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Camellia sinensis

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https://www.readbyqxmd.com/read/28641467/green-tea-polyphenol-egcg-causes-anti-cancerous-epigenetic-modulations-in-acute-promyelocytic-leukemia-cells
#1
Veronika Borutinskaitė, Aida Virkšaitė, Giedrė Gudelytė, Rūta Navakauskienė
Green tea (Camellia sinensis) catechin epigallocatechin-3-gallate (EGCG) has been shown to possess diverse anti-cancerous properties. We demonstrated EGCG ability to inhibit acute promyelocytic leukemia (APL) cell proliferation and cause apoptosis. In addition, quantitative real-time polymerase chain reaction (RT-qPCR) analysis revealed elevated expression of genes associated with cell cycle arrest and differentiation (p27, PCAF, C/EBPα, and C/EBPɛ). Furthermore, EGCG caused anti-cancerous epigenetic changes: downregulation of epigenetic modifiers DNMT1, HDAC1, HDAC2, and G9a was observed by RT-qPCR analysis...
June 22, 2017: Leukemia & Lymphoma
https://www.readbyqxmd.com/read/28639055/effects-of-kaolin-m-99-099-application-on-antioxidant-and-phenolic-compounds-in-tea-leaves-camellia-sinensis-l-o-kuntze
#2
Keziban Yazici, Burcu Goksu
In this study, the effects of kaolin (M-99-099) applications on the total phenolic and antioxidant contents of tea leaves (Camellia sinensis (L.) O. Kuntze) harvested in three different periods were investigated. For this purpose, four different strategies including standard fertilizer application (T), 3% kaolin+standard fertilizer application (Ka1), 6% kaolin+standard fertilizer application (Ka2), and control (C) (nothing applied) were used to compare the effects of these strategies on total phenolic content, FRAP values, and DPPH radical scavenging capacities of tea leaves...
June 21, 2017: Biochemical Genetics
https://www.readbyqxmd.com/read/28638865/some-engineering-properties-of-shelled-and-kernel-tea-camellia-sinensis-seeds
#3
Ebubekir Altuntas, Merve Yildiz
BACKGROUND: Camellia sinensis is the source of tea leaves and it is an economic crop now grown around the World. Tea seed oil has been used for cooking in China and other Asian countries for more than a thousand years. Tea is the most widely consumed beverages after water in the world. It is mainly produced in Asia, central Africa, and exported throughout the World. Some engineering properties (size dimensions, sphericity, volume, bulk and true densities, friction coefficient, colour characteristics and mechanical behaviour as rupture force of shelled and kernel tea (Camellia sinensis) seeds were determined in this study...
2017: African Journal of Traditional, Complementary, and Alternative Medicines: AJTCAM
https://www.readbyqxmd.com/read/28625892/consumers-acceptance-of-medicinal-herbs-an-application-of-the-technology-acceptance-model-tam
#4
Nargesh Khatun Jokar, Seyyed Ali Noorhosseini, Mohammad Sadegh Allahyari, Christos A Damalas
ETHNOPHARMACOLOGICAL RELEVANCE: The shift in consumers' preferences from synthetic to 'natural' products has led to a resurgence of interest in medicinal plants, particularly in developing countries. However, research data about consumers' preferences for particular products is hard to find. AIMS AND OBJECTIVES: The main objective of this study was to contribute to the general understanding of consumers' intention for selecting medicinal herbs for consumption. MATERIALS AND METHODS: Factors underpinning consumers' acceptance of medicinal herbs were studied with the technology acceptance model (TAM) in Rasht City of Iran using a structured questionnaire...
June 15, 2017: Journal of Ethnopharmacology
https://www.readbyqxmd.com/read/28620637/evaluation-of-the-effects-of-three-plant-species-myrtus-communis-l-camellia-sinensis-l-zataria-multiflora-boiss-on-the-healing-process-of-intraoral-ulcers-in-rats
#5
Maryam Alsadat Hashemipour, Sodabeh Lotfi, Molok Torabi, Fariba Sharifi, Mehdi Ansari, Amirreza Ghassemi, Saied Sheikhshoaie
STATEMENT OF THE PROBLEM: Use of traditional medicine to relieve human sufferings has a very long history. The effects of these plants in wound curing and subsequently making the best mucosa patch for treatment of oral ulcers is still under investigation. PURPOSE: The main goal of present research work is to assess the efficacy of Myrtus communis L., Camellia sinensis L. and Zataria multiflora Boiss. on oral ulcer recovery process in rats. MATERIALS AND METHOD: In this study, 60 healthy adult male rats in 5 groups were investigated...
June 2017: Journal of Dentistry
https://www.readbyqxmd.com/read/28609448/%C3%AE-copaene-is-an-attractant-synergistic-with-quercivorol-for-improved-detection-of-euwallacea-nr-fornicatus-coleoptera-curculionidae-scolytinae
#6
Paul E Kendra, David Owens, Wayne S Montgomery, Teresa I Narvaez, Gary R Bauchan, Elena Q Schnell, Nurhayat Tabanca, Daniel Carrillo
The tea shot-hole borer, Euwallacea fornicatus Eichhoff, is an ambrosia beetle endemic to Asia and a pest of commercial tea, Camellia sinensis (L.) Kuntze. Recently, a complex of species morphologically similar to E. fornicatus has been recognized, which includes new pests established in Israel and the USA, both in California and Florida. Collectively termed E. nr. fornicatus, these cryptic species carry symbiotic Fusarium spp. fungi, some of which cause dieback disease in susceptible hosts, which include avocado, Persea americana Miller...
2017: PloS One
https://www.readbyqxmd.com/read/28605974/hplc-method-for-measurement-of-human-salivary-%C3%AE-amylase-inhibition-by-aqueous-plant-extracts
#7
István Takács, Ákos Takács, Anikó Pósa, Gyöngyi Gyémánt
Control of hyperglycemia is an important treatment in metabolic disorders such as type II diabetes and obesity. α-Amylase, as the first enzyme of glucose release from dietary polysaccharides, is a potential target to identify new sources of novel anti-obesity and anti-diabetic drugs. In this work, different herbal extracts as α-amylase inhibitors were studied by measuring the rate of the cleavage of a maltooligomer substrate 2-chloro-4-nitrophenyl-β-D-maltoheptoside. Measurement of chromophore containing products after reversed phase HPLC separation was used for α-amylase activity measurement...
June 2017: Acta Biologica Hungarica
https://www.readbyqxmd.com/read/28603626/physiologically-based-pharmacokinetic-modeling-of-tea-catechin-mixture-in-rats-and-humans
#8
Francis C P Law, Meicun Yao, Hui-Chang Bi, Stephen Lam
Although green tea (Camellia sinensis) (GT) contains a large number of polyphenolic compounds with anti-oxidative and anti-proliferative activities, little is known of the pharmacokinetics and tissue dose of tea catechins (TCs) as a chemical mixture in humans. The objectives of this study were to develop and validate a physiologically based pharmacokinetic (PBPK) model of tea catechin mixture (TCM) in rats and humans, and to predict an integrated or total concentration of TCM in the plasma of humans after consuming GT or Polyphenon E (PE)...
June 2017: Pharmacology Research & Perspectives
https://www.readbyqxmd.com/read/28599249/important-medicinal-herbs-in-parkinson-s-disease-pharmacotherapy
#9
REVIEW
Saurabh Srivastav, Mahino Fatima, Amal Chandra Mondal
Parkinson's disease (PD) is the most common progressive neurodegenerative movement disorder affecting more than 10 million people worldwide. The characteristic hallmark of PD involves progressive loss of dopaminergic (DA-ergic) neuron in Substantia Nigra pars compacta (SNpc) region of the brain, however, aetiology of the disease still remains unclear. Mitochondrial dysfunction and oxidative insult are considered to be the key culprit. The current therapy available for PD primarily relies on Levodopa that offers the potential of slowing down disease progression to some extent but includes lot of side effects...
June 6, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28597442/effects-of-adjacent-land-use-types-on-the-distribution-of-soil-organic-carbon-stocks-in-the-montane-area-of-central-taiwan
#10
Chiou-Pin Chen, Kai-Wei Juang, Chih-Hsin Cheng, Chuang-Wen Pai
BACKGROUND: Soil organic carbon (SOC) stocks can be altered through reforestation and cropping. We estimated the effects of land use on SOC stocks after natural deciduous forests replaced by crops and coniferous plantations by examining the vertical distribution of SOC stocks at different depth intervals in an adjacent Oolong tea (Camellia sinensis L.) plantation, Moso bamboo (Phyllostachys pubescens) forest, Japanese cedar (Cryptomeria japonica) forest, and Taiwania (Taiwania cryptomerioides) forest in central Taiwan...
December 2016: Botanical Studies (Taipei, Taiwan)
https://www.readbyqxmd.com/read/28597441/accumulation-of-catechins-and-expression-of-catechin-synthetic-genes-in-camellia-sinensis-at-different-developmental-stages
#11
Li-Qun Zhang, Kang Wei, Hao Cheng, Li-Yuan Wang, Cheng-Cai Zhang
BACKGROUND: Catechins are the main polyphenol compounds in tea (Camellia sinensis). To understand the relationship between gene expression and product accumulation, the levels of catechins and relative expressions of key genes in tea leaves of different developmental stages were analyzed. RESULTS: The amounts of catechins differed significantly in leaves of different stages, except for gallocatechin gallate. Close correlations between the expression of synthesis genes and the accumulation of catechins were identified...
December 2016: Botanical Studies (Taipei, Taiwan)
https://www.readbyqxmd.com/read/28596773/molecular-link-between-leaf-coloration-and-gene-expression-of-flavonoid-and-carotenoid-biosynthesis-in-camellia-sinensis-cultivar-huangjinya
#12
Lubin Song, Qingping Ma, Zhongwei Zou, Kang Sun, Yuantao Yao, Jihan Tao, Najeeb A Kaleri, Xinghui Li
'Huangjinya' is an excellent albino tea germplasm cultivated in China because of its bright color and high amino acid content. It is light sensitive, with yellow leaves under intense light while green leaves under weak light. As well, the flavonoid and carotenoid levels increased after moderate shading treatment. However, the mechanism underlying this interesting phenomenon remains unclear. In this study, the transcriptome of 'Huangjinya' plants exposed to sunlight and shade were analyzed by high-throughput sequencing followed by de novo assembly...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28593720/phytoestrogen-rich-natural-preparation-for-treatment-of-climacteric-syndrome-and-atherosclerosis-prevention-in-perimenopausal-women
#13
T V Kirichenko, V A Myasoedova, V A Orekhova, A L Ravani, N A Nikitina, A V Grechko, I A Sobenin, A N Orekhov
The present study evaluated the risks and benefits of phytoestrogen treatment in healthy perimenopausal women in relation to the dynamics of climacteric syndrome and progression of atherosclerosis. Study participants were treated with placebo or phytoestrogen-rich natural preparation Karinat based on grape (Vitis vinifera) seeds, green tea (Camellia sinensis) leaves, hop (Hunulus lupulus) cone powder and garlic (Allium sativum) powder. The dynamics of climacteric syndrome was evaluated by Kupperman Index and Utian Quality of Life Scale...
June 8, 2017: Phytotherapy Research: PTR
https://www.readbyqxmd.com/read/28588748/camellia-sinensis-prevents-perinatal-nicotine-induced-neurobehavioral-alterations-tissue-injury-and-oxidative-stress-in-male-and-female-mice-newborns
#14
Jamaan S Ajarem, Gadh Al-Basher, Ahmed A Allam, Ayman M Mahmoud
Nicotine exposure during pregnancy induces oxidative stress and leads to behavioral alterations in early childhood and young adulthood. The current study aimed to investigate the possible protective effects of green tea (Camellia sinensis) against perinatal nicotine-induced behavioral alterations and oxidative stress in mice newborns. Pregnant mice received 50 mg/kg C. sinensis on gestational day 1 (PD1) to postnatal day 15 (D15) and were subcutaneously injected with 0.25 mg/kg nicotine from PD12 to D15...
2017: Oxidative Medicine and Cellular Longevity
https://www.readbyqxmd.com/read/28586744/protective-effects-of-green-tea-on-olanzapine-induced-metabolic-syndrome-in-rats
#15
Bibi Marjan Razavi, Fariba Lookian, Hossein Hosseinzadeh
Atypical antipsychotics particularly olanzapine are associated with obesity and serious metabolic disturbances. As green tea (Camellia sinensis) is generally associated with beneficial effects on obesity and other metabolic disturbances, this study was undertaken to evaluate the effect of green tea aqueous extract (GTAE) on olanzapine induced weight gain and metabolic abnormalities in rats. Male Wistar rats were divided into eight groups: control, olanzapine (5mg/kg/day, IP.), GTAE (25, 50 and 100mg/kg/day, IP...
August 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28585735/a-randomized-double-blind-placebo-controlled-clinical-trial-examining-the-effects-of-green-tea-extract-on-systemic-lupus-erythematosus-disease-activity-and-quality-of-life
#16
Z Shamekhi, R Amani, Z Habibagahi, F Namjoyan, Ata Ghadiri, A Saki Malehi
Antiinflammatory and immunomodulatory benefit of green tea (Camellia sinensis) in autoimmune disease has been proven in recent studies. The objective of this study was to assess the effects of green tea on disease activity and quality of life in systemic lupus erythematosus patients. A randomized controlled trial on subjects with lupus was conducted, and 68 patients in the age range of 39.1 ± 10.3 years and body mass index of 25.7 ± 5.21 kg/m(2) completed the 12-week study. Patients were randomly divided into two groups of intervention (1000 mg green tea extract, two capsules/day) and control (1000 mg of starch, two capsules/day)...
June 6, 2017: Phytotherapy Research: PTR
https://www.readbyqxmd.com/read/28585285/the-synergistic-potential-of-various-teas-herbs-and-therapeutic-drugs-in-health-improvement-a-review
#17
REVIEW
F Malongane, L J McGaw, F N Mudau
Tea is one of the most widely consumed non-alcoholic beverages in the world next to water. It is classified as Camellia sinensis and non-Camellia sinensis (herbal teas). The common bioactive compounds found mainly in green teas are flavan-3-ols (catechins) (also called flavanols), proanthocyanidins (tannins) and flavonols. Black tea contains theaflavins and thearubigins and white tea contains L-theanine and gamma-aminobutyric acid (GABA), while herbal teas contain diverse polyphenols. Phytochemicals in tea exhibit anti-microbial, anti-diabetic and anti-cancer activities that are perceived to be helpful in managing chronic diseases linked to lifestyle...
June 6, 2017: Journal of the Science of Food and Agriculture
https://www.readbyqxmd.com/read/28583266/a-case-of-green-tea-camellia-sinensis-imbibement-causing-possible-anaphylaxis
#18
Shan Shan Wu, John A Johnson, Brian Peppers, Haig Tcheurekdjian, Robert Hostoffer
No abstract text is available yet for this article.
June 2017: Annals of Allergy, Asthma & Immunology
https://www.readbyqxmd.com/read/28577180/olivibacter-flavus-sp-nov-a-novel-endophytic-bacterium-isolated-from-the-root-of-camellia-sinensis
#19
Lei Tian, Tong-Wei Guan, Ling-Ling Yang, Kai-Yang Lu, Bing-Bing Liu, Wei-Xun ChunYu, Min Yin, En-Yuan Li, Yang Ji, Xiao-Ping Zhang, Shu-Kun Tang
A novel Gram-negative rod, endophytic bacterium, designated strain TMCC 8258(T), was isolated from the root of Camellia sinensis collected from Puer, south-west China. Comparative 16S rRNA gene sequence analysis showed that the strain belongs to the family Sphingobacteriaceae and a neighbour-joining phylogenetic tree suggested that strain TMCC 8258(T) formed a cluster with the type strain of Olivibacter ginsengisoli (showed the highest 16S rRNA gene sequence similarity of 95.8%). Chemotaxonomic data [major fatty acid iso-C15:0, summed feature 3 (C16:1 ω7c and/or C16:1 ω6c), iso-C17:0 3-OH and major respiratory quinone MK-7] confirmed the affiliation of strain TMCC 8258(T) to the genus Olivibacter...
June 2, 2017: Archives of Microbiology
https://www.readbyqxmd.com/read/28575803/paradigm-shift-of-contamination-risk-of-six-heavy-metals-in-tea-camellia-sinensis-l-growing-soil-a-new-approach-influenced-by-inorganic-and-organic-amendments
#20
Tanmoy Karak, Krishnamoni Bora, Ranjit Kumar Paul, Sampa Das, Puja Khare, Amrit Kumar Dutta, Romesh Kumar Boruah
The present study provides several contamination and ecological risk indices for selected metals (Cd, Cr, Cu, Mn, Ni and Zn) in tea (Camellia sinensis L.; cv. S.3A/3) growing soil influenced by lower to higher doses of inorganic and organic amendments. While ecological risk indices were applied, it was observed that same treatment showed different risk levels but contamination risk status did not vary significantly. All the indices showed significant correlation with heavy metals' concentration in young shoots of tea plants...
May 22, 2017: Journal of Hazardous Materials
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