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19,824
result(s) for
"indoles"
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Nintedanib in Progressive Fibrosing Interstitial Lung Diseases
by
Goeldner, Rainer-Georg
,
Flaherty, Kevin R
,
Haeufel, Thomas
in
Aged
,
Carbon monoxide
,
Computed tomography
2019
In patients with a progressive interstitial lung disease, 62% of whom had a CT pattern of usual interstitial pneumonia, those who received nintedanib had a lower annual rate of decline in the forced vital capacity than those who received placebo at 52 weeks.
Journal Article
Efficacy and Safety of Nintedanib in Idiopathic Pulmonary Fibrosis
by
Hansell, David M
,
Flaherty, Kevin R
,
Cottin, Vincent
in
Aged
,
Biological and medical sciences
,
Biopsy
2014
In this randomized, placebo-controlled trial, treatment with nintedanib, an intracellular inhibitor of multiple tyrosine kinases, led to a reduced rate of loss of forced vital capacity in patients with idiopathic pulmonary fibrosis.
Idiopathic pulmonary fibrosis is a fatal lung disease characterized by worsening dyspnea and progressive loss of lung function.
1
A decline in forced vital capacity (FVC) is consistent with disease progression and is predictive of reduced survival time.
1
–
6
Idiopathic pulmonary fibrosis is believed to arise from an aberrant proliferation of fibrous tissue and tissue remodeling due to the abnormal function and signaling of alveolar epithelial cells and interstitial fibroblasts.
7
The activation of cell-signaling pathways through tyrosine kinases such as vascular endothelial growth factor (VEGF), fibroblast growth factor (FGF), and platelet-derived growth factor (PDGF) has been implicated in the pathogenesis of . . .
Journal Article
Nivolumab plus Ipilimumab versus Sunitinib in Advanced Renal-Cell Carcinoma
2018
In a randomized trial involving previously untreated patients with metastatic intermediate- or poor-risk renal-cell cancer, nivolumab plus ipilimumab was associated with higher response rates, longer overall survival, and greater improvement in quality of life than sunitinib.
Journal Article
Stereodivergent assembly of tetrahydro-γ-carbolines via synergistic catalytic asymmetric cascade reaction
2019
Enantiomerically enriched indole-containing heterocycles play a vital role in bioscience, medicine, and chemistry. As one of the most attractive subtypes of indole alkaloids, highly substituted tetrahydro-γ-carbolines are the basic structural unit in many natural products and pharmaceuticals. However, the syntheses of tetrahydro-γ-carbolines with high functionalities from readily available reagents are significant challenging. In particular, the stereodivergent syntheses of tetrahydro-γ-carbolines containing multi-stereogenic centers remain quite difficult. Herein, we report an expedient and stereodivergent assembly of tetrahydro-γ-carbolines with remarkably high levels of stereoselective control in an efficient cascade process from aldimine esters and indolyl allylic carbonates via a synergistic Cu/Ir catalyst system. Control experiments-guided optimization of synergistic catalysts and mechanistic investigations reveal that a stereodivergent allylation reaction and a subsequent highly stereoselective
iso
-Pictet-Spengler cyclization are the key elements to success.
Tetrahydro-γ-carbolines are the basic structural unit in many natural products and pharmaceuticals. Here, the authors report a synergistic Cu/Ir system to assemble chiral tetrahydro-γ-carbolines via a stereodivergent allylation followed by a stereoselective iso-Pictet-Spengler cyclization.
Journal Article
Isolation and Antibacterial Activity of Indole Alkaloids from Pseudomonas aeruginosa UWI-1
by
Maxwell, Anderson
,
Seepersaud, Mohindra
,
Ramsubhag, Adesh
in
Anti-Bacterial Agents - chemistry
,
Anti-Bacterial Agents - isolation & purification
,
Anti-Bacterial Agents - pharmacology
2020
In this study, we report the first isolation of three antibiotic indole alkaloid compounds from a Pseudomonad bacterium, Pseudomonas aeruginosa UWI-1. The bacterium was batch fermented in a modified Luria Broth medium and compounds were solvent extracted and isolated by bioassay-guided fractionation. The three compounds were identified as (1) tris(1H-indol-3-yl) methylium, (2) bis(indol-3-yl) phenylmethane, and (3) indolo (2, 1b) quinazoline-6, 12 dione. A combination of 1D and 2D NMR, high-resolution mass spectrometry data and comparison from related data from the literature was used to determine the chemical structures of the compounds. Compounds 1–3 were evaluated in vitro for their antimicrobial activities against a wide range of microorganisms using the broth microdilution technique. Compounds 1 and 2 displayed antibacterial activity against only Gram-positive pathogens, although 1 had significantly lower minimum inhibitory concentration (MIC) values than 2. Compound 3 displayed potent broad-spectrum antimicrobial activity against a range of Gram positive and negative bacteria. Several genes identified from the genome of P. aeruginosa UWI-1 were postulated to contribute to the biosynthesis of these compounds and we attempted to outline a possible route for bacterial synthesis. This study demonstrated the extended metabolic capability of Pseudomonas aeruginosa in synthesizing new chemotypes of bioactive compounds.
Journal Article
Phase II study of sunitinib as second-line treatment for advanced gastric cancer
by
Yung Jue Bang
,
Won Ki Kang
,
Alberto Sobrero
in
Adenocarcinoma
,
Adenocarcinoma - drug therapy
,
Adenocarcinoma - pathology
2011
Summary
Purpose.
This phase II, open-label, multicenter study assessed the oral, multitargeted, tyrosine kinase inhibitor sunitinib in patients with advanced gastric or gastroesophageal junction adenocarcinoma who had received prior chemotherapy.
Experimental design
. Patients received sunitinib 50 mg/day on Schedule 4/2 (4 weeks on treatment, followed by 2 weeks off treatment). The primary endpoint was objective response rate; secondary endpoints included clinical benefit rate, duration of response, progression-free survival (PFS), overall survival (OS), pharmacokinetics, pharmacodynamics, safety and tolerability, and quality of life.
Results
. Of 78 patients enrolled, most had gastric adenocarcinoma (93.6%) and metastatic disease (93.6%). All were evaluable for safety and efficacy. Two patients (2.6%) had partial responses and 25 patients (32.1%) had a best response of stable disease for ≥6 weeks. Median PFS was 2.3 months (95% confidence interval [CI], 1.6–2.6 months) and median OS was 6.8 months (95% CI, 4.4–9.6 months). Grade ≥3 thrombocytopenia and neutropenia were reported in 34.6% and 29.4% of patients, respectively, and the most common non-hematologic adverse events were fatigue, anorexia, nausea, diarrhea, and stomatitis. Pharmacokinetics of sunitinib and its active metabolite were consistent with previous reports. There were no marked associations between baseline soluble protein levels, or changes from baseline, and measures of clinical outcome.
Conclusions
. The progression-delaying effect and manageable toxicity observed with sunitinib in this study suggest that although single-agent sunitinib has insufficient clinical value as second-line treatment for advanced gastric cancer, its role in combination with chemotherapy merits further study.
Journal Article
Standard first-line chemotherapy with or without nintedanib for advanced ovarian cancer (AGO-OVAR 12): a randomised, double-blind, placebo-controlled phase 3 trial
2016
Angiogenesis is a target in the treatment of ovarian cancer. Nintedanib, an oral triple angiokinase inhibitor of VEGF receptor, platelet-derived growth factor receptor, and fibroblast growth factor receptor, has shown activity in phase 2 trials in this setting. We investigated the combination of nintedanib with standard carboplatin and paclitaxel chemotherapy in patients with newly diagnosed advanced ovarian cancer.
In this double-blind phase 3 trial, chemotherapy-naive patients (aged 18 years or older) with International Federation of Gynecology and Obstetrics (FIGO) IIB–IV ovarian cancer and upfront debulking surgery were stratified by postoperative resection status, FIGO stage, and planned carboplatin dose. Patients were randomly assigned (2:1) via an interactive voice or web-based response system to receive six cycles of carboplatin (AUC 5 mg/mL per min or 6 mg/mL per min) and paclitaxel (175 mg/m2) in addition to either 200 mg of nintedanib (nintedanib group) or placebo (placebo group) twice daily on days 2–21 of every 3-week cycle for up to 120 weeks. Patients, investigators, and independent radiological reviewers were masked to treatment allocation. The primary endpoint was investigator-assessed progression-free survival analysed in the intention-to-treat population. This trial is registered with ClinicalTrials.gov, number NCT01015118.
Between Dec 9, 2009, and July 27, 2011, 1503 patients were screened and 1366 randomly assigned by nine study groups in 22 countries: 911 to the nintedanib group and 455 to the placebo group. 486 (53%) of 911 patients in the nintedanib group experienced disease progression or death compared with 266 (58%) of 455 in the placebo group. Median progression-free survival was significantly longer in the nintedanib group than in the placebo group (17·2 months [95% CI 16·6–19·9] vs 16·6 months [13·9–19·1]; hazard ratio 0·84 [95% CI 0·72–0·98]; p=0·024). The most common adverse events were gastrointestinal (diarrhoea: nintedanib group 191 [21%] of 902 grade 3 and three [<1%] grade 4 vs placebo group nine [2%] of 450 grade 3 only) and haematological (neutropenia: nintedanib group 180 [20%] grade 3 and 200 (22%) grade 4 vs placebo group 90 [20%] grade 3 and 72 [16%] grade 4; thrombocytopenia: 105 [12%] and 55 [6%] vs 21 [5%] and eight [2%]; anaemia: 108 [12%] and 13 [1%] vs 26 [6%] and five [1%]). Serious adverse events were reported in 376 (42%) of 902 patients in the nintedanib group and 155 (34%) of 450 in the placebo group. 29 (3%) of 902 patients in the nintedanib group experienced serious adverse events associated with death compared with 16 (4%) of 450 in the placebo group, including 12 (1%) in the nintedanib group and six (1%) in the placebo group with a malignant neoplasm progression classified as an adverse event by the investigator. Drug-related adverse events leading to death occurred in three patients in the nintedanib group (one without diagnosis of cause; one due to non-drug-related sepsis associated with drug-related diarrhoea and renal failure; and one due to peritonitis) and in one patient in the placebo group (cause unknown).
Nintedanib in combination with carboplatin and paclitaxel is an active first-line treatment that significantly increases progression-free survival for women with advanced ovarian cancer, but is associated with more gastrointestinal adverse events. Future studies should focus on improving patient selection and optimisation of tolerability.
Boehringer Ingelheim.
Journal Article
Aspertaichamide B, a new anti-tumor prenylated indole alkaloid from the fungus Aspergillus japonicus TE-739D
2024
Prenylated indole alkaloids, which are mainly produced by genera
Aspergillus
and
Penicillium
, are a class of structurally intriguing specialized metabolites with remarkable biomedical interests. In this study, chemically guided isolation of the
Nicotiana tabacum
-derived endophytic fungus
Aspergillus japonicus
TE-739D yielded eight structurally diverse prenylated indole alkaloids, including an undescribed compound, namely aspertaichamide B (ATB, 1), together with seven previously discovered derivatives (compounds 2 − 8). Their chemical structures as well as the stereochemical features were determined by integrated spectroscopic analyses, including HRESIMS, NMR, NMR calculations with DP4 + probability analysis, and a comparison of the experimental ECD data with computed DFT-based quantum chemical calculations. In vitro cytotoxic effects against the gastric cancer MFC cells revealed that the new compound ATB demonstrated considerable activity. Further studies found that ATB suppressed the viability, colony formation, and migration ability of MFC cells, and induced MFC cells apoptosis in a concentration-dependent way. Moreover, ATB stimulated ROS production in MFC cells and inhibited the tumor growth in the MFC-sourced subcutaneous tumor model while not significantly reducing the weight of mice. The pharmacological results suggested that the newly discovered ATB may be a promising anti-tumor lead compound.
Key points
•
Eight structurally diverse prenylated indole alkaloids including a new aspertaichamide B (ATB) were isolated from the fungus Aspergillus japonicus TE-739D.
•
The structure of ATB was elucidated by HRESIMS, NMR, NMR calculations with DP4 + probability analysis, and ECD calculations.
•
ATB inhibited cell proliferation, promoted apoptosis, and increased ROS production in gastric cancer cells, and exhibited inhibitory effects on tumor growth in vivo.
Journal Article
Anlotinib: First Global Approval
by
Syed, Yahiya Y.
in
AdisInsight Report
,
Angiogenesis
,
Antineoplastic Agents - administration & dosage
2018
Jiangsu Chia-Tai Tianqing Pharmaceutical and Advenchen Laboratories are co-developing anlotinib (Focus V
®
) for the treatment of advanced cancer. Anlotinib is an oral small molecule inhibitor of multiple receptor tyrosine kinases, with a broad spectrum of inhibitory effects on tumour angiogenesis and growth. Anlotinib is approved in China for the treatment of patients with locally advanced or metastatic non-small cell lung cancer (NSCLC) who have undergone progression or recurrence after ≥ 2 lines of systemic chemotherapy. Anlotinib is also undergoing phase II and/or III clinical development for various sarcomas and carcinomas in China, USA and Italy. This article summarizes the milestones in the development of anlotinib leading to this first approval for NSCLC.
Journal Article
Rucaparib or Physician’s Choice in Metastatic Prostate Cancer
by
Emmenegger, Urban
,
Reaume, M. Neil
,
Bambury, Richard M.
in
Acetic acid
,
Androgen Antagonists - therapeutic use
,
Antineoplastic Agents - therapeutic use
2023
In a randomized trial involving men with metastatic prostate cancer with a DNA-repair defect, rucaparib was associated with longer progression-free survival than a control medication (11.2 vs. 6.4 months).
Journal Article