Leprosy risk factors: Difference between revisions
Jump to navigation
Jump to search
Joao Silva (talk | contribs) |
|||
| Line 8: | Line 8: | ||
==Risk Factors== | ==Risk Factors== | ||
The people with higher risk of acquiring leprosy include: | The people with higher risk of acquiring leprosy include: | ||
===Close Contact=== | |||
Close contacts of leprosy patients.<ref name="pmid10472363">{{cite journal| author=van Beers SM, Hatta M, Klatser PR| title=Patient contact is the major determinant in incident leprosy: implications for future control. | journal=Int J Lepr Other Mycobact Dis | year= 1999 | volume= 67 | issue= 2 | pages= 119-28 | pmid=10472363 | doi= | pmc= | url=http://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=10472363 }} </ref> | |||
===Subtype=== | |||
* The type of leprosy of the contact may affect transmission and ''lepromatous leprosy'' patients have higher risk of transmitting the disease.<ref name="pmid10472363">{{cite journal| author=van Beers SM, Hatta M, Klatser PR| title=Patient contact is the major determinant in incident leprosy: implications for future control. | journal=Int J Lepr Other Mycobact Dis | year= 1999 | volume= 67 | issue= 2 | pages= 119-28 | pmid=10472363 | doi= | pmc= | url=http://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=10472363 }} </ref><ref name="pmid11826475">{{cite journal| author=Eiglmeier K, Parkhill J, Honoré N, Garnier T, Tekaia F, Telenti A et al.| title=The decaying genome of Mycobacterium leprae. | journal=Lepr Rev | year= 2001 | volume= 72 | issue= 4 | pages= 387-98 | pmid=11826475 | doi= | pmc= | url=http://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=11826475 }} </ref> | * The type of leprosy of the contact may affect transmission and ''lepromatous leprosy'' patients have higher risk of transmitting the disease.<ref name="pmid10472363">{{cite journal| author=van Beers SM, Hatta M, Klatser PR| title=Patient contact is the major determinant in incident leprosy: implications for future control. | journal=Int J Lepr Other Mycobact Dis | year= 1999 | volume= 67 | issue= 2 | pages= 119-28 | pmid=10472363 | doi= | pmc= | url=http://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=10472363 }} </ref><ref name="pmid11826475">{{cite journal| author=Eiglmeier K, Parkhill J, Honoré N, Garnier T, Tekaia F, Telenti A et al.| title=The decaying genome of Mycobacterium leprae. | journal=Lepr Rev | year= 2001 | volume= 72 | issue= 4 | pages= 387-98 | pmid=11826475 | doi= | pmc= | url=http://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=11826475 }} </ref> | ||
===Immunosuppresion=== | |||
[[Immunosuppressed]] patients have a higher [[Risk factor|risk]] of being [[infected]] by the [[Mycobacterium leprae|mycobacteria]]. In the particular case of [[HIV]] patients, the [[infection]] by the [[HIV]] has not been noted to increase vulnerability for development of leprosy. Additionally some studies have reported activation of latent [[mycobacteria leprae]] with exacerbation of previous [[lesions]], once the [[AIDS antiretroviral drugs|antiretroviral therapy]] is started, possibly due to reconstitution of the [[immune response]] against the [[bacteria]].<ref name="pmid20678090">{{cite journal| author=Trindade MA, Palermo ML, Pagliari C, Valente N, Naafs B, Massarollo PC et al.| title=Leprosy in transplant recipients: report of a case after liver transplantation and review of the literature. | journal=Transpl Infect Dis | year= 2011 | volume= 13 | issue= 1 | pages= 63-9 | pmid=20678090 | doi=10.1111/j.1399-3062.2010.00549.x | pmc= | url=http://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=20678090 }} </ref><ref name="pmid18252138">{{cite journal| author=Martiniuk F, Rao SD, Rea TH, Glickman MS, Giovinazzo J, Rom WN et al.| title=Leprosy as immune reconstitution inflammatory syndrome in HIV-positive persons. | journal=Emerg Infect Dis | year= 2007 | volume= 13 | issue= 9 | pages= 1438-40 | pmid=18252138 | doi=10.3201/eid1309.070301 | pmc=PMC2857291 | url=http://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=18252138 }} </ref><ref name="pmid18457073">{{cite journal| author=Sarno EN, Illarramendi X, Nery JA, Sales AM, Gutierrez-Galhardo MC, Penna ML et al.| title=HIV-M. leprae interaction: can HAART modify the course of leprosy? | journal=Public Health Rep | year= 2008 | volume= 123 | issue= 2 | pages= 206-12 | pmid=18457073 | doi= | pmc=PMC2239330 | url=http://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=18457073 }} </ref><ref name="pmid18639911">{{cite journal| author=Deps PD, Lockwood DN| title=Leprosy occurring as immune reconstitution syndrome. | journal=Trans R Soc Trop Med Hyg | year= 2008 | volume= 102 | issue= 10 | pages= 966-8 | pmid=18639911 | doi=10.1016/j.trstmh.2008.06.003 | pmc= | url=http://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=18639911 }} </ref><ref name="pmid19487911">{{cite journal| author=Couppié P, Domergue V, Clyti E, El Guedj M, Vaz T, Sainte-Marie D et al.| title=Increased incidence of leprosy following HAART initiation: a manifestation of the immune reconstitution disease. | journal=AIDS | year= 2009 | volume= 23 | issue= 12 | pages= 1599-600 | pmid=19487911 | doi=10.1097/QAD.0b013e32832bb5b7 | pmc= | url=http://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=19487911 }} </ref> | |||
===Armadillo Contact=== | |||
History of armadillo contact<ref name="TrumanSingh2011">{{cite journal|last1=Truman|first1=Richard W.|last2=Singh|first2=Pushpendra|last3=Sharma|first3=Rahul|last4=Busso|first4=Philippe|last5=Rougemont|first5=Jacques|last6=Paniz-Mondolfi|first6=Alberto|last7=Kapopoulou|first7=Adamandia|last8=Brisse|first8=Sylvain|last9=Scollard|first9=David M.|last10=Gillis|first10=Thomas P.|last11=Cole|first11=Stewart T.|title=Probable Zoonotic Leprosy in the Southern United States|journal=New England Journal of Medicine|volume=364|issue=17|year=2011|pages=1626–1633|issn=0028-4793|doi=10.1056/NEJMoa1010536}}</ref> | |||
===Genetic Risk Factors=== | |||
[[Genetic]] factors - the [[immune response]] against the [[mycobacteria]] has [[innate immunity|innate]] and [[acquired immunity|acquired]] components. It has been noted that variants of the [[NOD2]]-mediated signaling pathway, a regulator of the [[innate immunity|innate]] component, have a higher [[Risk factor|risk]] of developing leprosy.<ref name="pmid18247059">{{cite journal| author=Alter A, Alcaïs A, Abel L, Schurr E| title=Leprosy as a genetic model for susceptibility to common infectious diseases. | journal=Hum Genet | year= 2008 | volume= 123 | issue= 3 | pages= 227-35 | pmid=18247059 | doi=10.1007/s00439-008-0474-z | pmc= | url=http://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=18247059 }} </ref><ref name="pmid20018961">{{cite journal| author=Zhang FR, Huang W, Chen SM, Sun LD, Liu H, Li Y et al.| title=Genomewide association study of leprosy. | journal=N Engl J Med | year= 2009 | volume= 361 | issue= 27 | pages= 2609-18 | pmid=20018961 | doi=10.1056/NEJMoa0903753 | pmc= | url=http://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=20018961 }} </ref> | |||
===Age=== | |||
Age - According to one study, there is a bimodal distribution of [[incidence]], with increased [[Risk factor|risk]] between the ages of 5 and 15 years, and than another increase after the age of 30.<ref name="pmid16388481">{{cite journal| author=Moet FJ, Pahan D, Schuring RP, Oskam L, Richardus JH| title=Physical distance, genetic relationship, age, and leprosy classification are independent risk factors for leprosy in contacts of patients with leprosy. | journal=J Infect Dis | year= 2006 | volume= 193 | issue= 3 | pages= 346-53 | pmid=16388481 | doi=10.1086/499278 | pmc= | url=http://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=16388481 }} </ref> | |||
===Endemic Regions=== | |||
People living in [[endemic]] regions and with poor-higiene and [[nutritional]] conditions.<ref name="BhatPrakash2012">{{cite journal|last1=Bhat|first1=Ramesh Marne|last2=Prakash|first2=Chaitra|title=Leprosy: An Overview of Pathophysiology|journal=Interdisciplinary Perspectives on Infectious Diseases|volume=2012|year=2012|pages=1–6|issn=1687-708X|doi=10.1155/2012/181089}}</ref> | |||
===Tattooing=== | |||
Tattooing - there have been reports of transmission of the bacteria from tattooing in India.<ref name="WalkerLockwood2007">{{cite journal|last1=Walker|first1=Stephen L.|last2=Lockwood|first2=Dina N.J.|title=Leprosy|journal=Clinics in Dermatology|volume=25|issue=2|year=2007|pages=165–172|issn=0738081X|doi=10.1016/j.clindermatol.2006.05.012}}</ref><ref name="pmid19126044">{{cite journal| author=Ghorpade A| title=Ornamental tattoos and skin lesions. Tattoo inoculation borderline tuberculoid leprosy. | journal=Int J Dermatol | year= 2009 | volume= 48 | issue= 1 | pages= 11-3 | pmid=19126044 | doi=10.1111/j.1365-4632.2009.03767.x | pmc= | url=http://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=19126044 }} </ref> | |||
===Vertical Transmission from Mother=== | |||
[[Vertical transmission]] - cases of [[vertical transmission]] have been reported.<ref name="WalkerLockwood2007">{{cite journal|last1=Walker|first1=Stephen L.|last2=Lockwood|first2=Dina N.J.|title=Leprosy|journal=Clinics in Dermatology|volume=25|issue=2|year=2007|pages=165–172|issn=0738081X|doi=10.1016/j.clindermatol.2006.05.012}}</ref><ref name="pmid6683260">{{cite journal| author=Duncan ME, Melsom R, Pearson JM, Menzel S, Barnetson RS| title=A clinical and immunological study of four babies of mothers with lepromatous leprosy, two of whom developed leprosy in infancy. | journal=Int J Lepr Other Mycobact Dis | year= 1983 | volume= 51 | issue= 1 | pages= 7-17 | pmid=6683260 | doi= | pmc= | url=http://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=6683260 }} </ref> | |||
==References== | ==References== | ||
Revision as of 22:03, 4 July 2014
|
Leprosy Microchapters |
|
Diagnosis |
|---|
|
Treatment |
|
Case Studies |
|
Leprosy risk factors On the Web |
|
American Roentgen Ray Society Images of Leprosy risk factors |
Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor(s)-in-Chief: João André Alves Silva, M.D. [2]
Overview
Close contacts of patients with untreated, active multibacillary disease are at highest risk of acquiring leprosy. Children are more susceptible than adults to contracting the disease.
Risk Factors
The people with higher risk of acquiring leprosy include:
Close Contact
Close contacts of leprosy patients.[1]
Subtype
- The type of leprosy of the contact may affect transmission and lepromatous leprosy patients have higher risk of transmitting the disease.[1][2]
Immunosuppresion
Immunosuppressed patients have a higher risk of being infected by the mycobacteria. In the particular case of HIV patients, the infection by the HIV has not been noted to increase vulnerability for development of leprosy. Additionally some studies have reported activation of latent mycobacteria leprae with exacerbation of previous lesions, once the antiretroviral therapy is started, possibly due to reconstitution of the immune response against the bacteria.[3][4][5][6][7]
Armadillo Contact
History of armadillo contact[8]
Genetic Risk Factors
Genetic factors - the immune response against the mycobacteria has innate and acquired components. It has been noted that variants of the NOD2-mediated signaling pathway, a regulator of the innate component, have a higher risk of developing leprosy.[9][10]
Age
Age - According to one study, there is a bimodal distribution of incidence, with increased risk between the ages of 5 and 15 years, and than another increase after the age of 30.[11]
Endemic Regions
People living in endemic regions and with poor-higiene and nutritional conditions.[12]
Tattooing
Tattooing - there have been reports of transmission of the bacteria from tattooing in India.[13][14]
Vertical Transmission from Mother
Vertical transmission - cases of vertical transmission have been reported.[13][15]
References
- ↑ 1.0 1.1 van Beers SM, Hatta M, Klatser PR (1999). "Patient contact is the major determinant in incident leprosy: implications for future control". Int J Lepr Other Mycobact Dis. 67 (2): 119–28. PMID 10472363.
- ↑ Eiglmeier K, Parkhill J, Honoré N, Garnier T, Tekaia F, Telenti A; et al. (2001). "The decaying genome of Mycobacterium leprae". Lepr Rev. 72 (4): 387–98. PMID 11826475.
- ↑ Trindade MA, Palermo ML, Pagliari C, Valente N, Naafs B, Massarollo PC; et al. (2011). "Leprosy in transplant recipients: report of a case after liver transplantation and review of the literature". Transpl Infect Dis. 13 (1): 63–9. doi:10.1111/j.1399-3062.2010.00549.x. PMID 20678090.
- ↑ Martiniuk F, Rao SD, Rea TH, Glickman MS, Giovinazzo J, Rom WN; et al. (2007). "Leprosy as immune reconstitution inflammatory syndrome in HIV-positive persons". Emerg Infect Dis. 13 (9): 1438–40. doi:10.3201/eid1309.070301. PMC 2857291. PMID 18252138.
- ↑ Sarno EN, Illarramendi X, Nery JA, Sales AM, Gutierrez-Galhardo MC, Penna ML; et al. (2008). "HIV-M. leprae interaction: can HAART modify the course of leprosy?". Public Health Rep. 123 (2): 206–12. PMC 2239330. PMID 18457073.
- ↑ Deps PD, Lockwood DN (2008). "Leprosy occurring as immune reconstitution syndrome". Trans R Soc Trop Med Hyg. 102 (10): 966–8. doi:10.1016/j.trstmh.2008.06.003. PMID 18639911.
- ↑ Couppié P, Domergue V, Clyti E, El Guedj M, Vaz T, Sainte-Marie D; et al. (2009). "Increased incidence of leprosy following HAART initiation: a manifestation of the immune reconstitution disease". AIDS. 23 (12): 1599–600. doi:10.1097/QAD.0b013e32832bb5b7. PMID 19487911.
- ↑ Truman, Richard W.; Singh, Pushpendra; Sharma, Rahul; Busso, Philippe; Rougemont, Jacques; Paniz-Mondolfi, Alberto; Kapopoulou, Adamandia; Brisse, Sylvain; Scollard, David M.; Gillis, Thomas P.; Cole, Stewart T. (2011). "Probable Zoonotic Leprosy in the Southern United States". New England Journal of Medicine. 364 (17): 1626–1633. doi:10.1056/NEJMoa1010536. ISSN 0028-4793.
- ↑ Alter A, Alcaïs A, Abel L, Schurr E (2008). "Leprosy as a genetic model for susceptibility to common infectious diseases". Hum Genet. 123 (3): 227–35. doi:10.1007/s00439-008-0474-z. PMID 18247059.
- ↑ Zhang FR, Huang W, Chen SM, Sun LD, Liu H, Li Y; et al. (2009). "Genomewide association study of leprosy". N Engl J Med. 361 (27): 2609–18. doi:10.1056/NEJMoa0903753. PMID 20018961.
- ↑ Moet FJ, Pahan D, Schuring RP, Oskam L, Richardus JH (2006). "Physical distance, genetic relationship, age, and leprosy classification are independent risk factors for leprosy in contacts of patients with leprosy". J Infect Dis. 193 (3): 346–53. doi:10.1086/499278. PMID 16388481.
- ↑ Bhat, Ramesh Marne; Prakash, Chaitra (2012). "Leprosy: An Overview of Pathophysiology". Interdisciplinary Perspectives on Infectious Diseases. 2012: 1–6. doi:10.1155/2012/181089. ISSN 1687-708X.
- ↑ 13.0 13.1 Walker, Stephen L.; Lockwood, Dina N.J. (2007). "Leprosy". Clinics in Dermatology. 25 (2): 165–172. doi:10.1016/j.clindermatol.2006.05.012. ISSN 0738-081X.
- ↑ Ghorpade A (2009). "Ornamental tattoos and skin lesions. Tattoo inoculation borderline tuberculoid leprosy". Int J Dermatol. 48 (1): 11–3. doi:10.1111/j.1365-4632.2009.03767.x. PMID 19126044.
- ↑ Duncan ME, Melsom R, Pearson JM, Menzel S, Barnetson RS (1983). "A clinical and immunological study of four babies of mothers with lepromatous leprosy, two of whom developed leprosy in infancy". Int J Lepr Other Mycobact Dis. 51 (1): 7–17. PMID 6683260.