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https://www.readbyqxmd.com/read/28807161/phytochemical-modulation-of-apoptosis-and-autophagy-strategies-to-overcome-chemoresistance-in-leukemic-stem-cells-in-the-bone-marrow-microenvironment
#1
Helen C Owen, Sandra Appiah, Noor Hasan, Lucy Ghali, Ghada Elayat, Celia Bell
Advances in scientific research and targeted treatment regimes have improved survival rates for many cancers over the past few decades. However, for some types of leukemia, including acute lymphoblastic and acute myeloid leukemia, mortality rates have continued to rise, with chemoresistance in leukemic stem cells (LSCs) being a major contributing factor. Most cancer drug therapies act by inducing apoptosis in dividing cells but are ineffective in targeting quiescent LSCs. Niches in the bone marrow, known as leukemic niches, behave as "sanctuaries" where LSCs acquire drug resistance...
2017: International Review of Neurobiology
https://www.readbyqxmd.com/read/28802472/complementary-and-integrative-gastroenterology
#2
REVIEW
Joshua Korzenik, Anna K Koch, Jost Langhorst
Complementary and integrative medicine is developing within gastroenterology, expanding options particularly for inflammatory bowel disease, irritable bowel syndrome, and reflux esophagitis. This article encompasses new developments in complementary integrative medicine with an emphasis on herbal therapies. Studies of potential therapies have been advancing with increasing sophistication. The best studied with the most promising results in ulcerative colitis is the use of curcumin both for the induction and maintenance of remission...
September 2017: Medical Clinics of North America
https://www.readbyqxmd.com/read/28745768/the-sos-chromotest-applied-for-screening-plant-antigenotoxic-agents-against-ultraviolet-radiation
#3
J L Fuentes, A García Forero, N Quintero Ruiz, C A Prada Medina, N Rey Castellanos, D A Franco Niño, D A Contreras García, Y Córdoba Campo, E E Stashenko
In this work, we investigated the usefulness of the SOS Chromotest for screening plant antigenotoxic agents against ultraviolet radiation (UV). Fifty Colombian plant extracts obtained by supercritical fluid (CO2) extraction, twelve plant extract constituents (apigenin, carvacrol, β-caryophyllene, 1,8-cineole, citral, p-cymene, geraniol, naringenin, pinocembrin, quercetin, squalene, and thymol) and five standard antioxidant and/or photoprotective agents (curcumin, epigallocatechin gallate, resveratrol, α-tocopherol, and Trolox®) were evaluated for their genotoxicity and antigenotoxicity against UV using the SOS Chromotest...
July 26, 2017: Photochemical & Photobiological Sciences
https://www.readbyqxmd.com/read/28736128/the-effect-of-pro-nanolipospheres-pnl-formulation-containing-natural-absorption-enhancers-on-the-oral-bioavailability-of-delta-9-tetrahydrocannabinol-thc-and-cannabidiol-cbd-in-a-rat-model
#4
Irina Cherniakov, Dvora Izgelov, Abraham J Domb, Amnon Hoffman
The lipophilic phytocannabinoids cannabidiol (CBD) and Δ(9)-tetrahydrocannabinol (THC) show therapeutic efficacy in various medical conditions. Both molecules are poorly water soluble and subjected to extensive first pass metabolism in the gastrointestinal tract, leading to a limited oral bioavailability of approximately 9%. We have developed an advanced lipid based Self-Emulsifying Drug Delivery System termed Advanced Pro-NanoLiposphere (PNL) pre-concentrate. The PNL is composed of lipid and emulsifying excipients of GRAS status and are known to increase solubility and reduce Phase I metabolism of lipophilic active compounds...
July 20, 2017: European Journal of Pharmaceutical Sciences
https://www.readbyqxmd.com/read/28735008/trehalose-induced-structural-modulation-of-bovine-serum-albumin-at-ambient-temperature
#5
Ahana Das, Pijush Basak, Rudradip Pattanayak, Turban Kar, Rajib Majumder, Debadrita Pal, Anindita Bhattacharya, Maitree Bhattacharyya, Samudra Prosad Banik
Trehalose is a well-known protein stabilizing osmolyte. The present study has been designed to understand the interaction of trehalose with BSA at ambient temperature. Steady state fluorescence and life-time analysis along with CD, DLS and ITC have been employed to show that trehalose causes surface-associated structural perturbation of BSA to promote its compaction. Trehalose at 0.1M concentration resulted in increased solvent exposure of one of the two tryptophans of BSA with a 5nm redshift in emission and enhanced susceptibility to acrylamide quenching with an increase in KSV from 2...
July 19, 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/28734166/naturally-occurring-immunomodulators-with-antitumor-activity-an-insight-on-their-mechanisms-of-action
#6
REVIEW
Shimaa Ibrahim Abdelmonym Mohamed, Ibrahim Jantan, Md Areeful Haque
Natural products with immunomodulatory activity are widely used in treatment of many diseases including autoimmune diseases, inflammatory disorders in addition to cancer. They gained a great interest in the last decades as therapeutic agents since they provide inexpensive and less toxic products than the synthetic chemotherapeutic agents. Immunomodulators are the agents that have the ability to boost or suppress the host defense response that can be used as a prophylaxis as well as in combination with other therapeutic modalities...
July 19, 2017: International Immunopharmacology
https://www.readbyqxmd.com/read/28707601/potential-role-of-natural-compounds-as-anti-angiogenic-agents-in-cancer
#7
Muthu K Shanmugam, Sudha Warrier, Alan Prem Kumar, Gautam Sethi, Frank Arfuso
BACKGROUND: Neovascularization, also known as angiogenesis, is the process of capillary sprouting from pre-existing blood vessels. This physiological process is a hallmark event in normal embryonic development as blood vessels generally supply both oxygen and nutrients to the cells of the body. Any disruption in this process can lead to the development of various chronic diseases, including cancer. In cancer, aberrant angiogenesis plays a prominent role in maintaining sustained tumor growth to malignant phenotypes and promoting metastasis...
July 12, 2017: Current Vascular Pharmacology
https://www.readbyqxmd.com/read/28699506/natural-or-plant-products-for-the-treatment-of-neurological-disorders-current-knowledge
#8
Mohammad Khalid Parvez
In recent decades, complementary and alternative medicine (CAM) has become very popular in the treatment of several chronic diseases. Natural products as one of the CAM modalities offer potential opportunities to discover lead compounds for novel drug development. The use of CAM or natural products in the prevention of neurodegenerative diseases is comparatively a newer area. Natural therapeutics with anti-oxidative and anti-inflammatory salutations evidently plays a crucial role in protecting neurons. Of these, the most promising are caffeine, trigonelline, shogaol, curcumin, resveratrol, baicalein, wogonin, ginsenosides, tanshinones, withanolides, picrosides, parthenolide, cannabinoids, Devil's claw and white willow bark, including Chinese formulations Renshen Shouwu and Shengmai San...
July 10, 2017: Current Drug Metabolism
https://www.readbyqxmd.com/read/28694655/antioxidant-dietary-approach-in-treatment-of-fatty-liver-new-insights-and-updates
#9
REVIEW
Alessandra Ferramosca, Mariangela Di Giacomo, Vincenzo Zara
Non-alcoholic fatty liver disease (NAFLD) is a common clinicopathological condition, encompassing a range of conditions caused by lipid deposition within liver cells. To date, no approved drugs are available for the treatment of NAFLD, despite the fact that it represents a serious and growing clinical problem in the Western world. Identification of the molecular mechanisms leading to NAFLD-related fat accumulation, mitochondrial dysfunction and oxidative balance impairment facilitates the development of specific interventions aimed at preventing the progression of hepatic steatosis...
June 21, 2017: World Journal of Gastroenterology: WJG
https://www.readbyqxmd.com/read/28677733/sulforaphane-inhibits-the-interferon-%C3%AE-induced-expression-of-mig-ip-10-and-i-tac-in-ins%C3%A2-1-pancreatic-%C3%AE-cells-through-the-downregulation-of-irf-1-stat-1-and-pkb
#10
Yu-Kyoung Park, Mahesh Ramalingam, Shin Kim, Byeong-Churl Jang, Jong Wook Park
Sulforaphane (SFN) is a dietary isothiocyanate abundantly available in cruciferous vegetables and has been shown to possess anti-inflammatory and immunomodulatory activities. Chemokines are important mediators of inflammation and immune responses due to their ability to recruit and activate macrophages and leukocytes. To date, little is known about the SFN-mediated regulation of chemokine expression in pancreatic β-cells. In this study, we investigated the inhibitory effects and mechanisms of SFN on the interferon-γ (IFN-γ)-induced expression of a subset of chemokines, including monokine induced by IFN-γ (MIG), IFN-inducible protein of 10 kDa (IP-10) and IFN-inducible T‑cell alpha chemoattractant (I-TAC), in INS‑1 cells, a rat pancreatic β-cell line...
September 2017: International Journal of Molecular Medicine
https://www.readbyqxmd.com/read/28674526/induction-of-cryptic-and-bioactive-metabolites-through-natural-dietary-components-in-an-endophytic-fungus-colletotrichum-gloeosporioides-penz-sacc
#11
Vijay K Sharma, Jitendra Kumar, Dheeraj K Singh, Ashish Mishra, Satish K Verma, Surendra K Gond, Anuj Kumar, Namrata Singh, Ravindra N Kharwar
Grape skin and turmeric extracts having the major components resveratrol and curcumin, respectively, were used for the induction of cryptic and bioactive metabolites in an endophytic fungus Colletotrichum gloeosporioides isolated from Syzygium cumini. The increase in total amount of crude compounds in grape skin and turmeric extract treated cultures was 272.48 and 174.32%, respectively, compared to the untreated control. Among six human pathogenic bacteria tested, the maximum inhibitory activity was found against Aeromonas hydrophila IMS/GN11 while no inhibitory activity was observed against Enterococcus faecalis IMS/GN7...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28673607/nanoparticle-formulations-to-enhance-tumor-targeting-of-poorly-soluble-polyphenols-with-potential-anticancer-properties
#12
REVIEW
Maria Cristina Bonferoni, Silvia Rossi, Giuseppina Sandri, Franca Ferrari
Polyphenols have been extensively studied for their relevant anticancer activity. Quite often however their instability, extensive metabolization, low bioavailability and poor solubility limit their application in cancer prevention and therapy. Formulation in nanoparticles has been widely proposed as a means to overcome these limits, maximize localization and specific activity at tumor site. The present review is intended as an update of literature regarding nanoparticulate carriers aimed to deliver polyphenols to the cancer site...
June 30, 2017: Seminars in Cancer Biology
https://www.readbyqxmd.com/read/28623709/the-mechanism-of-neuroprotective-action-of-natural-compounds
#13
REVIEW
Agnieszka Wąsik, Lucyna Antkiewicz-Michaluk
Disturbance of cerebral redox homeostasis is the primary cause of human neurodegenerative disorders, such as Parkinson's disease or Alzheimer's disease. Well known experimental research demonstrates that oxidative stress is a main cause of cell death. A high concentration of reactive oxygen and nitrogen species leads to damage of a lot of proteins, lipids and also DNA. Synthetic compounds used for the treatment in the neurodegenerative diseases failed to meet the hopes they had raised and often exhibit a number of side effects...
April 30, 2017: Pharmacological Reports: PR
https://www.readbyqxmd.com/read/28611316/effects-of-resveratrol-curcumin-berberine-and-other-nutraceuticals-on-aging-cancer-development-cancer-stem-cells-and-micrornas
#14
James A McCubrey, Kvin Lertpiriyapong, Linda S Steelman, Steve L Abrams, Li V Yang, Ramiro M Murata, Pedro L Rosalen, Aurora Scalisi, Luca M Neri, Lucio Cocco, Stefano Ratti, Alberto M Martelli, Piotr Laidler, Joanna Dulińska-Litewka, Dariusz Rakus, Agnieszka Gizak, Paolo Lombardi, Ferdinando Nicoletti, Saverio Candido, Massimo Libra, Giuseppe Montalto, Melchiorre Cervello
Natural products or nutraceuticals have been shown to elicit anti-aging, anti-cancer and other health-enhancing effects. A key target of the effects of natural products may be the regulation of microRNA (miR) expression which results in cell death or prevents aging, diabetes, cardiovascular and other diseases. This review will focus on a few natural products, especially on resveratrol (RES), curcumin (CUR) and berberine (BBR). RES is obtained from the skins of grapes and other fruits and berries. RES may extend human lifespan by activating the sirtuins and SIRT1 molecules...
June 12, 2017: Aging
https://www.readbyqxmd.com/read/28596014/designing-food-structure-and-composition-to-enhance-nutraceutical-bioactivity-to-support-cancer-inhibition
#15
REVIEW
David Julian McClements, Hang Xiao
Many types of bioactive molecules found in foods ("nutraceuticals") have been shown to exert anticancer activities, including curcumin, resveratrol, polyphenols, sulforaphane, anthocyanins, genistein, quercetin and lycopene. The potential health benefits of nutraceuticals are often not realized because of their poor water solubility, chemical instability, adverse taste profile, and low oral bioavailability. Carefully designed food matrices are being developed to overcome these problems. Nutraceuticals can be isolated from their natural environment, and then incorporated into functional foods, often with the help of delivery systems (such as emulsions, nanoemulsions, liposomes, biopolymer nanoparticles, and microgels)...
June 6, 2017: Seminars in Cancer Biology
https://www.readbyqxmd.com/read/28579298/regulation-of-gsk-3-activity-by-curcumin-berberine-and-resveratrol-potential-effects-on-multiple-diseases
#16
REVIEW
James A McCubrey, Kvin Lertpiriyapong, Linda S Steelman, Steve L Abrams, Lucio Cocco, Stefano Ratti, Alberto M Martelli, Saverio Candido, Massimo Libra, Giuseppe Montalto, Melchiorre Cervello, Agnieszka Gizak, Dariusz Rakus
Natural products or nutraceuticals promote anti-aging, anti-cancer and other health-enhancing effects. A key target of the effects of natural products may be the regulation of the PI3K/PTEN/Akt/mTORC1/GSK-3 pathway. This review will focus on the effects of curcumin (CUR), berberine (BBR) and resveratrol (RES), on the PI3K/PTEN/Akt/mTORC1/GSK-3 pathway, with a special focus on GSK-3. These natural products may regulate the pathway by multiple mechanisms including: reactive oxygen species (ROS), cytokine receptors, mirco-RNAs (miRs) and many others...
May 26, 2017: Advances in Biological Regulation
https://www.readbyqxmd.com/read/28554320/dietary-polyphenols-and-mitochondrial-function-role-in-health-and-disease
#17
José Teixeira, Daniel Chavarria, Fernanda Borges, Lech Wojtczak, Mariusz R. Wieckowski, Agnieszka Karkucińska-Wieckowska, Paulo J Oliveira
Mitochondria are cytoplasmic double-membraned organelles that are involved in a myriad of key cellular regulatory processes. The loss of mitochondrial function is related to the pathogenesis of several human diseases. Over the last decades, an increasing number of studies have shown that dietary polyphenols can regulate mitochondrial redox status, and in some cases prevent or delay disease progression. This paper aims to review the role of four dietary polyphenols - resveratrol, curcumin, epigallocatechin-3-gallate (EGCG) and quercetin - in molecular pathways regulated by mitochondria and their potential impact in human health...
May 28, 2017: Current Medicinal Chemistry
https://www.readbyqxmd.com/read/28545969/polyphenols-protect-mitochondrial-membrane-against-permeabilization-induced-by-hewl-oligomers-possible-mechanism-of-action
#18
Shaqayeq Roqanian, Ali Akbar Meratan, Shahin Ahmadian, Mahshid Shafizadeh, Atiyeh Ghasemi, Leila Karami
Increasing body of evidence suggests that polyphenols frequently interacting with amyloid aggregates and/or interfering with aggregate species to bind biomembranes may serve as a therapeutic approach for the treatment of amyloid-related diseases. Hence, in the present study, the possible effects of three naturally occurring polyphenols including Curcumin, Quercetin, and Resveratrol on mitochondrial membrane permeabilization induced by Hen Egg White Lysozyme (HEWL) oligomers were investigated. Our results indicated that pre-incubation of mitochondrial homogenate with polyphenols considerably inhibit membrane permeabilization in a concentration dependent manner...
October 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/28541356/food-and-plant-bioactives-for-reducing-cardiometabolic-disease-risk-an-evidence-based-approach
#19
REVIEW
Arrigo F G Cicero, Federica Fogacci, Alessandro Colletti
Cardiovascular diseases (CVDs) are one of the major causes of mortality and disability in Western countries. Prevention is known to be the cornerstone to lessen the incidence of CVDs and also to reduce the economic burden of both the citizen and the healthcare system. "Interventional medicine" certainly puts lifestyle modification as the first therapeutic step, including a healthy diet and physical activity. Secondly, a large body of research individuated a number of food and plant bioactives, which are potentially efficacious in preventing and reducing some highly prevalent CV risk factors, such as hypercholesterolemia, hypertension, vascular inflammation and vascular compliance...
May 25, 2017: Food & Function
https://www.readbyqxmd.com/read/28507012/dietary-factors-promoting-brown-and-beige-fat-development-and-thermogenesis
#20
REVIEW
Meshail Okla, Jiyoung Kim, Karsten Koehler, Soonkyu Chung
Brown adipose tissue (BAT) is a specialized fat tissue that has a high capacity to dissociate cellular respiration from ATP utilization, resulting in the release of stored energy as heat. Adult humans possess a substantial amount of BAT in the form of constitutively active brown fat or inducible beige fat. BAT activity in humans is inversely correlated with adiposity, blood glucose concentrations, and insulin sensitivity; this suggests that strategies aimed at BAT-mediated bioenergetics are an attractive therapeutic target in combating the continuing epidemic of obesity and diabetes...
May 2017: Advances in Nutrition
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