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Kamsu GT, Ndebia EJ. Usefulness of Natural Phenolic Compounds in the Fight against Esophageal Cancer: A Systematic Review. FUTURE PHARMACOLOGY 2024; 4:626-650. [DOI: 10.3390/futurepharmacol4030034] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/14/2024]
Abstract
Esophageal cancer (EC) is a very common form of cancer in developing countries, and its exponential progression is a cause for concern. Available treatments face the phenomenon of multi-drug resistance, as well as multiple disabling side effects. The number of deaths is expected to double by 2030 if nothing is done. Due to their high representativeness in plants, phenolic compounds are a potential alternative for halting the spread of this disease, which bereaves many thousands of families every year. This study aims to identify phenolic compounds with activity against esophageal cancer, assess their toxicological profiles, and explore future perspectives. To achieve this, the literature search was meticulously carried out in the Google Scholar, Scopus, Web of Sciences, and Pub-Med/Medline databases, in accordance with the PRISMA 2020 guidelines. The results show that proanthocyanidin and curcumin represent promising therapeutic options, given their significant in vitro and in vivo activity, and their safety in human subjects in clinical trials. Moscatilin, Genistein, and pristimerin have anticancer activities (≤10 µM) very close to those of doxorubicin and 5-FU, although their safety has not yet been fully established. The compounds identified in vivo exhibit highly significant activities compared with the results obtained in vitro, and are sometimes more effective than the molecules conventionally used to treat EC. Generally, with the exceptions of plumbagin, lapachol, and β-lapachone, all other molecules are relatively non-toxic to normal human cells and represent a therapeutic avenue to be explored by pharmaceutical companies in the fight against esophageal cancer. However, more detailed toxicological studies of certain molecules remain a priority.
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Affiliation(s)
- Gabriel Tchuente Kamsu
- Department of Human Biology, Faculty of Medicine and Health Sciences, Walter Sisulu University, Mthatha 5100, South Africa
| | - Eugene Jamot Ndebia
- Department of Human Biology, Faculty of Medicine and Health Sciences, Walter Sisulu University, Mthatha 5100, South Africa
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Kamsu GT, Ndebia EJ. A Comprehensive Review of the Ethnobotanical Uses, Pharmacological, and Toxicological Profiles of Piper capense L.f. (Piperaceae). DRUGS AND DRUG CANDIDATES 2024; 3:598-614. [DOI: 10.3390/ddc3030034] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/14/2024]
Abstract
Commonly known as wild pepper, Piper capense (P. capense) is a culinary herb mainly used as a secret in preparation of “Nkui” and “Nah poh” in Bayangam, West Cameroon. However, it also has many interesting pharmacological properties, which is why the people of sub-Saharan Africa so highly prize it for the treatment of multiple human pathologies. This study aimed to highlight the traditional uses, phytochemical composition, biological activities, and toxicological profile of the P. capense plant, to draw the attention of pharmaceutical companies to its enormous potential for the development of future phyto- or pharmaceutical products. Documentary research was meticulously carried out in the Web of Sciences, Scopus, Pubmed/Medline, and Google Scholar databases according to PRISMA 2020 guidelines. The results show that extracts and compounds isolated from Piper capense have interesting anticancer, antibacterial, antimalarial, hypoglycemic, anti-epileptic, and antidepressant activities. Methanolic extracts and essential oils from P. capense exhibit no harmful effects when directly applied to normal human hepatocytes, umbilical cord cells, intestinal cells, and keratinocyte cell lines. Additionally, methanolic extracts administered acutely or subchronically at low doses (≤250 mg/kg body weight) in Wistar rats also demonstrate no adverse effects. In conclusion, given its interesting activities, P. capense is a viable option for developing new antimalarial, anticancer, antibacterial, hypoglycemic, anti-epileptic, and antidepressant drugs. However, many avenues still need to be explored before translation into drugs.
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Affiliation(s)
- Gabriel Tchuente Kamsu
- Department of Human Biology, Faculty of Medicine and Health Sciences, Walter Sisulu University, 5117 Nelson Mandela Drive, Mthatha 5100, South Africa
| | - Eugene Jamot Ndebia
- Department of Human Biology, Faculty of Medicine and Health Sciences, Walter Sisulu University, 5117 Nelson Mandela Drive, Mthatha 5100, South Africa
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Ghosh AK, Panda SK, Hu H, Schoofs L, Luyten W. Compound isolation through bioassay-guided fractionation of Tectona grandis leaf extract against Vibrio pathogens in shrimp. Int Microbiol 2024; 27:1195-1204. [PMID: 38151632 DOI: 10.1007/s10123-023-00468-5] [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: 08/11/2023] [Revised: 11/02/2023] [Accepted: 12/08/2023] [Indexed: 12/29/2023]
Abstract
Tectona grandis Linn, commonly known as teak, is traditionally used to treat a range of diseases, including the common cold, headaches, bronchitis, scabies, diabetes, inflammation, and others. The present study was conducted with the purpose of isolating and identifying the active compounds in T. grandis leaf against a panel of Vibrio spp., which may induce vibriosis in shrimp, using bioassay-guided purification. The antimicrobial activity was assessed using the microdilution method, followed by the brine shrimp lethality assay to determine toxicity. Following an initial screening with a number of different solvents, it was established that the acetone extract was the most effective. The acetone extract was then exposed to silica gel chromatography followed by reversed-phase HPLC and further UHPLC-orbitrap-ion trap mass spectrometry to identify the active compounds. Three compounds called 1-hydroxy-2,6,8-trimethoxy-9,10-anthraquinone, deoxyanserinone B, and khatmiamycin were identified with substantial anti-microbial action against V. parahaemolyticus, V. alginolyticus, V. harveyi, V. anguillarum, and V. vulnificus. The IC50 values of the three compounds viz. 1-hydroxy-2,6,8-trimethoxy-9,10-anthraquinone, deoxyanserinone B, and khatmiamycin varied between 2 and 28, 7 and 38, and 7 and 56 μg/mL, respectively, which are as good as the standard antibiotics such as amoxicillin and others. The in vivo toxicity test revealed that the compounds were non-toxic to shrimp. The results of the study suggest that T. grandis leaf can be used as a source of bioactive compounds to treat Vibrio species in shrimp farming.
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Affiliation(s)
- Alokesh Kumar Ghosh
- Fisheries and Marine Resource Technology Discipline, Khulna University, Sher-E-Bangla Rd, Khulna, 9208, Bangladesh.
| | - Sujogya Kumar Panda
- Center of Environment Climate Change and Public Health, Utkal University, Vani Vihar, Bhubaneswar, Odisha, 751004, India
| | - Haibo Hu
- School of Pharmacy, Gannan Medical University, Zhanggong District, Ganzhou, Jiangxi, China
| | - Liliane Schoofs
- Animal Physiology and Neurobiology Section, Department of Biology, Faculty of Science, KU Leuven, Naamsestraat 59 - box 2465, 3000, Leuven, Belgium
| | - Walter Luyten
- Animal Physiology and Neurobiology Section, Department of Biology, Faculty of Science, KU Leuven, Naamsestraat 59 - box 2465, 3000, Leuven, Belgium
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Antwi-Adjei M, Obese E, Adakudugu EA, Henneh IT, Biney RP, Aboagye B, Amoani B, Anokwah D, Ameyaw EO. Modulating Effects of the Hydroethanolic Leaf Extract of Persicaria lanigera R. Br. Soják (Polygonaceae) against Acute Inflammation. ScientificWorldJournal 2023; 2023:5567410. [PMID: 37469933 PMCID: PMC10352536 DOI: 10.1155/2023/5567410] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2023] [Revised: 06/27/2023] [Accepted: 06/29/2023] [Indexed: 07/21/2023] Open
Abstract
Plant species have been used traditionally to treat numerous inflammatory disorders because of their known medicinal properties. This study aimed to assess the anti-inflammatory effect of aqueous ethanolic leaf extract of Persicaria lanigera using acute inflammatory models. The safety profile of the Persicaria lanigera extract was assessed using an acute toxicity model. The anti-inflammatory effect of the Persicaria lanigera leaf extract (100-600 mg·kg-1, p.o.) was studied in carrageenan-induced paw oedema, zymosan-induced knee joint arthritis, and histamine-induced paw oedema in Sprague-Dawley rats (n = 5). It was observed that the Persicaria lanigera leaf extract administered prophylactically significantly inhibited paw oedema from 99.01 ± 12.59 to 59.10 ± 4.94%, 56.08 ± 3.65%, and 48.62 ± 3.27% at 100 mg·kg-1, 300 mg·kg-1, and 600 mg·kg-1, while the standard drug, aspirin, showed 41.84 ± 9.25% in carrageenan-induced paw oedema, respectively. Furthermore, the extract decreased knee joint inflammation significantly from 62.43 ± 5.73% to 32.07 ± 2.98% and 24.33 ± 8.58% at 300 mg·kg-1 and 600 mg·kg-1 in zymosan-induced knee joint inflammation, respectively. In the histamine-induced paw oedema model, the extract significantly inhibited oedema to 61.53 ± 9.17%, 54.21 ± 9.38%, and 54.22 ± 9.37% at the same doses. Aqueous ethanolic leaf extract of Persicaria lanigera is safe and attenuates inflammation in acute inflammation models.
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Affiliation(s)
- Meshack Antwi-Adjei
- Department of Pharmacology, School of Medical Sciences, University of Cape Coast, Cape Coast, Ghana
| | - Ernest Obese
- Department of Pharmacotherapeutics and Pharmacy Practice, School of Pharmacy and Pharmaceutical Sciences, University of Cape Coast, Cape Coast, Ghana
| | - Emmanuel Awiintig Adakudugu
- Department of Pharmacotherapeutics and Pharmacy Practice, School of Pharmacy and Pharmaceutical Sciences, University of Cape Coast, Cape Coast, Ghana
| | - Isaac Tabiri Henneh
- Department of Pharmacotherapeutics and Pharmacy Practice, School of Pharmacy and Pharmaceutical Sciences, University of Cape Coast, Cape Coast, Ghana
| | - Robert Peter Biney
- Department of Pharmacotherapeutics and Pharmacy Practice, School of Pharmacy and Pharmaceutical Sciences, University of Cape Coast, Cape Coast, Ghana
| | - Benjamin Aboagye
- Department of Forensic Sciences, School of Biological Sciences, University of Cape Coast, Cape Coast, Ghana
| | - Benjamin Amoani
- Department of Biomedical Sciences, School of Allied Health Sciences, University of Cape Coast, Cape Coast, Ghana
| | - Daniel Anokwah
- Department of Pharmacognosy and Herbal Medicine, School of Pharmacy and Pharmaceutical Sciences, University of Cape Coast, Cape Coast, Ghana
| | - Elvis Ofori Ameyaw
- Department of Pharmacotherapeutics and Pharmacy Practice, School of Pharmacy and Pharmaceutical Sciences, University of Cape Coast, Cape Coast, Ghana
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Nakakaawa L, Gbala ID, Cheseto X, Bargul JL, Wesonga JM. Oral acute, sub-acute toxicity and phytochemical profile of Brassica carinata A. Braun microgreens ethanolic extract in Wistar rats. JOURNAL OF ETHNOPHARMACOLOGY 2023; 305:116121. [PMID: 36599374 DOI: 10.1016/j.jep.2022.116121] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/14/2022] [Revised: 12/24/2022] [Accepted: 12/27/2022] [Indexed: 06/17/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Currently, there is a remarkable increase in the consumption of microgreens, (young edible vegetables or herbs), as potential nutraceuticals for the management of diseases. Brassica carinata A. Braun is one of the traditional leafy vegetables cultivated in various parts of Sub- Saharan Africa. The plant is revered for its efficacy in the treatment of wounds and gastrointestinal disorders among other medicinal benefits. It is therefore crucial to characterize Brassica carinata microgreens for their phytoconstituents and ascertain their safety for use. AIM OF THE STUDY The study evaluated the oral acute and subacute toxicity of Brassica carinata microgreens ethanol extract (BMEE) in Wistar rats and identification of its chemical composition and profile. MATERIALS AND METHODS For acute toxicity (14 days), rats were grouped into four and received a single oral dose, the control group received distilled water, while others received 500 mg/kg, 1000 mg/kg, and 2000 mg/kg of BMEE. For the subacute toxicity (28 days), rats in four groups received daily doses of 250 mg/kg, 500 mg/kg or 1000 mg/kg and distilled water. Daily clinical observations like lethargy and mortality were conducted. Hematological, biochemical, and histopathological evaluations were performed at the end of each experiment. Phytochemical profile was determined using a UV-VIS spectrophotometer and Gas Chromatography coupled to Mass Spectrometry (GC-MS) analysis determined the potential bioactive components in the microgreens extract. RESULTS In both acute and sub-acute toxicity studies, no mortalities, indications of abnormality, or any treatment related adverse effects were observed at doses of 2000 mg/kg, 1000 mg/kg, 500 mg/kg, and 250 mg/kg. The LD50 of BMEE was above 2000 mg/kg. No significant (p > 0.05) changes in the hematological and biochemical parameters of the treated groups compared to the control groups in both studies. Histopathological examination of the liver, kidney, lungs, and heart revealed a normal architecture of the tissues in all the treated animals. Phytochemical analyses revealed the presence of flavonoids (most abundant), phenols and alkaloids. Phytol, linoleic acid, and 9,12,15-octadecatrienoic acid, among other compounds, were identified by GC-MS analysis. CONCLUSION The results showed that B. carinata microgreens ethanol extract is nontoxic and found to have several compounds with reported pharmacological significance suggesting safety for use.
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Affiliation(s)
- Lilian Nakakaawa
- Department of Molecular Biology and Biotechnology, Pan African University Institute for Basic, Sciences Technology, and Innovation (PAUSTI), Juja, Kenya.
| | - Ifeoluwa D Gbala
- Department of Molecular Biology and Biotechnology, Pan African University Institute for Basic, Sciences Technology, and Innovation (PAUSTI), Juja, Kenya.
| | - Xavier Cheseto
- International Centre of Insect Physiology and Ecology (icipe), Nairobi, Kenya.
| | - Joel L Bargul
- International Centre of Insect Physiology and Ecology (icipe), Nairobi, Kenya; Department of Biochemistry, Jomo Kenyatta University of Agriculture and Technology (JKUAT), Juja, Kenya.
| | - John M Wesonga
- Department of Horticulture and Food Security, JKUAT, Juja, Kenya.
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Ahmed MA, Ameyaw EO, Ackah-Armah F, Acheampong DO, Gathumbi PK, Adinortey MB, Ghartey-Kwansah G, Otsyina HR, Adokoh CK. In Vitro and In Vivo Toxicological Evaluation of Avicennia africana P: Beauv. (Avicenniaceae) Leaf Extract in a Rat Model. J Toxicol 2022; 2022:3434383. [PMID: 36388260 PMCID: PMC9663239 DOI: 10.1155/2022/3434383] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2022] [Revised: 09/17/2022] [Accepted: 10/12/2022] [Indexed: 03/28/2024] Open
Abstract
Avicennia africana is an important ethnomedicinal plant that has long been used to treat malaria and several other diseases. Despite the plant's antimalarial and other therapeutic properties, there is limited evidence-based data on its potential toxicity. Hence, the purpose of the current study was to assess the safety of A. africana leaf ethanolic extract (AAE). The study was designed to ascertain the cytotoxic effects of the crude extract on red blood cells (RBCs) as well as the acute and subacute toxicity in Wistar albino rats in accordance with Organization for Economic Co-operation and Development (OECD) guidelines "Test No. 423" and CPMW/SWP/1042/99. The pulverized, shade-dried plant leaves were sequentially macerated with 70% ethanol to obtain the crude extract (AAE). The extract's cytotoxic activity (CC50) against the uninfected human red blood cells (RBCs) was determined using the 3-(4,5-Dimethylythiazol-2-yl)-2,5-diphenyl tetrazolium bromide (MTT) assay. For the acute toxicity studies, the rats (male and female) were divided randomly into six groups of five rats (n = 5) and dosed orally once with the following dose levels: 100, 300, 1000, 3000, and 5000 mgkg-1, p.o. of the extracted AAE, with the control group receiving only the vehicle. In the repeated dose toxicity studies, the rats (both sexes) were orally administered daily with AAE at 100, 300, and 1000 mgkg-1 for 14 days. Rat body weights were measured, and blood samples were tested for haematological and biochemical markers. Internal organs like the heart, kidney, liver, and spleen were collected, inspected, and weighed, and histological examinations were performed. The median lethal dose (LD50) value is greater than 5000 mgkg-1 body weight, with no significant change in bodyweight or relative organ weight (ROWs) of the extract-treated groups or control group. The extract showed greater cytotoxicity activity (CC50), which was >100 μg/mL, compared to the reference drug (artesunate).The dosage groups of 100 and 300 mgkg-1bwt had neutrophilia and lymphocytopenia (p < 0.05). However, changes in these haematological parameters may not be dose dependent and could be stress related. All the serum biochemical markers studied in rats given AAE did not show any significant change (p > 0.05). Histopathological examination of internal organs of AAE-treated rats did not show any significant abnormalities resulting from the extract treatment compared to the control group. Based on the findings in the present study, the LD50 value of AAE was found to exceed 5000 mgkg-1 in the acute toxicity test, while the no observed adverse effect level (NOAEL) in rats was 1000 mgkg-1 p.o. In the sub-acute toxicity tests. Histopathological analysis revealed no morphological abnormalities in the vital organs.
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Affiliation(s)
- Mustapha A. Ahmed
- Department of Biomedical Sciences, School of Allied Health Sciences, University of Cape Coast, Cape Coast, Ghana
- Small Animal Teaching Hospital, SVM, CBAS, University of Ghana, Legon, Accra, Ghana
| | - Elvis O. Ameyaw
- School of Pharmacy and Pharmaceutical Sciences, University of Cape Coast, Cape Coast, Ghana
| | - Francis Ackah-Armah
- Department of Biomedical Sciences, School of Allied Health Sciences, University of Cape Coast, Cape Coast, Ghana
| | - Desmond O. Acheampong
- Department of Biomedical Sciences, School of Allied Health Sciences, University of Cape Coast, Cape Coast, Ghana
| | - Peter K. Gathumbi
- Department of Veterinary Pathology Microbiology and Parasitology, FVM, University of Nairobi, Nairobi, Kenya
| | - Michael B. Adinortey
- Department of Biochemistry, School of Biological Sciences, University of Cape Coast, Cape Coast, Ghana
| | - George Ghartey-Kwansah
- Department of Biomedical Sciences, School of Allied Health Sciences, University of Cape Coast, Cape Coast, Ghana
| | - Hope R. Otsyina
- Small Animal Teaching Hospital, SVM, CBAS, University of Ghana, Legon, Accra, Ghana
| | - Christian K. Adokoh
- Department of Forensic Sciences, School of Biological Science, University of Cape Coast, Cape Coast, Ghana
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Toxicological profile, phytochemical analysis and anti-inflammatory properties of leaves of Vitex doniana Sweet. (Verbenaceae). Heliyon 2022; 8:e10080. [PMID: 36033297 PMCID: PMC9404279 DOI: 10.1016/j.heliyon.2022.e10080] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2022] [Revised: 06/08/2022] [Accepted: 07/21/2022] [Indexed: 11/23/2022] Open
Abstract
Background Natural herbal compounds are a source and alternative for new compounds with anti-inflammatory properties. Therefore, in-depth studies should be carried out to assess their safety and efficacy in order to avoid or prevent toxicological risks of these natural plant-based substances. V. doniana is a species of food plant used for the treatment of inflammatory diseases in Burkina Faso. This study aimed to estimate the anti-inflammatory properties in vitro and in vivo of the ethyl acetate fraction of the leaves of V. doniana. Methods To do this, acute toxicity was first evaluated on the animal model. Biological activities (carrageenan test, formalin and xylene induced oedemas) were used to assess the anti-inflammatory power. Results Regarding the dietary toxicology of the extracts, visual and clinical signs showed that the extracts are not at the end of the 15-day (acute toxicity) and 45-day (subacute toxicity) tests. In terms of anti-inflammatory activity in vivo, it was observed that the bioactive fraction (50, 100 and 200 mg/kg.b.w) had effective neurogenic anti-inflammatory properties. All of these effects observed were all dose-dependent. Conclusion The results of this present research have proven that V. donania extracts can be used as anti-inflammatories.
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Asdaq SMB, Nayeem N, Abida, Alam MT, Alaqel SI, Imran M, Hassan EWE, Rabbani SI. Tectona grandis L.f: A comprehensive review on its patents, chemical constituents, and biological activities. Saudi J Biol Sci 2022; 29:1456-1464. [PMID: 35280534 PMCID: PMC8913375 DOI: 10.1016/j.sjbs.2021.11.026] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2021] [Revised: 11/08/2021] [Accepted: 11/16/2021] [Indexed: 11/12/2022] Open
Abstract
Tectona grandis L.f is a timber plant that is commonly referred to as teak. Its wide use as a medicine in the various indigenous systems makes it a plant of importance. A wide gamut of phytoconstituents like alkaloids, phenolic glycosides, steroids, etc. has been reported. A renewed interest in this plant has resulted in scientific investigations by various researchers towards the isolation and identification of active constituents along with scientific proof of its biological activities. The different parts of the plant have been scientifically evaluated for their antioxidant, antipyretic, analgesic, hypoglycemic, wound healing, cytotoxic, and many more biological activities. Documentation of this scientific knowledge is of importance to have consolidated precise information encompassing the various aspects of this plant, which could provide a base for future studies. This review is a compilation of the salient reports on these investigations concerning phytochemistry, the methods used to identify and quantify the constituents, the evaluation methods of the biological activity, toxicological studies, allergies and the patent/patent applications. This will further help researchers to find an area of the gap for future studies.
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Affiliation(s)
| | - Naira Nayeem
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Northern Border University, Rafha, Saudi Arabia
| | - Abida
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Northern Border University, Rafha, Saudi Arabia
| | - Md Tauquir Alam
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Northern Border University, Rafha, Saudi Arabia
| | - Saleh I Alaqel
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Northern Border University, Rafha, Saudi Arabia
| | - Mohd Imran
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Northern Border University, Rafha, Saudi Arabia
| | - El-Waleed Elamin Hassan
- Department of Phytochemistry & Natural Products, Faculty of Pharmacy, Northern Border University, Rafha, Saudi Arabia
| | - Syed Imam Rabbani
- Department of Pharmacology and Toxicology, College of Pharmacy, Qassim University, Buraydah 51452, Saudi Arabia
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