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chrysin

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https://www.readbyqxmd.com/read/29132837/prepubertal-chrysin-exposure-upregulates-either-ar-in-male-ventral-prostate-or-ar-and-er%C3%AE-in-skene-s-paraurethral-gland-of-pubertal-and-adult-gerbils
#1
Naiara C S Ribeiro, Mônica S Campos, Mariana B Santos, Gabriela M Ayusso, Patrícia S L Vilamaior, Luis O Regasini, Sebastião R Taboga, Manoel F Biancardi, Ana P S Perez, Fernanda C A Santos
Chrysin is a plant-derived polyphenol that has the potential to increase endogenous testosterone levels both by inhibiting the aromatase enzyme and by stimulating testicular steroidogenesis. The effects of chrysin on the prostate are unknown, especially during its development and functional maturation. Thus, the aim of this study was to evaluate the effects of chrysin prepubertal exposure on the male and female prostates of both pubertal and adult gerbils. To evaluate the possible androgenic responses of chrysin, gerbils were also exposed to testosterone...
November 10, 2017: Fitoterapia
https://www.readbyqxmd.com/read/29132021/fibroin-dodecanol-floating-solidification-microextraction-for-the-preconcentration-of-trace-levels-of-flavonoids-in-complex-matrix-samples
#2
Xuan Chen, Jie Li, Shuang Hu, Xiaohong Bai, Haodong Zhao, Yi Zhang
A new fibroin/dodecanol floating solidification microextraction, coupled with high performance liquid chromatography, was developed and applied for enrichment and quantification of the trace flavonoids in traditional Chinese medicine and biological samples. Also, fibroin sensibilization mechanism was described, and influence of sample matrix to enrichment factor was investigated. In this method, a homogeneous fibroin/dodecanol of dispersed solution was employed as microextraction phase to flavonoids (myricetin, quercetin, isorhamnetin, chrysin, kaempferide), the several critical parameters affecting the performance, such as organic extractant, amount of fibroin in organic extractant, volume of extraction phase, dispersant, salt concentration, pH of sample phase, stirring rate, extraction time, and volume of sample phase were tested and optimized...
September 18, 2017: Journal of Chromatography. B, Analytical Technologies in the Biomedical and Life Sciences
https://www.readbyqxmd.com/read/29129989/inhibitory-effect-of-propolis-on-platelet-aggregation-in-vitro
#3
Yun-Xiang Zhang, Ting-Ting Yang, Liu Xia, Wei-Fen Zhang, Jia-Fu Wang, Ya-Ping Wu
Platelet hyperactivity plays an important role in arterial thrombosis and atherosclerosis. The present study was aimed to investigate the effects of different extracts of propolis and components of flavonoids on platelet aggregation. Platelet-rich plasma was prepared and incubated in vitro with different concentrations of the tested extracts and components of flavonoids. Platelets aggregation was induced by different agonists including adenosine diphosphate (ADP, 10 μM), thrombin receptor activator peptide (TRAP, 50 μM), and collagen (5 μg/mL)...
2017: Journal of Healthcare Engineering
https://www.readbyqxmd.com/read/29127880/effects-of-flavonoids-on-microrna-145-regulation-through-klf4-and-myocardin-in-neointimal-formation-in-vitro-and-in-vivo
#4
Chiu-Mei Lin, Bao-Wei Wang, Chun-Ming Pan, Wei-Jen Fang, Su-Kiat Chua, Sheng-Wen Hou, Hang Chang, Kou-Gi Shyu
MicroRNA 145 (miR-145) is a critical modulator of vascular smooth muscle cell (VSMC) phenotyping and proliferation. Flavonoids have been studied extensively due to their diverse pharmacological properties, including anti-inflammatory effects. The aims of this study is designed to evaluate the atheroprotective effects on angiotensin II (Ang II)-induced miR-145 and Klf4/myocardin expression in vitro and in vivo of flavonoids, including (-)-epigallocatechin gallate (EGCG), chrysin, wogonin, silibinin, and ferulic acid...
September 14, 2017: Journal of Nutritional Biochemistry
https://www.readbyqxmd.com/read/29126792/in-vivo-cellular-and-molecular-gastroprotective-mechanisms-of-chrysin-emphasis-on-oxidative-stress-inflammation-and-angiogenesis
#5
Mina Y George, Ahmed Esmat, Mariane G Tadros, Ebtehal El-Demerdash
Gastric ulcer is one of the major gastrointestinal disorders affecting people worldwide. Despite medical advances, management of gastric ulcer and its complications remains a challenge facing medicine nowadays. In addition, currently available medicines exhibit limited efficacy and several side effects. In the current study, the potential protective effects of chrysin -naturally occurring flavonoid- were tested against indomethacin-induced gastric ulcer model in rats. It was found that chrysin in both doses; 50 and 100mg/kg were effective in promoting mucus secretion and preventing the rise in ulcer and lesion indices, acid production and histologic changes induced by indomethacin...
November 7, 2017: European Journal of Pharmacology
https://www.readbyqxmd.com/read/29116937/synthesis-and-biological-evaluation-of-acyl-derivatives-of-hydroxyflavones-as-potent-antiproliferative-agents-against-drug-resistance-cell-lines
#6
Monika Stompor, Marta Świtalska, Joanna Wietrzyk
The synthesis of hydroxyflavone derivatives is described. The acyl derivatives of 3-, 6-, 7-hydroxyflavones (compounds 2, 4, 6, respectively) and chrysin (5,7-dihydroxyflavone, 7) were obtained in high yields and evaluated in vitro for their cytotoxic activity against several cancer cell lines of different origin: MCF-7 (breast cancer), A549 (nonsmall cell lung cancer), MES-SA (uterine sarcoma), LoVo (colon cancer), drug-resistant human cancer cells (MES-SA/DX5, LoVo/DX) and also towards non-cancer cell line MCF-10A (normal breast epithelial cells)...
November 8, 2017: Zeitschrift Für Naturforschung. C, A Journal of Biosciences
https://www.readbyqxmd.com/read/29102848/characterization-of-non-covalent-binding-of-6-hydroxyflavone-and-5-7-dihydroxyflavone-with-bovine-hemoglobin-multi-spectroscopic-and-molecular-docking-analyses
#7
Sourav Das, Alka Karn, Rubi Sarmah, Mostofa Ataur Rohman, Sudipta Koley, Pooja Ghosh, Atanu Singha Roy
Flavonoids are biologically imperative compounds used as anti-oxidants, anti-cancer, anti-bacterial agents etc. The current work reports comprehensive binding studies of two important flavonoids, 6-hydroxyflavone and 5,7-dihydroxyflavone (chrysin) with bovine hemoglobin (BHb) at 298K and 308K, in aqueous medium using UV-vis spectroscopy, steady state fluorescence, circular dichroism (CD) measurements, Fourier Transform infrared spectroscopy (FT-IR) and molecular docking studies. Both 6-hydroxyflavone and chrysin can quench the intrinsic fluorescence intensity of BHb via static quenching mechanism...
October 28, 2017: Journal of Photochemistry and Photobiology. B, Biology
https://www.readbyqxmd.com/read/29101819/simultaneous-quantification-of-five-biflavonoids-in-rat-plasma-by-lc-esi-ms-ms-and-its-application-to-a-comparatively-pharmacokinetic-study-of-selaginella-doederleinii-hieron-extract-in-rats
#8
Bing Chen, Xuewen Wang, Yulian Zou, Weiying Chen, Gang Wang, Wensong Yao, Peiying Shi, Shaoguang Li, Shilan Lin, Xinhua Lin, Hong Yao
Selaginella doederleinii Hieron is a widely used as folk Chinese medicine for treatment of different cancers. Our previous investigations have confirmed that the total biflavonoids in ethyl acetate extract from S. doederleinii (SDEA) have favorable anticancer potentials. However, the in vivo process of its bioactive ingredients remains unknown. In this paper, a sensitive and reliable method was developed for simultaneous quantification of main five biflavonoids, including amentoflavone, robustaflavone, 2″,3″-dihydro-3',3″-biapigenin, 3',3″-binaringenin and delicaflavone in the ethyl acetate extract of S...
October 24, 2017: Journal of Pharmaceutical and Biomedical Analysis
https://www.readbyqxmd.com/read/29093638/inhibition-of-hif1%C3%AE-and-pdk-induces-cell-death-of-glioblastoma-multiforme
#9
Jiwon Esther Han, Pyung Won Lim, Chul Min Na, You Sik Choi, Joo Young Lee, Yona Kim, Hyung Woo Park, Hyo Eun Moon, Man Seung Heo, Hye Ran Park, Dong Gyu Kim, Sun Ha Paek
Glioblastoma multiforme (GBM) is the most common and aggressive form of brain tumors. GBMs, like other tumors, rely relatively less on mitochondrial oxidative phosphorylation (OXPHOS) and utilize more aerobic glycolysis, and this metabolic shift becomes augmented under hypoxia. In the present study, we investigated the physiological significance of altered glucose metabolism and hypoxic adaptation in the GBM cell line U251 and two newly established primary GBMs (GBM28 and GBM37). We found that these three GBMs exhibited differential growth rates under hypoxia compared to those under normoxia...
October 2017: Experimental Neurobiology
https://www.readbyqxmd.com/read/29092670/protective-effects-of-chrysin-on-sub-acute-diazinon-induced-biochemical-hematological-histopathological-alterations-and-genotoxicity-indices-in-male-balb-c-mice
#10
Majid Zeinali, Naser Tayebi Meybodi, Seyed Abdolrahim Rezaee, Houshang Rafatpanah, Hossein Hosseinzadeh
Chrysin (CH) is a natural flavone which possesses antioxidant, anti-cancer, and anti-inflammatory properties. The aim of the present study was to investigate the effects of CH on biochemical parameters, histopathological changes, and genotoxicity and hematological indices in diazinon (DZN)-induced toxicity in BALB/c mice. We induced sub-acute toxicity in mice using DZN (20 mg/kg/day) and treated them with CH at the 12.5, 25, and 50 mg/kg/day five times/week in 28 days. In our study, DZN increased lipid profile and liver function tests (LFTs) and creatinine (Cr) but decreased the red blood cell acetylcholinesterase (RBC-AChE) activity and glucose level...
November 2, 2017: Drug and Chemical Toxicology
https://www.readbyqxmd.com/read/29083232/co-delivery-of-curcumin-and-chrysin-by-polymeric-nanoparticles-inhibit-synergistically-growth-and-htert-gene-expression-in-human-colorectal-cancer-cells
#11
Javid Lotfi-Attari, Younes Pilehvar-Soltanahmadi, Mehdi Dadashpour, Shahriar Alipour, Raana Farajzadeh, Shahrzad Javidfar, Nosratollah Zarghami
Nanoparticle (NP)-based combinational chemotherapy has been proposed as a potent approach for improving intracellular drug concentrations and attaining synergistic effects in colorectal cancer therapy. Here, two well-known herbal substances, Curcumin (Cur) and Chrysin (Chr), were co-encapsulated in PEGylated PLGA NPs and investigated their synergistic inhibitory effect against Caco-2 cancer cells. Characterization of nanoformulated drugs was determined using DLS, FTIR, TEM, and SEM. Drug release study was performed using dialysis method...
October 30, 2017: Nutrition and Cancer
https://www.readbyqxmd.com/read/29063798/design-synthesis-and-biological-evaluation-of-chrysin-benzimidazole-derivatives-as-potential-anticancer-agents
#12
Zhe Wang, Xiangping Deng, Shujuan Xiong, Runde Xiong, Juan Liu, Liu Zou, Xiaoyong Lei, Xuan Cao, Zhizhong Xie, Yanming Chen, Yunmei Liu, Xing Zheng, Guotao Tang
A series of chrysin benzimidazole derivatives were synthesised and evaluated for their anticancer activity in the search for potential anticancer agents. Among them, compound 18 displayed the most potent anti-proliferative activity against MFC cells with IC50 values of 25.72 ± 3.95 μM. The flow cytometry results displayed that compound 18 induced apoptosis of MFC cells in a dose-dependent manner and caused the cell cycle to be arrested in the G0/G1 phase. Furthermore, the preliminary anticancer activity in vivo was also studied in tumour-bearing mice, and the compound 18 exerted good inhibition effect on tumour growth...
October 24, 2017: Natural Product Research
https://www.readbyqxmd.com/read/29057920/halogenated-chrysins-inhibit-dengue-and-zika-virus-infectivity
#13
Aphinya Suroengrit, Wanchalerm Yuttithamnon, Pimsiri Srivarangkul, Saran Pankaew, Krongkan Kingkaew, Warinthorn Chavasiri, Siwaporn Boonyasuppayakorn
Dengue virus infection is a global threat for which no specific treatment has not been established. Previous reports suggested chrysin and flavanone derivatives were potential flaviviral inhibitors. Here, we reported two halogenated chrysins, abbreviated FV13 and FV14, were highly potent against DENV1-4 and ZIKV infectivities with the FV13 EC50 values of 2.30 ± 1.04, 1.47 ± 0.86, 2.32 ± 1.46, 1.78 ± 0.72 and 1.65 ± 0.86 µM; and FV14 EC50 values of 2.30 ± 0.92, 2.19 ± 0...
October 20, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29054324/protective-role-of-chrysin-on-6-hydroxydopamine-induced-neurodegeneration-a-mouse-model-of-parkinson-s-disease-involvement-of-neuroinflammation-and-neurotrophins
#14
André T R Goes, Cristiano R Jesse, Michelle S Antunes, Fernando Vagner Lobo Ladd, Aliny Antunes Barbosa Lobo Ladd, Cristiane Luchese, Natalia Paroul, Silvana Peterini Boeira
Chrysin is a natural flavonoid which is found in bee propolis, honey and various plants, and neuroprotective effect of chrysin in mice was previously demonstrated by our group. Neuroinflammation, neurotrophic factors and neuronal recovery factors associated with the neuroprotective effect of this flavonoid require further investigations. Thus, now we investigated the possible involvement of inflammatory cytokines, neurotrophic factors and neuronal recovery in the effect of chrysin in 6-hydroxidopamine (6-OHDA), a well-established model of Parkinson's disease, in striatum of mice...
October 17, 2017: Chemico-biological Interactions
https://www.readbyqxmd.com/read/29050978/chrysin-attenuates-atopic-dermatitis-by-suppressing-inflammation-of-keratinocytes
#15
Jin Kyeong Choi, Yong Hyun Jang, Soyoung Lee, Sang-Rae Lee, Young-Ae Choi, Meiling Jin, Jung Ho Choi, Jee Hun Park, Pil-Hoon Park, Hyukjae Choi, Taeg Kyu Kwon, Dongwoo Khang, Sang-Hyun Kim
We previously reported the inhibitory effect of chrysin, a natural flavonoid plentifully contained in propolis, vegetables and fruits, on the mast cell-mediated allergic reaction. In this study, we evaluated the effect of chrysin on atopic dermatitis (AD) and defined underlying mechanisms of action. We used an AD model in BALB/c mice by the repeated local exposure of 2,4-dinitrochlorobenzene (DNCB) and house dust mite (Dermatophagoides farinae extract, DFE) to the ears. Repeated alternative treatment of DNCB/DFE caused AD-like skin lesions...
October 16, 2017: Food and Chemical Toxicology
https://www.readbyqxmd.com/read/29037505/in-vitro-antimicrobial-and-antimycobacterial-activity-and-hplc-dad-screening-of-phenolics-from-chenopodium-ambrosioides-l
#16
Roberta S Jesus, Mariana Piana, Robson B Freitas, Thiele F Brum, Camilla F S Alves, Bianca V Belke, Natália Jank Mossmann, Ritiel C Cruz, Roberto C V Santos, Tanise V Dalmolin, Bianca V Bianchini, Marli M A Campos, Liliane de Freitas Bauermann
The main objective of this study was to demonstrate the antimicrobial potential of the crude extract and fractions of Chenopodium ambrosioides L., popularly known as Santa-Maria herb, against microorganisms of clinical interest by the microdilution technique, and also to show the chromatographic profile of the phenolic compounds in the species. The Phytochemical screening revealed the presence of cardiotonic, anthraquinone, alkaloids, tannins and flavonoids. The analysis by HPLC-DAD revealed the presence of rutin in the crude extract (12...
July 19, 2017: Brazilian Journal of Microbiology: [publication of the Brazilian Society for Microbiology]
https://www.readbyqxmd.com/read/28972678/antioxidant-anti-inflammatory-and-enzyme-inhibitory-activity-of-natural-plant-flavonoids-and-their-synthesized-derivatives
#17
Shivraj Hariram Nile, Young Soo Keum, Arti Shivraj Nile, Shivkumar S Jalde, Rahul V Patel
The synthesized flavonoid derivatives were examined for their antioxidant, anti-inflammatory, xanthine oxidase (XO), urease inhibitory activity, and cytotoxicity. Except few, all the flavonoids under this study showed significant antioxidant activity (45.6%-85.5%, 32.6%-70.6%, and 24.9%-65.5% inhibition by DPPH, ferric reducing/antioxidant power, and oxygen radical absorption capacity assays) with promising TNF-α inhibitory activity (42%-73% at 10 μM) and IL-6 inhibitory activity (54%-81% at 10 μM) compared with that of control dexamethasone...
October 3, 2017: Journal of Biochemical and Molecular Toxicology
https://www.readbyqxmd.com/read/28964367/characterization-of-phenolic-and-other-polar-compounds-in-peel-and-flesh-of-pink-guava-psidium-guajava-l-cv-criolla-by-ultra-high-performance-liquid-chromatography-with-diode-array-and-mass-spectrometric-detection
#18
Carolina Rojas-Garbanzo, Benno F Zimmermann, Nadine Schulze-Kaysers, Andreas Schieber
Pink guava (Psidium guajava L.) is a highly consumed fruit in tropical countries. Despite of interesting research on health effects of this fruit, investigations into the profile of secondary plant metabolites are scarce. In this study, the phenolic compounds in the peel and flesh of pink guava were characterized by ultra-high performance liquid chromatography with diode array and mass spectrometric detection. Sixty phenolic compounds were characterized by MS(2) and classified as ellagitannins, flavones, flavonols, flavanols, proanthocyanidins, dihydrochalcones, and anthocyanidins, and non-flavonoids such as phenolic acid derivatives, stilbenes, acetophenones, and benzophenones...
October 2017: Food Research International
https://www.readbyqxmd.com/read/28922723/protective-effects-of-mirtazapine-and-chrysin-on-experimentally-induced-testicular-damage-in-rats
#19
Alaa E El-Sisi, Magda E El-Sayad, Nermine M Abdelsalam
Mirtazapine is an antidepressant with prominent antioxidant effects. Chrysin, a natural flavone, exhibits multiple pharmacological actions. This study was designed to investigate the potential protective effects of chrysin and mirtazapine against nitrofurazone-induced testicular damage in rats. Possible underlying mechanisms such as oxidative stress, inflammation and apoptosis were also investigated. Testicular damage was induced by oral administration of nitrofurazone (50mg/kg/day) for two weeks. Chrysin (25 and 50mg/kg/day, p...
November 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28902458/the-impact-of-some-natural-phenolic-compounds-on-carbonic-anhydrase-acetylcholinesterase-butyrylcholinesterase-and-%C3%AE-glycosidase-enzymes-an-antidiabetic-anticholinergic-and-antiepileptic-study
#20
Parham Taslimi, Cuneyt Caglayan, İlhami Gulcin
Natural products from food and plant sources have been used for medicinal usage for ages. Also, natural products with therapeutic significance are compounds derived from animals, plants, or any microorganism. In this study, chrysin, carvacrol, hesperidin, zingerone, and naringin as natural phenols showed excellent inhibitory effects against human (h) carbonic anhydrase (CA) isoforms I and II (hCA I and II), α-glucosidase (α-Gly), acetylcholinesterase (AChE), and butyrylcholinesterase (BChE). These phenolic compounds were tested for the inhibition of α-glycosidase, hCA I, hCA II, AChE, and BChE enzymes and demonstrated efficient inhibition profiles with Ki values in the range of 3...
September 13, 2017: Journal of Biochemical and Molecular Toxicology
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