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Biological & Pharmaceutical Bulletin

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https://www.readbyqxmd.com/read/28321036/a-highly-potent-and-selective-histone-deacetylase-6-inhibitor-prevents-dss-induced-colitis-in-mice
#1
Ting Liu, Renping Wang, Haojie Xu, Yunlong Song, Yunpeng Qi
Inflammatory bowel disease (IBD) is a refractory illness with remarkably increasing incidence rate all over the world. However, no desirable treatment scheme is available. Therefore, research and development of new drugs for treating IBD are urgently needed. Histone deacetylase 6 (HDAC6) is considered to be a pro-inflammatory factor, thus the inhibitors specifically-targeting HDAC6 may find their way in IBD treatment. In this study, we evaluated the anti-inflammatory activity of a novel potent and selective HDAC6 inhibitor, LTB2, in dextran sulfate sodium (DSS)-induced colitis mouse model...
March 17, 2017: Biological & Pharmaceutical Bulletin
https://www.readbyqxmd.com/read/28260722/high-resolution-magic-angle-spinning-1-h-nmr-spectroscopy-based-metabolic-profiling-of-hippocampal-tissue-in-rats-with-depression-like-symptoms
#2
Hayato Akimoto, Shinji Oshima, Kousuke Ohara, Akio Negishi, Hanako Hiroyama, Tadashi Nemoto, Daisuke Kobayashi
Depressive disorders cause large socioeconomic effects influencing not only the patients themselves but also their family and broader community as well. To better understand the physiologic factors underlying depression, in this study, we performed metabolomics analysis, an omics technique that comprehensively analyzes small molecule metabolites in biological samples. Specifically, we utilized high-resolution magic-angle spinning-(1)H NMR (HRMAS-(1)H NMR) spectroscopy to comprehensively analyze the changes in metabolites in the hippocampal tissue of rats exposed to chronic stress (CS) via multi-step principal component analysis (multi-step PCA)...
March 4, 2017: Biological & Pharmaceutical Bulletin
https://www.readbyqxmd.com/read/28260721/the-characteristics-of-hepatic-gs%C3%AE-camp-axis-in-hshf-diet-fed-obese-insulin-resistance-rats-and-genetic-diabetic-mice
#3
Nina Xue, Chen Wei, Lihong Zhang, Hongying Liu, Xiaojuan Wang, Lili Wang
Stimulatory G protein α-subunit (Gsα) mediated cyclic adenosine monophosphate (cAMP) signal is required for elevated hepatic glucose production (HGP) in diabetic patients. However, it remains obscure of the exact characteristics of hepatic Gsα-cAMP signal axis (including Gsα, glucagon receptor, β2-adrenergic receptor, cAMP, phosphoenolpyruvate carboxykinase and glucose-6-phosphatase) in insulin resistance (IR) and type 2 diabetes mellitus (T2DM). In current study, we investigated the changing characteristics of hepatic Gsα-cAMP signal axis and blood glucose in high-sugar-high-fat (HSHF)-diet-induced IR wistar rats and db/db diabetic mice...
March 4, 2017: Biological & Pharmaceutical Bulletin
https://www.readbyqxmd.com/read/28228616/transcriptional-mechanism-of-the-%C3%AE-4-galactosyltransferase-4-gene-in-sw480-human-colon-cancer-cell-line
#4
Atena Sugiyama, Naomichi Fukushima, Takeshi Sato
Increased expression of β4-galactosyltransferase (β4GalT) 4 has been shown to be associated with metastatic ability and poor prognosis of colon cancer cells. To solve the up-regulation of β4GalT4 in colon cancer cells at transcriptional level, we examined the transcriptional mechanism of the β4GalT4 gene in SW480 human colon cancer cell line. Luciferase assay using the deletion constructs revealed that the promoter activity of the β4GalT4 gene is associated with the region between nucleotides -122 and -55 relative to the transcriptional start site, which contained one Sp1-binding site...
February 23, 2017: Biological & Pharmaceutical Bulletin
https://www.readbyqxmd.com/read/28216512/risk-factors-for-treatment-discontinuation-caused-by-adverse-events-when-using-telaprevir-peginterferon-and-ribavirin-to-treat-chronic-hepatitis-c-a-real-world-retrospective-cohort-study
#5
Kazuki Ide, Yohei Kawasaki, Ryo Iketani, Naohiko Masaki
In this study, a nationwide database was used to identify the risk factors for treatment discontinuation due to adverse events during telaprevir, peginterferon, and ribavirin (T/PR) treatment, and estimate the increase in the occurrence of adverse events when patients have multiple risk factors at the same time. The risk factors were identified using univariate logistic regression analysis, and a Cochran-Armitage trend test was used to analyze the correlation between the number of risk factors and treatment discontinuation due to adverse events...
February 17, 2017: Biological & Pharmaceutical Bulletin
https://www.readbyqxmd.com/read/28202839/cost-outcome-description-of-peg-ifn-%C3%AE-2b-rbv-for-hepatitis-c-results-based-on-the-interferon-database
#6
Maiko Akutagawa, Yohei Kawasaki, Atsuko Kawasaki, Kazuki Ide, Hiroshi Yamada, Naohiko Masaki
Economic evaluation of drugs is used in decision-making on medical care and public policy. Recently, real-world data (RWD) have been used in the analysis. In this study, we discuss the risk and benefits of using RWD for economic evaluation. We conducted a cost-outcome description with RWD from a nationwide registry providing information on hepatitis treatment in Japan and estimated the utility of the analysis. We evaluated the cost-outcome description of peginterferon plus ribavirin (PEG-IFN-α2b + RBV) treatment in hepatitis C virus (HCV)-infected patients...
February 15, 2017: Biological & Pharmaceutical Bulletin
https://www.readbyqxmd.com/read/28190857/protective-effects-of-tyrosol-against-lps-induced-acute-lung-injury-via-inhibiting-nf-%C3%AE%C2%BAb-and-ap-1-activation-and-activating-the-ho-1-nrf2-pathways
#7
Wen-Chen Wang, Yan-Min Xia, Bo Yang, Xiang-Ni Su, Jia-Kuan Chen, Wei Li, Tao Jiang
Tyrosol (Tyr) is a natural antioxidant that displays anti-oxidant and anti-inflammatory properties. The present study aimed to investigate the effect and mechanism of Tyr on lipopolysaccharide (LPS)-induced acute lung injury (ALI). In a mouse model, we found that pretreatment with Tyr significantly improved survival rate, attenuated lung permeability, ameliorated histopathological alterations, reduced expression of the inflammatory mediators and improved expression of the antioxidant enzyme. Further study revealed that Tyr markedly inhibited nuclear factor-κB (NF-κB) and activator protein-1 (AP-1) activation at both in vivo and in vitro levels...
February 10, 2017: Biological & Pharmaceutical Bulletin
https://www.readbyqxmd.com/read/28179602/the-safety-profile-of-telaprevir-based-triple-therapy-in-clinical-practice-a-retrospective-cohort-study
#8
Ryo Iketani, Kazuki Ide, Hiroshi Yamada, Yohei Kawasaki, Naohiko Masaki
This study was designed to evaluate the safety profile of adding telaprevir to therapy using pegylated interferon-alfa-2b and ribavirin (PR) using real world patient data obtained from a nationwide Japanese interferon database. This retrospective cohort study compared telaprevir-based triple therapy (T/PR) with PR therapy. The study population comprised patients with genotype 1 chronic hepatitis C represented in the database between December 2009 and August 2015. The primary endpoint was dropout from treatment due to adverse events during the relevant standard treatment duration based on guidelines from the Japan Society of Hepatology...
February 9, 2017: Biological & Pharmaceutical Bulletin
https://www.readbyqxmd.com/read/28163294/metabolic-suppression-by-3-iodothyronamine-induced-muscle-cell-atrophy-via-activation-of-foxo-proteasome-signaling-and-downregulation-of-akt1-s6k-signaling
#9
Hyunwoo Ju, Taewan Kim, Chan-Moon Chung, Junsoo Park, Takeshi Nikawa, Kyoungsook Park, Inho Choi
The homeostasis of muscle properties depends on both physical and metabolic stresses. Whereas physical stress entails metabolic response for muscle homeostasis, the latter does not necessarily involve the former and may thus solely affect the homeostasis. We here report that metabolic suppression by the hypometabolic agent 3-iodothyronamine (T1AM) induced muscle cell atrophy without physical stress. We observed that the oxygen consumption rate of C2C12 myotubes decreased 40% upon treatment with 75 μM T1AM for 6 h versus 10% in the vehicle (dimethyl sulfoxide) control...
February 3, 2017: Biological & Pharmaceutical Bulletin
https://www.readbyqxmd.com/read/28123134/effects-of-combined-treatment-with-branched-chain-amino-acids-citric-acid-l-carnitine-coenzyme-q10-zinc-and-various-vitamins-in-tumor-bearing-mice
#10
Hiroko Awa, Akihiko Futamura, Takashi Higashiguchi, Akihiro Ito, Naoharu Mori, Miyo Murai, Hiroshi Ohara, Takeshi Chihara, Takaaki Kaneko
A functional dietary supplement (FDS) containing Coenzyme Q10, Branched-chain Amino Acids and L-carnitine was administered to tumor-bearing mice, investigating its effects on tumor and muscle tissues. Experiment (A): B16 melanoma cells were implanted subcutaneously into the right side of the abdomen of 8- to 9-week-old C57BL/6J mice. The mice were divided into two groups: a FDS group that received oral administration of FDS (n=10), and a control group that received oral administration of glucose (n=10).The moribund condition was used as the endpoint, and median survival time was determined...
January 26, 2017: Biological & Pharmaceutical Bulletin
https://www.readbyqxmd.com/read/28123152/the-anti-dementia-effects-of-donepezil-involve-mir-206-3p-in-the-hippocampus-and-cortex
#11
Cheng-Niu Wang, Ying-Jie Wang, Hao Wang, Lu Song, Yu Chen, Jin-Liang Wang, Ying Ye, Bo Jiang
Alzheimer's disease (AD) is a most serious age-related neurodegenerative disorder accompanied with significant memory impairments in this world. Recently, microRNAs have been reported to be invlolved in the pathophysiology of AD. Previous studies have shown that miR-206 is implicated in the pathogenesis of AD via suppressing the expression of BDNF in the brain. Here, we examined the miR-206-3p and miR-206-5p expression in the hippocampus and cortex of APP/PS1 transgenic mice treated with donepezil, a drug approved for treating AD in clinic...
January 25, 2017: Biological & Pharmaceutical Bulletin
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
#12
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/28100868/growth-inhibition-of-refractory-human-gallbladder-cancer-cells-by-retinol-and-its-mechanism-of-action
#13
Chuan Li, Masahiko Imai, Shinya Hasegawa, Masahiro Yamasaki, Noriko Takahashi
Among the constituents of the essential nutrient vitamin A, retinol is a potent suppressor of refractory cancer cell growth linked to tumor progression, showing greater efficacy than retinoic acid (RA). However, the mechanisms of retinol action on human refractory cancer are not known well. In the current study, we examined the actions of retinol on proliferation of human gallbladder cancer NOZ C-1 cells. Retinol and RA inhibited the proliferation of human NOZ C-1 cells in dose-dependent manner, while RA was less potent than retinol...
January 18, 2017: Biological & Pharmaceutical Bulletin
https://www.readbyqxmd.com/read/28100867/effects-of-pre-and-post-administration-of-vitamin-a-on-the-growth-of-refractory-cancers-in-xenograft-mice
#14
Chuan Li, Masahiko Imai, Masahiro Yamasaki, Shinya Hasegawa, Noriko Takahashi
Vitamin A is an essential nutrient that is obtained from the daily diet. The major forms of vitamin A in the body consist of retinol, retinal, retinoic acid (RA), and retinyl esters. Retinal is fundamental for vision and RA is used in clinical therapy of human acute promyelocytic leukemia. The actions of retinol and retinyl palmitate (RP) are not known well. Recently, we found that retinol is a potent anti-proliferative agent against human refractory cancers, including gallbladder cancer, being more effective than RA, while RP was inactive...
January 18, 2017: Biological & Pharmaceutical Bulletin
https://www.readbyqxmd.com/read/28100866/development-of-intra-knee-joint-sustained-release-gel-formulation-and-evaluation-of-its-pharmacological-efficiency-in-rats
#15
Takehiro Noda, Tomoyuki Okuda, Kousuke Ban, Ryota Mizuno, Tatsuaki Tagami, Tetsuya Ozeki, Hirokazu Okamoto
In the development of a drug for intra-articular administration, a sustained-release formulation is desirable since it is difficult to sustain the effects of conventional injections due to fast drug leakage from the joint cavity. In this study, we prepared sustained release gel formulations for intra-articular administration containing indocyanine green (ICG) as a model drug to follow its fate after intra-articular administration in rats with IVIS. ICG administered as an aqueous solution leaked from the joint cavity in a short time and was excreted out of the body within a day...
January 17, 2017: Biological & Pharmaceutical Bulletin
https://www.readbyqxmd.com/read/27916764/serotonergic-system-does-not-contribute-to-the-hypothermic-action-of-acetaminophen
#16
Akihiro Fukushima, Wakana Sekiguchi, Kizuku Mamada, Yumi Tohma, Hideki Ono
Acetaminophen (AcAP), a widely-used antipyretic and analgesic drug, has been considered to exert its effects via central mechanisms, and many studies have demonstrated that the analgesic action of AcAP involves activation of the serotonergic system. Although the serotonergic system also plays an important role in thermoregulation, the contribution of serotonergic activity to the hypothermic effect of AcAP has remained unclear. In the present study, we examined whether the serotonergic system is involved in AcAP-induced hypothermia...
February 1, 2017: Biological & Pharmaceutical Bulletin
https://www.readbyqxmd.com/read/28250280/species-difference-in-sensitivity-of-human-and-mouse-p2x7-receptors-to-inhibitory-effects-of-divalent-metal-cations
#17
Makiko Fujiwara, Kenshi Ohbori, Akihiro Ohishi, Kentaro Nishida, Yoshinobu Uozumi, Kazuki Nagasawa
P2X7 receptor (P2X7R), a purinergic receptor, is involved in pathophysiological events such as inflammation and cell death, and thus is an attractive target for therapeutic approaches. It is reported that divalent metal cations (DMCs) inhibit P2X7R activation and that there are species differences in their inhibitory effects. To extrapolate the findings in experimental animals to humans, these species differences have to be clarified, but species differences in the sensitivity of P2X7R to DMCs between man and mouse have not been demonstrated...
2017: Biological & Pharmaceutical Bulletin
https://www.readbyqxmd.com/read/28250279/3d-printing-factors-important-for-the-fabrication-of-polyvinylalcohol-filament-based-tablets
#18
Tatsuaki Tagami, Kaori Fukushige, Emi Ogawa, Naomi Hayashi, Tetsuya Ozeki
Three-dimensional (3D) printers have been applied in many fields, including engineering and the medical sciences. In the pharmaceutical field, approval of the first 3D-printed tablet by the U.S. Food and Drug Administration in 2015 has attracted interest in the manufacture of tablets and drugs by 3D printing techniques as a means of delivering tailor-made drugs in the future. In current study, polyvinylalcohol (PVA)-based tablets were prepared using a fused-deposition-modeling-type 3D printer and the effect of 3D printing conditions on tablet production was investigated...
2017: Biological & Pharmaceutical Bulletin
https://www.readbyqxmd.com/read/28250278/glucosamine-suppresses-osteoclast-differentiation-through-the-modulation-of-glycosylation-including-o-glcnacylation
#19
Tomoharu Takeuchi, Aya Sugimoto, Nao Imazato, Mayumi Tamura, Sachie Nakatani, Kenji Kobata, Yoichiro Arata
Osteoclasts represent the only bone resorbing cells in an organism. In this study, we investigated the effect of glucosamine (GlcN), a nutrient used to prevent joint pain and bone loss, on the osteoclastogenesis of murine macrophage-like RAW264 cells. GlcN supplementation suppressed the upregulation of osteoclast-specific genes (tartrate-resistant acid phosphatase (TRAP), cathepsin K, matrix metallopeptidase 9, and nuclear factor of activated T cell c1 (NFATc1)), receptor activator of nuclear factor-κB ligand (RANKL)-dependent upregulation of TRAP enzyme activity, and the formation of TRAP-positive multinuclear cells more effectively than N-acetylglucosamine (GlcNAc), which we have previously shown to inhibit osteoclast differentiation...
2017: Biological & Pharmaceutical Bulletin
https://www.readbyqxmd.com/read/28250277/molecular-dynamic-studies-of-interferon-and-innate-immunity-resistance-in-mers-cov-non-structural-protein-3
#20
Manal Alfuwaires, Abdallah Altaher, Mahmoud Kandeel
The new emerging Middle East Respiratory Syndrome Coronavirus (MERS CoV) encodes several resistance proteins against the innate immune response of the host, including interferon (IFN) resistance. Monitoring of the status of such proteins will be important to track viral pathogenicity. In this study, molecular dynamics approaches were used to investigate MERS CoV Non-Structural Protein 3 (NSP3) specific proteins that resist host innate immunity. MERS CoV papain-like protease (Plpro) was more conformationally flexible than Severe Acute Respiratory Syndrome CoV (SARS) CoV Plpro...
2017: Biological & Pharmaceutical Bulletin
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