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Biomedical subjects

B Lubin

Publications and source records attributed to B Lubin.

At least 163 records · Page 9Linked to original sources

Alpha-thalassemia in blacks is due to gene deletion.

We used molecular hybridization to test if alpha-thalassemia is due to gene deletion in the black. In 10 families with clinically well-defined alpha-thalassemia-1 (alpha-thal-1), hydribization of alpha-globin cDNA was reduced to the same level as that found in Asians with alpha-thal-1, where two of the four normally present alpha-globin genes are deleted. A black child with hemoglobin H (Hb H) disease also has three globin genes deleted, as do Asian patients with Hb H disease. We conclude that alpha-thalassemia in the black is most commonly due to gene deletion.

Black People↗

Correlates of depressive mood among normals.

In order to determine the correlates of depressive mood, members of a women's volunteer organization were surveyed by a mailed questionnaire that included the Depression Adjective Check List (DACL) Form E and 14 depression-related measures. Correlations are presented and discussed. Highest correlations are with measures whose relationship to depressive mood are most clear.

Adult↗

Changes in the red blood cell membrane in protein-calorie malnutrition.

Ten children with protein-calorie malnutrition (five with kwashiorkor, three with marasmus, and two with marasmic-kwashiorkor) were studied at hospital admission and during recovery for evidence of changes in red blood cell lipids, osmotic fragility, and chromium survival. On admission, the children had significantly higher-than-normal red blood cell membrane cholesterol and phospholipid, and an elevated cholesterol:phospholipid ratio. Both red blood cell osmotic fragility and red cell survivals were depressed. These measurements returned to normal limits with recovery.

Child, Preschool↗

Concurrent validity of the Depression Adjective Check List in a normal population.

A random sample of 309 employees of a state mental hospital completed form E of the Depression Adjective Check List (DACL), the Beck Depression Inventory, the Zung Self-Rating Depression Scale, and the Crowne-Marlowe Social Desirability Scale. Two psychiatrists then interviewed and independently rated all subjects on a 5-point scale. Most of the correlations between the DACL and the other measurements were significant and of sufficient magnitude to warrant interpretation as support for the concurrent validity of the DACL.

Adult↗

Aspirin-induced hemolysis: the role of concomitant oxidant (H2O2) challenge.

Studies were conducted in an attempt to determine the hemolytic potential of acetylsalicylic acid (ASA) on normal intact red blood cells (RBCs). ASA (25 mg/100 ml) did not impair RBC G-6-PD, glutathione peroxidase or catalase activity, glutathione stability, or hexose monophosphate shunt activity. Hemolysis was not observed after incubation with ASA alone but was quickly noted after exposure to ASA (25 mg/100 ml) and H2O2 (1.2%). Hemolysis did not occur with H2O2 alone but was directly proportional to the ASA concentration. Hemolysis was preceded by peroxidation of membrane lipid and was inhibited by the presence of the antioxidant, thymol. With ASA and H2O2 a marked reduction in membrane phosphatidyl ethanolamine occurred with oxidation of 20:4 and 22:6 fatty acids. No effect on phospholipids or fatty acids occurred with either ASA or H2O2 alone. Salicylic acid, singly or with H2O2, does not exhibit these effects.

Adult↗

Neonatal anaemia secondary to blood loss.

The newborn has a limited capacity to tolerate acute haemorrhage. Prompt diagnosis and therapy are essential for survival. Blood loss can occur in the newborn due to occult haemorrhage, prior to birth or during delivery, obstetric accidents, maternal haemorrhage, or secondary to recurrent blood sampling. Special precautions must be taken when events known to cause fetal haemorrhage have occurred during pregnancy. These include a maternal history of transfusion reaction in the absence of a transfusion, third trimester bleeding with placenta praevia, placenta abruptio and vasa praevia, emergency caesarean sections, twin pregnancies and amniocentesis. The clinical manifestations of post-haemorrhagic anaemia at birth depend on the extent and duration of blood loss. When acute massive blood loss has occurred, the infant is extremely pale and requires immediate transfusions or volume expanders. Although the haemoglobin may be normal initially, it rapidly falls within six to eight hours after birth. Other causes of extreme pallor in the newborn include asphyxia and anaemia secondary to haemolysis. Infants who have developed acute post-haemorrhagic anaemia are hypovolaemic, are neither jaundiced nor cyanotic, and respond to therapy with volume expanders. The clinical picture with chronic blood loss is usually mild and responds to conservative therapy with iron alone. Internal haemorrhage should be suspected when a 24 to 72 hour newborn rapidly deteriorates and has evidence for hypovolaemic shock without signs of external blood loss. The blood withdrawn for laboratory evaluation in the high risk newborn must be carefully monitored so that it can be replaced before the newborn becomes compromised.

Adult↗

Polyvalent pneumococcal-polysaccharide immunization of patients with sickle-cell anemia and patients with splenectomy.

To reduce the risk of infection from Streptococcus pneumoniae in hyposplenic patients we administered octavalent pneumococcal vaccine to 77 patients with sickle-cell disease and 19 asplenic persons and compared their response with 82 controls (38 age-matched normal persons and 44 normal black African children). Fifty micrograms each of pneumococcal-polysaccharide Types 1, 3, 6, 7, 14, 18, 19, and 23 were administered subcutaneously. Post-immunization serums (three to four weeks) were available from 52 of 77 patients with sickle-cell disease; the percent responding and the magnitude of the indirect hemagglutination response were comparable to those of the controls. Within two years after immunization we observed eight Str. pneumoniae infections in 106 age-matched unimmunized patients with sickle-cell disease, but none in the 77 immunized (P less than 0.025). We conclude that pneumococcal polysaccharides are immunogenic in hyposplenic patients and may protect against systemic Str. pneumoniae infection.

Adolescent↗

Scores on Adjective Check List, Eysenck Personality Inventory, and Depression Adjective Chck List for a male prison pupulation.

Normative data are presented for a male prison population on the Adjective Check List (Gough & Heilbrun, 1965), Form A of the Eysenck Personality Inventory (Eysenck & Eysenck, 1975) and Form C of Depression Adjective Check List (Lubin, 1967). The intercorrelations among the instruments also are presented. In the sample were 60 recently admitted male inmates of a maximum security correctional institution randomly drawn from a large sample of 205 consecutive admissions. Subjects described themselves as markedly depressed, high on neuroticism, low in personal adjustment, low in self-confidence, and low in self-control.

Adaptation, Psychological↗

Inhibition of platelet aggregation by acyl-CoA thioesters.

The aggregation of platelets induced by ADP, collagen, or epinephrine in human platelet-rich plasma is inhibited by long chain acyl-CoA thioesters. Palmityl-CoA exerts a concentration dependent inhibition of collagen-induced aggregation and of the primary and secondary waves of ADP-induced aggregation. Palmityl-CoA also inhibits the secondary wave of epinephrine-induced aggregation but has no effect on the primary wave. This inhibitory effect of palmityl-CoA can be reversed by addition of excess ADP and cannot be attributed to a detergent action.

Adenosine Diphosphate↗

Reliability of the depression adjective check lists.

Data from 172 college subjects (93 males and 79 females) with mean age = 24.3 yr. (SD, 7.0) were used to replicate and extend previous findings on the alternate form, split-half and test-retest reliability for Set 2 (Forms E, F, G) of the Depression Adjective Check Lists (Lubin, 1967). Findings are reported for complete lists and for the two columns, i.e., "half lists."

Adult↗