Sandbox: wdx

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Whipple's disease Microchapters

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor(s)-in-Chief:

Overview

The exact pathogenesis of [disease name] is not fully understood.

OR

It is thought that [disease name] is the result of / is mediated by / is produced by / is caused by either [hypothesis 1], [hypothesis 2], or [hypothesis 3].

OR

[Pathogen name] is usually transmitted via the [transmission route] route to the human host.

OR

Following transmission/ingestion, the [pathogen] uses the [entry site] to invade the [cell name] cell.

OR


[Disease or malignancy name] arises from [cell name]s, which are [cell type] cells that are normally involved in [function of cells].

OR

The progression to [disease name] usually involves the [molecular pathway].

OR

The pathophysiology of [disease/malignancy] depends on the histological subtype.

Pathophysiology

Pathogenesis

  • Whipple's disease is a rare bacterial systemic infection caused by Tropheryma whipplei.[1]
  • Tropheryma whipplei is a periodic acid-Schiff stain positive, gram-positive bacillus of actinomycetes family.[2]
  • The bacteria lives in soil and wastewater. Farmers and everyone who has any contact with contaminated soil and water are in high risk of the infection.
  • It is transmitted through oro-oral and feco-oral routes.[3]
  • It is believed that human being is the only reservoir for this bacteria.
  • It invades primarily intestines and then every other organ including the heart, brain, joints, skin, lungs and the eyes.
  • Tropheryma whipplei infection has four different manifestations: acute infection, the classic Whipple’s disease, chronic carrier state[4], localized chronic infection.
  • It is believed that host immunologic response to the microorganism plays an important role on the clinical manifestation of the disease.[5]


  • Following transmission/ingestion, the [pathogen] uses the [entry site] to invade the [cell name] cell.
  • [Disease or malignancy name] arises from [cell name]s, which are [cell type] cells that are normally involved in [function of cells].
  • The progression to [disease name] usually involves the [molecular pathway].
  • The pathophysiology of [disease/malignancy] depends on the histological subtype.

Genetics

  • [Disease name] is transmitted in [mode of genetic transmission] pattern.
  • Genes involved in the pathogenesis of [disease name] include [gene1], [gene2], and [gene3].
  • The development of [disease name] is the result of multiple genetic mutations.

Associated Conditions

Gross Pathology

  • On gross pathology, [feature1], [feature2], and [feature3] are characteristic findings of [disease name].

Microscopic Pathology

  • On microscopic histopathological analysis, [feature1], [feature2], and [feature3] are characteristic findings of [disease name].


References

  1. Schneider T, Moos V, Loddenkemper C, Marth T, Fenollar F, Raoult D (2008). "Whipple's disease: new aspects of pathogenesis and treatment". Lancet Infect Dis. 8 (3): 179–90. doi:10.1016/S1473-3099(08)70042-2. PMID 18291339.
  2. Schwartzman, Sergio; Schwartzman, Monica (2013). "Whipple's Disease". Rheumatic Disease Clinics of North America. 39 (2): 313–321. doi:10.1016/j.rdc.2013.03.005. ISSN 0889-857X.
  3. Keita, Alpha Kabinet; Brouqui, Philippe; Badiaga, Sékéné; Benkouiten, Samir; Ratmanov, Pavel; Raoult, Didier; Fenollar, Florence (2013). "Tropheryma whipplei prevalence strongly suggests human transmission in homeless shelters". International Journal of Infectious Diseases. 17 (1): e67–e68. doi:10.1016/j.ijid.2012.05.1033. ISSN 1201-9712.
  4. Street, Sara; Donoghue, Helen D; Neild, GH (1999). "Tropheryma whippelii DNA in saliva of healthy people". The Lancet. 354 (9185): 1178–1179. doi:10.1016/S0140-6736(99)03065-2. ISSN 0140-6736.
  5. Marth T, Strober W (1996). "Whipple's disease". Semin. Gastrointest. Dis. 7 (1): 41–8. PMID 8903578.

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