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Biomedical subjects

M Lowenstein

Publications and source records attributed to M Lowenstein.

8 recordsLinked to original sources

Integration of transcript and genetic maps of chromosome 16 at near-1-Mb resolution: demonstration of a "hot spot" for recombination at 16p12.

A single mapping resource, a mouse/human somatic cell panel with average distance between breakpoints of 1.2 Mb and a potential resolution of 1 Mb, has been utilized to integrate the genetic map and a transcript map of human chromosome 16. This map includes 141 genetic markers and 200 genes and transcripts. The localization of four genes (CHEL3, TK2, TRG1, and MMP9) reported to map to chromosome 16 could not be confirmed, and for three of these localizations to other human chromosomes are reported. A correlation between genetic and physical distance over a region estimated to be 23 Mb on the short arm of chromosome 16 identified an interval demonstrating a greatly increased rate of recombination where, in females, 1 cM is equivalent to a physical distance of 100 kb.

Animals↗

The relationship between admission symptoms and hospital assaults.

Assessments at hospital admission of patients' potential for violence often rely on limited information, such as the patient's mental status, because detailed clinical and historical information may not be readily available. This study examined the relationship between symptoms at admission as measured by the Brief Psychiatric Rating Scale and later violence of 127 psychiatric inpatients. Patients who showed higher levels of thinking disturbance, hostile-suspiciousness, and agitation-excitement at the time of admission were at greater risk of becoming assaultive during the hospitalization. The findings suggest the usefulness of specific symptom profiles for identifying acute psychiatric patients at risk for violence.

Female↗

Familial partial deficiency of the third component of complement (C3) and the hypocomplementemic cutaneous vasculitis syndrome.

Familial hypocomplementemia of the third component of complement (C3) was found in four members of a family. The prospositus had cutaneous vasculitis, hypocomplementemia, arthralgia, proteinuria and thrombocytopenia. The combination of clinical, laboratory and pathologic findings resembled the "hypocomplementemic cutaneous vasculitis syndrome" (HCVS) or the "SLE-like syndrome" but serum C3 concentration was 35 to 57 per cent of normal in the propositus and in three relatives. Results of Clq precipitins, cryoglobulins and serologic tests for systemic lupus erythematosus were negative. Proteinuria (815 mg/day) but no hematuria was present. Analysis of the C3 phenotypes in this family showed that three hypocomplementemic members were apparent homozygous C3 slow but one was heterozygous C3 fast-slow. Metabolic studies with 125-Iodinated C3 in the clinically normal mother showed a 50 per cent reduction in C3 synthesis which was consistent with hypocomplementemia documented by serum protein assay. The occurrence of an immune complex-like disease (with characteristics of the HCVS) in a patient with a familial deficiency of C3 suggests that the preexisting C3 deficiency may predispose such persons to certain diseases.

Adolescent↗

Existence of Sporothrix schenckii as a pulmonary saprophyte.

A 48-year-old male custodian and part-time gardener was hospitalized for treatment of renal tuberculosis. Sputum cultures failed to reveal mycobacteria, but Sporothrix schenckii was isolated over an eight-month period. In the absence of clinical or roentgenographic evidence of active lung disease, we postulate the saprophytic existence of S schenckii in this patient's tracheobronchial tree. Recognition of this state would obviate the need for the commonly accepted therapy for pulmonary sporotrichosis, amphotericin B.

Humans↗

Polymyalgia rheumatica and giant cell arteritis: circulating immune complexes.

Circulating immune complexes (CIC) were detected in a large population of patients with polymyalgia rheumatica (PMR) alone, PMR-giant cell arteritis (GCA), and GCA alone. CIC were found in the majority of patients studied. A direct correlation was observed between levels of CIC material and the erythrocyte sedimentation rate. The presence of immune complexes in the sera of patients with these disorders do not have diagnostic significance but may play an important role in their pathogenesis.

Aged↗

Systemic lupus erythematosus in the younger patient: survival studies.

One hundred eighty-two patients fulfilling the American Rheumatism Association criteria for the classification of systemic lupus erythematosus (SLE) were followed prospectively. Sixty-seven had the onset of SLE before age 21, 32 before age 16, and 35 between age 16 and 20. All patients received similar therapy. Only 4 patients received cytotoxic agents. Malar blush, cellular casts, and profuse proteinuria were significantly more common in the 0-15 compared to the adult group (age 21 or older). Five-year survival was 100% for children with membranous or focal lupus nephritis and 85% for diffuse proliferative lupus nephritis.

Adolescent↗