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Pharmacological profile of store-operated Ca(2+) entry in intrapulmonary artery smooth muscle cells.

Store-operated Ca(2+) entry (SOCE) plays an important role in the contraction and proliferation of pulmonary artery smooth muscle cells (PASMCs). The aim of this study was to characterise the pharmacological properties of the SOCE pathway in freshly isolated PASMCs from rat lung and to determine whether this Ca(2+) entry pathway is sensitive to nitric oxide donor drugs. Following depletion of Ca(2+) from the sarcoplasmic reticulum, by treating cells with thapsigargin, re-addition of Ca(2+) produced an increase in cytosolic fluo-4 fluorescence that was sustained for the period that extracellula

Ludwig's angina and acute myocardial infarction: A case report.

Ludwig's angina was first described in 1839 by German physician, Wilhelm Frederick Von Ludwig as a rapidly and fatal progressive gangrenous … ly. The patient was started on medications to relief acute ischemic pain these included, sublingual nitroglycerin 0.6 mg, morphine 5 mg intravenous slowly, antithrombotic, and beta-adrenergic blockade. He was kept in HDU later with heparin 80 U/kg bolus and 8 U/kg continuous infusion and was taken for coronary angiogram which demonstrated no any coronary artery …

[Investigation of adjuvant treatment for difficult weaning from mechanical ventilation].

OBJECTIVE: To investigate the value of drug intervention for difficult weaning from mechanical ventilation. METHODS: A prospective single-b … e day before weaning to reduce abdominal pressure. On the weaning day, all of the patients received nitroglycerin and beta blocker or cedilanid to prevent or control elevation of blood pressure and heart rate in the process of weaning. All patients in treatment group received anisodamine in small dosage 2 hours before extubation. The patients in control group r …

Distal filter protection during percutaneous coronary intervention in native coronary arteries and saphenous vein grafts in patients with acute coronary syndromes.

BACKGROUND: Percutaneous coronary interventions on saphenous vein grafts (SVG) and in patients with acute coronary syndromes (ACS) have been associated with the distal embolization of the thrombus and plaque and to the no-reflow phenomenon. We report on the safety and feasibility of a new distal emboli protection filter. METHODS: Angioplasty using distal filter protection (Angioguard, Cordis, Warren, NJ, USA) was attempted in 38 patients (mean age 65 +/- 11 years, 79% males) affected by ACS. A percutaneous coronary intervention was performed in 27 native coronary arteries, in 10 SVG and in on

Antiplatelet activity of Staphylococcus aureus lipoteichoic acid is mediated through a cyclic AMP pathway.

In this study, Gram-positive Staphylococcus aureus lipoteichoic acid (LTA) dose dependently (0.1-1.0 microg/mL) and time dependently (10-60 min) inhibited platelet aggregation in human platelets stimulated by agonists (i.e., thrombin and collagen). LTA also dose dependently inhibited intracellular Ca(2+) mobilization in human platelets stimulated by collagen. In addition, LTA (0.5 and 1.0 microg/mL) dose dependently increased the formation of cyclic AMP but not cyclic GMP in platelets. LTA (0.5 and 1.0 microg/mL) did not significantly increase the production of nitrate within a 10-min incubati

[Perioperative myocardial infarction and cardiac complications after noncardiac surgery in patients with prior myocardial infarction. I. Clinical data and diagnosis, incidence].

UNLABELLED: Patients with a prior myocardial infarction (MI) have a high risk of perioperative reinfarction compared with the normal populat … nch block (BBB) were excluded; angina pectoris: any chest pain that disappered after application of nitroglycerine; arrhythmia: any change from preoperative rhythm or appearence of ventricular premature beats; and left ventricular failure: clinical and radiological signs of ventricular failure. Statistical evaluation of the demographic data was performed by the …

Prospects for repurposing CNS drugs for cancer treatment.

Drug repurposing is the idea of using an already approved drug for another disease or disorder away from its initial use. This new approach ensures the reduction in high cost required for developing a new drug in addition to the time consumed, especially in the tumor disorders that show an unceasing rising rate with an unmet success rate of new anticancer drugs. In our review, we will review the anti-cancer effect of some CNS drugs, including both therapeutic and preventive, by searching the literature for preclinical or clinical evidence for anticancer potential of central nervous system drug

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… the schemes that has been initiated in 2014 to highlight promising drug candidates with good toxicity profile and experimental evidence, to be subjected to clinical trials to validate their off-label usage. 4 The project has provided a list of candidate drugs, including Losartan, Omeprazole, Statins, Nitroglycerin … the schemes that has been initiated in 2014 to highlight promising drug candidates with good toxicity profile and experimental evidence, to be subjected to clinical trials to validate their off-label usage. 4 The project has provided a list of candidate drugs, including Losartan, Omeprazole, Statins, Nitroglycerin …

Ventricular cardiac-assist devices in infants and children: anesthetic considerations.

OBJECTIVE: The application of a mechanical cardiac-assist device is now a common procedure in modern cardiac surgery in patients with end-stage failure, whereas in pediatric patients it is still a great challenge. In the recent literature, a broad range of survival and weaning rates have been reported, depending on the variety of mechanical devices and the choice of patients with different conditions before implantation or if the device is used in emergency surgery. In this article, the authors report their experience with pediatric cardiac-assist devices and the perioperative anesthesia manag

Reciprocal regulation of cGMP-mediated vasorelaxation by soluble and particulate guanylate cyclases.

Nitric oxide (NO) and atrial natriuretic peptides (ANP) activate soluble (sGC) and particulate guanylate cyclase (pGC), respectively, and play important roles in the maintenance of cardiovascular homeostasis. However, little is known about potential interactions between these two cGMP-generating pathways. Here we demonstrate that sGC and pGC cooperatively regulate cGMP-mediated relaxation in human and murine vascular tissue. In human vessels, the potency of spermine-NONOate (SPER-NO) and ANP was increased after inhibition of endogenous NO synthesis and decreased by prior exposure to glyceryl t

Cutaneous Leiomyoma Mimicking a Keloid.

Dear Editor, Cutaneous leiomyomas (CL) are rare, benign smooth muscle tumors of the skin (1). There are 3 subtypes with different origins an … n patients with multiple lesions (1). Drugs targeting smooth muscle contraction such as nifedipine, nitroglycerin, and phenoxybenzamine are recommended for pain management. Methods such as cryotherapy and carbon dioxide laser ablation have been tested but their efficacy was found to be limited (1,2). In our patient, lesions were asymptomatic and few in number; …

Carfilzomib-induced sinus bradycardia: A case report and literature review.

Carfilzomib is a second-generation irreversible proteasome inhibitors commonly used in the treatment of relapsed or refractory multiple myeloma. However, cardiac toxicity (heart failure, hypertension, coronary heart disease, etc.) has become the main factor leading to its reduction or withdrawal. We report a case of a 55-year-old female patient with multiple myeloma who developed sinus bradycardia following the administration of carfilzomib, along with a review of the relevant literature. The correlation between carfilzomib and cardiotoxicity was assessed by reviewing the medical history, appl

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… spironolactone 25 mg daily, and intravenous furosemide 10 mg four times a day; symptomatic improvement | Discontinued Takamatsu et al. 17 | Female/79 | Bortezomib | 5 days | Acute myocardial infarction | None | Left chest pain and an ECG showed an ST elevation in aVR and ST depression in I, II, aVF and V3–V6 | Nitroglycerin … and clopidogrel (75 mg/day); symptomatic improvement | Discontinued Gupta and colleagues 18 | Female/70 | Bortezomib | 22 times, 157 days | Congestive cardiac failure | Myocardial infarction, hypertensive, inferior wall myocardial ischemia, left ventricular dysfunction | Severe backache | Diuretics, nitroglycerine …

[A neural circuit from paraventricular hypothalamic nucleus oxytocin neurons to trigeminal nucleus caudalis GABAergic neurons modulates pain sensitization in a mouse model of chronic migraine].

OBJECTIVES: To investigate the role of a neural pathway from oxytocin (OXT) neurons in the paraventricular hypothalamic nucleus (PVN) to γ-aminobutyric acid (GABA) neurons (GABAergic neurons) in the trigeminal nucleus caudalis (TNC) in regulating pain sensitization in a mouse model of chronic migraine and to explore the underlying mechanisms. METHODS: A chronic migraine mouse model was established by intraperitoneal injection of nitroglycerin (NTG, 1 mg/mL, 10 mg/kg) on days 1, 3, 5, 7, and 9. The study consisted of four parts: PartⅠ: 24 male wild-type C57BL/6J mice were divided into four gro…

Prognostic significance of atrial fibrillation and severity of symptoms of heart failure in patients with low gradient aortic stenosis and preserved left ventricular ejection fraction.

The aims of this study were to investigate the clinical outcomes of patients with low-gradient aortic stenosis despite preserved left ventricular ejection fraction and to assess reliable prognostic clinical-instrumental features in patients experiencing or not experiencing aortic valve replacement (AVR). Clinical-laboratory and echocardiographic data from 167 patients (median age 78 years, interquartile range 69 to 83) with aortic valve areas <1.0 cm(2), mean gradients ≤30 mm Hg, and preserved left ventricular ejection fraction (≥55%), enrolled from 2005 to 2010, were analyzed. During a mean f

Intractable right coronary artery spasm in the early postoperative period after heart transplantation: a case report.

Coronary artery spasm after heart transplantation is a very rare complication. In one observational study and many anecdotal reports, most cases of coronary artery spasm occurred more than 1 year after surgery and had good outcomes. However, cases of intractable coronary artery spasm during the early postoperative period resulting in fatality are limited. This report presents a case of two cardiac arrests caused by coronary artery spasms within a short period of time after heart transplantation.

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… One case report described a patient who survived with venoarterial extracorporeal membrane oxygenation and intermittent nitroglycerin infusion for severe and diffuse vasospasm in both the left and right coronary arteries during cardiac transplantation. …

Cardiac Amyloid for the Internist.

Cardiac amyloid is an uncommon cause of diastolic dysfunction the recognition of which requires the internist to have clinical suspicion to guide diagnosis and treatment. Cardiac amyloid is an infiltrative cardiomyopathy with significant morbidity and mortality. Appropriate diagnosis is important because management of cardiac amyloid differs from typical heart failure with preserved ejection fraction. An astute internist must be able to recognize common findings of cardiac amyloidosis. Here we present a case of a patient presenting with diastolic heart failure and the steps leading towards dia

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… She was given sublingual nitroglycerin and diuresis which improved her symptoms. A myocardial perfusion study (MPS) found a reversible perfusion defect in the mid to apical anterior wall. …

Endodontics in Systemically Compromised Patients

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… Short appointments, semi-supine chair position, and availability of sublingual form of nitroglycerine are considered as safety procedures. Patients receiving aspirin can be considered normal, though increased bleeding may be associated. … The patient with mild or moderate angina should be reminded to bring with them their nitroglycerin tablets in case of an attack during treatment. …

Techniques for assisting difficult delivery at caesarean section.

BACKGROUND: Caesarean section involves making an incision in the woman's abdomen and cutting through the uterine muscle. The baby is then de … rth trauma was not reported. There were no cases of any maternal side-effect reported in either the nitroglycerin or the placebo group. No other maternal and infant health outcomes were reported. 2. Reverse breech extraction versus head push for the deeply impacted head at full dilation at caesarean section Four randomised trials involving 357 women were identi …

Vascular natriuretic peptide receptor-linked particulate guanylate cyclases are modulated by nitric oxide-cyclic GMP signalling.

(1) The sensitivity of the particulate guanylate cyclase-cyclic guanosine-3',5'-monophosphate (cGMP) system to atrial (ANP) and C-type (CNP) natriuretic peptides was investigated in aortae and mesenteric small arteries from wild-type (WT) and endothelial nitric oxide synthase (eNOS) knockout (KO) mice. (2) ANP and CNP produced concentration-dependent relaxations of mouse aorta that were significantly attenuated by the natriuretic peptide receptor (NPR)-A/B antagonist HS-142-1 (10(-5) M). Both ANP and CNP were more potent in aortae from eNOS KO mice compared to WT. (3) The potency of ANP and CN

Coronary CT and the coronary calcium score, the future of ED risk stratification?

Accurate and efficient evaluation of acute chest pain remains clinically challenging because traditional diagnostic modalities have many limitations. Recent improvement in non-invasive imaging technologies could potentially improve both diagnostic efficiency and clinical outcomes of patients with acute chest pain while reducing unnecessary hospitalizations. However, there is still controversy regarding much of the evidence for these technologies. This article reviews the role of coronary artery calcium score and the coronary computed tomography in the assessment of individual coronary risk and

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… In addition, sublingual administration of nitroglycerin (0.4 mg) is usually administered before the scan to improve visualization of the coronary artery lumen. … Nitroglycerin is contraindicated in individuals taking phosphodiesterase inhibitors, with increased intracranial pressure, severe aortic valve stenosis, severe obstructive hypertrophic cardiomyopathy, symptomatic hypotension or severe anemia. …