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Georgescu SR, Mitran CI, Mitran MI, Matei C, Popa GL, Erel O, Tampa M. Thiol-Disulfide Homeostasis in Skin Diseases. J Clin Med 2022; 11:jcm11061507. [PMID: 35329832 PMCID: PMC8954849 DOI: 10.3390/jcm11061507] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2022] [Revised: 03/06/2022] [Accepted: 03/07/2022] [Indexed: 12/22/2022] Open
Abstract
Oxidative stress represents the imbalance between oxidants and antioxidants and has been associated with a wide range of diseases. Thiols are the most important compounds in antioxidant defense. There is an equilibrium between thiols and their oxidized forms, disulfides, known as dynamic thiol-disulfide homeostasis (TDH). In 2014, Erel and Neselioglu developed a novel automated assay to measure thiol and disulfide levels. Subsequently, many researchers have used this simple, inexpensive and fast method for evaluating TDH in various disorders. We have reviewed the literature on the role of TDH in skin diseases. We identified 26 studies that evaluated TDH in inflammatory diseases (psoriasis, seborrheic dermatitis, atopic dermatitis, vitiligo, acne vulgaris and rosacea), allergic diseases (acute and chronic urticaria) and infectious diseases (warts, pityriasis rosea and tinea versicolor). The results are heterogeneous, but in most cases indicate changes in TDH that shifted toward disulfides or toward thiols, depending on the extent of oxidative damage.
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Affiliation(s)
- Simona Roxana Georgescu
- Department of Dermatology, ‘Carol Davila’ University of Medicine and Pharmacy, 020021 Bucharest, Romania; (S.R.G.); (C.M.); (M.T.)
- Department of Dermatology, ‘Victor Babes’ Clinical Hospital for Infectious Diseases, 030303 Bucharest, Romania
| | - Cristina Iulia Mitran
- Department of Microbiology, ‘Carol Davila’ University of Medicine and Pharmacy, 020021 Bucharest, Romania;
| | - Madalina Irina Mitran
- Department of Microbiology, ‘Carol Davila’ University of Medicine and Pharmacy, 020021 Bucharest, Romania;
- Correspondence: (M.I.M.); (G.L.P.)
| | - Clara Matei
- Department of Dermatology, ‘Carol Davila’ University of Medicine and Pharmacy, 020021 Bucharest, Romania; (S.R.G.); (C.M.); (M.T.)
| | - Gabriela Loredana Popa
- Department of Parasitology, ‘Carol Davila’ University of Medicine and Pharmacy, 020021 Bucharest, Romania
- Correspondence: (M.I.M.); (G.L.P.)
| | - Ozcan Erel
- Biochemistry Laboratory, Ankara City Hospital, Ankara 06800, Turkey;
- Faculty of Medicine, Ankara Yildirim Beyazit University, Ankara 06010, Turkey
| | - Mircea Tampa
- Department of Dermatology, ‘Carol Davila’ University of Medicine and Pharmacy, 020021 Bucharest, Romania; (S.R.G.); (C.M.); (M.T.)
- Department of Dermatology, ‘Victor Babes’ Clinical Hospital for Infectious Diseases, 030303 Bucharest, Romania
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Kilinc F, Sener S, Akbas A, Erdogan S, Erel O, Metin A. Oxidative stress and thiol/disulfide homeostasis in human papillomavirus infections. Indian J Dermatol 2022; 67:228-231. [PMID: 36386114 PMCID: PMC9644764 DOI: 10.4103/ijd.ijd_797_20] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
Abstract
Introduction: Viral warts are a group of dermatological diseases caused by human papillomavirus (HPV). Several studies have demonstrated an association between HPV infections and oxidative stress. Thiols are important components of cellular redox homeostasis as antioxidant molecules in the organism. Aim: This study aimed to investigate the role of oxidative stress in patients with HPV infection by analyzing native thiol/disulfide homeostasis. Material and Methods: Forty-two patients with HPV infection and 40 healthy subjects were analyzed for the levels of native thiols, total thiols, and disulfide. Disulfide/native thiol, disulfide/total thiol, and native thiol/total thiol ratios were also calculated. Results: Disulfide and total thiol levels were higher in the patients compared to the healthy controls. The disulfide/native thiol ratio was also higher in the patient group. Native and total thiol levels decreased with the increasing duration of the disease. Conclusion: The native thiol/disulfide homeostasis was shifted toward disulfide in the patients' group, indicating the existence of oxidative stress in HPV infection.
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Mitran CI, Nicolae I, Tampa M, Mitran MI, Caruntu C, Sarbu MI, Ene CD, Matei C, Ionescu AC, Georgescu SR, Popa MI. The Relationship between the Soluble Receptor for Advanced Glycation End Products and Oxidative Stress in Patients with Palmoplantar Warts. ACTA ACUST UNITED AC 2019; 55:medicina55100706. [PMID: 31635193 PMCID: PMC6843152 DOI: 10.3390/medicina55100706] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2019] [Revised: 10/13/2019] [Accepted: 10/16/2019] [Indexed: 02/07/2023]
Abstract
Background and objectives: Warts are the most common lesions caused by human papillomavirus (HPV). Recent research suggests that oxidative stress and inflammation are involved in the pathogenesis of HPV-related lesions. It has been shown that the soluble receptor for advanced glycation end products (sRAGE) may act as a protective factor against the deleterious effects of inflammation and oxidative stress, two interconnected processes. However, in HPV infection, the role of sRAGE, constitutively expressed in the skin, has not been investigated in previous studies. Materials and Methods: In order to analyze the role of sRAGE in warts, we investigated the link between sRAGE and the inflammatory response on one hand, and the relationship between sRAGE and the total oxidant/antioxidant status (TOS/TAS) on the other hand, in both patients with palmoplantar warts (n = 24) and healthy subjects as controls (n = 28). Results: Compared to the control group, our results showed that patients with warts had lower levels of sRAGE (1036.50 ± 207.60 pg/mL vs. 1215.32 ± 266.12 pg/mL, p < 0.05), higher serum levels of TOS (3.17 ± 0.27 vs. 2.93 ± 0.22 µmol H2O2 Eq/L, p < 0.01), lower serum levels of TAS (1.85 ± 0.12 vs. 2.03 ± 0.14 µmol Trolox Eq/L, p < 0.01) and minor variations of the inflammation parameters (high sensitivity-CRP, interleukin-6, fibrinogen, and erythrocyte sedimentation rate). Moreover, in patients with warts, sRAGE positively correlated with TAS (r = 0.43, p < 0.05), negatively correlated with TOS (r = −0.90, p < 0.01), and there was no significant correlation with inflammation parameters. There were no significant differences regarding the studied parameters between groups when we stratified the patients according to the number of the lesions and disease duration. Conclusions: Our results suggest that sRAGE acts as a negative regulator of oxidative stress and could represent a mediator involved in the development of warts. However, we consider that the level of sRAGE cannot be used as a biomarker for the severity of warts. To the best of our knowledge, this is the first study to demonstrate that sRAGE could be involved in HPV pathogenesis and represent a marker of oxidative stress in patients with warts.
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Affiliation(s)
- Cristina Iulia Mitran
- "Carol Davila" University of Medicine and Pharmacy, 020021 Bucharest, Romania.
- "Cantacuzino" National Medico-Military Institute for Research and Development, 011233 Bucharest, Romania.
| | - Ilinca Nicolae
- "Victor Babes" Clinical Hospital for Infectious Diseases, 030303 Bucharest, Romania.
| | - Mircea Tampa
- "Carol Davila" University of Medicine and Pharmacy, 020021 Bucharest, Romania.
- "Victor Babes" Clinical Hospital for Infectious Diseases, 030303 Bucharest, Romania.
| | - Madalina Irina Mitran
- "Carol Davila" University of Medicine and Pharmacy, 020021 Bucharest, Romania.
- "Cantacuzino" National Medico-Military Institute for Research and Development, 011233 Bucharest, Romania.
| | - Constantin Caruntu
- "Carol Davila" University of Medicine and Pharmacy, 020021 Bucharest, Romania.
- "Prof. N. Paulescu" National Institute of Diabetes, Nutrition and Metabolic Diseases, 011233 Bucharest, Romania.
| | - Maria Isabela Sarbu
- "Carol Davila" University of Medicine and Pharmacy, 020021 Bucharest, Romania.
| | | | - Clara Matei
- "Carol Davila" University of Medicine and Pharmacy, 020021 Bucharest, Romania.
| | | | - Simona Roxana Georgescu
- "Carol Davila" University of Medicine and Pharmacy, 020021 Bucharest, Romania.
- "Victor Babes" Clinical Hospital for Infectious Diseases, 030303 Bucharest, Romania.
| | - Mircea Ioan Popa
- "Carol Davila" University of Medicine and Pharmacy, 020021 Bucharest, Romania.
- "Cantacuzino" National Medico-Military Institute for Research and Development, 011233 Bucharest, Romania.
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Wu CQ, Chen GH. Detection of synergistic effect of superoxide dismutase and jujubosides on scavenging superoxide anion radical by capillary electrophoresis. Biomed Chromatogr 2019; 33:e4630. [PMID: 31243785 DOI: 10.1002/bmc.4630] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2019] [Revised: 06/03/2019] [Accepted: 06/21/2019] [Indexed: 11/05/2022]
Abstract
A new capillary electrophoresis method was developed to study the synergistic effect of superoxide dismutase and jujuboside A or B on scavenging superoxide anion radical in serum matrix respectively, in which superoxide anion radical was generated from pyrogallol autoxidation. The electrophoresis conditions, and the factors affecting the productive rate of purpurogallin, such as pyrogallol autoxidation product and the activity of superoxide dismutase, were optimized. Under optimal conditions, the content of superoxide dismutase in Gibco newborn calf serum was 7.06 mg/L, RSD was 2.01% and the average recovery was 98.4%. The values of IC50 for jujuboside A and B in the serum matrix were 157.67 and 31.60 mg/L respectively, and they both had synergy on scavenging superoxide anion radical with superoxide dismutase, but there was no the dose-dependency on this synergy.
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Affiliation(s)
- Chuan-Qin Wu
- College of Food and Bioengineering, Jiangsu University, Zhenjiang, China
| | - Guan-Hua Chen
- College of Food and Bioengineering, Jiangsu University, Zhenjiang, China
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Erturan I, Kumbul Doğuç D, Korkmaz S, Büyükbayram HI, Yıldırım M, Kocabey Uzun S. Evaluation of oxidative stress in patients with recalcitrant warts. J Eur Acad Dermatol Venereol 2019; 33:1952-1957. [PMID: 31199007 DOI: 10.1111/jdv.15746] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2018] [Accepted: 05/29/2019] [Indexed: 11/29/2022]
Abstract
BACKGROUND Warts are benign conditions of the skin and mucosa caused by human papilloma viruses (HPV) that affect many people worldwide. OBJECTIVE The aim of this study was to evaluate OS by TOS/TAS, levels of 8-hydroxy-2-deoxyguanosine (8-OHdG) an indicator of DNA damage, and also protein oxidation levels by determining the dynamic serum thiol/disulphide homeostasis in patients with warts. We also aimed to investigate whether there is a relationship between thiol/disulphide homeostasis, recalcitrance of warts and DNA damage. METHODS Forty patients of age ≥18 years, having recalcitrant genital and/or non-genital warts that persisted for more than 2 years, 40 patients with warts that persisted for <2 years and 40 healthy controls were enrolled in the study. Blood TAS, TOS, OSI, 8-OHdG and dynamic thiol/disulphide homeostasis were evaluated. RESULTS Significant differences were detected between the groups in the levels of 8-OHdG, TOS, OSI, total thiol, native thiol, reduced thiol, as well as native thiol/total thiol ratio, disulphide/total thiol ratio and disulphide/native thiol ratio. Compared with the controls, patients with recalcitrant warts had significantly higher levels of 8-OHdG, TOS and OSI levels. Total thiol and native thiol levels were significantly lower in patients with recalcitrant warts compared with patients with warts that persisted for <2 years. Disulphide levels were significantly higher in the latter group of patients compared with patients with recalcitrant warts and controls. Native thiol/total thiol ratio was significantly higher in both patient groups compared with controls whereas disulphide/total thiol and disulphide/native thiol ratios were significantly lower in both patient groups than in controls. CONCLUSION Our findings suggest that impairment of thiol disulphide homeostasis in patients with recalcitrant warts may lead to increased OS and DNA damage. Thus, antioxidant administration with thiol containing proteins may help in the regression of warts and thereby prevent carcinogenesis.
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Affiliation(s)
- I Erturan
- Department of Dermatology, Suleyman Demirel University Faculty of Medicine, Isparta, Turkey
| | - D Kumbul Doğuç
- Department of Medical Biochemistry, Suleyman Demirel University Faculty of Medicine, Isparta, Turkey
| | - S Korkmaz
- Department of Dermatology, Suleyman Demirel University Faculty of Medicine, Isparta, Turkey
| | - H I Büyükbayram
- Department of Medical Biochemistry, Suleyman Demirel University Faculty of Medicine, Isparta, Turkey
| | - M Yıldırım
- Department of Dermatology, Suleyman Demirel University Faculty of Medicine, Isparta, Turkey
| | - S Kocabey Uzun
- Department of Dermatology, Suleyman Demirel University Faculty of Medicine, Isparta, Turkey
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Cokluk E, Sekeroglu MR, Aslan M, Balahoroglu R, Bilgili SG, Huyut Z. Determining oxidant and antioxidant status in patients with genital warts. Redox Rep 2015; 20:210-4. [PMID: 25584813 DOI: 10.1179/1351000215y.0000000002] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022] Open
Abstract
OBJECTIVES Warts are abnormal skin growths caused by human papilloma virus (HPV) infections within the skin of patients. Genital warts usually appear in the perianal and perigenital regions. Asymptomatic warts may be activated after years and may damage natural immunity. The inflammation that occurs during this process may lead to an imbalance between the prooxidant and the antioxidant systems. The aim of this study was to investigate erythrocyte glutathione peroxidase (GSH-Px) activity, serum paraoxonase enzyme levels, and oxidative stress levels in patients with genital warts. PATIENTS AND METHODS In total, 32 patients with genital warts and 35 healthy subjects were included in this study. Erythrocyte GSH-Px activity, serum catalase activity, and paraoxonase enzyme, and malondialdehyde (MDA) levels were determined. RESULTS Erythrocyte GSH-Px activity, serum MDA levels, and catalase activity were significantly higher in patients with genital warts than in controls (P < 0.01, P < 0.05, and P < 0.05, respectively). However, serum paraoxonase enzyme levels were not significantly different between groups (P > 0.05). Serum triglyceride levels were significantly lower in patients with genital warts than in controls (P < 0.01). However, there were no statistically significant differences between groups with respect to total cholesterol, high-density lipoprotein cholesterol, or low-density lipoprotein cholesterol levels (all P > 0.05). CONCLUSIONS Our data suggest that oxidative stress is increased in genital warts. Increased oxidative stress levels may contribute to the pathogenesis of genital warts, and prolonged HPV infection due to chronic inflammation could also affect oxidative stress.
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Arican O, Ozturk P, Kurutas EB, Unsal V. Status of oxidative stress on lesional skin surface of plantar warts. J Eur Acad Dermatol Venereol 2012; 27:365-9. [PMID: 22221210 DOI: 10.1111/j.1468-3083.2011.04419.x] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
BACKGROUND Warts are abnormal skin growths caused by human papilloma virus (HPV) infections within the skin of the patients. Sometimes the disease is difficult to treatment, and also, the relationship between HPV and some forms of skin cancers is important. The cutaneous oxidative stress status of warts is absent in the literature. OBJECTIVES To evaluate the role of oxidative stress in affected skin areas in a group of patients with plantar warts. METHODS Thirty-six consecutive patients with a diagnosis of plantar warts were enrolled. The samples were obtained by scraping the skin surface. Superoxide dismutase (SOD) and catalase (CAT) activities and malondialdehyde (MDA) levels were measured spectrophotometrically at samples. RESULTS The SOD activity was significantly lower, and the MDA level was significantly higher on the lesional area than on the non-lesional area (P < 0.001 for each), and there was no significant difference in the CAT activity between both areas (P = 0.11). CONCLUSION Cutaneous oxidative stress in patients with plantar warts may play a role in pathogenesis of the disease. The addition of topical drugs with antioxidative effects may be valuable in the treatment of warts.
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Affiliation(s)
- O Arican
- Department of Dermatology, Medical Faculty, Trakya University, Edirne, TurkeyDepartments of Dermatology Biochemistry, Medical Faculty, Kahramanmaras Sutcuimam University, Kahramanmaras, Turkey
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De Luca C, Kharaeva Z, Raskovic D, Pastore P, Luci A, Korkina L. Coenzyme Q(10), vitamin E, selenium, and methionine in the treatment of chronic recurrent viral mucocutaneous infections. Nutrition 2011; 28:509-14. [PMID: 22079390 DOI: 10.1016/j.nut.2011.08.003] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2010] [Revised: 07/27/2011] [Accepted: 08/01/2011] [Indexed: 12/20/2022]
Abstract
OBJECTIVE Host defense and latency determinants in viral recurrent dermatologic infections are not entirely understood, as conventional protocols are inadequate to achieve fast healing and relapse prevention. Endogenously produced oxygen/nitrogen reactive species (ROS/RNS) are essential for antiviral immune defense, while their excess may aggravate skin inflammation. Here, we sought a nutritional approach capable of controlling ROS/RNS balance to accelerate recovery and inhibit recurrences of two mucocutaneous chronic DNA-virus infections. METHODS Two controlled clinical trials evaluated the feasibility of ROS/RNS-modulating nutriceutical dosages of coenzyme Q(10), RRR-α-tocopherol, selenium aspartate, and L-methionine associated with established therapies. Clinical trial 1 evaluated 68 patients with relapsing human papillomavirus skin warts treated with cryotherapy followed by 180 d of nutriceutical/placebo administration. Clinical trial 2 compared the combination of acyclovir followed by 90 d of nutriceutical administration versus acyclovir alone in patients with recurrences of herpes simplex genitalis (n = 60) or herpes zoster (n = 29). Viral DNA levels were assessed by polymer chain reaction, biomarkers of antiviral defense (peroxynitrite and IFNα/γ) and antioxidant capacity (lipophilic antioxidants and glutathione) were assayed by biochemical/enzyme-linked immunosorbent assay techniques in blood fractions. RESULTS In both trials, the nutriceutical induced significantly faster healing (P < 0.01-0.05) with reduced incidence of relapses (P < 0.05) as compared to control groups, which was confirmed by decreased viral load and increased antiviral cytokine and peroxynitrite plasma levels. Plasma antioxidant capacity was higher (P < 0.01) in the experimental versus control groups. CONCLUSIONS Results document positive clinical outcomes of the selected nutriceutical associated with conventional protocols in the management of relapsing mucocutaneous human papillomavirus and herpes infections.
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Affiliation(s)
- Chiara De Luca
- Dermatology Research Institute (IDI IRCCS), Rome, Italy.
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Stachowicz-Stencel T, Synakiewicz A, Owczarzak A, Aleksandrowicz-Wrona E, Sliwinska A, Lysiak-Szydlowska W, Balcerska A. The antioxidant status and response to therapy in children with soft tissue sarcomas and neuroblastoma. Pediatr Blood Cancer 2011; 57:561-8. [PMID: 21298774 DOI: 10.1002/pbc.23014] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/19/2010] [Accepted: 12/09/2010] [Indexed: 11/05/2022]
Abstract
BACKGROUND Antioxidant systems in cells maintain the proper homeostasis of reactive oxygen species, which at high concentrations can induce carcinogenesis. The aim of this study was to evaluate the serum levels of ischemia-modified albumin (IMA), erythrocyte superoxide dismutase (SOD), and glutathione peroxidase (GSH-Px) as markers for prognosis in children with neuroblastoma (NB) and soft tissue sarcomas (STS), two cancer types for which reliable prognostic factors are needed. PROCEDURE SOD, GSH-Px, and IMA were measured before and during responses to therapy assessment in 99 children with NB and STS and in 30 healthy controls. RESULTS There were no statistically significant differences in the erythrocyte SOD and GSH-Px activities between the patients with cancer and healthy controls. The levels of IMA in patients with STS and NB were found to be significantly higher than in the controls (P = 0.0013; P = 0.0066, and 0.0164, respectively). Decreased activities of SOD and GSH-Px were found in all patients with poor-responding (PRS) cancers and decreased SOD activity was found in patients with PRS NB. An increase in GSH-Px was observed in patients with good-responding (GR) NB. All patients with GR cancers demonstrated higher SOD and GSH-Px activities than patients with PRS cancers. CONCLUSIONS While determining the levels of specific antioxidants as antioxidant-barrier parameters in children with cancer may be valuable in predicting therapeutic responses as well as outcomes, additional studies are required.
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Affiliation(s)
- Teresa Stachowicz-Stencel
- Department of Pediatrics, Hematology, Oncology and Endocrinology, Medical University of Gdansk, Gdansk, Poland.
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SALAWU EO. Lycopersicon esculentum (Tomato) Prevents Adverse Effects of Lead on Blood Constituents. Malays J Med Sci 2010; 17:13-18. [PMID: 22135544 PMCID: PMC3216173] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2009] [Accepted: 02/11/2010] [Indexed: 05/31/2023] Open
Abstract
BACKGROUND Lead is known for its adverse effects on various organs and systems. In this study, the ability of lead to adversely affect blood parameters was investigated, and Lycopersicon esculentum, or commonly known as tomato (a source of antioxidants), was administered orally in the form of tomato paste (TP) to reduce the adverse effects of lead. METHODS The study involved 56 Wistar rats divided equally into 4 groups of 14 rats each: Control, LA(G), TP(G), and LA+TP(G). Control and TP(G) rats were given distilled water ad libitum, while LA(G) and LA+TP(G) rats were given 1% lead (II) acetate (LA) per day. TP(G) and LA+TP(G) rats were additionally treated with 1.5 ml of TP per day. All treatments lasted for 10 weeks, after which the rats were weighed and sacrificed, and haematological and biochemical parameters were measured. The independent samples t test was used to analyse the results. RESULTS LEAD CAUSED SIGNIFICANT REDUCTIONS IN THE FOLLOWING PARAMETERS: weight; packed cell volume; red blood cell and white blood cell counts; the percentages of lymphocytes and monocytes; total serum protein, albumin, and globulin levels; and plasma superoxide dismutase and catalase activities. In contrast, lead caused a significant increase in the percentage of neutrophils and the plasma malondialdehyde concentration. TP, however, significantly prevented the adverse effects of LA. CONCLUSION The oral administration of TP prevents the adverse effects of lead on blood constituents.
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Affiliation(s)
- Emmanuel O SALAWU
- Correspondence; Emmanuel O Salawu, BTech (Physiology), Department of Physiology, Faculty of Basic Medical Sciences, Ladoke Akintola University of Technology, Ogbomoso, Nigeria, Tel: +234-(0)8056916409,
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