Efficacy of various chiropractic treatments, age distribution and incidence of accident- and nonaccident-caused low back pain in male and female patients.

From a total pool of 1189 male and female patients with accident- (AC) and nonaccident- (NA) caused low back pain, 465 cases with completed therapy were studied for effectiveness of various chiropractic treatments. For those who completed therapy, the age distribution and incidence of this disorder were also studied. At the completion of the therapy, the response was evaluated as very good (pain-free, cured), better (very small degree of discomfort), relief (some reduction in pain) or no response to the treatment. The females with NA responded better than AC cases (p less than .001). However, male NA cases showed an increase in "no relief," but it was not significant (p = 0.052). The response of male AC cases was better than that of female AC cases (p less than 0.001). The cervical, thoracic, lumbar and ilium adjustment levels in female and male NA did not show any differences in response (p = 0.15, female; p = 0.46, male). The incidence of NA back pain disorders in both male and female was higher as compared to AC-caused back problems (p less than 0.001). The lower back pain problems did not show any age-specific association in either sex. Manipulative approaches in addition to nonmanipulative methods are superior to nonmanipulative measures alone, and females responded better to nonmanipulative care than did males.

Isolation of enteroviruses from oxidation pond waters.

Enteroviruses were isolated from influent and effluent wastewaters of two types of oxidation lagoons during an 18-month study. Isolations, performed by sewage concentration and direct assay, were low in number and did not follow a seasonal trend. The younger treatment system, using aeration and effluent chlorination, was more efficient at removing viruses than the aging, static complex.

Isolation, purification, and partial characterization of type V-A hemagglutinin from Escherichia coli GV-12, O1:H-.

A hemagglutinin which specifically agglutinates human type A erythrocytes (mannose resistant) was isolated from the growth medium of cultures of Escherichia coli GV-12, serotype O1:H-, and purified by chromatography on Bio-Gel A-1.5 and DEAE-Sephadex A-25. The purity of the hemagglutinin was established by sodium dodecyl sulfate-polyacrylamide gel electrophoresis and immunoelectrophoresis. N-terminus analysis indicated that only asparagine resides on the amino terminus. The native hemagglutinin is an aggregate exhibiting a sedimentation coefficient of 9.25, which corresponds to a molecular weight of approximately 200,000. The monomeric molecular weight was found to be approximately 16,300. Amino acid analysis indicated that the hemagglutinin consists of 131 residues, corresponding to a molecular weight of 13,400.