1
|
Akam-Baxter EA, Bergemann D, Ridley SJ, To S, Andrea B, Moon B, Ma H, Zhou Y, Aguirre A, Caravan P, Gonzalez-Rosa JM, Sosnovik DE. Dynamics of collagen oxidation and cross linking in regenerating and irreversibly infarcted myocardium. Nat Commun 2024; 15:4648. [PMID: 38858347 PMCID: PMC11164919 DOI: 10.1038/s41467-024-48604-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2023] [Accepted: 04/29/2024] [Indexed: 06/12/2024] Open
Abstract
In mammalian hearts myocardial infarction produces a permanent collagen-rich scar. Conversely, in zebrafish a collagen-rich scar forms but is completely resorbed as the myocardium regenerates. The formation of cross-links in collagen hinders its degradation but cross-linking has not been well characterized in zebrafish hearts. Here, a library of fluorescent probes to quantify collagen oxidation, the first step in collagen cross-link (CCL) formation, was developed. Myocardial injury in mice or zebrafish resulted in similar dynamics of collagen oxidation in the myocardium in the first month after injury. However, during this time, mature CCLs such as pyridinoline and deoxypyridinoline developed in the murine infarcts but not in the zebrafish hearts. High levels of newly oxidized collagen were still seen in murine scars with mature CCLs. These data suggest that fibrogenesis remains dynamic, even in mature scars, and that the absence of mature CCLs in zebrafish hearts may facilitate their ability to regenerate.
Collapse
Affiliation(s)
- Eman A Akam-Baxter
- Cardiovascular Research Center, Cardiology Division, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA.
- Institute for Innovation in Imaging, Massachusetts General Hospital, Boston, MA, USA.
| | - David Bergemann
- Cardiovascular Research Center, Cardiology Division, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
| | - Sterling J Ridley
- Cardiovascular Research Center, Cardiology Division, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
| | - Samantha To
- Cardiovascular Research Center, Cardiology Division, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
| | - Brittany Andrea
- Cardiovascular Research Center, Cardiology Division, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
| | - Brianna Moon
- A.A. Martinos Center for Biomedical Imaging, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
| | - Hua Ma
- A.A. Martinos Center for Biomedical Imaging, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
| | - Yirong Zhou
- Cardiovascular Research Center, Cardiology Division, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
- Wellman Center for Photomedicine, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
| | - Aaron Aguirre
- Cardiovascular Research Center, Cardiology Division, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
- Wellman Center for Photomedicine, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
| | - Peter Caravan
- Institute for Innovation in Imaging, Massachusetts General Hospital, Boston, MA, USA
- A.A. Martinos Center for Biomedical Imaging, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
| | - Juan Manuel Gonzalez-Rosa
- Cardiovascular Research Center, Cardiology Division, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
- Biology Department, Boston College, Chestnut Hill, USA
| | - David E Sosnovik
- Cardiovascular Research Center, Cardiology Division, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
- Institute for Innovation in Imaging, Massachusetts General Hospital, Boston, MA, USA
- A.A. Martinos Center for Biomedical Imaging, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
| |
Collapse
|
2
|
Smith MA, Biancorosso SL, Camp JD, Hailu SH, Johansen AN, Morris MH, Carlson HN. "Tranq-dope" overdose and mortality: lethality induced by fentanyl and xylazine. Front Pharmacol 2023; 14:1280289. [PMID: 37954845 PMCID: PMC10637371 DOI: 10.3389/fphar.2023.1280289] [Citation(s) in RCA: 11] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2023] [Accepted: 10/17/2023] [Indexed: 11/14/2023] Open
Abstract
Introduction: The recreational use of fentanyl in combination with xylazine (i.e., "tranq-dope") represents a rapidly emerging public health threat characterized by significant toxicity and mortality. This study quantified the interactions between these drugs on lethality and examined the effectiveness of potential rescue medications to prevent a lethal overdose. Methods: Male and female mice were administered acute doses of fentanyl, xylazine, or their combination via intraperitoneal injection, and lethality was determined 0.5, 1.0, 1.5, 2.0, and 24 h after administration. Both fentanyl and xylazine produced dose-dependent increases in lethality when administered alone. Results: A nonlethal dose of fentanyl (56 mg/kg) produced an approximately 5-fold decrease in the estimated LD50 for xylazine (i.e., the dose estimated to produce lethality in 50% of the population). Notably, a nonlethal dose of xylazine (100 mg/kg) produced an approximately 100-fold decrease in the estimated LD50 for fentanyl. Both drug combinations produced a synergistic interaction as determined via isobolographic analysis. The opioid receptor antagonist, naloxone (3 mg/kg), but not the alpha-2 adrenergic receptor antagonist, yohimbine (3 mg/kg), significantly decreased the lethality of a fentanyl-xylazine combination. Lethality was rapid, with death occurring within 10 min after a high dose combination and generally within 30 min at lower dose combinations. Males were more sensitive to the lethal effects of fentanyl-xylazine combinations under some conditions suggesting biologically relevant sex differences in sensitivity to fentanyl-xylazine lethality. Discussion: These data provide the first quantification of the lethal effects of "tranq-dope" and suggest that rapid administration of naloxone may be effective at preventing death following overdose.
Collapse
Affiliation(s)
- Mark A. Smith
- Department of Psychology and Program in Neuroscience, Davidson College, Davidson, NC, United States
| | | | | | | | | | | | | |
Collapse
|
3
|
Smith MA, Biancorosso SL, Camp JD, Hailu SH, Johansen AN, Morris MH, Carlson HN. "Tranq-Dope" Overdose and Mortality: Lethality Induced by Fentanyl and Xylazine. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.09.25.559379. [PMID: 37808678 PMCID: PMC10557575 DOI: 10.1101/2023.09.25.559379] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/10/2023]
Abstract
The recreational use of fentanyl in combination with xylazine (i.e., "tranq-dope") represents a rapidly emerging public health threat characterized by significant toxicity and mortality. This study quantified the interactions between these drugs on lethality and examined the effectiveness of potential rescue medications to prevent a lethal overdose. Male and female mice were administered acute doses of fentanyl, xylazine, or their combination via intraperitoneal injection, and lethality was determined 30, 60, 90, 120, and 1440 min (24 hr) after administration. Both fentanyl and xylazine produced dose-dependent increases in lethality when administered alone. A nonlethal dose of fentanyl (56 mg/kg) produced an approximately 5-fold decrease in the estimated LD50 for xylazine (i.e., the dose estimated to produce lethality in 50% of the population). Notably, a nonlethal dose of xylazine (100 mg/kg) produced an approximately 100-fold decrease in the estimated LD50 for fentanyl. The opioid receptor antagonist, naloxone (3 mg/kg), but not the alpha-2 adrenergic receptor antagonist, yohimbine (3 mg/kg), significantly decreased the lethality of a fentanyl-xylazine combination. Lethality was rapid, with death occurring within 10 min after a high dose combination and generally within 30 min at lower dose combinations. Males were more sensitive to the lethal effects of fentanyl-xylazine combinations under some conditions, suggesting biologically relevant sex differences in sensitivity to fentanyl-xylazine lethality. These data provide the first quantification of the lethal effects of "tranq-dope" and suggest that rapid administration of naloxone may be effective at preventing death following overdose.
Collapse
Affiliation(s)
- Mark A. Smith
- Department of Psychology and Program in Neuroscience, Davidson College, Davidson, NC, USA
| | | | - Jacob D. Camp
- Department of Psychology and Program in Neuroscience, Davidson College, Davidson, NC, USA
| | - Salome H. Hailu
- Department of Psychology and Program in Neuroscience, Davidson College, Davidson, NC, USA
| | - Alexandra N. Johansen
- Department of Psychology and Program in Neuroscience, Davidson College, Davidson, NC, USA
| | - Mackenzie H. Morris
- Department of Psychology and Program in Neuroscience, Davidson College, Davidson, NC, USA
| | - Hannah N. Carlson
- Department of Psychology and Program in Neuroscience, Davidson College, Davidson, NC, USA
| |
Collapse
|
4
|
Influence of Antibiotics on Functionality and Viability of Liver Cells In Vitro. Curr Issues Mol Biol 2022; 44:4639-4657. [PMID: 36286032 PMCID: PMC9600611 DOI: 10.3390/cimb44100317] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2022] [Revised: 09/17/2022] [Accepted: 09/22/2022] [Indexed: 11/22/2022] Open
Abstract
(1) Antibiotics are an important weapon in the fight against serious bacterial infections and are considered a common cause of drug-induced liver injury (DILI). The hepatotoxicity of many drugs, including antibiotics, is poorly analyzed in human in vitro models. (2) A standardized assay with a human hepatoma cell line was used to test the hepatotoxicity of various concentrations (Cmax, 5× Cmax, and 10× Cmax) of antibiotics. In an ICU, the most frequently prescribed antibiotics, ampicillin, cefepime, cefuroxime, levofloxacin, linezolid, meropenem, rifampicin, tigecycline, and vancomycin, were incubated with HepG2/C3A cells for 6 days. Cell viability (XTT assay, LDH release, and vitality), albumin synthesis, and cytochrome 1A2 activity were determined in cells. (3) In vitro, vancomycin, rifampicin, and tigecycline showed moderate hepatotoxic potential. The antibiotics ampicillin, cefepime, cefuroxime, levofloxacin, linezolid, and meropenem were associated with mild hepatotoxic reactions in test cells incubated with the testes Cmax concentration. Rifampicin and cefuroxime showed significantly negative effects on the viability of test cells. (4) Further in vitro studies and global pharmacovigilance reports should be conducted to reveal underlying mechanism of the hepatotoxic action of vancomycin, rifampicin, tigecycline, and cefuroxime, as well as the clinical relevance of these findings.
Collapse
|
5
|
Rabea AA, Rashed L, Hassan R. Regenerative capacity of bone marrow stem cells on aged albino rat's parotid excretory duct. Arch Oral Biol 2022; 141:105470. [PMID: 35728514 DOI: 10.1016/j.archoralbio.2022.105470] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2022] [Revised: 05/27/2022] [Accepted: 06/02/2022] [Indexed: 11/24/2022]
Abstract
OBJECTIVE To appraise structural features of parotid excretory duct during senility and probable effect of bone marrow-mesenchymal stem cells (BM-MSCs). DESIGN A total of 14 healthy male albino rats were used. Seven adult rats (24-34-week-old) represented the control group (Group I). Seven senile rats (72-80-week-old) were utilized in which the left parotid gland served as "Old" (Group II) and were injected by 0.2 ml phosphate buffered saline; the right side represented "Old treated" (Group III) and got local injection of 1-1.5 million allogeneic BM-MSCs. One month later, glands were dissected and assessed structurally, ultra-structurally and statistically. RESULT Histologically, Group I showed normal duct histology. In Group II duct lining lost its pseudostratification which was recovered in Group III. PCNA immunolocalization showed moderate reactivity in Group I, negative to mild reaction in Group II, and strong reaction in some of Group III cells. Ultra-structural features of Group I were ordinary in which basal cell had a large flat nucleus, and dark and light cells showed electron-dense cytoplasm and electron-lucent cytoplasm respectively. Tuft cell displayed long microvilli. Mucous droplets filled goblet cell. Group II revealed an apparent reduction in cells size, organelles and absence of tuft cell. In Group III all cell types were detected and they recovered their organelles, cell and nucleus shape. The highest mean area% of PCNA immunoreactivity was in Group I followed by Group III then Group II. CONCLUSIONS Aging has a deteriorating effect on structure and ultra-structure of parotid gland excretory duct that could be amended by BM-MSCs.
Collapse
Affiliation(s)
- Amany A Rabea
- Associate Professor of Oral Biology, Faculty of Oral and Dental Medicine, Future University in Egypt, Cairo, Egypt.
| | - Laila Rashed
- Professor of Biochemistry, Faculty of Medicine, Cairo University, Cairo, Egypt
| | - Rabab Hassan
- Associate Professor of Oral Biology, Faculty of Dentistry, Ain Shams University, Cairo, Egypt
| |
Collapse
|
6
|
McCartan AJS, Curran DW, Mrsny RJ. Evaluating parameters affecting drug fate at the intramuscular injection site. J Control Release 2021; 336:322-335. [PMID: 34153375 DOI: 10.1016/j.jconrel.2021.06.023] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2021] [Revised: 06/15/2021] [Accepted: 06/16/2021] [Indexed: 12/18/2022]
Abstract
Intramuscular (IM) injections are a well-established method of delivering a variety of therapeutics formulated for parenteral administration. While the wide range of commercial IM pharmaceuticals provide a wealth of pharmacokinetic (PK) information following injection, there remains an inadequate understanding of drug fate at the IM injection site that could dictate these PK outcomes. An improved understanding of injection site events could improve approaches taken by formulation scientists to identify therapeutically effective and consistent drug PK outcomes. Interplay between the typically non-physiological aspects of drug formulations and the homeostatic IM environment may provide insights into the fate of drugs at the IM injection site, leading to predictions of how a drug will behave post-injection in vivo. Immune responses occur by design after e.g. vaccine administration, however immune responses post-injection are not in the scope of this article. Taking cues from existing in vitro modelling technologies, the purpose of this article is to propose "critical parameters" of the IM environment that could be examined in hypothesis-driven studies. Outcomes of such studies might ultimately be useful in predicting and improving in vivo PK performance of IM injected drugs.
Collapse
Affiliation(s)
- Adam J S McCartan
- Department of Pharmacy and Pharmacology, University of Bath, Claverton Down, Bath, Avon BA2 7AY, UK
| | - David W Curran
- CMC Analytical, GlaxoSmithKline, Collegeville, PA 19426, USA
| | - Randall J Mrsny
- Department of Pharmacy and Pharmacology, University of Bath, Claverton Down, Bath, Avon BA2 7AY, UK.
| |
Collapse
|
7
|
Qian BJ, Tian CC, Ling XH, Yu LL, Ding FY, Huo JH, Zhu LC, Wen YL, Zhang JH, Jing P. miRNA-150-5p associate with antihypertensive effect of epigallocatechin-3-gallate revealed by aorta miRNome analysis of spontaneously hypertensive rat. Life Sci 2018; 203:193-202. [DOI: 10.1016/j.lfs.2018.04.041] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2018] [Revised: 04/14/2018] [Accepted: 04/22/2018] [Indexed: 12/12/2022]
|
8
|
He HY, Ren YG, Li L, Jin FL, DU YP, Zhang YP. [Influence of cefuroxime sodium on synaptic plasticity of parallel fiber-Purkinje cells in young rats]. ZHONGGUO DANG DAI ER KE ZA ZHI = CHINESE JOURNAL OF CONTEMPORARY PEDIATRICS 2016; 18:558-563. [PMID: 27324547 PMCID: PMC7389086 DOI: 10.7499/j.issn.1008-8830.2016.06.017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Received: 01/30/2016] [Accepted: 04/01/2016] [Indexed: 06/06/2023]
Abstract
OBJECTIVE To investigate the influence of cefuroxime sodium (CS) on the electrophysiological function of cerebellar Purkinje cells (PCs) in Sprague-Dawley rats. METHODS Postnatal day 7 (P7) Sprague-Dawley rats were divided into early administration I and II groups (administered from P7 to P14) and late administration group (administered from P14 to P21), and all the groups received intraperitoneally injected CS. The control groups for early and late administration groups were also established and treated with intraperitoneally injected normal saline of the same volume. There were 10 rats in each group. The rats in the early administration I group and early administration control group were sacrificed on P15, and those in the early administration II group, late administration group, and late administration control group were sacrificed on P22. The whole-cell patch-clamp technique was used to record inward current and action potential of PCs on cerebellar slices, as well as the long-term depression (LTD) of excitatory postsynaptic current (EPSC) in PCs induced by low-frequency stimulation of parallel fiber (PF). RESULTS Compared with the control groups, the early and late administration groups had a slightly higher magnitude of inward current and a slightly higher amplitude of action potential of PCs (P>0.05). All administration groups had a significantly higher degree of EPSC inhibition than the control groups (P<0.01), and the early administration II group had a significantly greater degree of EPSC inhibition than the late administration group (P<0.01). CONCLUSIONS Early CS exposure after birth affects the synaptic plasticity of PF-PCs in the cerebellum of young rats, which persists after drug withdrawal.
Collapse
Affiliation(s)
- Hai-Yan He
- Laboratory of Brian Development, Department of Pediatrics, Xijing Hospital, Fourth Military Medical University, Xi'an 710032, China.
| | | | | | | | | | | |
Collapse
|
9
|
Tanjaya J, Zhang Y, Lee S, Shi J, Chen E, Ang P, Zhang X, Tetradis S, Ting K, Wu B, Soo C, Kwak JH. Efficacy of Intraperitoneal Administration of PEGylated NELL-1 for Bone Formation. Biores Open Access 2016; 5:159-70. [PMID: 27354930 PMCID: PMC4921932 DOI: 10.1089/biores.2016.0018] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
Systemically delivered NEL-like molecule-1 (NELL-1), a potent pro-osteogenic protein, promotes bone formation in healthy and osteoporotic mouse models. PEGylation of NELL-1 (NELL-PEG) increases the half-life of the protein in a mouse model without compromising its osteogenic potential, thereby improving its pharmacokinetics upon systemic delivery. This study consists of a twofold approach: a biodistribution test and an in vivo osteogenic potential test. The biodistribution test compared two commonly used administration methods for drug delivery other than intravenous-intraperitoneal (IP) and subcutaneous (SC)-to examine NELL-PEG biodistribution in mice. Compared to a single-dose SC injection (1.25 mg/kg), a single-dose IP administration yielded a higher protein uptake in the targeted bone sites. When the IP injection dose was doubled to 2.5 mg/kg, the protein remained in the femurs, tibias, and vertebrae for up to 72 h. Next, based on the results of the biodistribution study, IP administration was selected to further investigate the in vivo osteogenic effects of weekly NELL-PEG injection (q7d). In vivo, the IP administered NELL-PEG group showed significantly greater bone mineral density, bone volume fraction, and trabecular bone formation in the targeted bone sites compared to the phosphate-buffered saline control. In summary, weekly NELL-PEG injection via IP administration successfully enhanced the overall bone quality. These findings demonstrate that systemic delivery of NELL-PEG via IP administration may serve as an effective osteogenic therapy for preventing and treating osteoporosis.
Collapse
Affiliation(s)
- Justine Tanjaya
- Division of Growth and Development and the Section of Orthodontics, School of Dentistry, University of California , Los Angeles, Los Angeles, California
| | - Yulong Zhang
- Department of Bioengineering, University of California, Los Angeles, Los Angeles, California.; Department of Materials Science and Engineering, University of California, Los Angeles, Los Angeles, California
| | - Soonchul Lee
- Department of Orthopaedic Surgery, CHA Bundang Medical Center, CHA University, Pocheon, South Korea.; Department of Orthopaedic Surgery and the Orthopaedic Hospital Research Center, University of California, Los Angeles, Los Angeles, California
| | - Jiayu Shi
- Division of Growth and Development and the Section of Orthodontics, School of Dentistry, University of California , Los Angeles, Los Angeles, California
| | - Eric Chen
- Division of Growth and Development and the Section of Orthodontics, School of Dentistry, University of California , Los Angeles, Los Angeles, California
| | - Pia Ang
- Division of Growth and Development and the Section of Orthodontics, School of Dentistry, University of California, Los Angeles, Los Angeles, California.; Department of Orthopaedic Surgery and the Orthopaedic Hospital Research Center, University of California, Los Angeles, Los Angeles, California
| | - Xinli Zhang
- Division of Growth and Development and the Section of Orthodontics, School of Dentistry, University of California , Los Angeles, Los Angeles, California
| | - Sotirios Tetradis
- Section of Oral and Maxillofacial Radiology, School of Dentistry, University of California , Los Angeles, Los Angeles, California
| | - Kang Ting
- Division of Growth and Development and the Section of Orthodontics, School of Dentistry, University of California, Los Angeles, Los Angeles, California.; Department of Orthopaedic Surgery and the Orthopaedic Hospital Research Center, University of California, Los Angeles, Los Angeles, California
| | - Benjamin Wu
- Department of Bioengineering, University of California, Los Angeles, Los Angeles, California.; Department of Materials Science and Engineering, University of California, Los Angeles, Los Angeles, California
| | - Chia Soo
- Department of Orthopaedic Surgery and the Orthopaedic Hospital Research Center, University of California, Los Angeles, Los Angeles, California.; Division of Plastic and Reconstructive Surgery, Department of Surgery, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, California
| | - Jin Hee Kwak
- Division of Growth and Development and the Section of Orthodontics, School of Dentistry, University of California , Los Angeles, Los Angeles, California
| |
Collapse
|
10
|
Schmidt R, Ostorházi E, Wende E, Knappe D, Hoffmann R. Pharmacokinetics and in vivo efficacy of optimized oncocin derivatives. J Antimicrob Chemother 2016; 71:1003-11. [PMID: 26832757 DOI: 10.1093/jac/dkv454] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2015] [Accepted: 11/24/2015] [Indexed: 11/14/2022] Open
Abstract
OBJECTIVES To evaluate the efficacy of antimicrobial peptide Onc112 in a lethal Escherichia coli infection model and the pharmacokinetics of Onc72 and Onc112 administered intravenously or intraperitoneally in mice. METHODS Onc72, Onc112 and their major metabolites in blood, kidneys, liver, brain and urine were quantified by MS using multiple reaction monitoring (MRM) and isotope-labelled peptides. RESULTS Onc112 rescued all animals when administered intraperitoneally at a dose of 2.5 mg/kg and was thus slightly more efficient than Onc72. The MRM method provided limits of quantification in plasma, urine and kidney, liver and brain homogenates of 7-80 μg/L, well below the MICs of 2-4 mg/L. Onc72 and Onc112 reached all organs within 10 min when administered intraperitoneally (5 mg/kg). Their initial concentrations in plasma were 11.9 and 22.6 mg/L, respectively, with elimination t1/2 values of ∼14 and 21 min. The peptide concentrations in blood remained above their MICs for 20 min for Onc72 and 80 min for Onc112. The highest peptide concentrations were detected in kidney homogenates, which also contained the highest content of metabolites, indicating, together with the results from analysis of urine samples, that both peptides are cleared through the kidneys. CONCLUSIONS Onc72 and Onc112 reach organs, including the brain, within 10 min after intravenous and intraperitoneal administration. Onc112 remained in blood at concentrations above its MIC for 80 min. The pharmacokinetic profiles explain the high in vivo efficacies in models of systemic infection and indicate the potential use of these agents for the treatment of urinary tract infections.
Collapse
Affiliation(s)
- Rico Schmidt
- Institute of Bioanalytical Chemistry, Faculty of Chemistry and Mineralogy, Universität Leipzig, Leipzig, Germany Center for Biotechnology and Biomedicine, Universität Leipzig, Leipzig, Germany
| | - Eszter Ostorházi
- Institute of Medical Microbiology, Semmelweis University, Budapest, Hungary Institute of Laboratory Medicine, Semmelweis University, Budapest, Hungary
| | - Elisabeth Wende
- Institute of Bioanalytical Chemistry, Faculty of Chemistry and Mineralogy, Universität Leipzig, Leipzig, Germany Center for Biotechnology and Biomedicine, Universität Leipzig, Leipzig, Germany
| | - Daniel Knappe
- Institute of Bioanalytical Chemistry, Faculty of Chemistry and Mineralogy, Universität Leipzig, Leipzig, Germany Center for Biotechnology and Biomedicine, Universität Leipzig, Leipzig, Germany
| | - Ralf Hoffmann
- Institute of Bioanalytical Chemistry, Faculty of Chemistry and Mineralogy, Universität Leipzig, Leipzig, Germany Center for Biotechnology and Biomedicine, Universität Leipzig, Leipzig, Germany
| |
Collapse
|
11
|
Albarellos GA, Montoya L, Lorenzini PM, Passini SM, Lupi MP, Landoni MF. Pharmacokinetics of cefuroxime after intravenous, intramuscular, and subcutaneous administration to dogs. J Vet Pharmacol Ther 2015; 39:40-4. [DOI: 10.1111/jvp.12239] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2014] [Accepted: 04/22/2015] [Indexed: 11/27/2022]
Affiliation(s)
- G. A. Albarellos
- Cátedra de Farmacología; Facultad de Ciencias Veterinarias; Universidad de Buenos Aires; Buenos Aires Argentina
| | - L. Montoya
- Cátedra de Farmacología; Facultad de Ciencias Veterinarias; Universidad de Buenos Aires; Buenos Aires Argentina
| | - P. M. Lorenzini
- Cátedra de Farmacología; Facultad de Ciencias Veterinarias; Universidad de Buenos Aires; Buenos Aires Argentina
| | - S. M. Passini
- Cátedra de Farmacología; Facultad de Ciencias Veterinarias; Universidad de Buenos Aires; Buenos Aires Argentina
| | - M. P. Lupi
- Cátedra de Farmacología; Facultad de Ciencias Veterinarias; Universidad de Buenos Aires; Buenos Aires Argentina
| | - M. F. Landoni
- Cátedra de Farmacología; Facultad de Ciencias Veterinarias; Universidad Nacional de La Plata; Buenos Aires Argentina
| |
Collapse
|
12
|
Zhao L, Li Q, Zhu H, Chen X, Bi K. Determination of cefuroxime lysine in rat brain microdialysates by ultra-fast liquid chromatography with UV and tandem mass spectrometry: application to an acute toxicokinetic study. Biomed Chromatogr 2014; 28:1199-204. [DOI: 10.1002/bmc.3145] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2013] [Revised: 12/14/2013] [Accepted: 01/04/2014] [Indexed: 11/11/2022]
Affiliation(s)
- Longshan Zhao
- School of Pharmacy; Shenyang Pharmaceutical University; 110016 Shenyang China
| | - Qing Li
- School of Pharmacy; Shenyang Pharmaceutical University; 110016 Shenyang China
| | - Heyun Zhu
- School of Pharmacy; Shenyang Pharmaceutical University; 110016 Shenyang China
| | - Xiaohui Chen
- School of Pharmacy; Shenyang Pharmaceutical University; 110016 Shenyang China
| | - Kaishun Bi
- School of Pharmacy; Shenyang Pharmaceutical University; 110016 Shenyang China
| |
Collapse
|
13
|
Zheng QS, Li LJ. Pharmacometrics: a quantitative tool of pharmacological research. Acta Pharmacol Sin 2012; 33:1337-8. [PMID: 23128515 DOI: 10.1038/aps.2012.149] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
|