF":1.5,"publicationDate":"2024-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141627115","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Comparative pharmacokinetics of a single oral dose of meloxicam in the California sea lion (Zalophus californianus) and Pacific harbor seal (Phoca vitulina richardii) 加州海狮(Zalophus californianus)和太平洋海豹(Phoca vitulina richardii)单次口服美洛昔康的药代动力学比较。
IF 1.5 4区 农林科学
Journal of veterinary pharmacology and therapeutics Pub Date : 2024-07-14 DOI: 10.1111/jvp.13469
Emily J. Trumbull, Mark G. Papich, Mattison Peters, Emily R. Whitmer, Michelle Rivard, Cara L. Field
{"title":"Comparative pharmacokinetics of a single oral dose of meloxicam in the California sea lion (Zalophus californianus) and Pacific harbor seal (Phoca vitulina richardii)","authors":"Emily J. Trumbull,&nbsp;Mark G. Papich,&nbsp;Mattison Peters,&nbsp;Emily R. Whitmer,&nbsp;Michelle Rivard,&nbsp;Cara L. Field","doi":"10.1111/jvp.13469","DOIUrl":"10.1111/jvp.13469","url":null,"abstract":"<p>Pharmacokinetics studies have investigated meloxicam, a non-steroidal anti-inflammatory drug, dosing strategies in a wide variety of non-domestic animals; however, there is no prior study examining well-founded dosing for pinnipeds. To develop dosing protocols, pharmacokinetic information is needed, with an examination of differences between pinniped species. Apparently, healthy California sea lions (<i>Zalophus californianus</i>: CSL; <i>n</i> = 13) and Pacific harbor seals (<i>Phoca vitulina richardii</i>: PHS; <i>n</i> = 17) that had completed rehabilitation were enrolled into a population-based pharmacokinetic study. Each animal was administered a single oral dose of meloxicam at 0.1 mg/kg, and two blood samples were collected from each animal at varying intervals during a 96-h study period. Plasma concentrations of meloxicam were determined by high-pressure liquid chromatography. Data were analyzed with nonlinear mixed effects modeling (Phoenix® NLME™, Certara, St. Louis, MO 63105, USA). The results indicated that in PHS, peak plasma concentration (C<sub>max</sub>) was 0.33 μg/mL with an elimination half-life (K<sub>e</sub> t½) of 31.53 h. In CSL, C<sub>max</sub> was 0.17 μg/mL with K<sub>e</sub> t½ of 32.71 h. All animals enrolled completed the study without outward adverse clinical signs. The elimination half-life was longer than previously recommended dosing intervals for pinnipeds; however, we cannot speculate in the optimum clinical dose from these results.</p>","PeriodicalId":17596,"journal":{"name":"Journal of veterinary pharmacology and therapeutics","volume":"47 6","pages":"485-491"},"PeriodicalIF":1.5,"publicationDate":"2024-07-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/jvp.13469","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141603816","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Doxycycline pharmacokinetics and tissue depletion in striped catfish (Pagasianodon hypophthalmus) after oral administration. 口服多西环素后带鱼的药代动力学和组织损耗。
IF 1.5 4区 农林科学
Journal of veterinary pharmacology and therapeutics Pub Date : 2024-07-10 DOI: 10.1111/jvp.13471
Pham Quang Vinh, Nguyen Quoc Thinh, Mathias Devreese, Siska Croubels, Dang Thi Hoang Oanh, Anders Dalsgaard, Masashi Maita, Tran Minh Phu
{"title":"Doxycycline pharmacokinetics and tissue depletion in striped catfish (Pagasianodon hypophthalmus) after oral administration.","authors":"Pham Quang Vinh, Nguyen Quoc Thinh, Mathias Devreese, Siska Croubels, Dang Thi Hoang Oanh, Anders Dalsgaard, Masashi Maita, Tran Minh Phu","doi":"10.1111/jvp.13471","DOIUrl":"https://doi.org/10.1111/jvp.13471","url":null,"abstract":"<p><p>The pharmacokinetics and residue depletion of doxycycline (DOX) in striped catfish (Pagasianodon hypophthalmus) after oral dosage were investigated. The pharmacokinetic experiment was conducted in an aquarium, while the experiment of residue depletion was performed in both an aquarium and earth ponds. Medicated feed was administered orally using the gavage method at a dosage of 20 mg/kg body weight. Blood, liver, and kidney from medicated fish samples were collected. In the depletion experiments, fish were fed medicated feed for five consecutive days at a dosage of 20 mg/kg body weight, with samples collected during and after medication. The concentrations of DOX were quantified using an LC-MS/MS system. The pharmacokinetics parameters of DOX in striped catfish included the absorption rate constant (k<sub>a</sub>), absorption half-life (T<sub>1/2abs</sub>), maximal plasma concentration (C<sub>max</sub>), time to maximal plasma concentration (T<sub>max</sub>), and area under the plasma concentration-time curve from time 0 to 96 h (AUC<sub>0-96 h</sub>) which were 0.12 h<sup>-1</sup>, 5.68 h, 1123.45 ng/mL, 8.19 h, and 25,018 ng/mL/h, respectively. Residue depletion results indicated that the withdrawal times of DOX in muscle (with skin) from fish kept in the aquarium were slightly longer than that in fish raised in earth ponds, corresponding to 194 degree-days compared with 150 degree-days. In conclusion, administration of DOX at the dosage of 20 mg/kg body weight can be used for treatment of bacterial infections in striped catfish, and a withdrawal time of 5 days at 29.4°C will ensure consumer food safety due to the rapid depletion of DOX from muscle and skin.</p>","PeriodicalId":17596,"journal":{"name":"Journal of veterinary pharmacology and therapeutics","volume":" ","pages":""},"PeriodicalIF":1.5,"publicationDate":"2024-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141580107","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
The phenomenon of predatory journals and awareness among researchers in veterinary medicine: Correspondence 掠夺性期刊现象与兽医学研究人员的认识:通信。
IF 1.5 4区 农林科学
Journal of veterinary pharmacology and therapeutics Pub Date : 2024-06-27 DOI: 10.1111/jvp.13468
Hineptch Daungsupawong, Viroj Wiwanitkit
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