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Hepatogastroenterology. 2000 May-Jun;47(33):795-806.
Effects of angiotensin-converting enzyme inhibitors and sclerotherapy on portal hemodynamics in patients with portal hypertension.

Nasr AA, el-Hak NG, Settein ME, Khafagy MA, Tadros MT.

Internal Medicine Department, Faculty of Medicine, Mansoura University, Egypt.

BACKGROUND/AIMS: Since pharmacotherapy of portal hypertension has always been a subject of wide interest, we decided to study the effects of different angiotensin-converting enzyme inhibitors and endoscopic sclerotherapy on portal hemodynamics in patients with portal hypertension and bleeding esophageal varices. METHODOLOGY: The study included 72 patients with portal hypertension divided into 6 equal groups. Endoscopic sclerotherapy was done to all patients every 2 weeks for 3 months. In addition, the first 5 groups of patients were maintained on angiotensin-converting enzyme inhibitors for 3 months as follows: group I on perindopril, II on ramipril, III on fosinopril, IV on lisinopril and V on captopril. Portal hemodynamics were determined before and after therapy (using an ultrasonic duplex system). New Doppler portal indices were derived and portal vein kinetic pressure was estimated for the first time by using data derived from the ultrasonic duplex system. RESULTS: 1) Short-term endoscopic sclerotherapy alone resulted in significant elevation of portal vein kinetic pressure, wall stress index and flow volume (P < 0.01) and non-significant increase in the total portal circulation resistance index (P > 0.05) and significantly decreased portal vein compliance and distensibility indices (P < 0.05); 2) Angiotensin-converting enzyme inhibitors reduced the maximum and average portal velocities, the portal flow volume, total portal circulation resistance index and increased portal vein compliance and distensibility indices, hence they reduced the portal vein kinetic pressure significantly in group IV (P < 0.05 for the flow volume and P < 0.01 for other indices); 3) The only side effect encountered was allergic cough (in 8.33% of patients). No effects were noticed on the pulse, systolic, diastolic or mean blood pressures or Child-Pugh Score of liver disease. CONCLUSIONS: 1) Angiotensin-converting enzyme inhibitors when added to endoscopic sclerotherapy can ameliorate the effects of the latter on portal hemodynamics in patients with portal hypertension; 2) Portal vein kinetic pressure, total portal circulation resistance index, portal vein wall stress index, compliance and distensibility indices are new Doppler portal indices that proved to be of value in the follow-up of patients with portal hypertension under sclerotherapy alone or in conjunction with pharmacotherapy; 3) Angiotensin-converting enzyme inhibitors are safe drugs that can be used for portal decompression with endoscopic sclerotherapy. Their use as sole portal anti-hypertensive agents still awaits further studies.

online pharmacy ref source: www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&list_uids=10919035&dopt=Abstract

insalud.es

OBJECTIVE: To evaluate the quality of pharmaceutical prescription by means of various indicators. DESIGN: Cross-sectional, retrospective study. SETTING: Non-hospital prescription in all the INSALUD provinces, except Ceuta and Melilla, for a year (1997). MEASUREMENTS: Different quality indicators were analysed for the following groups of medicines: oral diabetes drugs, anti-platelet aggregation drugs, anti-hypertension drugs, non-steroidal anti-inflammatories, tranquillisers and hypnotic drugs, antibiotics, anti-asthmatic drugs and the omeprazol efficiency indicator. Consumption was expressed in defined daily doses (DDD) and in DDD per 1000 persons and per day (DID). A prescription quality indicator was indicated on the basis of weighing up the indicators. RESULTS: The sulphonylurea drugs varied greatly (15-56%) and deviated negatively a lot from the standard value. AAS and ticlopidine made up 74% of the anti-platelet aggregation drugs. Consumption of calcium antagonists was three times greater than of beta-blockers. Captopril and enalapril were 65% of the ACE inhibitors. Ibuprofen, naproxen and diclofenac made up between 34 and 50% of the NSAIDs. The DID of hypnotics was 44 against a standard figure of 24. Use of first-level antibiotics was 77%. Inhaled adrenergic drugs came to 80% of total anti-asthmatic drugs. The cost of omeprazol treatment per day was 267 pesetas/DID, which was inefficient in comparison with the standard of 190. All provinces had a prescription quality indicator above six out of ten. CONCLUSIONS: The ACE inhibitors, anti-asthmatic drugs and antibiotics were close to the standard. The use of sulphonylurea drugs, beta-blockers, NSAIDs and hypnotics was a long way from standard. The prescription level was acceptable in the different provinces.

online pharmacy ref source: www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&list_uids=10920515&dopt=Abstract

J Biol Chem. 2000 Oct 27;275(43):33238-43.
A human homolog of angiotensin-converting enzyme. Cloning and functional expression as a captopril-insensitive carboxypeptidase.

Tipnis SR, Hooper NM, Hyde R, Karran E, Christie G, Turner AJ.

Proteolysis Research Group, School of Biochemistry and Molecular Biology, University of Leeds, Leeds, United Kingdom. s.r.tipnis

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