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We have retrospectively reviewed our single-center experience of the treatment of early onset nephrotic syndrome (NS). From 1991 to 1998, ten children with NS were treated. Kidney biopsy showed focal sclerosis (n=1), diffuse mesangial sclerosis (n=7), and congenital NS of the Finnish type (n=2). Associated conditions included incomplete Drash syndrome (n=1), Galloway-Mowat syndrome (n=1), and severe mental and motor retardation of unknown origin (n=3). From 1991 to 1997, five children with NS were treated. Bilateral nephrectomy (NX) was performed in three, one patient with severe retardation died at 4 years and NX was not performed in one patient who showed satisfactory growth and development. Three of these children were dialyzed and two were successfully transplanted. One patient was transplanted without previous dialysis. From 1997 to 1998, five children were treated with a regimen that included captopril and indomethacin (CAPTO/INDO). CAPTO/ INDO was successful in increasing serum protein in all patients and producing growth and development in four patients. In two patients CAPTO/INDO was successful only after unilateral NX. Our experience indicates that CAPTO/INDO may be a valuable treatment in patients with early onset NS. An individualized stepwise approach including unilateral NX should be considered to achieve optimal results.
online pharmacy ref source: www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&list_uids=11045390&dopt=Abstract
Comp Biochem Physiol C Toxicol Pharmacol. 2000 Jun;126(2):123-8.
Involvement of angiotensin II and endothelin-1 in the development of submandibular gland hypertrophy in response to isoproterenol in rats.
Hayashi K, Saito K, Kizawa Y, Sano M, Kusama T, Iwamoto K, Murakami H.
Department of Pathology, Nihon University School of Dentistry at Matsudo, Chiba, Japan.
We investigated whether angiotensin II (Ang II) and endothelin-1(ET-1) are involved in submandibular hypertrophy in response to repeated treatment with isoproterenol (ISO) in rats. The immunoreactive Ang II (IRAng II) and immunoreactive ET-1 (IRET-1) contents of ISO-induced hypertrophy were significantly higher than those of control glands. Treatment of isolated gland tissues with ISO (1 microM) or dobutamine (1 microM) caused significant increases in the IRAng II and IRET- 1 contents of the glands compared with controls. These increases were suppressed by pretreatment with enalapril (3 microM) or captopril (3 microM). Treatment with Ang II (10 microM) also caused an increase in IRET-1 content. Our findings suggest that Ang II and ET-1 are involved in the submandibular gland hypertrophy that develops in rats repeatedly treated with ISO, and that these biologically active peptides may act as growth factors. They also imply that the tissue renin-angiotensin system and Ang II specific receptors are present in the submandibular glands.
online pharmacy ref source: www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&list_uids=11050684&dopt=Abstract
J Cardiovasc Surg (Torino). 2000 Aug;41(4):529-32.
Neurogenic vasoreactivity of human internal thoracic artery is unaffected by endothelial cell integrity.
Canver CC, Cooler SD, Saban R.
Division of Cardiothoracic Surgery, Albany Medical College, New York 12208, USA.
BACKGROUND: The role of internal thoracic artery (ITA) nervous supply has not been previously considered as a potential factor influencing excellent long-term patency of an ITA graft. To define the interaction between the primary afferent neurons and endothelial cells of ITA, we investigated the effects of acute capsaicin administration in vitro on the isometric tension of human ITAs. METHODS: Vessels were obtained from patients undergoing coronary bypass or from multi-organ transplant donors. Thirty-three ITA segments (5 mm wide) were suspended as rings between two stainless-steel stir-ups in water-jacketed (37 degrees C) tissue baths. The tissue baths contained 10 ml physiological salt solution (PSS) of the following composition (mM/L): NaCl 119, KCl 4.7, NaH2PO4 1.0, MgCl2 0.5, CaCl2 2.5, NaHCO3 25, and glucose 11, aerated continuously with 95% O2 and 5% CO2. Peptidase inhibitors, phosphoramidon (1 microM) and captopril (1 microM), were added to PSS to decrease peptide degradation. Mechanical responses were measured isometrically and recorded on a polygraph via isometric force transducers. Vessels were preconstricted with submaximal concentrations of norepinephrine. After the tension had stabilized, capsaicin was added cumulatively to the tissue bath. The viability of ITA was verified by its responses to endothelial-dependent (acetylcholine, 1 microM) (n=20) and endothelial-independent (sodium nitroprusside, 10 microM) (n=13) vasodilators. RESULTS: The exposure of capsaicin (3 microM) to human ITA produced varied effects on ITA irrespective of its endothelium. Capsaicin induced contraction of the ITA smooth muscle in 13 endothelium-intact ITA segments while it produced vasoconstriction in 9 endothelium-denuded ITAs (p=0.6437). In response to capsaicin, relaxation of ITA smooth muscle was observed in 7 ITA rings with endothelium, while vasodilation was present in 4 ITA segments without endothelium (p=0.4099). CONCLUSIONS: Capsaicin-sensitive neurons encircling human ITA produce a neurogenic vasoreactive response independent of ITA endothelial cell integrity.
online pharmacy ref source: www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&list_uids=11052278&dopt=Abstract
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