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Journal of Bacteriology Aug 1964Gordon, M. A. (New York State Department of Health, Albany). The genus Dermatophilus. J. Bacteriol. 88:509-522. 1964.-Seventeen strains of Dermatophilus originating in...
Gordon, M. A. (New York State Department of Health, Albany). The genus Dermatophilus. J. Bacteriol. 88:509-522. 1964.-Seventeen strains of Dermatophilus originating in skin lesions of cattle, sheep, horses, deer, and man were compared as to conditions for growth, colonial characteristics under varying conditions, microscopic morphology, and biochemical reactions. All grew well aerobically at 37 C and were facultatively anaerobic. They were morphologically similar in both gross and microscopic appearance, and most produced motile spores. Stable gray variants often appeared among the orange-yellow "wild-type" colonies. Acid without gas was produced consistently from glucose and fructose, and transitorily from galactose, but was produced from none of eight other carbohydrates except belatedly by some strains from maltose. Almost all strains hydrolyzed casein, most of them digested BCP milk with varying rapidity, and the majority liquefied gelatin, but there was considerable variation in this last property. Differences crossed both host and geographic lines. It is concluded that all isolates can be accommodated in the species D. congolensis Van Saceghem 1915, emend. 1916, 1934, with D. dermatonomus and D. pedis falling into synonymy.
Topics: Actinomycetales; Animals; Carbohydrates; Cattle; Cell Physiological Phenomena; Classification; Culture Media; Electrons; Gram-Positive Cocci; Horses; Humans; Male; Microscopy; Microscopy, Electron; Peptide Hydrolases; Research; Sheep; Sheep, Domestic; Spores, Bacterial
PubMed: 14203370
DOI: 10.1128/jb.88.2.509-522.1964 -
Journal of the American Veterinary... Aug 2019
Topics: Actinobacteria; Animals; Dermatophilus; Ecthyma, Contagious; Female; Goat Diseases; Goats; Gram-Positive Bacterial Infections
PubMed: 31298639
DOI: 10.2460/javma.255.3.313 -
Journal of Travel Medicine Aug 2021
Topics: Dermatitis; Dermatophilus; Humans; Thailand
PubMed: 33550405
DOI: 10.1093/jtm/taab017 -
Clinical Microbiology and Infection :... Sep 2015
Topics: Actinobacteria; Adult; Anti-Bacterial Agents; Bacteriological Techniques; DNA, Bacterial; DNA, Ribosomal; Dermatitis; Gram-Positive Bacterial Infections; Humans; Male; Microbial Sensitivity Tests; Microscopy; RNA, Ribosomal, 16S; Sequence Analysis, DNA; Spectrometry, Mass, Matrix-Assisted Laser Desorption-Ionization; Thailand
PubMed: 26100375
DOI: 10.1016/j.cmi.2015.06.013 -
Journal of the American Academy of... Aug 1993Four cases of human dermatophilosis observed in Rio de Janeiro, Brazil, are reported. Data that suggest nail infection by Dermatophilus congolensis are presented. The... (Review)
Review
Four cases of human dermatophilosis observed in Rio de Janeiro, Brazil, are reported. Data that suggest nail infection by Dermatophilus congolensis are presented. The clinical spectrum of the disease ranged from an asymptomatic infection to a pustular eruption. Our findings suggest that epidermal Langerhans cells play a role in the pathogenesis of the infection.
Topics: Actinomycetales Infections; Adult; Female; Humans; Keratinocytes; Langerhans Cells; Male; Microscopy, Electron; Middle Aged; Skin Diseases, Bacterial
PubMed: 8340513
DOI: 10.1016/0190-9622(93)70194-x -
Veterinary Medicine and Science Feb 2020A severe, chronic, locally extensive granulomatous bronchopneumonia was diagnosed on post-mortem and histopathological examination of an adult alpaca. Dermatophilus...
A severe, chronic, locally extensive granulomatous bronchopneumonia was diagnosed on post-mortem and histopathological examination of an adult alpaca. Dermatophilus congolensis organisms were isolated from the lungs and genotypic identification of aerobic culture was confirmed by sequence analysis of the entire 16S rDNA gene. This is the first report of D. congolensis-associated bronchopneumonia in any species.
Topics: Animals; Bronchopneumonia; Camelids, New World; DNA, Bacterial; DNA, Ribosomal; Dermatophilus; Gram-Positive Bacterial Infections; Lung; Male; New South Wales; Sequence Analysis, DNA
PubMed: 31729199
DOI: 10.1002/vms3.213 -
Journal of Bacteriology Nov 1963Gordon, Morris A. (Division of Laboratories and Research, New York State Department of Health, Albany), and Mercedes R. Edwards. Micromorphology of Dermatophilus...
Gordon, Morris A. (Division of Laboratories and Research, New York State Department of Health, Albany), and Mercedes R. Edwards. Micromorphology of Dermatophilus congolensis. J. Bacteriol. 86:1101-1115. 1963.-As seen in electron micrographs of thin sections, Dermatophilus congolensis is a holocarpic actinomycete that fragments, after formation of septa in several planes, into Sarcina-like packets and then into individual cocci. Release of coccal forms from the filaments and packets is by dissolution of a capsular matrix, which is a product of degradation of the cell wall. The plasmalemma is a "unit membrane." Regularly occurring plasmalemmosomes ("onion bodies") of uniform structure are apparently related to septum formation. A typical bacterial nucleoid is seen in most sections, and ribosomes are scattered throughout the cytoplasm. Specimens for electron microscopy were prepared by a modification of Kellenberger's method.
Topics: Actinomycetales; Actinomycetales Infections; Animals; Cattle; Cattle Diseases; Electrons; Gram-Positive Cocci; Microscopy; Microscopy, Electron; Research
PubMed: 14080778
DOI: 10.1128/jb.86.5.1101-1115.1963 -
Comparative Immunology, Microbiology... Jul 1993Dermatophilus congolensis infection (dermatophilosis) is an acute, subacute or chronic skin disease affecting a wide range of species of animals and man. It is world... (Review)
Review
Dermatophilus congolensis infection (dermatophilosis) is an acute, subacute or chronic skin disease affecting a wide range of species of animals and man. It is world widely distributed but more prevalent in the humid, tropics and subtropics. The disease is now being reviewed in detail. In the present review, the geographical distribution, history and nomenclature, animal hosts affected, aetiological agent and clinical signs of the disease are discussed extensively. Emphasis is also given on the predisposing factors such as rainfall, humidity, ectoparasites etc. under epizootiology. Pathogenesis, pathology, immunology treatment, control and prophylaxis are other areas well covered. The economic importance of the disease is also stressed and a new approach (biological approach) to treatment and control of the disease is being described in this review. It was concluded that in view of the importance of the disease for the increase of livestock and leather production in the tropical and subtropical region especially in Africa, an international centre for dermatophilosis research is highly needed.
Topics: Actinomycetales; Actinomycetales Infections; Animals; Anti-Bacterial Agents; Fatty Acids; Humans; Skin Diseases, Bacterial; Sulfonamides
PubMed: 8403836
DOI: 10.1016/0147-9571(93)90148-x -
Veterinary Pathology Nov 2023The skin covers the external surface of animals, and it is constantly exposed to and inhabited by different microorganisms, including bacteria. Alterations in the skin... (Review)
Review
The skin covers the external surface of animals, and it is constantly exposed to and inhabited by different microorganisms, including bacteria. Alterations in the skin barrier allow commensal and/or pathogenic bacteria to proliferate and penetrate deep into the lower layers of the skin. Being the first barrier to the external environment, the skin is prone to injuries, allowing the penetration of microorganisms that may lead to severe deep infections. Companion animals, especially dogs, are prone to bacterial infections, often secondary to allergic dermatitis. When environmental conditions are unfavorable, horses, cattle, sheep, and goats can develop superficial infections, such as those caused by . Deep inflammation is commonly caused by spp., which results in granulomatous to pyogranulomatous dermatitis and panniculitis. Likewise, bacteria such as spp. and spp. can cause deep pyogranulomatous inflammation. Bacteria that lead to deep necrotizing lesions (eg, necrotizing fasciitis/flesh-eating bacteria) can be severe and even result in death. This review includes an overview of the most common cutaneous bacterial infections of domestic animals, highlighting the main features and histologic morphology of the bacteria, cutaneous structures involved, and the type of inflammatory infiltrates.
Topics: Animals; Dogs; Horses; Cattle; Sheep; Skin; Dermatitis; Animals, Domestic; Panniculitis; Inflammation; Cattle Diseases; Dog Diseases; Horse Diseases; Sheep Diseases
PubMed: 37264789
DOI: 10.1177/03009858231176558 -
Polski Merkuriusz Lekarski : Organ... Aug 2011Pitted keratolysis is a common and problematic skin condition affecting the feet caused by the keratolytic activity of Corynebacterium, Micrococcus, Dermatophilus. Skin... (Review)
Review
Pitted keratolysis is a common and problematic skin condition affecting the feet caused by the keratolytic activity of Corynebacterium, Micrococcus, Dermatophilus. Skin lesions are characterized by crater-like pits of the epidermis accompanied by a burning sensation, itching, pain and malodor. The purpose of the present paper was to characterise the disease's clinical features and possibilities for the therapy. Due to its interdisciplinary nature, not only dermatologists ought to be familiar with the disease, but also physicians, pediatricians, surgeons, orthopedists, military doctors and occupational health doctors.
Topics: Candidiasis, Cutaneous; Corynebacterium; Corynebacterium Infections; Diagnosis, Differential; Foot Dermatoses; Humans; Hyperhidrosis; Skin Diseases, Bacterial
PubMed: 21936353
DOI: No ID Found