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tubocurarine/cáncer
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Is α7-nAChR a possible target for lung cancer and malignant pleural mesothelioma treatment?
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This paper discusses the potential therapeutic effect of α7-nAChR antagonists for NSCLC (non small cell lung cancer) and MPM (malignant pleural mesothelioma). This therapeutic approach is based on the experimental observations that: (a) functional α7-nAChR are expressed in NSCLC and MPM cells, (b)
Anaesthetic management of a patient with carcinoid tumor undergoing myocardial revascularization.
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Carcinoid tumors with hepatic involvement can produce intense flushing, tachycardia, hypotension or hypertension and diarrhoea. Patients with limited cardiac reserve may not tolerate these effects under anaesthesia. Valvular heart disease associated with carcinoid tumors has been reported, but there
Cytotoxic activity of acetylcholine receptor ligands.
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Acetylcholine receptor ligands were studied for cytotoxicity in K562 human erythroid leukemia tumor cells. Cytotoxicity of carbachol, an agonist of acetylcholine receptors, atropine, an antagonist of muscarinic acetylcholine receptor, neurotoxin 11 (NT II) from Naja naja oxiana cobra venom and
Enflurane anaesthesia for removal of aldosterone producing adenoma.
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In a 31-year old woman with a six year history of headache and hypertension a diagnosis of primary aldosteronism was made on the basis of urine samples containing 45 mug/day of aldosterone. The preoperative systemic blood pressure was 240 mm Hg systolic and 120 mm Hg diastolic. The serum potassium
Nicotine modulation of apoptosis in human coronary artery endothelial cells.
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It has been recently reported that nicotine, the addictive component of tobacco, is an important modulator at the level of immune cell apoptosis or programmed cell death. Apoptosis is a process that helps maintain the homeostasis of the vascular endothelium and vascular smooth muscle cells, and
Nicotine inhibition of apoptosis in murine immune cells.
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Nicotine, the addictive component of tobacco, is thought to be at least partially responsible for the deleterious effects of smoking such as heart disease and cancer. Evidence shows that nicotine is an immunomodulator and that one of its possible mechanisms is regulation of apoptosis, or programmed
Synthesis and biological evaluation of 16 beta-pyrrolidinosteroidal derivatives.
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The synthesis of some steroidal bisquaternary ammonium substances (compounds 10 and 11), and their in vitro and in vivo neuromuscular blocking action are described in this report. The pyrrolidino functionality was incorporated at both the 3-beta and 16-beta positions of the steroid nucleus to study
Inhibition of non-neuronal alpha7-nicotinic receptor reduces tumorigenicity in A549 NSCLC xenografts.
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Nicotinic acetylcholine receptors (nAChR) are expressed on bronchial epithelial and non-small cell lung cancer cells and are involved in cell growth regulation. Nicotine (classical nAChR agonist) induced cell proliferation, whereas nAChR antagonists, d- tubocurarine or alpha-cobratoxin (alpha-CbT),
Thymopentin (TP5), an immunomodulatory peptide, suppresses proliferation and induces differentiation in HL-60 cells.
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Thymopentin (Arg-Lys-Asp-Val-Tyr, TP5) has shown immuno-regulatory activities in humans. In the present study, we investigated the effects of TP5 on the proliferation and differentiation of a human promyelocyte leukemia cell line, HL-60. It is noteworthy that TP5 displayed concentration-dependent
Nanoparticulate systems for brain delivery of drugs.
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The blood--brain barrier (BBB) represents an insurmountable obstacle for a large number of drugs, including antibiotics, antineoplastic agents, and a variety of central nervous system (CNS)-active drugs, especially neuropeptides. One of the possibilities to overcome this barrier is a drug delivery
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