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{{Short description|Species of roundworm}}
{{Taxobox
{{Speciesbox
| image =
| image =
| regnum = [[Animal]]ia
| image_alt = Adult "Angiostrongylus costaricensis", a helminth that causes acute intestinal inflammation known as abdominal angiostrongyliasis
| phylum = [[Nematoda]]
| image_caption = Adult ''Angiostrongylus costaricensis'', a [[helminth]] that causes acute intestinal inflammation known as abdominal [[angiostrongyliasis]]
| classis = [[Secernentea]]
| status =
| ordo = [[Strongylida]]
| status_system =
| familia = [[Metastrongylidae]]
| status_ref =
| genus = ''[[Angiostrongylus]]''
| genus = Angiostrongylus
| species = '''''A. costaricensis'''''
| binomial = ''Angiostrongylus costaricensis''
| species = costaricensis
| authority = Morera & Céspedes, 1971<ref name= "Morera">Morera, P., & Céspedes, R. (1971). ''Angiostrongylus costaricensis'' n. sp.(Nematoda: Metastrongyloidea), a new lungworm occurring in man in Costa Rica. Revista de Biología Tropical, 18(1-2), 173-185. [https://revistas.ucr.ac.cr/index.php/rbt/article/download/28096/28163 PDF] {{open access}}</ref>
| binomial_authority = Morera & Cespedes, 1971
| synonyms =
| synonyms_ref =
| subdivision_ranks =
| subdivision =
}}
}}
'''''Angiostrongylus costaricensis''''' is a parasitic [[nematode]].


'''''Angiostrongylus costaricensis''''' is a species of parasitic [[nematode]] and is the causative agent of abdominal angiostrongyliasis in humans.<ref name= "Morera"/> It occurs in Latin America and the Caribbean.<ref name="Teixeira"/><ref name=":0">{{Cite web|url=https://www.cdc.gov/dpdx/angiostrongyliasis_cos/index.html|title=CDC - DPDx - Angiostrongylus costaricensis|date=2019-06-19|website=www.cdc.gov|language=en-us|access-date=2019-08-14}}</ref>
Its distribution include [[Brazil]].<ref name="Teixeira"/>


== Hosts ==
== Hosts ==
Rodents are the normal definitive hosts, especially the [[cotton rat]]. Aberrant infections have occurred in many other mammals including humans.<ref name=":0" /> Infection of mammalian hosts occurs via ingestion of L3 larvae in [[mollusc]] tissue (e.g. undercooked or raw snails or accidentally on produce) or possibly food contaminated with slime containing such larvae.<ref name=":0" />
Humans and and rodents are the definitive hosts. Main rodent host is the Cotton Rat.


Mollusc are the intermediate host and are infected through ingestion or penetration of the foot by L1 infective larvae from infected faeces.
[[Mollusc]]s are the intermediate host and are infected through ingestion or penetration of the foot by L1 infective larvae from infected feces.
* ''[[Limax maximus]]'' <ref name="Teixeira">{{cite journal |pages=487–9 |doi=10.1590/S0074-02761993000300020 |title=On the diversity of mollusc intermediate hosts of ''Angiostrongylus costaricensis'' Morera & Cespedes, 1971 in southern Brazil |year=1993 |last1=Teixeira |first1=Carlos Graeff |last2=Thiengo |first2=Silvana C. |last3=Thome |first3=José Willibaldo |last4=Medeiros |first4=Aline Bueno |last5=Camillo-Coura |first5=Lea |last6=Agostini |first6=Aventino A. |journal=Memórias do Instituto Oswaldo Cruz |volume=88 |issue=3 |pmid=8107609|doi-access=free }}</ref>

* Slugs from the family [[Veronicellidae]]<ref name=":0" />
* ''[[Limax maximus]]''<ref name="Teixeira">{{cite journal |pages=487–9 |doi=10.1590/S0074-02761993000300020 |title=On the diversity of mollusc intermediate hosts of Angiostrongylus costaricensis Morera & Cespedes, 1971 in southern Brazil |year=1993 |last1=Teixeira |first1=Carlos Graeff |last2=Thiengo |first2=Silvana C. |last3=Thome |first3=José Willibaldo |last4=Medeiros |first4=Aline Bueno |last5=Camillo-Coura |first5=Lea |last6=Agostini |first6=Aventino A. |journal=Memórias do Instituto Oswaldo Cruz |volume=88 |issue=3 |pmid=8107609}}</ref>
* slugs from the family [[Veronicellidae]]{{Citation needed|date=June 2010}}


== Pathology ==
== Pathology ==
Pathology is due to both the adults and the eggs. Adults in the ileo-caecal arterioles cause an inflammatory (eosinophilic) response in humans. In the Cotton rat the adult worms cause local haemorrhages.
Pathology is due to both the adults and the eggs. Adults in the ileo-caecal arterioles cause an inflammatory (eosinophilic) response in humans. In the Cotton Rat the adult worms cause local haemorrhages.{{cn|date=January 2023}}


The intestinal wall is also affected. In humans there is a thickening of the intestinal wall (ileum, appendix and caecum). In rats with heavy infestations there is a yellow discolouring of the serial surface of the intestinal walls.
The intestinal wall is also affected. In humans there is a thickening of the intestinal wall (ileum, appendix and caecum). In rats with heavy infestations there is a yellow discolouring of the surface of the intestinal walls.{{cn|date=January 2023}}


== Clinical signs and diagnosis ==
== Clinical signs and diagnosis ==
Abdominal pain which presents as a palpable mass on clinical examination.
* Abdominal pain which presents as a palpable mass on clinical examination
Anorexia
* Anorexia
Diarrhoea
* Diarrhoea
* Vomiting
Vommiting

In the blood and tissue biopsy there is [[eosinophilia]]. Other methods of diagnosis from a biopsy are eggs and larvae in the blood vessels. Imaging of the liver and intestine can also be helpful. Serology is sometimes used to diagnose from a blood sample and there are specific [[enzyme-linked immunosorbent assay]]s (ELISA).


This is a rare disease. In [[Martinique]], a French island of the [[Antilles]], two confirmed cases and two probable cases were identified during an 18-year period (2000-2017), with an estimated incidence of 0.2 cases per year (0.003 case/year/100.000 inhabitants).<ref name="DardNguyen2018">{{cite journal|last1=Dard|first1=Céline|last2=Nguyen|first2=Duc|last3=Miossec|first3=Charline|last4=de Meuron|first4=Katia|last5=Harrois|first5=Dorothée|last6=Epelboin|first6=Loïc|last7=Cabié|first7=André|last8=Desbois-Nogard|first8=Nicole|title=''Angiostrongylus costaricensis'' infection in Martinique, Lesser Antilles, from 2000 to 2017|journal=Parasite|volume=25|year=2018|pages=22|issn=1776-1042|doi=10.1051/parasite/2018022|url= |pmid= 29633710 |pmc=5892178}} {{open access}}</ref>
In the blood and tissue biopsy there is eosinophillia. Other ways for diagnosis from a biopsy are eggs and larvae in the blood vessels. Imaging go the liver and intestine can also be helpful.
Serology is sometimes used to diagnose from a blood sample and there are specific ELISA.


== Diagnosis ==
== Diagnosis ==


Diagnosis is based primarily on detection of worms and/or eggs in biopsy specimens.<ref name=":0" />
{{Empty section|date=December 2012}}


== References ==
== References ==
{{Reflist}}
{{Reflist}}


{{Taxonbar|from=Q4763294}}
== External links ==


{{DEFAULTSORT:Angiostrongylus Costaricensis}}
{{DEFAULTSORT:Angiostrongylus Costaricensis}}
[[Category:Nematodes]]
[[Category:Strongylida]]
[[Category:Nematodes described in 1971]]
[[Category:Parasites of rodents]]
[[Category:Rodent-carried diseases]]
[[Category:Zoonoses]]




{{nematode-stub}}
{{Secernentea-stub}}

Latest revision as of 17:50, 22 January 2023

Angiostrongylus costaricensis
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Nematoda
Class: Chromadorea
Order: Rhabditida
Family: Angiostrongylidae
Genus: Angiostrongylus
Species:
A. costaricensis
Binomial name
Angiostrongylus costaricensis
Morera & Céspedes, 1971[1]

Angiostrongylus costaricensis is a species of parasitic nematode and is the causative agent of abdominal angiostrongyliasis in humans.[1] It occurs in Latin America and the Caribbean.[2][3]

Hosts

[edit]

Rodents are the normal definitive hosts, especially the cotton rat. Aberrant infections have occurred in many other mammals including humans.[3] Infection of mammalian hosts occurs via ingestion of L3 larvae in mollusc tissue (e.g. undercooked or raw snails or accidentally on produce) or possibly food contaminated with slime containing such larvae.[3]

Molluscs are the intermediate host and are infected through ingestion or penetration of the foot by L1 infective larvae from infected feces.

Pathology

[edit]

Pathology is due to both the adults and the eggs. Adults in the ileo-caecal arterioles cause an inflammatory (eosinophilic) response in humans. In the Cotton Rat the adult worms cause local haemorrhages.[citation needed]

The intestinal wall is also affected. In humans there is a thickening of the intestinal wall (ileum, appendix and caecum). In rats with heavy infestations there is a yellow discolouring of the surface of the intestinal walls.[citation needed]

Clinical signs and diagnosis

[edit]
  • Abdominal pain which presents as a palpable mass on clinical examination
  • Anorexia
  • Diarrhoea
  • Vomiting

In the blood and tissue biopsy there is eosinophilia. Other methods of diagnosis from a biopsy are eggs and larvae in the blood vessels. Imaging of the liver and intestine can also be helpful. Serology is sometimes used to diagnose from a blood sample and there are specific enzyme-linked immunosorbent assays (ELISA).

This is a rare disease. In Martinique, a French island of the Antilles, two confirmed cases and two probable cases were identified during an 18-year period (2000-2017), with an estimated incidence of 0.2 cases per year (0.003 case/year/100.000 inhabitants).[4]

Diagnosis

[edit]

Diagnosis is based primarily on detection of worms and/or eggs in biopsy specimens.[3]

References

[edit]
  1. ^ a b Morera, P., & Céspedes, R. (1971). Angiostrongylus costaricensis n. sp.(Nematoda: Metastrongyloidea), a new lungworm occurring in man in Costa Rica. Revista de Biología Tropical, 18(1-2), 173-185. PDF Open access icon
  2. ^ a b Teixeira, Carlos Graeff; Thiengo, Silvana C.; Thome, José Willibaldo; Medeiros, Aline Bueno; Camillo-Coura, Lea; Agostini, Aventino A. (1993). "On the diversity of mollusc intermediate hosts of Angiostrongylus costaricensis Morera & Cespedes, 1971 in southern Brazil". Memórias do Instituto Oswaldo Cruz. 88 (3): 487–9. doi:10.1590/S0074-02761993000300020. PMID 8107609.
  3. ^ a b c d e "CDC - DPDx - Angiostrongylus costaricensis". www.cdc.gov. 2019-06-19. Retrieved 2019-08-14.
  4. ^ Dard, Céline; Nguyen, Duc; Miossec, Charline; de Meuron, Katia; Harrois, Dorothée; Epelboin, Loïc; Cabié, André; Desbois-Nogard, Nicole (2018). "Angiostrongylus costaricensis infection in Martinique, Lesser Antilles, from 2000 to 2017". Parasite. 25: 22. doi:10.1051/parasite/2018022. ISSN 1776-1042. PMC 5892178. PMID 29633710. Open access icon