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Biological & Pharmaceutical Bulletin

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https://www.readbyqxmd.com/read/29332929/size-based-differentiation-of-cancer-and-normal-cells-by-a-particle-size-analyzer-assisted-by-a-cell-recognition-pc-software
#1
Babita Shashni, Shinya Ariyasu, Reisa Takeda, Toshihiro Suzuki, Shota Shiina, Kazunori Akimoto, Takuto Maeda, Naoyuki Aikawa, Ryo Abe, Tomohiro Osaki, Norihiko Itoh, Shin Aoki
Detection of anomalous cells such as cancer cells from normal blood cells has the potential to contribute greatly to cancer diagnosis and therapy. Conventional methods for the detection of cancer cells are usually tedious and cumbersome. Herein, we report on the use of a particle size analyzer for the convenient size-based differentiation of cancer cells from normal cells. Measurements made using a particle size analyzer revealed that size parameters for cancer cells are significantly greater (e.g., inner diameter and width) than the corresponding values for normal cells (white blood cells (WBC), lymphocytes and splenocytes), with no significant difference in shape parameters (e...
January 13, 2018: Biological & Pharmaceutical Bulletin
https://www.readbyqxmd.com/read/29269607/identification-and-characterization-of-a-novel-nadph-oxidase1-nox1-inhibitor-that-suppresses-proliferation-of-colon-and-stomach-cancer-cells
#2
Tsuyoshi Yamamoto, Hirofumi Nakano, Kazuro Shiomi, Kiyofumi Wanibuchi, Hisashi Masui, Takashi Takahashi, Yasuteru Urano, Tohru Kamata
Reactive oxygen species (ROS) generated by NADPH oxidase (Nox)1 mediate cellular signalings involved in normal physiological processes, and aberrant control of Nox1 has been implicated in the pathogenesis of various diseases. Therefore, Nox1 could have great potential as a therapeutic target. Here, we identified a novel Nox1 inhibitor, NOS31 secreted from Stretomyces sp. and analyzed its chemical structure. Furthermore, NOS31 was found to selectively inhibit Nox1-mediated ROS generation, with only a marginal effect on other Nox isoforms (Nox2-5) and no ROS scavenging activity...
December 22, 2017: Biological & Pharmaceutical Bulletin
https://www.readbyqxmd.com/read/29249771/synthesis-of-novel-class-of-n-alkyl-isatin-3-iminobenzoic-acid-derivatives-and-their-biological-activity-in-zebrafish-embryos-and-human-cancer-cell-lines
#3
Muhammad Farooq, Zainab M Almarhoon, Nael Abu Taha, Almohannad A R Baabbad, Mohammed A Al-Wadaan, Ayman El-Faham
Isatin (1H-indole-2,3-dione) and many of its derivatives are reported to have pharmacological properties. In this study, we report the synthesis and biological activity of a new class of N-alkyl-isatin-3-iminobenzoic acid derivatives prepared via the condensation of N-alkyl isatin with 4-aminobenzoic acid by conventional, microwave, and ultrasonic methods. Microwave irradiation yielded the products in a shorter reaction time with higher yields and purities. The compounds were screened in zebrafish embryos, and also in three human cancer cell lines (MCF7, HepG2, and Jurkat) and one normal human cell line i...
December 16, 2017: Biological & Pharmaceutical Bulletin
https://www.readbyqxmd.com/read/29212964/simple-determination-of-plasma-ponatinib-concentration-using-hplc
#4
Takeo Yasu, Kenji Momo, Shunsuke Kobayashi, Seiichirou Kuroda, Arinobu Tojo
Ponatinib, a novel tyrosine kinase inhibitor marketed in 2016, is a key drug used for treating chronic myeloid leukemia and Philadelphia chromosome-positive acute lymphoblastic leukemia. This study aimed to develop a simple method for determining plasma ponatinib concentration. The analysis required extraction of a 400-μL sample of plasma and precipitation of proteins using an Oasis HLB cartridge. Ponatinib and bosutinib, which is used as an internal standard, were separated by HPLC using a mobile phase of acetonitrile: 0...
December 6, 2017: Biological & Pharmaceutical Bulletin
https://www.readbyqxmd.com/read/29187695/microrna-21-regulated-activation-of-the-akt-pathway-participates-in-the-protective-effects-of-h2s-against-liver-ischemia-reperfusion-injury
#5
Meng Lu, Xian Jiang, Liquan Tong, Feng Zhang, Lin Ma, Xuesong Dong, Xueying Sun
Maintaining a certain level of hydrogen sulfide (H2S) in ischemia-reperfusion (I/R) is essential for limiting injury to the liver. Exogenous H2S exerts protective effects against this injury, but the mechanisms remain unclear. Liver injury was induced in Wistar rats undergoing hepatic I/R for 30 min, followed by a 3-h reperfusion. Administration of GYY4137 (a slow-releasing H2S donor) significantly attenuated the severity of liver injury and was reflected by reduced inflammatory cytokine production and cell apoptosis, the levels of which were elevated by I/R, while DL-propargylglycine (PAG, an inhibitor of cystathionine γ-lyase [CSE]) aggravated liver injury...
November 30, 2017: Biological & Pharmaceutical Bulletin
https://www.readbyqxmd.com/read/29187671/bavachin-induces-apoptosis-through-mitochondrial-regulated-er-stress-pathway-in-hepg2-cells
#6
Ying Yang, Xianglin Tang, Feiran Hao, Zengchun Ma, Yuguang Wang, Lili Wang, Yue Gao
As a traditional herbal medicine, the fruits of Psoralea corylifolia L. (FP) have been widely used for the treatment of various skin diseases for hundred years. Recently, the emerging FP-induced toxic effects, especially hepatotoxicity, in clinic are getting the public's attention. However, its exact toxic components and mechanisms underlying remain unclear. Bavachin, one of flavonoids in FP, has been documented as a hepatotoxic substance, and the present study aimed to determine the toxicity caused by bavachin and the possible toxic mechanisms involved using HepG2 cells...
November 29, 2017: Biological & Pharmaceutical Bulletin
https://www.readbyqxmd.com/read/29187670/differential-development-of-facial-and-hind-paw-allodynia-in-a-nitroglycerin-induced-mouse-model-of-chronic-migraine-role-of-capsaicin-sensitive-primary-afferents
#7
Sol-Ji Kim, Ji-Hee Yeo, Seo-Yeon Yoon, Soon-Gu Kwon, Jang-Hern Lee, Alvin J Beitz, Dae-Hyun Roh
Despite the relatively high prevalence of migraine or headache, the pathophysiological mechanisms triggering headache-associated peripheral hypersensitivities, are unknown. Since nitric oxide (NO) is well known as a causative factor in the pathogenesis of migraine or migraine-associated hypersensitivities, a mouse model has been established using systemic administration of the NO donor, nitroglycerin (NTG). Here we tried to investigate the time course development of facial or hindpaw hypersensitivity after repetitive NTG injection...
November 29, 2017: Biological & Pharmaceutical Bulletin
https://www.readbyqxmd.com/read/29187701/association-between-concomitant-use-of-acyclovir-or-valacyclovir-with-nsaids-and-an-increased-risk-of-acute-kidney-injury-data-mining-of-fda-adverse-event-reporting-system
#8
Zhihua Yue, Jinhai Shi, Haona Li, Huiyi Li
NSAIDs are likely to be used concomitantly with acyclovir or valacyclovir in clinical practice, but the study on the safety of such combinations was seldom reported. The objective of the study was to investigate reports of acute kidney injury(AKI) events associated with the concomitant use of oral acyclovir or valacyclovir with an NSAID by using the United States Food and Drug Administration(FDA) Adverse Event Reporting System (AERS) database between January 2004 and June 2012. The frequency of AKI events in patients while simultaneously taking either acyclovir or valacyclovir and an NSAID was compared using the Chi-square test...
November 28, 2017: Biological & Pharmaceutical Bulletin
https://www.readbyqxmd.com/read/29176265/the-effect-of-ethanol-on-the-hydrolysis-of-ester-type-drugs-by-human-serum-albumin
#9
Akitoshi Tatsumi, Sachiyo Inoue, Tsuneo Hamaguchi, Seigo Iwakawa
Human serum albumin (HSA) has two major ligand-binding sites, sites I and II, and hydrolyzes compounds at both sites. Although the hydrolytic interaction of ester-type drugs with other drugs by HSA has been reported, there are only a few studies concerning the effect of pharmaceutical excipients on the hydrolysis of ester-type drugs by HSA. In the present study, we investigated the effect of ethanol (2 vol%; 345 mM) on the hydrolysis of aspirin, p-nitrophenyl acetate, and olmesartan medoxomil, which are ester-type drugs, with 4 different lots of HSA preparations...
November 27, 2017: Biological & Pharmaceutical Bulletin
https://www.readbyqxmd.com/read/29176264/efficacy-of-chondroitin-sulfate-for-painful-knee-osteoarthritis-a-one-year-randomized-double-blind-multicenter-clinical-study-in-japan
#10
Mitsuhiro Morita, Kotaro Yamada, Hideki Date, Kazue Hayakawa, Hidetomo Sakurai, Harumoto Yamada
We explored the effects of chondroitin sulfate on knee osteoarthritis in a one-year, randomized, double-blind, dose-comparison study. Patients with painful, Kellgren-Lawrence grade 2-3, osteoarthritis of the knee were treated with oral chondroitin sulfate at a dose of either 260 mg/day (low-dose group, control group) or 1,560 mg/day (high-dose group). Symptoms were evaluated by the Lequesne's index and visual analog scale for pain. We made subgroup analyses according to background symptom severity (Lequesne's index ≥8 or <8) in 73 patients...
November 27, 2017: Biological & Pharmaceutical Bulletin
https://www.readbyqxmd.com/read/29093325/inhibition-of-3-5-2-4-tetrahydroxychalcone-on-production-of-uric-acid-in-hypoxanthine-induced-hyperuricemic-mice
#11
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
#12
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
#13
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/29311488/role-of-supplementary-selenium-on-the-induction-of-insulin-resistance-and-oxidative-stress-in-nsy-mice-fed-a-high-fat-diet
#14
Koichi Murano, Hirofumi Ogino, Tomofumi Okuno, Tomohiro Arakawa, Hitoshi Ueno
The role of supplementary selenium on the induction of insulin resistance and oxidative stress in a diabetic mouse model was investigated in NSY mice on a high fat diet (HFD) and administered seleno-L-methionine (SeMet)-containing water for 12 weeks. Significant increases in oral glucose tolerance-tested (OGTT), insulin tolerance-tested, and non-fasting blood glucose levels were observed in mice on a HFD, as well as the significant increases in OGTT and non-fasting plasma insulin levels. Mice on a HFD had decreased plasma adiponectin levels and increased free fatty acid (FFA) levels...
2018: Biological & Pharmaceutical Bulletin
https://www.readbyqxmd.com/read/29311487/acyl-chain-preference-in-foam-cell-formation-from-mouse-peritoneal-macrophages
#15
Yuko Fujiwara, Kotaro Hama, Makoto Tsukahara, Ryosuke Izumi-Tsuzuki, Toru Nagai, Mihoko Ohe-Yamada, Keizo Inoue, Kazuaki Yokoyama
Macrophage foam cells play critical roles in the initiation and development of atherosclerosis by synthesizing and accumulating cholesteryl ester (CE) in lipid droplets. However, in analyzing lipid metabolism in foam cell formation, studies have focused on the sterol group, and little research has been done on the acyl chains. Therefore, we adapted a model system using liposomes containing particular acyl chains and examined the effect of various acyl chains on foam cell formation. Of the phosphatidylserine (PS) liposomes tested containing PS, phosphatidylcholine, and cholesterol, we found that unsaturated (C18:1), but not saturated (C16:0 and C18:0), PS liposomes induced lipid droplet formation, indicating that foam cell formation depends on the nature of the acyl chain of the PS liposomes...
2018: Biological & Pharmaceutical Bulletin
https://www.readbyqxmd.com/read/29311486/effect-of-seleno-l-methionine-on-oxidative-stress-in-the-pancreatic-islets-of-a-short-term-induced-diabetic-mouse-model-in-insufficient-selenium-status
#16
Hitoshi Ueno, Ryo Shimizu, Tomofumi Okuno, Hirofumi Ogino, Tomohiro Arakawa, Koichi Murano, Katsuhiko Nakamuro
The protective effects of seleno-L-methionine (SeMet) on oxidative stress in pancreatic islets were investigated with a short-term nicotinamide (NA) and streptozotocin (STZ)-induced diabetic mouse model. ICR mice were intraperitoneally injected twice with 100 mg/kg STZ and 120 mg/kg NA at a 1-d interval and were then orally administered 158 µg Se/kg SeMet with free access to a selenium-deficient diet for 5 weeks. Administration of SeMet significantly improved the levels of glycated hemoglobin (HbA1c), non-fasting and oral glucose tolerance-tested (OGTT) blood glucose, plasma adiponectin and hepatic glycogen that deteriorated by NA/STZ treatment...
2018: Biological & Pharmaceutical Bulletin
https://www.readbyqxmd.com/read/29311485/evaluation-of-antimelanogenic-activity-and-mechanism-of-galangin-in-silico-and-in-vivo
#17
Ki Wung Chung, Hyeong Oh Jeong, Eun Kyeong Lee, Su Jeong Kim, Pusoon Chun, Hae Young Chung, Hyung Ryong Moon
Abnormal pigmentation owing to excessive melanin synthesis can result in serious problems such as freckles, age-spots, and melanoma. Tyrosinase inhibitors have been an interesting target for the treatment of hyperpigmentation because tyrosinase is the rate-limiting enzyme in melanin synthesis. The screening for strong tyrosinase inhibitors led to the finding of the flavonoid galangin, which showed notable inhibitory effects on mushroom tyrosinase. The IC50 value of galangin (3.55±0.39 µM) was lower than that of kojic acid (48...
2018: Biological & Pharmaceutical Bulletin
https://www.readbyqxmd.com/read/29311484/molecular-determinants-of-%C3%AE-3%C3%AE-4-nicotinic-acetylcholine-receptors-inhibition-by-triterpenoids
#18
Sanung Eom, Yoon Suh Kim, Sung Bae Lee, Shinhwa Noh, Hye Duck Yeom, Hyunsu Bae, Jun-Ho Lee
In a previous work, we reported the regulatory role of the triterpenoids on 5-hydroxytryptamine (5-HT)3A receptors activity in Xenopus laevis oocytes (Eur. J. Pharmacol., 615, 2009, Lee et al.). In the present report, we studied the modulation of triterpenoids on the activity of the human nicotinic acetylcholine receptor type α3β4. Two-electrode voltage clamp experiments were used to test acetylcholine mediated inward current (IACh). Treatment with triterpenoids (dehydroeburicoic acid, 6α-hydroxypolyporenic acid C and pachymic acid) inhibited IACh in a concentration dependent and reversible manner...
2018: Biological & Pharmaceutical Bulletin
https://www.readbyqxmd.com/read/29311483/the-polysaccharide-extracted-from-umbilicaria-esculenta-inhibits-proliferation-of-melanoma-cells-through-ros-activated-mitochondrial-apoptosis-pathway
#19
Yanhong Sun, Jun Li, Yi Zhang, Yating Tu, Changzheng Huang, Juan Tao, Ming Yang, Liu Yang
Melanoma is one of the most aggressive skin cancers with an increasing rate of morbidity. Umbilicaria esculenta is an edible lichen and its main component of extracts-polysaccharide (PUE) has shown significant antitumor effects in a variety of cancer types such as stomach adenocarcinoma. However, whether it has an anti-melanoma effect and the underlying mechanism has not been revealed. In this article, we showed that PUE extracted from Umbilicaria esculenta could inhibit the growth of A875 and A375 melanoma cells but without obvious toxicity to normal vascular endothelial cells...
2018: Biological & Pharmaceutical Bulletin
https://www.readbyqxmd.com/read/29311482/population-pharmacokinetics-and-adverse-events-of-erlotinib-in-japanese-patients-with-non-small-cell-lung-cancer-impact-of-genetic-polymorphisms-in-metabolizing-enzymes-and-transporters
#20
Chihiro Endo-Tsukude, Ji-Ichiro Sasaki, Sho Saeki, Norihiro Iwamoto, Megumi Inaba, Sunao Ushijima, Hiroto Kishi, Shinji Fujii, Hiroshi Semba, Kosuke Kashiwabara, Yukari Tsubata, Mitsuhiro Hayashi, Yuki Kai, Hideyuki Saito, Takeshi Isobe, Hirotsugu Kohrogi, Akinobu Hamada
Determinants of interindividual variability in erlotinib pharmacokinetics (PK) and adverse events remain to be elucidated. This study with 50 Japanese non-small-cell lung cancer patients treated with oral erlotinib at a standard dose of 150 mg aimed to investigate whether genetic polymorphisms affect erlotinib PK and adverse events. Single nucleotide polymorphisms (SNPs) in genes encoding metabolizing enzymes (CYP1A1, CYP1A2, CYP2D6, CYP3A4, CYP3A5, UGT1A1, UGT2B7, GSTM1, and GSTT1) or efflux transporters (ABCB1, and ABCG2) were analyzed as covariates in a population PK model...
2018: Biological & Pharmaceutical Bulletin
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