Hepatoprotective Effects of Medicinal Plants Extracts on Carbon Tetrachloride
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HEPATOPROTECTIVE EFFECTS OF MEDICINAL PLANTS EXTRACTS ON CARBON TETRACHLORIDE (CCl4) INDUCED LIVER DAMAGE IN MICE Thesis submitted for the fulfillment of the degree of DOCTOR OF PHILOSOPHY By MUHAMMAD ZAKRYYA KHAN Registration # 02-FBAS/PHDBT/F-13 Department of Biological Sciences Faculty of Basic and Applied Sciences International Islamic University Islamabad, Pakistan 2013-2020 HEPATOPROTECTIVE EFFECTS OF MEDICINAL PLANTS EXTRACTS ON CARBON TETRACHLORIDE (CCl4) INDUCED LIVER DAMAGE IN MICE Submitted By MUHAMMAD ZAKRYYA KHAN Supervisor Co-Supervisor Dr. Muhammad Arshad Malik Dr. Muhammad Imran Shabbir Associate Professor, Assistant Professor, Department of Biological Sciences Department of Biological Sciences FBAS IIU Islamabad FBAS IIU Islamabad Department of Biological Sciences Faculty of Basic and Applied Sciences International Islamic University Islamabad, Pakistan 2013-2020 Department of Biological Sciences Faculty of Basic and Applied Sciences International Islamic University Islamabad, Pakistan Date: ___________ Final Approval It is certified that we have read the thesis entitled “Hepatoprotective Effects of Medicinal Plants Extracts on Carbon Tetrachloride (CCl4) Induced Liver Damage in Mice” submitted by Mr. Muhammad Zakryya Khan and it is our judgment that this project is of sufficient standard to warrant its acceptance by the International Islamic University, Islamabad, in partial fulfillment of the requirements for the degree of Doctor of Philosophy in Biotechnology. Supervisor Dr. Muhammad Arshad Malik _______________________ Associate Professor and Chairman, Department of Biological Sciences, FBAS, IIUI Co-Supervisor Dr. Muhammad Imran Shabbir _____________________ Assistant Professor, Department of Biological Sciences, FBAS, IIUI External Examiner I Dr. Muhammad Ramzan ____________________ Principal Scientific Officer, NARC, Islamabad External Examiner II Dr. Muhammad Sheeraz Ahmad _____________________ Associate Professor, PMAS, UAAR, Internal Examiner Dr. Naveeda Riaz Associate Professor, _____________________ Biological Sciences FBAS, IIUI. Department of Biological Sciences Faculty of Basic and Applied Sciences International Islamic University Islamabad, Pakistan Date: ______________ FINAL APPROVAL It is certified that we have read the thesis submitted by Mr. Muhammad Zakryya Khan and it is our judgment that this project is of sufficient standard to warrant its acceptance by the International Islamic University, Islamabad in partial fulfillment of the requirements for the degree of Doctor of Philosophy in Biotechnology. Chairman Dr. Muhammad Arshad Malik ____________________________ Associate Professor, Department of Biological Sciences International Islamic University Islamabad, Pakistan Dean Professor Dr. Muhammad Sajid ____________________________ Dean, Faculty of Basic and Applied Sciences International Islamic University Islamabad, Pakistan This dissertation is Submitted to International Islamic University, Islamabad, Pakistan in partial fulfillment of the requirements of the degree of Doctor of Philosophy (Biotechnology). In the name of Allah, Most gracious, most merciful. All praise be to Allah Lord of all the worlds, Most of beneficient, ever merciful, Lord of the day of judgements You alone we worship, and to you Alone we turn for help. Guide us (O Allah) to the path that is straight, The path of those you have blessed, Not of those who have earned your anger, Nor those who have gone astray. Al Quran: The opening Chapter DEDICATION This work is dedicated to The loving memory of my late parents who Cherished this dream for me. Also to my Wife Daughter Sons Brothers Sisters and my Teachers DECLARATION It is certified that work done on this Ph. D Biotechnology research thesis is purely conducted by me. I carried out the experimental work described in this thesis in Biotechnology Lab, Department of Biological Sciences, International Islamic University Islamabad (IIUI) Pakistan, Animals House Lab, National Institute of Health (NIH) Islamabad and the School of Pharmacy and Pharmaceutical sciences, University of Dublin, Ireland. All the material is prepared by myself and has not been copied from anywhere; however, some test and figures have been used which are properly referenced. The conclusions are my own research after numerous discussions with my supervisor. All the assistance and help received during the course of research have been duly acknowledged. Date ______________________ Muhammad Zakryya Khan I certify that the above statement is correct. Dr. Muhammad Arshad Malik Supervisor TABLE OF CONTENTS S.No. TITLE Page. No. TABLE OF CONTENTS i LIST OF TABLES viii LIST OF FIGURES ix ABBREVIATIONS xvi ACKNOWLEDGMENTS xxii ABSTRACT xxiv 1. INTRODUCTION 2-9 1.1. Liver Role and its Complications 2 1.2. Liver Disorder Management 6 1.3. Hepatoprotective Agents 7 1.4. Objectives of Current Study 9 2. LITERATURE REVIEW 11-34 2.1. Structure and Functions of Liver 11 2.2. Liver Defects and Causative Agents 11 2.3. Mechanism of Liver Toxicity 12 2.4. Hepatitis; an Alarming Factor to Damage Liver 13 2.5. Treatment Methods of Diseases 14 i 2.6. Role of Plants in Healthcare 15 2.7. Hepatoprotective Role of Medicinal Plants 17 2.8. Phytochemicals as Antioxidants 19 2.9. Silymarin as an Important Standard Hepatoprotective Drug 22 2.10. Description of Plants Under Study 23 2.10.1. Viola canescens 23 2.10.2. Dryopteris ramosa 24 2.10.3. Geranium wallichianum 25 2.10.4. Elaeagnus parvifolia 26 2.10.5. Rosa brunonii 27 2.10.6. Aconogonon alpinum 28 2.10.7. Oxyria digyna 30 2.10.8. Fragaria nubicola 30 2.10.9. Thymus serphyllum 32 2.10.10. Primula macrophylla 33 2.11. Identification Techniques for Phytochimicals 34 3. MATERIALS AND METHODS 36-60 3.1. Chemicals and Solvents 36 3.2. Instruments (Equipments and glass ware) 36 3.3. Study Design 37 ii 3.4. Plant Material 38 3.4.1. Selection and Collection of Plants Material 38 3.4.2. Identification of Plant Samples 38 3.5. Preparation of Methanolic Extract (ME) 39 3.5.1. Grinding of Plant Material 39 3.5.2. Extraction Procedure 40 3.6. Hepatoprotective Activity of Methanolic Extracts of Selected Plants 40 3.6.1. Experimental Animals 40 3.6.2. Oral Toxicity Test 41 3.6.3. Hepatoprotective Effect of ME of Selected Medicinal Plant Against 41 CCl4 Induced Hepatotoxicity 3.6.4. Experimental Design for Hepatoprotective Activities 42 3.6.5. Treatment Procedure 43 3.7. Biochemical and Histopathological Investigations of Mice 45 3.7.1. Biochemical Assay 46 3.7.2. Histopathological Studies 46 3.7.3. Short Listing of Most Active Hepatoprotective Plants 46 3.8. Investigation of Short Listed Most Active Hepatoprotective Plants 46 3.8.1. Extraction of Short Listed Most Active Plants 46 iii 3.9. Fractionation of Short Listed Most Active Plants Extracts (GWME, 47 EPME and AAME) and Their Hepatoprotective Activities 3.9.1.. Fractionation Process of GWME, EPME and AAME 47 3.10. Hepatoprotective Effect of Fractions of Short Listed Active Plants (G. 50 walichianum, E. parvofolia and A. alpinum) 3.10.1. Experimental Animals 50 3.10.2. Dose Selection and Calculation 50 3.10.3. Experimental Design 50 3.10.4. Treatment Procedure with Different Fractions of Most Active 50 Hepatoprotective Plants 3.11. Biochemical Parameters and Liver Histopathological Analysis of Mice 53 After Treatment with Fraction of G. wallichianum, E. parvifolia and A. alpinum 3.11.1. Biochemical Assay 54 3.11.2. Histological Studies 54 3.11.3. Determination of Most Active Fractions 55 3.12. Bioactivity Determination (Antioxidant Activity by DPPH Assay) 55 3.12.1. DPPH Assay and Calculation of IC50 55 3.13. Phytochemical Analysis (Quantitative Phytochemical Analysis) 56 3.13.1. Assay for Total Phenolic Contents (TPC) 56 3.13.2. Assay for Total Flavonoid Content (TFC) 56 3.14. Identification of Compounds 57 iv 3.14.1. HPLC Analysis 57 3.14.2. LCMS Analysis 59 3.15. Statistical Analysis 60 4. RESULTS 62-162 4.1. Plants Collection and Identification 62 4.2. Crude Methanolic Extraction and Hepatoprotective Effect of Selected 62 Medicinal Plants 4.2.1. Methanolic Extraction 62 4.2.2. Acute Oral Toxicity Test 63 4.3. Hepatoprotective Effects of Methanolic Extracts of Selected Plants 64 4.3.1. Liver Biochemical Parameters 64 4.3.2. Percent (%) Protection of Liver Biochemical Parameters 71 4.3.3. Liver Histopathological Analysis on Treatment with ME of Selected 74 Plants 4.3.4. Short Listing of Most Active Hepatoprotective Plants 88 4.4. Extraction and Fractionation of Short Listed Most Active 88 Hepatoprotective Plants 4.4.1. Extraction of Short Listed Active Plants 88 4.4.2. Fractionation of Shortlisted Selected Active Plants 89 4.5. Hepatoprotective Effect of Different Fractions of G. wallichianum, E. 91 parvifolia and A. alpinum v 4.5.1. Hepatoprotective Effect of Different Fractions of G. wallichianum 91 4.5.1.1. Liver Biochemical Parameters 91 4.5.1.2. Liver Histopathology on Treatment of GW Fractions 96 4.5.2. Hepatoprotective Effect of Different Fractions of E. parvifolia 105 4.5.2.1. Liver Biochemical Parameters 105 4.5.2.2. Liver Histopathology on Treatment of EP Fractions 111 4.5.3. Hepatoprotective Effect of Different Fractions of A. alpinum 117 4.5.3.1. Liver Biochemical Parameters 117 4.5.3.2. Liver Histopathology on Treatment of AA Fractions 122 4.5.4. Active Fractions of Selected Active Plants 129 4.6. Antioxidant Activity of Methanlic Extract and Fractions of Short 130 Listed Active Plant (DPPH Radical Scavenging Assay) 4.6.1. DPPH Radical Scavenging Activity of G. wallichianum 130 4.6.2. DPPH Radical Scavenging Activity of E. parvifolia 132 4.6.3. DPPH Radical Scavenging Activity of A. alpinum 134 4.7. Phytochemical Analysis (Quantitative Analysis for TPC and TFC) 137 4.7.1. Total Phenolic Contents (TPC) 137 4.7.2. Total Flavonoid Contents (TFC) 139 4.8. Identification of Phytoconstituents of Short Listed Active Plants 141 vi 4.8.1. HPLC Analysis of Methnolic Extract and Most Active Fractions of 141 Short Listed Active Plants 4.8.1.1. HPLC Analysis of G. wallichianum 142 4.8.1.2.