WordNet

symptom of being purulent (containing or forming pus) (同)purulency
containing pus; "a purulent wound" (同)pussy
relating to or characterized by suppuration

PrepTutorEJDIC

化膿;うみ
化膿した,うみの出る
うみ,化膿

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出典(authority):フリー百科事典『ウィキペディア（Wikipedia）』「2015/01/20 10:59:29」(JST)

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Eye with conjunctivitis exuding pus

An abscess is an enclosed collection of pus

Duodenoscopy image of hepatopancreatic ampulla with pus exuding from it, indicative of cholangitis

Pus is an exudate, typically white-yellow, yellow, or yellow-brown, formed at the site of inflammation during infection.^[1] An accumulation of pus in an enclosed tissue space is known as an abscess, whereas a visible collection of pus within or beneath the epidermis is known as a pustule or pimple.

Pus consists of a thin, protein-rich fluid, known as liquor puris, and dead leukocytes from the body's immune response (mostly neutrophils). During infection, macrophages release cytokines which trigger neutrophils to seek the site of infection by chemotaxis. There, the neutrophils engulf and destroy the bacteria and the bacteria resist the immune response by releasing toxins called leukocidins.^[2] As the neutrophils die off from toxins and old age, they are destroyed by macrophages, forming the viscous pus.

Bacteria that cause pus are called suppurative, pyogenic,^[2]^[3] or purulent. If the agent also creates mucus, it is called mucopurulent.

Despite normally being of a whitish-yellow hue, changes in the color of pus can be observed under certain circumstances. Pus is sometimes green because of the presence of myeloperoxidase, an intensely green antibacterial protein produced by some types of white blood cells. Green, foul-smelling pus is found in certain infections of Pseudomonas aeruginosa. The greenish color is a result of the bacterial pigment pyocyanin that it produces. Amoebic abscesses of the liver produce brownish pus, which is described as looking like "anchovy paste". Pus can also have a foul odor, particularly pus from anaerobic infections.^[4]

In almost all cases when there is a collection of pus in the body, the clinician will try to create an opening for it to evacuate, This principle has been distilled into the famous Latin aphorism "Ubi pus, ibi evacua" ("Where there is pus, there evacuate it").

Some common disease processes caused by pyogenic infections are impetigo, osteomyelitis, septic arthritis, and necrotizing fasciitis.^[5]^{[not in citation given]}

Pyogenic bacteria

A great many species of bacteria may be pyogenic. The most commonly found include:^[6]^{[unreliable medical source?]}

Staphylococcus aureus
Staphylococcus epidermidis
Streptococcus pyogenes
Escherichia coli (Bacillus coli communis)
Streptococcus pneumoniae (Fraenkel's pneumococcus)
Klebsiella pneumoniae (Friedländer's bacillus)
Salmonella typhi (Bacillus typhosus)
Pseudomonas aeruginosa
Neisseria gonorrhoeae
Actinomyces
Burkholderia mallei (Glanders bacillus)
Mycobacterium tuberculosis (tubercle bacillus)

Staphylococcus aureus bacteria is the most common cause of boils.

References

^ "Pus - Definitions from Dictionary.com". reference.com. Retrieved 2008-08-18.
^ ^a ^b Madigan, Michael T. and Martin, John M. Brock Biology of Microorganisms 11th ed. Pearson Prentice Hall. USA. 2006: 734
^ "pyogenic" at Dorland's Medical Dictionary
^ Topazian RG, Goldberg MH, Hupp JR (2002). Oral and maxillofacial infections (4 ed.). Philadelphia: W.B. Saunders. ISBN 978-0721692715.
^ "Infections Caused by Common Pyogenic Bacteria", Dermatopathology (Springer Berlin Heidelberg): 83–85, doi:10.1007/3-540-30244-1_12
^ Thompson, Alexis; Miles, Alexander (1921). "Pyogenic Bacteria". Manual of Surgery (6th ed.). Oxford Medical Publications. OCLC 335390813.

UpToDate Contents

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English Journal

Increasing incidence of iliopsoas abscesses with MRSA as a predominant pathogen.

Alonso CD, Barclay S, Tao X, Auwaerter PG.SourceDepartment of Medicine, Division of Infectious Diseases, The Johns Hopkins University School of Medicine, Baltimore, MD 21287, United States. cdahlen1@jhmi.edu
The Journal of infection.J Infect.2011 Jul;63(1):1-7. Epub 2011 May 18.
OBJECTIVES: Iliopsoas abscesses (IPAs) are rare infections involving purulence within the muscles of the iliopsoas compartment, seldom due to Methicillin-resistant Staphylococcus aureus (MRSA) historically. This study was designed to evaluate the clinical characteristics and outcomes of patients wit
PMID 21641042

[Inhaled antibiotics in the treatment of noncystic fibrosis bronchiectasis].

Martinez Garcia MA, Soler Cataluna JJ, Serra PC.SourceUnidad de Neumologia, Hospital General de Requena, Valencia, Espana. m.a.martinez@saludalia.com
Archivos de bronconeumologia.Arch Bronconeumol.2011 Jun;47 Suppl 6:19-23.
Inhaled antibiotics are increasingly used in patients with non-cystic fibrosis (CF) bronchiectasis. Currently, there is no formal indication for the use of this therapy in these patients as inhaled antibiotics are currently only indicated in patients with CF. Therefore, prescription in patients with
PMID 21703475

Japanese Journal

ブユ刺咬症の疫学調査成績

大利昌久,斉藤一三,松井すず子,石井明
衞生動物 29(2), 133-138, 1978-06-15
… While, erythema nodosum and urticarial rash developed into secondary lesions including eczematous purulence or necrosis. …
NAID 110003815622

Sodium,potassium and calcium in gingival fluid: a study of the relationship of the ions to one another, to circadian rhythms, gingival bleeding, purulence, and to conservative periodontal therapy.