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Okonogi R, Thampanya V, Okonogi S. Efficacy of Andrographis paniculata spray in acute pharyngitis: A randomized controlled trial. Drug Discov Ther 2023; 17:340-345. [PMID: 37821383 DOI: 10.5582/ddt.2023.01053] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/13/2023]
Abstract
Acute viral pharyngitis is a self-limited disease but the symptoms, a sore throat in particular, can affect one's quality of life. Medicine for symptom relief is the main treatment. Recently, many studies have shown that Andrographis paniculata was efficacious in treating many diseases, including upper respiratory infections. However, adverse reactions to systemic intake are a concern. Therefore, A. paniculata spray is intended to reduce systemic adverse reactions and provide patients with more comfort as its local use. This randomized, double-blind study enrolled 60 adult patients with acute viral pharyngitis. All patients were asked to score the severity of symptoms including a sore throat, difficulty swallowing, and coughing using an 11-point numeric rating scale from 0 to 10. A physical examination was performed to score the severity of erythematous and swollen mucosa using a 0-3 score (0 = no, 1 = mild, 2 = moderate, and 3 = severe). The patients were randomized to receive treatment with either an A. paniculata spray or a positive control chamomile spray. Results revealed a significant reduction in the severity of all signs and symptoms in both groups (p < 0.05). The duration of treatment response in the A. paniculata spray group was 1.9 ± 0.7 days compared to 2.5 ± 1.2 days in the chamomile spray group (p = 0.049). No adverse events were noted in either group. A. paniculata spray is safe and highly efficacious in treating acute viral pharyngitis and can reduce symptoms more rapidly than a positive control spray.
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Affiliation(s)
- Risa Okonogi
- Department of Otorhinolaryngology, Chiang Rai Prachanukroh Hospital, Chiang Rai, Thailand
| | - Vich Thampanya
- Department of Internal Medicine, Chiang Rai Prachanukroh Hospital, Chiang Rai, Thailand
| | - Siriporn Okonogi
- Department of Pharmaceutical Sciences, Faculty of Pharmacy, Chiang Mai University, Chiang Mai, Thailand
- Center of Excellence in Pharmaceutical Nanotechnology, Chiang Mai University, Chiang Mai, Thailand
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Chen J, Li G, Sun C, Peng F, Yu L, Chen Y, Tan Y, Cao X, Tang Y, Xie X, Peng C. Chemistry, pharmacokinetics, pharmacological activities, and toxicity of Quercitrin. Phytother Res 2022; 36:1545-1575. [PMID: 35253930 DOI: 10.1002/ptr.7397] [Citation(s) in RCA: 33] [Impact Index Per Article: 16.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2021] [Revised: 01/07/2022] [Accepted: 01/10/2022] [Indexed: 12/20/2022]
Abstract
Quercitrin is a naturally available type of flavonoid that commonly functions as the dietary ingredient and supplement. So far, a wide spectrum of bioactivities of quercitrin have been revealed, including antioxidative stress, antiinflammation, anti-microorganisms, immunomodulation, analgesia, wound healing, and vasodilation. Based on these various pharmacological activities, increasing studies have focused on the potency of quercitrin in diverse diseases in recent years, such as bone metabolic diseases, gastrointestinal diseases, cardiovascular and cerebrovascular diseases, and others. In this paper, by collecting and summarizing publications from the recent years, the natural sources, pharmacological activities and roles in various diseases, pharmacokinetics, structure-activity relationship, as well as the toxicity of quercitrin were systematically reviewed. In addition, the underlying molecular mechanisms of quercitrin in treating related diseases, the dose-effect relationships, and the novel preparations were discussed on the purpose of broadening the application prospect of quercitrin as functional food and providing reference for its clinical application. Notably, clinical studies of quercitrin are insufficient at present, further high-quality studies are needed to firmly establish the clinical efficacy of quercitrin.
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Affiliation(s)
- Junren Chen
- Key Laboratory of Southwestern Chinese Medicine Resources, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Gangmin Li
- Key Laboratory of Southwestern Chinese Medicine Resources, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Chen Sun
- Key Laboratory of Southwestern Chinese Medicine Resources, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Fu Peng
- Key Laboratory of Southwestern Chinese Medicine Resources, Chengdu University of Traditional Chinese Medicine, Chengdu, China.,Department of Pharmacology, Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu, China
| | - Lei Yu
- Key Laboratory of Southwestern Chinese Medicine Resources, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Yan Chen
- Key Laboratory of Southwestern Chinese Medicine Resources, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Yuzhu Tan
- Key Laboratory of Southwestern Chinese Medicine Resources, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Xiaoyu Cao
- Key Laboratory of Southwestern Chinese Medicine Resources, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Yunli Tang
- Key Laboratory of Southwestern Chinese Medicine Resources, Chengdu University of Traditional Chinese Medicine, Chengdu, China.,Department of Pharmacology, Guangxi University of Traditional Chinese Medicine, Guangxi, China
| | - Xiaofang Xie
- Key Laboratory of Southwestern Chinese Medicine Resources, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Cheng Peng
- Key Laboratory of Southwestern Chinese Medicine Resources, Chengdu University of Traditional Chinese Medicine, Chengdu, China
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Sharma P, Shanavas A. Natural derivatives with dual binding potential against SARS-CoV-2 main protease and human ACE2 possess low oral bioavailability: a brief computational analysis. J Biomol Struct Dyn 2020; 39:5819-5830. [PMID: 32691697 PMCID: PMC7441762 DOI: 10.1080/07391102.2020.1794970] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
The world is witnessing severe health meltdown due to COVID-19. Generic antiviral drug remdesivir has been found to reduce time to clinical recovery but with insignificant clinical benefits and the antimalarial drug, hydroxychloroquine has been red flagged by USFDA for use as a prophylactic measure due to its cardiotoxicity. There is an acute requirement for a drug candidate that has significant clinical benefit with minimal to no side effects. With restricted access to wet laboratory techniques, an alternative approach is to engage in computational screening of lead molecules that could inhibit SARS-CoV-2 at different stages of its infectious cycle. Several in silico studies on natural derivatives, especially that present in daily refreshments (tea and fruit juices), staple food (black rice, red onions, soy beans etc) and traditional medicines (extracts of herbs, leaves and flowers) have been identified as potential drug candidates that bind efficiently with the key viral proteins. However, oral bioavailability of these nutriments is considerably low due to either poor permeability or loss of structure and function due to digestion in the gastrointestinal tract. Here we discuss few natural secondary metabolites (Delphinidin 3,5-diglucoside, Scutellarein 7-glucoside, Avicularin and 3,5-Di-O-galloylshikimic acid) that showed encouraging binding affinity against coronavirus main protease (Mpro) and human ACE2 receptor with MM-GBSA energies up to −74.0 Kcal/mol and −79.5 Kcal/mol, respectively. However, their Abbott bioavailability score (ABS) of 0.11 or 0.17 predicts poor oral bioavailability. This study could trigger interest to engineer potential natural products in managing present or future pandemics. Communicated by Ramaswamy H. Sarma
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Affiliation(s)
- Priyanka Sharma
- Inorganic & Organic Nanomedicine Lab, Institute of Nano Science and Technology, Mohali, Punjab, India
| | - Asifkhan Shanavas
- Inorganic & Organic Nanomedicine Lab, Institute of Nano Science and Technology, Mohali, Punjab, India
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Phumat P, Khongkhunthian S, Wanachantararak P, Okonogi S. Comparative inhibitory effects of 4-allylpyrocatechol isolated from Piper betle on Streptococcus intermedius, Streptococcus mutans, and Candida albicans. Arch Oral Biol 2020; 113:104690. [PMID: 32155466 DOI: 10.1016/j.archoralbio.2020.104690] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2019] [Revised: 02/14/2020] [Accepted: 03/02/2020] [Indexed: 10/24/2022]
Abstract
Streptococcus intermedius, Streptococcus mutans, and Candida albicans are harmful oral pathogens and prone to resist chemical antimicrobial agents. Active ingredients from plants are of increasing interest as an alternative. This study aims to compare antimicrobial effects of 4-allylpyrocatechol (APC) extracted from Piper betle on these oral pathogens. Minimum concentration of APC against the tested pathogens was determined using a broth microdilution assay. Killing kinetic study of APC was carried out within 24 h. Morphology of the pathogenic cells was assessed using scanning electron microscopy (SEM). Anti-biofilm was investigated using crystal violet assay and confocal laser scanning microscopy (CLSM). The results showed that the mechanism of inhibition of APC was bactericidal and fungicidal effects. APC at minimum concentration of 400 μg/mL could completely kill Streptococcus and Candida spp., however, the killing rate on S. intermedius and C. albicans was significantly faster than on S. mutans. APC inhibited biofilm formation of C. albicans more efficiently than that of the bacterial cells. Cell morphology from SEM indicated that APC caused bacterial cell membrane destruction and inhibited fungal budding or tubing formation. CLSM images confirmed the killing potential of APC and suggested that bacterial dead cells could be easier washed out than the fungal dead cells. It is concluded that APC potentially inhibits growth and biofilms of oral Streptococcus and Candida spp. in different mechanism of action and killing rate. APC can be considered as a promising agent for preventing and treating dental disorders caused by S. intermedius, S. mutans, and C. albicans.
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Affiliation(s)
- Pimpak Phumat
- Interdisciplinary Program in Nanoscience and Nanotechnology, Faculty of Science, Chiang Mai University, Chiang Mai, Thailand
| | - Sakornrat Khongkhunthian
- Department of Restorative Dentistry and Periodontology, Faculty of Dentistry, Chiang Mai University, Chiang Mai, Thailand; Research Center of Pharmaceutical Nanotechnology, Chiang Mai University, Chiang Mai, Thailand
| | | | - Siriporn Okonogi
- Department of Pharmaceutical Sciences, Faculty of Pharmacy, Chiang Mai University, Chiang Mai, Thailand; Research Center of Pharmaceutical Nanotechnology, Chiang Mai University, Chiang Mai, Thailand.
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