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Osei‐Yeboah R, Amankwah S, Begier E, Adedze M, Nyanzu F, Appiah P, Ansah J, Campbell H, Sato R, Jodar L, Gessner B, Nair H. Burden of Respiratory Syncytial Virus (RSV) Infection Among Adults in Nursing and Care Homes: A Systematic Review. Influenza Other Respir Viruses 2024; 18:e70008. [PMID: 39284784 PMCID: PMC11405123 DOI: 10.1111/irv.70008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2024] [Revised: 08/20/2024] [Accepted: 08/29/2024] [Indexed: 09/22/2024] Open
Abstract
BACKGROUND Older adults in nursing and care homes (NCHs) are vulnerable to severe respiratory syncytial virus (RSV) infection, hospitalization, and death. This study aimed to gather data on RSV disease among older adults in NCHs and identify reported risk factors for RSV hospitalization and case fatality. METHODS The study protocol was registered in PROSPERO (CRD42022371908). We searched MEDLINE, EMBASE, and Global Health databases to identify articles published between 2000 and 2023. Observational and experimental studies conducted among older adults in NCHs requiring assistive care and reporting RSV illness were included and relevant data were extracted. RESULTS Of 18,690 studies screened, 32 were selected for full-text review, and 20 were included. Overall, the number of NCH residents ranged from 42 to 1459 with a mean age between 67.6 and 85 years. Attack rates ranged from 6.7% to 47.6% and annual incidence ranged from 0.5% to 14%. Case fatality rates ranged from 7.7% to 23.1%. We found similar annual incidence rates of RSV-positive acute respiratory infection (ARI) of 4582 (95% CI: 3259-6264) and 4785 (95% CI: 2258-10,141) per 100,000 reported in two studies. Annual incidence rate of RSV-positive lower respiratory tract infection was 3040 (95% CI: 1986-4454) cases per 100,000 adults. Annual RSV-ARI hospital admission rates were between 600 (95% CI: 190-10,000) and 1104 (95% CI: 350-1930) per 100,000 person-years. Among all RSV disease cases, commonly reported chronic medical conditions included chronic obstructive pulmonary disease (COPD), heart failure, ischemic heart disease, coronary artery disease, hypertension, diabetes, kidney dysfunction, cerebrovascular accident, malignancies, dementia, and those with a Charlson comorbidity score > 6.5. CONCLUSION Data on RSV infection among NCH residents are limited and largely heterogeneous but document a high risk of illness, frequent hospitalization, and high mortality. Preventive interventions, such as vaccination, should be considered for this high-risk population. Nationally representative epidemiologic studies and NCH-based viral pathogen surveillance could more precisely assess the burden on NCH residents.
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Affiliation(s)
| | - Stephen Amankwah
- Institute of Biochemistry and BiophysicsPolish Academy of SciencesWarsawPoland
| | - Elizabeth Begier
- Global Medical Development Scientific and Clinical AffairsPfizer VaccinesDublinIreland
| | - Miranda Adedze
- Sahlgrenska AcademyUniversity of GothenburgGothenburgSweden
| | - Franklin Nyanzu
- Department of Epidemiology and Disease Control, School of Public HealthUniversity of GhanaAccraGhana
| | - Pious Appiah
- Department of Medical Microbiology, Medical School, College of Health SciencesUniversity of GhanaAccraGhana
| | | | - Harry Campbell
- Centre for Global Health, Usher InstituteUniversity of EdinburghEdinburghUK
| | - Reiko Sato
- Value & EvidencePfizer IncCollegevillePennsylvaniaUSA
| | - Luis Jodar
- Vaccines Medical Development, Scientific and Clinical AffairsPfizer IncCollegevillePennsylvaniaUSA
| | - Bradford D. Gessner
- Vaccines Medical Development, Scientific and Clinical AffairsPfizer IncCollegevillePennsylvaniaUSA
| | - Harish Nair
- Centre for Global Health, Usher InstituteUniversity of EdinburghEdinburghUK
- MRC/Wits Rural Public Health and Health Transitions Research Unit (Agincourt), School of Public Health, Faculty of Health SciencesUniversity of the WitwatersrandJohannesburgSouth Africa
- School of Public HealthNanjing Medical UniversityNanjingPeople's Republic of China
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2
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Thakur M, Singh M, Kumar S, Dwivedi VP, Dakal TC, Yadav V. A Reappraisal of the Antiviral Properties of and Immune Regulation through Dietary Phytochemicals. ACS Pharmacol Transl Sci 2023; 6:1600-1615. [PMID: 37974620 PMCID: PMC10644413 DOI: 10.1021/acsptsci.3c00178] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2023] [Indexed: 11/19/2023]
Abstract
In the present era of the COVID-19 pandemic, viral infections remain a major cause of morbidity and mortality worldwide. In this day and age, viral infections are rampant and spreading rapidly. Among the most aggressive viral infections are ebola, AIDS (acquired immunodeficiency syndrome), influenza, and SARS (severe acute respiratory syndrome). Even though there are few treatment options for viral diseases, most of the antiviral therapies are ineffective owing to frequent mutations, the development of more aggressive strains, drug resistance, and possible side effects. Traditionally, herbal remedies have been used by healers, including for dietary and medicinal purposes. Many clinical and scientific studies have demonstrated the therapeutic potential of plant-derived natural compounds. Because of unsafe practices like blood transfusions and organ transplants from infected patients, medical supply contamination. Our antiviral therapies cannot achieve sterile immunity, and we have yet to find a cure for these pernicious infections. Herbs have been shown to improve therapeutic efficacy against a wide variety of viral diseases because of their high concentration of immunomodulatory phytochemicals (both immunoinhibitory and anti-inflammatory). Combined with biotechnology, this folk medicine system can lead to the development of novel antiviral drugs and therapies. In this Review, we will summarize some selected bioactive compounds with probable mechanisms of their antiviral actions, focusing on the immunological axis of these compounds.
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Affiliation(s)
- Mony Thakur
- Department
of Microbiology, Central University of Haryana, Mahendergarh, Haryana 123031, India
| | - Mona Singh
- Department
of Obstetrics and Gynaecology, Medical College
of Wisconsin, Milwaukee, Wisconsin 53226, United States
| | - Sandeep Kumar
- Division
of Cell Biology and Immunology, Council
of Scientific and Industrial Research - Institute of Microbial Technology, Chandigarh 160036, India
| | - Ved Prakash Dwivedi
- International
Centre for Genetic Engineering and Biotechnology, ICGEB Campus, Aruna Asaf Ali Marg, New Delhi 110067, India
| | - Tikam Chand Dakal
- Genome
and Computational Biology Lab, Department of Biotechnology, Mohanlal Sukhadia University, Udaipur, Rajasthan 313001, India
| | - Vinod Yadav
- Department
of Microbiology, Central University of Haryana, Mahendergarh, Haryana 123031, India
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3
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Zhang Y, Zhong X, Xi Z, Li Y, Xu H. Antiviral Potential of the Genus Panax: An updated review on their effects and underlying mechanism of action. J Ginseng Res 2023; 47:183-192. [PMID: 36926608 PMCID: PMC10014226 DOI: 10.1016/j.jgr.2022.11.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2022] [Revised: 10/18/2022] [Accepted: 11/03/2022] [Indexed: 11/18/2022] Open
Abstract
Viral infections are known as one of the major factors causing death. Ginseng is a medicinal plant that demonstrated a wide range of antiviral potential, and saponins are the major bioactive ingredients in the genus Panax with vast therapeutic potential. Studies focusing on the antiviral activity of the genus Panax plant-derived agents (extracts and saponins) and their mechanisms were identified and summarized, including contributions mainly from January 2016 until January 2022. P. ginseng, P. notoginseng, and P. quinquefolius were included in the review as valuable medicinal herbs against infections with 14 types of viruses. Reports from 9 extracts and 12 bioactive saponins were included, with 6 types of protopanaxadiol (PPD) ginsenosides and 6 types of protopanaxatriol (PPT) ginsenosides. The mechanisms mainly involved the inhibition of viral attachment and replication, the modulation of immune response by regulating signaling pathways, including the Janus kinase (JAK)/signal transducer and activator of transcription (STAT) pathway, cystathionine γ-lyase (CSE)/hydrogen sulfide (H2S) pathway, phosphoinositide-dependent kinase-1 (PDK1)/ protein kinase B (Akt) signaling pathway, c-Jun N-terminal kinase (JNK)/activator protein-1 (AP-1) pathway, and nuclear factor kappa-light-chain-enhancer of activated B cells (NF-κB) pathway. This review includes detailed information about the mentioned antiviral effects of the genus Panax extracts and saponins in vitro and in vivo, and in human clinical trials, which provides a scientific basis for ginseng as an adjunctive therapeutic drug or nutraceutical.
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Key Words
- ARI, acute respiratory illness
- BG, black ginseng
- BVDV, bovine viral diarrhea virus
- CHB, chronic hepatitis B
- CSFV, classical swine fever virus
- CVBs, group B coxsackieviruses
- DAA, direct-acting antiviral therapies
- EBV, the Epstein-Barr virus
- EV, enterovirus
- EV71, human enterovirus 71
- GCRV, grass carp reovirus
- GSLS, Ginseng stem-leaf saponins
- HAART, highly active antiretroviral drug therapy
- HBV, hepatitis B virus
- HCV, Hepatitis C virus
- HIV-1, human immunodeficiency virus type 1
- HP, highly pathogenic
- HSV, herpes simplex virus
- HVJ, hemagglutinating virus of Japan
- IFN-1, type-I interferon
- JAK, janus kinase
- JNK, c-Jun N-terminal kinase
- KRG, Korean Red Ginseng
- KSHV, Kaposi's sarcoma-associated herpesvirus
- MHV-68, murine gammaherpesvirus 68
- NDV, Newcastle disease virus
- NK, natural killer
- PNAB, PEGylated nanoparticle albumin-bound
- PNR, P. notoginseng root water extract
- PPD, protopanaxadiol
- PPT, protopanaxatriol
- PRRSV, porcine reproductive and respiratory syndrome virus
- Panax ginseng
- RSV, respiratory syncytial virus
- RV, rotavirus
- STAT, signal transducer and activator of transcription
- antiviral activity
- ginseng
- ginsenosides
- mechanism of action
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Affiliation(s)
- Yibo Zhang
- School of Pharmacy, Shanghai University of Traditional Chinese Medicine, Shanghai, China.,Engineering Research Center of Shanghai Colleges for TCM New Drug Discovery, Shanghai, China
| | - Xuanlei Zhong
- School of Pharmacy, Shanghai University of Traditional Chinese Medicine, Shanghai, China.,Engineering Research Center of Shanghai Colleges for TCM New Drug Discovery, Shanghai, China
| | - Zhichao Xi
- School of Pharmacy, Shanghai University of Traditional Chinese Medicine, Shanghai, China.,Engineering Research Center of Shanghai Colleges for TCM New Drug Discovery, Shanghai, China
| | - Yang Li
- School of Pharmacy, Shanghai University of Traditional Chinese Medicine, Shanghai, China.,Engineering Research Center of Shanghai Colleges for TCM New Drug Discovery, Shanghai, China
| | - Hongxi Xu
- Shuguang Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, China
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Phytocompounds as a source for the development of new drugs to treat respiratory viral infections. STUDIES IN NATURAL PRODUCTS CHEMISTRY 2023; 77:187-240. [PMCID: PMC10204935 DOI: 10.1016/b978-0-323-91294-5.00007-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/03/2024]
Abstract
Respiratory viruses have an important history as a threat to global health. However, this problem has been aggravated due to the appearance of new outbreaks caused by a newly discovered virus or variant. Recently, the new coronavirus (SARS-CoV-2) has been a major concern for health authorities, and it was classified as a pandemic by the World Health Organization. Secondary metabolites obtained from plants represent an alternative to the discovery of new active molecules and have already shown potential to combat different viruses. In an effort to demonstrate the broad spectrum of antiviral action from these metabolites, this work describes the compounds that were effective against the major viruses that cause respiratory infections in humans. In addition, their mechanisms of action were highlighted as an approach to better understanding the virus-bioactive substance relationship. Finally, this study warns that, although phytocompounds have a broad antiviral action spectrum, the development of products and clinical trials based on these secondary metabolites is still scarce and therefore deserves greater attention from the scientific community.
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Green and Efficient Extraction of Polysaccharide and Ginsenoside from American Ginseng (Panax quinquefolius L.) by Deep Eutectic Solvent Extraction and Aqueous Two-Phase System. Molecules 2022; 27:molecules27103132. [PMID: 35630607 PMCID: PMC9144842 DOI: 10.3390/molecules27103132] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2021] [Revised: 04/29/2022] [Accepted: 04/30/2022] [Indexed: 02/01/2023] Open
Abstract
In this study, a green and effective extraction method was proposed to extract two main compounds, ginsenosides and polysaccharides, from American ginseng by combining deep eutectic solvents (DESs) with aqueous two-phase systems. The factors of type of DESs, water content in DESs, the solid–liquid ratio, extraction temperature, and extraction time were studied in the solid–liquid extraction. Then, the aqueous two-phase system (DESs-ethylene oxide–propylene oxide (EOPO)) and salty solution exchange (EOPO-salty solution) was applied for the purification of polysaccharides. The content of the polysaccharides and ginsenosides were analyzed by the anthrone–sulfuric acid method and HPLC method, which showed that the extraction efficiency of deep eutectic solvents (DESs) was better than conventional methods. Moreover, the antioxidant activities of ginseng polysaccharides and their cytotoxicity were further assayed. The advantages of the current study are that, throughout the whole extraction process, we avoided the usage of an organic reagent. Furthermore, the separated green solvent DESs and EOPO could be recovered and reused for a next cycle. Thus, this study proposed a new, green and recyclable extraction method for extracting ginsenosides and polysaccharides from American ginseng.
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6
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Govers C, Calder PC, Savelkoul HFJ, Albers R, van Neerven RJJ. Ingestion, Immunity, and Infection: Nutrition and Viral Respiratory Tract Infections. Front Immunol 2022; 13:841532. [PMID: 35296080 PMCID: PMC8918570 DOI: 10.3389/fimmu.2022.841532] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2021] [Accepted: 02/02/2022] [Indexed: 12/12/2022] Open
Abstract
Respiratory infections place a heavy burden on the health care system, particularly in the winter months. Individuals with a vulnerable immune system, such as very young children and the elderly, and those with an immune deficiency, are at increased risk of contracting a respiratory infection. Most respiratory infections are relatively mild and affect the upper respiratory tract only, but other infections can be more serious. These can lead to pneumonia and be life-threatening in vulnerable groups. Rather than focus entirely on treating the symptoms of infectious disease, optimizing immune responsiveness to the pathogens causing these infections may help steer towards a more favorable outcome. Nutrition may have a role in such prevention through different immune supporting mechanisms. Nutrition contributes to the normal functioning of the immune system, with various nutrients acting as energy sources and building blocks during the immune response. Many micronutrients (vitamins and minerals) act as regulators of molecular responses of immune cells to infection. It is well described that chronic undernutrition as well as specific micronutrient deficiencies impair many aspects of the immune response and make individuals more susceptible to infectious diseases, especially in the respiratory and gastrointestinal tracts. In addition, other dietary components such as proteins, pre-, pro- and synbiotics, and also animal- and plant-derived bioactive components can further support the immune system. Both the innate and adaptive defense systems contribute to active antiviral respiratory tract immunity. The initial response to viral airway infections is through recognition by the innate immune system of viral components leading to activation of adaptive immune cells in the form of cytotoxic T cells, the production of neutralizing antibodies and the induction of memory T and B cell responses. The aim of this review is to describe the effects of a range different dietary components on anti-infective innate as well as adaptive immune responses and to propose mechanisms by which they may interact with the immune system in the respiratory tract.
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Affiliation(s)
- Coen Govers
- Cell Biology and Immunology, Wageningen University and Research, Wageningen, Netherlands
| | - Philip C. Calder
- School of Human Development and Health, Faculty of Medicine, University of Southampton, Southampton, United Kingdom
- National Institute for Health Research (NIHR) Southampton Biomedical Research Centre, University Hospital Southampton National Health Service (NHS) Foundation Trust and University of Southampton, Southampton, United Kingdom
| | - Huub F. J. Savelkoul
- Cell Biology and Immunology, Wageningen University and Research, Wageningen, Netherlands
| | | | - R. J. Joost van Neerven
- Cell Biology and Immunology, Wageningen University and Research, Wageningen, Netherlands
- Research & Development, FrieslandCampina, Amersfoort, Netherlands
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7
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Efficacy of the commercial plant products acting against influenza-a review. FUTURE JOURNAL OF PHARMACEUTICAL SCIENCES 2021; 7:238. [PMID: 34926706 PMCID: PMC8669228 DOI: 10.1186/s43094-021-00385-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2021] [Accepted: 11/29/2021] [Indexed: 11/10/2022] Open
Abstract
Background Influenza infection always poses a threat to human and animal health. Vaccines and antiviral drugs are recommended to deal with the situation. The drawback of these remedial agents made the scientist change their focus on an alternative therapy. The anti-influenza effects of plants have been extensively studied, and many pharmaceutical companies have prepared their products on this basis.
Main body The present review documents the successfully launched anti-influenza commercial products. In specific, it exposes the scientifically validated and evidence-based supporting inhibitory action of influenza and its strains. Conclusion This review highlighted the efficacy of the commercial products which effectively combat influenza. It provides a complementary strategy to deal with the worst-case scenario of flu. Meanwhile, to face the emerging strains, brand new products are in great necessity besides prevailing and available drugs.
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8
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The Dietary Intake of Carrot-Derived Rhamnogalacturonan-I Accelerates and Augments the Innate Immune and Anti-Viral Interferon Response to Rhinovirus Infection and Reduces Duration and Severity of Symptoms in Humans in a Randomized Trial. Nutrients 2021; 13:nu13124395. [PMID: 34959949 PMCID: PMC8704532 DOI: 10.3390/nu13124395] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2021] [Revised: 11/25/2021] [Accepted: 12/01/2021] [Indexed: 12/12/2022] Open
Abstract
Acute respiratory infections are an important health concern. Traditionally, polysaccharide-enriched extracts from plants, containing immunomodulatory rhamnogalacturonan-I (RG-1), were used prophylactically. We established the effects of dietary supplementation with carrot-derived RG-I (cRG-I, 0–0.3–1.5 g/day) in 177 healthy individuals (18–65 years) on symptoms following infection with rhinovirus strain 16 (RV16). Primary outcomes were changes in severity and duration of symptoms, and viral load in nasal lavage. Secondary outcomes were changes in innate immune and anti-viral responses, reflected by CXCL10 and CXCL8 levels and cell differentials in nasal lavage. In a nested cohort, exploratory transcriptome analysis was conducted on nasal epithelium. Intake of cRG-I was safe, well-tolerated and accelerated local cellular and humoral innate immune responses induced by RV16 infection, with the strongest effects at 1.5 g/d. At 0.3 g/d, a faster interferon-induced response, induction of the key anti-viral gene EIF2AK2, faster viral clearance, and reduced symptom severity (−20%) and duration (−25%) were observed. Anti-viral responses, viral clearance and symptom scores at 1.5 g/d were in between those of 0 and 0.3 g/d, suggesting a negative feedback loop preventing excessive interferon responses. Dietary intake of cRG-I accelerated innate immune and antiviral responses, and reduced symptoms of an acute respiratory viral infection.
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9
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Alsayari A, Muhsinah AB, Almaghaslah D, Annadurai S, Wahab S. Pharmacological Efficacy of Ginseng against Respiratory Tract Infections. Molecules 2021; 26:molecules26134095. [PMID: 34279434 PMCID: PMC8271507 DOI: 10.3390/molecules26134095] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2021] [Revised: 07/01/2021] [Accepted: 07/02/2021] [Indexed: 11/18/2022] Open
Abstract
Respiratory tract infections are underestimated, as they are mild and generally not incapacitating. In clinical medicine, however, these infections are considered a prevalent problem. By 2030, the third most comprehensive reason for death worldwide will be chronic obstructive pulmonary disease (COPD), according to the World Health Organization. The current arsenal of anti-inflammatory drugs shows little or no benefits against COPD. For thousands of years, herbal drugs have been used to cure numerous illnesses; they exhibit promising results and enhance physical performance. Ginseng is one such herbal medicine, known to alleviate pro-inflammatory chemokines and cytokines (IL-2, IL-4, IFN-γ, TNF-α, IL-5, IL-6, IL-8) formed by macrophages and epithelial cells. Furthermore, the mechanisms of action of ginsenoside are still not fully understood. Various clinical trials of ginseng have exhibited a reduction of repeated colds and the flu. In this review, ginseng’s structural features, the pathogenicity of microbial infections, and the immunomodulatory, antiviral, and anti-bacterial effects of ginseng were discussed. The focus was on the latest animal studies and human clinical trials that corroborate ginseng’s role as a therapy for treating respiratory tract infections. The article concluded with future directions and significant challenges. This review would be a valuable addition to the knowledge base for researchers in understanding the promising role of ginseng in treating respiratory tract infections. Further analysis needs to be re-focused on clinical trials to study ginseng’s efficacy and safety in treating pathogenic infections and in determining ginseng-drug interactions.
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Affiliation(s)
- Abdulrhman Alsayari
- Department of Pharmacognosy, College of Pharmacy, King Khalid University, Abha 61421, Saudi Arabia; (A.A.); (A.B.M.); (S.A.)
| | - Abdullatif Bin Muhsinah
- Department of Pharmacognosy, College of Pharmacy, King Khalid University, Abha 61421, Saudi Arabia; (A.A.); (A.B.M.); (S.A.)
| | - Dalia Almaghaslah
- Department of Clinical Pharmacy, College of Pharmacy, King Khalid University, Abha 61421, Saudi Arabia;
| | - Sivakumar Annadurai
- Department of Pharmacognosy, College of Pharmacy, King Khalid University, Abha 61421, Saudi Arabia; (A.A.); (A.B.M.); (S.A.)
| | - Shadma Wahab
- Department of Pharmacognosy, College of Pharmacy, King Khalid University, Abha 61421, Saudi Arabia; (A.A.); (A.B.M.); (S.A.)
- Correspondence: or
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10
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Shokri-Mashhadi N, Kazemi M, Saadat S, Moradi S. Effects of select dietary supplements on the prevention and treatment of viral respiratory tract infections: a systematic review of randomized controlled trials. Expert Rev Respir Med 2021; 15:805-821. [PMID: 33858268 DOI: 10.1080/17476348.2021.1918546] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
Introduction: Viral respiratory tract infections (RTIs) have been recognized as a global public health burden. Despite current theories about their effectiveness, the true benefits of dietary supplements on the prevention and treatment of viral RTIs remain elusive, due to contradictory reports. Hence, we aimed to evaluate the effectiveness of dietary supplements on the prevention and treatment of viral RTIs.Areas covered: We systematically searched databases of PubMed, Web of Science, Scopus, and Google Scholar through 4 March 2020, to identify randomized controlled trials that evaluated the effects of consuming selected dietary supplements on the prevention or treatment of viral RTIs.Expert opinion: Thirty-nine randomized controlled trials (n = 16,797 participants) were eligible and included. Namely, vitamin D supplementation appeared to improve viral RTIs across cohorts particulate in those with vitamin D deficiency. Among the evaluated dietary supplements, specific lactobacillus strains were used most commonly with selected prebiotics that showed potentially positive effects on the prevention and treatment of viral RTIs. Further, ginseng extract supplementation may effectively prevent viral RTIs as adjuvant therapy. However, longitudinal research is required to confirm these observations and address the optimal dose, duration, and safety of dietary supplements being publicly recommended.
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Affiliation(s)
- Nafiseh Shokri-Mashhadi
- Department of Clinical Nutrition, School of Nutrition and Food Science, Food Security Research Center, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Maryam Kazemi
- Division of Nutritional Sciences, Human Metabolic Research Unit, Cornell University, Ithaca, NewYork, USA
| | - Saeed Saadat
- Department of Computer Sciences, Faculty of Mathematics and Natural Sciences, Heinrich Heine Universität, Düsseldorf, Germany
| | - Sajjad Moradi
- Halal Research Center of IRI, FDA, Tehran, Iran.,Nutritional Sciences Department, School of Nutritional Sciences and Food Technology, Kermanshah University of Medical Sciences, Kermanshah, Iran
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11
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Keflie TS, Biesalski HK. Micronutrients and bioactive substances: Their potential roles in combating COVID-19. Nutrition 2021; 84:111103. [PMID: 33450678 PMCID: PMC7717879 DOI: 10.1016/j.nut.2020.111103] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2020] [Revised: 11/11/2020] [Accepted: 11/30/2020] [Indexed: 12/13/2022]
Abstract
OBJECTIVES The coronavirus disease 2019 (COVID-19) pandemic is seriously threatening public health and setting off huge economic crises across the world. In the absence of specific drugs for COVID-19, there is an urgent need to look for alternative approaches. Therefore, the aim of this paper was to review the roles of micronutrients and bioactive substances as potential alternative approaches in combating COVID-19. METHODS This review was based on the literature identified using electronic searches in different databases. RESULTS Vitamins (A, B, C, D, and E), minerals (selenium and zinc), and bioactive substances from curcumin, echinacea, propolis, garlic, soybean, green tea, and other polyphenols were identified as having potential roles in interfering with spike glycoproteins, angiotensin converting enzyme 2, and transmembrane protease serine 2 at the entry site, and inhibiting activities of papain-like protease, 3 chymotrypsin-like protease, and RNA-dependent RNA polymerase in the replication cycle of severe acute respiratory syndrome coronavirus 2. Having immunomodulating, antiinflammatory, antioxidant, and antiviral properties, such micronutrients and bioactive substances are consequently promising alterative nutritional approaches to combat COVID-19. CONCLUSIONS The roles of micronutrients and bioactive substances in the fight against COVID-19 are exciting areas of research. This review may suggest directions for further study.
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12
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McKay S, Oranje P, Helin J, Koek JH, Kreijveld E, van den Abbeele P, Pohl U, Bothe G, Tzoumaki M, Aparicio-Vergara M, Mercenier A, Schols H, Albers R. Development of an Affordable, Sustainable and Efficacious Plant-Based Immunomodulatory Food Ingredient Based on Bell Pepper or Carrot RG-I Pectic Polysaccharides. Nutrients 2021; 13:nu13030963. [PMID: 33809720 PMCID: PMC8002328 DOI: 10.3390/nu13030963] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2021] [Revised: 03/10/2021] [Accepted: 03/12/2021] [Indexed: 12/18/2022] Open
Abstract
The prevalence of acute respiratory infections and their impact on quality of life underlies the need for efficacious solutions that are safe, sustainable and economically viable. Polysaccharides in several (traditional) plant extracts have been shown to be immunostimulatory, and some studies suggest beneficial effects against respiratory infections. The aim of this study was to (i) identify the active polysaccharide constituents from affordable and renewable crops (bell pepper and carrot) using activity-guided fractionation, (ii) evaluate in vitro effects on innate immune responses (phagocytosis and cytokine secretion), microbiota modulation and production of short chain fatty acids, followed by (iii) the evaluation of effects of a bell pepper extract enriched for the active component in a human proof of concept study. We identified rhamnogalacturonan-I (RG-I) as the nutricophore responsible for the immunostimulatory activity with substantial structural and functional equivalence between bell pepper (bp) and carrot (c). The in vitro studies showed that bpRG-I and cRG-I comprise similar immune- and microbiota modulatory potential and the human study demonstrated that bpRG-I was well tolerated and enhanced innate immune responsiveness in vivo. This is an important step towards testing the efficacy of RG-I from bpRG-I or cRG-I in an infection trial in humans.
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Affiliation(s)
- Sue McKay
- Suze Consulting, Voorweg 65, 3233 SJ Oostvoorne, The Netherlands;
| | - Paul Oranje
- IMcoMET BV, Marconistraat 16, 3029 AK Rotterdam, The Netherlands;
| | - Jari Helin
- Glykos Finland Oy, Viikinkaari 6, FI-00790 Helsinki, Finland;
| | - Jean H. Koek
- Unilever, Foods Innovation Centre, Bronland 14, 6708 WH Wageningen, The Netherlands;
| | - Ellen Kreijveld
- Rijk Zwaan, Burgemeester Crezéelaan 40, P.O. Box 40, 2678 KX De Lier, The Netherlands;
| | | | - Ute Pohl
- Analyze & Realize GmbH, Waldseeweg 6, 13467 Berlin, Germany; (U.P.); (G.B.)
| | - Gordana Bothe
- Analyze & Realize GmbH, Waldseeweg 6, 13467 Berlin, Germany; (U.P.); (G.B.)
| | - Maria Tzoumaki
- Nutrileads BV, Bronland 12-N, 6708 WH Wageningen, The Netherlands; (M.T.); (M.A.-V.); (A.M.)
| | | | - Annick Mercenier
- Nutrileads BV, Bronland 12-N, 6708 WH Wageningen, The Netherlands; (M.T.); (M.A.-V.); (A.M.)
| | - Henk Schols
- Laboratory of Food Chemistry, Wageningen University, Bornse Weilanden 9, 6708 WG Wageningen, The Netherlands;
| | - Ruud Albers
- Nutrileads BV, Bronland 12-N, 6708 WH Wageningen, The Netherlands; (M.T.); (M.A.-V.); (A.M.)
- Correspondence:
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Ghosh R, Bryant DL, Farone AL. Panax quinquefolius (North American Ginseng) Polysaccharides as Immunomodulators: Current Research Status and Future Directions. Molecules 2020; 25:E5854. [PMID: 33322293 PMCID: PMC7763949 DOI: 10.3390/molecules25245854] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2020] [Revised: 12/09/2020] [Accepted: 12/09/2020] [Indexed: 02/07/2023] Open
Abstract
Panax quinquefolius (North American ginseng, NAG) is a popular medicinal plant used widely in traditional medicine. NAG products are currently available in various forms such as roots, extracts, nutraceuticals, dietary supplements, energy drinks, etc. NAG polysaccharides are recognized as one of the major bioactive ingredients. However, most NAG reviews are focused on ginsenosides with little information on polysaccharides. NAG polysaccharides have demonstrated a therapeutic activity in numerous studies, in which many of the bioactivities involve regulation of the immune response. The purpose of this review is to summarize the structural features and the immunomodulatory properties of crude, partially purified, and pure polysaccharides isolated from NAG. Receptors of the innate immune system that potentially bind to NAG polysaccharides and the respective signal transduction pathways initiated by these compounds are discussed. Major challenges, recent innovations, and future directions in NAG polysaccharide research are also summarized.
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Affiliation(s)
- Rajarshi Ghosh
- Department of Biochemistry, University of Missouri, Columbia, MO 65211, USA;
| | - Daniel L. Bryant
- Department of Biology, Middle Tennessee State University, Murfreesboro, TN 37132, USA;
- Tennessee Center for Botanical Medicine Research, Middle Tennessee State University, Murfreesboro, TN 37132, USA
| | - Anthony L. Farone
- Department of Biology, Middle Tennessee State University, Murfreesboro, TN 37132, USA;
- Tennessee Center for Botanical Medicine Research, Middle Tennessee State University, Murfreesboro, TN 37132, USA
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Antonelli M, Donelli D, Firenzuoli F. Ginseng integrative supplementation for seasonal acute upper respiratory infections: A systematic review and meta-analysis. Complement Ther Med 2020; 52:102457. [PMID: 32951718 PMCID: PMC7305750 DOI: 10.1016/j.ctim.2020.102457] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2020] [Revised: 05/28/2020] [Accepted: 06/01/2020] [Indexed: 01/24/2023] Open
Abstract
BACKGROUND The aim of the review was to assess whether ginseng can be a useful supplementation for seasonal acute upper respiratory infections (SAURIs). METHODS All clinical studies investigating ginseng efficacy for the treatment or prevention of SAURIs were included in the review. Medline, EMBASE, Web of Science, Scopus, Cochrane Library, Google Scholar were systematically screened for relevant articles up to May 26th, 2020. The risk of bias was assessed with the Cochrane tool (RoB 2). RESULTS Nine articles (describing ten trials about P. ginseng or P. quinquefolius) were included in the review. Evidence globally indicated some useful activity of intervention when administered in adjunct to influenza vaccination. The results of our quantitative synthesis suggested a significant effect on SAURIs incidence (RR = 0.69 [95 % C.I. 0.52 to 0.90], p < 0.05), as well as a significant reduction of their duration if only studies with healthy individuals were included in the analysis (MD=-3.11 [95 % C.I.-5.81 to -0.40], p < 0.05). However, the risk of bias was high-to-unclear for most included trials, and publication bias couldn't be excluded. DISCUSSION Limitations of existing evidence don't allow to draw conclusions on the topic. Nevertheless, it is not excluded that ginseng supplementation in adjunct to influenza vaccination and standard care might be useful for SAURIs prevention and management in healthy adult subjects, but further high-quality trials are needed to support this hypothesis. OTHER This research was not funded. The protocol was registered in PROSPERO under the following code: CRD42020156235.
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Affiliation(s)
- Michele Antonelli
- Terme di Monticelli, Parma, Italy; Research and Innovation Center in Phytotherapy and Integrated Medicine (CERFIT), Careggi University Hospital, Florence, Italy; Institute of Public Health, University of Parma, Parma, Italy.
| | - Davide Donelli
- Terme di Monticelli, Parma, Italy; Research and Innovation Center in Phytotherapy and Integrated Medicine (CERFIT), Careggi University Hospital, Florence, Italy; AUSL-IRCCS Reggio Emilia, Italy
| | - Fabio Firenzuoli
- Research and Innovation Center in Phytotherapy and Integrated Medicine (CERFIT), Careggi University Hospital, Florence, Italy
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15
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Iqbal H, Rhee DK. Ginseng alleviates microbial infections of the respiratory tract: a review. J Ginseng Res 2020; 44:194-204. [PMID: 32148400 PMCID: PMC7031735 DOI: 10.1016/j.jgr.2019.12.001] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2019] [Revised: 11/25/2019] [Accepted: 12/04/2019] [Indexed: 12/26/2022] Open
Abstract
The detrimental impact of air pollution as a result of frequent exposure to fine particles posed a global public health risk mainly to the pulmonary disorders in pediatric and geriatric population. Here, we reviewed the current literature regarding the role of ginseng and/or its components as antimicrobials, especially against pathogens that cause respiratory infections in animal and in vitro models. Some of the possible mechanisms for ginseng-mediated viral inhibition suggested are improvements in systemic and mucosa-specific antibody responses, serum hemagglutinin inhibition, lymphocyte proliferation, cell survival rate, and viral clearance in the lungs. In addition, ginseng reduces the expression levels of proinflammatory cytokines (IFN-γ, TNF-α, IL-2, IL-4, IL-5, IL-6, IL-8) and chemokines produced by airway epithelial cells and macrophages, thus preventing weight loss. In case of bacterial infections, ginseng acts by alleviating inflammatory cytokine production, increasing survival rates, and activating phagocytes and natural killer cells. In addition, ginseng inhibits biofilm formation and induces the dispersion and dissolution of mature biofilms. Most clinical trials revealed that ginseng, at various dosages, is a safe and effective method of seasonal prophylaxis, relieving the symptoms and reducing the risk and duration of colds and flu. Taken together, these findings support the efficacy of ginseng as a therapeutic and prophylactic agent for respiratory infections.
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Key Words
- ARI, acute respiratory illness
- Bacteria
- COPD, chronic obstructive pulmonary disease
- Clinical trials
- GSLS, ginseng stem–leaf saponins
- Ginseng
- HRV, human rhinovirus
- IFN, interferon
- IL, interleukin
- IgA, immunoglobulin A
- PD, protopanaxadiol
- PT, protopanaxatriol
- ROS, reactive oxygen species
- RSV, respiratory syncytial virus
- RTIs, respiratory tract infections
- Respiratory tract infections
- TNF-α, tumor necrosis factor-alpha
- Virus
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Affiliation(s)
| | - Dong-kwon Rhee
- School of Pharmacy, Sungkyunkwan University, Suwon, Republic of Korea
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16
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Childs A, Zullo AR, Joyce NR, McConeghy KW, van Aalst R, Moyo P, Bosco E, Mor V, Gravenstein S. The burden of respiratory infections among older adults in long-term care: a systematic review. BMC Geriatr 2019; 19:210. [PMID: 31382895 PMCID: PMC6683564 DOI: 10.1186/s12877-019-1236-6] [Citation(s) in RCA: 58] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2019] [Accepted: 07/30/2019] [Indexed: 11/22/2022] Open
Abstract
Background Respiratory infections among older adults in long-term care facilities (LTCFs) are a major global concern, yet a rigorous systematic synthesis of the literature on the burden of respiratory infections in the LTCF setting is lacking. To address the critical need for evidence regarding the global burden of respiratory infections in LTCFs, we assessed the burden of respiratory infections in LTCFs through a systematic review of the published literature. Methods We identified articles published between April 1964 and March 2019 through searches of PubMed (MEDLINE), EMBASE, and the Cochrane Library. Experimental and observational studies published in English that included adults aged ≥60 residing in LTCFs who were unvaccinated (to identify the natural infection burden), and that reported measures of occurrence for influenza, respiratory syncytial virus (RSV), or pneumonia were included. Disagreements about article inclusion were discussed and articles were included based on consensus. Data on study design, population, and findings were extracted from each article. Findings were synthesized qualitatively. Results A total of 1451 articles were screened for eligibility, 345 were selected for full-text review, and 26 were included. Study population mean ages ranged from 70.8 to 90.1 years. Three (12%) studies reported influenza estimates, 7 (27%) RSV, and 16 (62%) pneumonia. Eighteen (69%) studies reported incidence estimates, 7 (27%) prevalence estimates, and 1 (4%) both. Seven (27%) studies reported outbreaks. Respiratory infection incidence estimates ranged from 1.1 to 85.2% and prevalence estimates ranging from 1.4 to 55.8%. Influenza incidences ranged from 5.9 to 85.2%. RSV incidence proportions ranged from 1.1 to 13.5%. Pneumonia prevalence proportions ranged from 1.4 to 55.8% while incidence proportions ranged from 4.8 to 41.2%. Conclusions The reported incidence and prevalence estimates of respiratory infections among older LTCF residents varied widely between published studies. The wide range of estimates offers little useful guidance for decision-making to decrease respiratory infection burden. Large, well-designed epidemiologic studies are therefore still necessary to credibly quantify the burden of respiratory infections among older adults in LTCFs, which will ultimately help inform future surveillance and intervention efforts. Electronic supplementary material The online version of this article (10.1186/s12877-019-1236-6) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Arielle Childs
- Department of Epidemiology, Brown University School of Public Health, Providence, RI, USA.,Department of Health Services, Policy, and Practice, Brown University School of Public Health, 121 South Main Street, Box G-S121-8, Providence, RI, 02912, USA
| | - Andrew R Zullo
- Department of Epidemiology, Brown University School of Public Health, Providence, RI, USA. .,Department of Health Services, Policy, and Practice, Brown University School of Public Health, 121 South Main Street, Box G-S121-8, Providence, RI, 02912, USA. .,Center of Innovation in Long-Term Services and Supports, Providence Veterans Affairs Medical Center, Providence, RI, USA.
| | - Nina R Joyce
- Department of Epidemiology, Brown University School of Public Health, Providence, RI, USA.,Department of Health Services, Policy, and Practice, Brown University School of Public Health, 121 South Main Street, Box G-S121-8, Providence, RI, 02912, USA
| | - Kevin W McConeghy
- Department of Health Services, Policy, and Practice, Brown University School of Public Health, 121 South Main Street, Box G-S121-8, Providence, RI, 02912, USA.,Center of Innovation in Long-Term Services and Supports, Providence Veterans Affairs Medical Center, Providence, RI, USA
| | - Robertus van Aalst
- Sanofi Pasteur, Swiftwater, PA, USA.,Faculty of Medical Sciences, University of Groningen, Groningen, NL, the Netherlands
| | - Patience Moyo
- Department of Health Services, Policy, and Practice, Brown University School of Public Health, 121 South Main Street, Box G-S121-8, Providence, RI, 02912, USA
| | - Elliott Bosco
- Department of Health Services, Policy, and Practice, Brown University School of Public Health, 121 South Main Street, Box G-S121-8, Providence, RI, 02912, USA
| | - Vincent Mor
- Department of Health Services, Policy, and Practice, Brown University School of Public Health, 121 South Main Street, Box G-S121-8, Providence, RI, 02912, USA.,Center of Innovation in Long-Term Services and Supports, Providence Veterans Affairs Medical Center, Providence, RI, USA
| | - Stefan Gravenstein
- Department of Health Services, Policy, and Practice, Brown University School of Public Health, 121 South Main Street, Box G-S121-8, Providence, RI, 02912, USA.,Center of Innovation in Long-Term Services and Supports, Providence Veterans Affairs Medical Center, Providence, RI, USA
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17
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Hwang JH, Park SH, Choi EK, Jung SJ, Pyo MK, Chae SW. A randomized, double-blind, placebo-controlled pilot study to assess the effects of protopanaxadiol saponin-enriched ginseng extract and pectinase-processed ginseng extract on the prevention of acute respiratory illness in healthy people. J Ginseng Res 2019; 44:697-703. [PMID: 32913399 PMCID: PMC7471208 DOI: 10.1016/j.jgr.2019.01.002] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2018] [Revised: 11/28/2018] [Accepted: 01/14/2019] [Indexed: 12/13/2022] Open
Abstract
Background GS-3K8 and GINST, both of which are modified ginseng extracts, have never been examined in terms of their effectiveness for the prevention of acute respiratory illness (ARI) in humans. We conducted a pilot study to assess the feasibility of performing a large-scale, randomized, controlled trial. Methods This study was a randomized, double-blind, placebo-controlled, pilot study at a single center from October 2014 to March 2015. The 45 healthy applicants were randomly divided into the GS-3K8 (n = 15), GINST (n = 15), and placebo groups (n = 15). The study drug was administered as a capsule (500 mg/cap and 3000 mg/day). GS-3K8 contained 6.31 mg/g of Rg1, 15.05 mg/g of Re, 30.84 mg/g of Rb1, 15.02 mg/g of Rc, 12.44 mg/g of Rb2, 6.97 mg/g of Rd, 1.59 mg/g of Rg3, 3.25 mg/g of Rk1, and 4.84 mg/g of Rg5. GINST contained 7.54 mg/g of Rg1, 1.87 mg/g of Re, 5.42 mg/g of Rb1, 0.29 mg/g of Rc, 0.36 mg/g of Rb2, 0.70 mg/g of Rd, and 6.3 mg/g of compound K. The feasibility criteria were the rates of recruitment, drug compliance, and successful follow-up. The primary clinical outcome measure was the incidence of ARI. The secondary clinical outcome measures were the duration of symptoms. Results The rate of recruitment was 11.3 participants per week. The overall rate of completed follow-up was 97.8%. The mean compliance rate was 91.64 ± 9.80%, 95.28 ± 5.75%, and 89.70 ± 8.99% in the GS-3K8, GINST, and placebo groups, respectively. The incidence of ARI was 64.3% (9/14; 95% confidence interval [CI], 31.4-91.1%), 26.7% (4/15; 95% CI, 4.3-49.0%), and 80.0% (12/15; 95% CI, 54.8-93.0%) in the GS-3K8, GINST, and placebo groups, respectively. The average days of symptoms were 3.89 ± 4.65, 9.25 ± 7.63, and 12.25 ± 12.69 in the GS-3K8, GINST, and placebo groups, respectively. Conclusion The results support the feasibility of a full-scale trial. GS-3K8 and GINST appear to have a positive tendency toward preventing the development of ARI and reducing the symptom duration. A randomized controlled trial is needed to confirm these findings.
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Affiliation(s)
- Jeong-Hwan Hwang
- Department of Internal Medicine, Jeonbuk National University Medical School, Jeonju, Jeonbuk, Republic of Korea.,Research Institute of Clinical Medicine of Jeonbuk National University, Jeonju, Jeonbuk, Republic of Korea.,Biomedical Research Institute of Jeonbuk National University Hospital, Jeonju, Jeonbuk, Republic of Korea
| | - Soo-Hyun Park
- Clinical Trial Center for Functional Foods, Jeonbuk National University Hospital, Jeonju, Jeonbuk, Republic of Korea
| | - Eun-Kyung Choi
- Clinical Trial Center for Functional Foods, Jeonbuk National University Hospital, Jeonju, Jeonbuk, Republic of Korea
| | - Su-Jin Jung
- Clinical Trial Center for Functional Foods, Jeonbuk National University Hospital, Jeonju, Jeonbuk, Republic of Korea
| | - Mi Kyung Pyo
- International Ginseng and Herb Research Institute, Geumsan, Republic of Korea
| | - Soo-Wan Chae
- Clinical Trial Center for Functional Foods, Jeonbuk National University Hospital, Jeonju, Jeonbuk, Republic of Korea.,Department of Pharmacology, Jeonbuk National University Medical School, Jeonju, Jeonbuk, Republic of Korea
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18
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Davis MP, Behm B. Ginseng: A Qualitative Review of Benefits for Palliative Clinicians. Am J Hosp Palliat Care 2019; 36:630-659. [PMID: 30686023 DOI: 10.1177/1049909118822704] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Ginseng has been used for centuries to treat various diseases and has been commercially developed and cultivated in the past 300 years. Ginseng products may be fresh, dried (white), or dried and steamed (red). Extracts may be made using water or alcohol. There are over 50 different ginsenosides identified by chromatography. We did an informal systematic qualitative review that centered on fatigue, cancer, dementia, respiratory diseases, and heart failure, and we review 113 studies in 6 tables. There are multiple potential benefits to ginseng in cancer. Ginseng, in certain circumstances, has been shown to improve dementia, chronic obstructive pulmonary disease, and heart failure through randomized trials. Most trials had biases or unknown biases and so most evidence is of low quality. We review the gaps in the evidence and make some recommendations regarding future studies.
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Affiliation(s)
- Mellar P Davis
- 1 Palliative Care Department, Knapper Cancer Center, Geisinger Medical Center, Danville, PA, USA
| | - Bertrand Behm
- 1 Palliative Care Department, Knapper Cancer Center, Geisinger Medical Center, Danville, PA, USA
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19
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Riaz M, Rahman NU, Zia-Ul-Haq M, Jaffar HZ, Manea R. Ginseng: A dietary supplement as immune-modulator in various diseases. Trends Food Sci Technol 2019. [DOI: 10.1016/j.tifs.2018.11.008] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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22
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Zhang L, Virgous C, Si H. Ginseng and obesity: observations and understanding in cultured cells, animals and humans. J Nutr Biochem 2017; 44:1-10. [DOI: 10.1016/j.jnutbio.2016.11.010] [Citation(s) in RCA: 43] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2016] [Revised: 10/28/2016] [Accepted: 11/17/2016] [Indexed: 12/18/2022]
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Yilmaz Z, Piracha F, Anderson L, Mazzola N. Supplements for Diabetes Mellitus: A Review of the Literature. J Pharm Pract 2016; 30:631-638. [PMID: 27619931 DOI: 10.1177/0897190016663070] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
The primary approach to controlling diabetes involves diet and lifestyle modification combined with pharmacologic interventions. Patients who are interested in exploring dietary supplements in the management of diabetes may have questions about which supplement to choose and whether any issues will arise with their current medication regimen. After reading this review, the pharmacist should be able to identify supplements that may provide benefit to improve diabetes management, understand what potential harm to the patient may occur, and be able to assist the patient in choosing high-quality supplements. This review will focus on the safety and efficacy data surrounding nicotinamide, ginseng, fenugreek, vitamin D, chromium, and cinnamon. These supplements are commonly listed in general circulation periodicals with claims to improve blood sugar management. Efficacy data showed a modest decrease in fasting plasma glucose of -0.96 mmol/dL (-17.29 mg/dL) for fenugreek and -24.59 mg/dL for cinnamon. It remains to be seen whether supplementation with these products can affect outcomes such as morbidity and mortality. Despite many studies being available, the majority lack uniformity across multiple dimensions, including varying participant characteristics, inconsistent formulations of supplement and dose, and differing study durations. This, coupled with variation in quality and purity of commercially available products, prevents universal recommendation for use in diabetes management.
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Affiliation(s)
- Zera Yilmaz
- 1 Memorial Sloan Kettering Cancer Center, Outpatient Pharmacy Department, New York, NY, USA
| | - Fawad Piracha
- 2 College of Pharmacy and Health Sciences, St John's University, Queens, NY, USA
| | - Leeann Anderson
- 2 College of Pharmacy and Health Sciences, St John's University, Queens, NY, USA
| | - Nissa Mazzola
- 2 College of Pharmacy and Health Sciences, St John's University, Queens, NY, USA
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Herbal Medicines for Asthmatic Inflammation: From Basic Researches to Clinical Applications. Mediators Inflamm 2016; 2016:6943135. [PMID: 27478309 PMCID: PMC4958455 DOI: 10.1155/2016/6943135] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2016] [Revised: 05/22/2016] [Accepted: 06/05/2016] [Indexed: 12/18/2022] Open
Abstract
Asthma is one of the most common chronic inflammatory disorders, associated with reversible airflow obstruction, airway hyperresponsiveness, and airway remodeling. This disease has a significant impact on individuals, their families, and society. Standardized therapeutics such as inhaled corticosteroid in combination with long acting β2 agonist have been applied for asthma control; however, complementary and alternative medicines, especially herbal medicines, are still widely used all over the world. A growing body of literature suggests that various herbals or related products might be effective in inhibiting asthmatic inflammation. In this review, we summarize recent advances about the mechanistic studies of herbal medicines on allergic airway inflammation in animal models and their potential application into clinic for asthma control.
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Loh SH, Park JY, Cho EH, Nah SY, Kang YS. Animal lectins: potential receptors for ginseng polysaccharides. J Ginseng Res 2015; 41:1-9. [PMID: 28123316 PMCID: PMC5223067 DOI: 10.1016/j.jgr.2015.12.006] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2015] [Revised: 11/29/2015] [Accepted: 12/04/2015] [Indexed: 02/08/2023] Open
Abstract
Panax ginseng Meyer, belonging to the genus Panax of the family Araliaceae, is known for its human immune system-related effects, such as immune-boosting effects. Ginseng polysaccharides (GPs) are the responsible ingredient of ginseng in immunomodulation, and are classified as acidic and neutral GPs. Although GPs participate in various immune reactions including the stimulation of immune cells and production of cytokines, the precise function of GPs together with its potential receptor(s) and their signal transduction pathways have remained largely unknown. Animal lectins are carbohydrate-binding proteins that are highly specific for sugar moieties. Among many different biological functions in vivo, animal lectins especially play important roles in the immune system by recognizing carbohydrates that are found exclusively on pathogens or that are inaccessible on host cells. This review summarizes the immunological activities of GPs and the diverse roles of animal lectins in the immune system, suggesting the possibility of animal lectins as the potential receptor candidates of GPs and giving insights into the development of GPs as therapeutic biomaterials for many immunological diseases.
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Affiliation(s)
- So Hee Loh
- Department of Biomedical Science and Technology, Institute of Biomedical Science and Technology, Konkuk University, Seoul, Korea
| | - Jin-Yeon Park
- Department of Biomedical Science and Technology, Institute of Biomedical Science and Technology, Konkuk University, Seoul, Korea
| | - Eun Hee Cho
- Department of Biomedical Science and Technology, Institute of Biomedical Science and Technology, Konkuk University, Seoul, Korea
| | - Seung-Yeol Nah
- Ginsentology Research Laboratory and Department of Physiology, College of Veterinary Medicine and Bio/Molecular Informatics Center, Konkuk University, Seoul, Korea
| | - Young-Sun Kang
- Department of Biomedical Science and Technology, Institute of Biomedical Science and Technology, Konkuk University, Seoul, Korea; Department of Veterinary Pharmacology and Toxicology, College of Veterinary Medicine, Konkuk University, Seoul, Korea
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Abstract
Ginseng is commonly used in traditional Chinese medicine as a tonic and an adaptogen to reduce fatigue and boost the immune system. In recent years, ginseng extracts are shown to have both bacteriostatic and bactericidal actions and seem to exert their effects by several mechanisms, including disruption of biofilms, inhibition of quorum-sensing and virulence factors, and altering motility. Also, ginseng extracts are shown to have antifungal properties as demonstrated by their ability to inhibit the growth of several mold and yeast species. Extracts from ginseng root have a strong antiviral activity against the RNA viruses in cell cultures and animal models. In addition to the antimicrobial activities, ginseng extracts are shown to possess immunomodulatory properties involved in the amelioration of infections. The present paper describes the antimicrobial effects of ginseng and its extracts.
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Affiliation(s)
- Karina Kachur
- a Department of Biology , Lakehead University , Thunder Bay , Ontario , Canada P7B 5E1
| | - Zacharias E Suntres
- a Department of Biology , Lakehead University , Thunder Bay , Ontario , Canada P7B 5E1.,b Medical Sciences Division , Northern Ontario School of Medicine , Thunder Bay , Ontario , Canada P7B 5E1
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Jovanovski E, Peeva V, Sievenpiper JL, Jenkins AL, Desouza L, Rahelic D, Sung MK, Vuksan V. Modulation of endothelial function by Korean red ginseng (Panax ginseng C.A. Meyer) and its components in healthy individuals: a randomized controlled trial. Cardiovasc Ther 2015; 32:163-9. [PMID: 24758417 DOI: 10.1111/1755-5922.12077] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
AIMS Ginseng root and its derivatives remain atop the most widely used medicinal herbs in cardiovascular disease, despite inadequate substantiation of efficacy. We previously reported the potential of Korean red ginseng (KRG) to affect vascular tone by decreasing arterial wave reflection via an unknown mechanism. Given the preclinical link between ginseng intake and vasoactivity related to nitric oxide (NO) production, we sought to directly evaluate the effects of KRG root and its major root components, on an established noninvasive measure of endothelial function. METHODS In an acute, randomized, placebo-controlled, double-blind, crossover design, 16 healthy participants (9M:7F, age:30 ± 9y, BMI: 24 kg ±3 kg/m(2) , systolicBP/diastolicBP: 109 ± 11/66 ± 8 mmHg) on four occasions were administered: KRG root (3 g), KRG ginsenosides extract, KRG polysaccharides extract, and cornstarch control. Extracted fractions were delivered at doses bioequivalent to those found in 3 g of KRG. Flow-mediated vasodilatation (FMD) assessment, preceding a brachial blood pressure measurement, was performed at baseline and at 90 and 180 min posttreatment to assess endothelial function. RESULTS KRG significantly improved FMD posttreatment. Maximal vasodilatation of Δ2.57 ± 2.8% occurred at 180 min compared with control (Δ-0.83 ± 2.7%, P = 0.003 for all comparisons). The ginsenoside extract produced a comparable response (Δ1.75 ± 2.6%), but not the polysaccharide fraction (Δ0.10 ± 2.7%). Brachial blood pressure remained unchanged for all treatments (P = 0.45). CONCLUSIONS KRG acutely improved endothelial function in healthy individuals, which appears to be attributable to its ginsenoside containing fraction. Our data confirm preclinical data and support the potential for these compounds as targets for therapeutic strategies in disorders involving endothelial dysfunction.
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Affiliation(s)
- Elena Jovanovski
- Clinical Nutrition and Risk Factor Modification Centre, St. Michael's Hospital, Toronto, ON, Canada; Department of Nutritional Sciences, Faculty of Medicine, University of Toronto, Toronto, ON, Canada
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Cho YJ, Son HJ, Kim KS. A 14-week randomized, placebo-controlled, double-blind clinical trial to evaluate the efficacy and safety of ginseng polysaccharide (Y-75). J Transl Med 2014; 12:283. [PMID: 25297058 PMCID: PMC4196019 DOI: 10.1186/s12967-014-0283-1] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2014] [Accepted: 09/24/2014] [Indexed: 11/16/2022] Open
Abstract
Background The Y-75 (Ginsan) acidic polysaccharide from Korean Panax ginseng has been shown to function as an immunomodulatory molecule. However, the efficacy of Y-75 has not been evaluated in clinical trial. Methods We verified Y-75 (6 g/day) for safety and immune efficacy in 72 healthy volunteers aged 50–75 years using a randomized, placebo-controlled, parallel, double-blind study. The activities of natural killer (NK) cells and peripheral blood phagocytes, as well as serum levels of monocyte-derived mediators, were assessed before and after administration for 8 and 14 weeks. This trial is registered at ClinicalTrials.gov (NCT02161198). Results Y-75 significantly enhanced NK cell cytotoxic activity by 35.2% and 40.2% from baseline after administration for 8 and 14 weeks, respectively. The phagocytic activity of peripheral blood cells was also significantly increased by 25.2% and 39.4% and serum level of TNF-α by 38.2% and 44.5% after treatment for 8 and 14 weeks, respectively. Differences in the efficacy of variables compared to the placebo group were also significant. Administration of Y-75 was well tolerated without treatment-related adverse events or alteration of complete blood cell count or blood chemistry over the entire study period. Conclusion Y-75 was shown to be a safe and potentially effective natural alternative for enhancing immune function.
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Affiliation(s)
| | | | - Kyung-Soo Kim
- Department of Family Medicine, Seoul St, Mary's Hospital, The Catholic University of Korea, Banpo-ro 222, Seocho-gu 137-701, Seoul, Republic of Korea.
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Korean red ginseng extract alleviates atherosclerotic lesions in apolipoprotein E knockout mice. Food Sci Biotechnol 2014. [DOI: 10.1007/s10068-014-0174-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022] Open
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Uchida M, Pogorzelska-Maziarz M, Smith PW, Larson E. Infection prevention in long-term care: a systematic review of randomized and nonrandomized trials. J Am Geriatr Soc 2013; 61:602-14. [PMID: 23581914 DOI: 10.1111/jgs.12175] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
The purpose of this systematic review was to critically review and synthesize current evidence and the methodological quality of nonpharmacological infection-prevention interventions in long-term care (LTC) facilities for older adults. Two reviewers searched three electronic databases for studies published over the last decade assessing randomized and nonrandomized trials designed to reduce infections in older adults in which primary outcomes were infection rates and reductions of risk factors related to infections. To establish clarity and standardized reporting of findings, the Preferred Reporting Items for Systematic Reviews and Meta-Analyses checklist was used. Data extracted included study design, sample size, type and duration of interventions, outcome measures reported, and findings. Two reviewers independently assessed study quality using a validated quality assessment tool. Twenty-four articles met inclusion criteria; the majority were randomized control trials (67%) in which the primary purpose was to reduce pneumonia (66%). Thirteen (54%) studies reported statistically significant results in favor of interventions on at least one of their outcome measures. The methodological clarity of available evidence was limited, placing them at potential risk of bias. Gaps and inconsistencies surrounding interventions in LTC are evident. Future interventional studies need to enhance methodological rigor using clearly defined outcome measures and standardized reporting of findings.
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Affiliation(s)
- Mayuko Uchida
- Center for Health Policy, School of Nursing, Columbia University, New York, NY 10032, USA.
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Lee CS, Lee JH, Oh M, Choi KM, Jeong MR, Park JD, Kwon DY, Ha KC, Park EO, Lee N, Kim SY, Choi EK, Kim MG, Chae SW. Preventive effect of Korean red ginseng for acute respiratory illness: a randomized and double-blind clinical trial. J Korean Med Sci 2012; 27:1472-8. [PMID: 23255845 PMCID: PMC3524425 DOI: 10.3346/jkms.2012.27.12.1472] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/01/2012] [Accepted: 10/03/2012] [Indexed: 11/20/2022] Open
Abstract
Korean Red Ginseng (KRG) is a functional food and has been well known for keeping good health due to its anti-fatigue and immunomodulating activities. However, there is no data on Korean red ginseng for its preventive activity against acute respiratory illness (ARI). The study was conducted in a randomized, double-blinded, placebo-controlled trial in healthy volunteers (Clinical Trial Number: NCT01478009). Our primary efficacy end point was the number of ARI reported and secondary efficacy end point was severity of symptoms, number of symptoms, and duration of ARI. A total of 100 volunteers were enrolled in the study. Fewer subjects in the KRG group reported contracting at least 1 ARI than in the placebo group (12 [24.5%] vs 22 [44.9%], P = 0.034), the difference was statistically significant between the two groups. The symptom duration of the subjects who experienced the ARI, was similar between the two groups (KRG vs placebo; 5.2 ± 2.3 vs 6.3 ± 5.0, P = 0.475). The symptom scores were low tendency in KRG group (KRG vs placebo; 9.5 ± 4.5 vs 17.6 ± 23.1, P = 0.241). The study suggests that KRG may be effective in protecting subjects from contracting ARI, and may have the tendency to decrease the duration and scores of ARI symptoms.
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Affiliation(s)
- Chang-Seop Lee
- Department of Internal Medicine, Chonbuk National University Medical School, Jeonju, Korea.
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Influence of sulphur-fumigation on the quality of white ginseng: A quantitative evaluation of major ginsenosides by high performance liquid chromatography. Food Chem 2012; 135:1141-7. [DOI: 10.1016/j.foodchem.2012.05.116] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2012] [Revised: 04/18/2012] [Accepted: 05/30/2012] [Indexed: 11/19/2022]
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Yoo DG, Kim MC, Park MK, Song JM, Quan FS, Park KM, Cho YK, Kang SM. Protective effect of Korean red ginseng extract on the infections by H1N1 and H3N2 influenza viruses in mice. J Med Food 2012; 15:855-62. [PMID: 22856395 DOI: 10.1089/jmf.2012.0017] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
Ginseng has been used in humans for thousands of years and is known to have multiple biological and immunomodulatory effects. In this study, we investigated whether Korean red ginseng extract would have preventive and antiviral effects on influenza virus infection. Oral administration to mice of red ginseng extract prior to infection significantly increased survival after infection with the 2009 pandemic H1N1 virus. Daily oral treatment of vaccinated mice with red ginseng extract provided enhanced cross-protection against antigenically distinct H1N1 and H3N2 influenza viruses. Naive mice that were infected with virus mixed with red ginseng extract showed significantly enhanced protection, lower levels of lung viral titers and interleukin-6, but higher levels of interferon-γ compared with control mice having virus infections without red ginseng extract, indicating an antiviral effect of ginseng. In addition, ginseng extract exhibited inhibitory effects on the growth of influenza virus in vitro. This study provides evidence that intake of ginseng extract will have beneficial effects on preventing lethal infection with newly emerging influenza viruses.
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Affiliation(s)
- Dae-Goon Yoo
- Department of Microbiology and Immunology, Emory University School of Medicine, Atlanta, Georgia, USA
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Agustina R, Kok FJ, van de Rest O, Fahmida U, Firmansyah A, Lukito W, Feskens EJM, van den Heuvel EGHM, Albers R, Bovee-Oudenhoven IMJ. Randomized trial of probiotics and calcium on diarrhea and respiratory tract infections in Indonesian children. Pediatrics 2012; 129:e1155-64. [PMID: 22492764 DOI: 10.1542/peds.2011-1379] [Citation(s) in RCA: 72] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
OBJECTIVE To investigate the effects of calcium and probiotics on the incidence and duration of acute diarrhea and acute respiratory tract infections (ARTIs) in low-socioeconomic communities of Jakarta, Indonesia. METHODS We conducted a 6-month, double-blind, placebo-controlled study in 494 healthy children aged 1 to 6 years who received low-lactose milk with low calcium content (LC; ∼50 mg/day; n = 124), regular calcium content (RC; ∼440 mg/day; n = 126), RC with 5.10(8) colony-forming units per day of Lactobacillus casei CRL431 (casei; n = 120), or RC with 5.10(8) colony-forming units per day of Lactobacillus reuteri DSM17938 (reuteri; n = 124). Number and duration of diarrhea and ARTIs episodes were primary and secondary outcomes, respectively. RESULTS Incidence of World Health Organization-defined diarrhea (≥3 loose/liquid stools in 24 hours) was not significantly different between RC and LC (relative risk [RR]: 0.99 [95% confidence interval (CI): 0.62-1.58]), between casei and RC (RR: 1.21 [95% CI: 0.76-1.92]), or between reuteri and RC (RR: 0.76 [95% CI: 0.46-1.25]) groups. Incidence of all reported diarrhea (≥2 loose/liquid stools in 24 hours) was significantly lower in the reuteri versus RC group (RR: 0.68 [95% CI: 0.46-0.99]). Irrespective of the definition used, reuteri significantly reduced diarrhea incidence in children with lower nutritional status (below-median height-and-weight-for-age z score). None of the interventions affected ARTIs. CONCLUSIONS RC milk, alone or with L casei, did not reduce diarrhea or ARTIs in Indonesian children. L reuteri may prevent diarrhea, especially in children with lower nutritional status.
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Affiliation(s)
- Rina Agustina
- SEAMEO RECFON (Southeast Asian Ministers of Education Organization Regional Center for Food and Nutrition), University of Indonesia, Jakarta, Indonesia
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Trammell RA, Cox L, Pikora J, Murphy LL, Toth LA. Evaluation of an extract of North American ginseng (Panax quinquefolius L.) in Candida albicans-infected complement-deficient mice. JOURNAL OF ETHNOPHARMACOLOGY 2012; 139:414-421. [PMID: 22138349 DOI: 10.1016/j.jep.2011.11.026] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/07/2011] [Revised: 11/10/2011] [Accepted: 11/13/2011] [Indexed: 05/31/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Ginseng is a widely consumed aromatic herb that is purported to have health benefits. Several studies report a beneficial impact of ginseng or its derivatives on Candida albicans infection in mice and suggest that its immune-modulatory properties contribute to this effect. However, these studies generally administered ginseng to experimental animals by injection, whereas people typically ingest ginseng. Furthermore, although disseminated candiasis is typically a disease of immune-impaired hosts, previous studies have generally used immune competent host species in the assessments. MATERIALS AND METHODS We evaluated the efficacy of an ingested extract of ginseng against Candida albicans infection in DBA/2J mice, which are highly susceptible to Candida albicans infection. A ginseng extract was added to the drinking water for two days before and for the remainder of the study after intravenous inoculation of mice with Candida albicans. Mice were evaluated for morbidity, mortality, Candida albicans titers, and concentrations of inflammatory cytokines and chemokines. RESULTS Ingestion of the ginseng extract did not significantly affect overall morbidity or mortality. However, ingestion of the extract was associated with significantly lower renal titers of Candida albicans and with significantly lower concentrations of some inflammatory cytokines in kidney and/or serum. CONCLUSIONS Assessment of morbidity, mortality, inflammatory markers, and renal titers after spontaneous ingestion of ginseng by susceptible hosts represents a comprehensive approach to characterizations of therapeutic efficacy against infectious agents. Our findings extend previous reports of the efficacy of ginseng against Candida albicans by demonstrating significant reductions in infectious load and some markers of inflammation in susceptible mice. Our data therefore support further assessment of the immune-modulatory properties of this widely consumed herb and its components.
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Affiliation(s)
- Rita A Trammell
- Department of Internal Medicine, Southern Illinois University School of Medicine, Springfield, IL 62794, United States
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High KP, Case D, Hurd D, Powell B, Lesser G, Falsey AR, Siegel R, Metzner-Sadurski J, Krauss JC, Chinnasami B, Sanders G, Rousey S, Shaw EG. A randomized, controlled trial of Panax quinquefolius extract (CVT-E002) to reduce respiratory infection in patients with chronic lymphocytic leukemia. ACTA ACUST UNITED AC 2012; 10:195-201. [PMID: 22266154 DOI: 10.1016/j.suponc.2011.10.005] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2011] [Revised: 10/08/2011] [Accepted: 10/14/2011] [Indexed: 11/26/2022]
Abstract
BACKGROUND Chronic lymphocytic leukemia (CLL) patients are at high risk for acute respiratory illness (ARI). OBJECTIVE We evaluated the safety and efficacy of a proprietary extract of Panax quinquefolius, CVT-E002, in reducing ARI. METHODS This was a double-blind, placebo-controlled, randomized trial of 293 subjects with early-stage, untreated CLL conducted January-March 2009. RESULTS ARI was common, occurring on about 10% of days during the study period. There were no significant differences of the 2 a priori primary end points: ARI days (8.5 ± 17.2 for CVT-E002 vs 6.8 ± 13.3 for placebo) and severe ARI days (2.9 ± 9.5 for CVT-E002 vs 2.6 ± 9.8 for placebo). However, 51% of CVT-E002 vs 56% of placebo recipients experienced at least 1 ARI (difference, -5%; 95% confidence interval [CI], -16% to 7%); more intense ARI occurred in 32% of CVT-E002 vs 39% of placebo recipients (difference, -7%; 95% CI, -18% to 4%), and symptom-specific evaluation showed reduced moderate to severe sore throat (P = .004) and a lower rate of grade ≥3 toxicities (P = .02) in CVT-E002 recipients. Greater seroconversion (4-fold increases in antibody titer) vs 9 common viral pathogens was documented in CVT-E002 recipients (16% vs 7%, P = .04). LIMITATIONS Serologic evaluation of antibody titers was not tied to a specific illness, but covered the entire study period. CONCLUSION CVT-E002 was well tolerated. It did not reduce the number of ARI days or antibiotic use; however, there was a trend toward reduced rates of moderate to severe ARI and significantly less sore throat, suggesting that the increased rate of seroconversion most likely reflects CVT-E002-enhanced antibody responses.
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Affiliation(s)
- Kevin P High
- Wake Forest University School of Medicine, Winston-Salem, North Carolina 27157-1042, USA.
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Lee NH, Son CG. Systematic review of randomized controlled trials evaluating the efficacy and safety of ginseng. J Acupunct Meridian Stud 2011; 4:85-97. [PMID: 21704950 DOI: 10.1016/s2005-2901(11)60013-7] [Citation(s) in RCA: 110] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2010] [Accepted: 02/17/2011] [Indexed: 11/29/2022] Open
Abstract
This systematic review aims to evaluate the available evidence from randomized clinical trials of the clinical efficacy and safety of ginseng. Systematic literature searches were performed in 13 databases up to March 2009 without language restriction. All randomized clinical trials evaluating the clinical effects or safety of the use of ginseng monopreparations (Panax ginseng or P. quinquefolium) were considered for inclusion. A total of 411 potentially relevant studies were identified and 57 randomized clinical trials were included. The main indications included glucose metabolism, physical performance, psychomotor function, sexual function, cardiac function, pulmonary disease, and cerebrovascular disease. We found strong evidence of a positive effect of ginseng on glucose metabolism, psychomotor function, and pulmonary disease, whereas evidence suggests that ginseng is not effective at enhancing physical performance. However, ginseng generally has a good safety profile and the incidence of adverse effects seems to be low. In conclusion, our review compiles the evidence on the use of ginseng, finding a strong positive potential for glucose metabolism, psychomotor function, and pulmonary disease, but not for physical performance enhancement.
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Affiliation(s)
- Nam-Hun Lee
- Liver and Immunology Research Center, Daejeon Oriental Hospital of Daejeon University, Korea
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Ebeling C, Wu Y, Skappak C, Gordon JR, Ilarraza R, Adamko DJ. Compound CVT-E002 attenuates allergen-induced airway inflammation and airway hyperresponsiveness, in vivo. Mol Nutr Food Res 2011; 55:1905-8. [PMID: 22038929 DOI: 10.1002/mnfr.201100216] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2011] [Revised: 08/11/2011] [Accepted: 08/22/2011] [Indexed: 01/08/2023]
Abstract
Immune modulation has been a sought after means of therapy for atopic diseases. CVT-E002 is an extract derived from North American Ginseng shown to promote T-helper-1-like responses. We determined what effect CVT-E002 could have in a mouse model of atopic asthma. We report that oral CVT-E002 inhibited the development of allergic airway inflammation and airway hyperresponsiveness. This correlated with an increased presence of interferon-γ in the lung, and also increased regulatory T cells and IL-10. The ability of CVT-E002 to induce regulatory T-cell development was also seen in human in vitro co-cultures.
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Affiliation(s)
- Cory Ebeling
- Pulmonary Research Group, Department of Pediatrics, University of Alberta, Edmonton, AB, Canada
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Efficacy and Safety of CVT-E002, a Proprietary Extract of Panax quinquefolius in the Prevention of Respiratory Infections in Influenza-Vaccinated Community-Dwelling Adults: A Multicenter, Randomized, Double-Blind, and Placebo-Controlled Trial. INFLUENZA RESEARCH AND TREATMENT 2011; 2011:759051. [PMID: 23074661 PMCID: PMC3447298 DOI: 10.1155/2011/759051] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/05/2011] [Revised: 05/16/2011] [Accepted: 05/19/2011] [Indexed: 11/24/2022]
Abstract
CVT-E002 (a proprietary extract) was found to be effective in the prevention of upper respiratory infections (URIs) in healthy adults, and institutionalized and community-dwelling seniors. A multicenter, randomized, double-blind, placebo-controlled trial was carried out to determine effects of CVT-E002 in the prevention of URIs in influenza-vaccinated community-dwelling adults. 783 community-dwelling adults were randomized to receive placebo, 400 mg or 800 mg treatment/d (1 : 1 : 1) for 6 months. Primary analysis on the incidence of laboratory-confirmed-clinical URIs (LCCUs), including influenza A and B, was performed on those receiving at least one dose. Secondary analysis was performed on study completers and included incidence, severity, and duration of URIs meeting a Jackson-based criteria and safety of CVT-E002. The incidence of LCCUs in the ITT group was 5.5%, 5.2%, and 4.6% in the placebo, 400 mg and 800 mg groups, respectively (P = 0.89). Jackson-confirmed URIs were significantly lower in the treated groups (P < 0.04). CVT-E002 supplementation reduced the severity and duration of Jackson-confirmed URIs. The results indicate that CVT-E002 can be safely used by similar groups and may prevent symptoms of URIs; larger sample size is warranted.
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Qi LW, Wang CZ, Yuan CS. Ginsenosides from American ginseng: chemical and pharmacological diversity. PHYTOCHEMISTRY 2011; 72:689-99. [PMID: 21396670 PMCID: PMC3103855 DOI: 10.1016/j.phytochem.2011.02.012] [Citation(s) in RCA: 264] [Impact Index Per Article: 20.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/03/2010] [Revised: 01/11/2011] [Accepted: 02/14/2011] [Indexed: 05/19/2023]
Abstract
Ginseng occupies a prominent position in the list of best-selling natural products in the world. Compared to the long history of use and widespread research on Asian ginseng, the study of American ginseng is relatively limited. In the past decade, some promising advances have been achieved in understanding the chemistry, pharmacology and structure-function relationship of American ginseng. To date, there is no systematic review of American ginseng. In this review, the different structures of the ginsenosides in American ginseng are described, including naturally occurring compounds and those resulting from steaming or biotransformation. Preclinical and clinical studies published in the past decade are also discussed. Highlighted are the chemical and pharmacological diversity and potential structural-activity relationship of ginsenosides. The goal is that this article is a useful reference to chemists and biologists researching American ginseng, and will open the door to agents in drug discovery.
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Affiliation(s)
- Lian-Wen Qi
- Tang Center for Herbal Medicine Research and Department of Anesthesia and Critical Care, The Pritzker School of Medicine, The University of Chicago, Chicago, IL 60637, USA.
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Ilarraza R, Wu Y, Davoine F, Ebeling C, Adamko DJ. Human dendritic cells promote an antiviral immune response when stimulated by CVT-E002. J Pharm Pharmacol 2011; 63:670-8. [DOI: 10.1111/j.2042-7158.2011.01257.x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Abstract
Objectives
There is interest in developing new compounds to enhance the immune response to airway virus infections. CVT-E002 is a patented ginseng extract shown to decrease symptoms of virus infection in clinical trials. We hypothesized that the mechanism for this antiviral effect could be through modulation of dendritic cells leading to enhanced T-cell activation.
Methods
Human monocyte-derived dendritic cells (moDC) exposed to CVT-E002 (or not) were co-cultured with autologous T cells, with or without virus (respiratory syncytial virus or parainfluenza virus). Effects of CVT-E002 on cell function were determined through flow cytometry, 5-bromo-2′-deoxyuridine (BrdU) incorporation and ELISA.
Key findings
moDC cultured with CVT-E002 or virus induced greater activation of T cells, as measured by CD25 expression and BrdU incorporation, compared with untreated moDC. Responding T cells were CD4+CD45RO+. Co-cultures of CVT-E002 treated moDC with T cells responded with increased release of Th1-type cytokines (interferon-gamma, tumour necrosis factor and interleukin-12). CVT-E002-treated moDC showed increased expression of CD83, CD80 and CD86. Lipopolysaccharide levels were not detected in CVT-E002 and antagonists for Toll-like receptor-4 did not inhibit CVT-E002-induced moDC maturation.
Conclusions
CVT-E002 induced moDC maturation, which caused increased memory T-cell activation and Th1-type cytokine response.
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Affiliation(s)
- Ramses Ilarraza
- Department of Pediatrics, University of Alberta, Pulmonary Research Group, Edmonton, AB, Canada
| | - Yingqi Wu
- Department of Pediatrics, University of Alberta, Pulmonary Research Group, Edmonton, AB, Canada
| | - Francis Davoine
- Campus Saint-Jean, University of Alberta, Pulmonary Research Group, Edmonton, AB, Canada
| | - Cory Ebeling
- Department of Pediatrics, University of Alberta, Pulmonary Research Group, Edmonton, AB, Canada
| | - Darryl J Adamko
- Department of Pediatrics, University of Alberta, Pulmonary Research Group, Edmonton, AB, Canada
- Department of Medicine, University of Alberta, Pulmonary Research Group, Edmonton, AB, Canada
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Mollah ML, Cheon YP, In JG, Yang DC, Kim YC, Song JC, Kim KS. Inhibitory Effects of Cultivated Wild Ginseng on the Differentiation of 3T3-L1 Pre-adipocytes. J Ginseng Res 2011. [DOI: 10.5142/jgr.2011.35.1.045] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
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Seida JK, Durec T, Kuhle S. North American (Panax quinquefolius) and Asian Ginseng (Panax ginseng) Preparations for Prevention of the Common Cold in Healthy Adults: A Systematic Review. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2011; 2011:282151. [PMID: 19592479 PMCID: PMC3136130 DOI: 10.1093/ecam/nep068] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/03/2008] [Accepted: 06/03/2009] [Indexed: 11/13/2022]
Abstract
Background: Standardized ginseng extract has become the best-selling cold and flu remedy in Canada, yet much controversy regarding the efficacy of ginseng in preventing common colds remains. Objective: To assess the efficacy of ginseng preparations for the prevention of common colds in healthy adults. Methods: Comprehensive bibliographic database, trial registry and grey literature searches were conducted up to December 2007. Randomized controlled trials or controlled clinical trials comparing North American (Panax quinquefolius) or Asian ginseng (Panax ginseng) root extract to placebo or no treatment in healthy adults were included. Two reviewers independently applied the study selection criteria and assessed methodological quality. Results: Five trials involving 747 participants were included. All five trials examined North American ginseng. The methodological quality of the trials varied widely. Ginseng preparations significantly reduced the total number of common colds by 25% compared to placebo (one trial; 95% CI: 5–45). There was a tendency toward a lower incidence of having at least one common cold or other acute respiratory infection (ARI) in the ginseng group compared to the placebo group (five trials; relative risk: 0.70; 95% CI: 0.48–1.02). Compared to placebo, ginseng significantly shortened the duration of colds or ARIs by 6.2 days (two trials; 95% CI: 3.4–9.0). Conclusions: There is insufficient evidence to conclude that ginseng reduces the incidence or severity of common colds. North American ginseng appears to be effective in shortening the duration of colds or ARIs in healthy adults when taken preventatively for durations of 8–16 weeks.
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Affiliation(s)
- Jennifer Krebs Seida
- School of Public Health, University of Alberta, 650 University Terrace, Edmonton, Alberta, Canada T6G 2T4
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Yakoot M, Salem A. Efficacy and safety of a multiherbal formula with vitamin C and zinc (Immumax) in the management of the common cold. Int J Gen Med 2011; 4:45-51. [PMID: 21403792 PMCID: PMC3048339 DOI: 10.2147/ijgm.s16266] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
OBJECTIVE To study the potential efficacy and tolerability of a natural multiherbal formula (Immumax) containing Echinacea extract 120 mg, garlic powder 100 mg, Nigella sativa oil 200 mg, and Panax ginseng extract 50 mg plus vitamin C 50 mg and elemental zinc 7.5 mg in the treatment of patients suffering from the common cold. DESIGN AND SETTING The study was conducted in a prospective, double-blind, randomized, controlled study design in an outpatient setting. PATIENTS AND METHODS Sixty-two eligible patients with symptoms of the common cold were randomized to either Immumax or placebo treatment groups for the duration of their symptoms or a maximum of 14 days. Resolution rates were estimated using Kaplan-Meier analysis, and resolution profiles were compared between groups using the log-rank test. The mean percentage change in total symptom severity scores at days 4 and 8 from baseline were compared between the two groups by one-way analysis of variance (ANOVA). RESULTS The median (interquartile range) time to resolution of all symptoms was 8 (5-9) days in the placebo group and 4 (3-6) days in the Immumax group. The results of the log-rank test indicate that symptoms resolved significantly faster in the Immumax group than in the placebo group (P < 0.001). The mean percentage reduction in total symptom severity scores from baseline at days 4 and 8 was significantly greater in the Immumax group than in the placebo group by one-way ANOVA (P < 0.01). CONCLUSION We can conclude from our study that Immumax is helpful in reducing the duration and severity of common cold symptoms.
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Gadkariem E, Al-Ashban R, Babikir L, Al-Joher H. Toxicity Study of Korean Ginseng Herbal medicine. ACTA ACUST UNITED AC 2010. [DOI: 10.3923/rjpharm.2010.86.90] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Beneficial effects of a combination of Korean red ginseng and highly active antiretroviral therapy in human immunodeficiency virus type 1-infected patients. CLINICAL AND VACCINE IMMUNOLOGY : CVI 2009; 16:1127-31. [PMID: 19535541 DOI: 10.1128/cvi.00013-09] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
To determine whether Korean red ginseng (KRG) has beneficial effects on human immunodeficiency virus type 1 (HIV-1)-infected patients administered highly active antiretroviral therapy (HAART), we analyzed the CD4 T-cell count, viral load, and resistance mutations to HAART in 46 individuals. Thirteen patients harbored resistance mutations at baseline. The study population was divided into two groups: specifically, a group treated with a combination of HAART plus KRG (23 patients) and a group treated with HAART alone (23 patients). The annual increase in CD4 T-cell count in the combination group was significantly higher than that in the group treated with HAART alone (P < 0.05). Overall, 21 patients harbored resistance mutations after 3 years of therapy. Following exclusion of 13 patients displaying baseline resistance mutations, 7.1% of patients (1/14) in the combination group and 42.1% (8/19) in the HAART group were identified with resistance mutations. One patient with baseline resistance mutations in the combination group did not display resistance mutations 3 years after HAART therapy. High-level resistance mutations were significantly lower in the combination group than in the group treated with HAART alone. Five patients showed no improvement in viral copy number (26.3% [5/19]) in the combination group and 9 (45.0% [9/20]) showed no improvement in the HAART-only group. Our data support the clinical utility of KRG intake during HAART therapy.
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Yan J, Engle VF, He Y, Jiao Y, Gu W. Study designs of randomized controlled trials not based on Chinese medicine theory are improper. Chin Med 2009; 4:3. [PMID: 19243625 PMCID: PMC2663767 DOI: 10.1186/1749-8546-4-3] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2006] [Accepted: 02/25/2009] [Indexed: 12/02/2022] Open
Abstract
Current biomedical research methods to evaluate the efficacy of Chinese medicine interventions are often conceptually incompatible with the theory and clinical practice of Chinese medicine. In this commentary, we (1) highlight the theory and principles underlying Chinese medicine clinical practice; (2) use ginseng as an example to describe clinical indications in Chinese medicine; (3) propose a framework guided by Chinese medicine theory for the evaluation of study designs in Chinese medicine research; and (4) evaluate 19 randomized, double-blind, placebo-controlled trials of ginseng. Our analysis indicates that all 19 trials with both positive and negative results confirm the specific effects of ginseng indicated by Chinese medicine theory. Study designs guided by Chinese medicine theory are necessary to validate and improve future randomized controlled clinical trials in Chinese medicine.
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Affiliation(s)
- Jian Yan
- Molecular Resource Center, University of Tennessee Health Science Center, Memphis, TN 38163, USA.
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Mollah ML, Kim GS, Moon HK, Chung SK, Cheon YP, Kim JK, Kim KS. Antiobesity effects of wild ginseng (Panax ginsengC.A. Meyer) mediated by PPAR-γ, GLUT4 and LPL in ob/ob mice. Phytother Res 2009; 23:220-5. [DOI: 10.1002/ptr.2593] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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Biondo PD, Robbins SJ, Walsh JD, McCargar LJ, Harber VJ, Field CJ. A randomized controlled crossover trial of the effect of ginseng consumption on the immune response to moderate exercise in healthy sedentary men. Appl Physiol Nutr Metab 2008; 33:966-75. [DOI: 10.1139/h08-080] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Ginseng is a popular herbal remedy that is reputed to increase resistance to stress and improve immune function. Regular exercise results in acute physiologic stress that affects the immune response. This study was conducted to investigate the effects of daily consumption of a standardized ginsenoside-containing North American ginseng (Panax quinquefolius) extract on immune function before, during, and after a moderate-exercise protocol in healthy sedentary men. Ten healthy males were randomized to receive either ginseng (1125 mg·d–1) or placebo for 35 days. After a 3 month washout period, subjects received the opposite treatment for another 35 days. An exercise test and blood collection were performed at the end of each treatment period. Immune parameters and blood hormone levels were measured before, during, and after the exercise stress protocol. Ginseng treatment reduced the peripheral blood concentration of CD8+ T cells and increased mitogen-stimulated T cell production of interleukin-2 ex vivo. Ginseng had no effect on total white blood cell counts; on concentrations of neutrophils, monocytes, or lymphocytes (CD3+, CD4+, CD16+, CD20+); on lymphocyte proliferation; or on neutrophil oxidative burst. Ginseng did not significantly affect exercise-induced changes in plasma concentrations of lactate, insulin, cortisol, or growth hormone. The consumption of ginseng for 5 weeks had a limited effect on the immune response to an acute exercise protocol.
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Affiliation(s)
- Patricia D. Biondo
- Alberta Institute for Human Nutrition, Department of Agricultural, Food and Nutritional Science, University of Alberta, 4-126A HRIF East, Edmonton, AB T6G 2P5, Canada
- Faculty of Physical Education and Recreation, University of Alberta, Edmonton, AB T6G 2H9, Canada
| | - Sarah J. Robbins
- Alberta Institute for Human Nutrition, Department of Agricultural, Food and Nutritional Science, University of Alberta, 4-126A HRIF East, Edmonton, AB T6G 2P5, Canada
- Faculty of Physical Education and Recreation, University of Alberta, Edmonton, AB T6G 2H9, Canada
| | - Jennifer D. Walsh
- Alberta Institute for Human Nutrition, Department of Agricultural, Food and Nutritional Science, University of Alberta, 4-126A HRIF East, Edmonton, AB T6G 2P5, Canada
- Faculty of Physical Education and Recreation, University of Alberta, Edmonton, AB T6G 2H9, Canada
| | - Linda J. McCargar
- Alberta Institute for Human Nutrition, Department of Agricultural, Food and Nutritional Science, University of Alberta, 4-126A HRIF East, Edmonton, AB T6G 2P5, Canada
- Faculty of Physical Education and Recreation, University of Alberta, Edmonton, AB T6G 2H9, Canada
| | - Vicki J. Harber
- Alberta Institute for Human Nutrition, Department of Agricultural, Food and Nutritional Science, University of Alberta, 4-126A HRIF East, Edmonton, AB T6G 2P5, Canada
- Faculty of Physical Education and Recreation, University of Alberta, Edmonton, AB T6G 2H9, Canada
| | - Catherine J. Field
- Alberta Institute for Human Nutrition, Department of Agricultural, Food and Nutritional Science, University of Alberta, 4-126A HRIF East, Edmonton, AB T6G 2P5, Canada
- Faculty of Physical Education and Recreation, University of Alberta, Edmonton, AB T6G 2H9, Canada
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Vohra S, Johnston BC, Laycock KL, Midodzi WK, Dhunnoo I, Harris E, Baydala L. Safety and tolerability of North American ginseng extract in the treatment of pediatric upper respiratory tract infection: a phase II randomized, controlled trial of 2 dosing schedules. Pediatrics 2008; 122:e402-10. [PMID: 18676527 DOI: 10.1542/peds.2007-2186] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
BACKGROUND Upper respiratory tract infections are the most common childhood illness. Panax quinquefolius (American ginseng root extract) standardized to contain 80% poly-furanosyl-pyranosyl-saccharides is purported to be effective in adult upper respiratory tract infection but has not been evaluated yet in a pediatric population. OBJECTIVES Our primary objective was to document the safety and tolerability of 2 weight-based dosing schedules (standard dose versus low dose versus placebo) in children. We also used the Canadian Acute Respiratory Infection Flu Scale, a quantitative scoring sheet for measuring the severity and duration of upper respiratory symptoms, to establish the SD of the treatment effect to allow sample-size calculations for future clinical trials. METHODS We conducted a randomized, double-blind dose-finding 3-arm trial (2 dosing schedules of American ginseng extract with 1 placebo control) during the winter months (November 2005 to March 2006) in children 3 to 12 years of age. RESULTS Seventy-five subjects were prerecruited from the general population in Edmonton. Of these, 46 subjects developed an upper respiratory tract infection and were randomly assigned (15 standard dose, 16 low dose, and 15 placebo), with 1 subject withdrawing from the low-dose arm before beginning the intervention. No serious adverse events were reported. The frequency, severity, and degree of association between the intervention and reported adverse events were not significantly different among each of the 3 treatment arms. CONCLUSIONS Standard doses of ginseng were well tolerated and merit additional evaluation with regard to treatment of pediatric upper respiratory tract infection.
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Affiliation(s)
- Sunita Vohra
- Complementary and Alternative Research and Education (CARE) Program, University of Alberta, Edmonton, Alberta, Canada
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