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Biomedical subjects

P Stanley

Publications and source records attributed to P Stanley.

At least 19 recordsLinked to original sources
PubMed1979

Echocardiographic manifestations of persistence of the right sinus venosus valve.

The echocardiographic features of a neonate born with a persistent right sinus venosus valve are presented. Because surgical correction of this serious anomaly may be possible, the diagnosis should be made soon after birth. An echocardiogram suggesting a right atrial myxoma, an unlikely finding in a neonate, should be an important clue to the diagnosis of this anomaly.

Echocardiography↗
PubMed1979

Radiography of glycogen storage diseases.

Sixty-three patients with glycogen storage disease were evaluated. Findings on plain film examinations, excretory urography, barium gastrointestinal studies, ultrasonography, and angiography were categorized by type of glycogen storage disease. In type I findings include hepatomegaly with hepatic dysfunction, renomegaly with an increased incidence of renal calculi, and osteopenia with various associated osseous abnormalities. These changes were less pronounced in types III, IV, and VI. Type II displayed either cardiac or skeletal muscle glycogen deposition. Correlation with postmortem examination in 14 individuals is given.

Adolescent↗
PubMed1978

Scintiangiography of hepatic masses in childhood.

Forty-three children with intrahepatic masses had technetium Tc 99m sulfur colloid hepatic scintigrams including scintiangiography. Hypervascularity occurred in nearly one third of the masses, but was limited to children with primary liver tumors including hepatomas, hepatoblastomas, hepatic adenomas, and cavernous hemangiomas. All metastases, abscesses, and hematomas were hypovascular. Routine inclusion of scintiangiography may allow separation of primary hypervascular liver tumors from other hypovascular masses whose static hepatic scintigrams are virtually identical.

Adenoma↗
PubMed1978

Aseptic necrosis after renal transplantation in children.

Aseptic necrosis developed in 11 (6%) of 171 recipients of renal allografts who underwent transplant operations at Childrens Hospital of Los Angeles between February 1967 and August 1977. Pain was the predominant presenting symptom and preceded roentgenographic evidence of aseptic necrosis by as long as seven months. Initial symptoms occurred two months to four years posttransplant. Limited weight bearing and reduction in the dosage of prednisone failed to prevent the progressive destruction of five femoral heads in three patients. Hip replacement led to an amelioration of the symptoms and a resumption of normal activity in each patient. Two patients with involvement of multiple osseous structures have persistent knee and elbow joint pain and effusions, and one of them has required prosthetic replacement of the proximal humerus. No therapy was required for patients with aseptic necrosis of single bones of the hand and foot. There was no statistically significant difference in the total steroid dose received during the first posttransplant year between patients in whom aseptic necrosis developed, and those in whom it did not develop.

Adolescent↗
PubMed1978

The immediate effects of intravenous specific nutrients on EEG sleep.

This study examined the immediate influence of intravenous amino acids and glucose on sleep as measured by all-night EEG recording. The study on 9 normal female subjects was of a latin-square design. Slow wave sleep (SWS) was increased by both solutions whilst dream sleep (REM) was decreased by amino acids and increased by glucose. Total sleep time was not affected. Subjective feelings as to restlessness, quality and depth of sleep under the impact of the various solutions were gathered. The work further elucidates the effect of nutrition on sleep and supports certain theories as to the function of the main sleep component.

Adult↗
PubMed1978

Specific changes in the oligosaccharide moieties of VSV grown in different lectin-resistnat CHO cells.

The carbohydrate moieties of the G glycoprotein of vesicular stomatitis virus (VSV) grown in three distinct lectin-resistant (LecR) Chinese hamster ovary (CHO) cell lines have been compared by fine structural analysis of radiolabeled glycopeptides. The mutant WgaRIII, selected for resistance to wheat germ agglutinin (WGA), produces VSV containing G glycoprotein specifically lacking in sialic acid. The mutant PhaRI, selected for resistance to phytohemagglutinin (PHA) and previously shown to lack a particular glycoprotein N-acetyl-glucosaminyl-transferase activity, produces VSV containing G glycoprotein specifically lacking terminal N-acetylglucosamine-galactose-sialic acid sequences and possessing an increased number of mannose residues in the "core" region of its carbohydrate moieties. The mutant PhaRIConARII, a "double" mutant selected from PhaRI cells for resistance to concanavalin A (ConA), produces VSV containing G glycoprotein with a further alteration in the mannose residues of the "core" oligosaccharide region. We discuss the relevance of these findings to the mechanisms of glycoprotein biosynthesis in mammalian cells and to the biochemical bases of lectin resistance in CHO cells.

Cell Line↗
PubMed1978

Splenoportography in the pediatric age group.

Eleven splenoportograms were performed in 10 patients between the ages of 2.5 and 17 yr. A definitive diagnosis was made in every instance. There were no complications despite the fact that 6 patients had platelet counts less than 100,000/mm3. Fear of potential complications is unwarranted, and splenoportography should be an essential part of the workup of a child suspected of having portal hypertension. Splenoportography, when combined with measurement of splenic pulp pressure, provides precise information regarding the presence of and/or change in portal hypertension and its underlying cause. With this information, therapy for the pediatric patient with portal hypertension can be individualized and managed in a logical fashion.

Adolescent↗
PubMed1978

Binding of [125I] wheat germ agglutinin to Chinese hamster ovary cells under conditions which affect the mobility of membrane components.

The binding of [125I]wheat germ agglutinin ([125I]WGA) of high specific activity to Chinese hamster ovary (CHO) cells has been examined over a millionfold range of WGA concentrations and correlated with the phenomena of agglutination and capping by WGA. Analysis of the binding data by the method of Scatchard gives a complex curve indicative of positive cooperativity amongst high-affinity binding sites. Binding assays performed under conditions which inhibit capping and/or agglutination, such as low temperature or glutaraldehyde fixation, give similarly complex binding curves. Thus, the gross mobility of WGA receptors in the membrane does not appear to be responsible for the cooperative binding of WGA to CHO cells.

Agglutination↗
PubMed1978

Congenital syphilitic hepatitis: a radionuclide study.

A two-month-old girl with congenital syphilitic hepatitis had bizarre liver scintigraphic features showing diminished hepatic uptake of radiocolloid with accentuated pulmonary and bone marrow accumulation. These features were reversible following penicillin therapy and to our knowledge are previously undescribed manifestations of this multisystemic disease.

Female↗
PubMed1978

Renovascular hypertension in children and adolescents.

Renovascular disease often leads to hypertension in children. The most frequent cause is fibromuscular dysplasia of focal type affecting main and peripheral arteries. Diastolic readings in excess of 110 mm Hg with normal serum creatinine and urinalysis are suggestive of renovascular disease. Excretory urography was positive in 65% of patients with unilateral disease. Radionuclide scans complement a positive excretory urogram but may be positive when the urogram is negative. Plasma renin activity was raised in the majority of patients; if the patient does not have peripheral branch stenosis, the renal vein renin ratio will lateralize in unilateral renal disease. The overall results of surgery are encouraging: 86% of surgical procedures alleviated hypertension in unilateral disease.

Adolescent↗
PubMed1978

Echocardiography and perfusion scintigraphy in the diagnosis of pulmonary arteriovenous fistula.

The echocardiographic and perfusion scintigraphic evaluation of an adolescent boy with a pulmonary arteriovenous fistula is reported. Contrast echocardiography following the rapid intravenous injection of indocyanine green dye was utilized to document extracardiac right-to-left shunting. Perfusion lung scintigraphy demonstrated the presence of a single large pulmonary arteriovenous fistula. Contrast echocardiography and perfusion scintigraphy are minimally invasive, safe and easily performed techniques for the rapid diagnosis of pulmonary arteriovenous fistula.

Adolescent↗
PubMed1978

Angiography of extremity masses in children.

Arteriography has proved useful in evaluating 24 children with soft tissue extremity masses. In all cases, it was possible to distinguish between benigna and malignant tumors. The five patients with malignant tumors had increased vascularity with coarse irregular vessels and irregular tumor staining. Arteriovenous shunting was present in three of these five. In addition, clinically unsuspected satellite tumors (local metastases) were seen in two patients. Arteriography in 19 patients with benign conditions was characteristic. Benign tumors of non-blood vessel origin (five) showed only arterial displacement but no pathologic circulation. Five hemangiomas and six arteriovenous malformations were easily distinguished; characteristic appearances were present in three patients with miscellaneous benign masses.

Adolescent↗
PubMed1978

[Segmental replacement of thoracic aorta with autologous pericardium during growth (author's transl)].

Surgical treatment of coarctation of the aorta in the newborn often recurs during childhood. As a means of avoiding this complication segmental replacement of the thoracic aorta with autologous pericardium was evaluated. The isthmic aorta of seven mongrel puppies was replaced by a tubular live pericardial autograft. Between 5 and 36 months (average 15) after surgery, the status of the graft was evaluated by hemodynamic, angiographic, macroscopical and histological studies. Growth of the graft was appreciated by comparing its diameter to that of the descending aorta DG/DA. No pressure gradient across the graft was noted. No significant structure of the graft was observed. The internal surface of the graft was smooth, and the wall, slightly thinner than that of the aorta showed no aneurysm. The diameter of the graft was increased (DG mean 37 %) proportionally to the increase of the aorta (DA mean 36 %). Histologically the graft was endothelialized, the wall was thickened and made up of concentric collagen fibers, live fibroblasts and muscular cells. These results show that during the first months of life, the isthmus of the aorta can be replaced by an autologous pericardial graft which will follow the growth of the normal aorta and adapt to its hemodynamic regimen.

Animals↗