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Biomedical subjects

E Wolinsky

Publications and source records attributed to E Wolinsky.

At least 37 records · Page 2Linked to original sources

Infections due to Lancefield group F and related Streptococci (S. milleri, S. anginosus).

We can no longer accept classification of streptococci solely on the basis of hemolytic reactions or Lancefield agglutinations. While the "viridans" streptococci cannot be serologically differentiated, physiological separation of the species offers a satisfactory method of classifying human isolates. We review the microbiology of Lancefield group F and related streptococci (S. milleri, S. anginosus), emphasizing microbial ecology and current taxonomic considerations. A series of 28 patients infected with these organisms is presented. There was a striking male predominance in the series (6:1) as well as an obvious association with underlying diseases and/or antecedent trauma. The most remarkable feature of these pathogens is their predilection for abscess formation, confirming their overdue recognition as the most common "viridans" streptococcus recovered from abscesses within internal organs. We observed purulent disease of the nervous and skeletal systems, oral cavity, lung and pleural space, abdomen and subcutaneous tissues. Microbial synergy (i.e. polymicrobic infection) was not a requisite for abscess formation. Four of the five deaths in this series occurred in patients 60 years of age of older. Some degree of variability in antimicrobial susceptibility was noted, so speciation alone may not always provide sufficient information on which to base a therapeutic decision.

Abdomen↗

Enterococcal bacteremia without endocarditis.

Seventy-four cases of enterococcal bacteremia without endocarditis were reviewed retrospectively for the years 1963 through 1977. Thirty-nine patients had hospital-acquired infection, 27 had serious underlying disease, and 18 had polymicrobial bacteremia. The organisms isolated from the primary source of infection were similar in patients with pure enterococcal or polymicrobial bacteremia. The most common source was the urinary tract, followed by the abdomen, infected burns, and soft-tissue infections other than burns. The overall mortality was 34%, with significantly higher mortality in immunocompromised patients, including those with infected burn wounds. Mortality also was higher in patients with hospital-acquired infection. Eleven of the 25 deaths were considered directly related to enterococcal septicemia.

Adolescent↗

Fiberoptic bronchoscopy in bacteriologic assessment of lower respiratory tract secretions. Importance of microscopic examination.

Use of fiberoptic bronchoscopy to acquire pulmonary secretions has been shown to yield unreliable bacterial cultures. However, microscopic examination of such material has received little attention. In this study, 69 bronchoscopies were evaluated. Clinical assessment of the presence of a lower respiratory tract infection was made and cultures obtained. In addition, each specimen was analyzed with a Gram-stained smear. The Gram-stained smears of these specimens correlated extremely well with the clinical assessment. In 67 of the 69 cases, bronchoscopy yielded material whose Gram-stained smear accurately reflected the presence or absence of a pyogenic infection. In patients with lower respiratory tract infections, the smear also predicted the likely category of the causative organism. This study suggests that microscopic examination of lower respiratory tract secretions helps make fiberoptic bronchoscopy a potentially useful alternative in the evaluation of bacterial lung infections.

Bacterial Infections↗

In vitro susceptibility of Mycobacterium marinum to eight antimicrobial agents.

The in vitro susceptibilities of 16 Mycobacterium marinum strains to eight antimicrobial agents were determined by the agar dilution technique. The most active drugs were amikacin and kanamycin. Tetracycline, doxycycline, and minocycline were inhibitory, predominantly at concentrations slightly below the expected blood and tissue levels. Trimethoprim-sulfamethoxazole and erythromycin demonstrated activity only at concentrations greater than those usually attained in serum and tissues. Gentamicin was relatively inactive.

Amikacin↗

Cat scratch disease with involvement of intra-parotid lymph nodes. Case report.

A case of cat scratch disease, presenting as a parotid tumor, is described. In its oculo-glandular form, this disease may be associated with swelling of the intraparotid lymph nodes, and the possibility should be considered in the differential diagnosis of parotid tumors in children. A careful history, and skin testing with cat scratch antigen, may aid in the diagnosis of this condition.

Cat-Scratch Disease↗

Water as a source of potentially pathogenic mycobacteria.

The mycobacterial flora of 321 water samples was explored to evaluate the role of this part of the environment as a possible source of human mycobacterial disease. The samples included natural waters, waters treated to make them suitable for drinking, and waters in contact with animals. Water from the city aquarium contained the greatest abundance of mycobacteria, with an average of 3.5 strains per sample. The highest yield of positive cultures came from samples in contact with zoo animals and with fish. The majority of the isolated strains were slowly growing mycobacteria; 80 were Mycobacterium gordonae, and 34 of thse belong to a new serotype. Forty-seven cultures were members of the M. avian-intracellulare-scrofulaceum complex, of which 11 were typable by agglutination. From this study and from the work of others, it is concluded that water may be contaminated with potentially pathogenic mycobacteria and thus may serve as a source of human disease.

Animals↗

Immunologic studies in patients with sarcoidosis and cryptococcosis.

Immunologic studies were performed in two patients with sarcoidosis, who developed cryptococcosis. Polymorphonuclear leukocyte function, complement, and serum antibodies were normal. Both patients had depressed cell-mediated immunity (cmi) to Cryptococcus neoformans and other antigens that persisted after therapy for their infection. These findings suggest that the patients' impaired CMI predisposed them to cryptococcal infection, which complicated their sarcoidosis. Evaluation of sarcoidosis cases should include studies of immune function, and the possibility of a secondary infection should be considered in patients with long-standing sarcoidosis, who develop unexpected changes in their clinical status.

Amphotericin B↗

Cat-scratch disease skin test. Studies of specificity and histopathologic features.

Microscopical examination of biopsy specimens from cat-scratch skin test sites, performed in patients with cat-scratch disease (CSD), sarcoidosis, tuberculosis, and other granulomatous diseases, showed noncaseating granulomatous dermal inflammation in 11 of 12 patients with CSD and in some patients with sarcoidosis or tuberculosis. Biopsy of cat-scratch skin test sites may be a useful ancillary procedure in diagnosing CSD if other granulomatous diseases are excluded.

Adolescent↗