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1.
Saeedeh Noushini Eskandar Alipour Saeed Emami Maliheh Safavi Sussan Kabudanian Ardestani Ahmad Reza Gohari Abbas Shafiee Alireza Foroumadi 《Daru : journal of Faculty of Pharmacy, Tehran University of Medical Sciences》2013,21(1):31
Background and the purpose of the study
There has been increscent interest in the field of cancer chemotherapy by discovery and development of novel agents with high efficacy, low toxicity, and minimum side effects. In order to find new anticancer agents, we replaced the pyrazolone part of well-known cytotoxic agent SJ-172550 with 7-methoxychroman-4-one. Thus, a novel series of 3-benzylidene-4-chromanones were synthesized and tested in vitro against human cancer cell lines.Methods
The title compounds were prepared by condensation of 7-methoxychroman-4-one with suitable aldehydes in appropriate alcohol in the presence of gaseous HCl. The antiproliferative activity of target compounds were evaluated against MDA-MB-231 (breast cancer), KB (nasopharyngeal epidermoid carcinoma) and SK-N-MC (human neuroblastoma) cell lines using MTT assay.Results
Although the direct analog of SJ-172550 (compound 5d) did not show any cytotoxic activity against tested cell lines, but 2-(2-chloro-6-methoxyphenoxy)acetic acid methyl ester analog 5c showed some activity against MDA-MB-231 and SK-N-MC cells. Further modification of compound 5c resulted in the 3-chloro-4,5-dimethoxybenzylidene derivative 5b which demonstrated better cytotoxic profile against all tested cell lines (IC50 values = 7.56–25.04 μg/ml).Conclusion
The results demonstrated that the cytotoxic activity of compound 5b against MDA-MB-231 and SK-N-MC cells is more than etoposide. Therefore, compound 5b prototype could be considered as novel cytotoxic agent for further developing new anticancer chemotherapeutics. 相似文献2.
Ying Li Han-lin Ma Lei Han Wei-yong Liu Bao-xiang Zhao Shang-li Zhang Jun-ying Miao 《Acta pharmacologica Sinica》2013,34(7):960-968
Aim:
To investigate the effects of 7 novel 1-ferrocenyl-2-(5-phenyl-1H-1,2,4-triazol-3-ylthio) ethanone derivatives on human lung cancer cells in vitro and to determine the mechanisms of action.Methods:
A549 human lung cancer cells were examined. Cell viability was analyzed with MTT assay. Cell apoptosis and senescence were examined using Hoechst 33258 and senescence-associated-β-galactosidase (SA-β-gal) staining, respectively. LDH release was measured using a detection kit. Cell cycle was analyzed using a flow cytometer. Intracellular ROS level was measured with the 2′,7′-dichlorodihydrofluorescein probe. Phosphorylation of p38 was determined using Western blot.Results:
Compounds 5b, 5d, and 5e (40 and 80 μmol/L) caused significant decrease of A549 cell viability, while other 4 compounds had no effect on the cells. Compounds 5b, 5d, and 5e (80 μmol/L) induced G1-phase arrest (increased the G1 population by 22.6%, 24.23%, and 26.53%, respectively), and markedly increased SA-β-gal-positive cells. However, the compounds did not cause nuclear DNA fragmentation and chromatin condensation in A549 cells. Nor did they affect the release of LDH from the cells. The compounds significantly elevated the intracellular ROS level, decreased the mitochondrial membrane potential, and increased p38 phosphorylation in the cells. In the presence of the antioxidant and free radical scavenger N-acetyl-L-cysteine (10 mmol/L), above effects of compounds 5b, 5d, and 5e were abolished.Conclusion:
The compounds 5b, 5d, and 5e cause neither apoptosis nor necrosis of A549 cells, but exert anti-cancer effect via inducing G1-phase arrest and senescence through ROS/p38 MAP-kinase pathway. 相似文献3.
Amir Gharib Zohreh Faezizadeh Seyed Ali Reza Mesbah-Namin Ramin Saravani 《Daru : journal of Faculty of Pharmacy, Tehran University of Medical Sciences》2014,22(1):44
Background
Artemisinin is the major sesquiterpene lactones in sweet wormwood (Artemisia annua L.), and its combination with transferrin exhibits versatile anti-cancer activities. Their non-selective targeting for cancer cells, however, limits their application. The aim of this study was to prepare the artemisinin and transferrin-loaded magnetic nanoliposomes in thermosensitive and non-thermosensitive forms and evaluate their antiproliferative activity against MCF-7 and MDA-MB-231 cells for better tumor-targeted therapy.Methods
Artemisinin and transferrin-loaded magnetic nanoliposomes was prepared by extrusion method using various concentrations of lipids. These formulations were characterized for particle size, zeta potential, polydispersity index and shape morphology. The artemisinin and transferrin-loading efficiencies were determined using HPLC. The content of magnetic iron oxide in the nanoliposomes was analysed by spectrophotometry. The in vitro release of artemisinin, transferrin and magnetic iron oxide from vesicles was assessed by keeping of the nanoliposomes at 37°C for 12 h. The in vitro cytotoxicity of prepared nanoliposomes was investigated against MCF-7 and MDA-MB-231 cells using MTT assay.Results
The entrapment efficiencies of artemisinin, transferrin and magnetic iron oxide in the non-thermosensitive nanoliposomes were 89.11% ± 0.23, 85.09% ± 0.31 and 78.10% ± 0.24, respectively. Moreover, the thermosensitive formulation showed a suitable condition for thermal drug release at 42°C and exhibited high antiproliferative activity against MCF-7 and MDA-MB-231 cells in the presence of a magnetic field.Conclusions
Our results showed that the thermosensitive artemisinin and transferrin-loaded magnetic nanoliposomes would be an effective choice for tumor-targeted therapy, due to its suitable stability and high effectiveness. 相似文献4.
Giulia Letizia Mauro Pietro Cataldo Giuseppa Barbera Antonio Sanfilippo 《Drugs in R&D》2014,14(1):1-7
Background and Objective
Since oxidative stress plays a pathogenetic role in chronic neck pain (CNP), we investigated whether a combination of α-lipoic acid (ALA) and superoxide dismutase (SOD) might improve pain control and the efficacy of physiotherapy (“multimodal therapy”) in patients with CNP.Setting
This study was conducted in the Rehabilitation Unit of the Department of Surgical and Oncological Sciences at the University Policlinic in Palermo, Italy.Design and Patients
This was a prospective, randomized, open study in outpatients.Intervention
Patients randomly received either physiotherapy alone (group 2; n = 45) or a combination of ALA 600 mg and SOD 140 IU daily in addition to physiotherapy (group 1; n = 51), for 60 days. Pain was assessed by a visual analogue scale (VAS) and a modified Neck Pain Questionnaire (mNPQ). Treatment compliance and safety were also evaluated.Results
Both groups experienced a significant reduction in the VAS and mNPQ scores after 1 month; however, while no further improvement was observed in group 2 at 60 days, group 1 showed a further VAS reduction (p < 0.001). In addition, in the mNPQ at 60 days, more patients in group 1 than in group 2 reported that their neck pain was improved (p < 0.01), and they showed greater compliance with prescribed physiotherapy (p = 0.048). No drug reaction was observed.Conclusion
Use of ALA/SOD in combination with physiotherapy may be a useful approach to CNP, being antioxidants that act on nerve inflammation and disease progression.Clinical Rehabilitation Impact
These preliminary observations suggest that some interesting goals (better pain control and physical wellbeing) can be achieved by multimodal therapy in CNP patients. 相似文献5.
Han Li Guo-feng Pan Zhen-zhou Jiang Jing Yang Li-xin Sun Lu-yong Zhang 《Acta pharmacologica Sinica》2015,36(5):606-613
Aim:
To investigate the anticancer mechanisms of triptolide, a diterpenoid isolated from the plant Tripterygium wilfordii Hook F, against human breast cancer cells and the involvement of the estrogen receptor-α (ERα)-mediated signaling pathway in particular.Methods:
Human breast cancer ERα-positive MCF-7 cells and ERα-negative MDA-MB-231 cells were tested. PrestoBlue assay was used to evaluate the cell viability. The levels of ERα mRNA and protein were detected with real-time PCR and immunoblotting, respectively. Mouse models of MCF-7 or MDA-MB-231 xenograft tumors were treated with triptolide (0.4 mg·kg−1·d−1, po) or a selective estrogen receptor modulator tamoxifen (mg·kg−1·d−1, po) for 3 weeks, and the tumor weight and volume were measured.Results:
Triptolide (5–200 nmol/L) dose-dependently inhibited the viability of both MCF-7 and MDA-MB-231 cells, with a more potent inhibition on MCF-7 cells. Knockdown of ERα in MCF-7 cells by siRNA significantly attenuated the cytotoxicity of triptolide, whereas overexpression of ERα in MDA-MB-231 cells markedly enhanced the cytotoxicity. Triptolide dose-dependently decreased the expression of ERα in MCF-7 cells and MCF-7 xenograft tumors. Furthermore, treatment of MCF-7 cells with triptolide inhibited the phosphorylation of ERK1/2 in dose- and time-dependent manners. In the mice xenografted with MCF-7 cells, treatment with triptolide or tamoxifen resulted in significant reduction in the tumor weight and volume. Similar effects were not obtained in the mice xenografted with MDA-MB-231 cells.Conclusion:
The anticancer activity of triptolide against ERα-positive human breast cancer is partially mediated by downregulation of the ERα-mediated signaling pathway. 相似文献6.
7.
Zu-long Liu Wei Tian Yong Wang Shan Kuang Xiao-min Luo Qiang Yu 《Acta pharmacologica Sinica》2012,33(2):261-270
Aim:
To evaluate the anti-cancer effects of a new sulfonamide derivative, 2-(N-(3-chlorophenyl)-4-methoxyphenylsulfonamido)-N-hydroxypropanamide (MPSP-001).Methods:
Human cancer cell lines (HepG2, THP-1, K562, HGC-27, SKOV3, PANC-1, SW480, Kba, HeLa, A549, MDA-MB-453, and MCF-7) were examined. The cytotoxicity of MPSP-001 was evaluated using the WST-8 assay. Cell cycle distribution was examined with flow cytometry. Mitotic spindle formation was detected using immunofluorescence microscopy. Apoptosis-related proteins were examined with Western blot using specific phosphorylated protein antibodies. Competitive tubulin-binding assay was performed to test whether the compound competitively bound to the colchicine site. Molecular docking was performed to explore the possible binding conformation.Results:
MPSP-001 potently inhibited the growth of the 12 different types of human cancer cells with the IC50 values ranging from 1.9 to 15.7 μmol/L. The compound exerted potent inhibition on the drug-resistant Kb/VCR and MCF-7/ADR cells, as on Kba and MCF-7 cells. In HeLa, HGC-27, A549, and other cells, the compound (5 μmol/L) caused cell cycle arrest at the G2/M phase, and subsequently induced cell apoptosis. In Hela cells, it prevented the mitotic spindle formation. Furthermore, the compound dose-dependently inhibited polymerization of tubulin in vitro, and directly bound to the colchicine-site of β-tubulin. Molecular docking predicted that the compound may form two hydrogen bonds to the binding pocket. The compound showed synergistic effects with colchicine and taxol in blocking mitosis of HeLa cells.Conclusion:
MPSP-001 shows a broad-spectrum of anti-tumor efficacy in vitro and represents a novel structure with anti-microtubule activity. 相似文献8.
Jin-zi Ji Ke-jing Lao Jie Hu Tao Pang Zhen-zhou Jiang Hao-liang Yuan Jing-shan Miao Xin Chen Shan-shan Ning Hua Xiang Yu-meng Guo Ming Yan Lu-yong Zhang 《Acta pharmacologica Sinica》2014,35(8):1082-1092
Aim:
Aromatase is an important target for drugs to treat hormone-dependent diseases, including breast cancer. The aim of this study was to develop a homogeneous time-resolved fluorescence (HTRF) aromatase assay suitable for high-throughput screening (HTS).Methods:
A 384-well aromatase HTRF assay was established, and used to screen about 7000 compounds from a compound library. Anti-proliferation activity of the hit was evaluated using alamarBlue(R) assay in a hormone-dependent breast cancer cell line T47D. Molecular docking was conducted to elucidate the binding mode of the hit using the Discovery Studio program.Results:
The Z′ value and signal to background (S/B) ratio were 0.74 and 5.4, respectively. Among the 7000 compounds, 4 hits (XHN22, XHN26, XHN27 and triptoquinone A) were found to inhibit aromatase with IC50 values of 1.60±0.07, 2.76±0.24, 0.81±0.08 and 45.8±11.3 μmol /L, respectively. The hits XHN22, XHN26 and XHN27 shared the same chemical scaffold of 4-imidazolyl quinoline. Moreover, the most potent hit XHN27 at 10 and 50 μmol/L inhibited the proliferation of T47D cells by 45.3% and 35.2%, respectively. The docking study revealed that XHN27 docked within the active site of aromatase and might form a hydrogen bond and had a π-cation interaction with amino acid residues of the protein.Conclusion:
XHN27, an imidazolyl quinoline derivative of flavonoid, is a potent aromatase inhibitor with anti-proliferation activity against breast cancer in vitro. The established assay can be used in HTS for discovering novel aromatase inhibitor. 相似文献9.
Objective
The aim of this study was to determine the efficacy of sustained-release fampridine (4-aminopyridine) in veterans with multiple sclerosis (MS) with limited ambulatory ability, and its impact on motor function in an outpatient setting.Design
Retrospective.Setting
Tertiary referral center [Veterans Affairs (VA) Medical Center].Participants
Veterans; 20 MS patients were prescribed dalfampridine (10 mg twice daily) due to their difficulty with walking based on patient and caregiver report and clinician impression of change in the ability to ambulate based on prior 10-meter (10M) and 2-minute walk tests (2MWTs).Intervention
Not applicable.Main Outcome Measures
The primary outcome measures were mean changes in walking speed (10M walk test), walking distance (2MWT), and Total Functional Independence Measure (TFIM). Improvement of >20 % in walking speed was indicated as a clinically meaningful change.Results
Treatment with dalfampridine resulted in significant improvement in walking speed and endurance (p < 0.05). Walking speed increased by 33 % and walking endurance by 31 %, representing clinically meaningful improvement. This change was not influenced by change in muscle tone. This improvement in mobility was associated with a clinically significant change in motor function. Adverse effects, including insomnia, dizziness, and headache, were experienced by five patients who discontinued the medication after a minimum of 4 weeks.Conclusion
Treatment with dalfampridine resulted in clinically relevant improvements in walking speed and endurance in MS patients with limited ambulation and helped improve their motor function.Electronic supplementary material
The online version of this article (doi:10.1007/s40268-013-0020-x) contains supplementary material, which is available to authorized users. 相似文献10.
D Fraga CIS Zanoni GA Rae CA Parada GEP Souza 《British journal of pharmacology》2009,157(8):1494-1501
Background and purpose:
The effects of centrally administered cannabinoids on body core temperature (Tc) and the contribution of endogenous cannabinoids to thermoregulation and fever induced by lipopolysaccharide (LPS) (Sigma Chem. Co., St. Louis, MO, USA) were investigated.Experimental approach:
Drug-induced changes in Tc of male Wistar rats were recorded over 6 h using a thermistor probe (Yellow Springs Instruments 402, Dayton, OH, USA) inserted into the rectum.Key results:
Injection of anandamide [(arachidonoylethanolamide (AEA); Tocris, Ellisville, MO, USA], 0.01–1 µg i.c.v. or 0.1–100 ng intra-hypothalamic (i.h.), induced graded increases in Tc (peaks 1.5 and 1.6°C at 4 h after 1 µg i.c.v. or 10 ng i.h.). The effect of AEA (1 µg, i.c.v.) was preceded by decreases in tail skin temperature and heat loss index (values at 1.5 h: vehicle 0.62, AEA 0.48). Bell-shaped curves were obtained for the increase in Tc induced by the fatty acid amide hydrolase inhibitor [3-(3-carbamoylphenyl)phenyl] N-cyclohexylcarbamate (Cayman Chemical Co., Ann Arbor, MI, USA) (0.001–1 ng i.c.v.; peak 1.9°C at 5 h after 0.1 ng) and arachidonyl-2-chloroethylamide (ACEA; Tocris) (selective CB1 agonist; 0.001–1 µg i.c.v.; peak 1.4°C 5 h after 0.01 µg), but (R,S)-(+)-(2-Iodo-5-nitrobenzoyl)-[1-(1-methyl-piperidin-2-ylmethyl)-1H-indole-3-yl] methanone (Tocris) (selective CB2 agonist) had no effect on Tc. AEA-induced fever was unaffected by i.c.v. pretreatment with 6-Iodo-2-methyl-1-[2-(4-morpholinyl)ethyl]-1H-indole-3-yl](4-methoxyphenyl) methanone (Tocris) (selective CB2 antagonist), but reduced by i.c.v. pretreatment with N-(piperidin-1-yl)-5-(4-iodophenyl)-1-(2,4-dichlorophenyl)-4-methyl-1H-pyrazole-3-carboxamide (AM251; Tocris) (selective CB1 antagonist). AM251 also reduced the fever induced by ACEA or LPS.Conclusions and implications:
The endogenous cannabinoid AEA induces an integrated febrile response through activation of CB1 receptors. Endocannabinoids participate in the development of the febrile response to LPS constituting a target for antipyretic therapy. 相似文献11.
Yi-ming Ma Yu-bo Zhou Chuan-ming Xie Dong-mei Chen Jia Li 《Acta pharmacologica Sinica》2012,33(3):407-417
Aim:
To identify a novel coumarin analogue with the highest anticancer activity and to further investigate its anticancer mechanisms.Methods:
The viability of cancer cells was investigated using the MTT assay. The cell cycle progression was evaluated using both flow cytometric and Western blotting analysis. Microtubule depolymerization was observed with immunocytochemistry in vivo and a tubulin depolymerization assay in vitro. Apoptosis was demonstrated using Annexin V/Propidium Iodide (PI) double-staining and sub-G1 analysis.Results:
Among 36 analogues of coumarin, 6-chloro-4-(methoxyphenyl) coumarin showed the best anticancer activity (IC50 value about 200 nmol/L) in HCT116 cells. The compound had a broad spectrum of anticancer activity against 9 cancer cell lines derived from colon cancer, breast cancer, liver cancer, cervical cancer, leukemia, epidermoid cancer with IC50 value of 75 nmol/L–1.57 μmol/L but with low cytotocitity against WI-38 human lung fibroblasts (IC50 value of 12.128 μmol/L). The compound (0.04–10 μmol/L) induced G2-M phase arrest in HeLa cells in a dose-dependent manner, which was reversible after the compound was removed. The compound (10–300 μmol/L) induced the depolymerization of purified porcine tubulin in vitro. Finally, the compound (0.04–2.5 μmol/L) induced apoptosis of HeLa cells in dose- and time-dependent manners.Conclusion:
6-Chloro-4-(methoxyphenyl) coumarin is a novel microtubule-targeting agent that induces G2–M arrest and apoptosis in HeLa cells. 相似文献12.
Radhe Shyam Bahare Swastika Ganguly Kiattawee Choowongkomon Supaporn Seetaha 《Daru : journal of Faculty of Pharmacy, Tehran University of Medical Sciences》2015,23(1)
Background
Structural modifications of thiazolidinediones at 3rd and 5th position have exhibited significant biological activities. In view of the facts, and based on in silico studies carried out on thiazolidine-2,4-diones as HIV-1- RT inhibitors, a novel series of 2,4-thiazolidinedione analogs have been designed and synthesized.Methods
Title compounds were prepared by the reported method. Conformations of the structures were assigned on the basis of results of different spectral data. The assay of HIV-1 RT was done as reported by Silprasit et al. Antimicrobial activity was determined by two fold serial dilution method. Docking study was performed for the highest active compounds by using Glide 5.0.Results
The newly synthesized compounds were evaluated for their HIV-1 RT inhibitory activity. Among the synthesized compounds, compound 24 showed significant HIV-1 RT inhibitory activity with 73% of inhibition with an IC50 value of 1.31 μM. Compound 10 showed highest activity against all the bacterial strains.A molecular modeling study was carried out in order to investigate the possible interactions of the highest active compounds 24, 10 and 4 with the non nucleoside inhibitory binding pocket(NNIBP) of RT, active site of GlcN-6-P synthase and cytochrome P450 14-α-sterol demethylase from Candida albicans (Candida P450DM) as the target receptors respectively using the Extra Precision (XP) mode of Glide software.Conclusion
A series of novel substituted 2-(5-benzylidene-2,4-dioxothiazolidin-3-yl)-N-(phenyl)propanamides (4–31) have been synthesized and evaluated for their HIV-1 RT inhibitory activity, antibacterial and antifungal activities. Some of the compounds have shown significant activity. Molecular docking studies showed very good interaction. 相似文献13.
Background
Although beta blockers (BBs) are established therapy in heart failure, some patients whose left ventricular ejection fraction (LVEF) initially increases on BB therapy experience a subsequent LVEF decline. This study aimed to evaluate the proportion of patients with non-ischemic cardiomyopathy (NICM) whose LVEF declines while on BB therapy and determine important predictors of LVEF decline.Methods
A retrospective analysis of 238 patients receiving a BB (carvedilol, metoprolol succinate, or tartrate), with an ejection fraction of ≤40 % and NICM, whose LVEF initially rose ≥5 % after 1 year of BB therapy, was conducted. Post-response LVEF decline ≥5 % to a final LVEF of ≤35 % was evaluated within 4 years of BB initiation.Results
In our study, we had 52 Caucasians (22 %), 78 Hispanics (33 %), and 108 African Americans (45 %). Overall, 32 patients (13.44 %) had post-response LVEF decline. The nadir LVEF of patients with post-response LVEF decline was 25 % (interquartile range 20–27). Compared with others, Hispanics had lower nadir LVEF (22 %, p < 0.001). Important predictors of LVEF decline were Hispanic race (odds ratio (OR) 6.094, p < 0.001), New York Heart Association (NYHA) class (OR 2.287, p < 0.05), baseline LVEF (OR 1.075, p < 0.05), and age (OR 0.933, p < 0.001).Conclusion
A significant proportion (13.44 %) of NICM patients with LVEF increase over 1 year of BB therapy experienced subsequent LVEF decline. Race, NYHA class, baseline LVEF, and age are important predictors of this decline. 相似文献14.
Diego J Martinel Lamas Maximo Croci Eliana Carabajal Ernesto J V Crescenti Lorena Sambuco Noelia A Massari Rosa M Bergoc Elena S Rivera Vanina A Medina 《British journal of pharmacology》2013,170(1):188-199
Background and Purpose
The presence of the histamine H4 receptor (H4R) was previously reported in benign and malignant lesions and cell lines derived from the human mammary gland. The aim of this work was to evaluate the effects of H4R ligands on the survival, tumour growth rate and metastatic capacity of breast cancer in an experimental model.Experimental Approach
Xenograft tumours of the highly invasive human breast cancer cell line MDA-MB-231 were established in immune deficient nude mice. The following H4R agonists were employed: histamine (5 mg kg−1), clozapine (1 mg kg−1) and the experimental compound JNJ28610244 (10 mg kg−1).Results
Data indicate that developed tumours were highly undifferentiated, expressed H4R and exhibited high levels of histamine content and proliferation marker (PCNA) while displaying low apoptosis. Mice of the untreated group displayed a median survival of 60 days and a tumour doubling time of 7.4 ± 0.6 days. A significant decrease in tumour growth evidenced by an augment of the tumour doubling time was observed in the H4R agonist groups (13.1 ± 1.2, P < 0.01 in histamine group; 15.1 ± 1.1, P < 0.001 in clozapine group; 10.8 ± 0.7, P < 0.01 in JNJ28610244 group). This effect was associated with a decrease in the PCNA expression levels, and also reduced intratumoural vessels in histamine and clozapine treated mice. Histamine significantly increased median survival (78 days; Log rank Mantel-Cox Test, P = 0.0025; Gehan-Breslow-Wilcoxon Test, P = 0.0158) and tumoural apoptosis.Conclusions and Implications
Histamine through the H4R exhibits a crucial role in tumour progression. Therefore, H4R ligands offer a novel therapeutic potential as adjuvants for breast cancer treatment.Linked Articles
This article is part of a themed issue on Histamine Pharmacology Update. To view the other articles in this issue visit http://dx.doi.org/10.1111/bph.2013.170.issue-1 相似文献15.
Doris Heger-Mahn Günther Pabst Angelika Dienel Sandra Schl?fke Christine Klipping 《Drugs in R&D》2014,14(4):265-272
Purpose
Silexan is an oral Lavender oil preparation with proven anxiolytic efficacy. Given the high prevalence of anxiety and restlessness in younger women, oral contraceptives and Silexan will likely be co-administered.Methods
A double-blind, randomised, 2-period crossover study was performed to investigate the effects of Silexan on the pharmacokinetics and pharmacodynamics of Microgynon®, a combination oral contraceptive containing ethinyl estradiol 0.03 mg (EE) and levonorgestrel 0.15 mg (LNG) in healthy, fertile, adult females. During 2 consecutive cycles of 28 days, oral contraception was given for 21 days combined with 1 × 160 mg/day Silexan or placebo. Plasma concentration–time profiles of EE and LNG were obtained on day 18 ± 1 up to 24 h after dosing. The primary outcome measure was the area under the concentration–time curve over a dosing interval of τ = 24 h (AUCτ) for EE and LNG plasma levels. An interaction with Silexan was formally excluded if the 90 % confidence interval for the AUCτ ratio during co-administration with Silexan or placebo was included within the range of 0.80–1.25. Secondary outcomes included EE and LNG peak concentration (Cmax) and time to Cmax (tmax), follicle size, endometrial thickness, the Hoogland score, and serum levels of estradiol, progesterone, and sex hormone-binding globulin.Results
A total of 24 women (mean age 27.3 years; mean body mass index 22.2 kg/m2) participated. The confidence intervals for the EE and LNG AUCτ and Cmax ratios fell within the pre-specified limits, indicating no interaction (point estimates [Silexan/placebo] AUCτ EE 0.97, LNG 0.94; Cmax EE 0.99, LNG 0.96). For LNG, tmax was slightly delayed. No secondary outcome indicated any impairment of contraceptive efficacy.Conclusions
Co-administration of Silexan did not affect the efficacy of a combination oral contraceptive containing EE and LNG and was well tolerated. 相似文献16.
Eskandar Alipour Zinatsadat Mousavi Zahra Safaei Mahboobeh Pordeli Maliheh Safavi Loghman Firoozpour Negar Mohammadhosseini Mina Saeedi Sussan Kabudanian Ardestani Abbas Shafiee Alireza Foroumadi 《Daru : journal of Faculty of Pharmacy, Tehran University of Medical Sciences》2014,22(1):41
Background
Homoisoflavonoids are naturally occurring compounds belong to flavonoid classes possessing various biological properties such as cytotoxicity. In this work, an efficient strategy for the synthesis of novel homoisoflavonoids, [1,3]dioxolo[4,5-g]chromen-8-ones, was developed and all compounds were evaluated for their cytotoxic activities on three breast cancer cell lines.Methods
Our synthetic route started from benzo[d][1,3]dioxol-5-ol which was reacted with 3-bromopropanoic acid followed by the reaction of oxalyl chloride to afford 6,7-dihydro-8H-[1,3]dioxolo[4,5-g]chromen-8-one. The aldol condensation of the later compound with aromatic aldehydes led to the formation of the title compounds. Five novel derivatives 4a-e were tested for their cytotoxic activity against three human breast cancer cell lines including MCF-7, T47D, and MDA-MB-231 using the MTT assay.Results
Among the synthesized compounds, 7-benzylidene-6,7-dihydro-8H-[1,3]dioxolo[4,5-g]chromen-8-one (4a) exhibited the highest activity against three cell lines. Also the analysis of acridine orange/ethidium bromide staining results revealed that 7-benzylidene-6,7-dihydro-8H-[1,3]dioxolo[4,5-g]chromen-8-one (4a) and 7-(2-methoxybenzylidene)-6,7-dihydro-8H-[1,3]dioxolo[4,5-g]chromen-8-one (4b) induced apoptosis in T47D cell line.Conclusion
Finally, the effect of methoxy group on the cytotoxicity of compounds 4b-4d was investigated in and it was revealed that it did not improve the activity of [1,3]dioxolo[4,5-g]chromen-8-ones against MCF-7, T47D, and MDA-MB-231. 相似文献17.
Kazuomi Kario Yoko Uehara Masayuki Shirayama Megumi Takahashi Kazuhito Shiosakai Katsutoshi Hiramatsu Masahiro Komiya Kazuyuki Shimada 《Drugs in R&D》2013,13(1):75-85
Background
Morning hypertension is a risk factor for cardiovascular and cerebrovascular events, and consequently diagnosis and control of morning hypertension are considered very important. We previously reported the results of the Azelnidipine Treatment for Hypertension Open-label Monitoring in the Early morning (At-HOME) Study, which indicated that azelnidipine effectively controlled morning hypertension.Objectives
The objective of this At-HOME subgroup analysis was to evaluate the sustained blood pressure (BP)-lowering effect of azelnidipine, using mean morning and evening systolic BP [ME average] and morning systolic BP minus evening systolic BP (ME difference).Methods
We analyzed the self-measured home BP data (measured in the morning and at bedtime) from this 16-week prospective observational study to clarify the effect of morning dosing of azelnidipine (mean [± standard deviation] maximum dose 14.3 ± 3.6 mg/day). A subgroup of patients from the At-HOME Study who had an evening home BP measurement within 28 days prior to the baseline date were used for efficacy analysis (n = 2,546; mean age, 65.1 years; female, 53.6 %).Results
Home systolic BP/diastolic BP levels in the morning and evening were significantly lowered (p < 0.0001) by −19.4 ± 17.1/−10.3 ± 10.6 and −16.9 ± 17.0/−9.4 ± 10.6 mmHg, respectively. Home pulse rates in the morning and evening were also significantly lowered (p < 0.0001) by −3.5 ± 7.8 and −3.5 ± 7.3 beats/min, respectively. At baseline, patients whose ME average was ≥135 mmHg and whose ME difference was ≥15 mmHg (defined as morning-predominant hypertension) accounted for 20.4 % of the study population. However, at the end of the study, the number of such patients was significantly reduced to 7.9 % (p < 0.0001). Patients whose ME average was ≥135 mmHg and whose ME difference was <15 mmHg (defined as sustained hypertension) accounted for 71.1 % of the study population at baseline. This was reduced significantly to 42.8 % at the end of the study (p < 0.0001). ME average decreased significantly from 153.8 ± 15.5 mmHg to 135.6 ± 11.9 mmHg, and ME difference also decreased significantly from 6.7 ± 13.1 mmHg to 4.7 ± 10.8 mmHg (both p < 0.0001).Conclusion
These results suggest that azelnidipine improved morning hypertension with its sustained BP-lowering effect.Electronic supplementary material
The online version of this article (doi:10.1007/s40268-013-0007-7) contains supplementary material, which is available to authorized users. 相似文献18.
Eisuke Shono 《Drugs in R&D》2013,13(1):95-100
Background and Objectives
Limited data are available regarding the use of golimumab (100 mg) every 4 weeks, with or without methotrexate (MTX). The aim of this retrospective analysis was to evaluate the effectiveness and safety of golimumab following usual clinical practice in Japanese patients with rheumatoid arthritis (RA) according to the recommendations given in the Japanese package insert.Patients and Methods
Japanese RA patients with moderate-to-high disease activity, according to the 28-joint disease activity score based on C-reactive protein (DAS28-CRP) criteria, despite treatment with MTX or another biological agent, were enrolled. Patients were assigned to 50 mg golimumab plus MTX or 100 mg golimumab monotherapy every 4 weeks for 24 weeks. All patients were given MTX if it was not contraindicated. The primary endpoint was the proportion of patients achieving clinical remission (defined as a DAS28-CRP <2.3 or a simplified disease activity index [SDAI] score <3.3) at 24 weeks.Results
Most patients received combined 50 mg golimumab plus MTX (41/43). In these patients, the primary endpoint, clinical remission, was attained in 83 % of patients according to DAS28-CRP criteria (p < 0.001) and 69 % according to SDAI criteria (p < 0.001) by week 24. Adverse events were reported in 11.6 % of patients receiving golimumab.Conclusions
Golimumab (50 mg) plus MTX effectively reduced the signs and symptoms of RA and was generally well tolerated in patients with an inadequate response to MTX and other biological agents. 相似文献19.
Background
Fixed-dose combinations of hypertensive drugs have been advocated as a suitable option for hypertensive patients who require two or more drugs to achieve blood pressure (BP) targets.Objectives
Our objective was to assess the efficacy and safety of lercanidipine/enalapril in clinical practice.Methods
This observational study collected data for patients with hypertension treated by 46 specialists at clinics across Portugal with lercanidipine/enalapril (10/20 mg). The primary outcome measure was the reduction from baseline in systolic BP (SBP) and diastolic BP (DBP).Results
The registry enrolled 315 patients (59.1 % females; mean age 64.84 ± 12.18 years). Baseline SBP and DBP were 159.11 ± 16.93 and 88.32 ± 12.35 mmHg, respectively. At a mean 2.88 ± 1.75 months after starting lercanidipine/enalapril, the mean change from baseline in SBP and DBP were −18.08 ± 15.91 and −10.10 ± 11.46 mmHg, respectively (both p < 0.001). This corresponded to reductions of 11.4 and 11.3 % in SBP and DBP, respectively. SBP was reduced independently of sex and age, and DBP was reduced independently of sex. The BP control (<140/90 mmHg) rate significantly increased from 10.2 % at baseline to 51.0 % after a mean of 2.88 months of treatment with lercanidipine/enalapril (p < 0.001). Adverse effects were seen in only one patient (0.3 %), who developed a persistent dry cough.Conclusions
Treatment with the fixed-dose combination lercanidipine/enalapril was associated with significant reductions in SBP and DBP, and a significant increase in the BP control rate. This fixed-dose combination has been shown to effectively reduce BP, generally independently of age and sex, and with an excellent safety profile. 相似文献20.
Fatemeh Yousefbeyk Ahmad Reza Gohari Zeinabsadat Hashemighahderijani Sayed Nasser Ostad Mohamad Hossein Salehi Sourmaghi Mohsen Amini Fereshteh Golfakhrabadi Hossein Jamalifar Gholamreza Amin 《Daru : journal of Faculty of Pharmacy, Tehran University of Medical Sciences》2014,22(1):12