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Governa P, Romagnoli G, Albanese P, Rossi F, Manetti F, Biagi M. Effect of in vitro simulated digestion on the anti- Helicobacter Pylori activity of different Propolis extracts. J Enzyme Inhib Med Chem 2023; 38:2183810. [PMID: 36916299 PMCID: PMC10026752 DOI: 10.1080/14756366.2023.2183810] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/15/2023] Open
Abstract
Helicobacter pylori (HP) is among the most common pathogens causing infection in humans worldwide. Oxidative stress and gastric inflammation are involved in the progression of HP-related gastric diseases, and they can be targeted by integrating conventional antibiotic treatment with polyphenol-enriched natural products. In this work, we characterised three different propolis extracts and evaluated their stability under in vitro simulated gastric digestion, compared to their main constituents alone. The extract with the highest stability to digestion (namely, the dark propolis extract, DPE) showed a minimum bactericidal concentration (MBC) lower than 1 mg/mL on HP strains with different virulence factors. Finally, since urease is one of the virulence factors contributing to the establishment of a microenvironment that promotes HP infection, we evaluated the possible inhibition of this enzyme by using molecular docking simulations and in vitro colorimetric assay, showing that galangin and pinocembrin may be involved in this activity.
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Affiliation(s)
- Paolo Governa
- Department of Biotechnology, Chemistry and Pharmacy, University of Siena, Siena, Italy
| | - Giulia Romagnoli
- Department of Biotechnology, Chemistry and Pharmacy, University of Siena, Siena, Italy
| | - Paola Albanese
- Department of Physical Sciences, Earth and Environment, University of Siena, Siena, Italy
| | - Federico Rossi
- Department of Physical Sciences, Earth and Environment, University of Siena, Siena, Italy
| | - Fabrizio Manetti
- Department of Biotechnology, Chemistry and Pharmacy, University of Siena, Siena, Italy
| | - Marco Biagi
- Department of Physical Sciences, Earth and Environment, University of Siena, Siena, Italy
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Anti-Helicobacter pylori, anti-Inflammatory, and Antioxidant Activities of Trunk Bark of Alstonia boonei (Apocynaceae). BIOMED RESEARCH INTERNATIONAL 2022; 2022:9022135. [PMID: 36158881 PMCID: PMC9499789 DOI: 10.1155/2022/9022135] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/18/2022] [Accepted: 08/25/2022] [Indexed: 12/14/2022]
Abstract
An ulcer is an erosion of the gastric mucosa that occurs following an imbalance between the aggression and protective factors and/or an infection with Helicobacter pylori (H. pylori). About 90-100% of duodenal ulcers and 70-80% of gastric ulcers are caused by H. pylori. The objective of this work was to evaluate in vitro the anti-H. pylori activity and then the anti-inflammatory and antioxidant properties of aqueous and methanol extracts of Alstonia boonei. The anti-H. pylori tests (CMI and antiureasic activity) were determined using the agar well diffusion method, the microbroth dilution method, and the measurement of ammonia production by the indophenol method; the anti-inflammatory properties were evaluated by inhibition of proteinases, denaturation of albumin, production of NO by macrophages, cell viability, and hemolysis of red blood cells by heat; then, the antioxidant properties were evaluated by the FRAP method (ferric reducing antioxidant power) and the DPPH (1,1-diphenyl-2-picrylhydrazyl) test. The results show that the best trapping of the DPPH radical was obtained with the methanol extract (EC50 = 8.91 μg/mL) compared to the aqueous extract (EC50 = 19.86 μg/mL). The methanol extract also showed greater iron-reducing activity than the aqueous extract and vitamin C. Furthermore, at the concentration of 200 μg/mL, the methanol extract showed a percentage (96.34%) strains of H. pylori higher than that of the aqueous extract (88.52%). The MIC90 of the methanol extract was lower than that of the aqueous extract. The methanol extract showed a higher percentage inhibition (85%) of urease than the aqueous extract (73%). The methanol extract at a concentration of 1000 μg/mL showed the greatest ability to inhibit proteinase activity, albumin denaturation, and red blood cell hemolysis; on the other hand, maximum cell viability and greater production of nitrite oxide by macrophages were obtained with the aqueous extract. Aqueous and methanol extracts of Alstonia boonei possess anti-H. pylori which would probably be linked to their antioxidant and anti-inflammatory properties.
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Khurshid U, Ahmad S, Saleem H, LodhI AH, Pervaiz I, Khan MA, Khan H, AlamrI A, AnsarI M, LocatellI M, Arshad MA, Wazir MA, Butt J, Anwar S. Multifaced Assessment of Antioxidant Power, Phytochemical Metabolomics, In-Vitro Biological Potential and In-Silico Studies of Neurada procumbens L.: An Important Medicinal Plant. MOLECULES (BASEL, SWITZERLAND) 2022; 27:molecules27185849. [PMID: 36144585 PMCID: PMC9501585 DOI: 10.3390/molecules27185849] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/04/2022] [Revised: 08/31/2022] [Accepted: 09/01/2022] [Indexed: 11/20/2022]
Abstract
This work was undertaken to explore the phytochemical composition, antioxidant, and enzyme-inhibiting properties of Neurada procumbens L. extracts/fractions of varying polarity (methanol extract and its fractions including n-hexane, chloroform, n-butanol, and aqueous fractions). A preliminary phytochemical study of all extracts/fractions, HPLC-PDA polyphenolic quantification, and GC-MS analysis of the n-hexane fraction were used to identify the phytochemical makeup. Antioxidant (DPPH), enzyme inhibition (against xanthine oxidase, carbonic anhydrase, and urease enzymes), and antibacterial activities against seven bacterial strains were performed for biological investigation. The GC-MS analysis revealed the tentative identification of 22 distinct phytochemicals in the n-hexane fraction, the majority of which belonged to the phenol, flavonoid, sesquiterpenoid, terpene, fatty acid, sterol, and triterpenoid classes of secondary metabolites. HPLC-PDA analysis quantified syringic acid, 3-OH benzoic acid, t-ferullic acid, naringin, and epicatechin in a significant amount. All of the studied extracts/fractions displayed significant antioxidant capability, with methanol extract exhibiting the highest radical-scavenging activity, as measured by an inhibitory percentage of 81.4 ± 0.7 and an IC50 value of 1.3 ± 0.3. For enzyme inhibition experiments, the n-hexane fraction was shown to be highly potent against xanthine oxidase and urease enzymes, with respective IC50 values of 2.3 ± 0.5 and 1.1 ± 0.4 mg/mL. Similarly, the methanol extract demonstrated the strongest activity against the carbonic anhydrase enzyme, with an IC50 value of 2.2 ± 0.4 mg/mL. Moreover, all the studied extracts/fractions presented moderate antibacterial potential against seven bacterial strains. Molecular docking of the five molecules β-amyrin, campesterol, ergosta-4,6,22-trien-3β-ol, stigmasterol, and caryophyllene revealed the interaction of these ligands with the investigated enzyme (xanthine oxidase). The results of the present study suggested that the N. procumbens plant may be evaluated as a possible source of bioactive compounds with multifunctional therapeutic applications.
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Affiliation(s)
- Umair Khurshid
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, The Islamia University of Bahawalpur, Bahawalpur 63100, Pakistan
- Correspondence: (U.K.); (H.S.)
| | - Saeed Ahmad
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, The Islamia University of Bahawalpur, Bahawalpur 63100, Pakistan
| | - Hammad Saleem
- Institute of Pharmaceutical Sciences (IPS), University of Veterinary & Animal Sciences (UVAS), Lahore 54000, Pakistan
- Correspondence: (U.K.); (H.S.)
| | - Arslan Hussain LodhI
- Department of Pharmacology, Faculty of Pharmacy, The Islamia University of Bahawalpur, Bahawalpur 63100, Pakistan
| | - Irfan Pervaiz
- Department of Pharmacy, University of Chenab, Gujrat 50700, Pakistan
| | - Mohsin Abbas Khan
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, The Islamia University of Bahawalpur, Bahawalpur 63100, Pakistan
| | - Haroon Khan
- Gomal Centre of Pharmaceutical Sciences Faculty of Pharmacy, Gomal University, Dera Ismail Khan 29050, Pakistan
| | - Abdulwahab AlamrI
- Department of Pharmacology and Toxicology, College of Pharmacy, University of Hail, Hail 81451, Saudi Arabia
| | - Mukhtar AnsarI
- Department of Clinical Pharmacy, College of Pharmacy, University of Hail, Hail 81451, Saudi Arabia
| | - Marcello LocatellI
- Department of Pharmacy, University ‘G. d’Annunzio” of Chieti-Pescara, 66100 Chieti, Italy
| | - Muhammad Adeel Arshad
- Institute of Pharmacy, Faculty of Pharmaceutical and Allied Health sciences, Lahore College for Women University, Lahore 54000, Pakistan
| | - Muhammad Asif Wazir
- Department of Pharmacognosy, Faculty of Pharmacy, The Islamia University of Bahawalpur, Bahawalpur 63100, Pakistan
| | - Juwairiya Butt
- School of Life Sciences, University of Westminster, 115 New Cavendish Street, London W1W 6UW, UK
| | - Sirajudheen Anwar
- Department of Pharmacology and Toxicology, College of Pharmacy, University of Hail, Hail 81451, Saudi Arabia
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El-Sherbiny GM, Elbestawy MKM. A review – plant essential oils active against Helicobacter pylori. JOURNAL OF ESSENTIAL OIL RESEARCH 2022. [DOI: 10.1080/10412905.2022.2025464] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Gamal M. El-Sherbiny
- Botany and Microbiology Department, Faculty of Science, Al-Azhar University, Nasr City, Egypt
| | - Mahmoud K. M. Elbestawy
- Botany and Microbiology Department, Faculty of Science, Al-Azhar University, Nasr City, Egypt
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Khan A, Khan A, Ahmad M, Ali M, Farooq U, Khan FA, Bukhari SM. Antiglycation potential of Indigoferin a, Indigoferin B and Indigoferin C natural products from Indigofera heterantha Brandis. CLINICAL PHYTOSCIENCE 2021. [DOI: 10.1186/s40816-020-00238-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
Abstract
Background
Diabetes is a long-lasting and serious disease that effect in worldwide individual lives, families, and societies. Hyperglycemia of diabetes mellitus produced Advance Glycation End Products that are associated with diabetic complications like neuropathy, nephropathy, retinopathy, and cardiovascular diseases.
Methods
In this study, the natural products isolated from of Indigofera heterantha Brandis, Indigoferin A (S1), Indigoferin B (S2) and Indigoferin C (S3) were evaluated for their in vitro antiglycation activity.
Results
The compounds exhibited a significant inhibitory activity against the formation of Advanced Glycation End-Products with IC50 values of 674.25 ± 3.2 μM, 407.03 ± 4.7 μM and 726.41 ± 2.1 μM, respectively. Here, important structure-activity relationship was observed, when the intramolecular hydrogen bonding interactions suppressed the antiglycation activity of compound S3. Thus, the study clearly demonstrates that the number and the position of substituents act as an assisting factor and directly influence the inhibitory activity of the natural product by altering the sugar or protein binding affinity.
Conclusions
This study explain first time the antiglycation inhibitory ability of chemical constituents isolated from I. heterantha and can be used for above late diabetic complications.
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The In Vitro Activity of Essential Oils against Helicobacter Pylori Growth and Urease Activity. Molecules 2020; 25:molecules25030586. [PMID: 32013183 PMCID: PMC7037374 DOI: 10.3390/molecules25030586] [Citation(s) in RCA: 46] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2019] [Revised: 01/21/2020] [Accepted: 01/28/2020] [Indexed: 12/23/2022] Open
Abstract
The anti-H. pylori properties of 26 different commercial essential oils were examined in vitro by MIC (minimal inhibitory concentration) determination for the reference strain H. pylori ATCC 43504. We selected 9 essential oils with different anti-Helicobacter activities and established their phytochemical composition and urease inhibition activities. Phytochemical analysis of the selected essential oils by GC-MS method and antioxidant activity were performed. The phenol red method was used to screen the effect of essential oils on urease activity expressed as IC50 (the half of maximal inhibitory concentration). The most active essential oils, with MIC = 15.6 mg/L, were thyme, lemongrass, cedarwood and lemon balm oils; MIC = 31.3 mg/L—oregano oil; MIC = 62.5 mg/L—tea tree oil; MIC = 125 mg/L—pine needle, lemon and silver fir oils with bactericidal effect. Urease activity was inhibited by these oils with IC50 ranged from 5.3 to > 1049.9 mg/L. The most active was cedarwood oil (IC50 = 5.3 mg/L), inhibiting urease at sub-MIC concentrations (MIC = 15.6 mg/L). The statistical principal component analysis allowed for the division of the oils into three phytochemical groups differing in their anti-H. pylori activity. To summarize, the activity in vitro of the five essential oils silver fir, pine needle, tea tree, lemongrass, and cedarwood oils against H. pylori was found in this paper for the first time. The most active against clinical strains of H. pylori were cedar wood and oregano oils. Moreover, cedarwood oil inhibited the urease activity at subinhibitory concentrations. This essential oil can be regarded as a useful component of the plant preparations supporting the eradication H. pylori therapy.
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Hassan STS, Žemlička M. Plant-Derived Urease Inhibitors as Alternative Chemotherapeutic Agents. Arch Pharm (Weinheim) 2016; 349:507-22. [DOI: 10.1002/ardp.201500019] [Citation(s) in RCA: 44] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2015] [Revised: 04/22/2016] [Accepted: 04/26/2016] [Indexed: 01/08/2023]
Affiliation(s)
- Sherif T. S. Hassan
- Faculty of Pharmacy; Department of Natural Drugs; University of Veterinary and Pharmaceutical Sciences Brno; Brno Czech Republic
| | - Milan Žemlička
- Department of Pharmacognosy and Botany; University of Veterinary Medicine and Pharmacy in Košice; Košice Slovak Republic
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Bai S, Bharti P, Seasotiya L, Malik A, Dalal S. In vitro screening and evaluation of some Indian medicinal plants for their potential to inhibit Jack bean and bacterial ureases causing urinary infections. PHARMACEUTICAL BIOLOGY 2015; 53:326-333. [PMID: 25366133 DOI: 10.3109/13880209.2014.918158] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
CONTEXT Bacterial ureases play an important role in pathogenesis of urinary infections. Selection of plants was done on the basis of their uses by the local people for the treatment of various bacterial and urinary infections. OBJECTIVE Our investigation screens and evaluates 15 Indian medicinal plants for their possible urease inhibitory activity as well as their ability to inhibit bacteria causing urinary infections. MATERIALS AND METHODS Plant extracts in three different solvents (methanol, aqueous, and cow urine) were screened for their effect on Jack-bean urease using the phenol-hypochlorite method. Subsequently, seven bacterial strains were screened for their ability to release urease and further antimicrobial-linked urease inhibition activity and minimum inhibitory concentration of the tested extracts were evaluated by the agar well diffusion and microdilution method, respectively. RESULTS Five plants out of 15 crude extracts revealed good urease inhibitory activity (≥ 20% at 1 mg/ml conc.) and IC50 values for these extracts ranged from 2.77 to 0.70 mg/ml. Further testing of these extracts on urease-producing bacterial strains (Staphylococcus aureus NCDC 109, S. aureus MTCC 3160, Proteus vulgaris MTCC 426, Klebsiella pneumoniae MTCC 4030, and Pseudomonas aeruginosa MTCC 7453) showed good anti-urease potency with an MIC ranging from 500 to 7.3 µg/ml. DISCUSSION AND CONCLUSION The results of screening as well as susceptibility assay clearly revealed a strong urease inhibitory effect of Acacia nilotica L. (Fabaceae), Emblica officinalis Gaertn. (Phyllanthaceae), Psidium guajava L. (Myrtaceae), Rosa indica L. (Rosaceae), and Terminalia chebula Retz. (Combretaceae). Our findings may help to explain the beneficial effect of these plants against infections associated with the urease enzyme.
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Affiliation(s)
- Sheema Bai
- Department of Biotechnology, Kurukshetra University , Kurukshetra, Haryana , India
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Jamil Ahmed M, Murtaza G. A study of medicinal plants used as ethnoveterinary: harnessing potential phytotherapy in Bheri, District Muzaffarabad (Pakistan). JOURNAL OF ETHNOPHARMACOLOGY 2015; 159:209-14. [PMID: 25449452 DOI: 10.1016/j.jep.2014.11.016] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/05/2014] [Revised: 11/06/2014] [Accepted: 11/08/2014] [Indexed: 05/18/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Medicinal plants are utilized for handling health care system and in preventing a variety of diseases. A survey was conducted to document the rapidly disappearing traditional knowledge of medicinal plants in union council Bheri, District Muzaffarabad, Azad Kashmir, Pakistan. MATERIALS AND METHODS Questionnaire format was used to collect the medicinal uses of plants. The 180 informants were interviewed from six villages in total, 30 from each village (20 male and 10 female) regarding the ethnoveterinary uses of plants in several ailments. For the reliability of ethnoveterinary knowledge, the informant consensus factor (FIC), and fidelity level (FL) were calculated and the literature cited was surveyed. The medicinal information was gathered from local inhabitants, healers, shepherds and old men and women of different age groups. RESULTS A total of 24 medicinal plant species used as ethnoveterinary were found belonging to 22 genera and 19 families. The most dominant family was Polygonaceae (3 species) followed by Araceae, Asteraceae, Lamiaceae each with 2 species and remaining families having one species. The important medicinal plant species showed the highest fidelity level (FL) such as: Rumex nepalensis, Primula denticulata, (100%) used for dysuria, red urination, Skimmia laureola (100%), Swertia paniculata (99%), and Angelica glauca (97%), used for ague, cold, shivering, gastric ailments, Melia azedarach (100%), used to reduce intestinal worm load in cattle showing the conformity of knowledge on these species. Highest FIC was recorded for foot and mouth diseases and ectoparasite (1) followed by ague (0.98) and dysuria (0.99) depicting that a few species were used to cure various animals׳ ailments. CONCLUSIONS The findings of the research revealed that merely a few species are used as ethnoveterinary medicine supported by pharmacology study. Due to anthropogenic pressure the extinction of each species from the areas could result in disappearing knowledge regarding century׳s old traditional methods of curing diseases from these plant species.
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Affiliation(s)
- Muhammad Jamil Ahmed
- Department of Botany, University of Azad Jammu and Kashmir, Muzaffarabad, Pakistan.
| | - Ghulam Murtaza
- Department of Botany, University of Azad Jammu and Kashmir, Muzaffarabad, Pakistan
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Khan R, Quradha MM, Saif AQ, Ali J, Rauf A, Khan A. Comparative urease enzyme inhibition profile of leaves and stems ofRumex nervosusvahl. Nat Prod Res 2014; 28:2355-7. [DOI: 10.1080/14786419.2014.940346] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Khan H, Khan MA. Antiulcer Effect of Extract/Fractions of Eruca sativa: Attenuation of Urease Activity. J Evid Based Complementary Altern Med 2014; 19:176-180. [PMID: 24647097 DOI: 10.1177/2156587214527452] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Eruca sativa (Rocket salad) is known for its antiulcer properties in the traditional system of treatment. The present study was, therefore, designed to scrutinize its effect on urease activity in vitro. The results demonstrated marked attenuation of urease by the crude extract of various test concentrations with IC50 value of 7.77 mg/mL. On fractionation, marked change in inhibitory profile was observed. The ethyl acetate fraction was the most potent urease inhibitor with IC50 value of 4.17 mg/mL followed by the aqueous fraction with an IC50 value of 5.83 mg/mL. However, hexane did not show significant urease inhibition. In conclusion, the present study illustrated strong antagonism of urease activity and thus validated scientifically the traditional use of the plant in the treatment of ulcers.
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Affiliation(s)
- Haroon Khan
- 1 Department of Pharmacy, Adbul Wali Khan University, Mardan, Pakistan
| | - Murad Ali Khan
- 2 Department of Chemistry, Kohat University of Science and Technology, Kohat, Pakistan
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Urease Inhibitory Activity of Aerial Parts of Artemisia scoparia: Exploration in an In Vitro Study. ACTA ACUST UNITED AC 2014. [DOI: 10.1155/2014/184736] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Artimisia scoparia has been used in the treatment of different disorders including ulcers. The current study was therefore designed to investigate the aerial parts of Artemisia scoparia (crude extract, total sterol and flavonoidal contents, and aqueous fraction) for its urease inhibitory potential. The crude of the plant evoked marked attenuation on urease activity, when tested in various concentrations with IC50 values of 4.06 mg/ml. The inhibitory potential was further augmented in the aqueous fraction (IC50: 2.30 mg/ml) of the plant. When the total sterol and flavonoidal contents were challenged against urease, both showed concentration dependent activity; the latter showed maximum potency with IC50 values of 8.04 and 2.10 mg/ml, respectively. In short, the aerial parts of the plant demonstrated marked antagonism on urease and thus our study validated the traditional use of Artemisia scoparia in the treatment of ulcer.
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Khan H, Saeed M, Muhammad N, Gaffar R, Gul F, Raziq N. Lipoxygenase and urease inhibition of the aerial parts of the Polygonatum verticillatum. Toxicol Ind Health 2013; 31:758-63. [PMID: 23552263 DOI: 10.1177/0748233713483197] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Over expression of lipoxygenase (LOX) and urease has already contributed to the pathology of different human disease. Targeting the inhibition of these enzymes has proved great clinical utility. The aim of the present study was to scrutinised the inhibitory profile of the aerial parts of the Polygonatum verticillatum enzyme against LOX, urease, acetylcholinesterase (AChE) and butyrylcholinesterase (BChE) using standard experimental protocols. When checked against lipoxygenase, the extracts revealed significant attenuation. Of the tested extracts, the ethyl acetate fraction was the most potent (half-maximal inhibitory concentration (IC(50)): 97 µg/mL) followed by aqueous fraction IC(50): 109 µg/mL). Regarding urease inhibition, n-butanol was the most potent fraction (IC(50): 97 µg/mL). However, the extracts did not show significant inhibition on AChE and BChE. In the preliminary phytochemical tests, the aerial parts of the plant showed the presence of saponins, alkaloids, flavonoids, phenols, tannins and terpenoids. The current findings could be attributed to these groups of compounds.
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Affiliation(s)
- Haroon Khan
- Gandhara College of Pharmacy, Gandhara University, Peshawar, Pakistan Department of Pharmacy, Abdul Wali Khan University, Mardan, Pakistan
| | - Muhammad Saeed
- Department of Pharmacy, University of Peshawar, Peshawar, Pakistan
| | - Naveed Muhammad
- Department of Pharmacy, University of Peshawar, Peshawar, Pakistan
| | - Rukhsana Gaffar
- Department of Pharmacy, University of Peshawar, Peshawar, Pakistan
| | - Farah Gul
- Department of Pharmacy, University of Peshawar, Peshawar, Pakistan
| | - Naila Raziq
- Department of Pharmacy, University of Peshawar, Peshawar, Pakistan
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Amin M, Anwar F, Naz F, Mehmood T, Saari N. Anti-Helicobacter pylori and urease inhibition activities of some traditional medicinal plants. Molecules 2013; 18:2135-49. [PMID: 23434867 PMCID: PMC6270356 DOI: 10.3390/molecules18022135] [Citation(s) in RCA: 65] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2012] [Revised: 01/22/2013] [Accepted: 01/23/2013] [Indexed: 02/06/2023] Open
Abstract
Different parts of Acacia nilotica (L.) Delile, Calotropis procera (Aiton) W.T. Aiton, Adhatoda vasica Nees, Fagoniaar abica L. and Casuarina equisetifolia L. are traditionally used in folk medicine for the treatment of a variety of common ailments like nausea, cold, cough, asthma, fevers, diarrhea, sore throat, swelling, etc. The present study was aimed to evaluate the anti-Helicobacter pylori and urease inhibition activities of extracts produced from the above selected medicinal plants native to Soon Valley (home to an old civilization) in the Punjab province of Pakistan. Methanol, acetone and water extracts of the plants were evaluated for anti-bacterial activity against thirty four clinical isolates and two reference strains of H. pylori. Minimum inhibitory concentrations (MICs) of the extracts were determined using the agar dilution method and compared with some standard antibiotics like amoxicillin (AMX), clarithromycin (CLA), tetracycline (TET) and metronidazole (MNZ), used in the triple therapy for H. pylori eradication. H. pylori urease inhibition activity of the extracts was assessed by the phenol red method, wherein, Lineweaver-Burk plots were used to determine Michaelis-Menten constants for elucidating the mechanism of inhibition. Methanol and acetone extracts from Acacia nilotica and Calotropis procera exhibited stronger anti-H. pylori activity than MNZ, almost comparable activity with TET, but were found to be less potent than AMX and CLT. The rest of the extracts exhibited lower activity than the standard antibiotics used in this study. In the H. pylori urease inhibitory assay, methanol and acetone extracts of Acacia nilotica and Calotropis procera showed significant inhibition. Lineweaver-Burk plots indicated a competitive mechanism for extract of Acacia nilotica, whereas extract of Calotropis procera exhibited a mixed type of inhibition.
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Affiliation(s)
- Muhammad Amin
- Department of Chemistry, University of Sargodha, Sargodha-40100, Pakistan; E-Mails: (M.A.); (F.N.); (T.M.)
| | - Farooq Anwar
- Department of Chemistry, University of Sargodha, Sargodha-40100, Pakistan; E-Mails: (M.A.); (F.N.); (T.M.)
| | - Fauqia Naz
- Department of Chemistry, University of Sargodha, Sargodha-40100, Pakistan; E-Mails: (M.A.); (F.N.); (T.M.)
| | - Tahir Mehmood
- Department of Chemistry, University of Sargodha, Sargodha-40100, Pakistan; E-Mails: (M.A.); (F.N.); (T.M.)
| | - Nazamid Saari
- Faculty of Food Science and Technology, Universiti Putra Malaysia, 43400 UPM, Serdang, Selangor, Malaysia
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