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Biological & Pharmaceutical Bulletin

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https://www.readbyqxmd.com/read/28768938/a-novel-molecular-model-of-plant-lectin-induced-programmed-cell-death-in-cancer
#1
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...
August 1, 2017: Biological & Pharmaceutical Bulletin
https://www.readbyqxmd.com/read/28747591/assessment-of-genetic-and-chemical-variability-in-curcumae-longae-rhizoma-curcuma-longa-l-based-on-dna-barcoding-markers-and-hplc-fingerprints
#2
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 BOLD database. In contrast, ITS-LSU D1/D3 showed sufficient discriminatory power to precisely identify all of the market samples as C...
July 26, 2017: Biological & Pharmaceutical Bulletin
https://www.readbyqxmd.com/read/28659545/baicalein-protects-against-rotenone-induced-neurotoxicity-through-induction-of-autophagy
#3
Lianghong Kuang, Xiongbin Cao, Zuneng Lu
Baicalein, a typical flavonoid compound, has neuroprotective properties in several neurological disorders. Autophagy plays a central role in maintaining the cellular homeostasis, and is involved in the pathogenesis of Parkinson's disease (PD). Recently, baicalein has been reported to induce autophagy. Therefore, the current study was designed to investigate whether baicalein could protect against rotenone-induced neurotoxicity via induction of autophagy both in SH-SY5Y cells and in a mouse model. A chronic PD mouse model was established by continuous intragastric administration of rotenone for 12 weeks...
June 28, 2017: Biological & Pharmaceutical Bulletin
https://www.readbyqxmd.com/read/28652557/study-of-ph-stability-of-r-salbutamol-sulfate-aerosol-solution-and-its-antiasthmatic-effects-in-guinea-pigs
#4
Qing Liu, Qingrui Li, Ting Han, Tingting Hu, Xuemei Zhang, Junhua Hu, Hui Hu, Wen Tan
Currently, all commercial available nebulized Salbutamol in China is in its racemic form. It is known that only R-salbutamol (eutomer) has therapeutic effects, while S-salbutamol (distomer) may exacerbate asthma after chronic use. Therefore, it is an unmet clinical need to develop R-salbutamol as a nebulized product that is more convenient for young and old patients. In our study, a stable aerosol solution of R-salbutamol sulfate was established, and its antiasthmatic effects were confirmed. The decomposition rate and racemization effect of the R-salbutamol sulfate solution were evaluated over a pH range from 1 to 10 (except pH = 7, 8) at 60 ℃...
June 24, 2017: Biological & Pharmaceutical Bulletin
https://www.readbyqxmd.com/read/28637941/a-novel-danshensu-tetramethylpyrazine-conjugate-dt-010-provides-cardioprotection-through-the-pgc-1%C3%AE-nrf2-ho-1-pathway
#5
Xiaojing Zhang, Huihui Hu, Jingxiong Luo, Huixing Deng, Pei Yu, Zaijun Zhang, Gaoxiao Zhang, Luchen Shan, Yuqiang Wang
In this study, we investigated the cardioprotective mechanisms of action of DT-010, a novel danshensu-tetramethylpyrazine conjugate. DT-010 significantly preserved cell viability and suppressed cell apoptosis in H9c2 cells injured by tert-butylhydroperoxide (t-BHP), iodoacetic acid (IAA) and hypoxia-reoxygenation. In addition, DT-010 pre-treatment reduced the intracellular level of free radicals including superoxide anion (•O2(-)), hydroxyl radical (•OH) and peroxynitrite anion (ONOO(-)) after t-BHP exposure...
June 22, 2017: Biological & Pharmaceutical Bulletin
https://www.readbyqxmd.com/read/28626167/a-human-glucagon-like-peptide-1-albumin-recombinant-protein-with-prolonged-hypoglycemic-effect-provides-efficient-and-beneficial-control-of-glucose-metabolism-in-diabetic-mice
#6
Caina Li, Miaomiao Yang, Guojiang Hou, Shuainan Liu, Yi Huan, Dongan Yu, Sujuan Sun, Quan Liu, Shousheng Yan, Zhufang Shen
GW002 is a recombinant protein engineered by fusing the C-terminal region of human glucagon-like peptide-1 (GLP-1) to the N-terminal region of human serum albumin (HSA) with a peptide linker. This study aims to evaluate its anti-diabetic effects both in vitro and vivo. The GLP-1 receptor-dependent luciferase reporter plasmid was transiently transfected in NIT-1 cells to calculate the half-maximal concentration (EC50) for GLP-1 receptor activation, and normal ICR mice and diabetic KKAy mice were acutely injected with GW002 (1, 3 and 9 mg/kg) subcutaneously to evaluate the hypoglycemic action, while the diabetic KKAy and db/db mice were treated with GW002 once daily for 7 weeks to evaluate the effects on glucose metabolism...
June 17, 2017: Biological & Pharmaceutical Bulletin
https://www.readbyqxmd.com/read/28626198/the-therapeutic-effect-of-dexmedetomidine-on-rat-diabetic-neuropathy-pain-and-the-mechanism
#7
Yuecheng Lu, Baohua Lin, Junmin Zhong
Diabetic neuropathy pain (DNP) is a common chronic complication of diabetes characterized by spontaneous pain, hyperalgesia and allodynia. Dexmedetomidine is a selective α2 adrenergic agonist that relieves sympathetic nervous tension and reduces the release of glutamate. Thus, it is possible that dexmedetomidine may relieve DNP as well. In this study, we examined the effect of dexmedetomidine on DNP in the presence or absence of the α2 adrenergic antagonist yohimbine in rats utilizing a streptozotocin (STZ)-induced diabetes as a model of DNP...
June 14, 2017: Biological & Pharmaceutical Bulletin
https://www.readbyqxmd.com/read/28626197/evaluation-of-cyp2d6-protein-expression-and-activity-in-the-small-intestine-to-determine-its-metabolic-capability-in-the-japanese-population
#8
Momoko Kawakami, Sachiko Takenoshita-Nakaya, Yuko Takeba, Yuki Nishimura, Masayuki Oda, Minoru Watanabe, Yuki Ohta, Shinjiro Kobayashi, Takehito Ohtsubo, Shinichi Kobayashi, Naoki Uchida, Naoki Matsumoto
CYP2D6 plays an important role in the metabolism of many drugs such as opioids and antidepressants. Polymorphisms of the CYP2D6 gene are widely observed in the Japanese population, and can affect the first-pass metabolism of orally administered drugs. Several CYP enzymes have been identified in the small intestine of Caucasians, but intestinal CYP enzymes have not been reported in the Japanese population, except for CYP3A4 and CYP2C19. In this study, we evaluated the CYP2D6 metabolic capacity by measurement of CYP2D6 mRNA and protein levels and activity in the small intestine of Japanese individuals...
June 14, 2017: Biological & Pharmaceutical Bulletin
https://www.readbyqxmd.com/read/28603159/safety-profile-of-telaprevir-based-triple-therapy-in-elderly-patients-a-real-world-retrospective-cohort-study
#9
Maiko Akutagawa, Kazuki Ide, Yohei Kawasaki, Mie Yamanaka, Ryo Iketani, Hiroshi Yamada, Naohiko Masaki
To compare the rate of treatment discontinuation due to adverse events for telaprevir-based triple (T/PR) and pegylated interferon-alfa-2b and ribavirin (PR) therapy for the treatment of hepatitis C virus (HCV) infection in patients over the age of 65 years, in Japan.Retrospective analysis of the health data of patients over the age of 65 years treated for a HCV infection genotype 1 using T/PR or PR therapy, from 38 prefectures in Japan. The primary outcome was the rate of treatment discontinuation due to adverse events for T/PR and PR...
June 9, 2017: Biological & Pharmaceutical Bulletin
https://www.readbyqxmd.com/read/28592715/synthesis-of-clovamide-analogues-that-inhibit-no-production-in-activated-bv-2-microglial-cells
#10
Ju-Young Park, Byung-Wook Kim, Hae Un Lee, Dong-Kug Choi, Sung-Hwa Yoon
A series of methyl ester of clovamide analogues, where the hydroxyl group of catechol moiety in caffeic acid and L-dopa was replaced with various functional groups, were synthesized and their inhibitory effects on nitric oxide (NO) production and inducible NO synthase expression in lipopolysaccharide-induced BV2 cells were tested. Among the synthesized compounds, 3,5-ditrifluoromethyl analogue 9l (IC50 = 2.8 μM) exhibited a potency about 26.3 times greater than that of the parent compound 9a (IC50 = 73.6 μM) and suppressed NO production dose-dependently without cytotoxicity...
June 8, 2017: Biological & Pharmaceutical Bulletin
https://www.readbyqxmd.com/read/28579595/study-on-the-increased-probability-of-detecting-adverse-drug-reactions-based-on-bayes-theorem-evaluation-of-the-usefulness-of-information-on-the-onset-timing-of-adverse-drug-reactions
#11
Shinji Oshima, Takako Enjuji, Akio Negishi, Hayato Akimoto, Kousuke Ohara, Mitsuyoshi Okita, Sachihiko Numajiri, Naoko Inoue, Shigeru Ohshima, Akira Terao, Daisuke Kobayashi
In order to avoid adverse drug reactions (ADRs), pharmacists are reconstructing ADR-related information based on various types of data gathered from patients, and then providing this information to patients. Among the data provided to patients is the time-to-onset of ADRs after starting the medication (i.e., ADR onset timing information). However, a quantitative evaluation of the effect of onset timing information offered by pharmacists on the probability of ADRs occurring in patients receiving this information has not been reported to date...
June 3, 2017: Biological & Pharmaceutical Bulletin
https://www.readbyqxmd.com/read/28579594/exploration-of-underlying-mechanism-of-anti-adipogenic-activity-of-sulfuretin
#12
Ramakanta Lamichhane, Se-Gun Kim, Sona Kang, Kyung-Hee Lee, Prakash Raj Pandeya, Hyun-Ju Jung
Sulfuretin is a natural flavonoid found in the plant Rhus verniciflua Stokes. The plant has been traditionally used as medicinal agent for antiviral, cathartic, diaphoretic, anti-rheumatic and sedative activities in East Asia. In this study we isolated and identified sulfuretin from R. verniciflua and investigated its anti-adipogenic activity against 3T3-L1 preadipocytes cells. We evaluated the effects of sulfuretin on the adipogenic transcription factors like PPARγ, C/EBPα, FAS, Fabp4, adiponectin and Zfp521 by gene expression (real-time QPCR) and Western blot analysis...
June 3, 2017: Biological & Pharmaceutical Bulletin
https://www.readbyqxmd.com/read/28539527/effects-of-zebularine-on-invasion-activity-and-intracellular-expression-level-of-let-7b-in-colorectal-cancer-cells
#13
Shota Tanaka, Mika Hosokawa, Jyuri Matsumura, Emi Matsubara, Aika Kobori, Kumiko Ueda, Seigo Iwakawa
The effects of zebularine, a DNA methyltransferase inhibitor, on the invasion activity as well as intracellular expression level of let-7b, tumor suppressor microRNA, were examined in three human colorectal cancer (CRC) cell lines: SW480, SW620, and oxaliplatin-resistant SW620 (SW620/OxR). Zebularine suppressed the invasion activity of SW620 and SW620/OxR cells. The intracellular expression level of let-7b was up-regulated by zebularine in SW620 and SW620/OxR cells. The overexpression of let-7b by the transfection of let-7b mimic suppressed invasion activity in SW620 and SW620/OxR cells...
May 25, 2017: Biological & Pharmaceutical Bulletin
https://www.readbyqxmd.com/read/28381813/development-of-polyethylene-glycol-and-hard-fat-based-mucoadhesive-tablets-containing-various-types-of-polyvinyl-alcohols-as-mucoadhesive-polymers-for-buccal-application
#14
Yuri Ikeuchi-Takahashi, Ayaka Kobayashi, Hiraku Onishi
Topical drug application has the advantage of avoiding systemic side effects. We attempted to develop a long-acting matrix-type tablet containing indomethacin (IM) with low physical stimulus and potent mucoadhesive force to treat pain caused by oral aphtha. A mixture of polyethylene glycol (PEG) and hard fat was used as the tablet base. Ethylcellulose was added to the base in an attempt to control drug release. Tablets with PEG as a base were also prepared for comparison. Polyvinyl alcohols (PVAs) with various degrees of saponification were added to increase the mucoadhesive force...
June 1, 2017: Biological & Pharmaceutical Bulletin
https://www.readbyqxmd.com/read/28529241/downregulation-of-transcription-factor-sp1-suppresses-malignant-properties-of-a549-human-lung-cancer-cell-line-with-decreased-%C3%AE-4-galactosylation-of-highly-branched-n-glycans
#15
Kodai Muramoto, Riho Tange, Takayuki Ishii, Kana Miyauchi, Takeshi Sato
Dramatic changes in the glycan structures of cell surface proteins have been observed upon malignant transformation of cells as induced by the altered expression levels of glycosyltransferases. Such changes are closely associated with the malignant properties of cancer cells. Transcription factor Sp1 regulates the gene expression of various molecules including glycosyltransferases. Herein, we investigated whether or not Sp1-downregulation affects to N-glycosylation of glycoproteins and malignant properties of A549 human lung carcinoma cell line...
May 20, 2017: Biological & Pharmaceutical Bulletin
https://www.readbyqxmd.com/read/28529240/protective-effects-of-curcumin-on-manganese-induced-bv-2-microglial-cell-death
#16
Euteum Park, Hong Sung Chun
Curcumin, a bioactive component in tumeric, has been shown to exert antioxidant, anti-inflammatory, anticarcinogenic, hepatoprotective, and neuroprotective effects, but the effects of curcumin against manganese (Mn)-mediated neurotoxicity have not been studied. This study examined the protective effects of curcumin on Mn-induced cytotoxicity in BV-2 microglial cells. Curcumin (0.1-10 μM) dose-dependently prevented Mn (250 μM)-induced cell death. Mn-induced mitochondria-related apoptotic characteristics, such as caspase-3 and -9 activation, cytochrome c release, Bax increase, and Bcl-2 decrease, were significantly suppressed by curcumin...
May 20, 2017: Biological & Pharmaceutical Bulletin
https://www.readbyqxmd.com/read/28515374/polyphyllin-i-overcomes-emt-associated%C3%A2-resistance%C3%A2-to-erlotinib-in-lung-cancer-cells-via-il-6-stat3-pathway-inhibition
#17
Wei Lou, Yan Chen, Ke-Ying Zhu, Huizi Deng, Tianhao Wu, Jun Wang
Acquired resistance to epidermal growth factor receptor tyrosine kinase inhibitors (EGFR-TKIs) is the most important limiting factor for treatment efficiency in EGFR-mutant non-small cell lung cancer (NSCLC). Much work has linked the epithelial-mesenchymal transition (EMT) to the emergence of drug resistance, consequently, ongoing research has been focused on exploring the therapeutic options to reverse EMT for delaying or preventing drug resistance. Polyphyllin I (PPI) is a natural compound isolated from Paris polyphylla rhizomes and displayed anti-cancer properties...
May 18, 2017: Biological & Pharmaceutical Bulletin
https://www.readbyqxmd.com/read/28502922/design-synthesis-and-structure-activity-relationship-study-of-epoxysuccinyl-peptide-derivatives-as-cathepsin-b-inhibitors
#18
Xiaoye Zhang, Xiaohong Yang, Hongqiang Wang, Song Li, Kun Guo, Dan Jiang, Junhai Xiao, Di Liang
Cathepsin B is a lysosomal cysteine protease involved in many diseases. The present research demonstrates that derivatives of epoxysuccinyl-peptide are effective and selective cathepsin B inhibitors. We synthesized a series of epoxysuccinyl-peptide derivatives based on the well-known cathepsin B inhibitor E64d. Specifically, we substituted the 2-methylpropane group at the R(1) position of E64d with a sulfane, such as ethyl(methyl) sulfane or benzyl(methyl) sulfane. We also designed and synthesized a library of molecules with various substituents at the R(2) position of E64d to replace 2-methylbutane...
May 13, 2017: Biological & Pharmaceutical Bulletin
https://www.readbyqxmd.com/read/28502921/umbilical-cord-mscs-reverse-d-galactose-induced-hepatic-mitochondrial-dysfunction-via-activation-of-nrf2-ho-1-pathway
#19
Weihong Yan, Dong Li, Tong Chen, Guiying Tian, Panpan Zhou, Xiuli Ju
Mitochondria are the central hubs for cellular bioenergetics and are crucial to cell survival. It is well accepted that compromised mitochondrial function is linked with hepatocytes injury and contribute to progression of liver diseases. Despite the therapeutic potential of mesenchymal stem cells (MSCs) transplantation on hepatic disorders have been extensively investigated, the effects of MSCs on mitochondrial function in liver injury models remain unknown. Here we investigated the effects of treatment with umbilical cord (UC) MSC in a rat model of D-Gal induced liver injury, characterized by organ damage, oxidative stress and mitochondrial dysfunction...
May 13, 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
#20
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...
May 1, 2017: Biological & Pharmaceutical Bulletin
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