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Biological & Pharmaceutical Bulletin

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https://www.readbyqxmd.com/read/29093325/inhibition-of-3-5-2-4-tetrahydroxychalcone-on-production-of-uric-acid-in-hypoxanthine-induced-hyperuricemic-mice
#1
Yanfen Niu, Yuanfang Zhou, Hua Lin, Li-Hui Gao, Wenyong Xiong, Huajie Zhu, Cheng-Gang Zou, Ling Li
The mechanism of 3,5,2',4'-tetrahydroxychalcone on lowing urate level is still unknown. Here we investigated the effects of 3,5,2',4'-tetrahydroxychalcone on urate levels, xanthine oxidase/xanthine dehydrogenase (XOD/XDH) activities in hypoxanthine-induced hyperuricemic mice, as well as the effects of 3,5,2',4'-tetrahydroxychalcone on the mRNA expression levels and content of phosphoribosyl pyrophosphate synthetase (PRPS), phosphoribosyl pyrophosphate amidotransferase (PRPPAT) and hypoxanthine-guanine phosphoribosyl transferase (HGPRT)...
November 1, 2017: Biological & Pharmaceutical Bulletin
https://www.readbyqxmd.com/read/29093327/chelerythrine-inhibits-human-hepatocellular-carcinoma-metastasis-in-vitro
#2
Yuanzhang Zhu, Yingyi Pan, Guibiao Zhang, Yingchun Wu, Weicai Zhong, Chunxiao Chu, Yun Qian, Guofu Zhu
Chelerythrine (CHE) is a type of benzophenanthridine alkaloid found in many herbs and is also the main alkaloid constituent of Toddalia asiatica (L.) Lam. It has been proven to have various activities including antitumor, antifungal, anti-inflammatory and anti-parasitic effects. We have previously demonstrated that CHE can inhibit proliferation and promote apoptosis in human hepatocellular carcinoma (HCC) cells. However, the effect of CHE on the metastasis of HCC and its related molecular mechanisms have yet to be validated...
October 31, 2017: Biological & Pharmaceutical Bulletin
https://www.readbyqxmd.com/read/29081457/an-aliphatic-ester-diisopropyl-sebacate-exhibited-an-adjuvant-effect-on-fluorescein-isothiocyanate-induced-contact-hypersensitivity-mouse-models
#3
Kohta Kurohane, Ayako Kimura, Rie Terasawa, Kamiyu Kobayashi, Wakana Suzuki, Takeshi Matsuoka, Yasuyuki Imai
Alternative plasticizers have become more popular due to health concerns about phthalate esters. We demonstrated that phthalate esters enhanced skin sensitization to fluorescein isothiocyanate (FITC) in mouse contact hypersensitivity models. Alternative plasticizers have not been well studied as to their effect on the immune system. We previously found that diisopropyl adipate (DIPA), an aliphatic dicarboxylic acid ester, enhanced skin sensitization to FITC. Sebacate esters are also widely used as alternative plasticizers...
October 27, 2017: Biological & Pharmaceutical Bulletin
https://www.readbyqxmd.com/read/28993551/usefulness-of-two-compartment-model-assisted-and-static-overall-inhibitory-activity-method-for-prediction-of-drug-drug-interaction
#4
Katsumi Iga, AKiko Kiriyama
Our study of drug-drug interaction (DDI) started with the clarification of unusually large DDI observed between ramelteon (RAM) and fluvoxamine (FLV). The main cause of this DDI was shown to be the extremely small hepatic availability of RAM (vFh). Traditional DDI prediction assuming the well-stirred hepatic extraction kinetic ignores the relative increase of vFh by DDI, while we could solve this problem by use of the tube model. Ultimately, we completed a simple and useful method for prediction of DDI. Currently, DDI prediction becomes more complex and difficult when examining issues such as dynamic changes in perpetrator level, inhibitory metabolites, etc...
October 7, 2017: Biological & Pharmaceutical Bulletin
https://www.readbyqxmd.com/read/28978811/tetramethylpyrazine-protects-bone-marrow-derived-mesenchymal-stem-cells-against-hydrogen-peroxide-induced-apoptosis-through-pi3k-akt-and-erk1-2-pathways
#5
Yan Fang, Lisheng Chu, Lin Li, Jun Wang, Yan Yang, Jingjing Gu, Jianping Zhang
Bone marrow-derived mesenchymal stem cells (BMSCs) transplantation is one of the new therapeutic strategies for treating ischemic stroke. However, the poor survival rate of transplanted BMSCs in ischemic tissue limits the therapeutic efficacy of this approach. Oxidative stress is a major mechanism underlying the pathogenesis of brain ischemia and has a negative impact on the survival of transplanted BMSCs. Tetramethylpyrazine (TMP) has been reported to possess potent antioxidant activity. In the present study, we aimed to investigate the protective effects of TMP pretreatment on BMSCs survival of hydrogen peroxide (H2O2)-induced apoptosis in vitro and to elucidate the potential antiapoptotic mechanisms of TMP pretreatment on BMSCs...
October 4, 2017: Biological & Pharmaceutical Bulletin
https://www.readbyqxmd.com/read/28966298/influence-of-physicochemical-properties-and-peg-modification-of-magnetic-liposomes-on-their-interaction-with-intestinal-epithelial-caco-2-cells
#6
Yusuke Kono, Hitomi Jinzai, Yota Kotera, Takuya Fujita
The present study aimed to investigate the effect of particle size (100 and 500 nm), surface charge (cationic, neutral and anionic) and polyethylene glycol (PEG) modification of magnetic liposomes on their interaction with the human intestinal epithelial cell line, Caco-2. The cellular associated amount of all the magnetic liposomes was significantly increased by the presence of a magnetic field. The highest association and internalization into Caco-2 cells was observed with magnetic cationic liposomes. Moreover, small magnetic liposomes were more efficiently associated and taken up into the cells, than large ones...
September 30, 2017: Biological & Pharmaceutical Bulletin
https://www.readbyqxmd.com/read/28966297/ginsenoside-rh2-inhibited-proliferation-by-inducing-ros-mediated-er-stress-dependent-apoptosis-in-lung-cancer-cells
#7
Guanqun Ge, Yan Yan, Hui Cai
Ginsenoside Rh2 (G-Rh2), a component extracted from roots of ginseng, exhibited anti-cancer pharmacological activities by inhibiting proliferation and inducing apoptosis in lung cancer cells. However, the mechanisms of G-Rh2 suppressing lung cancer development remained elusive. This study tried to investigate the possible mechanism involved in anti- proliferative effect of G-Rh2 in lung cancer cells. As results, G-Rh2 inhibited the proliferation of H1299 cells in a dose-dependent manner by inducing cell apoptosis...
September 30, 2017: Biological & Pharmaceutical Bulletin
https://www.readbyqxmd.com/read/28966226/2-ethylpyrazine-induces-vasodilatation-by-releasing-nitric-oxide-in-the-endothelium
#8
Hiroshi Ashigai, Emiko Ikeshima, Kumiko Koizumi, Keiko Nakashima, Mai Mizutani, Hiroaki Yajima
Oxygen transportation and regulation of some physiological processes are facilitated by blood flow. Furthermore, blood flow is regulated by various factors such as nitric oxide (NO) and the autonomic nerve system. In modern life, many people suffer from chilliness (hiesho) because of mental stress and an excessive use air-conditioning systems, which induces vasoconstriction in the peripheral skin. In this study, we focused on pyrazine derivatives, particularly compounds that are used as food flavoring materials, and investigated their effects on vascular function and blood flow...
September 29, 2017: Biological & Pharmaceutical Bulletin
https://www.readbyqxmd.com/read/28954936/different-schedule-dependent-effects-of-epigenetic-modifiers-on-cytotoxicity-by-anticancer-drugs-in-colorectal-cancer-cells
#9
Mika Hosokawa, Shota Tanaka, Kumiko Ueda, Seigo Iwakawa
Limited information is currently available on how to apply epigenetic modifiers to current colorectal cancer (CRC) chemotherapy. The purpose of this study is to clarify the schedule-dependent effects of combined treatment with conventional anticancer drugs and epigenetic modifiers in human CRC cells. Cytotoxicity in 4 CRC cell lines (SW480, HT29, SW48, and HCT116) was measured using the WST-8 assay. As epigenetic modifiers, 3 DNA methyltransferase (DNMT) inhibitors such as decitabine (DAC), azacytidine (AC), and zebularine (Zeb), and 3 histone deacetylase (HDAC) inhibitors including trichostatin A (TSA), suberoylanilide hydroxamic acid (SAHA), and valproic acid (VPA) were used...
September 28, 2017: Biological & Pharmaceutical Bulletin
https://www.readbyqxmd.com/read/28943530/prescription-optimization-and-oral-bioavailability-study-of-salvianolic-acid-extracts-w-o-w-multiple-emulsion
#10
Yanqing Song, Huan Gao, Sixi Zhang, Yue Zhang, Xiangqun Jin, Jingmeng Sun
The purpose of this study is to develop a new method of preparing salvianolic acid extracts (SAE) water-in-oil-in-water (W/O/W) multiple emulsion (ME). SAE injection is used in the treatment of brain infarct and promotion of blood circulation in China. However, the injection is not convenient, and the oral preparation has poor bioavailability. Hence, a new preparation that is convenient and stable with good biological availability is required. SAE ME was prepared by two-step emulsification method. Combined with single-factor investigation and orthogonal test, the embedding rate and centrifugal retention rate were taken as the comprehensive indexes to optimize the formulation of SAE ME...
September 23, 2017: Biological & Pharmaceutical Bulletin
https://www.readbyqxmd.com/read/28943529/quisqualis-indica-improves-benign-prostatic-hyperplasia-by-regulating-prostate-cell-proliferation-and-apoptosis
#11
Charith Ub Wijerathne, Hee-Seon Park, Hye-Yun Jeong, Ji-Won Song, Og-Sung Moon, Young-Won Seo, Young-Suk Won, Hwa-Young Son, Jong-Hwan Lim, Sung-Hum Yeon, Hyo-Jung Kwun
Quisqualis indica (QI) has been used for treating disorders such as stomach pain, constipation, and digestion problem. This study was aimed to evaluate the therapeutic efficacy of QI extract on treating benign prostatic hyperplasia (BPH) in LNCaP human prostate cancer cell line and a testosterone-induced BPH rat model. LNCaP cells were treated with QI plus testosterone propionate (TP), and androgen receptor (AR) and prostate specific antigen (PSA) expression levels were assessed by Western blotting. To induce BPH, the rats were subjected to a daily subcutaneous injection of TP (3 mg/kg) for 4 wk...
September 22, 2017: Biological & Pharmaceutical Bulletin
https://www.readbyqxmd.com/read/28943528/scopoletin-stimulates-melanogenesis-via-camp-pka-pathway-and-partially-p38-activation
#12
Dae-Sung Kim, Su-Bin Cha, Min-Cheol Park, Seol-A Park, Hye-Soo Kim, Won-Hong Woo, Yeun-Ja Mun
Scopoletin was recently shown to stimulate melanogenesis through cAMP-response element-binding protein (CREB) phosphorylation. In this study, we investigated the molecular events of melanogenesis-induced by scopoletin. After exposure to scopoletin, the protein levels of tyrosinase and tyrosianse related protein-1 (TRP-1) were significantly increased in B16F10 cells. The mRNA levels of tyrosinase and microphthalmia-associated transcription factor (MITF) were also enhanced by scopoletin. cAMP production and phosphorylation of p38 mitogen-activated protein kinase (MAPK) were increased by scopoletin treatment...
September 22, 2017: Biological & Pharmaceutical Bulletin
https://www.readbyqxmd.com/read/28867717/effects-of-tripterygium-wilfordii-hook-f-induction-therapy-to-iga-nephropathy-patients-with-heavy-proteinuria
#13
Zhen Wang, Chao Yu, Li-Na Zhou, Xin Chen
Although some new drugs have been developed, Tripterygium wilfordii Hook F.(TWHF)has the merits of relatively lower price and fewer side effects. Unfortunately, the efficacy and safety of the TWHF (especially dosage 120mg/day) in the IgA nephropathy(IgAN) are still lacking. A cohort study including 49 IgAN patients with heavy proteinuria who received induction therapy was undertaken. Patients were divided into three groups: Prednisone (PRE), conventional-dose TWHF (CTW) and double-dose TWHF (DTW). The clinical features, laboratory data, histological manifestations and outcomes of the groups were compared...
September 1, 2017: Biological & Pharmaceutical Bulletin
https://www.readbyqxmd.com/read/28855448/caffeine-has-a-synergistic-anticancer-effect-with-cisplatin-via-inhibiting-fanconi-anemia-group-d2-protein-monoubiquitination-in-hepatocellular-carcinoma-cells
#14
Yuichiro Oda, Muneaki Hidaka, Akito Suzuki
Cisplatin is an anticancer agent and induces DNA interstrand cross-links (ICLs). ICLs activate various signaling processes and induce DNA repair pathways, including the Fanconi anemia (FA) pathway. FA complementation group D2 (FANCD2) is monoubiquitinated in response to DNA damage, leading to activation of the DNA double-strand-break repair protein, RAD51. Caffeine increases the anticancer activity of cisplatin by inhibiting DNA repair; however, details of the mechanism remain unclear. We investigated the mechanism responsible for the synergistic anticancer effect of cisplatin and caffeine in HepG2 human hepatocellular carcinoma cells, focusing on the FA pathway...
August 31, 2017: Biological & Pharmaceutical Bulletin
https://www.readbyqxmd.com/read/28845027/dibutyl-phthalate-rather-than-monobutyl-phthalate-facilitates-contact-hypersensitivity-to-fluorescein-isothiocyanate-in-a-mouse-model
#15
Kohta Kurohane, Kota Sekiguchi, Erina Ogawa, Masato Tsutsumi, Yasuyuki Imai
Dibutyl phthalate (DBP) is a plasticizer used for many consumer products including cosmetics. Potential health concerns regarding DBP include reproductive and developmental toxicity, endocrine disruption and neurotoxicity. DBP is a high priority chemical as to reduction of exposure of children to it. Through reproductive toxicity studies, monobutyl phthalate (MBP) has been proposed to be the active metabolite derived from DBP. We previously demonstrated that DBP activates transient receptor potential ankyrin 1 (TRPA1) cation channels expressed on sensory neurons...
August 26, 2017: Biological & Pharmaceutical Bulletin
https://www.readbyqxmd.com/read/28804104/%C3%AE-cyperone-inhibits-pma-induced-epcr-shedding-through-pkc-pathway
#16
Yu Ma, Yi Zhao, Ran Zhang, Xiaoxia Liang, Zhongqiong Yin, Yi Geng, Gang Shu, Xu Song, Yuanfeng Zou, Lixia Li, Lizi Yin, Guizhou Yue, Yinglun Li, Gang Ye, Changliang He
α-Cyperone, a sesquiterpene compound represents 25.23% of the total oil and is the most abundant compound in Cyperus rotundus oil. Endothelial cell protein C receptor (EPCR) is a main member in protein C (PC) anti-coagulation system. EPCR could be shed from cell surface, and is mediated by tumor necrosis factor-α converting enzyme (TACE). Nothing that EPCR is a marker of vascular barrier integrity in vascular inflammatory disease and takes part in systemic inflammatory disease. In this study, we investigated whether α-cyperone could inhibit EPCR shedding...
October 1, 2017: Biological & Pharmaceutical Bulletin
https://www.readbyqxmd.com/read/28781292/comparison-of-the-benefit-feeling-rate-based-on-the-sho-of-otc-kakkonto-cold-remedy-and-cold-remedy-with-kakkonto-combination-product
#17
Mitsuyoshi Okita, Yuki Yayoshi, Kousuke Ohara, Akio Negishi, Hayato Akimoto, Naoko Inoue, Sachihiko Numajiri, Shigeru Ohshima, Seiichi Honma, Shinji Oshima, Daisuke Kobayashi
Kakkonto (KK), a traditional Japanese Kampo formulation for cold and flu, is generally sold as an OTC pharmaceuticals used for self-medication. Kampo formulations should be used according to the Sho-symptoms of Kampo medicine. These symptoms refer to the subjective symptoms themselves. Although with OTC pharmaceuticals, this is often not the case. We surveyed the relationship of agreement of Sho with the benefit feeling rate (BFR) of patients who took KK (n=555), cold remedies with KK (CK, n=315), and general cold remedies (GC, n=539) using internet research...
October 1, 2017: Biological & Pharmaceutical Bulletin
https://www.readbyqxmd.com/read/28768938/a-novel-molecular-model-of-plant-lectin-induced-programmed-cell-death-in-cancer
#18
Zheng Shi, Wen-Wen Li, Yong Tang, Li-Jia Cheng
Plant lectin, a class of highly diverse non-immune origin and carbohydrate-binding proteins, has been reported to specially induce cancer cell through programmed cell death (PCD) pathways (apoptosis and/or autophagy), shedding lights on screening promising anti-cancer candidate agent for further therapeutic trials. However, the complicated molecular mechanisms by which plant lectins induced the programmed death of tumor cells, have not yet been fully clarified. Here, we summarized a novel model, based on vast amount of research, by which plant lectins eliminate various types of cancer cells via three major pathways, including a) direct ribosome inactivating, b) endocytosis-dependent mitochondrial dysfunction and c) sugar-containing receptors binding...
October 1, 2017: Biological & Pharmaceutical Bulletin
https://www.readbyqxmd.com/read/28747591/assessment-of-genetic-and-chemical-variability-in-curcumae-longae-rhizoma-curcuma-longa-based-on-dna-barcoding-markers-and-hplc-fingerprints
#19
Zhonggang Duan, Wei Song, Kuan Chen, Xue Qiao, Min Ye
Curcumae Longae Rhizoma (Curcuma longa L.) is an important traditional Chinese medicine with multiple beneficial effects. To elucidate the genetic and chemical differences among Curcumae Longae Rhizoma samples, three DNA barcoding markers (rbcL, matK, and ITS-LSU D1/D3) and HPLC fingerprinting were employed in this study. The discriminatory power of rbcL and matK was low, as they only detected one sequence type that showed 100% similarity with more than 20 congeneric species in the Barcode of Life Data Systems (BOLD) database...
October 1, 2017: Biological & Pharmaceutical Bulletin
https://www.readbyqxmd.com/read/28740043/morphine-can-inhibit-the-growth-of-breast-cancer-mcf-7-cells-by-arresting-the-cell-cycle-and-inducing-apoptosis
#20
Yanhua Chen, Yi Qin, Li Li, Jing Chen, Xu Zhang, Yubo Xie
Morphine is widely used for relieving cancer pain in patients with advanced cancer. However, whether morphine can suppress or promote the progression of cancer in breast cancer patients receiving morphine analgesia remains unclear. Therefore, we used an in vitro model treated with morphine and naloxone to investigate the effects of morphine on breast cancer cell line MCF-7. MCF-7 cells were cultured with different concentrations (0.01 to 10 µM) of morphine at 12th, 24th, 36th, 48th, 60th and 72nd hours. Then, cell viability was measured through the 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assay, and cell cycle and apoptosis assays were detected by flow cytometry (FCM)...
October 1, 2017: Biological & Pharmaceutical Bulletin
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