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Garg P, Garg R, Horne D, Awasthi S, Salgia R, Singhal SS. Prognostic significance of natural products against multidrug tumor resistance. Cancer Lett 2023; 557:216079. [PMID: 36736532 DOI: 10.1016/j.canlet.2023.216079] [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: 01/04/2023] [Revised: 01/23/2023] [Accepted: 01/29/2023] [Indexed: 02/05/2023]
Abstract
Cancer is a pervasive, constantly evolving, and significant public health concern. The number of new cancer cases has risen dramatically in the last decades, making it one of the top causes of poor health and mortality worldwide. Although various treatment strategies, including surgery, radiation, and pharmaceutical therapies, have evolved into more sophisticated, precise methods, there is not much improvement in the cancer-related death toll. Consequently, natural product-based therapeutic discoveries have recently been considered an alternative approach. According to an estimate, one-third of the top twenty medications in today's market have a natural plant-product-based origin. Accordingly, primary prevention is an essential component of worldwide cancer control. This review provides an overview of the mechanisms of action of bioactive ingredients in natural dietary products that may contribute to the prevention and management of multiple malignancies.
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Affiliation(s)
- Pankaj Garg
- Department of Chemistry, GLA University, Mathura, Uttar Pradesh, 281406, India
| | - Rachana Garg
- Department of Surgery, Beckman Research Institute of City of Hope, Comprehensive Cancer Center and National Medical Center, Duarte, CA, 91010, USA
| | - David Horne
- Department of Molecular Medicine, Beckman Research Institute of City of Hope, Comprehensive Cancer Center and National Medical Center, Duarte, CA, 91010, USA
| | - Sanjay Awasthi
- Cayman Health, CTMH Doctors Hospital, George Town, Grand Cayman, KY1-1104, Cayman Islands
| | - Ravi Salgia
- Department of Medical Oncology & Therapeutics Research, Beckman Research Institute of City of Hope, Comprehensive Cancer Center and National Medical Center, Duarte, CA, 91010, USA
| | - Sharad S Singhal
- Department of Medical Oncology & Therapeutics Research, Beckman Research Institute of City of Hope, Comprehensive Cancer Center and National Medical Center, Duarte, CA, 91010, USA.
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Bar M, Binduga UE, Szychowski KA. Methods of Isolation of Active Substances from Garlic ( Allium sativum L.) and Its Impact on the Composition and Biological Properties of Garlic Extracts. Antioxidants (Basel) 2022; 11:antiox11071345. [PMID: 35883836 PMCID: PMC9312217 DOI: 10.3390/antiox11071345] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2022] [Revised: 07/02/2022] [Accepted: 07/08/2022] [Indexed: 12/04/2022] Open
Abstract
Garlic (Allium sativum L.) is widely used in the human diet and in scientific research due to its biological properties. Various factors, e.g., temperature, pressure, extraction method, type of solvent, size, and territorial origin of garlic, affect the amount and type of bioactive compounds obtained from garlic extracts. In turn, the content of bioactive compounds correlates with the biological activity of the extracts. Therefore, the aim of this review was to summarize the current state of knowledge of the methods and effectiveness of isolation of active substances from garlic and their impact on the garlic extract composition and, consequently, biological properties. According to the literature, extracts obtained using water as a solvent are mainly responsible for antimicrobial properties, which is related to, inter alia, the high content of allicin. The use of alcohols, such as methanol or ethanol, is associated with the outstanding antioxidant power of extracts resulting from the presence of phenolic compounds. In turn, due to the presence of diallyl disulfide and disulfide trisulfide, garlic oil has anticancer potential. Acetone is the most effective organic solvent; however, it is not suitable for immediate consumption.
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Affiliation(s)
- Monika Bar
- Department of Biotechnology and Cell Biology, Medical College, University of Information Technology and Management in Rzeszow, Sucharskiego 2, 35-225 Rzeszow, Poland;
| | - Urszula E. Binduga
- Department of Lifestyle Disorders and Regenerative Medicine, Medical College, University of Information Technology and Management in Rzeszow, Sucharskiego 2, 35-225 Rzeszow, Poland;
| | - Konrad A. Szychowski
- Department of Biotechnology and Cell Biology, Medical College, University of Information Technology and Management in Rzeszow, Sucharskiego 2, 35-225 Rzeszow, Poland;
- Correspondence: or
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3
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Assessment of the physicochemical properties and biological activity of Vietnamese single-bulb black garlic. FOOD BIOSCI 2022. [DOI: 10.1016/j.fbio.2022.101866] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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4
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Garlic constituents for cancer prevention and therapy: From phytochemistry to novel formulations. Pharmacol Res 2021; 175:105837. [PMID: 34450316 DOI: 10.1016/j.phrs.2021.105837] [Citation(s) in RCA: 31] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/02/2021] [Revised: 08/14/2021] [Accepted: 08/16/2021] [Indexed: 12/12/2022]
Abstract
Garlic (Allium sativum L.) is one of the oldest plants cultivated for its dietary and medicinal values. This incredible plant is endowed with various pharmacological attributes, such as antimicrobial, antiarthritic, antithrombotic, antitumor, hypoglycemic, and hypolipidemic activities. Among the various beneficial pharmacological effects of garlic, the anticancer activity is presumably the most studied. The consumption of garlic provides strong protection against cancer risk. Taking into account the multi-targeted actions and absence of considerable toxicity, a few active metabolites of garlic are probably to play crucial roles in the killing of cancerous cells. Garlic contains several bioactive molecules with anticancer actions and these include diallyl trisulfide, allicin, diallyl disulfide, diallyl sulfide, and allyl mercaptan. The effects of various garlic-derived products, their phytoconstituents and nanoformulations have been evaluated against skin, prostate, ovarian, breast, gastric, colorectal, oral, liver, and pancreatic cancers. Garlic extract, its phytocompounds and their nanoformulations have been shown to inhibit the different stages of cancer, including initiation, promotion, and progression. Besides, these bioactive metabolites alter the peroxidation of lipid, activity of nitric oxide synthetase, nuclear factor-κB, epidermal growth factor receptor, and protein kinase C, cell cycle, and survival signaling. The current comprehensive review portrays the functions of garlic, its bioactive constituents and nanoformulations against several types of cancers and explores the possibility of developing these agents as anticancer pharmaceuticals.
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Elbaz EM, Amin HAA, Kamel AS, Ibrahim SM, Helmy HS. Immunomodulatory effect of diallyl sulfide on experimentally-induced benign prostate hyperplasia via the suppression of CD4+T/IL-17 and TGF-β1/ERK pathways. Inflammopharmacology 2020; 28:1407-1420. [PMID: 32785828 DOI: 10.1007/s10787-020-00743-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2020] [Accepted: 07/30/2020] [Indexed: 12/15/2022]
Abstract
Benign prostatic hyperplasia (BPH) is a nonmalignant enlargement of the prostate common in older men. Diallyl sulfide (DAS), a major component of garlic, has been reported to possess antioxidant, anti-inflammatory, and antiproliferative effects. However, the underlying protective immunomodulatory mechanism of DAS on BPH remains vague. Herein, experimental BPH was induced in rats by daily subcutaneous injection of testosterone propionate (TP) (3 mg/kg, s.c.) for 4 weeks. In parallel, finasteride (Fin) (5 mg/kg, p.o) or DAS (50 mg/kg, p.o.) was administered orally during BPH induction. TP-induced histological alterations and the immune-inflammatory cascade. On the other hand, DAS or Fin administration alleviated all abnormalities induced testosterone. Fin and DAS administration markedly reduced prostate weight by 53% with Fin, and by 60% with DAS. Moreover, serum testosterone and DHT were reduced by 55% and 52%, respectively, with Fin and by 68% and 75%, respectively, with DAS, in concordance with decreased protein expression of androgen receptor (AR), and prostate-specific antigen (PSA). Furthermore, both regime lessen immune-inflammatory milieu, as evidenced by decrease CD4+ T-cells protein expression and associated inflammatory cytokines. Concomitantly, Fin and DAS exhibited marked mitigation in insulin-like growth factor-1 (IGF-1), transforming growth factor-beta1 (TGF-β1), and phosphorylated extracellular signal-regulated kinase (ERK1/2) signaling. Besides alleviating oxidative stress by 53% and 68% in prostatic MDA and by 27% and 7% in prostatic iNOS with Fin and DAS, respectively. In conclusion, this work highlighted a potential therapeutic approach of DAS as a dietary preventive agent against BPH via its anti-inflammatory and immunomodulatory effect along with suppression of the ERK pathway.
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Affiliation(s)
- Eman M Elbaz
- Biochemistry Department, Faculty of Pharmacy, Cairo University, Kasr El Aini St., Cairo, 11562, Egypt.
| | - Hebat Allah A Amin
- Pathology Department, Faculty of Medicine, Helwan University, Cairo, Egypt
| | - Ahmed S Kamel
- Pharmacology and Toxicology Department, Faculty of Pharmacy, Cairo University, Cairo, 11562, Egypt.
| | - Sherehan M Ibrahim
- Pharmacology and Toxicology Department, Faculty of Pharmacy, Cairo University, Cairo, 11562, Egypt
| | - Hebatullah S Helmy
- Biochemistry Department, Faculty of Pharmacy, Cairo University, Kasr El Aini St., Cairo, 11562, Egypt
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6
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Benign prostate hyperplasia and nutrition. Clin Nutr ESPEN 2019; 33:5-11. [DOI: 10.1016/j.clnesp.2019.07.015] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2019] [Revised: 06/07/2019] [Accepted: 07/27/2019] [Indexed: 11/20/2022]
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7
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Asemani Y, Zamani N, Bayat M, Amirghofran Z. Allium vegetables for possible future of cancer treatment. Phytother Res 2019; 33:3019-3039. [DOI: 10.1002/ptr.6490] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2019] [Revised: 07/29/2019] [Accepted: 08/10/2019] [Indexed: 12/17/2022]
Affiliation(s)
- Yahya Asemani
- Department of ImmunologyShiraz University of Medical Sciences Shiraz Iran
| | - Nasrindokht Zamani
- Research Center for Persian Medicine and History MedicineShiraz University of Medical Sciences Shiraz Iran
| | - Maryam Bayat
- Department of ImmunologyShiraz University of Medical Sciences Shiraz Iran
| | - Zahra Amirghofran
- Department of ImmunologyShiraz University of Medical Sciences Shiraz Iran
- Autoimmune Diseases Research CenterShiraz University of Medical Sciences Shiraz Iran
- Medicinal and Natural Products Chemistry Research CenterShiraz University of Medical Sciences Shiraz Iran
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Santos HO, Howell S, Teixeira FJ. Beyond tribulus (Tribulus terrestris L.): The effects of phytotherapics on testosterone, sperm and prostate parameters. JOURNAL OF ETHNOPHARMACOLOGY 2019; 235:392-405. [PMID: 30790614 DOI: 10.1016/j.jep.2019.02.033] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/11/2018] [Revised: 02/17/2019] [Accepted: 02/17/2019] [Indexed: 06/09/2023]
Abstract
ETHNO-PHARMACOLOGICAL RELEVANCE Phytotherapeutic approaches have been widely proposed to improve male health. Despite the well-touted effects of tribulus (Tribulus terrestris L) on men's health, an optimal phytotherapy remains an elusive challenge. AIM OF THE REVIEW We sought to critically analyze the evidence in the phytotherapic literature beyond the effects of tribulus on testosterone (T) concentration and sperm analysis to also include indications for prostate health. MATERIALS AND METHODS A focused literature search was conducted to include studies published in Cochrane, Pubmed, and Web of Science databases between the years 2002 and 2018. RESULTS The use of tribulus and maca (Lepidium meyenii Walp, Brassicaceae) were not scientifically supported to improve serum T levels in men. Moderate evidence supports the use of long Jack (Eurycoma longifolia Jack, Simaroubaceae), mucuna (Mucuna pruriens (L.) DC., Fabaceae), ashwagandha (Withania somnifera (L.) Dunal, Solanaceae), fenugreek (Trigonella foenum-graceum L., Fabaceae), and black seeds (Nigella sativa L., Ranunculaceae) to increase total T and improve seminal parameters. Data suggests an increase in total T with the use of 5000 mg/d of powdered mucuna seed and ashwagandha root (151 and 143 ng/dL, respectively) over a 12-week period in patients with oligozoospermia. The use of mucuna was supported for patients with oligozoospermia to improve sperm parameters, with an increase of 83.3 million/mL observed after use of 5000 mg/d of powdered mucuna seed over a 12-week period. Evidence supporting the use of saw palmetto (Serenoa repens, (W.Bartram) Small, Arecaceae) to improve prostate health remains equivocal; whereas, evidence supporting the use of Pygeum africanum Hook.f., Rosaceae, Urtica dioica L., Urticaceae, beta-sitosterols, pollen extract, onion, garlic, and tomato, appears favorable and promising. CONCLUSION Scientific evidence supports the use of mucuna and ashwagandha as phytotherapics for improving serum T concentrations and semen parameters. Despite inconclusive evidence for use of tribulus as a T booster, it may provide advantageous effects on sperm parameters in men with idiopathic infertility. Nutraceutical strategies and some phytotherapics may also be effective to promote prostate health. Popular foodstuffs (onion, garlic, and tomato), nutraceutical agents (pollen extract and beta-sitosterols), and herbal medicines (Pygeum africanum and Urtica dioica) are rational approaches.
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Affiliation(s)
- Heitor O Santos
- School of Medicine, Federal University of Uberlandia (UFU), Uberlandia, Minas Gerais, Brazil.
| | - Scott Howell
- Research Director, Tier 1 Center for Research, Chattanooga, TN, United States
| | - Filipe J Teixeira
- Laboratory of Physiology and Biochemistry of Exercise, Faculty of Human Kinetics, Universidade de Lisboa, Cruz Quebrada, Portugal
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Chung KS, Shin SJ, Lee NY, Cheon SY, Park W, Sun SH, An HJ. Anti-Proliferation Effects of Garlic (Allium sativum
L.) on the Progression of Benign Prostatic Hyperplasia. Phytother Res 2016; 30:1197-203. [DOI: 10.1002/ptr.5637] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2015] [Revised: 04/07/2016] [Accepted: 04/15/2016] [Indexed: 11/10/2022]
Affiliation(s)
- Kyung-Sook Chung
- Department of Pharmacology, College of Oriental Medicine; Sangji University; Gangwon-do 220-702 Republic of Korea
| | - Su-Jin Shin
- Department of Pharmacology, College of Oriental Medicine; Sangji University; Gangwon-do 220-702 Republic of Korea
| | - Na Young Lee
- Department of Pharmacology, College of Oriental Medicine; Sangji University; Gangwon-do 220-702 Republic of Korea
| | - Se-Yun Cheon
- Department of Pharmacology, College of Oriental Medicine; Sangji University; Gangwon-do 220-702 Republic of Korea
| | - Wansu Park
- Department of Pathology, College of Korean Medicine; Gachon University; Seongnam 461-701 Republic of Korea
| | - Seung-Ho Sun
- Department of Oriental Internal Medicine; Oriental Hospital of Sang-Ji University; Gangwon-do 220-702 Republic of Korea
| | - Hyo-Jin An
- Department of Pharmacology, College of Oriental Medicine; Sangji University; Gangwon-do 220-702 Republic of Korea
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Bagul M, Kakumanu S, Wilson TA. Crude Garlic Extract Inhibits Cell Proliferation and Induces Cell Cycle Arrest and Apoptosis of Cancer Cells In Vitro. J Med Food 2015; 18:731-7. [PMID: 25608085 DOI: 10.1089/jmf.2014.0064] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Garlic and its lipid-based extracts have played an important medicinal role in humans for centuries that includes antimicrobial, hypoglycemic, and lipid-lowering properties. The present study was to investigate the effects of crude garlic extract (CGE) on the proliferation of human breast, prostate, hepatic, and colon cancer cell lines and mouse macrophageal cells, not previously studied. The human cancer cell lines, such as hepatic (Hep-G2), colon (Caco-2), prostate (PC-3), and breast (MCF-7), were propagated at 37°C; air/CO2 (95:5 v/v) using the ATCC-formulated RPMI-1640 Medium and 10% fetal bovine serum (FBS), while the mouse macrophage cell line (TIB-71) was propagated at 37°C; air/CO2 (95:5 v/v) using the ATCC-formulated DMEM and 10% FBS. All cells were plated at a density of ∼5000 cells/well. After overnight incubation, the cells were treated with 0.125, 0.25, 0.5, or 1 μg/mL of CGE an additional 72 h. Inhibition of cell proliferation of 80-90% was observed for Hep-G2, MCF-7, TIB-71, and PC-3 cells, but only 40-55% for the Caco-2 cells when treated with 0.25, 0.5, or 1 μg/mL. In a coculture study of Caco-2 and TIB-71 cells, inhibition of cell proliferation of 90% was observed for Caco-2 cells compared to the 40-55% when cultured separately. CGE also induced cell cycle arrest and had a fourfold increase in caspase activity (apoptosis) in PC-3 cells when treated at a dose of 0.5 or 1 μg/mL. This investigation of CGE clearly highlights the fact that the lipid bioactive compounds in CGE have the potential as promising anticancer agents.
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Affiliation(s)
- Mukta Bagul
- 1 Biomedical Engineering and Biotechnology Program, University of Massachusetts Lowell , Lowell, Massachusetts, USA
| | - Srikanth Kakumanu
- 1 Biomedical Engineering and Biotechnology Program, University of Massachusetts Lowell , Lowell, Massachusetts, USA
| | - Thomas A Wilson
- 1 Biomedical Engineering and Biotechnology Program, University of Massachusetts Lowell , Lowell, Massachusetts, USA .,2 Department of Clinical Laboratory and Nutritional Sciences, Center for Health and Disease Research, University of Massachusetts Lowell , Lowell, Massachusetts, USA
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Dong HV, Lee AH, Nga NH, Quang N, Chuyen VL, Binns CW. Epidemiology and Prevention of Prostate Cancer in Vietnam. Asian Pac J Cancer Prev 2014; 15:9747-51. [DOI: 10.7314/apjcp.2014.15.22.9747] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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12
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Comparison of antimicrobial activity, phytochemical profile and minerals composition of garlic Allium sativum and Allium tuberosum. ACTA ACUST UNITED AC 2014. [DOI: 10.1007/s13765-014-4021-4] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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13
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Changes in S-allyl cysteine contents and physicochemical properties of black garlic during heat treatment. Lebensm Wiss Technol 2014. [DOI: 10.1016/j.lwt.2013.05.006] [Citation(s) in RCA: 86] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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14
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[Primary and secondary prevention of benign prostatic hyperplasia: current knowledge and implications for clinical management]. Urologe A 2011; 50:1257-8, 1260-4. [PMID: 21901570 DOI: 10.1007/s00120-011-2618-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
Histological benign prostatic hyperplasia (BPH) and the BPH disease are frequent, lead to a reduction of quality of life, are both progressive and potentially associated with complications in the lower and upper urinary tract. A PubMed/MEDLINE search was conducted for the years 1990 to 2011. This article summarizes known selective measures of primary and secondary disease prevention.Measures of primary disease prevention aim to inhibit histological BPH and the development of clinically relevant BPH. Weight loss, regular physical activity, vegetable consumption, alcohol intake, 5α-reductase inhibitors, avoidance of overweight and reduction of fatty food can reduce the probability of histological and clinical BPH. Selective measures of secondary prevention aim to inhibit disease progression and BPH-associated complications. The regular and long-term use of α1-blockers reduces lower urinary tract symptoms (LUTS) and inhibits symptomatic disease progression but cannot prevent BPH-associated complications (e.g. urinary retention or need for prostate surgery). 5α-Reductase inhibitors can reduce the probability of symptomatic disease progression, urinary retention or need for surgery but the combination of α1-blocker and 5α-reductase inhibitor is more efficacious than either monotherapy. Especially older men with enlarged prostates (>40 cm(3)) and elevated serum PSA concentration (>1.6 µg/l) profit from measures of secondary disease prevention.For primary disease prevention, data quality is low and early treatment with 5α-reductase inhibitors is not been approved. For secondary disease prevention, men with risk factors of disease progression should use a treatment containing 5α-reductase inhibitors. Despite several epidemiological and clinical investigations on BPH disease progression no official programme exists in Germany for disease prevention.
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Kane CJ, Raheem OA, Bent S, Avins AL. What Do I Tell Patients About Saw Palmetto for Benign Prostatic Hyperplasia? Urol Clin North Am 2011; 38:261-77. [DOI: 10.1016/j.ucl.2011.04.005] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Touloupakis E, Ghanotakis DF. Nutraceutical use of garlic sulfur-containing compounds. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2010; 698:110-21. [PMID: 21520707 DOI: 10.1007/978-1-4419-7347-4_9] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Garlic is one of the world's oldest medicines that has been employed not only for flavouring but also as a medical herb for its prophylactic and therapeutic actions. Most garlics' beneficial effects are due to the presence of the organosulphate molecule allicin. Allicin is a highly unstable molecule and, during processing, is rapidly transformed into a variety of organosulfur components. The enzyme alliinase, which is responsible for the conversion of alliin to allicin, is irreversibly destroyed at the acidic environment of stomach. This is the reason why most garlic supplements contain garlic powder or granules, but do not contain allicin itself. Garlic alliinase could be encapsulated and coated with materials which would protect it in the harsh conditions of the stomach. The objective of this chapter is to summarize the most important garlic health benefits and to discuss promising encapsulation/stabilization approaches.
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Affiliation(s)
- Eleftherios Touloupakis
- Department of Chemistry, University of Crete, P.O. Box 2208, 71003 Voutes-Heraklion, Greece.
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Van Patten CL, de Boer JG, Tomlinson Guns ES. Diet and dietary supplement intervention trials for the prevention of prostate cancer recurrence: a review of the randomized controlled trial evidence. J Urol 2008; 180:2314-21; discussion 2721-2. [PMID: 18930254 DOI: 10.1016/j.juro.2008.08.078] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2008] [Indexed: 11/17/2022]
Abstract
PURPOSE We review the effect of diet and dietary supplement interventions on prostate cancer progression, recurrence and survival. MATERIALS AND METHODS A literature search was conducted in MEDLINE, EMBASE and CINAHL to identify diet and dietary supplement intervention studies in men with prostate cancer using prostate specific antigen or prostate specific antigen doubling time as a surrogate serum biomarker of prostate cancer recurrence and/or survival. RESULTS Of the 32 studies identified 9 (28%) were randomized controlled trials and the focus of this review. In these studies men had confirmed prostate cancer and elevated or increasing prostate specific antigen. Only 1 trial included men with metastatic disease. When body mass index was reported, men were overweight or obese. A significant decrease in prostate specific antigen was observed in some studies using a low fat vegan diet, soy beverage or lycopene supplement. While not often reported as an end point, a significant increase in prostate specific antigen doubling time was observed in a study on lycopene supplementation. In only 1 randomized controlled trial in men undergoing orchiectomy was a survival end point of fewer deaths with lycopene supplementation reported. CONCLUSIONS A limited number of randomized controlled trials were identified in which diet and dietary supplement interventions appeared to slow disease progression in men with prostate cancer, although results vary. Studies were limited by reliance on the surrogate biomarker prostate specific antigen, sample size and study duration. Well designed trials are warranted to expand knowledge, replicate findings and further assess the impact of diet and dietary supplement interventions on recurrence and treatment associated morbidities.
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Abstract
The objective of this study was to determine the prevalence of antibiotic-resistant bacteria in various herbal products. Twenty-nine herbal supplements (18 traditional and 11 organic products) were purchased from stores and analyzed microbiologically. Total bacterial counts were determined by pour plate and surface spreading on tryptic soy agar (TSA). Antibiotic-resistant bacteria were enumerated on TSA supplemented with ceftriaxone (64 microg/ml) or tetracycline (16 microg/ml). Total bacterial counts ranged from <5 to 2.9 x 10(5) CFU/g. Ceftriaxone- and tetracycline-resistant bacteria were detected in ground garlic samples at 1.1 x 10(2) CFU/g and 3.0 x 102 CFU/g, respectively. Traditional and organic onion powder samples contained tetracycline-resistant bacteria at 17 and 28 CFU/g and ceftriaxone-resistant bacteria at 35 and 2.0 x 10(3) CFU/g, respectively. Other products such as ginger, rosemary, mustard, and goldenseal contained low levels of resistant bacteria. Fifty-two isolates were further evaluated against nine antibiotics, and the prevalence of antibiotic resistance was in the following order: ampicillin, nalidixic acid, trimethoprim, ceftriaxone, and streptomycin. Resistant bacteria were identified as Bacillus spp., Erwinia spp., and Ewingella americana. Staphylococcus spp., Enterobacter cloacae, and Stenotrophomonas maltophilia also were isolated. The presence of antibiotic-resistant bacteria and pathogens in these herbal products suggests that production and use of these products may need further evaluation.
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Affiliation(s)
- Joseph C Brown
- Department of Biological Sciences and 2Department of Food Science & Human Nutrition, Clemson University, Clemson, South Carolina 29634, USA
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20
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Devrim E, Durak I. Is garlic a promising food for benign prostatic hyperplasia and prostate cancer? Mol Nutr Food Res 2007; 51:1319-23. [DOI: 10.1002/mnfr.200600302] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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21
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Onion and Garlic Intake and the Odds of Benign Prostatic Hyperplasia. Urology 2007; 70:672-6. [DOI: 10.1016/j.urology.2007.06.1099] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2006] [Revised: 04/16/2007] [Accepted: 06/26/2007] [Indexed: 11/20/2022]
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22
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De Martino A, Filomeni G, Aquilano K, Ciriolo MR, Rotilio G. Effects of water garlic extracts on cell cycle and viability of HepG2 hepatoma cells. J Nutr Biochem 2006; 17:742-9. [PMID: 16520031 DOI: 10.1016/j.jnutbio.2005.12.005] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2005] [Revised: 12/20/2005] [Accepted: 12/22/2005] [Indexed: 10/25/2022]
Abstract
Garlic extracts, either aqueous or oily, are commonly employed to prepare garlic derivative supplements used as nutraceuticals for the treatment of different pathologies. In this study, we investigated the effects of water garlic extracts from two different areas of Italy well known for garlic production, Latina (GEL) and Sulmona (GES), on cell cycle and death of HepG2 hepatoma cells. The effects of the treatments with GEL and GES were also compared with the oil-soluble sulfur compound of garlic, diallyl disulfide (DADS). GEL and GES induced a p53/p21-dependent cell cycle arrest in G2/M phase and apoptosis, although to a different extent, whereas DADS, under the experimental conditions used, was not detrimental to HepG2 cells. GEL and GES committed HepG2 cells to apoptosis by the activation of c-Jun-NH(2) terminal kinase (JNK)/c-Jun phosphorylative cascade without a detectable increase in the flux of reactive oxygen species. Moreover, differentiation of HepG2 cells induced by retinoic acid determined resistance to GEL and GES treatments without the activation of JNK signaling pathway. Overall, the results obtained indicate that water-soluble garlic extracts are more inhibitory of the growth of transformed hepatoma cells than the oil-soluble isolated compound DADS, and that their antiproliferative properties are different depending on the area of origin of the starting material.
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Affiliation(s)
- Angelo De Martino
- Department of Biology, University of Rome "Tor Vergata," Via della Ricerca Scientifica, 00133 Rome, Italy.
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Abstract
It is currently estimated that > 50% of all patients diagnosed with cancer explore complementary and alternative medicine - especially herbal medicine. We conducted a comprehensive review to assess the safety and efficacy of herbal medicines commonly used by patients in an attempt to: prevent cancer; treat cancer; and treat adverse effects associated with conventional cancer treatments. Current evidence suggests that Asian ginseng, garlic, green tea, tomatoes and soy intake as part of the diet may be useful in preventing various cancers; additional research is needed in order to determine the efficacy of essiac, evening primrose oil, mistletoe, reishi, shiitake and turmeric as cancer treatments; and ginger may be effective in treating chemotherapy-induced nausea and vomiting.
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Affiliation(s)
- Heather Boon
- Leslie Dan Faculty of Pharmacy, Toronto, ON M5S 2S2, Canada.
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