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Icariin

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https://www.readbyqxmd.com/read/27909730/a-sensitive-and-specific-indirect-competitive-enzyme%C3%A2-linked-immunosorbent-assay-for-the-detection-of-icariin
#1
Jinjun Cheng, Yue Zhang, Shuchen Liu, Baoping Qu, Meiling Zhang, Xiaoman Liu, Yan Zhao, Huihua Qu
In the present study, a novel monoclonal antibody (MAb) specific for icariin (ICA) was prepared and characterized. A hybridoma‑secreting MAb against icariin was produced by fusing splenocytes immunized with an ICA‑bovine serum albumin conjugate with a hypoxanthine‑aminopterin‑thymidine‑sensitive mouse myeloma SP2/0 cell line. The antibody showed high specificity for ICA with almost no cross‑reactivity against the majority of structurally‑related chemicals. Subsequently, an indirect competitive enzyme‑linked immunosorbent assay (ELISA) for ICA was established and characterized...
November 30, 2016: Molecular Medicine Reports
https://www.readbyqxmd.com/read/27879670/the-protective-effects-of-icariin-against-the-homocysteine-induced-neurotoxicity-in-the-primary-embryonic-cultures-of-rat-cortical-neurons
#2
Xiao-Ang Li, Yuen-Shan Ho, Lei Chen, W L Wendy Hsiao
Icariin, an ingredient in the medicinal herb Epimedium brevicornum Maxim (EbM), has been considered as a potential therapeutic agent for neurodegenerative diseases such as Alzheimer's disease (AD). Hyperhomocysteinaemia is a risk factor for AD and other associated neurological diseases. In this study we aim to investigate whether icariin can reverse homocysteine (Hcy)-induced neurotoxicity in primary embryonic cultures of rat cortical neurons. Our findings demonstrated that icariin might be able restore the cytoskeleton network damaged by Hcy through the modulation of acetyl-α-tubulin, tyrosinated-α-tubulin, and phosphorylation of the tubulin-binding protein Tau...
November 22, 2016: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/27848901/herb-medicines-against-osteoporosis-active-compounds-relevant-biological-mechanisms
#3
Lei Wu, Zhuoyan Ling, Xueqin Feng, Caiping Mao, Zhice Xu
Osteoporosis is one of common bone disorders, affecting millions of people worldwide. Treatments of osteoporosis consist of pharmacotherapy and non-pharmacological interventions, such as mineral supplementation, lifestyle changes, and exercise programs. Due to the minimum side effects and favorable cost-effective therapeutic effects, herbal medicine has been widely applied in clinical practices for more than 2,000 years in China. Of the many traditional formulas reported for treating bone diseases, 4 single herbs namely (1) Herba Epimedii, (2) Rhizoma Drynariae, (3) Fructus Psoraleae, and (4) Cortex Eucommiae, are considered as the featured "Kidney-Yang" tonics, and frequently and effectively applied for preventing and treating osteoporosis...
November 16, 2016: Current Topics in Medicinal Chemistry
https://www.readbyqxmd.com/read/27848250/pharmacological-effects-of-active-components-of-chinese-herbal-medicine-in-the-treatment-of-alzheimer-s-disease-a-review
#4
Zhi-Yong Wang, Jian-Gang Liu, Hao Li, Hui-Ming Yang
Alzheimer's disease (AD), the most common neurodegenerative disorder associated with dementia, not only severely decreases the quality of life for its victims, but also brings a heavy economic burden to the family and society. Unfortunately, few chemical drugs designed for clinical applications have reached the expected preventive or therapeutic effect so far, and combined with their significant side-effects, there is therefore an urgent need for new strategies to be developed for AD treatment. Traditional Chinese Medicine has accumulated many experiences in the treatment of dementia during thousands of years of practice; modern pharmacological studies have confirmed the therapeutic effects of many active components derived from Chinese herbal medicines (CHM)...
November 16, 2016: American Journal of Chinese Medicine
https://www.readbyqxmd.com/read/27827937/effects-of-light-intensity-on-the-growth-photosynthetic-characteristics-and-flavonoid-content-of-epimedium-pseudowushanense-b-l-guo
#5
Junqian Pan, Baolin Guo
Epimedium pseudowushanense B.L.Guo is used in traditional medicine as an aphrodisiac and to strengthen muscles and bones. Several recent reports have shown that flavonoids from Epimedium also significantly affect the treatment of breast cancer, liver cancer, and leukemia. However, few studies have examined the medicinal-ingredient yield of Epimedium, a light-demanding shade herb, under different light intensities. To investigate the effects of light intensity on medicinal-ingredient yields, Epimedium was exposed to five levels of light intensity until harvest time...
November 4, 2016: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/27792147/icariin-promotes-tendon-bone-healing-during-repair-of-rotator-cuff-tears-a-biomechanical-and-histological-study
#6
Chenyi Ye, Wei Zhang, Shengdong Wang, Shuai Jiang, Yuanbin Yu, Erman Chen, Deting Xue, Jianzhong Chen, Rongxin He
To investigate whether the systematic administration of icariin (ICA) promotes tendon-bone healing after rotator cuff reconstruction in vivo, a total of 64 male Sprague Dawley rats were used in a rotator cuff injury model and underwent rotator cuff reconstruction (bone tunnel suture fixation). Rats from the ICA group (n = 32) were gavage-fed daily with ICA at 0.125 mg/g, while rats in the control group (n = 32) received saline only. Micro-computed tomography, biomechanical tests, serum ELISA (calcium; Ca, alkaline phosphatase; AP, osteocalcin; OCN) and histological examinations (Safranin O and Fast Green staining, type I, II and III collagen (Col1, Col2, and Col3), CD31, and vascular endothelial growth factor (VEGF)) were analyzed two and four weeks after surgery...
October 25, 2016: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/27778023/icariin-protects-against-mpp-induced-neurotoxicity-in-mes23-5-cells
#7
Ai-Li Xu, Ming-Chun Jiang, Xiao-Han Chen, Wen-Fang Chen
Icariin is the major bioactive component of Epimedium and has been demonstrated to be a potential drug for age-related diseases. The present study was aimed to investigate the neuroprotective properties of icariin against 1-methyl-4-phenylpyridinium ion (MPP(+))-induced neurotoxicity in MES23.5 cells and the possible mechanisms. MTT assay showed that treatment with MPP(+) attenuated the cell viability in a dose-dependent manner in MES23.5 cells. Icariin pretreatment resulted in an enhancement of survival. Immunocytochemistry analysis revealed that icariin treatment attenuated MPP(+)-induced loss of tyrosine hydroxylase (TH) positive cells...
October 25, 2016: Sheng Li Xue Bao: [Acta Physiologica Sinica]
https://www.readbyqxmd.com/read/27770387/primary-cilium-is-required-for-the-stimulating-effect-of-icaritin-on-osteogenic-differentiation-and-mineralization-of-osteoblasts-in-vitro
#8
X-N Ma, C-X Ma, W-G Shi, J Zhou, H-P Ma, Y-H Gao, C J Xian, K-M Chen
OBJECTIVE: Icaritin, one effective metabolite of Herba Epimedii-derived flavonoid icariin, has a strong osteogenic activity. However, its action mechanism remains unclear. Since primary cilia have been shown to play a pivotal role in regulating the osteogenesis, we hypothesized primary cilia are indispensable in mediating icaritin osteogenic effect. MATERIALS AND METHODS: Primary rat calvarial osteoblasts were transfected with siRNA1 targeting intraflagellar transport protein 88 (IFT88), a protein required for ciliogenesis, to prevent formation of primary cilium and were treated with 10(-6) M icaritin...
October 21, 2016: Journal of Endocrinological Investigation
https://www.readbyqxmd.com/read/27764755/icariin-promotes-osteogenic-differentiation-of-rat-bone-marrow-stromal-cells-by-activating-the-er%C3%AE-wnt-%C3%AE-catenin-signaling-pathway
#9
QiuShi Wei, Jin Zhang, GuoJu Hong, ZhenQiu Chen, WeiMin Deng, Wei He, Mei Hui Chen
Icariin, the main effective component of Herba Epimedii, has been identified to regulate the osteogenic differentiation of rat bone marrow stromal cells (rBMSCs) and have potential application in preventing bone loss and promoting bone regeneration. However, the underlying signaling pathway of its osteogenic effect remains unclear. Here, we investigated whether icariin could promote osteogenesis of rBMSCs through modulating the estrogen receptor alpha (ERα) and Wnt/β-catenin signaling pathways, which implicated in rBMSCs osteogenesis...
October 17, 2016: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/27721833/slowly-delivered-icariin-allogeneic-bone-marrow-derived-mesenchymal-stem-cells-to-promote-the-healing-of-calvarial-critical-size-bone-defects
#10
Tianlin Liu, Xin Zhang, Yuan Luo, Yuanliang Huang, Gang Wu
Bone tissue engineering technique is a promising strategy to repair large-volume bone defects. In this study, we developed a 3-dimensional construct by combining icariin (a small-molecule Chinese medicine), allogeneic bone marrow-derived mesenchymal stem cells (BMSCs), and a siliceous mesostructured cellular foams-poly(3-hydroxybutyrate-co-3-hydroxyhexanoate) (SMC-PHBHHx) composite scaffold. We hypothesized that the slowly released icariin could significantly promote the efficacy of SMC-PHBHHx/allogeneic BMSCs for repairing critical-size bone defects in rats...
2016: Stem Cells International
https://www.readbyqxmd.com/read/27713029/colon-targeted-oral-drug-delivery-system-based-on-alginate-chitosan-microspheres-loaded-with-icariin-in-the-treatment-of-ulcerative-colitis
#11
Qiang-Song Wang, Gui-Fang Wang, Jie Zhou, Li-Na Gao, Yuan-Lu Cui
In recent years, oral colon specific drug delivery system has been paid more attention in the treatment of inflammatory bowel disease (IBD). As the special pH condition in gastrointestinal tract, the challenge for treatment of IBD was that the colon drug delivery system should endure the low pH in stomach and release drugs quickly in high pH in colon. Icariin with the poor solubility and low bioavailability limited the treatment of many diseases in clinic. In this study, the protective mechanism of alginate-chitosan microspheres loaded with icariin were investigated with trinitrobenzene sulfonic acid (TNBS)/ethanol induced colonic mucosal injury in rats...
October 3, 2016: International Journal of Pharmaceutics
https://www.readbyqxmd.com/read/27667512/epimedium-koreanum-nakai-and-its-main-constituent-icariin-suppress-lipid-accumulation-during-adipocyte-differentiation-of-3t3-l1-preadipocytes
#12
Yunk-Yung Han, Mi-Young Song, Min-Sub Hwang, Ji-Hye Hwang, Yong-Ki Park, Hyo-Won Jung
Obesity is associated with a number of metabolic abnormalities such as type 2 diabetes and has become a major health problem worldwide. In the present study, we investigated the effects of Epimedium koreanum Nakai (Herba Epimedii, HE) and its main constituent icariin on the adipocyte differentiation in 3T3-L1 preadipocytes. HE extract and icariin significantly reduced lipid accumulation and suppressed the expressions of PPARγ, C/EBPα, and SREBP-1c in 3T3-L1 adipocytes. They also inhibited fatty acid synthase (FAS), acyl-Co A synthase (ACS1), and perilipin...
September 2016: Chinese Journal of Natural Medicines
https://www.readbyqxmd.com/read/27659301/anti-ageing-active-ingredients-from-herbs-and-nutraceuticals-used-in-traditional-chinese-medicine-pharmacological-mechanisms-and-implications-for-drug-discovery
#13
REVIEW
Chun-Yan Shen, Jian-Guo Jiang, Li Yang, Da-Wei Wang, Wei Zhu
Ageing, an unanswered question in the medical field, is a multifactorial process that results in a progressive functional decline in cells, tissues and organisms. Although it is impossible to prevent ageing, slowing down the rate of ageing is entirely possible to achieve. Traditional Chinese medicine (TCM) is characterized by the nourishing of life and its role in anti-ageing is getting more and more attention. This article summarizes the work done on the natural products from TCM that are reported to have anti-ageing effects, in the past two decades...
September 23, 2016: British Journal of Pharmacology
https://www.readbyqxmd.com/read/27649234/the-anticancer-properties-of-herba-epimedii-and-its-main-bioactive-componentsicariin-and-icariside-ii
#14
REVIEW
Meixia Chen, Jinfeng Wu, Qingli Luo, Shuming Mo, Yubao Lyu, Ying Wei, Jingcheng Dong
Cancer is one of the leading causes of deaths worldwide. Compounds derived from traditional Chinese medicines have been an important source of anticancer drugs and adjuvant agents to potentiate the efficacy of chemotherapeutic drugs and improve the side effects of chemotherapy. Herba Epimedii is one of most popular herbs used in China traditionally for the treatment of multiple diseases, including osteoporosis, sexual dysfunction, hypertension and common inflammatory diseases. Studies show Herba Epimedii also possesses anticancer activity...
2016: Nutrients
https://www.readbyqxmd.com/read/27648597/bone-mass-improved-effect-of-icariin-for-postmenopausal-osteoporosis-in-ovariectomy-induced-rats-a-meta-analysis-and-systematic-review
#15
Jin-Hai Xu, Min Yao, Jie Ye, Guo-Dong Wang, Jing Wang, Xue-Jun Cui, Wen Mo
OBJECTIVE: Ovariectomy (OVX)-induced rats are the most frequently used animal model to research postmenopausal osteoporosis. Our objective was to summarize and critically assess the bone mass improved effect of icariin (ICA) for treatment of postmenopausal osteoporosis in an OVX-induced rat model. METHODS: The PUBMED, EMBASE, and Chinese databases were searched from their inception date to February 2015. Two reviewers independently selected animal studies that evaluated the bone mass improved effect of ICA compared with control in OVX-induced rats...
October 2016: Menopause: the Journal of the North American Menopause Society
https://www.readbyqxmd.com/read/27620672/metabolism-profiles-of-icariin-in-rats-using-ultra-high-performance-liquid-chromatography-coupled-with-quadrupole-time-of-flight-tandem-mass-spectrometry-and-in-vitro-enzymatic-study
#16
Tao Cheng, Tingting Sheng, Yaxiong Yi, Tong Zhang, Han Han
Icariin (ICA), the major constituent of Epimedium brevicornu Maxim, is recognized as an effective agent for the treatment of osteoporosis. In our previous report, the relatively short half-life (74min) and poor bioavailability (approximately 0.1%) of ICA in rats suggested that not only ICA itself but also its metabolites could be responsible for the observed osteoporosis treatment effect. Therefore, the present study aimed at identifying the metabolites of ICA in rat plasma, bile, urine, and feces after the administration of a single oral dose of ICA (150mg/kg)...
October 15, 2016: Journal of Chromatography. B, Analytical Technologies in the Biomedical and Life Sciences
https://www.readbyqxmd.com/read/27610184/icariin-attenuates-ogd-r-induced-autophagy-via-bcl-2-dependent-cross-talk-between-apoptosis-and-autophagy-in-pc12-cells
#17
Zhen-Tao Mo, Wen-Na Li, Yu-Rong Zhai, Qi-Hai Gong
Icariin (ICA), an active component of Epimedium brevicornum Maxim, exerts a variety of neuroprotective effects such as antiapoptosis. However, the mechanisms underlying antiapoptosis of ICA in neurons exposed to oxygen-glucose deprivation and reperfusion (OGD/R) are unclear. The B-cell lymphoma-2 (Bcl-2) protein family plays an important role in the regulation of apoptosis and autophagy through Bcl-2-dependent cross talk. Bcl-2 suppresses apoptosis by binding to Bax and inhibits autophagy by binding to Beclin-1 which is an autophagy related protein...
2016: Evidence-based Complementary and Alternative Medicine: ECAM
https://www.readbyqxmd.com/read/27595039/comparative-pharmacokinetics-and-bioavailability-of-epimedin-c-in-rat-after-intramuscular-administration-of-epimedin-c-a-combination-of-four-flavonoid-glycosides-and-purified-herba-epimedii-extract
#18
Shunjun Xu, Jiejing Yu, Liu Yang, Yaling Zhu, Shuai Sun, Zhengdi Xu
Chuan-Ke-Zhi (CKZ), a purified Herba Epimedii extract, is a potent Chinese medicine preparation whose main bioactive components are a class of flavonoid glycosides such as epimedins A, B, and C and icariin. And epimedin C is far more abundant than other flavones in this extract. This study aims to investigate the pharmacokinetic and bioavailability of epimedin C and what effects, if any, other ingredients in CKZ have on its pharmacokinetics. Epimedin C, CKZ, and a combination of epimedins A, B, and C and icariin were, respectively, administrated to rats, and then the pharmacokinetic parameters of epimedin C in the three groups were calculated and compared...
2016: Journal of Analytical Methods in Chemistry
https://www.readbyqxmd.com/read/27589718/icariin-metabolism-by-human-intestinal-microflora
#19
Hailong Wu, Mihyang Kim, Jaehong Han
Icariin is a major bioactive compound of Epimedii Herba, a traditional oriental medicine exhibiting anti-cancer, anti-inflammatory and anti-osteoporosis activities. Recently, the estrogenic activities of icariin drew significant attention, but the published scientific data seemed not to be so consistent. To provide fundamental information for the study of the icaritin metabolism, the biotransformation of icariin by the human intestinal bacteria is reported for the first time. Together with human intestinal microflora, the three bacteria Streptococcus sp...
2016: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/27566922/rapid-measurement-of-epimedin-a-epimedin-b-epimedin-c-icariin-and-moisture-in-herba-epimedii-using-near-infrared-spectroscopy
#20
Yue Yang, Xuesong Liu, Weili Li, Ye Jin, Yongjiang Wu, Jiyu Zheng, Wentao Zhang, Yong Chen
In this work, near infrared (NIR) spectroscopy was used in combination with chemometrics to determine the epimedin A, epimedin B, epimedin C, icariin, and moisture contents of Herba Epimedii. The variable selection method genetic algorithm (GA) and regression tool support vector machine (SVM) were used to improve the model performance. Four different calibration models, namely Full-PLS, GA-PLS, Full-SVM, and GA-SVM, were established, and their performances in terms of prediction accuracy and model robustness were systemically studied and compared...
January 15, 2017: Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy
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