Read by QxMD icon Read

bioactive compounds

Jinbin Yuan, Yang Chen, Jian Liang, Chong-Zhi Wang, Xiaofei Liu, Zhihong Yan, Yi Tang, Jiankang Li, Chun-Su Yuan
Ginseng is one of the most widely used natural medicines in the world. Recent studies have suggested Panax ginseng has a wide range of beneficial effects on aging, central nervous system disorders, and neurodegenerative diseases. However, knowledge about the specific bioactive components of ginseng is still limited. This work aimed to screen for the bioactive components in Panax ginseng that act against neurodegenerative diseases, using the target cell-based bioactivity screening method. Firstly, component analysis of Panax ginseng extracts was performed by UPLC-QTOF-MS, and a total of 54 compounds in white ginseng were characterized and identified according to the retention behaviors, accurate MW, MS characteristics, parent nucleus, aglycones, side chains, and literature data...
October 17, 2016: Journal of Chromatography. B, Analytical Technologies in the Biomedical and Life Sciences
Iuliana Aprodu, Florentina-Mihaela Ursache, Mihaela Turturică, Gabriela Râpeanu, Nicoleta Stănciuc
Sea buckthorn has gained importance as a versatile nutraceutical, due to its high nutritive value in terms of carotenoids content. β-Lactoglobulin (β-LG) is a natural carrier for various bioactive compounds. In this study, the effect of thermal treatment in the temperature range of 25 to 100°C for 15min on the complex formed by β-LG and carotenoids from sea buckthorn was reported, based on fluorescence spectroscopy, molecular docking and molecular dynamics simulation results. Also, the berries extracts were analyzed for their carotenoids content...
October 17, 2016: Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy
Ben Ajmia Wafa, Mohamed Makni, Sonda Ammar, Lamia Khannous, Amal Ben Hassana, Mohamed Bouaziz, Nour Eddine Es-Safi, Radhouane Gdoura
Punica granatum L. is widely recognized for its potency against a broad spectrum of bacterial pathogens. The purpose of this study was to explore the inhibitory and the bactericidal activities of Punica granatum against Salmonella strains. The effect of extracts obtained from different parts (peels, seeds, juice and flowers) of pomegranate and using different solvents against Salmonella enterica serovars Kentucky and Enteritidis isolated from chicken meat was thus investigated. Salmonella strains were identified with the standard API-20E system and confirmed by real time PCR...
October 11, 2016: International Journal of Food Microbiology
Hatice Tohma, Ekrem Köksal, Ömer Kılıç, Yusuf Alan, Mustafa Abdullah Yılmaz, İlhami Gülçin, Ercan Bursal, Saleh H Alwasel
The identification and quantification of the phenolic contents of methanolic extracts of three Salvia L. species namely S. brachyantha (Bordz.) Pobed, S. aethiopis L., and S. microstegia Boiss. and Bal. were evaluated using reverse phase high performance liquid chromatography, UV adsorption, and mass spectrometry (RP-HPLC/MS). In order to determine the antioxidant capacity of these species, cupric ions (Cu(2+)) reducing assay (CUPRAC) and ferric ions (Fe(3+)) reducing assay (FRAP) were performed to screen the reducing capacity and 1,1-diphenyl-2-picrylhydrazyl (DPPH) assay was employed for evaluation of the radical scavenging activity for both solvents...
October 21, 2016: Antioxidants (Basel, Switzerland)
Xiao-Ling Wang, Zhong-Yang Ding, Gao-Qiang Liu, Hailong Yang, Guo-Ying Zhou
Triterpene acids (TAs) are the major bioactive constituents in the medicinal fungus Ganoderma lingzhi. However, fermentative production of TAs has not been optimized for commercial use, and whether the TAs isolated from G. lingzhi submerged culture mycelia possess antitumor activity needs to be further proven. In this study, enhanced TA yield and productivity were attained with G. lingzhi using response surface methodology. The interactions of three variables were studied using a Box-Benhnken design, namely initial pH, dissolved oxygen (DO) and fermentation temperature...
October 20, 2016: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
Yiqiong Pu, Xitong Zhang, Qi Zhang, Bing Wang, Yuxi Chen, Chuanqi Zang, Yuqin Wang, Tina Ting-Xia Dong, Tong Zhang
20(S)-Protopanaxadiol (PPD), a bioactive compound extracted from ginseng, possesses cardioprotective, neuroprotective, anti-inflammatory, antiestrogenic, anticancer and anxiolytic effects. However, the clinical application of PPD is limited by its weak aqueous solubility. In this study, we optimized an efficient method of preparing its phospholipid complex (PPD-PLC) using a central composite design and response surface analysis. The prepared PPD-PLC was characterized by differential scanning calorimetric, powder X-ray diffraction, Fourier-transformed infrared spectroscopy and nuclear magnetic resonance analyses associated with molecular docking calculation...
October 19, 2016: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
Aleksandra S Kristo, Dorothy Klimis-Zacas, Angelos K Sikalidis
Dietary patterns, including regular consumption of particular foods such as berries as well as bioactive compounds, may confer specific molecular and cellular protection in addition to the overall epidemiologically observed benefits of plant food consumption (lower rates of obesity and chronic disease risk), further enhancing health. Mounting evidence reports a variety of health benefits of berry fruits that are usually attributed to their non-nutritive bioactive compounds, mainly phenolic substances such as flavonoids or anthocyanins...
October 19, 2016: Antioxidants (Basel, Switzerland)
Claudia Melis, Rita Meleddu, Andrea Angeli, Simona Distinto, Giulia Bianco, Clemente Capasso, Filippo Cottiglia, Rossella Angius, Claudiu T Supuran, Elias Maccioni
The isatin scaffold is the constitutive fragment of several natural and synthetic bioactive molecules. Albeit several benzene sulphonamide-based carbonic anhydrase inhibitors (CAIs) have been reported, only recently isatin benzene sulphonamides have been studied and proposed as CAIs. In this study we have designed, synthesised, and evaluated the biological activity of a series of differently substituted isatin-based benzene sulphonamides which have been designed for the inhibition of carbonic anhydrase isoforms...
October 24, 2016: Journal of Enzyme Inhibition and Medicinal Chemistry
Maria Inês Dias, Lillian Barros, Patricia Morales, Montaña Cámara, Maria José Alves, M Beatriz P P Oliveira, Celestino Santos-Buelga, Isabel C F R Ferreira
Wild Fragaria vesca L. fruits were studied regarding nutritional and phytochemical compounds, and also antioxidant, antibacterial and biofilm formation inhibition activities. The fruits are good sources of carbohydrates (e.g., sucrose), soluble dietary fiber and polyunsaturated fatty acids, mainly linoleic and linolenic acids, as well as other components such as citric and succinic acids, and vitamins B9 and E (mainly γ-tocopherol). Significant amounts of soluble sugars, citric acid and some amounts of ascorbic acid, vitamins B9 and E (only α-tocopherol) were found also in the infusions...
October 24, 2016: Food & Function
Guillermo Cásedas, Francisco Les, Maria Pilar Gómez-Serranillos, Carine Smith, Víctor López
Sour cherry juice (Prunus cerasus) is consumed as a nutritional supplement claiming health effects. The aim of the study was to evaluate the different properties of sour cherry juice in terms of antioxidant activity and inhibition of target enzymes in the central nervous system and diabetes. The content of polyphenols and anthocyanins was quantified. Different experiments were carried out to determine the radical scavenging properties of the juice. The activity of sour cherry juice was also tested in physiological relevant enzymes of the central nervous system (acetylcholinesterase, monoamine oxidase A, tyrosinase) and others involved in type 2 diabetes (α-glucosidase, dipeptidyl peptidase-4)...
October 24, 2016: Food & Function
Jonghoon Kim, Jinjoo Jung, Jaeyoung Koo, Wansang Cho, Won Seok Lee, Chanwoo Kim, Wonwoo Park, Seung Bum Park
Diversity-oriented synthesis (DOS) can provide a collection of diverse and complex drug-like small molecules, which is critical in the development of new chemical probes for biological research of undruggable targets. However, the design and synthesis of small-molecule libraries with improved biological relevance as well as maximized molecular diversity represent a key challenge. Herein, we employ functional group-pairing strategy for the DOS of a chemical library containing privileged substructures, pyrimidodiazepine or pyrimidine moieties, as chemical navigators towards unexplored bioactive chemical space...
October 24, 2016: Nature Communications
Bartosz Tylkowski, Martyna Nowak, Irene Tsibranska, Anna Trojanowska, Łukasz Marciniak, Ricard Garcia Valls, Tania Gumi, Marta Giamberini, Renata Jastrząb
BACKGROUND: This review aims to present the relevant background information and current research status in concentration of polyphenols using membrane technologies. The potential implementation of membrane separation to bioactive compounds like soluble phenolics from aqueous and organic solvent solutions is gaining increasing interest in the recent years. This review does not pretend to cover the abundant published literature on the subject, but to be representative for the observed tendencies in membrane processes applications for concentration of polyphenols derived from natural products...
October 21, 2016: Current Pharmaceutical Design
Halise Inci Gul, Ebru Mete, Sakip Emre Eren, Hiroshi Sakagami, Cem Yamali, Claudiu T Supuran
In this study, 4-[3-(4-hydroxyphenyl)-5-aryl-4,5-dihydro-pyrazol-1-yl]benzenesulfonamide (1-9) types compounds were synthesized and their chemical structures were confirmed by (1)H NMR, (13)C NMR and HRMS spectra. Cytotoxic and carbonic anhydrase (CA) inhibitory effects of the compounds were investigated. Cytotoxicity experiments pointed out that compound 4, (4-[5-(4-chlorophenyl)-3-(4-hydroxyphenyl)-4,5-dihydro-pyrazol-1-yl]benzenesulfonamide), exerting the highest tumor selectivity (TS) and potency selectivity expression (PSE) values, can be considered as a lead compound of this study in terms of development of novel anticancer agents...
October 23, 2016: Journal of Enzyme Inhibition and Medicinal Chemistry
Hem Singh, Atish Prakash, A N Kalia, Abu Bakar Abdul Majeed
Previously explored combination therapies mostly involved the use of bioactive molecules. It is believed that herbal compounds containing multiple plant products have synergistic hepatoprotective effects and could enhance the desired actions. To investigate the combination of ethanolic fruits extract of Solanum xanthocarpum (SX) and Juniperus communis (JC) against Paracetamol (PCM) and Azithromycin (AZM) induced liver toxicity in rats. Liver toxicity was induced by combine oral administration of PCM (250 mg/kg) and AZM (200 mg/kg) for 7 days in Wistar rats...
October 2016: Journal of Traditional and Complementary Medicine
Hui-Li Tan, Kok-Gan Chan, Priyia Pusparajah, Acharaporn Duangjai, Surasak Saokaew, Tahir Mehmood Khan, Learn-Han Lee, Bey-Hing Goh
Cardiovascular diseases (CVDs) are among the leading causes of morbidity and mortality in both the developed and developing world. Rhizoma coptidis (RC), known as Huang Lian in China, is the dried rhizome of medicinal plants from the family Ranunculaceae, such as Coptis chinensis Franch, C. deltoidea C.Y. Cheng et Hsiao, and C. teeta Wall which has been used by Chinese medicinal physicians for more than 2000 years. In China, RC is a common component in traditional medicines used to treat CVD associated problems including obesity, diabetes mellitus, hyperlipidemia, hyperglycemia and disorders of lipid metabolism...
2016: Frontiers in Pharmacology
Alfred Maroyi
ETHNOPHARMACOLOGICAL RELEVANCE: Crinum macowanii is a deciduous bulbous plant which grows in east, central and southern Africa. Crinum macowanii has been used as herbal medicine by the indigenous people of east and southern Africa has for several centuries. The bulb, leaves and roots of C. macowanii are reported to possess diverse medicinal properties and used to treat or manage various human and animal diseases and ailments throughout its distributional range. Crinum macowanii is used traditionally as a remedy for boils, diarrhoea, fever, inflammation, respiratory system problems, skin rashes, tuberculosis, wounds and urinary tract problems...
October 20, 2016: Journal of Ethnopharmacology
Lorène Penazzi, Julia Lorengel, Frederik Sündermann, Nataliya Golovyashkina, Stefan Marre, Chantal M B Mathis, Lars Lewejohann, Roland Brandt, Lidia Bakota
DMSO has a widespread use as a vehicle for water-insoluble therapeutic drug candidates but may also exert disease-relevant pharmacological effects by itself. However, its influence on the CNS has hardly been addressed. Here we examined the brain structure and function following chronic exposure to low DMSO dose at a paradigm with flawed synaptic connectivity in a preclinical transgenic mouse model for Alzheimer's disease (APPSDL mice). DMSO treatment increased spine density in a region-specific manner in the hippocampus of APPSDL mice ex vivo and in vivo...
October 20, 2016: Neuropharmacology
Ibtihel Khemakhem, Margarita Hussam Ahmad-Qasem, Enrique Barrajón Catalán, Vicente Micol, Jose Vicente García-Pérez, Mohamed Ali Ayadi, Mohamed Bouaziz
In this study, the effect of temperature and ultrasonic application on extraction kinetics of polyphenols from dried olive leaf was investigated. Conventional (CVE) and ultrasonic-assisted extraction (UAE) were performed at 10, 20, 30, 50 and 70°C using water as solvent. Extracts were characterized by measuring the total phenolic content, the antioxidant capacity and the oleuropein content (HPLC-DAD/MS-MS). Moreover, Naik's model was used to mathematically describe the extraction kinetics. The experimental results showed that phenolic extraction was faster in UAE (ultrasonic-assisted extraction) than in CVE (conventional extraction), being extraction kinetics satisfactorily described using Naik model (include VAR>98%)...
January 2017: Ultrasonics Sonochemistry
Alicia Cervantes-Elizarrarás, Javier Piloni-Martini, Esther Ramírez-Moreno, Ernesto Alanís-García, Norma Güemes-Vera, Carlos Alberto Gómez-Aldapa, Quinatzin Yadira Zafra-Rojas, Nelly Del Socorro Cruz-Cansino
The purpose of this research was to optimize the thermoultrasound conditions for blackberry juice using the response surface methodology and considering juice quality parameters and antioxidant capacity. With the exception of microbial growth, the response variables showed high correlation coefficients with the mathematical model (R(2)adj>0.91). Thermoultrasound treatment inactivated all the evaluated microorganisms, and at the optimum conditions (50±1°C at 17±1min) it increased enzyme inactivation and antioxidant activity in comparison to pasteurized juice...
January 2017: Ultrasonics Sonochemistry
Ana Clara Aprotosoaie, Irina-Iuliana Costache, Anca Miron
Anethole is the main fragrance and bioactive compound of anise, fennel, and star anise spices and more than other 20 plant species. It is widely used as flavor agent in food industry and other industries, in cosmetics, perfumery, and pharmaceuticals. In the last few years, various studies have revealed multiple beneficial effects of anethole for human health, such as anti-inflammatory, anticarcinogenic and chemopreventive, antidiabetic, immunomodulatory, neuroprotective, or antithrombotic, that are mediated by the modulation of several cell signaling pathways, mainly NF-kB and TNF-α signaling, and various ion channels...
2016: Advances in Experimental Medicine and Biology
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"