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Archives of Pharmacal Research

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https://www.readbyqxmd.com/read/28643288/inhibitory-effect-of-fsllry-nh2-on-inflammatory-responses-induced-by-hydrogen-peroxide-in-hepg2-cells
#1
Yeon Joo Lee, Su Jin Kim, Kyoung Wan Kwon, Won Mo Lee, Wi Joon Im, Uy Dong Sohn
Proteinase activated receptor 2 (PAR2), which is localized in the GI tract, the respiratory system, and the kidney tubules is a G protein-coupled receptor associated with inflammation, metabolism, and disease. The aim of this study was to explore the role of PAR2 in hydrogen peroxide (H2O2)-induced HepG2 cells by using FSLLRY-NH2 a PAR2 antagonist. H2O2 treatment resulted in induction of PAR2 in esophageal, gastric, and liver cells, with the most robust response being in HepG2 cells. Furthermore, this effect was dose-dependent in HepG2 cells...
June 22, 2017: Archives of Pharmacal Research
https://www.readbyqxmd.com/read/28612118/microbial-transformation-of-naringenin-derivatives
#2
Yina Xiao, Ik-Soo Lee
Microbial transformations of (±)-7-O-prenylnaringenin (7-PN, 1) and (±)-7-O-allylnaringenin (7-AN, 2) have isolated four metabolites (3-6). Structures of these novel compounds were identified as 5,4'-dihydroxy-7-O-[(2E)-4-hydroxy-3-methyl-2-buten-1-yl]flavanone (3), 5,4'-dihydroxy-7-O-(2,3-dihdroxy-3-methylbutyl)flavanone (4), 5,4'-dihydroxy-7-O-(2,3-dihdroxypropyl)flavanone (5), and 5-O-β-D-glucopyranosyl-7-O-allyl-4'-hydroxyflavanone (6) based on spectroscopy. Compounds 1-6 were evaluated for their radical scavenging capacity using DPPH (2,2-diphenyl-1-picrylhydrazyl)...
June 13, 2017: Archives of Pharmacal Research
https://www.readbyqxmd.com/read/28601982/collision-induced-dissociation-pathways-of-h1-antihistamines-by-electrospray-ionization-quadrupole-time-of-flight-mass-spectrometry
#3
Jung-Ah Do, Eunyoung Noh, Soon-Byung Yoon, Ji Hyun Lee, Sung-Kwan Park, Suresh Mandava, Sun Young Baek, Jongkook Lee
Over the past decades, mass spectrometry technologies have been developed to obtain mass accuracies of one ppm or less. Of the newly developed technologies, quadrupole time-of-flight mass spectrometry (Q-TOF-MS) has emerged as being well suited to routine and high-throughput analyses of pharmaceuticals. Dietary supplements and functional foods have frequently been found to be contaminated with pharmaceuticals. In our continuous efforts to develop methodologies to protect public health against adulterated dietary supplements, we have constructed a mass spectral database for 21 H1-antihistamines encountered as adulterants by using liquid chromatography-electrospray ionization (LC-ESI)/Q-TOF-MS, and have proposed their possible collision-induced dissociation pathways...
June 10, 2017: Archives of Pharmacal Research
https://www.readbyqxmd.com/read/28600733/phytoceramide-ameliorates-%C3%A3-amyloid-protein-induced-memory-impairment-and-neuronal-death-in-mice
#4
Ji Yeon Jang, Hong Kyu Lee, Hwan-Su Yoo, Yeon Hee Seong
The present study was performed to investigate the protective effect of phytoceramide against ß-amyloid protein (Aβ) (25-35)-induced memory impairment and its underlying mechanisms in mice. Memory impairment in mice was induced by intracerebroventricular injection of 15 nmol Aβ (25-35) and measured by the passive avoidance test and Morris water maze test. Chronic administration of phytoceramide (10, 25 and 50 mg/kg, p.o.) resulted in significantly less Aβ (25-35)-induced memory loss and hippocampal neuronal death in treated mice compared to controls...
June 9, 2017: Archives of Pharmacal Research
https://www.readbyqxmd.com/read/28593550/yh18421-a-novel-gpr119-agonist-exerts-sustained-glucose-lowering-and-weight-loss-in-diabetic-mouse-model
#5
Yoo Hoi Park, Hyun Ho Choi, Dong Hoon Lee, Soo Yong Chung, Na Yeon Yang, Do Hoon Kim, Mi Kyeong Ju, Tae Dong Han, Su Youn Nam, Kyu-Won Kim
G-protein-coupled receptor 119 (GPR119) represents a promising target for the treatment of type 2 diabetes as it can increase both GLP-1 secretion from intestinal L cells and glucose-stimulated insulin secretion (GSIS) from pancreatic β cells. Due to this dual mechanism of action, the development of small molecule GPR119 agonists has received much interest for the treatment of type 2 diabetes. Here, we identified a novel small-molecule GPR119 agonist, YH18421 and evaluated its therapeutic potential. YH18421 specifically activated human GPR119 with high potency and potentiated GLP-1 secretion and GSIS in vitro cell based systems...
June 8, 2017: Archives of Pharmacal Research
https://www.readbyqxmd.com/read/28589255/potential-anti-cholinesterase-and-%C3%AE-site-amyloid-precursor-protein-cleaving-enzyme-1-inhibitory-activities-of-cornuside-and-gallotannins-from-cornus-officinalis-fruits
#6
Himanshu Kumar Bhakta, Chan Hum Park, Takako Yokozawa, Takashi Tanaka, Hyun Ah Jung, Jae Sue Choi
Cholinesterase (ChE) and β-site amyloid precursor protein cleaving enzyme 1 (BACE1) inhibitors are promising agents for the treatment of Alzheimer's disease (AD). In the present study, we examined the inhibitory activity of seven compounds isolated from the fruits of Cornus officinalis, cornuside, polymeric proanthocyanidins, 1,2,3-tri-O-galloyl-β-D-glucose, 1,2,3,6-tetra-O-galloyl-β-D-glucose, tellimagrandin I, tellimagrandin II, and isoterchebin, against acetylcholinesterase (AChE), butyrylcholinesterase (BChE), and BACE1...
June 6, 2017: Archives of Pharmacal Research
https://www.readbyqxmd.com/read/28560500/synergistic-induction-of-apoptosis-by-combination-treatment-with-mesupron-and-auranofin-in-human-breast-cancer-cells
#7
Joo-Eun Lee, Yeo-Jung Kwon, Hyoung-Seok Baek, Dong-Jin Ye, Eunah Cho, Hyung-Kyoon Choi, Kyung-Soo Oh, Young-Jin Chun
Urokinase-type plasminogen activator (uPA) has been validated as a predictive or prognostic biomarker protein, and mesupron is considered the first-in-class anticancer agent to inhibit uPA activity in human breast cancer. In the present study, we showed that the synergism between mesupron and auranofin, a thioredoxin reductase inhibitor, for inducing of apoptosis in MCF-7 human breast cancer cells. Our results demonstrated that mesupron and auranofin significantly lead to inhibition of the cancer cells proliferation; cell cycle arrest at the G1/S phase of the cell cycle, and apoptosis as indicated by caspase 3 activation, poly(ADP-ribose) polymerase cleavage, and annexin V staining...
May 31, 2017: Archives of Pharmacal Research
https://www.readbyqxmd.com/read/28547390/mono-substitution-effects-on-antimicrobial-activity-of-stapled-heptapeptides
#8
Huy X Luong, Do-Hee Kim, Ngoan T Mai, Bong-Jin Lee, Young-Woo Kim
We previously reported a de novo design of antimicrobial heptapeptide helices using Verdine's all-hydrocarbon peptide stapling system. One of the important structure-activity relationships we found from these previous studies was that extending of the hydrophobic face by replacing of alanine with leucine in positon 5 increases antimicrobial activity. In this study, to further improve the activity profile of this peptide series, we investigated the substitution effects of position 5 on conformational and proteolytic stability as well as antimicrobial and hemolytic activity...
May 25, 2017: Archives of Pharmacal Research
https://www.readbyqxmd.com/read/28547389/anti-inflammation-compounds-from-the-seedpods-of-pongamia-pinnata-l-pierre-guided-by-the-bioactivity-and-uplc-hresims
#9
Hong Guo, Zisong Bai, Yangyang Xu, Xueqin Wu, Ning Li, Yan Zhu, Xiaoming Wang, Peng Zhang
Pongamia pinnata (Linn.) Pierre has anti-inflammatory activity and could significantly decrease serum tumor necrosis factor-α and IL-10 in arthritic rats. Previous research indicated the typical chemical constituent in P. pinnata is furanoflavone. Guided by anti-inflammatory active assay and UPLC-HRESIMS chromatography, 22 compounds were isolated from the ethanol extract of P. pinnata seedpods. One novel furanoflavone, 4'-hydroxypinnatin, was elucidated by HRESIMS, 1D- and 2D-NMR spectra. The 21 known compounds, including 9 furanoflavone, were identified by comparing their NMR data with the previous data in reference...
May 25, 2017: Archives of Pharmacal Research
https://www.readbyqxmd.com/read/28508944/suppressive-effects-of-zingerone-on-tgfbip-mediated-septic-responses
#10
Gahee Min, Sae-Kwang Ku, Taeho Lee, Jong-Sup Bae
Zingerone (ZGR), a phenolic alkanone isolated from ginger, has been reported to possess various pharmacological activities. Transforming growth factor β-induced protein (TGFBIp) is an extracellular matrix protein whose expression in several cell types is greatly increased by TGF-β. TGFBIp is released by human umbilical vein endothelial cells and functions as a mediator of experimental sepsis. We hypothesized that ZGR could reduce TGFBIp-mediated severe inflammatory responses in human endothelial cells and mice...
May 16, 2017: Archives of Pharmacal Research
https://www.readbyqxmd.com/read/28508182/new-antimicrobial-flavonoids-and-chalcone-from-colutea-armata
#11
Farah Inamullah, Itrat Fatima, Sadia Khan, Mehdi Hassan Kazmi, Abdul Malik, Rasool Bakhsh Tareen, Tanveer Abbas
Colucins A (1) and B (2), new flavonoids and colucone (3), the new chalcone derivative, have been isolated from the CHCl3-soluble fraction of the whole plant of Colutea armata along with luteolin (4), luteolin 7-O-β-D-glucoside (5), isoliquiritigenin (6), trans-caffeic acid (7) and stigmasterol (8) reported for the first time from this species. Their structures were elucidated by spectroscopic techniques including MS and 2D-NMR spectroscopy. Compounds 1 and 2 showed significant antimicrobial activity against two Gram positive and three Gram negative bacterial strains while 3 was moderately active...
May 15, 2017: Archives of Pharmacal Research
https://www.readbyqxmd.com/read/28501973/neuroprotective-compounds-from-reynoutria-sachalinensis
#12
Min Rye Eom, Jin Bae Weon, Youn Sik Jung, Ga Hee Ryu, Woo Seung Yang, Choong Je Ma
Glutamate is a neurotransmitter in central nervous system. Overexpression of glutamate leads to oxidative stress, resulting in several neurodegenerative disorders that include Alzheimer's disease. The n-hexane fraction of stems and ethyl acetate (EtOAc) fraction of flowers of Reynoutria sachalinensis provide neuroprotection against glutamate-induced oxidative toxicity in HT22 cells. In this study, 1-decanol (1), β-amyrin (2), dammaran-3β-ol (3), campesterol (4), daucosterol (5), ergosterol peroxide (6), emodin 8-O-β-D-glucopyranoside (7), quercetin (8) and isoquercitrin (9) were isolated from n-hexane fractions of stems and EtOAc fractions of flowers of R...
May 13, 2017: Archives of Pharmacal Research
https://www.readbyqxmd.com/read/28484907/inhibition-of-cytochrome-p450-and-uridine-5-diphospho-glucuronosyltransferases-by-mam-2201-in-human-liver-microsomes
#13
Tae Yeon Kong, Ju-Hyun Kim, Soon-Sang Kwon, Jae Chul Cheong, Hee Seung Kim, Moon Kyo In, Hye Suk Lee
MAM-2201, a synthetic cannabinoid, is a potent agonist of the cannabinoid receptors and is increasingly used as an illicit recreational drug. The inhibitory effects of MAM-2201 on major drug-metabolizing enzymes such as cytochrome P450s (CYPs) and uridine 5'-diphospho-glucuronosyltransferases (UGTs) have not yet been investigated although it is widely abused, sometimes in combination with other drugs. We evaluated the inhibitory effects of MAM-2201 on eight major human CYPs (CYPs 1A2, 2A6, 2B6, 2C8, 2C9, 2C19, 2D6, and 3A4) and six UGTs (UGTs 1A1, 1A3, 1A4, 1A6, 1A9, and 2B7) of pooled human liver microsomes; we thus explored potential MAM-2201-induced drug interactions...
May 8, 2017: Archives of Pharmacal Research
https://www.readbyqxmd.com/read/28456911/qsar-based-therapeutic-management-of-m-tuberculosis
#14
REVIEW
Shahzaib Ahamad, Safikur Rahman, Faez Iqbal Khan, Neeraja Dwivedi, Sher Ali, Jihoe Kim, Md Imtaiyaz Hassan
Mycobacterium tuberculosis is responsible for severe mortality and morbidity worldwide but, under-developed and developing countries are more prone to infection. In search of effective and wide-spectrum anti-tubercular agents, interdisciplinary approaches are being explored. Of the several approaches used, computer based quantitative structure activity relationship (QSAR) have gained momentum. Structure-based drug design and discovery implies a combined knowledge of accurate prediction of ligand poses with the good prediction and interpretation of statistically validated models derived from the 3D-QSAR approach...
April 29, 2017: Archives of Pharmacal Research
https://www.readbyqxmd.com/read/28439780/angelica-keiskei-an-emerging-medicinal-herb-with-various-bioactive-constituents-and-biological-activities
#15
REVIEW
Yun-Seo Kil, Sally T Pham, Eun Kyoung Seo, Mahtab Jafari
Angelica keiskei (Miq.) Koidz. (Umbelliferae) has traditionally been used to treat dysuria, dyschezia, and dysgalactia as well as to restore vitality. Recently, the aerial parts of A. keiskei have been consumed as a health food. Various flavonoids, coumarins, phenolics, acetylenes, sesquiterpene, diterpene, and triterpenes were identified as the constituents of A. keiskei. The crude extracts and pure constituents were proven to inhibit tumor growth and ameliorate inflammation, obesity, diabetics, hypertension, and ulcer...
April 24, 2017: Archives of Pharmacal Research
https://www.readbyqxmd.com/read/28397193/synthesis-and-anti-inflammatory-activities-of-novel-dihydropyranoaurone-derivatives
#16
Zheng Wang, Eun Ju Bae, Young Taek Han
A novel series of dihydropyranoaurone derivatives were synthesized and evaluated as potential anti-inflammatory agents. Late-stage derivatization by versatile piperazine-catalyzed aldol reaction between dihydropyanobenzofuran intermediate 2 and diverse aldehydes readily afforded the novel dihydropyranoaurone analogs. Evaluation of the synthesized dihydropyranoaurone derivatives and related compounds regarding their inhibiting inducible nitric oxide synthase and nitrite production of lipopolysaccaride-stimulated RAW 264...
April 10, 2017: Archives of Pharmacal Research
https://www.readbyqxmd.com/read/28397192/effects-of-asarinin-on-dopamine-biosynthesis-and-6-hydroxydopamine-induced-cytotoxicity-in-pc12-cells
#17
Hyun Jin Park, Kyung Sook Lee, Ting Ting Zhao, Kyung Eun Lee, Myung Koo Lee
This study investigated the effects of asarinin on dopamine biosynthesis and 6-hydroxydopamine (6-OHDA)-induced cytotoxicity in rat adrenal pheochromocytoma (PC12) cells. Treatment with asarinin (25-50 μM) increased intracellular dopamine levels and enhanced L-DOPA-induced increases in dopamine levels. Asarinin (25 μM) induced cyclic AMP-dependent protein kinase A (PKA) signaling, leading to increased cyclic AMP-response element binding protein (CREB) and tyrosine hydroxylase (TH) phosphorylation, which in turn stimulated dopamine production...
April 10, 2017: Archives of Pharmacal Research
https://www.readbyqxmd.com/read/28386742/4-parvifuran-inhibits-metastatic-and-invasive-actions-through-the-jak2-stat3-pathway-in-osteosarcoma-cells
#18
Hyung-Mun Yun, Kyung-Ran Park, Tran Hong Quang, Hyuncheol Oh, Jin Tae Hong, Youn-Chul Kim, Eun-Cheol Kim
This study was performed to examine the anticancer and anti-metastatic effects of 4-parvifuran (PVN), a novel flavonoid isolated from the heartwood of Dalbergia odorifera, and to study its underlying signaling pathway in human osteosarcoma cells. In the present study, PVN was found to inhibit cell proliferation in a concentration- and time-dependent manner in the human osteosarcoma cell lines studied (MG-63 and U-2 OS) and induce apoptosis, as evidenced by Annexin V(+) and TUNEL(+) cells. Cleaved poly (ADP-ribose) polymerase (PARP) and caspase-3 were up-regulated while anti-apoptotic proteins including Bcl-2, Bcl-xL, and survivin were down-regulated after treatment with PVN...
April 6, 2017: Archives of Pharmacal Research
https://www.readbyqxmd.com/read/28378219/cardioprotective-effect-of-kr-33889-a-novel-parp-inhibitor-against-oxidative-stress-induced-apoptosis-in-h9c2-cells-and-isolated-rat-hearts
#19
Eun-Seok Park, Do-Hyun Kang, Jun Chul Kang, Yong Chang Jang, Min-Ju Lee, Hun-Jong Chung, Kyu Yang Yi, Dae-Eun Kim, Bokyung Kim, Hwa-Sup Shin
Oxidative stress plays a critical role in cardiac injury during ischemia/reperfusion (I/R). Despite a potent cardioprotective activity of KR-33889, a novel poly (ADP-ribose) polymerase inhibitor, its underlying mechanism remains unresolved. This study was designed to investigate the protective effects of KR-33889 against oxidative stress-induced apoptosis in rat cardiomyocytes H9c2 cells and isolated rat hearts. H2O2 caused severe injury to H9c2 cells, mainly due to apoptosis, as revealed by TUNEL assay. However, KR-33889 pretreatment significantly attenuated H2O2-induced apoptosis of H9c2 cells, which was accompanied by decrease in expression of both cleaved caspase-3 and Bax and increase in Bcl-2 expression and the ratio of Bcl-2/Bax...
April 4, 2017: Archives of Pharmacal Research
https://www.readbyqxmd.com/read/28299617/methyl-caffeate-and-some-plant-constituents-inhibit-age-related-inflammation-effects-on-senescence-associated-secretory-phenotype-sasp-formation
#20
Hyun Lim, Byung Kyu Park, Sook Young Shin, Yong Soo Kwon, Hyun Pyo Kim
During aging, cells secrete molecules called senescence-associated secretory phenotype (SASP). They constitute chronic low-grade inflammation environment to adjacent cells and tissues. In order to find inhibiting agents of SASP formation, 113 plant constituents were incubated with BJ fibroblasts for 6 days after treatment with bleomycin. Several plant constituents showed considerable inhibition of IL-6 production, a representative SASP marker. These plant constituents included anthraquinones such as aurantio-obtusin, flavonoids including astragalin, iristectorigenin A, iristectorigenin B, linarin, lignans including lariciresinol 9-O-glucoside and eleutheroside E, phenylpropanoids such as caffeic acid and methyl caffeate, steroid (ophiopogonin), and others like centauroside, rhoifolin and scoparone...
April 2017: Archives of Pharmacal Research
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