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Biomedical subjects

B A Schultz

Publications and source records attributed to B A Schultz.

5 recordsLinked to original sources
PubMed2001

Distribution of mitochondrial DNA lineages among Native American tribes of Northeastern North America.

The mtDNA haplogroups of 185 individuals from Native American tribes in Northeast North America were determined. A subset of these individuals was analyzed by sequencing hypervariable segments I and II of the control region. The haplogroup frequency distributions of populations in the Northeast exhibit regional continuity that predates European contact. A large amount of gene flow has occurred between Siouan-and Algonquian-speaking groups, probably due to an Algonquian intrusion into the Northeast. The data also support both the Macro-Siouan hypothesis and a relatively recent intrusion of Northern Iroquoians into the Northeast. These conclusions are consistent with archaeological and linguistic evidence.

Canada↗
PubMed1987

The over-projecting nasal tip: precise reduction without rotation.

Excessive projection of the nasal tip is a relatively uncommon deformity, often referred to as the "Pinocchio" nose. When this unaesthetic appearance is secondary to abnormally long medial and lateral crura of the lower lateral cartilages, and when tip rotation is undesirable, surgical correction can represent a challenging problem. A simple and reproducible method via the open septorhinoplasty approach is described for correction of this deformity. In this technique, preoperative photographs are analyzed to calculate the exact length of cartilage to be excised from the medial and lateral crura. The results of this procedure are critically analyzed in six consecutive patients followed for 7 to 19 months. Based on this experience, the operation is recommended as a reliable method for correction of the over-projecting nasal tip when minimal or no rotation is desirable.

Adult↗
PubMed1983

Chlamydia trachomatis in acute epididymitis.

The etiology of acute epididymitis was studied in 52 patients. Infection with Chlamydia trachomatis was demonstrated by culture or serology in 13 patients. In men under the age of 25 C. trachomatis was associated with 7 out of 9 cases of epididymitis, in contrast to none of the 19 cases in men above 35. Culture from the urethra is probably sufficient in diagnosing infection with C. trachomatis in patients with acute epididymitis, since only one patient with a negative urethral culture had a chlamydia-positive aspirate from the epididymis. Half of the cases of epididymitis in men above the age of 35 years were associated with urinary tract infection. One patient was infected with N. gonorrhoeae and one had tuberculosis of the epididymis.

Acute Disease↗