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https://www.readbyqxmd.com/read/28205294/simultaneous-determination-of-the-bioactive-components-in-rat-plasma-by-uplc-ms-ms-and-application-in-pharmacokinetic-studies-after-oral-administration-of-radix-scutellariae-extract
#1
Jin-Hua Tao, Jun Xu, Shu Jiang, Yong Ling, Dong-Geng Wang
A highly sensitive and rapid ultraperformance liquid chromatography-tandem mass spectrometry (UPLC-MS/MS) has been developed and validated for simultaneous quantification of the four main bioactive compounds, i.e., baicalin, baicalein, wogonoside and wogonin in rat plasma after oral administration of Radix scutellariae extract. Clarithromycin was used as an internal standard (IS). Plasma samples were processed by protein precipitation with methanol. The separation was performed on an Acquity BEH C18 column (100 mm × 2...
February 16, 2017: Biomedical Chromatography: BMC
https://www.readbyqxmd.com/read/28184027/baicalin-promotes-the-bacteriostatic-activity-of-lysozyme-on-s-aureus-in-mammary-glands-and-neutrophilic-granulocytes-in-mice
#2
Xuejiao Gao, Mengyao Guo, Zecai Zhang, Peng Shen, Zhengtao Yang, Naisheng Zhang
Staphylococcus aureus causes mastitis as a result of community-acquired or nosocomial infections. Lysozyme (LYSO) is an enzyme that is upregulated in many organisms during the innate immune response against infection by bacterial pathogens. Baicalin is a bioactive flavonoid that can bind to enzymes, often to potentiate their effect. Here we tested the effects of baicalin on the activity of LYSO using the S. aureus mastitis mouse model and neutrophilic granulocyte model of S. aureus infection. In our experiments, S...
February 8, 2017: Oncotarget
https://www.readbyqxmd.com/read/28182699/bifunctional-effects-of-o-methylated-flavones-from-scutellaria-baicalensis-georgi-on-melanocytes-inhibition-of-melanin-production-and-intracellular-melanosome-transport
#3
Michiko Kudo, Kumiko Kobayashi-Nakamura, Kentaro Tsuji-Naito
The growing interest in skin lightening has recently renewed attention on the esthetic applications of Chinese herbal medicine. Although Scutellaria baicalensis Georgi is used for antipyretic and antiinflammatory purposes, its whitening effect remains unclear. This study reports three major findings: (1) S. baicalensis has a potent inhibitory effect on melanogenesis; (2) wogonin and its glycoside are the active components of S. baicalensis; and (3) O-methylated flavones from S. baicalensis, such as wogonin, inhibit intracellular melanosome transport...
2017: PloS One
https://www.readbyqxmd.com/read/28158928/baicalin-positively-regulates-osteoclast-function-by-activating-mapk-mitf-signalling
#4
Li Lu, Li Rao, Huanhuan Jia, Jun Chen, Xingyan Lu, Guozhu Yang, Qingnan Li, Kenneth Ka Ho Lee, Li Yang
Activation of osteoblasts in bone formation and osteoclasts in bone resorption is important during the bone fracture healing process. There has been a long interest in identifying and developing a natural therapy for bone fracture healing. In this study, we investigated the regulation of osteoclast differentiation by baicalin, which is a natural molecule extracted from Eucommiaulmoides (small tree native to China). It was determined that baicalin enhanced osteoclast maturation and bone resorption activity in a dose-dependent manner...
February 3, 2017: Journal of Cellular and Molecular Medicine
https://www.readbyqxmd.com/read/28135651/baicalin-and-chrysin-mixture-imparts-cyto-protection-against-methylglyoxal-induced-cytotoxicity-and-diabetic-tubular-injury-by-modulating-rage-oxidative-stress-and-inflammation
#5
Jyotsna Singh, Bhushan P Chaudhari, Poonam Kakkar
Protective effect of mixture of flavonoids baicalin and chrysin (BCH) was studied against methylglyoxal (MG, a precursor of AGEs) induced cytotoxicity in NRK 52E kidney epithelial cells. Flow cytometry and microscopic analysis showed increased ROS generation, compromised antioxidant status, depolarization of mitochondria and apoptosis in MG stressed cells which were significantly transformed (p≤0.01) during BCH co-treatment. In vivo studies in streptozotocin induced diabetic rats increased protein levels of iNOS, protein kinase C (PKC) and decreased IκB which was modulated by oral BCH treatment (75mg baicalin and 10mg chrysin/kg b...
January 23, 2017: Environmental Toxicology and Pharmacology
https://www.readbyqxmd.com/read/28123992/sodium-dithionite-enhanced-quality-of-radix-scutellariae-through-modification-of-secondary-metabolism
#6
Guo Huimin, Fu Xiaoying, Du Hongwei, Cong Wei, Meng Xiangcai
INTRODUCTION: The quality of radix scutellariae is particularly associated with environmental stresses, but detailed mechanisms remained unclear. Plant under unfavorable situation generates redundant reactive oxygen species (ROS), and ROS can modify the secondary metabolism. The varied quality of radix scutellariae could be explained by ROS. MATERIALS AND METHODS: .004, 0.4, and 40 μmol/L of sodium dithionite (Na2S2O4), a material producing ROS, were applied to Scutellaria baicalensis to mimic unfavorable situation...
October 2016: International Journal of Pharmaceutical Investigation
https://www.readbyqxmd.com/read/28123719/the-pharmacokinetics-of-tiangou-antihypertensive-capsule-in-rat-in-vivo
#7
Ji-Zheng Song, Ling-Jun Li, Li Ji, Li Shun, Yan Rui
The aim of the study was to examine the effect of complex prescription on the pharmacokinetics of baicalin, rhynochophylline and gastrodin in Tiangou antihypertensive capsule. After administration, rat plasma was collected at different time-points. High-performance liquid chromatography was used to determine the content of baicalin, rhynochophylline and gastrodin in plasma. Two peaks occurred in the baicalin concentration-time curve. No significant difference was found for the peak concentration time (tmax) and area under concentration-time curve (AUC) of baicalin between the complex prescription and baicalin groups...
January 2017: Biomedical Reports
https://www.readbyqxmd.com/read/28118579/simultaneous-determination-of-five-active-components-in-the-chinese-patent-medicine-niuhuang-jiangya-pill-by-hplc-ms-ms
#8
Shan Xiong, Shanshan Lei
Niuhuang Jiangya (NHJY) pill is one of the well-known Chinese patent medicines in China used in the treatment of high blood pressure. The primary purpose of this study was to establish and validate a method using HPLC with tandem MS for the quality evaluation of NHJY pill through simultaneous determination of the following five active components: baicalin, paeoniflorin, astragaloside IV, ferulic acid, and emodin. Chromatographic separation was carried out on a Hypersil GOLD HPLC C18 column (50 × 4...
December 16, 2016: Journal of AOAC International
https://www.readbyqxmd.com/read/28111380/baicalin-protects-against-tnf-%C3%AE-induced-injury-by-down-regulating-mir-191a-that-targets-the-tight-junction-protein-zo-1-in-iec-6-cells
#9
Li Wang, Ren Zhang, Jian Chen, Qihui Wu, Zaoyuan Kuang
TNF-α plays an important role in the developing process of inflammatory bowel disease. Tight junction protein zonula occludens-1 (ZO-1), one of epithelial junctional proteins, maintains the permeability of intestinal barrier. The objective of this study was to investigate the mechanism of the protective effect of baicalin on TNF-α-induced injury and ZO-1 expression in intestinal epithelial cells (IECs). We found that baicalin pretreatment significantly improved cell viability and cell migration following TNF-α stimulation...
January 20, 2017: Biological & Pharmaceutical Bulletin
https://www.readbyqxmd.com/read/28107925/green-synthesized-co-nanoparticles-doped-amino-graphene-modified-electrode-and-its-application-towards-determination-of-baicalin
#10
Kai Sheng, Lu Wang, Huichao Li, Lina Zou, Baoxian Ye
The present paper reported an one-pot synthesis of Co nanoparticles doped amino-graphene nanocomposites (Co-amino-Gr), involving in situ generation of Co nanoparticles (NPs). The simultaneous reduction of graphene oxide (GO) and Co(2+) to produce Co-amino-Gr had been achieved under mild reaction conditions using an environmentally benign reducing agent, glycine. By combining the merits of amino-Gr and the Co NPs, a highly sensitive electrochemical sensor was erected to detect baicalin based on the Co-amino-Gr nanocomposites...
March 1, 2017: Talanta
https://www.readbyqxmd.com/read/28105139/baicalin-promotes-cholesterol-efflux-by-regulating-the-expression-of-sr-bi-in-macrophages
#11
Renchao Yu, Yuexia Lv, Juanling Wang, Nana Pan, Rui Zhang, Xiaxia Wang, Haichu Yu, Lijuan Tan, Yunhe Zhao, Bo Li
Intake of a high dosage of baicalin has previously been shown to attenuate hyperlipidemia induced by a high-fat diet. Baicalin functions as an activator of peroxisome proliferator-activated receptor-γ (PPAR-γ), which is the key regulator of reverse cholesterol transport (RCT). The present study aimed to test the hypothesis that baicalin could promote cholesterol efflux in macrophages through activating PPAR-γ. Phorbol 12-myristate 13-acetate-stimulated THP-1 cells were treated with oxidized low-density lipoprotein and ((3)H)-cholesterol for 24 h, and the effects of baicalin on cholesterol efflux were evaluated in the presence of apolipoprotein A-1 (ApoA-1), or high-density lipoprotein subfraction 2 (HDL2) or subfraction 3 (HDL3)...
December 2016: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/28096670/lung-targeting-drug-delivery-system-of-baicalin-loaded-nanoliposomes-development-biodistribution-in-rabbits-and-pharmacodynamics-in-nude-mice-bearing-orthotopic-human-lung-cancer
#12
Yumeng Wei, Jing Liang, Xiaoli Zheng, Chao Pi, Hao Liu, Hongru Yang, Yonggen Zou, Yun Ye, Ling Zhao
The present study aims to develop a kind of novel nanoliposomes for the lung-targeting delivery system of baicalin as a Chinese medicine monomer. Baicalin-loaded nanoliposomes were prepared by the effervescent dispersion and lyophilized techniques. Baicalin-loaded nanoliposomes had an average particle size of 131.7±11.7 nm with 0.19±0.02 polydispersity index, 82.8%±1.24% entrapment efficiency and 90.47%±0.93% of yield and sustaining drug release effect over 24 h and were stable for 12 months at least. In vitro no hemolytic activity was observed for the experimental drug concentration...
2017: International Journal of Nanomedicine
https://www.readbyqxmd.com/read/28035370/induced-overexpression-of-cd44-associated-with-resistance-to-apoptosis-on-dna-damage-response-in-human-head-and-neck-squamous-cell-carcinoma-cells
#13
Emika Ohkoshi, Naoki Umemura
CD44 is a marker of cancer stem cells in head and neck squamous cell carcinoma, and CD44 expression is related to prognosis in cancer patients. We examined whether herbal medicine components affect CD44 expression and induce cancer cell apoptosis. Baicalin enhanced apoptosis with no effect on CD44 levels, while baicalein did not enhance apoptosis and upregulated CD44 in head and neck squamous cell carcinoma. Furthermore, baicalein induced phosphorylation of CHK1, as a marker of DNA damage response to S-to-G2/M phase arrest...
February 2017: International Journal of Oncology
https://www.readbyqxmd.com/read/28013315/baicalin-inhibits-renal-cell-apoptosis-and-protects-against-acute-kidney-injury-in-pediatric-sepsis
#14
Yanping Zhu, Yanxia Fu, Hairong Lin
BACKGROUND Pediatric sepsis has high morbidity in children, may lead to acute kidney injury (AKI), and further aggravate the disease. Baicalin is a kind of flavonoid in Scutellaria baicalensis Georgi and has been reported to protect against several diseases, but its roles in septic AKI remain unclear. This study aimed to uncover the effects of baicalin in AKI during pediatric sepsis. MATERIAL AND METHODS Blood urea nitrogen (BUN) and serum creatinine (Cr) levels were detected in 50 pediatric patients, who underwent basic therapy with or without baicalin adjunctive therapy...
December 25, 2016: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
https://www.readbyqxmd.com/read/28002421/baicalin-down-regulates-il-1%C3%AE-stimulated-extracellular-matrix-production-in-nasal-fibroblasts
#15
Jae-Min Shin, Ju-Hyung Kang, Seoung-Ae Lee, Il-Ho Park, Heung-Man Lee
PURPOSE: Baicalin, a Chinese herbal medicine, has anti-fibrotic and anti-inflammatory effects. The aims of present study were to investigate the effects of baicalin on the myofibroblast differentiation, extracellular matrix production, migration, and collagen contraction of interleukin (IL)-1β-stimulated nasal fibroblasts and to determine the molecular mechanism of baicalin in nasal fibroblasts. METHODS: Nasal fibroblasts were isolated from the inferior turbinate of patients...
2016: PloS One
https://www.readbyqxmd.com/read/27992235/effects-of-baicalin-on-alveolar-fluid-clearance-and-%C3%AE-enac-expression-in-rats-with-lps-induced-acute-lung-injury
#16
Jia Deng, Dao-Xin Wang, Ai-Ling Liang, Jing Tang, Da-Kai Xiang
Baicalin has been reported to attenuate lung edema in the process of lung injury. However, the effect of baicalin on alveolar fluid clearance (AFC) and epithelial sodium channel (ENaC) expression has not been tested. Sprague-Dawley rats were anesthetized and intratracheally injected with either 1 mg/kg lipopolysaccharide (LPS) or saline vehicle. Baicalin with various concentrations (10, 50, and 100 mg/kg) was injected intraperitoneally 30 min before administration of LPS. Then lungs were isolated for measurement of AFC, cyclic adenosine monophosphate (cAMP) level, and cellular localization of α-ENaC...
August 31, 2016: Canadian Journal of Physiology and Pharmacology
https://www.readbyqxmd.com/read/27960146/exploring-the-chemopreventive-properties-and-perspectives-of-baicalin-and-its-aglycone-baicalein-in-solid-tumors
#17
REVIEW
Wei-Yi Gong, Zheng-Xiao Zhao, Bao-Jun Liu, Lin-Wei Lu, Jing-Cheng Dong
Solid tumors contain a huge mass of malignant tumors other than hematological malignancies. Novel therapies based on bio-safe agents against solid tumors are urgently required. Baicalin and its aglycone baicalein, the major bioactive flavones derived from Scutellaria baicalensis, have potential roles in the management of cancer. The chemopreventive properties governed by baicalin and baicalein were multi-fold, via apoptosis induction, autophagy triggering, cell cycle arrest, inhibition of 12-lipoxygenase and metastasis suppression...
December 1, 2016: European Journal of Medicinal Chemistry
https://www.readbyqxmd.com/read/27928227/baicalin-and-geniposide-inhibit-the-development-of-atherosclerosis-by-increasing-wnt1-and-inhibiting-dickkopf-related-protein-1-expression
#18
Bin Wang, Ping-Ping Liao, Li-Hua Liu, Xin Fang, Wei Li, Si-Ming Guan
BACKGROUND: Our previous study showed that the combined Chinese herbs containing scutellaria baicalensis georgi and gardenia jasminoids ellis inhibited atherosclerosis. In this study, we sought to determine if baicalin and geniposide could inhibit atherosclerosis through Wnt1 and dickkopf-related protein-1 (DKK1). METHODS: The wild-type and ApoE(-/-) mice were treated with baicalin, geniposide, and baicalin plus geniposide daily by gavage for 12 weeks. Blood lipid levels were measured with an automatic biochemistry analyzer...
October 2016: Journal of Geriatric Cardiology: JGC
https://www.readbyqxmd.com/read/27927057/treatment-effect-of-a-flavonoid-prescription-on-duck-virus-hepatitis-by-its-hepatoprotective-and-antioxidative-ability
#19
Yun Chen, Ling Zeng, Yu Lu, Yulan Yang, Meiyun Xu, Yixuan Wang, Jiaguo Liu
CONTEXT: Duck virus hepatitis (DVH) caused by duck hepatitis A virus type 1 (DHAV-1) is an acute and lethal disease of young ducklings. However, there is still no effective drug to treat DVH. OBJECTIVE: This study assessed the curative effect on DVH of a flavonoid prescription baicalin-linarin-icariin-notoginsenoside R1 (BLIN) as well as the hepatoprotective and antioxidative effects of BLIN. MATERIALS AND METHODS: MTT method was used to test the anti-DHAV-1 ability of BLIN in vitro...
December 2017: Pharmaceutical Biology
https://www.readbyqxmd.com/read/27918833/effects-of-lead-phytochemicals-of-radix-scutellariae-on-acanthamoeba
#20
Pauline Cho, Guangsen Shi, Maurice Yap, Maureen V Boost
Purpose: Acanthamoeba keratitis (AK), which is associated with noncompliant use of contact lenses, remains difficult to treat due to delayed diagnosis and paucity of therapeutic agents. Although improvements in activity against Acanthamoeba infection have been achieved in disinfecting solutions for soft contact lenses, such modifications have not been extended to those for special rigid gas permeable (RGP) contact lenses, which are increasingly used for myopia control in children. Phytochemicals present in herbs used for traditional Chinese medicine may be effective as therapeutic or preventive agents...
December 1, 2016: Investigative Ophthalmology & Visual Science
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