Actinomyces israelii

ラ

Actinomyces israelii

同

アクチノミセス・イスラエリイ、イスラエル放線菌

関

放線菌属

[show details]

アクチノミセス・イスラエリイ : 20 件
アクチノミセス・イスラエリー : 8 件
アクチノマイセス・イスラエリイ : 16 件
アクチノマイセス・イスラエリー : 20 件

• first aid step1 2006 p.139,164

生物的特徴

• アクチノマイセス科アクチノマイセス属
• グラム陽性桿菌
• 偏性嫌気性菌
• 無芽胞菌

• a gram-positive anaerobe, causes oral/facial abscesses with “sulfur granules” that may drain through sinus tracts in skin. Normal oral flora.
• Branching rods in oral infection

存在部位

• ヒトの口腔、扁桃窩、歯垢

感染症

• 放線菌症

• 軽微な外傷を契機に進入増殖

WordNet

1. soil-inhabiting saprophytes and disease-producing plant and animal parasites

Wikipedia preview

出典(authority):フリー百科事典『ウィキペディア（Wikipedia）』「2012/10/07 17:47:42」(JST)

wiki en

[Wiki en表示]

Actinomyces israelii
Scanning electron micrograph of Actinomyces israelii.
Scientific classification
Domain:	Bacteria
Phylum:	Actinobacteria
Order:	Actinomycetales
Family:	Actinomycetaceae
Genus:	Actinomyces
Species:	A. israelii
Binomial name
Actinomyces israelii (Kruse 1896) Lachner-Sandoval 1898

Actinomyces israelii is a species of rod-shaped bacteria within the Actinomyces. Known to live commensally on and within humans, A. israelii is an opportunistic pathogen and a cause of actinomycosis. Many physiologically diverse strains of the species are known to exist, though all are facultative anaerobes.

Pathogenesis

Actinomycosis is most frequently caused by Actinomyces israelii and is sometimes known as the "most misdiagnosed disease," as it is frequently confused with neoplasms. A. israelii is a normal colonizer of the vagina, colon, and mouth. Infection is established first by a breach of the mucosal barrier during various procedures (dental, GI), aspiration, or pathologies such as diverticulitis. The chronic phase of this disease is also known the "classic phase" because the acute, early phase is often missed by health care providers. This is characterized by slow contiguous growth that ignores tissue planes and forms a sinus tract that can spontaneously heal and recur, leading to a densely fibrotic lesion. This lesion is often characterized as "wooden." Sulfur granules form in a central purulence surrounded by neutrophils. This conglomeration of organisms is virtually diagnostic of Actinomyces israelii.^{[citation needed]}

Oral-cervicofacial disease is the most common form of actinomycosis. It is characterized by a painless "lumpy jaw." Lymphadenopathy is uncommon in this form of the disease. Another form of actinomycosis is thoracic disease, which is often misdiagnosed as a neoplasm, as it forms a mass that extends to the chest wall. It arises from aspiration of organisms from the oropharynx. Symptoms include chest pain, fever, and weight loss. Abdominal disease is another manifestation of actinomycosis. This can lead to a sinus tract that drains to the abdominal wall or the perianal area. Symptoms include fever, abdominal pain, and weight loss. Actinomyces spesies have also been shown to infect the central nervous system in a dog "without history or evidence of previous trauma or other organ involvement."

Pelvic actinomycosis is a rare but proven complication of use of intrauterine devices. In extreme cases pelvic abscesses might develop. Treatment of pelvic actinomycosis associated with intrauterine device involves removal of the device and antibiotic treatment.

Diagnosis

Actinomycosis may be considered when a patient has chronic progression of disease across tissue planes that is mass-like at times, sinus tract development that may heal and recur, and refractory infection after a typical course of antibiotics.

Treatment

Treatment for actinomycosis consists of antibiotics such as penicillin or amoxicillin for six to twelve months, as well as surgery if the disease is extensive.

References

UpToDate Contents

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• 1. 頚部顔面​の​放線菌症​ cervicofacial actinomycosis
• 2. 腹部放線菌症​ abdominal actinomycosis
• 3. 卵管卵巣膿瘍​の​マネージメント​および​合併症​ management and complications of tuboovarian abscess
• 4. 卵管卵巣膿瘍​の​疫学​、​臨床症状​、​および​診断​ epidemiology clinical manifestations and diagnosis of tuboovarian abscess
• 5. クリンダマイシン​：​概要​ clindamycin an overview

English Journal

• In vitro bactericidal effect of Nd:YAG laser on Actinomyces israelii.

• Vescovi P, Conti S, Merigo E, Ciociola T, Polonelli L, Manfredi M, Meleti M, Fornaini C, Rocca JP, Nammour SA.SourceFaculté de Médécine et Chirurgie de Liège, Liege, Belgium.
• Lasers in medical science.Lasers Med Sci.2012 Sep 29. [Epub ahead of print]
• A bactericidal effect has been reported by the use of near-infrared laser light on both Gram-positive and Gram-negative bacteria. The aim of this study was to evaluate the effect of Nd:YAG laser on Actinomyces israelii, filamentous bacteria causing cervicofacial actinomycosis. Experiments were reali
• PMID 23053244

• Invasive sinonasal actinomycosis: Case Report and Literature Review.

• Vorasubin N, Wu AW, Day C, Suh JD.SourceDepartment of Head and Neck Surgery, David Geffen School of Medicine at University of California Los Angeles, Los Angeles, California. nvorasubin@mednet.ucla.edu.
• The Laryngoscope.Laryngoscope.2012 Sep 24. doi: 10.1002/lary.23477. [Epub ahead of print]
• Actinomycosis is a rare anaerobic bacterial infection typically caused by Actinomyces israelii. Although part of normal flora in the oral cavity, and respiratory and digestive tracts, A israelii can give rise to pathologic infections most commonly reported in the oral cavity from odontogenic causes.
• PMID 23008010

• Microbiological profile of orbital abscess.

• Suneetha N, Teena MM, Usha V, Mary J.SourceDepartment of Ophthalmology, St. John's Medical College, Bangalore, Karnataka, India.
• Indian journal of medical microbiology.Indian J Med Microbiol.2012 Jul-Sep;30(3):317-22. doi: 10.4103/0255-0857.99494.
• BACKGROUND: Knowledge of the culture and sensitivity pattern is necessary, for the institution of appropriate empirical antibiotic therapy in orbital abscess.OBJECTIVE: The objective of this study is to describe culture and sensitivity patterns of specimens from the orbit and surrounding structures.
• PMID 22885199

Japanese Journal

• ペニシリンアレルギーを伴った頸部放線菌症例

• 宗 謙次,山口 仁平,岩永 哲,伊東 正博,田中 藤信,小室 哲
• 耳鼻咽喉科臨床 104(3), 217-221, 2011-03-01
• … The incidence of symptomatic actinomycosis, an unusual chronic infectious granulomatous disease caused by the anaerobic gram-positive bacterium Actinomyces israelii, has decreased as antibiotics use has spread. …
• NAID 10027794218

• Atypical Osteomyelitis of the Skull Base and Craniovertebral Junction Caused by Actinomyces Infection : Case Report

• NOMURA Masashi,SHIN Masahiro,OHTA Miki,NUKUI Yoko,OHKUSU Kiyofumi,SAITO Nobuhito
• Neurologia medico-chirurgica = 神経外科 51(1), 64-66, 2011-01-15
• … Bacteriological examination of the isolated clival lesion disclosed Actinomyces israelii, and he was treated with intravenous penicillin, 18 million units a day for 6 weeks. …
• NAID 10028104680

• 症例報告 抜歯が誘因となった皮膚放線菌症の1例

• 春山 興右,高山 かおる,佐藤 貴浩 [他]
• 臨床皮膚科 64(4), 347-349, 2010-04
• NAID 40017037833

Related Links

• アクチノマイセス属 - Wikipedia

アクチノマイセス属. Actinomyces israelii.jpg. Actinomyces israelii. 分類 ... アクチノマイセス属（-ぞく、Actinomyces、アクチノミセス属、アクチノミケス属）はグラム 陽性桿菌に分類される真正細菌の一属。 ...

• ACTINOMYCETES

27 Oct 2010 ... The most common cause of actinomycosis is the organism Actinomyces israelii which infects both man and animals. In cattle, the disease is called "lumpy jaw" ( figure 2) because of the huge abscess formed in the angle of the ...

Related Pictures

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★リンクテーブル★

リンク元	「放線菌症」「放線菌属」

「放線菌症」

　　[★]

英

actinomycosis

同

アクチノミセス症

概念

• 慢性化膿性ないし肉芽腫性感染症

病原体

• アクチノマイセス属

病因

• アクチノミセス・イスラエリイ(Actinomyces israelii)が軽微な外傷から進入して発症

病型

• 頚部・顔面放線菌症
• 胸部放線菌症
• 腹部放線菌症
• 中枢神経系
• そのた臓器

病変形成＆病理

• 線維化を伴った炎症性肉芽腫組織

• 硫黄顆粒 sulfur granule
• ドルーゼ Druse

治療

• ペニシリン、セフェム系、テトラサイクリン内服 (NDE.465)

「放線菌属」

　　[★]

英

actinomyces

ラ

Actinomyces

同

アクチノミセス属 アクチノマイセス属 Actinomyces属、放線菌、アクチノミセス、アクチノマイセス、アクチノバクテリア

関

放線菌目

[show details]

アクチノミセス属 actinomyces : 53 件
アクチノマイセス属 actinomyces : 39 件

分類

• 放線菌目放線菌科=アクチノマイセス科

微生物学

• 通性嫌気性菌

放線菌属

• Actinomyces israelii：常在菌

感染症

• 放線菌症