The researchers built targets and way to handle skin and built quantitative method notroglucerin by high-performance liquid chromatography (HPLC) and quantitative method total nitroglucerin content in sticking-plaster Discotrin 36mg with area of 13,3cm2. The study was carried out in 6 samples and average with RSD = 0,47%, from there find out exactly nitroglycerin level on 1cm2 to evaluate permeation of nitroglycerin through skin in different temperatures ( 41oC, 37oC, 25oC). The result showed that the higher temperature, the more Nitroglycerin is permeated. The permeation of nitroglycerin through skin is defferent in each animal
Nitroglycerin ; Pharmaceutical Preparations ; Skin

Nitroglycerin, a vasoactive substance, has been used in the treatment of vagina for more than 100 years. To sustain the pharmaceutical effect, doses were administered every 2 hours. Recently the transdermal delivery systems have became popular. Based on eudragit E 100, we combined it with plasticizer (dibutyl sebacate/triethyl citrate), crosslinker (succinic acid), active ingredient (nitroglycerin) and further excipients (e.g. permation enhances: ethyl alcohol) to form a self adhesive matrix system for use in nitroglycerin patch. The concentration of nitroglycerin in the patch was determined by HPLC assay
Nitroglycerin ; Chromatography, High Pressure Liquid ; Adjuvants, Pharmaceutic

Graded infusion and bolus injection methods of vasoactive drugs have both been used to measure baroreflex sensitivity. To determine whether the two methods produce the same values of baroreceptor sensitivity, phenylephrine and nitroglycerin was administered intravenously by both graded infusion and bolus injection methods to 11 rabbits. To evaluate the baroreflex control of heart rate(HR), a logistic sigmoid function model was used. The range of HR and baroreflex gain by the bolus method(100.53+/-0.62, 0.113+/-0.011) were significantly(p<0.05) larger than those measured by the graded infusion method(108.49+/-1.66, 0.126+/-0.013). However, there were no significant changes in the pressure at the midrange of the baroreflex curve. Thus my results indicate that baroreflex control of HR by the graded infusion and bolus injection methods is not equivalent and that baroreflex-induced HR response to a gradual change in pressure is less than that seen with a repid change.
Baroreflex* ; Colon, Sigmoid ; Heart ; Heart Rate ; Nitroglycerin ; Phenylephrine ; Pressoreceptors ; Rabbits*

To evaluate the coronary vasomotor tone in vasospasic angina, we compared the diameters of non-spastic segments of vasospastic group with those of control group. The internal diameters of each segment of three major coronary arteries were measured on the basal coronary angiogram, and nitroglycerin administration after provocation with ergonovine or acetylcholine. The vasospastic angina group consisted of 26 patients(20 males, 6 females, mean age of 54 years) and control group consisted of 25 patients (7 males, 18 females, mean age of 55 years). The basal coronary arterial diameters in vasospastic angina group were smaller than those in control group(p<0.05) except the distal segment of right coronary artery. The percent dilation ratio in vasospastic angina group was greater than that in control group(p<0.05). In vasospastic angina group there was no significant difference in the degree of constriction after provocation with ergonovine or acetylcholine between proximal and distal segment. These observations suggest that in vasospastic angina, basal coronary arterial tone is increased in the entire coronary arterial tree and the localized spasm may reflect local hyperrespon siveness.
Acetylcholine ; Constriction ; Coronary Vessels ; Ergonovine ; Female ; Humans ; Male ; Nitroglycerin ; Spasm

BACKGROUND: In patients with variant angina, previous data have been inconclusive as to whether basal coronary artery tone is elevated at the spastic sites and nonspastic sites. The purpose of this study was to assess the basal coronary artery tone and to evaluate the responsiveness to acetylcholine and ergonovine in patients with variant angina. METHODS: Basal coronary artery tone was assessed by obtaining the percent increase in coronary artery diameter induced by nitroglycerin in 66 patients with variant angina and 26 control subjects. We also compared the basal coronary tone and the constrictive responses to acetylcholine and ergonovine between the 31 patients with variant angina whom spasm was provoked by the low doses of acetylcholine(Ach; intracoronary, 20microg) or ergonovine(Erg; intravenous, 50microg)(Group 1) and the 35 patients provoked by higher doses of acetylcholine(intracoronary, 100microg) or ergonovine(intravenous cumulative dose of 350microg)(Group 2). RESULTS: Patients with variant angina whom spasm was provoked by low doses of acetylcoline and ergonovine, have a more tendency of combine fixed disease(mix disease), multivessel spasm and high disease activity. Basal coronary artery tone at the spastic sites was significantly elevated in the Group 1 in whom spasm was provoked by low doses of acetycholine and ergonovine than that in Group 2(44+/-17 vs 13+/-11%, respectively, p<0.05). Basal coronary artery tone of spasm-related artery, but not nonspasm related artery, at the non spastic site was greater in the Group 1 than that in Group 2 (26+/-14 vs 16+/-10%, respectively, p<0.05). In the patients with variant angina in whom spasm was provoked by higher dose of acetylcholine or ergonovine, basal coronary artery was comparable at the spastic and nonspastic sites and was not different from that in the control subjects. The magnitude of vasoconstrictive responses to acetylcoline and ergonovine, at the nonspastic sites, were also greater in Group 1 than those in Group 2 and the control groups(Ach; 40+/-20 vs 26+/-11. 27+/-12% : Erg ; 37+/-18 vs 12+/-8, 13+/-10%, respectively, p<0.05). CONCLUSION: These findings suggest that elevated basal coronary artery tone of the spastic sites and nonspastic sites of spasm-related artery in patients with variant angina may be related to occurrence of coronary spasm.
Acetylcholine* ; Arteries ; Coronary Vessels* ; Ergonovine* ; Humans ; Muscle Spasticity ; Nitroglycerin ; Spasm*

A double-blind trial of the efficacy of propranolol hydrochloride a new beta adrenergic blocking agent, in the prophylactic treatment of angina pectoris was conducted in 9 patients. Through the trial period of 8 weeks to more than 26 weeks, the patients received propranolol and placebo for equal period. Following are the results. 1. The effective dose of propranolol hydrochloride in the prophylactic treatment of angina pectoris was 80 mg to 120 mg per day. 2. The effectiveness of propranolol hydrochloride was manifested by a reduction in frequency of pain to 40.7%, in nitroglycerin comsumption to 38.8% and by an increase in exercise tolerance. 3. Obseved side effects were transient nausea, vomiting and bradycardia, which were improved with reduction in drug dosage. 4. Further clinical and experimental information may be necessary in order to assess the long-term effects of propranolol hydrochloride.
Angina Pectoris* ; Bradycardia ; Exercise Tolerance ; Humans ; Nausea ; Nitroglycerin ; Propranolol* ; Vomiting

In 35 heart failure patients (20 male, 15 female with average age 48±6) in the Hospital 103 from November 2001 to May 2002 the study was carried out. Doppler ultrasound on the heart identified high systolic pressure of pulmonary artery (SPPA). One sublingual capsule of nitroglycerin (0.5 mg) exested a decrease of SPPA in heart failure patient with high SPPA within 5, 10, 15 , 30 and 1 hour. The preparation was well tolerable, with no significant side effects
Heart Failure, Congestive ; Pulmonary Artery ; Patients ; Nitroglycerin ; pressure

PURPOSE: To investigate the effects of nitroglycerin on the production of nitric oxide and its related pathway in cultured human trabecular meshwork cells (HTMC). METHODS: Primarily cultured HTMC were exposed to 10 nM nitroglycerin using 1% serum-containing media for 30 minutes. The production of nitric oxide was assessed with the Griess assay and expressions of eNOS mRNA was assessed with RT-PCR. Additionally, the cells were exposed to wortmanin and Akt1/2 kinase inhibitor to investigate the mechanism related to the production of nitric oxide. RESULTS: Nitroglycerin increased the production of nitric oxide (p < 0.05) accompanied with increased expression of eNOS mRNA. The increased production of nitric oxide and eNOS mRNA was inhibited by wortmanin and Akt1/2 kinase inhibitor. CONCLUSIONS: Low-dose nitroglycerin increased the production of nitric oxide accompanied by increased eNOS activity. Nitroglycerin drives eNOS activation via the phosphatidylinositol 3-kinase/protein kinase B pathway.
Humans ; Nitric Oxide ; Nitroglycerin ; Phosphatidylinositols ; Phosphotransferases ; RNA, Messenger ; Trabecular Meshwork

No abstract available.
Arterial Pressure* ; Arteriovenous Malformations* ; Embolization, Therapeutic* ; Ethanol* ; Extremities* ; Nitroglycerin*

No abstract available.
Arterial Pressure* ; Arteriovenous Malformations* ; Embolization, Therapeutic* ; Ethanol* ; Extremities* ; Nitroglycerin*