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Encyclopedia > Treponema pallidum
?Treponema pallidum

Scientific classification
Kingdom: Eubacteria
Phylum: Spirochaetes
Class: Spirochaetes
Order: Spirochaetales
Family: Treponemataceae
Genus: Treponema
Species: T. pallidum
Binomial name
Treponema pallidum
Schaudinn & Hoffmann, 1905

Treponema pallidum is a gram-negative spirochaete bacterium and is considered to be metabolically crippled. Image File history File links Treponema_pallidum. ... Scientific classification or biological classification is how biologists group and categorize extinct and living species of organisms. ... Phyla/Divisions Actinobacteria Aquificae Bacteroidetes/Chlorobi Chlamydiae/Verrucomicrobia Chloroflexi Chrysiogenetes Cyanobacteria Deferribacteres Deinococcus-Thermus Dictyoglomi Fibrobacteres/Acidobacteria Firmicutes Fusobacteria Gemmatimonadetes Nitrospirae Omnibacteria Planctomycetes Proteobacteria Spirochaetes Thermodesulfobacteria Thermomicrobia Thermotogae Bacteria (singular, bacterium) are a major group of living organisms. ... Families Spirochaetaceae Brachyspiraceae    Brachyspira    Serpulina Leptospiraceae    Leptospira    Leptonema The spirochaetes (or spirochetes) are a phylum of distinctive bacteria, which have long, helically coiled cells. ... Families Spirochaetaceae Brachyspiraceae    Brachyspira    Serpulina Leptospiraceae    Leptospira    Leptonema The spirochaetes (or spirochetes) are a phylum of distinctive bacteria, which have long, helically coiled cells. ... Families Spirochaetaceae Brachyspiraceae    Brachyspira    Serpulina Leptospiraceae    Leptospira    Leptonema The spirochaetes (or spirochetes) are a phylum of distinctive bacteria, which have long, helically coiled cells. ... In biology, binomial nomenclature is the formal method of naming species. ... Bacteria that are Gram-negative are not stained dark blue or violet by Gram staining, in contrast to Gram-positive bacteria. ... Families Spirochaetaceae Brachyspiraceae    Brachyspira    Serpulina Leptospiraceae    Leptospira    Leptonema The spirochaetes (or spirochetes) are a phylum of distinctive bacteria, which have long, helically coiled cells. ... Phyla/Divisions Actinobacteria Aquificae Bacteroidetes/Chlorobi Chlamydiae/Verrucomicrobia Chloroflexi Chrysiogenetes Cyanobacteria Deferribacteres Deinococcus-Thermus Dictyoglomi Fibrobacteres/Acidobacteria Firmicutes Fusobacteria Gemmatimonadetes Nitrospirae Omnibacteria Planctomycetes Proteobacteria Spirochaetes Thermodesulfobacteria Thermomicrobia Thermotogae Bacteria (singular, bacterium) are a major group of living organisms. ...


There are at least four known subspecies: T. pallidum pallidum, which causes syphilis; T. pallidum pertenue, which causes yaws; T. pallidum carateum, which causes pinta; and T. pallidum endemicum, which causes bejel. In zoology, as in other branches of biology, subspecies is the rank immediately subordinate to a species. ... Syphilis is a sexually transmitted infection (STI) caused by a spirochaete bacterium, Treponema pallidum. ... Yaws (also Frambesia tropica, thymosis, polypapilloma tropicum or pian) is a tropical infection of the skin, bones and joints caused by the spirochete bacterium Treponema pertenue. ... Pinta is a human skin disease endemic to Mexico, Central America, and South America. ... Bejel, or endemic syphilis, is a chronic skin and tissue disease caused by infection by a subspecies of the spirochete Treponema pallidum. ...


T. pallidum pallidum is a motile spirochaete that is generally acquired by close sexual contact, entering the host via breaches in squamous or columnar epithelium. The organism can also be transmitted to a fetus by transplacental passage during the later stages of pregnancy, giving rise to congenital syphilis. The helical structure of T. pallidum pallidum allows it to move in a corkscrew motion through viscous mediums such as mucus. It gains access to host's blood and lymph systems through tissue and mucus membranes. Sexually transmitted diseases (STDs) — also known as sexually transmissible diseases, sexually transmitted infections (STIs) or (infrequently) venereal diseases (VD) or social disease — are diseases or infections that have a significant probability of transmission between humans by means of sexual contact, vaginal intercourse, oral sex, and/or anal sex. ... Types of epithelium This article discusses the epithelium, an animal anatomical structure. ... The placenta is an ephemeral (temporary) organ present only in female placental mammals during gestation (pregnancy). ...


The subspecies causing yaws, pinta, and bejel are morphologically and serologically indistinguishable from T. pallidum pallidum (syphilis); however, their transmission is not venereal in nature and the course of each disease is significantly different. Yaws (also Frambesia tropica, thymosis, polypapilloma tropicum or pian) is a tropical infection of the skin, bones and joints caused by the spirochete bacterium Treponema pertenue. ... Pinta is a human skin disease endemic to Mexico, Central America, and South America. ... Bejel, or endemic syphilis, is a chronic skin and tissue disease caused by infection by a subspecies of the spirochete Treponema pallidum. ... Comparative anatomy is the study of similarities and differences in the anatomy of organisms. ... Serology is a medical blood test to detect the presence of antibodies in the blood serum. ...


In the July 17, 1998 issue of the journal Science, a group of biologists reported how they sequenced the genome of T. pallidum. The recent sequencing of the genomes of several spirochetes permits a thorough analysis of the similarities and differences within this bacterial phylum. Treponema pallidum subsp. pallidum has one of the smallest bacterial genomes at 1.14 million base pairs (Mb) and has limited metabolic capabilities, reflecting its adaptation through genome reduction to the rich environment of mammalian tissue. July 17 is the 198th day (199th in leap years) of the year in the Gregorian calendar, with 167 days remaining. ... 1998 (MCMXCVIII) was a common year starting on Thursday of the Gregorian calendar, and was designated the International Year of the Ocean. ... Science is the journal of the American Association for the Advancement of Science (AAAS). ... In biology the genome of an organism is the whole hereditary information of an organism that is encoded in the DNA (or, for some viruses, RNA). ...


There is no vaccine for syphilis. The outer membrane of T. pallidum has too few surface proteins for an antibody to be effective. Efforts to develop a safe and effective syphilis vaccine have been hindered by uncertainty about the relative importance of humoral and cellular mechanisms to protective immunity and the fact that T. pallidum outer membrane proteins have not been unambiguously identified.


See also

Syphilis is a sexually transmitted infection (STI) caused by a spirochaete bacterium, Treponema pallidum. ... Rapid Plasma Reagin, a modern screening test for antibodies in the serum of patients with syphilis. ...

References and links


  Results from FactBites:
 
Treponema pallidum - Wikipedia, the free encyclopedia (0 words)
Treponema pallidum is a gram-negative spirochaete bacterium and is considered to be metabolically crippled.
pallidum pallidum is a motile spirochaete that is generally acquired by close sexual contact, entering the host via breaches in squamous or columnar epithelium.
pallidum pallidum (syphilis); however, their transmission is not venereal in nature and the course of each disease is significantly different.
Treponema - MicrobeWiki (0 words)
Treponema pallidum in the testis of an experimentally infected rabbit.
Treponema pallidum, the causative agent of syphilis and the most extensively studied treponeme, is an obligate parasite meaning that it cannot exist outside the host, because it lacks the ability to synthesize essential nutrients, and consequently needs to obtain them from the host.
The immune response to infection with Treponema pallidum, the stealth pathogen.
  More results at FactBites »

 
 

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