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https://www.readbyqxmd.com/read/29332344/in-vitro-antitumor-activity-of-guttiferone-a-in-human-breast-cancer-cells-is-mediated-via-apoptosis-mitochondrial-mediated-oxidative-stress-and-reactive-oxygen-species-production
#1
Hai-Ming Wu, Yu-Mei Li
PURPOSE: Breast cancer is the second most frequently diagnosed cancer and is considered as the main cause of cancer related death in females. It is estimated that about one-third of women with breast cancer develop metastases and eventually die of this disease. The main treatment options for breast cancer include surgical interventions followed by chemotherapy, hormonotherapy or radiation. However, the side effects associated with the treatment of breast cancer negatively affects the quality of patient's life...
November 2017: Journal of B.U.ON.: Official Journal of the Balkan Union of Oncology
https://www.readbyqxmd.com/read/29332293/measurement-of-cyclic-gmp-during-plant-hypersensitive-disease-resistance-response
#2
Jian Chen, Diana Bellin, Elodie Vandelle
Cyclic guanosine-3',5'-monophosphate (cGMP) is recognized as an important second messenger in plants, mediating intracellular signal in important physiological processes, including the hypersensitive disease resistance response induced by avirulent pathogens. In this context, the analysis of cGMP levels in infected plants requires an accurate and specific detection method allowing its quantification. Here, we describe an assay based on the Alphascreen technology, developed for animal cells and further adapted and optimized for the detection of cGMP in plants...
2018: Methods in Molecular Biology
https://www.readbyqxmd.com/read/29332285/immunity-associated-programmed-cell-death-as-a-tool-for-the-identification-of-genes-essential-for-plant-innate-immunity
#3
Bangjun Zhou, Lirong Zeng
Plants have evolved a sophisticated innate immune system to contend with potential infection by various pathogens. Understanding and manipulation of key molecular mechanisms that plants use to defend against various pathogens are critical for developing novel strategies in plant disease control. In plants, resistance to attempted pathogen infection is often associated with hypersensitive response (HR), a form of rapid programmed cell death (PCD) at the site of attempted pathogen invasion. In this chapter, we describe a method for rapid identification of genes that are essential for plant innate immunity...
2018: Methods in Molecular Biology
https://www.readbyqxmd.com/read/29332281/programmed-cell-death-in-plants-an-overview
#4
Vittoria Locato, Laura De Gara
Programmed cell death (PCD) is a controlled mechanism that eliminates specific cells under developmental or environmental stimuli. All organisms-from bacteria to multicellular eukaryotes-have the ability to induce PCD in selected cells. Although this process was first identified in plants, the interest in deciphering the signaling pathways leading to PCD strongly increased when evidence came to light that PCD may be involved in several human diseases. In plants, PCD activation ensures the correct occurrence of growth and developmental processes, among which embryogenesis and differentiation of tracheary elements...
2018: Methods in Molecular Biology
https://www.readbyqxmd.com/read/29332042/protective-effects-of-indian-spice-curcumin-against-amyloid-%C3%AE-in-alzheimer-s-disease
#5
P Hemachandra Reddy, Maria Manczak, Xiangling Yin, Mary Catherine Grady, Andrew Mitchell, Sahil Tonk, Chandra Sekhar Kuruva, Jasvinder Singh Bhatti, Ramesh Kandimalla, Murali Vijayan, Subodh Kumar, Rui Wang, Jangampalli Adi Pradeepkiran, Gilbert Ogunmokun, Kavya Thamarai, Kandi Quesada, Annette Boles, Arubala P Reddy
The purpose of our article is to assess the current understanding of Indian spice, curcumin, against amyloid-β (Aβ)-induced toxicity in Alzheimer's disease (AD) pathogenesis. Natural products, such as ginger, curcumin, and gingko biloba have been used as diets and dietary supplements to treat human diseases, including cancer, cardiovascular, respiratory, infectious, diabetes, obesity, metabolic syndromes, and neurological disorders. Products derived from plants are known to have protective effects, including anti-inflammatory, antioxidant, anti-arthritis, pro-healing, and boosting memory cognitive functions...
2018: Journal of Alzheimer's Disease: JAD
https://www.readbyqxmd.com/read/29331881/ameliorative-role-of-genistein-against-age-dependent-chronic-arsenic-toxicity-in-murine-brains-via-the-regulation-of-oxidative-stress-and-inflammatory-signaling-cascades
#6
Sukanya Saha, Pritam Sadhukhan, Sushweta Mahalanobish, Sayanta Dutta, Parames C Sil
Brain is highly prone to oxidative damage due to its huge lipid content and extensive energy requirements. Exogenous insult in brain via oxidative injury can lead to severe pathophysiological conditions. Age-dependent deterioration of normal brain functions is also noteworthy. Genistein, a polyphenolic isoflavonoid, obtained from the soy plant, is well known to protect against several diseased conditions. Here, in this study chronic brain toxicity model was developed using oral administration of arsenic for 90 days in adult and aged murines...
December 12, 2017: Journal of Nutritional Biochemistry
https://www.readbyqxmd.com/read/29331816/new-robust-sensitive-fluorescence-spectroscopy-coupled-with-plsr-for-estimation-of-quercetin-in-ziziphus-mucronata-and-ziziphus-sativa
#7
Javid Hussain, Fazal Mabood, Ahmed Al-Harrasi, Liaqat Ali, Tania Shamim Rizvi, Farah Jabeen, Syed Abdullah Gilani, Shehla Shinwari, Mushtaq Ahmad, Zahra Khalfan Alabri, Said Hamood Salim Al Ghawi
Flavonoids are natural antioxidants derived from plants and commonly found in a variety of foods to sequester free radicals. Quercetin, belonging to flavonol subclass of flavonoids, has received considerable attention because of its wide uses as a nutritional supplement as well as a phytochemical remedy for a number of diseases. In the current study, quantification of quercetin was carried out in two medicinally important flavonoid rich plant Ziziphus mucronata and Ziziphus sativa. Emission spectroscopy was utilized as a new method coupled with Partial Least Squares Regression (PLSR) and the cross validation was done by UV-Visible spectroscopy...
January 6, 2018: Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy
https://www.readbyqxmd.com/read/29331375/xanthomonas-tal-effectors-hijack-host-basal-transcription-factor-iia-%C3%AE-and-%C3%AE-subunits-for-invasion
#8
Ling Ma, Qiang Wang, Meng Yuan, Tingting Zou, Ping Yin, Shiping Wang
The Xanthomonas genus includes Gram-negative plant-pathogenic bacteria, which infect a broad range of crops and wild plant species, cause symptoms with leaf blights, streaks, spots, stripes, necrosis, wilt, cankers and gummosis on leaves, stems and fruits in a wide variety of plants via injecting their effector proteins into the host cell during infection. Among these virulent effectors, transcription activator-like effectors (TALEs) interact with the γ subunit of host transcription factor IIA (TFIIAγ) to activate the transcription of host disease susceptibility genes...
January 10, 2018: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/29331315/ethnobotany-phytochemistry-and-pharmacology-of-arctotis-arctotoides-l-f-o-hoffm-a-review
#9
REVIEW
Md Moshfekus Saleh-E-In, Johannes Van Staden
ETHNOPHARMACOLOGICAL RELEVANCE: Arctotis arctotoides (Asteraceae) is part of the genus Arctotis. Arctotis is an African genus of approximately 70 species that occur widely in the African continent with diverse medicinal values. This plant is used for the treatment of indigestion and catarrh of the stomach, epilepsy, topical wounds and skin disorders among the ethnic groups in South Africa and reported to have a wide spectrum of pharmacological properties. AIM OF THE REVIEW: The aim of the present review is to appraise the botany, traditional uses, phytochemistry, pharmacological potential, analytical methods and safety issues of A...
January 10, 2018: Journal of Ethnopharmacology
https://www.readbyqxmd.com/read/29329783/comparative-genome-based-cis-elements-analysis-in-the-5-upstream-and-3-downstream-region-of-cell-wall-invertase-and-phenylalanine-ammonia-lyase-in-nicotiana-benthamiana
#10
S A Sheshadri, M J Nishanth, N Harita, P Brindha, S Bindu
Plant secondary metabolites are widely used in human disease treatment; though primary metabolism provides precursors for secondary metabolism, not much has been studied to unravel the link connecting both the processes. Most common form of gene regulation interconnecting diverse metabolism occurs at the transcriptional and/or posttranscriptional level mediated by regulatory cis-elements. The present study aims at understanding the common cis-elements network connecting the major primary metabolic enzyme, cell wall invertase (CWIN) and secondary metabolism genes in Nicotiana benthamiana (N...
November 13, 2017: Computational Biology and Chemistry
https://www.readbyqxmd.com/read/29329649/hppr-encodes-the-hydroxyphenylpyruvate-reductase-required-for-the-biosynthesis-of-hydrophilic-phenolic-acids-in-salvia-miltiorrhiza
#11
Guo-Quan Wang, Jun-Feng Chen, Bo Yi, He-Xin Tan, Lei Zhang, Wan-Sheng Chen
Salvia miltiorrhiza is a medicinal plant widely used in the treatment of cardiovascular and cerebrovascular diseases. Hydrophilic phenolic acids, including rosmarinic acid (RA) and lithospermic acid B (LAB), are its primary medicinal ingredients. However, the biosynthetic pathway of RA and LAB in S. miltiorrhiza is still poorly understood. In the present study, we accomplished the isolation and characterization of a novel S. miltiorrhiza Hydroxyphenylpyruvate reductase (HPPR) gene, SmHPPR, which plays an important role in the biosynthesis of RA...
December 2017: Chinese Journal of Natural Medicines
https://www.readbyqxmd.com/read/29329035/esterification-of-trans-aconitic-acid-improves-its-anti-inflammatory-activity-in-lps-induced-acute-arthritis
#12
Diego Pinto de Oliveira, Thales do Valle Moreira, Nathália Vieira Batista, José Dias de Souza Filho, Flávio Almeida Amaral, Mauro Martins Teixeira, Rodrigo Maia de Pádua, Fernão Castro Braga
trans-Aconitic acid (TAA) is an abundant constituent in the leaves of Echinodorus grandiflorus, a medicinal plant used to treat rheumatoid arthritis in Brazil. Esterification was explored as a strategy to increase lipophilicity and biopharmaceutical properties of TAA, a highly polar tricarboxylic acid. We herein report the synthesis of TAA esters via Fischer esterification with ethanol, n-butanol and n-octanol. The reaction kinetics was investigated to produce mono-, di- and tri- derivatives. Mono- and diesters of TAA were obtained as a mixture of positional isomers, whereas the triesters were recovered as pure compounds...
January 9, 2018: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/29328532/population-genomic-footprints-of-host-adaptation-introgression-and-recombination-in-coffee-leaf-rust
#13
Diogo Nuno Silva, Vítor Várzea, Octávio Salgueiro Paulo, Dora Batista
Coffee Leaf Rust, caused by Hemileia vastatrix (Hv), represents the biggest threat to coffee production worldwide and ranks amongst the most serious fungal diseases in history. Despite a recent series of outbreaks and emergence of hyper-virulent strains, the population evolutionary history and potential of this pathogen remains poorly understood. To address this issue, we used RADseq to generate ∼19,000 SNPs across a worldwide collection of 37 Hv samples. Contrarily to the longstanding idea that Hv represents a genetically unstructured and cosmopolitan species, our results reveal the existence of a cryptic species complex with marked host tropism...
January 12, 2018: Molecular Plant Pathology
https://www.readbyqxmd.com/read/29327412/partial-proteome-of-the-corynetoxin-producing-gram-positive-bacterium-rathayibacter-toxicus
#14
Christine M Fennessey, Michael B McMahon, Aaron Sechler, Jaclyn Kaiser, WesleyFixed The Affiliations M Garrett, Matthew A Tancos, Douglas G Luster, Elizabeth E Rogers, William L Schneider
Rathayibacter toxicus is a Gram-positive bacterium that is the causative agent of annual ryegrass toxicity (ARGT), a disease that causes devastating losses in the Australian livestock industry. R. toxicus exhibits a complex life cycle, using the nematode Anguina funesta as a physical vector to carry it up to the seed head of the host plant. ARGT is caused by a tunicamycin-like corynetoxin that is produced in R. toxicus-infected seed galls. We analyzed protein expression in R. toxicus under stationary growth phase conditions to obtain a more complete understanding of the biology of this organism and identify potential targets for immunoassay development...
January 12, 2018: Proteomics
https://www.readbyqxmd.com/read/29327329/microrna-mediated-r-gene-regulation-molecular-scabbards-for-double-edged-swords
#15
REVIEW
Yingtian Deng, Minglei Liu, Xiaofei Li, Feng Li
Plant resistance (R) proteins are immune receptors that recognize pathogen effectors and trigger rapid defense responses, namely effector-triggered immunity. R protein-mediated pathogen resistance is usually race specific. During plant-pathogen coevolution, plant genomes accumulated large numbers of R genes. Even though plant R genes provide important natural resources for breeding disease-resistant crops, their presence in the plant genome comes at a cost. Misregulation of R genes leads to developmental defects, such as stunted growth and reduced fertility...
January 9, 2018: Science China. Life Sciences
https://www.readbyqxmd.com/read/29325926/the-study-of-the-inhibitory-effect-of-calcium-oxalate-monohydrate-s-crystallization-by-two-medicinal-and-aromatic-plants-ammi-visnaga-and-punica-granatum
#16
R Kachkoul, T Sqalli Houssaini, Y Miyah, M Mohim, R El Habbani, A Lahrichi
INTRODUCTION: Urinary lithiasis is a recurrent disease defined by the presence of calculi in the urinary tract. Most urinary calculi have as a major component calcium oxalate which occurs mainly in two crystalline forms: Calcium oxalate monohydrate (whewellite) and calcium oxalate dihydrate (weddellite). The target behind, this work is to study the inhibiting effect of the calcium oxalate's crystallization by the extract of the Ammi visnaga and the Punica granatum. METHODS: The inhibition of crystallization has been studied in vitro with both the absence and the presence of the different concentrations of the extracts of the two plants...
January 8, 2018: Progrès en Urologie
https://www.readbyqxmd.com/read/29325042/biochemistry-of-complex-glycan-depolymerisation-by-the-human-gut-microbiota
#17
Didier Ndeh, Harry J Gilbert
The human gut microbiota (HGM) makes an important contribution to health and disease. It is a complex microbial community of trillions of microbes with a majority of its members represented within two phyla, the Bacteroidetes and Firmicutes, although it also contains species of Actinobacteria and Proteobacteria. Reflecting its importance, the HGM is sometimes referred to as an 'organ' as it performs functions analogous to systemic tissues within the human host. The major nutrients available to the HGM are host and dietary complex carbohydrates...
January 9, 2018: FEMS Microbiology Reviews
https://www.readbyqxmd.com/read/29324056/cardiopulmonary-effects-induced-by-occupational-exposure-to-titanium-dioxide-nanoparticles
#18
Lin Zhao, Yifang Zhu, Zhangjian Chen, Huadong Xu, Jingwen Zhou, Shichuan Tang, Zhizhen Xu, Fanling Kong, Xinwei Li, Yifei Zhang, Xianzuo Li, Ji Zhang, Guang Jia
Although some toxicological studies have reported that exposure to titanium dioxide nanoparticles (nano-TiO2) may elicit adverse cardiopulmonary effects, related data collected from human are currently limited. The purpose of this study is to explore cardiopulmonary effects among workers who were exposed to nano-TiO2 and to identify biomarkers associated with exposure. A cross-sectional study was conducted in a nano-TiO2 manufacturing plant in eastern China. Exposure assessment and characterization of TiO2 particles were performed in a packaging workshop...
January 11, 2018: Nanotoxicology
https://www.readbyqxmd.com/read/29323042/mitochondrial-protective-and-anti-apoptotic-effects-of-rhodiola-crenulata-extract-on-hippocampal-neurons-in-a-rat-model-of-alzheimer-s-disease
#19
Jun-Mei Wang, Ze-Qiang Qu, Jin-Lang Wu, Peter Chung, Yuan-Shan Zeng
In our previous study, we found that the edible alcohol extract of the root of the medicinal plant Rhodiola crenulata (RCE) improved spatial cognition in a rat model of Alzheimer's disease. Another study from our laboratory showed that RCE enhanced neural cell proliferation in the dentate gyrus of the hippocampus and prevented damage to hippocampal neurons in a rat model of chronic stress-induced depression. However, the mechanisms underlying the neuroprotective effects of RCE are unclear. In the present study, we investigated the anti-apoptotic effect of RCE and its neuroprotective mechanism of action in a rat model of Alzheimer's disease established by intracerebroventricular injection of streptozotocin...
December 2017: Neural Regeneration Research
https://www.readbyqxmd.com/read/29322929/ontology-based-systematic-representation-and-analysis-of-traditional-chinese-drugs-against-rheumatism
#20
Qingping Liu, Jiahao Wang, Yan Zhu, Yongqun He
BACKGROUND: Rheumatism represents any disease condition marked with inflammation and pain in the joints, muscles, or connective tissues. Many traditional Chinese drugs have been used for a long time to treat rheumatism. However, a comprehensive information source for these drugs is still missing, and their anti-rheumatism mechanisms remain unclear. An ontology for anti-rheumatism traditional Chinese drugs would strongly support the representation, analysis, and understanding of these drugs...
December 21, 2017: BMC Systems Biology
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