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Biomedical subjects

J Smith

Publications and source records attributed to J Smith.

At least 1,369 records · Page 76Linked to original sources

Clinical and biochemical assessment of a modified evaporated milk for infant feeding.

A clinical and biochemical evaluation has been made of a new milk formula, Modified Carnation milk (MCM), based on cows' milk but with the mineral content and concentration of caloric nutrients altered to make it correspond more closely to human milk. MCM produced higher plasma calcium and magnesium concentrations in 6-day-old infants than those produced by unmodified evaporated and dried milks, achieving concentrations closer to those of breast milk. Plasma free amino acid concentrations in MCM-fed infants are nearer breast-fed values than those in unmodified milk-fed infants where higher individual plasma amino acid concentrations persist during the first 3 months. MCM-fed infants had low plasma urea concentrations and lower urine osmolalities at 6 days, 3 weeks, 6 weeks, 3 months, and 6 months than infants fed on the evaporated and dried milks, and similar plasma urea and urine osmolalities to those of breast-fed infants. MCM is likely to be superior to unmodified evaporated and dried milks in preventing convulsions of the hypocalcaemic/hypomagnesaemic/hyperphosphataemic type, and seems less likely to cause hypertonic dehydration. MCM is easily prepared, readily accepted by babies, and appears to be nutritionally adequate for the feeding of term infants.

Amino Acids↗

Aneurysmal bone cyst of clavicle.

Two aneurysmal bone cysts are described. They presented difficulties in diagnosis because the patients were rather older than usual for this lesion and because of the uncommon location of the cysts. The nature of aneurysmal bone cysts is discussed.

Age Factors↗

Juxtacortical (parosteal) osteogenic sarcoma: histological grading and prognosis.

In twenty-four cases of juxtacortical osteogenic sarcoma, three histological grades of malignancy were identified and correlated with the prognosis. The eighteen patients with Grade-I or II tumors had a significantly better prognosis than the six with Grade-III lesions. The three grades could not be distinguished roentgenographically. Grade I and II tumors, which showed a high cure rate after amputation, may be amenable to en block resection, provided the entire tumor can be removed with a good margin of uninvolved soft tissue and underlying bone. Grade-III tumors, on the other hand, had a poor prognosis despite early radical surgery.

Adolescent↗

Menetrier's disease. Effect of medical and surgical vagotomy.

A 62-year-old woman with incapacitating atherosclerotic vascular occlusive disease was found to have severe hypoproteinemia as a result of Menetrier's disease. That diagnosis was suspected on roentgenographic and gastroscopic examinations and confirmed by examination of full-thickness surgical gastric biopsy specimens. The protein loss from the stomach was significantly decreased by treatment with trimethaphan and atropine and led us to perform proximal gastric vagotomy at the time of endarterectomy. Subsequent protein turnover studies suggest that there has been a significant decrease in protein loss by the stomach. Further evaluation of the possible role of medical and surgical vagotomy in this disease seems warranted.

Atropine↗

Community satisfaction, expectations of moving and migration.

A previous residential mobility model (Speare, 1974) assumes an additive relationship between residential satisfaction, desire to move, and mobility. This paper elaborates the model and applies it to intercounty migration. An interaction between community satisfaction and expectations to migrate is hypothesized which distinguishes four groups of decision makers. A survey in Durham, North Carolina and a unique mobility follow-up over eight years provide the data to test the model and the interaction. Furthermore, using various time periods for identifying migrants offers some methodological insights. Results support Speare's general formulation but only after the interaction is taken into account. A three-year migration interval is found to be appropriate.

Attitude↗

Acute traumatic intracranial haematoma without skull fracture.

307 cases of acute traumatic intracranial haematoma in patients admitted to the Institute of Neurological Sciences in Glasgow have been analysed for various presenting features. 57 (19%) had no fracture, and 14 had neither a fracture nor neurological symptoms and signs immediately after the injury. Apart from the children, immediate admission and observation of these 14 cases for a period of 24 hours rarely led to the early detection of a haematoma.

Acute Disease↗

Size and location of poly (A) in encephalomyocarditis virus RNA.

Encephalomyocarditis (EMC) virus RNA contains a covalently bound sequence of polyriboadenylic acid (poly(A). This was determined by two-dimensional gel electrophoresis of complete T1 and pancreatic RNase digests of formamidesucrose gradient-purified RNA and subsequent analysis of the product by alkaline hydrolysis. The size of the EMC virus genomic poly(A) sequence was estimated by formamide-polyacrylamide gel electrophoresis of the RNase-resistant product, or by [3H-]poly(U) hybridization to freshly purified virion RNA, to be, on average, 40 nucleotides in length. The evidence obtained from [3H-]isoniazid labelling and other experiments would indicate that the poly(A) sequence is located at the 3'-terminus of EMC virus RNA.

Base Sequence↗