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Schimites PI, Martins LR, Teixeira LG, Tomio J, Segat H, Baccin P, Lisboa APB, de Andrade CM, de Oliveira JS, Dornelles GL, Engelmann AM, de Oliveira RB, Benetti LC, Soares AV. Influence of the Dose and Frequency of Administration of Tramadol on Analgesia, Hematological, Biochemical Parameters, and Oxidative Status of Cats Undergoing Ovariohysterectomy. Top Companion Anim Med 2023; 55:100801. [PMID: 37423381 DOI: 10.1016/j.tcam.2023.100801] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2022] [Revised: 04/05/2023] [Accepted: 07/05/2023] [Indexed: 07/11/2023]
Abstract
This study aimed to evaluate the effects of the repeated administration of tramadol subcutaneously on postoperative analgesia, liver, kidneys, and oxidative status in the postoperative period of cats undergoing ovariohysterectomy. Thirty-seven cats were randomly assigned to 5 groups, according to the postoperative analgesic treatment: NaCl 0.9%, GC; tramadol at 2 mg/kg, T2B (q12h) and T2T (q8h); or 4 mg/kg, T4B (q12h) and T4T (q8h). Oxidative status was assessed at baseline, 12 hours and 24 hours after the final administration of tramadol by the activity of superoxide dismutase (SOD), catalase (CAT), myeloperoxidase (MPO), butyrylcholinesterase (BuChE), and lipoperoxidation (MDA). Total blood count, serum biochemistry and urinalysis were compared between baseline and 12 hours posttramadol. Postoperative pain was evaluated by applying the Glasgow Feline Composite Measure Pain Scale at baseline, 3 (T3), 6 (T6), 8 (T8), 12 (T12), 24 (T24) e 36 (T36) hours after extubation. No side effects were observed. Tramadol increased SOD activity while CAT varied among groups in all time points but not over time. MDA levels increased from baseline to 12 hours in all groups but T4T. MPO activity decreased from baseline to 24 hours in some groups, including GC. Creatinine and phosphatase alkaline decreased in T2T, T4B, and T4T at 12 hours. Higher pain scores were observed from T3 to T8, except for GC. Rescue analgesia was administered only at T3. No difference in pain scores was observed from T8 onwards. Based on the findings, it is suggested that tramadol at 2 mg/kg every 8 hours is recommended for postoperative analgesia of cats undergoing ovariohysterectomy.
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Affiliation(s)
- Paula Ivanir Schimites
- Department of Small Animal Clinics, Graduate Program in Veterinary Medicine, Universidade Federal de Santa Maria, Santa Maria, RS, Brazil.
| | - Leticia Reginato Martins
- Department of Small Animal Clinics, Graduate Program in Veterinary Medicine, Universidade Federal de Santa Maria, Santa Maria, RS, Brazil
| | - Luciana Gonçalves Teixeira
- Department of Small Animal Clinics, Graduate Program in Veterinary Science, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil
| | - Jessica Tomio
- Department of Small Animal Clinics, Graduate Program in Veterinary Medicine, Universidade Federal de Santa Maria, Santa Maria, RS, Brazil
| | - Hecson Segat
- Department of Small Animal Clinics, Veterinary Medicine College, Universidade Federal de Santa Maria, Santa Maria, RS, Brazil
| | - Pery Baccin
- Department of Small Animal Clinics, Veterinary Medicine College, Universidade Federal de Santa Maria, Santa Maria, RS, Brazil
| | - Ana Paula Backes Lisboa
- Department of Small Animal Clinics, Veterinary Medicine College, Universidade Federal de Santa Maria, Santa Maria, RS, Brazil
| | - Cinthia Melazzo de Andrade
- Toxicological biochemistry, Graduate Program in Biological Sciences: Toxicological biochemistry, Universidade Federal de Santa Maria, Santa Maria, RS, Brazil
| | - Juliana Sorraila de Oliveira
- Toxicological biochemistry, Graduate Program in Biological Sciences: Toxicological biochemistry, Universidade Federal de Santa Maria, Santa Maria, RS, Brazil
| | - Guilherme Lopes Dornelles
- Department of Small Animal Clinics, Graduate Program in Veterinary Medicine, Universidade Federal de Santa Maria, Santa Maria, RS, Brazil
| | - Ana Martiele Engelmann
- Department of Small Animal Clinics, Graduate Program in Veterinary Medicine, Universidade Federal de Santa Maria, Santa Maria, RS, Brazil
| | - Renan Bonotto de Oliveira
- Department of Small Animal Clinics, Graduate Program in Veterinary Medicine, Universidade Federal de Santa Maria, Santa Maria, RS, Brazil
| | - Laura Camerini Benetti
- Department of Small Animal Clinics, Veterinary Medicine College, Universidade Federal de Santa Maria, Santa Maria, RS, Brazil
| | - André Vasconcelos Soares
- Department of Small Animal Clinics, Graduate Program in Veterinary Medicine, Universidade Federal de Santa Maria, Santa Maria, RS, Brazil
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Zhang Y, Zeng M, Li B, Zhang B, Cao B, Wu Y, Ye S, Xu R, Zheng X, Feng W. Ephedra Herb extract ameliorates adriamycin-induced nephrotic syndrome in rats via the CAMKK2/AMPK/mTOR signaling pathway. Chin J Nat Med 2023; 21:371-382. [PMID: 37245875 DOI: 10.1016/s1875-5364(23)60454-6] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2022] [Indexed: 05/30/2023]
Abstract
This study aimed to investigate the effect and mechanisms of Ephedra Herb (EH) extract on adriamycin-induced nephrotic syndrome (NS), providing an experimental basis for the clinical treatment of NS. Hematoxylin and eosin staining, creatinine, urea nitrogen, and kidn injury molecule-1 were used to evaluate the activities of EH extract on renal function. The levels of inflammatory factors and oxidative stress were detected by kits. The levels of reactive oxygen species, immune cells, and apoptosis were measured by flow cytometry. A network pharmacological approach was used to predict the potential targets and mechanisms of EH extract in the treatment of NS. The protein levels of apoptosis-related proteins and CAMKK2, p-CAMKK2, AMPK, p-AMPK, mTOR and p-mTOR in the kidneys were detected by Western blot. The effective material basis of EH extract was screened by MTT assay. The AMPK pathway inhibitor (compound C, CC) was added to investigate the effect of the potent material basis on adriamycin-induced cell injury. EH extract significantly improved renal injury and relieve inflammation, oxidative stress, and apoptosis in rats. Network pharmacology and Western blot results showed that the effect of EH extract on NS may be associated with the CAMKK2/AMPK/mTOR signaling pathway. Moreover, methylephedrine significantly ameliorated adriamycin-induced NRK-52e cell injury. Methylephedrine also significantly improved the phosphorylation of AMPK and mTOR, which were blocked by CC. In sum, EH extract may ameliorate renal injury via the CAMKK2/AMPK/mTOR signaling pathway. Moreover, methylephedrine may be one of the material bases of EH extract.
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Affiliation(s)
- Yuhan Zhang
- College of Pharmacy, Henan University of Chinese Medicine, Zhengzhou 450000, China; The Engineering and Technology Center for Chinese Medicine Development of Henan province, Zhengzhou 450000, China
| | - Mengnan Zeng
- College of Pharmacy, Henan University of Chinese Medicine, Zhengzhou 450000, China; The Engineering and Technology Center for Chinese Medicine Development of Henan province, Zhengzhou 450000, China; Co-construction Collaborative Innovation Center for Chinese Medicine and Respiratory Diseases by Henan & Education Ministry of P.R., Zhengzhou 450000, China
| | - Benke Li
- College of Pharmacy, Henan University of Chinese Medicine, Zhengzhou 450000, China; The Engineering and Technology Center for Chinese Medicine Development of Henan province, Zhengzhou 450000, China
| | - Beibei Zhang
- College of Pharmacy, Henan University of Chinese Medicine, Zhengzhou 450000, China; The Engineering and Technology Center for Chinese Medicine Development of Henan province, Zhengzhou 450000, China
| | - Bing Cao
- College of Pharmacy, Henan University of Chinese Medicine, Zhengzhou 450000, China; The Engineering and Technology Center for Chinese Medicine Development of Henan province, Zhengzhou 450000, China
| | - Yuanyuan Wu
- College of Pharmacy, Henan University of Chinese Medicine, Zhengzhou 450000, China; The Engineering and Technology Center for Chinese Medicine Development of Henan province, Zhengzhou 450000, China
| | - Shan Ye
- College of Pharmacy, Henan University of Chinese Medicine, Zhengzhou 450000, China; The Engineering and Technology Center for Chinese Medicine Development of Henan province, Zhengzhou 450000, China
| | - Ruiqi Xu
- College of Pharmacy, Henan University of Chinese Medicine, Zhengzhou 450000, China; The Engineering and Technology Center for Chinese Medicine Development of Henan province, Zhengzhou 450000, China
| | - Xiaoke Zheng
- College of Pharmacy, Henan University of Chinese Medicine, Zhengzhou 450000, China; The Engineering and Technology Center for Chinese Medicine Development of Henan province, Zhengzhou 450000, China; Co-construction Collaborative Innovation Center for Chinese Medicine and Respiratory Diseases by Henan & Education Ministry of P.R., Zhengzhou 450000, China.
| | - Weisheng Feng
- College of Pharmacy, Henan University of Chinese Medicine, Zhengzhou 450000, China; The Engineering and Technology Center for Chinese Medicine Development of Henan province, Zhengzhou 450000, China; Co-construction Collaborative Innovation Center for Chinese Medicine and Respiratory Diseases by Henan & Education Ministry of P.R., Zhengzhou 450000, China.
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Shi J, Li W, Tao R, Zhou D, Guo Y, Fu H, Sun A, Zhang J, Mao J. Association of Catalase Gene Polymorphisms with Idiopathic Nephrotic Syndrome in a Chinese Pediatric Population. Lab Med 2023; 54:35-40. [PMID: 35964233 DOI: 10.1093/labmed/lmac062] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023] Open
Abstract
OBJECTIVE Our aim was to investigate the association between gene polymorphisms in catalase (CAT), a well-known oxidative stress regulator, and susceptibility to idiopathic nephrotic syndrome (INS) or responses to steroid therapy in a Chinese pediatric population. METHODS We analyzed 3 CAT single-nucleotide polymorphisms (SNVs; rs7943316, rs769217, and rs12270780) using multi-polymerase chain reaction combined with next-generation sequencing in 183 INS patients and 100 healthy controls. RESULTS For the allele and genotype frequencies of the CAT SNVs, no significant differences were observed between INS patients and controls. Patients with C allele of CAT rs769217 had a higher risk of developing steroid-dependent nephrotic syndrome than the steroid-sensitive nephrotic syndrome patients (P = 0.018; odds ratio = 1.76). CONCLUSION Our data suggests that genetic variations in CAT were unlikely to confer susceptibility to INS in Chinese children, whereas the C allele of the CAT rs769217 polymorphism showed a strong association with steroid-dependent responses in Chinese INS children.
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Affiliation(s)
- Jianrong Shi
- Department of Clinical Laboratory, The Children's Hospital, Zhejiang University School of Medicine, National Clinical Research Center For Child Health, Hangzhou, China
| | - Wei Li
- Department of Clinical Laboratory, The Children's Hospital, Zhejiang University School of Medicine, National Clinical Research Center For Child Health, Hangzhou, China
| | - Ran Tao
- Department of Clinical Laboratory, The Children's Hospital, Zhejiang University School of Medicine, National Clinical Research Center For Child Health, Hangzhou, China
| | - Dongming Zhou
- Department of Clinical Laboratory, The Children's Hospital, Zhejiang University School of Medicine, National Clinical Research Center For Child Health, Hangzhou, China
| | - Yajun Guo
- Department of Clinical Laboratory, The Children's Hospital, Zhejiang University School of Medicine, National Clinical Research Center For Child Health, Hangzhou, China
| | - Haidong Fu
- Department of Nephrology, The Children's Hospital, Zhejiang University School of Medicine, National Clinical Research Center For Child Health, Hangzhou, China
| | - Anna Sun
- Department of Clinical Laboratory, The Children's Hospital, Zhejiang University School of Medicine, National Clinical Research Center For Child Health, Hangzhou, China
| | - Junfeng Zhang
- Department of Clinical Laboratory, The Children's Hospital, Zhejiang University School of Medicine, National Clinical Research Center For Child Health, Hangzhou, China
| | - Jianhua Mao
- Department of Nephrology, The Children's Hospital, Zhejiang University School of Medicine, National Clinical Research Center For Child Health, Hangzhou, China
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Yin J, Lin J, Yu J, Wei X, Zhu B, Zhu C. Tetrandrine may treat membranous glomerulopathy via P13K/Akt signaling pathway regulation: therapeutic mechanism validation using Heymann nephritis rat model. Bioengineered 2021; 12:6499-6515. [PMID: 34463195 PMCID: PMC8806448 DOI: 10.1080/21655979.2021.1973862] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
Membranous glomerulopathy (MGN) is an autoimmune kidney disease that is the primary cause of nephrotic syndrome (NS) in adults. Tetrandrine, a bisbenzylisoquinoline alkaloid, is known to have numerous pharmacological effects. In this study, network pharmacology analysis and experimental validation were conducted to analyze the mechanisms by which tetrandrine functions as a therapeutic intervention for MGN. A systematic network pharmacology method was applied to identify potential targets and determine the therapeutic mechanism of tetrandrine in MGN treatment. A Heymann nephritis (HN) rat model was developed to assess the therapeutic effects of tetrandrine on NS and validate the predicted molecular mechanisms. We obtained 86 potential targets of tetrandrine for the treatment of NS. In vivo experiments showed that tetrandrine could reduce the 24-h urine protein content, decrease glomerular basement membrane proliferation, and significantly decrease thylakoid stroma and cell proliferation in the HN rat kidney tissue. Moreover, tetrandrine suppressed kidney cell apoptosis and upregulated the expression of nephrin and podocin in HN model rats. qRT-PCR results revealed that tetrandrine inhibited IL-1β, TNFα, and MCP-1 levels in HN model rats. Western blot results indicated that tetrandrine can protect against MGN via the PI3K/Akt signaling pathway. Thus, by using a combination of network and experimental pharmacology methods, we demonstrate that tetrandrine can treat MGN via the PI3K/Akt signaling pathway and provide novel insights into the mechanisms underlying tetrandrine-mediated management of MGN.
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Affiliation(s)
- Jiazhen Yin
- Department of Nephrology, Hangzhou Tcm Hospital Affiliated of Zhejiang Chinese Medical University, Hangzhou, Zhejiang, China
| | - Jiazhen Lin
- School of Clinical Medicine, Zhejiang Chinese Medical University, Hangzhou, Zhejiang, China
| | - Jin Yu
- Department of Nephrology, Hangzhou Tcm Hospital Affiliated of Zhejiang Chinese Medical University, Hangzhou, Zhejiang, China
| | - Xia Wei
- Department of Gastroenterology, Hangzhou Tcm Hospital Affiliated of Zhejiang Chinese Medical University, Hangzhou, Zhejiang, China
| | - Bin Zhu
- Department of Nephrology, Hangzhou Tcm Hospital Affiliated of Zhejiang Chinese Medical University, Hangzhou, Zhejiang, China
| | - Caifeng Zhu
- Department of Nephrology, Hangzhou Tcm Hospital Affiliated of Zhejiang Chinese Medical University, Hangzhou, Zhejiang, China
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Yılmaz K, Çakırca G, Erel Ö. Impaired thiol/disulphide homoeostasis in children with steroid-sensitive nephrotic syndrome. Int J Clin Pract 2021; 75:e13794. [PMID: 33113265 DOI: 10.1111/ijcp.13794] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/30/2020] [Accepted: 10/17/2020] [Indexed: 11/29/2022] Open
Abstract
BACKGROUND Abnormal thiol/disulphide homoeostasis (TDH) is responsible for the pathogenesis of various diseases. We aimed to examine the TDH in children with steroid-sensitive nephrotic syndrome (SSNS). METHODS A total of 131 children, 60 with SSNS and 71 healthy controls, participated in the study. Plasma total thiol (TT), native thiol (SH) and disulphide (SS) levels in the SSNS during remission and control groups were estimated using a new method developed by Erel and Neselioglu. RESULTS Albumin, TT, SH levels and SH/TT ratio were decreased, whereas SS/SH and SS/TT ratios were elevated in SSNS group compared with control group. However, there was no significant difference in SS levels between the two groups. Albumin level was positively correlated with TT, SH and SS levels in the SSNS group. CONCLUSIONS We found that TDH shifts in favour of oxidants in children with SSNS in remission. This shift indicates that SSNS patients are exposed to augmented oxidative stress.
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Affiliation(s)
- Kenan Yılmaz
- Department of Pediatric Nephrology, Sanliurfa Training and Research Hospital, Sanliurfa, Turkey
| | - Gökhan Çakırca
- Department of Biochemistry, Sanliurfa Mehmet Akif Inan Training and Research Hospital, Sanliurfa, Turkey
| | - Özcan Erel
- Biochemistry, Ankara Yildirim Beyazit University Faculty of Medicine, Ankara
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Cakirca G, Guzelcicek A, Yilmaz K, Nas C. Increased ischemia-modified albumin levels in children with steroid-sensitive nephrotic syndrome. Pak J Med Sci 2020; 36:1490-1494. [PMID: 33235562 PMCID: PMC7674859 DOI: 10.12669/pjms.36.7.2924] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
Abstract
Objective: Growing evidence shows that oxidative stress plays an important role in the development and progression of nephrotic syndrome (NS). In this study, we aimed to examine serum IMA levels as an indicator of oxidative stress in children with steroid-sensitive NS (SSNS) in remission and relapse. Methods: This cross-sectional study was carried out at the Pediatric Nephrology Unit of Sanliurfa Training and Research Hospital, Sanliurfa, Turkey, from April 2019 to December 2019. In this study Serum IMA and albumin levels were determined in 70 children with SSNS and 45 healthy controls. Among the children with SSNS, 50 were in remission and 20 were in relapse. Then, adjusted IMA levels were calculated from the IMA/albumin ratio. Results: IMA and adjusted IMA levels significantly increased and albumin significantly decreased in children with SSNS in relapse and remission compared with those of the healthy controls. Moreover, these alterations were more prominent in the relapse group than in the remission group. IMA was inversely correlated with albumin in children with SSNS (r= −0.881, p= <0.001). Conclusions: Our findings demonstrated that elevated IMA and adjusted IMA levels observed in patients with SSNS were associated with increased oxidative stress and could indirectly reflect the degree of oxidative damage in glomerular structures.
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Affiliation(s)
- Gokhan Cakirca
- Gokhan Cakirca, Department of Biochemistry, Sanliurfa Mehmet Akif Inan Training and Research Hospital, Sanliurfa, Turkey
| | - Ahmet Guzelcicek
- Ahmet Guzelcicek, Department of Pediatrics, Faculty of Medicine, Harran University, Sanliurfa, Turkey
| | - Kenan Yilmaz
- Kenan Yilmaz, Department of Pediatric Nephrology, Sanliurfa Training and Research Hospital, Sanliurfa, Turkey
| | - Cemal Nas
- Cemal Nas, Department of Biochemistry, Sanliurfa Training and Research Hospital, Sanliurfa, Turkey
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Teixeira LG, Martins LR, Schimites PI, Dornelles GL, Aiello G, Oliveira JS, da Silva FC, Brum BTS, Walter TMC, Andrade CM, Soares AV. Evaluation of postoperative pain and toxicological aspects of the use of dipyrone and tramadol in cats. J Feline Med Surg 2020; 22:467-475. [PMID: 31112057 PMCID: PMC10814344 DOI: 10.1177/1098612x19849969] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
OBJECTIVES The aim of this study was to evaluate the effects of dipyrone and tramadol, used for 5 days, on postoperative pain, hematological and biochemical parameters, and oxidative markers on erythrocytes. METHODS Twenty-eight healthy cats underwent ovariohysterectomy and were randomly allocated to four groups (each n = 7), according to the postoperative treatment administered intravenously: control (saline 1 ml q8h), DIP1 (dipyrone 25 mg/kg q24h), DIP2 (dipyrone 25 mg/kg q12h) and DIP3 (dipyrone 25 mg/kg q8h). All animals received tramadol (2 mg/kg q8h). Pain was assessed by visual analog (VAS), multidimensional UNESP and Glasgow pain scales for cats preoperatively and at 3, 6, 12, 24, 36 and 48 h after extubation. Venous blood was collected daily for 5 days, and on day 10, to perform a complete blood count (CBC) and determine the percentage of Heinz bodies (HBs). Serum biochemistry was evaluated preoperatively and on days 5 and 10; superoxide dismutase (SOD), catalase (CAT), myeloperoxidase (MPO) and lipoperoxidation were evaluated preoperatively and on days 3, 5 and 10. RESULTS Control cats had higher pain scores than DIP3 cats by UNESP (P = 0.0065), and DIP2 (P = 0.0035) and DIP3 cats (P = 0.0108) by VAS 3 h postoperatively. Rescue analgesia was required by two animals in the control group and one each in the DIP1 and DIP2 groups. There was no difference in SOD or CAT among groups. On day 5, MPO was more active in DIP2 than in DIP3 cats (P = 0.0274). No difference in lipoperoxidation among treatment and control cats was found. CBC remained constant and without statistical difference among groups. Control, DIP2 and DIP3 cats presented a similar percentage of HBs on day 10. Biochemical variables were similar among groups and times. CONCLUSIONS AND RELEVANCE The administration of dipyrone in cats, when used in combination with tramadol, did not ensure better analgesia than tramadol alone. Dipyrone did not significantly affect biochemical variables and oxidative markers, despite minimal, clinically irrelevant, hematological differences between groups.
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Affiliation(s)
- Luciana G Teixeira
- Graduate Program in Veterinary Science, Federal University of Rio Grande do Sul, Porto Alegre, RS, Brazil
| | - Letícia R Martins
- Graduate Program in Veterinary Surgery and Clinics, Federal University of Santa Maria, RS, Brazil
| | - Paula I Schimites
- Graduate Program in Veterinary Surgery and Clinics, Federal University of Santa Maria, RS, Brazil
| | - Guilherme L Dornelles
- Graduate Program in Veterinary Surgery and Clinics, Federal University of Santa Maria, RS, Brazil
| | - Graciane Aiello
- Graduate Program in Veterinary Surgery and Clinics, Federal University of Santa Maria, RS, Brazil
| | - Juliana S Oliveira
- Graduate Program in Biological Sciences: Toxicological Biochemistry, Federal University of Santa Maria, RS, Brazil
| | - Filipe C da Silva
- Veterinary Medicine College, Federal University of Santa Maria, RS, Brazil
| | - Bárbara TS Brum
- Veterinary Medicine College, Federal University of Santa Maria, RS, Brazil
| | - Thais MC Walter
- Veterinary Medicine College, Federal University of Santa Maria, RS, Brazil
| | - Cinthia M Andrade
- Department of Small Animal Clinics, Federal University of Santa Maria, RS, Brazil
| | - André V Soares
- Department of Small Animal Clinics, Federal University of Santa Maria, RS, Brazil
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1-O-alkyl glycerophosphate-induced CD36 expression drives oxidative stress in microglial cells. Cell Signal 2020; 65:109459. [DOI: 10.1016/j.cellsig.2019.109459] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2019] [Revised: 10/22/2019] [Accepted: 10/24/2019] [Indexed: 11/17/2022]
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Al-Eisa A, Dhaunsi GS. NOX-mediated impairment of PDGF-induced DNA synthesis in peripheral blood lymphocytes of children with idiopathic nephrotic syndrome. Pediatr Res 2017; 82:629-633. [PMID: 28613279 DOI: 10.1038/pr.2017.122] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/28/2016] [Accepted: 04/15/2017] [Indexed: 11/09/2022]
Abstract
BackgroundCellular oxidative stress, inflammatory responses, and immunogenic events are involved in pathogenesis of idiopathic nephrotic syndrome (INS); however, the exact mechanism remains unknown. We examined NADPH oxidase (NOX) activity and platelet-derived growth factor (PDGF)-induced DNA synthesis in peripheral blood lymphocytes (PBL) of patients with INS.MethodsPBL from 15 patients with INS and 15 age- and gender-matched controls were isolated, and enzyme activities of NOX, catalase, and superoxide dismutase (SOD) were measured along with the assay of malondialdehyde levels and bromo-deoxyuridine incorporation. Protein expression of NOX-1 was measured using western blot analysis.ResultsPatients with INS had significantly (P<0.01) higher NOX activity and increased protein expression of NOX-1 in PBL as compared with controls. Catalase and SOD activities were markedly lower with lipid peroxide levels significantly (P<0.01) increased in patients with INS. Ex vivo DNA synthesis in PDGF-stimulated PBL was significantly (P<0.01) reduced in patients with INS; however, diphenyliodonium, an inhibitor of NOX, markedly corrected impairment in growth factor-induced BrdU incorporation.ConclusionsThese results show that NOX activation might have a role in regulation of lymphocytic activity in patients with INS through the impairment of PDGF mitogenic function and might contribute toward pathogenesis of nephrotic syndrome.
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Affiliation(s)
- Amal Al-Eisa
- Department of Pediatrics, Faculty of Medicine, Kuwait University, Jabriya, Kuwait
| | - Gursev S Dhaunsi
- Department of Pediatrics, Faculty of Medicine, Kuwait University, Jabriya, Kuwait
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Yao F, Abdel-Rahman AA. Combined Catalase and ADH Inhibition Ameliorates Ethanol-Induced Myocardial Dysfunction Despite Causing Oxidative Stress in Conscious Female Rats. Alcohol Clin Exp Res 2017; 41:1541-1550. [PMID: 28667748 DOI: 10.1111/acer.13442] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2017] [Accepted: 06/24/2017] [Indexed: 01/15/2023]
Abstract
BACKGROUND Ethanol (EtOH)-evoked oxidative stress, which contributes to myocardial dysfunction in proestrus rats, is mediated by increases in NADPH oxidase (Nox) activity, malondialdehyde (MDA), and ERK1/2 phosphorylation. Whether these biochemical responses, which are triggered by alcohol-derived acetaldehyde in noncardiac tissues, occur in proestrus rats' hearts remains unknown. Therefore, we elucidated the roles of alcohol dehydrogenase (ADH), cytochrome P4502E1 (CYP2E1), and catalase, which catalyze alcohol oxidation to acetaldehyde, in these alcohol-evoked biochemical and hemodynamic responses in proestrus rats. METHODS Conscious proestrus rats prepared for measurements of left ventricular (LV) function and blood pressure (BP) received EtOH (1.5 g/kg, intravenous [i.v.] infusion over 30 minutes) or saline 30 minutes after an ADH and CYP2E1 inhibitor, 4-methylpyrazole (4-MP) (82 mg/kg, intraperitoneal), a catalase inhibitor, 3-AT (0.5 g/kg, i.v.), their combination, or vehicle. LV function and BP were monitored for additional 60 minutes after EtOH or saline infusion before collecting the hearts for ex vivo measurements of LV reactive oxygen species (ROS), Nox activity, MDA, and ERK1/2 phosphorylation. RESULTS EtOH reduced LV function (dP/dtmax and LV developed pressure) and BP, and increased cardiac Nox activity, ROS and MDA levels, and ERK1/2 phosphorylation. Either inhibitor partially, and their combination significantly, attenuated these responses despite the substantially higher blood EtOH level, and the increased cardiac oxidative stress and reduced BP caused by 3-AT alone or with 4-MP. The inhibitors reduced cardiac MDA level and reversed EtOH effect on cardiac and plasma MDA. CONCLUSIONS EtOH oxidative metabolism plays a pivotal role in the EtOH-evoked LV oxidative stress and dysfunction in proestrus rats. Notably, catalase inhibition (3-AT) caused cardiac oxidative stress and hypotension.
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Affiliation(s)
- Fanrong Yao
- Department of Pharmacology & Toxicology (FY, AAA-R), Brody School of Medicine, East Carolina University, Greenville, North Carolina
| | - Abdel A Abdel-Rahman
- Department of Pharmacology & Toxicology (FY, AAA-R), Brody School of Medicine, East Carolina University, Greenville, North Carolina
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Hanff E, Eisenga MF, Beckmann B, Bakker SJL, Tsikas D. Simultaneous pentafluorobenzyl derivatization and GC-ECNICI-MS measurement of nitrite and malondialdehyde in human urine: Close positive correlation between these disparate oxidative stress biomarkers. J Chromatogr B Analyt Technol Biomed Life Sci 2016; 1043:167-175. [PMID: 27461359 DOI: 10.1016/j.jchromb.2016.07.027] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2016] [Revised: 07/05/2016] [Accepted: 07/15/2016] [Indexed: 01/08/2023]
Abstract
Urinary nitrite and malondialdehyde (MDA) are biomarkers of nitrosative and oxidative stress, respectively. At physiological pH values of urine and plasma, nitrite and MDA exist almost entirely in their dissociated forms, i.e., as ONO- (ONOH, pKa=3.4) and -CH(CHO)2 (CH2(CHO)2, pKa=4.5). Previously, we reported that nitrite and MDA react with pentafluorobenzyl (PFB) bromide (PFB-Br) in aqueous acetone. Here, we report on the simultaneous derivatization of nitrite and MDA and their stable-isotope labeled analogs O15NO- (4μM) and CH2(CDO)2 (1μM or 10μM) with PFB-Br (10μL) to PFBNO2, PFB15NO2, C(PFB)2(CHO)2), C(PFB)2(CDO)2 by heating acetonic urine (urine-acetone, 100:400μL) for 60min at 50°C. After acetone evaporation under a stream of nitrogen, derivatives were extracted with ethyl acetate (1mL). A 1-μL aliquot of the ethyl acetate phase dried over anhydrous Na2SO4 was injected in the splitless mode for simultaneous GC-MS analysis in the electron capture negative-ion chemical ionization mode. Quantification was performed by selected-ion monitoring (SIM) the anions [M-PFB]-m/z 46 for ONO-, m/z 47 for O15NO-, m/z 251 for -C(PFB)(CHO)2, and m/z 253 for -C(PFB)(CDO)2. The retention times were 3.18min for PFB-ONO2/PFB-O15NO2, and 7.13min for -C(PFB)(CHO)2/-C(PFB)(CDO)2. Use of CH2(CDO)2 at 1μM but not at 10μM was associated with an unknown interference with the C(PFB)2(CDO)2 peak. Endogenous MDA can be quantified using O15NO- (4μM) and CH2(CDO)2 (10μM) as the internal standards. The method is also useful for the measurement of nitrate and creatinine in addition to nitrite and MDA. Nitrite and MDA were measured by this method in urine of elderly healthy subjects (10 females, 9 males; age, 60-70 years; BMI, 25-30kg/m2). Creatinine-corrected excretion rates did not differ between males and females for MDA (62.6 [24-137] vs 80.2 [52-118]nmol/mmol, P=0.448) and for nitrite (102 [71-174] vs. 278 [110-721]nmol/mmol P=0.053). We report for the first time a close correlation (r=0.819, P<0.0001) between MDA and nitrite in human urine. This correlation is assumed to be due to involvement of myeloperoxidase which catalyzes the formation of hypochlorite (-OCl) from chloride and hydrogen peroxide. In turn, hypochlorite reacts both with nitrite and with polyunsaturated fatty acids such as arachidonic acid, with the later reaction generating MDA. The proposed mechanisms are supported by the literature but remain to be fully explored.
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Affiliation(s)
- Erik Hanff
- Centre of Pharmacology and Toxicology, Hannover Medical School, Hannover, Germany
| | - Michele F Eisenga
- Department of Internal Medicine, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
| | - Bibiana Beckmann
- Institute of Occupational Medicine, Hannover Medical School, Hannover, Germany
| | - Stephan J L Bakker
- Department of Internal Medicine, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
| | - Dimitrios Tsikas
- Centre of Pharmacology and Toxicology, Hannover Medical School, Hannover, Germany.
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Naloxone pretreatment prevents kidney injury after liver ischemia reperfusion injury. Int Urol Nephrol 2016; 48:1113-20. [PMID: 27055556 DOI: 10.1007/s11255-016-1280-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2015] [Accepted: 03/26/2016] [Indexed: 01/11/2023]
Abstract
PURPOSE The aim of this study was to assess the effects of naloxone, an opioid receptor antagonist, on the renal injury as a remote organ after hepatic ischemia reperfusion (IR) in rats. MATERIALS AND METHODS Forty male Wistar rats were randomly allocated into four groups as follows: sham, sham + naloxone, IR and IR + naloxone. In anesthetized rats, hepatic ischemia was applied for 30 min in IR and IR + naloxone groups. Sham + naloxone and IR + naloxone groups were given naloxone (3.0 mg/kg, iv) 30 min before ischemia. After 24 h, blood and tissue samples were obtained for histopathological, tissue malondialdehyde (MDA) and biochemical analyses. RESULTS Histopathological study of liver in IR group showed enlarged sinusoids, sinusoidal congestion, cellular degenerative changes and necrosis. The kidney of the rats with hepatic IR showed pathological changes in tubular cell swelling, tubular dilatation, moderate to severe necrosis, glomerular fibrosis and hemorrhage. Histological examination confirmed the extent of hepatic and renal changes in IR group was higher (P < 0.05) than in other groups. Rats that underwent hepatic IR exhibited significant increase in serum concentrations of urea and creatinine levels (P < 0.05). The serum alanine aminotransferase and aminotransferase values were significantly higher in IR group compared to the other groups (P < 0.05). Liver IR produced a significant increase in hepatic and renal tissue MDA levels, while pretreatment with naloxone was associated with a significantly lower MDA levels (P < 0.05). CONCLUSION The results of this study showed that naloxone pretreatment protected the renal injury from hepatic IR.
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Goy B, Atmaca M, Aslan M, Ucler R, Alay M, Seven I, Demir H, Ozturk M. Relationship between serum DHEAS and oxidative stress levels of body mass index in healthy postmenopausal women. Redox Rep 2016; 21:61-6. [PMID: 26024430 PMCID: PMC6837362 DOI: 10.1179/1351000215y.0000000016] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023] Open
Abstract
OBJECTIVES Menopause is a natural step in the process of aging. Postmenopausal women have decreased levels of antioxidants and increased oxidative stress, the latter of which plays an important role in atherogenesis. The aim of the present study was to evaluate the relationship of the body mass index (BMI) with serum catalase activity, malondialdehyde (MDA), and dehydroepiandrosterone sulfate (DHEAS) levels in healthy postmenopausal women and estimate whether the MDA/DHEAS ratio is a possible marker of oxidative stress for determining cardiovascular risk in these women. METHODS We investigated serum catalase activity, MDA, and DHEAS levels, parity history, age, and BMI in 96 healthy postmenopausal women aged 50-82 years. The serum MDA levels and catalase activity were measured spectrophotometrically. The serum DHEAS levels were measured using an enzyme-linked immunosorbent assay. The ratio percentage of the serum DHEAS levels to serum MDA levels was designated as a biomarker for oxidative stress. RESULTS The mean BMI of the patients was 31.72 ± 6.16 kg/m(2) (range = 20.5-47.94). The MDA/DHEAS ratio was significantly decreased in patients with a BMI over 30 compared to that of patients with a BMI between 25 and 30 (P = 0.025). Moreover, BMI was positively correlated with serum DHEAS levels (r = 0.285, P < 0.01) and negatively correlated with the MDA/DHEAS ratio (r = -0.241, P < 0.05) in postmenopausal women. Furthermore, BMI was observed to be a potential predictor of the MDA/DHEAS ratio based on covariance analysis (P = 0.039). CONCLUSIONS Our results indicate that healthy, obese, postmenopausal women have a decreased MDA/DHEAS ratio. Additionally, BMI was observed to be a potential predictor of the MDA/DHEAS ratio.
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Affiliation(s)
- Burhan Goy
- Department of Internal Medicine, Medical Faculty, Yuzuncu Yil University, Van, Turkey
| | - Murat Atmaca
- Department of Endocrinology and Metabolism, Medical Faculty, Yuzuncu Yil University, Van, Turkey
| | - Mehmet Aslan
- Department of Internal Medicine, Medical Faculty, Yuzuncu Yil University, Van, Turkey
| | - Rıfkı Ucler
- Department of Endocrinology and Metabolism, Medical Faculty, Yuzuncu Yil University, Van, Turkey
| | - Murat Alay
- Department of Endocrinology and Metabolism, Medical Faculty, Yuzuncu Yil University, Van, Turkey
| | - Ismet Seven
- Department of Internal Medicine, Medical Faculty, Yuzuncu Yil University, Van, Turkey
| | - Halit Demir
- Department of Chemistry, Division of Biochemistry, Faculty of Science, Yuzuncu Yil University, Van, Turkey
| | - Mustafa Ozturk
- Department of Endocrinology and Metabolism, Medical Faculty, Medipol University, Istanbul, Turkey
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Souparnika S, D'Souza B, D'Souza V, Kumar S, Manjrekar P, Bairy M, Parthasarathy R, Kosuru S. Emerging Role of Myeloperoxidase in the Prognosis of Nephrotic Syndrome Patients Before and After Steroid Therapy. J Clin Diagn Res 2015; 9:BC01-4. [PMID: 26393116 DOI: 10.7860/jcdr/2015/12532.6222] [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: 12/15/2014] [Accepted: 04/09/2015] [Indexed: 11/24/2022]
Abstract
BACKGROUND Myeloperoxidase (MPO) is a myelocyte derived iron containing enzyme particularly involved in host defense by destroying foreign micro organisms invading the body. Numerous evidences suggest that MPO is involved in the pathogenesis of many inflammatory diseases, especially atherosclerosis. AIM Present study deals with the role of MPO in the renal function and progression of disease in Nephrotic syndrome patients. STUDY DESIGN AND SETTINGS Case- Control Study carried out in Kasturba Medical College Hospital, Mangalore, India. MATERIALS AND METHODS Forty newly diagnosed Nephrotic syndrome cases, 40 age and sex matched healthy controls and 15 subjects in Nephrotic syndrome remission, were included in the study. Myeloperoxidase enzyme was assayed by 4 amino antipyrine methods in all the subjects. Other renal parameters like urea, creatinine, Blood Urea Nitrogen (BUN), BUN- Creatinine ratio (BUN/Cr) total protein, albumin, globulin, albumin - globulin ratio (A/G ratio) and estimated Glomerular Filtration Rate (eGFR) were also analysed. 24 hour urine protein-creatinine ratio was estimated in Nephrotic syndrome cases and remission group by turbidimetric assay. STATISTICAL ANALYSIS Students paired t-test and Wilcoxon Signed Rank test were used for the comparison of the data. Pearson and Spearman analyses were used for correlation of the parameters. RESULTS MPO levels were found to be high in Nephrotic syndrome cases when compared to healthy controls. Urea, creatinine, BUN, BUN/Cr ratio and eGFR were high in Nephrotic syndrome cases while total protein, albumin, globulin and A/G ratio showed decreased levels. MPO had a positive correlation with creatinine and urine protein-creatinine ratio in Nephrotic syndrome. During remission, MPO levels decreased significantly while total protein and albumin levels increased. CONCLUSION Myeloperoxidase enzyme is found to be elevated and it strongly correlated with the severity of disease in Nephrotic syndrome. Further studies can be done to use MPO as a therapeutic target in Nephrotic syndrome to ameliorate the symptoms.
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Affiliation(s)
- Sreelatha Souparnika
- Senior Research Fellow, Department of Biochemistry, Kasturba Medical College , Mangalore, Manipal University, India
| | - Benedicta D'Souza
- Professor, Department of Biochemistry, Kasturba Medical College , Mangalore, Manipal University, India
| | - Vivian D'Souza
- Professor, Department of Biochemistry, Kasturba Medical College , Mangalore, Manipal University, India
| | - Sushanth Kumar
- Associate Professor, Department of Nephrology, Kasturba Medical College , Mangalore, Manipal University, India
| | - Poornima Manjrekar
- Professor and Head, Department of Biochemistry, Kasturba Medical College , Mangalore, Manipal University, India
| | - Manohar Bairy
- Associate Professor, Department of Nephrology, Kasturba Medical College , Mangalore, Manipal University, India
| | | | - Srinivas Kosuru
- Post Graduate, Department of Nephrology, Kasturba Medical College , Mangalore, Manipal University, India
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Levosimendan displays anti-inflammatory effects and decreases MPO bioavailability in patients with severe heart failure. Sci Rep 2015; 5:9704. [PMID: 25867530 PMCID: PMC4394753 DOI: 10.1038/srep09704] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2014] [Accepted: 03/06/2015] [Indexed: 11/09/2022] Open
Abstract
Treatment of decompensated heart failure often includes administration of levosimendan. Myeloperoxidase (MPO) is released during polymorphonuclear neutrophil (PMN) degranulation, and mediates dysregulation of vascular tone in heart failure. We evaluated the effects of levosimendan-treatment on MPO in patients with acute decompensation of chronic heart failure over a one week course. Plasma MPO levels were significantly decreased after levosimendan treatment (from 252.1 ± 31.1 pmol/l at baseline to 215.02 ± 27.96 pmol/l at 6 h, p < 0.05). Ex vivo incubation of whole blood with levosimendan decreased MPO release after PMN-stimulation (8.2 ± 1.4-fold increase at baseline vs. 6.0 ± 1.1-fold increase with levosimendan). MPO levels also significantly correlated with diastolic blood pressure over the time course. In a multivariate linear model, the main contributor to systolic, diastolic and mean blood pressure was level of PMN elastase. MPO contributed only in heparin-treated patients, suggesting a more significant role for endothelial-bound MPO than for circulating MPO or elastase with respect to blood pressure regulation. We here provide the first evidence that levosimendan treatment inhibits MPO release by PMNs in decompensated heart failure patients. This mechanism may regulate endothelial function and vascular tone in heart failure patients.
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Gonullu H, Aslan M, Karadas S, Kati C, Duran L, Milanlioglu A, Aydin MN, Demir H. Serum prolidase enzyme activity and oxidative stress levels in patients with acute hemorrhagic stroke. Scandinavian Journal of Clinical and Laboratory Investigation 2014; 74:199-205. [PMID: 24456419 DOI: 10.3109/00365513.2013.873949] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
BACKGROUND It has been indicated that oxidative damage contributes to secondary brain injury in both ischemic and hemorrhagic stroke patients. Collagen is a major component of the extracellular matrix, and prolidase plays a role in collagen synthesis. The aim of this study was to evaluate the serum prolidase activity, nitric oxide (NO) levels, total antioxidant capacity (TAC) and total oxidant status (TOS) in patients with acute hemorrhagic stroke. METHODS Twenty-five patients with acute hemorrhagic stroke and 25 controls were enrolled. Serum prolidase activity, catalase activity, NO levels, TAC and TOS were measured spectrophotometrically. Oxidative stress index (OSI) was calculated. RESULTS Serum TAC levels and catalase activity were significantly lower in acute hemorrhagic stroke patients than controls (both, p < 0.001), while NO levels, TOS levels, OSI values and prolidase activity were significantly higher (all, p < 0.01). When patients with acute hemorrhagic stroke were divided according to gender, no differences were observed between females and males in respect to serum prolidase enzyme activity, NO levels, TAC levels, TOS levels and OSI values (all, p > 0.05). CONCLUSIONS Findings from the study suggest an association between increased oxidative stress levels, decreased antioxidant levels and increased prolidase enzyme activity in patients with acute hemorrhagic stroke compared with controls. More studies are needed to elucidate mechanistic pathways on oxidative stress in patients with acute hemorrhagic stroke.
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Affiliation(s)
- Hayriye Gonullu
- Department of Emergency Medicine, Yuzuncu Yıl University , Van , Turkey
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