journal
MENU ▼
Read by QxMD icon Read
search

Pharmacology

journal
https://www.readbyqxmd.com/read/28334726/preparation-characterization-and-anti-ulcer-efficacy-of-sanguinarine-loaded-solid-lipid-nanoparticles
#1
Qing Sun, Weifeng Li, Huani Li, Xiumei Wang, Yu Wang, Xiaofeng Niu
AIM: This study was designed to develop sanguinarine-loaded solid lipid nanoparticles (SG-SLNs) and investigate its gastroprotective effect on ethanol-induced gastric mucosal lesions in mice. METHODS: SG-SLNs were prepared by high temperature melt-cool solidification method using glycerol monostearate as the lipid and a combination of lecithin with poloxamer 188 as the surfactants. Solid lipid nanoparticles (SLNs) were designed at varying lipid concentrations (5, 10, 15, and 20 mg/mL), surfactant mixture concentrations (6, 12, and 18 mg/mL), and drug contents (5, 10, 15, and 20 mg/mL) in "one factor at a time" fashion...
March 24, 2017: Pharmacology
https://www.readbyqxmd.com/read/28329747/influence-of-dipeptidyl-peptidase-iv-inhibitor-sitagliptin-on-extracellular-signal-regulated-kinases-1-2-signaling-in-rats-with-diabetic-nephropathy
#2
Xiaojun Ren, Gaohong Liu, Yanhong Wang, Wan Zhang, Fuping Xue, Rongshan Li, Weimin Yu
The protective effects of sitagliptin on the kidneys of rats with diabetic nephropathy (DN) and its influence on extracellular signal-regulated kinases 1/2 (ERK1/2) signaling were investigated. Male Wistar rats (n = 40) were randomly assigned to normal control, DN, low-dose sitagliptin intervention (ST1), or high-dose sitagliptin intervention (ST2) groups. Animals were euthanized after a 16-week treatment, and blood glucose (BG), glycosylated hemoglobin (HbA1c), urinary albumin excretion rate (AER), serum creatinine (Scr), creatinine clearance rate (Ccr), active glucagon-like peptide-1 (GLP-1) levels, kidney hypertrophy index, and renal pathohistology were determined...
March 23, 2017: Pharmacology
https://www.readbyqxmd.com/read/28268217/a-phenanthrene-derivative-5-7-dimethoxy-1-4-phenanthrenequinone-inhibits-cell-adhesion-molecule-expression-and-migration-in-vascular-endothelial-and-smooth-muscle-cells
#3
Huey-Ming Lo, Tsong-Long Hwang, Wen-Bin Wu
The activation of endothelial cells (ECs) and migration of vascular smooth muscle cells (VSMCs) have played a crucial role in monocyte chemotaxis/adhesion and intima thickening during vascular injury and atherosclerosis, respectively. Several phenanthrenes isolated from plants and natural products have been shown to possess different bioactivities such as anti-platelet aggregation and anti-inflammation. The current study was designated to investigate the effects of a phenanthrene derivative, 5,7-dimethoxy-1,4-phenanthrenequinone (DMPQ), on cell adhesion molecule (CAM) expression in vascular ECs and migration in VSMCs...
March 8, 2017: Pharmacology
https://www.readbyqxmd.com/read/28253499/repeated-cold-stress-reduces-cyclophosphamide-induced-cystitis-bladder-pain-and-macrophage-activity-in-mice
#4
Maho Tsubota, Tomoyoshi Miyamoto, Saki Hiruma, Haruka Saeki, Takaya Miyazaki, Fumiko Sekiguchi, Yoshinori Funakami, Atsufumi Kawabata
We examined the effect of repeated cold (RC) stress on cyclophosphamide (CPA)-induced cystitis/bladder pain in mice, in relation to macrophage activity. CPA, given i.p. at 400 mg/kg, caused bladder pain symptoms accompanying cystitis in both unstressed and RC-stressed mice, which were prevented by the macrophage inhibitor minocycline. A low dose, that is, 200 mg/kg, of CPA still produced bladder pain symptoms in unstressed but not RC-stressed mice. Lipopolysaccharide-induced cytokine production in peritoneal macrophages from RC-stressed mice was less than that from unstressed mice...
March 3, 2017: Pharmacology
https://www.readbyqxmd.com/read/28253495/tacrolimus-triggers-transient-receptor-potential-vanilloid-1-dependent-relapse-of-pancreatitis-related-pain-in-mice
#5
Yuka Terada, Maho Tsubota, Hiiragi Sugo, Kohei Wakitani, Fumiko Sekiguchi, Kyoichi Wada, Mitsutaka Takada, Akira Oita, Atsufumi Kawabata
Transient receptor potential vanilloid-1 (TRPV1) expressed in nociceptors is directly phosphorylated and activated by protein kinase C, and involved in the signaling of pancreatic pain. On the other hand, Cav3.2 T-type Ca2+ channels expressed in nociceptors are functionally upregulated by phosphorylation with protein kinase A and also play a role in pancreatitis-related pain. Calcineurin, a phosphatase, negatively regulates various channel functions including TRPV1, and calcineurin inhibitor-induced pain syndrome by tacrolimus, a calcineurin inhibitor, used as an immunosuppressant, has been a clinical problem...
March 3, 2017: Pharmacology
https://www.readbyqxmd.com/read/28249288/responsiveness-of-coronary-arteries-to-nitroglycerin-under-hypoxia-the-importance-of-the-endothelium
#6
Masashi Tawa, Takashi Shimosato, Hiroshi Sakonjo, Tomio Okamura
BACKGROUND/AIMS: Nitroglycerin is widely used as a coronary vasodilator in the treatment of ischemic heart diseases. This study investigated the influence of hypoxia on nitroglycerin-induced relaxation in endothelium-intact and -denuded rabbit, monkey, and porcine coronary arteries. METHODS: Helically cut strips of coronary arteries were suspended in organ chambers, and isometric tension was recorded. RESULTS: Nitroglycerin concentration dependently relaxed endothelium-intact rabbit coronary arteries, which were not different under normoxic and hypoxic conditions...
March 2, 2017: Pharmacology
https://www.readbyqxmd.com/read/28219076/effect-of-n-benzylpiperazine-its-metabolite-n-benzylethylenediamine-and-its-disubstituted-analogue-n-n-dibenzylpiperazine-on-the-acquisition-formation-and-consolidation-of-memory-in-mice
#7
Juan Carlos Castillo-Hernández, Josué A Velázquez-Moyado, Adelfo Reyes-Ramírez, Elena G Ramírez-López, Martín González-Andrade, Andrés Navarrete
BACKGROUND: N-benzylpiperazine (BZP) belongs to a class of piperazine derivatives (PZDs) that have emerged as recreational drugs. These compounds increase the release of dopamine and serotonin. BZP mimics the psychoactive effects of 3,4-methylenedioxymethylamphetamine. BZP is metabolized to N-benzylethylenediamine (BEDA) and benzylamine. The compound N,N'-dibenzylpiperazine (DBZP) is obtained as a byproduct during the synthesis of BZP. Some PZDs have shown effects on memory; however, there are no previous reports on the activity of BZP, BEDA, and DBZP on memory or on a description of their neuropharmacological profile...
February 21, 2017: Pharmacology
https://www.readbyqxmd.com/read/28214870/the-inhibitory-effect-of-s-777469-a-cannabinoid-type-2-receptor-agonist-on-skin-inflammation-in-mice
#8
Takayo Haruna, Masahiko Soga, Yasuhide Morioka, Kinichi Imura, Yoko Furue, Mina Yamamoto, Jun Hayakawa, Masashi Deguchi, Akinori Arimura, Kiyoshi Yasui
We investigated the effects of S-777469 (1-[[6-Ethyl-1-[4-fluorobenzyl]-5-methyl-2-oxo-1, 2-dihydropyridine-3-carbonyl]amino]-cyclohexanecarboxylic acid), a novel cannabinoid type 2 receptor (CB2) agonist, on 1-fluoro-2,4-dinitrobenzene (DNFB)-induced ear inflammation and mite antigen-induced dermatitis in mice. The oral administration of S-777469 significantly suppressed DNFB-induced ear swelling in a dose-dependent manner. In addition, S-777469 significantly alleviated mite antigen-induced atopic dermatitis-like skin lesions in NC/Nga mice...
February 18, 2017: Pharmacology
https://www.readbyqxmd.com/read/28208135/abcb1-and-slco1b3-gene-polymorphisms-and-their-impact-on-digoxin-pharmacokinetics-in-atrial-fibrillation-patients-among-the-tunisian-population
#9
Nejia Tounsi, Imen Trabelsi, Emna Kerkeni, Mohamed Habib Grissa, Nizar Fredj, Adel Sekma, Malek Mzali, Ilhem Hellara, Kamel Monastiri, Wahiba Douki, Semir Nouira
BACKGROUND: Digoxin is a substrate of P-glycoprotein (P-gp) and organic anion transporting polypeptide transporters that are encoded by ABCB1 and SLCO1B3 genes. Genetic polymorphisms in both genes may explain inter-individual variability of serum digoxin concentration (SDC). This study evaluates the possible effect of the most common ABCB1 and SLCO1B3 polymorphisms on SDC after a single oral dose of digoxin in Tunisian atrial fibrillation (AF) patients. METHODS: ABCB1 and SLCO1B3 genotypes were analyzed in 102 patients with AF who received digoxin (0...
February 17, 2017: Pharmacology
https://www.readbyqxmd.com/read/28147362/hochuekkito-a-japanese-herbal-medicine-restores-metabolic-homeostasis-between-mitochondrial-and-glycolytic-pathways-impaired-by-influenza-a-virus-infection
#10
Keita Takanashi, Katsuaki Dan, Sho Kanzaki, Hideki Hasegawa, Kenji Watanabe, Kaoru Ogawa
BACKGROUND: Hochuekkito (HKT), a traditional Japanese herbal medicine (Kampo), has been used to treat symptoms of several diseases. In a recent clinical study, HKT was shown to be protective against the influenza virus infection. However, the underlying mechanism of the prophylactic effect is not clear. Mitochondrial and glycolytic pathways play important roles in cellular energy metabolism to maintain biological functions. These metabolic pathways are affected by the influenza virus infection...
February 2, 2017: Pharmacology
https://www.readbyqxmd.com/read/28147361/enantioselective-effect-of-flurbiprofen-on-lithium-disposition-in-rats
#11
Yuichi Uwai, Masashi Matsumoto, Tatsuya Kawasaki, Tomohiro Nabekura
AIMS: Lithium is administered for treating bipolar disorders and is mainly excreted into urine. Nonsteroidal anti-inflammatory drugs inhibit this process. In this study, we examined the enantioselective effect of flurbiprofen on the disposition of lithium in rats. METHODS: Pharmacokinetic experiments with lithium were performed. RESULTS: Until 60 min after the intravenous administration of lithium chloride at 30 mg/kg as a bolus, 17.8% of lithium injected was recovered into the urine...
February 2, 2017: Pharmacology
https://www.readbyqxmd.com/read/28132058/the-inhibitory-effects-of-ketamine-on-human-hyperpolarization-activated-cyclic-nucleotide-gated-channels-and-action-potential-in-rabbit-sinoatrial-node
#12
Junlian Xing, Chi Zhang, Wanzhen Jiang, Jie Hao, Zhipei Liu, Antao Luo, Peihua Zhang, Xinrong Fan, Jihua Ma
AIMS: To investigate the effects of ketamine on human hyperpolarization-activated cyclic nucleotide-gated (hHCN) 1, 2, 4 channel currents expressed in Xenopus oocytes and spontaneous action potentials (APs) of rabbit sinoatrial node (SAN). METHODS: The 2-electrode voltage clamp and standard microelectrode techniques were respectively applied to record hHCN channels currents expressed in Xenopus oocytes and APs of SAN separated from rabbit heart. RESULTS: Ketamine (1-625 µmol/L) blocked hHCN1, 2, and 4 currents with IC50 of 67...
January 28, 2017: Pharmacology
https://www.readbyqxmd.com/read/28125813/signal-transduction-underlying-the-inhibitory-mechanism-of-fluoxetine-on-electrical-field-stimulation-response-in-rat-ileal-smooth-muscle
#13
Phyu Phyu Khin, Tin Sandar Zaw, Uy Dong Sohn
Fluoxetine (FLX), a well-known antidepressant drug under the class of selective serotonin reuptake inhibitor, exerts its action by inhibiting the reuptake of serotonin selectively. In some studies, it has been demonstrated that FLX relaxes the intestinal smooth muscle. In this study, we aimed at studying the signal transduction pathway underlying the muscle relaxation effect of FLX on electrically stimulated rat ileal muscle contraction. To investigate the possible mechanism involved, various antagonists were used...
January 27, 2017: Pharmacology
https://www.readbyqxmd.com/read/28110334/muscone-induces-cyp1a2-and-cyp3a4-enzyme-expression-in-l02-human-liver-cells-and-cyp1a2-and-cyp3a11-enzyme-expression-in-kunming-mice
#14
Sha Liu, Yujie Cheng, Menglin Rao, Mi Tang, Zhi Dong
AIM: To examine the effect of synthetic muscone on the expression of CYP1A2 and CYP3A4 enzymes in human liver L02 cells and in the liver tissue of Kunming mice. METHODS: The L02 hepatic cell line was used to study the effect of low (10-4 μmol/L), middle (10-3 μmol/L), and high concentrations (10-2 μmol/L) of muscone on the expression of CYP1A2 and CYP3A4 enzymes. In addition, the cytochrome P450 (CYP) expression was investigated in Kunming mice after the administration of 10 mg/kg (low), 50 mg/kg (middle), and 100 mg/kg (high) dose of muscone for 6 days...
January 21, 2017: Pharmacology
https://www.readbyqxmd.com/read/28052289/the-pharmacokinetic-interaction-study-between-carvedilol-and-bupropion-in-rats
#15
Maria Bianca Abrudan, Dana Maria Muntean, Ana Maria Gheldiu, Maria Adriana Neag, Laurian Vlase
BACKGROUND/AIMS: The effects of multiple-dose bupropion on the pharmacokinetics of single-dose carvedilol were investigated in order to evaluate this possible drug-drug interaction. METHODS: A preclinical study was conducted among white male Wistar rats. Each rat was cannulated on the femoral vein prior to being connected to BASi Culex ABC®. During the reference period, each rat received an intravenous and an oral dose of 3.57 mg/kg body weight (b.w.) carvedilol, at 2 days distance...
2017: Pharmacology
https://www.readbyqxmd.com/read/28049212/enhanced-hyperthermic-responses-to-lipopolysaccharide-in-mice-exposed-to-repeated-cold-stress
#16
Tomoyoshi Miyamoto, Yoshinori Funakami, Erika Kawashita, Shiori Tomita, Ai Nomura, Nanako Sugimoto, Haruka Saeki, Takaya Miyazakia, Maho Tsubota, Seiji Ichida, Atsufumi Kawabata
Lipopolysaccharide (LPS) induces hyperthermia accompanied by various other systemic inflammatory symptoms. The rodents exposed to repeated cold (RC) stress according to a specific schedule are useful as experimental models for autonomic imbalance or fibromyalgia. It is now proven that RC-stressed mice exhibit tolerance to LPS, we examined thermal responses to LPS challenge in RC-stressed mice by monitoring core temperature using the telemetry system. Systemic administration of LPS caused bimodal hyperthermic responses in RC-stressed and unstressed mice...
2017: Pharmacology
https://www.readbyqxmd.com/read/28049205/bufalin-inhibits-the-inflammatory-effects-in-asthmatic-mice-through-the-suppression-of-nuclear-factor-kappa-b-activity
#17
Zibierguli Zhakeer, Maierbati Hadeer, Zumulaiti Tuerxun, Kelibiena Tuerxun
Asthma is an inflammatory airway disease characterized by increased infiltration of inflammatory cells into the airways and poor respiratory function. Bufalin is one of the biological ingredients obtained from Chansu. Bufalin was found to possess various pharmacological properties including anti-inflammatory activities. However, the effect of bufalin treatment on asthma has not yet been reported. Therefore, this study aimed to investigate the inhibitory effect of bufalin on asthmatic response in a murine model...
2017: Pharmacology
https://www.readbyqxmd.com/read/28049198/mechanism-of-2-3-4-5-tetrahydroxystilbene-2-o-%C3%AE-d-glucoside-induced-upregulation-of-glutamate-transporter-1-protein-expression-in-mouse-primary-astrocytes
#18
Xiangfan Chen, Wenfeng Hu, Xu Lu, Bo Jiang, Jili Wang, Wei Zhang, Chao Huang
Glutamate transporter-1 (GLT-1), a major glutamate transporter expressed in astrocytes, takes up excess glutamate from the micro-environment in order to prevent excitotoxicity. Drugs that increase GLT-1 expression may have therapeutic effects in disorders associated with neuronal excitotoxicity. 2,3,4',5-tetrahydroxystilbene 2-O-β-D-glucoside (TSG), a monomer of stilbene from polygonummultiflorum, exerts neuroprotection in a range of experimental models such as Alzheimer's disease and brain ischemia. In this study, we evaluated the effect of TSG on GLT-1 protein expression in mouse primary-cultured astrocytes...
2017: Pharmacology
https://www.readbyqxmd.com/read/28049192/combined-memantine-and-donepezil-treatment-improves-behavioral-and-psychological-symptoms-of-dementia-like-behaviors-in-olfactory-bulbectomized-mice
#19
Yasushi Yabuki, Kazuya Matsuo, Koga Hirano, Yasuharu Shinoda, Shigeki Moriguchi, Kohji Fukunaga
Memantine, an uncompetitive N-methyl-D-aspartate receptor antagonist, and the cholinesterase inhibitor, donepezil, are approved in most countries for treating moderate-to-severe Alzheimer's disease (AD). These drugs have different molecular targets; thus, it is expected that the effects of combined treatment would be synergistic. Some reports do show memantine/donepezil synergy in ameliorating cognition in AD model animals, but their combined effects on behavioral and psychological symptoms of dementia (BPSD)-like behaviors have not been addressed...
2017: Pharmacology
https://www.readbyqxmd.com/read/28049190/the-efficacy-of-rituximab-combined-with-131i-for-ophthalmic-outcomes-of-graves-ophthalmopathy-patients
#20
RANDOMIZED CONTROLLED TRIAL
Jiagen Li, Zhangsheng Xiao, Xianjie Hu, Yun Li, Xing Zhang, Songze Zhang, Weikun Gong, Jianqiang Zhao, Xuemei Ye
PURPOSE: The purpose of this study is to examine the effectiveness of introducing both rituximab (RTX) and 131I for active Graves' ophthalmopathy (GO) with hyperthyroidism. METHODS: In total, 217 patients suffering from active GO with hyperthyroidism were included in this research. All subjects were randomly assigned to 3 groups. Patients in group A solely received 131I treatment; group B1 underwent a methylprednisolone treatment in combination with 131I treatment; and group B2 received an RTX in combination with 131I treatment...
2017: Pharmacology
journal
journal
21952
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"