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At least 217 records · Page 12Linked to original sources
PubMed1986

[Etiology of acrodermatitis chronica atrophicans and erythema chronicum migrans].

In Lyme's disease (LD) as well as in the European form of erythema chronicum migrans (ECM), the etiologic agents are spirochetes. As fas as we know by now, these microbes are closely related but not identical. Consequently, LD and ECM should be regarded as closely related but not as identical diseases. The sera of our 21 patients suffering from acrodermatitis chronica atrophicans (ACA) contained elevated antibody titers directed against the etiological agent found in ECM. These findings strongly suggest that ACA is also induced by spirochetes-possibly by the same microbes found in ECM.

Acrodermatitis↗
PubMed1987

Histopathologic changes in bovine fetuses after repeated reintroduction of a spirochete-like agent into pregnant heifers: association with epizootic bovine abortion.

A spirochete-like organism was found in the plasma of bovine fetuses affected with epizootic bovine abortion (EBA). The spirochete-like organism was frequently found in abattoir-collected fetuses as an inapparent infection, and EBA was found in cattle on foothill rangeland where the vector tick Ornithodorus coriaceus could repeatedly reintroduce the infectious agent into pregnant cattle (superinfection). Epizootic bovine abortion resembled a naturally acquired superinfection in circumstances where the agent was frequently present in the environment under conditions favoring transmission. Therefore, to determine whether fetal lesions could be experimentally induced in utero, spirochete-like organisms collected from clinically normal fetuses at an abattoir were inoculated IV and subcutaneously into 2 pregnant heifers 5 times over a 4-month period to mimic repeated tick transmission in the field. Macroscopic and microscopic examinations of tissues from 2 cesarean-collected fetuses and from 3 calves born at term with the naturally acquired spirochete infection indicated that the calves had evidence of an infection that caused morphologic changes compatible with immunologic stimulation and mild reticuloendothelial hyperplasia. Compared with findings in the calves, lesions in the superinfected fetuses were more severe, and the lesion distribution in various organs was more extensive. The spirochete-like organism appeared to be a mild pathogen because of its persistence in the host. Clinical disease from the infection may only develop with repeated superinfections. Therefore, a relationship between this microorganism and EBA is probable.

Abortion, Veterinary↗
PubMed1985

"Intestinal spirochaetosis" of the vervet monkey.

Electron microscopy revealed that 80% of captured vervet monkeys, held in quarantine for experimental use, showed extensive proliferation of spiral-shaped bacteria on the mucosal epithelium of the large bowel. A consortium, consisting of a predominant spirillum together with a spirochaete, was usually seen as a lawn covering the colonic epithelium. Sparsely populated areas showed preferential colonization of the tubular glands. Pathological changes were minimal, being confined to the microvillus border, and affected animals showed no evidence of distress. These findings are compared with those of a similar condition known as "intestinal spirochaetosis" reported in other primates, including man.

Animals↗
PubMed1979

Purulent rectal discharge associated with a nontreponemal spirochete.

A nontreponemal spirochete was isolated from the rectum of a homosexual man with a chronic purulent discharge. Known infectious causes of the disease were excluded. Although the pathogenicity of the organism was not proved, the patient's symptoms rapidly resolved following penicillin G benzathine therapy. When culture of a nonhemorrhagic, purulent rectal discharge fails to verify Neisseria gonorrhoeae, health care personnel are encouraged to carefully examine a Gram's-stained smear of the discharge for spiral-shaped organisms.

Adult↗
PubMed1984

The spirochetal etiology of acrodermatitis chronica atrophicans Herxheimer.

Spirochetes were recovered from the skin lesion of 1 out of 10 acrodermatitis chronica atrophicans patients (ACA). Spirochetes from this skin isolate and from Ixodes (I.) ricinus and I. dammini spirochetes were used as antigens in indirect immunofluorescence tests. All sera from 17 ACA patients showed high antibody titers to the three antigens. Seven of the 17 sera which had the highest titers had crossreactive antibodies to treponemal antigen detectable in the FTA-ABS test. The results indicate that spirochetes are of importance for ACA and probably the causative agent of this disease. The connection between ACA and tick bites and the relationship to erythema chronicum migrans Afzelius (ECMA) and Lyme disease are discussed. The results are consistent with the hypothesis that ECMA and ACA are different manifestations of the same spirochete, with ACA as a late manifestation.

Acrodermatitis↗
PubMed1984

The spirochetal etiology of erythema chronicum migrans Afzelius.

We have obtained spirochetes from Ixodes (I.) ricinus ticks collected in different areas in Stockholm where erythema chronicum migrans Afzelius (ECMA) cases are known to occur sporadically. Titers of antibody against spirochetal isolates, cultured in modified Kelly's medium, from Swedish I. ricinus and American I. dammini ticks were determined by indirect immunofluorescence. With the I. ricinus respectively the I. dammini spirochete as antigen the ECMA group had a significantly higher median titer (73 respectively 128) than the control group (28 respectively 31). Spirochetes have also been isolated from the periphery of one ECMA lesion by injecting skin homogenates into rabbit testicles. The findings are in agreement with spirochetal etiology in ECMA.

Animals↗
PubMed1982

Infection by spirilla in the stomach of the rhesus monkey.

Light and electron microscopy showed gastric spirilla in the gastric mucosa of 45 clinically normal rhesus monkeys (Macaca mulatta). In paraffin sections, gastric spirilla were best shown by silver impregnation stains. When stained by hematoxylin and eosin (HE), gastric spirilla may be mistaken for strands of mucus. In thick sections of epon-embedded tissue, gastric spirilla looked like "corkscrews" with up to 12 coils. They were 8 microns long and 0.7 microns wide, and had characteristic bipolar flagella. They were concentrated in the gastric glands at the isthmus, were less common at the neck and base, and were absent in the gastric lumen. Gastric spirilla were associated closely with parietal cells and could penetrate their cytoplasm. Gastric spirilla elicit neither changes of host cytocomponents nor an inflammatory response in the gastric mucosa.

Animals↗
PubMed1978

[Antimicrobial and antispirochetal activity of Pharmachem's tylosin].

Studies are the following preparations, produced by "PHARMACHIM": tylosine-base (Tylosine-50), tylosine tartarate (Tylosine pulvis) and tylosine phosphate (substance and granules) and their analogues: tylosine-base (Tylan-50), tylosine tartarate (Tylan soluble) and tylosine phosphate (Tylan AF 99), produced by the "Elanco" Company. The biological activity of the preparation was determined by means of the microbiological method of diffusion in agar. In the case of all experimental treatments, the preparations were compared in conformity with their biological activity expressed in IU/mg of the preparations. The minimum inhibition concentrations of the preparations were determined by the method of serial dilutions in liquid nutritive media on 19 different pathogenic strains. The antispirochetal activity of the preparations compared was tested on 130 cockerels and pullets, experimentally infected with Borrelia anserina of the Surnevo and Pamoukchii serotypes. The application of the preparations started simultaneously with the infection or 24 and 48 hrs after it and continued for days. No significant differences are found in the antibacterial and antispirochetal activities of the Bulgarian tylosine preparations and those manufactured by the "Elanko" Company. The tylosine base does not differ significantly in its antimicrobial and antispirochetal activities from the tylosine phosphate and the tylosine tartarate when equal in IU concentrations and doses are applied.

Animals↗