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Published in: BMC Complementary Medicine and Therapies 1/2016

Open Access 01-12-2016 | Research article

Scientific investigation of crude alkaloids from medicinal plants for the management of pain

Authors: Mohammad Shoaib, Syed Wadood Ali Shah, Niaz Ali, Ismail Shah, Shafi Ullah, Mehreen Ghias, Muhammad Nawaz Tahir, Farah Gul, Sohail Akhtar, Abd Ullah, Wajid Akbar, Asad Ullah

Published in: BMC Complementary Medicine and Therapies | Issue 1/2016

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Abstract

Background

Tissue damage is associated with pain, which is an alarming sign. Aspirin and morphine have been widely used in recent decades for management of pain. Medicinal herbs have been in use for treatment of different diseases for centuries. Many of these herbs possess analgesic activity with relatively less incidences of adverse effects. The strong positive correlation of alkaloids in medicinal plants for analgesic activity persuades an intention to determine possible analgesic activity of total alkaloids extracted from the selected medicinal plants using animal models to answer its possible mechanisms.

Methods

Crude alkaloids from selected medicinal plants (Woodfordia fruticosa, Adhatoda vasica, Chenopodium ambrosioides, Vitex negundo, Peganum harmala and Broussonetia papyrifera) were extracted as per reported literature. The test crude alkaloids were screened foracute toxicity study. Writhings induced by acetic acid, tail immersion method and formalin-induced nociception assay procedures were used for possible analgesic effects of the crude alkaloids.

Results

Crude alkaloids were safe up to dose of 1250 mg/kg body weight in mice. The alkaloids significantly reduced the abdominal constrictions, and increased the time for paw licking response in both phases with a significant raise in latency time in nociception models (P ≤ 0.05). Moreover, the antinociceptive response was significantly attenuated by pretreatment with naloxone suggesting involvement of the opioid receptors for possible antinociceptive action.

Conclusions

Crude alkaloids of Woodfordia fruticosa and Peganum harmala showed prominent analgesic potentials through inhibition of peripheral as well as central nervous system mechanisms. Further work is required for isolation of the pharmacologically active constituents.
Literature
1.
go back to reference Merskey H. Pain terms: a list with definitions and notes on usage. Recommended by the lASP subcommittee on Taxonomy. Pain. 1979;6:249–52.CrossRef Merskey H. Pain terms: a list with definitions and notes on usage. Recommended by the lASP subcommittee on Taxonomy. Pain. 1979;6:249–52.CrossRef
2.
go back to reference Unruh A, Strong J, Wright A. Introduction. In: Strong J, Unruh AM, Wright A, Baxter GD, Wall PD, editors. Pain: a textbook for therapists. London: Churchill Livingstone; 2002. Unruh A, Strong J, Wright A. Introduction. In: Strong J, Unruh AM, Wright A, Baxter GD, Wall PD, editors. Pain: a textbook for therapists. London: Churchill Livingstone; 2002.
3.
go back to reference Hewitt DJ, Hargreaves RJ, Curtis SP, Michelson D. Challenges in analgesic drug development. Clin Pharmacol Ther. 2009;86:447–50.PubMed Hewitt DJ, Hargreaves RJ, Curtis SP, Michelson D. Challenges in analgesic drug development. Clin Pharmacol Ther. 2009;86:447–50.PubMed
4.
go back to reference Hanson GR, Venturelli PJ, Fleckenstein AE. Drugs and society. 10th ed. Boston, Mass: Jones and Bartlett; 2011. Hanson GR, Venturelli PJ, Fleckenstein AE. Drugs and society. 10th ed. Boston, Mass: Jones and Bartlett; 2011.
5.
go back to reference Fan SH, Noraisah AA, Dayang FB. Evaluation of analgesic activity of the methanol extract from the galls of Quercus infectoria (Olivier) in rats. J Evid Based Complementary Altern Med. 2014;2014:1–6.CrossRef Fan SH, Noraisah AA, Dayang FB. Evaluation of analgesic activity of the methanol extract from the galls of Quercus infectoria (Olivier) in rats. J Evid Based Complementary Altern Med. 2014;2014:1–6.CrossRef
7.
go back to reference Zainul AZ, Hijaz MS, Manraj SC, Arifah AK, Teh LK, Mohd ZS. Antinociceptive activity of methanolic extract of Muntingia calabura leaves: further elucidation of the possible mechanisms. BMC Complement Altern Med. 2014;14:63–75.CrossRef Zainul AZ, Hijaz MS, Manraj SC, Arifah AK, Teh LK, Mohd ZS. Antinociceptive activity of methanolic extract of Muntingia calabura leaves: further elucidation of the possible mechanisms. BMC Complement Altern Med. 2014;14:63–75.CrossRef
8.
go back to reference Asie S, Majid M, Sima N, Manijeh M. Evaluation of anti-inflammatory and analgesic activity of the extract and fractions of Astragalus hamosus in animal models. Iran J Pharm Res. 2015;14:263–9. Asie S, Majid M, Sima N, Manijeh M. Evaluation of anti-inflammatory and analgesic activity of the extract and fractions of Astragalus hamosus in animal models. Iran J Pharm Res. 2015;14:263–9.
9.
go back to reference Roberts MF, Wink M. Introduction. In: Roberts MF, Wink M, editors. Alkaloids: biochemistry, ecology, and medicinal applications. Springer Street, New York: Plenum Press; 1998.CrossRef Roberts MF, Wink M. Introduction. In: Roberts MF, Wink M, editors. Alkaloids: biochemistry, ecology, and medicinal applications. Springer Street, New York: Plenum Press; 1998.CrossRef
10.
go back to reference Amir MK, Rizwana AQ, Faizan U, Syed AG, Asia N, Sumaira S, Muhammad KL, Muhammad YL, Shafiq UR, Ishtiaq H, Waheed M. Phytochemical analysis of selected medicinal plants of Margalla hills and surroundings. J Med Plants Res. 2011;5:6017–23. Amir MK, Rizwana AQ, Faizan U, Syed AG, Asia N, Sumaira S, Muhammad KL, Muhammad YL, Shafiq UR, Ishtiaq H, Waheed M. Phytochemical analysis of selected medicinal plants of Margalla hills and surroundings. J Med Plants Res. 2011;5:6017–23.
11.
go back to reference Yogesh B, YV, Sumitra C. Brine shrimp cytotoxicity, anti-inflammatory and analgesic properties of Woodfordia fruticosa Kurz flowers. Iran J Pharm Res. 2012; 11: 851-861. Yogesh B, YV, Sumitra C. Brine shrimp cytotoxicity, anti-inflammatory and analgesic properties of Woodfordia fruticosa Kurz flowers. Iran J Pharm Res. 2012; 11: 851-861.
12.
go back to reference Wahid AM, Suyog DM, Suraj BJ, Ajinkya MP, Mukhtar SK, Madhukar RV. Evaluation of antiinflammatory and analgesic activities of ethanolic extract of roots Adhatoda vasica Linn. Int J PharmTech Res. 2010;2:1364–8. Wahid AM, Suyog DM, Suraj BJ, Ajinkya MP, Mukhtar SK, Madhukar RV. Evaluation of antiinflammatory and analgesic activities of ethanolic extract of roots Adhatoda vasica Linn. Int J PharmTech Res. 2010;2:1364–8.
13.
go back to reference Ibironke GF, Ajiboye KI. Studies on the anti-inflammatory and analgesic properties of Chenopodium ambrosioides leaf extract in rats. Int J Pharm. 2007;3:111–5.CrossRef Ibironke GF, Ajiboye KI. Studies on the anti-inflammatory and analgesic properties of Chenopodium ambrosioides leaf extract in rats. Int J Pharm. 2007;3:111–5.CrossRef
14.
go back to reference Zhenga CJ, Tangb WZ, Huanga BK, Hana T, Zhanga QY, Zhanga H, Qin LP. Bioactivity-guided fractionation for analgesic properties and constituents of Vitex negundo L. seeds. Phytomedicine. 2009;16:560–7.CrossRef Zhenga CJ, Tangb WZ, Huanga BK, Hana T, Zhanga QY, Zhanga H, Qin LP. Bioactivity-guided fractionation for analgesic properties and constituents of Vitex negundo L. seeds. Phytomedicine. 2009;16:560–7.CrossRef
15.
go back to reference Loubna F, Amine L, Rachida A, Ahmed B, Abderrahman C. Evaluation of the analgesic effect of alkaloid extract of Peganum harmala L. Possible mechanisms involved. J Ethnopharmacol. 2008;115:449–54.CrossRef Loubna F, Amine L, Rachida A, Ahmed B, Abderrahman C. Evaluation of the analgesic effect of alkaloid extract of Peganum harmala L. Possible mechanisms involved. J Ethnopharmacol. 2008;115:449–54.CrossRef
16.
go back to reference Lin LW, Chen HY, Wu CR, Liao PM, Lin YT, Hsieh MT, Ching H. Comparison with various parts of Broussonetia papyrifera as to the antinociceptive and anti-inflammatory activities in rodents. Biosci Biotechnol Biochem. 2008;72:2377–84.PubMed Lin LW, Chen HY, Wu CR, Liao PM, Lin YT, Hsieh MT, Ching H. Comparison with various parts of Broussonetia papyrifera as to the antinociceptive and anti-inflammatory activities in rodents. Biosci Biotechnol Biochem. 2008;72:2377–84.PubMed
17.
go back to reference Irene MV, Arlyn CS. Cassiaindoline, a new analgesic and anti-inflammatory alkaloid from Cassia alata. Z Naturforsch C. 2009;64:335–8. Irene MV, Arlyn CS. Cassiaindoline, a new analgesic and anti-inflammatory alkaloid from Cassia alata. Z Naturforsch C. 2009;64:335–8.
18.
go back to reference Kaleem WA, Muhammad N, Qayum M, Khan H, Khan A, Aliberti L, Vincenzo DF. Antinociceptive activity of cyclopeptide alkaloids isolated from Ziziphus oxyphylla Edgew (Rhamnaceae). Fitoterapia. 2013;91:154–8.CrossRefPubMed Kaleem WA, Muhammad N, Qayum M, Khan H, Khan A, Aliberti L, Vincenzo DF. Antinociceptive activity of cyclopeptide alkaloids isolated from Ziziphus oxyphylla Edgew (Rhamnaceae). Fitoterapia. 2013;91:154–8.CrossRefPubMed
19.
go back to reference Fagner CL, Jaime RF, Hermann FC, Paula RRS, Andrea SC, Alan BC, de Almeida RN, Dias Cda S, Bozza PT, Piuvezam MR. Curine, an alkaloid isolated from Chondrodendron platyphyllum inhibits prostaglandin E2 in experimental models of inflammation and pain. Planta Med. 2014;80:1072–8. Fagner CL, Jaime RF, Hermann FC, Paula RRS, Andrea SC, Alan BC, de Almeida RN, Dias Cda S, Bozza PT, Piuvezam MR. Curine, an alkaloid isolated from Chondrodendron platyphyllum inhibits prostaglandin E2 in experimental models of inflammation and pain. Planta Med. 2014;80:1072–8.
20.
go back to reference Muhammad N, Shrestha RL, Adhikari A, Wadood A, Khan H, Khan AZ, Maione F, Mascolo N, De Feo V. First evidence of the analgesic activity of govaniadine, an alkaloid isolated from Corydalis govaniana Wall. Nat Prod Res. 2014;29:430–7. Muhammad N, Shrestha RL, Adhikari A, Wadood A, Khan H, Khan AZ, Maione F, Mascolo N, De Feo V. First evidence of the analgesic activity of govaniadine, an alkaloid isolated from Corydalis govaniana Wall. Nat Prod Res. 2014;29:430–7.
21.
go back to reference Harborne JB. Phytochemical methods. 2nd ed. New York: Chapman and Hall; 1984.CrossRef Harborne JB. Phytochemical methods. 2nd ed. New York: Chapman and Hall; 1984.CrossRef
22.
go back to reference Mahboba BN, Rabia OA, Nabil AS, Asma YAN. Evaluation of antibacterial and antioxidant activities of Artemisia campestris (Astraceae) and Ziziphus lotus (Rhamnacea). Arab J Chem. 2010;3:79–84.CrossRef Mahboba BN, Rabia OA, Nabil AS, Asma YAN. Evaluation of antibacterial and antioxidant activities of Artemisia campestris (Astraceae) and Ziziphus lotus (Rhamnacea). Arab J Chem. 2010;3:79–84.CrossRef
23.
go back to reference Shammary AAH, Malik AASS, Saeidy MAA. Evaluation of analgesic activity and toxicity of alkaloids in Myristica fragrans seeds in mice. J Pain Res. 2013;6:611–5. Shammary AAH, Malik AASS, Saeidy MAA. Evaluation of analgesic activity and toxicity of alkaloids in Myristica fragrans seeds in mice. J Pain Res. 2013;6:611–5.
24.
go back to reference Lorke D. A New approach to practical acute toxicity testing. Arch Toxicol. 1983;53:275–87.CrossRef Lorke D. A New approach to practical acute toxicity testing. Arch Toxicol. 1983;53:275–87.CrossRef
25.
go back to reference Niaz A, Hina A, Aslam K, Ghayour A, Wadood AS, Muhammad N, Muhammad J. Antispasmodic and antidiarrhoeal activity of the fruit of Rosa moschata (J). BMC Complement Altern Med. 2014;14:485–90.CrossRef Niaz A, Hina A, Aslam K, Ghayour A, Wadood AS, Muhammad N, Muhammad J. Antispasmodic and antidiarrhoeal activity of the fruit of Rosa moschata (J). BMC Complement Altern Med. 2014;14:485–90.CrossRef
26.
go back to reference Koster R, Anderson M, Beer EJ. Acetic acid for analgesic screening. Fed Proc. 1959;18:412–8. Koster R, Anderson M, Beer EJ. Acetic acid for analgesic screening. Fed Proc. 1959;18:412–8.
27.
go back to reference Pandurangan SB, Paul AS, Savarimuthu I, Ali AA. Antinociceptive, immunomodulatory and antipyretic activity of nymphayol isolated from Nymphaea stellata (Willd.) flowers. Biomol Ther. 2013;21:391-97. Pandurangan SB, Paul AS, Savarimuthu I, Ali AA. Antinociceptive, immunomodulatory and antipyretic activity of nymphayol isolated from Nymphaea stellata (Willd.) flowers. Biomol Ther. 2013;21:391-97.
28.
go back to reference Bonito MC, Cicala C, Marcotullio MC, Maione F, Mascolo N. Biological activity of bicyclic and tricyclic diterpenoids from Salvia species of immediate pharmacological and pharmaceutical interest. Nat Prod Commun. 2011;8:1205–15. Bonito MC, Cicala C, Marcotullio MC, Maione F, Mascolo N. Biological activity of bicyclic and tricyclic diterpenoids from Salvia species of immediate pharmacological and pharmaceutical interest. Nat Prod Commun. 2011;8:1205–15.
29.
go back to reference Alfieri A, Maione F, Bisio A, Romussi G, Mascolo N, Cicala C. Effect of a diterpenoid from Salvia cinnabarina on arterial blood pressure in rats. Phytother Res. 2007;7:690–2.CrossRef Alfieri A, Maione F, Bisio A, Romussi G, Mascolo N, Cicala C. Effect of a diterpenoid from Salvia cinnabarina on arterial blood pressure in rats. Phytother Res. 2007;7:690–2.CrossRef
30.
go back to reference Maione F, Cicala C, Musciacco G, De Feo V, Amat AG, Ialenti A, Mascolo N. Phenols, alkaloids and terpenes from medicinal plants with antihypertensive and vasorelaxant activities: a review of natural products as leads to potential therapeutic agents. Nat Prod Commun. 2013;4:539–44. Maione F, Cicala C, Musciacco G, De Feo V, Amat AG, Ialenti A, Mascolo N. Phenols, alkaloids and terpenes from medicinal plants with antihypertensive and vasorelaxant activities: a review of natural products as leads to potential therapeutic agents. Nat Prod Commun. 2013;4:539–44.
31.
go back to reference Paulino N, Dantas AP, Bankova V, Longhi DT, Scremin A, Decastro SL, et al. Bulgarian propolis induces analgesics and antiinflammatory effects in mice and inhibits in-vitro contraction of airway smooth muscle. J Pharmacol Sci. 2003;93:307–13.CrossRefPubMed Paulino N, Dantas AP, Bankova V, Longhi DT, Scremin A, Decastro SL, et al. Bulgarian propolis induces analgesics and antiinflammatory effects in mice and inhibits in-vitro contraction of airway smooth muscle. J Pharmacol Sci. 2003;93:307–13.CrossRefPubMed
32.
go back to reference Tjolsen A, Berge OG, Hunskaar S, Rosland JH, Hole K. The formalin test: an evaluation of the method. Pain. 1992;51:5–17.CrossRefPubMed Tjolsen A, Berge OG, Hunskaar S, Rosland JH, Hole K. The formalin test: an evaluation of the method. Pain. 1992;51:5–17.CrossRefPubMed
33.
go back to reference Collier HO, Dinneen LC, Johnson CA, Schneider C. The abdominal constriction response and its suppression by analgesic drugs in the Mouse. Br J Pharmacol Chemother. 1968;32:295–310.CrossRefPubMedPubMedCentral Collier HO, Dinneen LC, Johnson CA, Schneider C. The abdominal constriction response and its suppression by analgesic drugs in the Mouse. Br J Pharmacol Chemother. 1968;32:295–310.CrossRefPubMedPubMedCentral
34.
go back to reference Dhara AK, Suba V, Sen T, Pal S, Nagchaudhuri AK. Preliminary studies on the anti-inflammatory and analgesic activity of the methanolic fraction of the root extract of Tragia involucrate. J Ethnopharmacol. 2000;72:265–8.CrossRefPubMed Dhara AK, Suba V, Sen T, Pal S, Nagchaudhuri AK. Preliminary studies on the anti-inflammatory and analgesic activity of the methanolic fraction of the root extract of Tragia involucrate. J Ethnopharmacol. 2000;72:265–8.CrossRefPubMed
35.
go back to reference Bentley GA, Newton SH, Starr J. Studies on the anti-nociceptive action of a agonist drugs and their interaction with opioid mechanisms. Br J Pharmacol. 1983;79:125–34.CrossRefPubMedPubMedCentral Bentley GA, Newton SH, Starr J. Studies on the anti-nociceptive action of a agonist drugs and their interaction with opioid mechanisms. Br J Pharmacol. 1983;79:125–34.CrossRefPubMedPubMedCentral
36.
go back to reference Duarte I, Nakamura M, Ferreira S. Participation of the sympathetic system in acetic acid-induced writhing in mice. Braz J Med Biol Res. 1988;21:341–3.PubMed Duarte I, Nakamura M, Ferreira S. Participation of the sympathetic system in acetic acid-induced writhing in mice. Braz J Med Biol Res. 1988;21:341–3.PubMed
37.
go back to reference Vane JR, Botting RM. The mechanism of action of aspirin. Thromb Res Rev. 2003;110:255–8.CrossRef Vane JR, Botting RM. The mechanism of action of aspirin. Thromb Res Rev. 2003;110:255–8.CrossRef
38.
go back to reference Biswal S, Das MC, Nayak P. Antinociceptive activity of seeds of Trigonella foenumgraecum in rats. Indian J Physiol Pharmacol. 2003;47:479–80.PubMed Biswal S, Das MC, Nayak P. Antinociceptive activity of seeds of Trigonella foenumgraecum in rats. Indian J Physiol Pharmacol. 2003;47:479–80.PubMed
39.
go back to reference Reibero RA, Vale ML, Thomazzi SM, Pascholato ABP, Poole S, Ferreira SH, et al. Involvement of resident macrophages and mast cells in the writhing nociceptive response induced by zymosan and acetic acid in mice. Eur J Pharmacol. 2000;387:111–8.CrossRef Reibero RA, Vale ML, Thomazzi SM, Pascholato ABP, Poole S, Ferreira SH, et al. Involvement of resident macrophages and mast cells in the writhing nociceptive response induced by zymosan and acetic acid in mice. Eur J Pharmacol. 2000;387:111–8.CrossRef
40.
go back to reference Malmberg AB, Yaksh TL. Antinociceptive actions of spinal nonsteroidal anti-inflammatory agents on the formalin test in the rat. J Pharm Exp Ther. 1992;263:136–46. Malmberg AB, Yaksh TL. Antinociceptive actions of spinal nonsteroidal anti-inflammatory agents on the formalin test in the rat. J Pharm Exp Ther. 1992;263:136–46.
41.
go back to reference Verma PR, Joharapurkar AA, Chatpalliwar VA, Asnani AJ. Antinociceptive activity of alcoholic extract of Hemidesmus indicus R.Br. in mice. J Ethnopharmacol. 2005;102:298–301.CrossRefPubMed Verma PR, Joharapurkar AA, Chatpalliwar VA, Asnani AJ. Antinociceptive activity of alcoholic extract of Hemidesmus indicus R.Br. in mice. J Ethnopharmacol. 2005;102:298–301.CrossRefPubMed
42.
go back to reference Hunskaar S, Hole K. The formalin test in mice: dissociation between inflammatory and non-inflammatory pain. Pain. 1987;30:103–14.CrossRefPubMed Hunskaar S, Hole K. The formalin test in mice: dissociation between inflammatory and non-inflammatory pain. Pain. 1987;30:103–14.CrossRefPubMed
43.
go back to reference Tang L, Chen Y, Chen Z, Blumberg PM, Kozikowski AP, Wang ZJ. Antinociceptive pharmacology of N-(4-chlorobenzyl)-N’-(4-hydroxy-3-iodo-5-methoxybenzyl) thiourea, a high-affinity competitive antagonist of the transient receptor potential vanilloid 1 receptor. J Pharm Exp Ther. 2007;321:791–8.CrossRef Tang L, Chen Y, Chen Z, Blumberg PM, Kozikowski AP, Wang ZJ. Antinociceptive pharmacology of N-(4-chlorobenzyl)-N’-(4-hydroxy-3-iodo-5-methoxybenzyl) thiourea, a high-affinity competitive antagonist of the transient receptor potential vanilloid 1 receptor. J Pharm Exp Ther. 2007;321:791–8.CrossRef
44.
go back to reference Shibata M, Ohkubo T, Takahashi H, Inoki R. Modified formalin test: characteristic biphasic pain response. Pain. 1989;38:347–52.CrossRefPubMed Shibata M, Ohkubo T, Takahashi H, Inoki R. Modified formalin test: characteristic biphasic pain response. Pain. 1989;38:347–52.CrossRefPubMed
45.
go back to reference Mohammad I, Mohamad Y, Mohammad ZS, Teh LK, Norizan A, Nik FNA, et al. Activity-guided isolation of bioactive constituents with antinociceptive activity from Muntingia calabura L. Leaves using the formalin test. Evid Based Complement Alternat Med. 2013;2013:1–9. Mohammad I, Mohamad Y, Mohammad ZS, Teh LK, Norizan A, Nik FNA, et al. Activity-guided isolation of bioactive constituents with antinociceptive activity from Muntingia calabura L. Leaves using the formalin test. Evid Based Complement Alternat Med. 2013;2013:1–9.
46.
go back to reference Manju B, Jagtap AG. Exploring the possible mechanisms of action behind the antinociceptive activity of Bacopa monniera. Int J Ayurveda Res. 2011;2:2–7.CrossRef Manju B, Jagtap AG. Exploring the possible mechanisms of action behind the antinociceptive activity of Bacopa monniera. Int J Ayurveda Res. 2011;2:2–7.CrossRef
47.
go back to reference Curdy CRM, Scully SS. Analgesic substances derived from natural products (natureceuticals). Life Sci. 2005;78:476–84.CrossRef Curdy CRM, Scully SS. Analgesic substances derived from natural products (natureceuticals). Life Sci. 2005;78:476–84.CrossRef
48.
go back to reference Jinsmaa Y, Okada Y, Tsuda Y, Sasak Y, Ambo A, Bryant SD, et al. Novel 2′,6′ dimethyl-l-tyrosine-containing pyrazinone opioid mimetic A agonists with potent antinociceptive activity in mice. J Pharmacol Exp Ther. 2004;309:1–7. Jinsmaa Y, Okada Y, Tsuda Y, Sasak Y, Ambo A, Bryant SD, et al. Novel 2′,6′ dimethyl-l-tyrosine-containing pyrazinone opioid mimetic A agonists with potent antinociceptive activity in mice. J Pharmacol Exp Ther. 2004;309:1–7.
Metadata
Title
Scientific investigation of crude alkaloids from medicinal plants for the management of pain
Authors
Mohammad Shoaib
Syed Wadood Ali Shah
Niaz Ali
Ismail Shah
Shafi Ullah
Mehreen Ghias
Muhammad Nawaz Tahir
Farah Gul
Sohail Akhtar
Abd Ullah
Wajid Akbar
Asad Ullah
Publication date
01-12-2016
Publisher
BioMed Central
Published in
BMC Complementary Medicine and Therapies / Issue 1/2016
Electronic ISSN: 2662-7671
DOI
https://doi.org/10.1186/s12906-016-1157-2

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