Coelomocytes: Biology and Possible Immune Functions in Invertebrates with Special Remarks on Nematodes
All metazoans are exposed to a wide range of microbes and have evolved complex immune defenses used to repel infectious agents. Coelomocytes play a key role in the defense reactions of most invertebrates. They are involved in important immune functions, such as phagocytosis, encapsulation, graft rej...
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| Format: | Article |
| Language: | English |
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Wiley
2009-01-01
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| Series: | International Journal of Zoology |
| Online Access: | http://dx.doi.org/10.1155/2009/218197 |
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| author | Qudsia Tahseen |
| author_facet | Qudsia Tahseen |
| author_sort | Qudsia Tahseen |
| collection | DOAJ |
| description | All metazoans are exposed to a wide range of microbes and have evolved complex immune defenses used to repel infectious agents. Coelomocytes play a key role in the defense reactions of most invertebrates. They are involved in important immune functions, such as phagocytosis, encapsulation, graft rejection, and inflammation, as well as the synthesis and secretion of several humoral factors especially in annelids and echinoderms. Coelomocytes in nematodes are variable in shapes from round, ovoid, cuboidal, and spindle-shaped to stellate or branched cells that are found usually at fixed positions in the pseudocoelom. Their number usually varies from 2 to 6. The model nematode, C. elegans lacks an adaptive immune system and the coelomocytes are capable of endocytosis, but their involvement in phagocytosis of bacteria seems unlikely. The aim of this review is to evaluate current knowledge on coelomocytes of invertebrates with special reference to nematodes. The morphology and structure of these coelomocytes are discussed along with their origin. Their relative positions and diversity in different nematode groups have also been discussed and illustrated. |
| format | Article |
| id | doaj-art-5b78c675547a4aeb80f746161eefb70b |
| institution | Kabale University |
| issn | 1687-8477 1687-8485 |
| language | English |
| publishDate | 2009-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | International Journal of Zoology |
| spelling | doaj-art-5b78c675547a4aeb80f746161eefb70b2025-02-03T01:21:07ZengWileyInternational Journal of Zoology1687-84771687-84852009-01-01200910.1155/2009/218197218197Coelomocytes: Biology and Possible Immune Functions in Invertebrates with Special Remarks on NematodesQudsia Tahseen0Nematode Research Laboratory, Department of Zoology, Aligarh Muslim University, Aligarh 202002, IndiaAll metazoans are exposed to a wide range of microbes and have evolved complex immune defenses used to repel infectious agents. Coelomocytes play a key role in the defense reactions of most invertebrates. They are involved in important immune functions, such as phagocytosis, encapsulation, graft rejection, and inflammation, as well as the synthesis and secretion of several humoral factors especially in annelids and echinoderms. Coelomocytes in nematodes are variable in shapes from round, ovoid, cuboidal, and spindle-shaped to stellate or branched cells that are found usually at fixed positions in the pseudocoelom. Their number usually varies from 2 to 6. The model nematode, C. elegans lacks an adaptive immune system and the coelomocytes are capable of endocytosis, but their involvement in phagocytosis of bacteria seems unlikely. The aim of this review is to evaluate current knowledge on coelomocytes of invertebrates with special reference to nematodes. The morphology and structure of these coelomocytes are discussed along with their origin. Their relative positions and diversity in different nematode groups have also been discussed and illustrated.http://dx.doi.org/10.1155/2009/218197 |
| spellingShingle | Qudsia Tahseen Coelomocytes: Biology and Possible Immune Functions in Invertebrates with Special Remarks on Nematodes International Journal of Zoology |
| title | Coelomocytes: Biology and Possible Immune Functions in Invertebrates with Special Remarks on Nematodes |
| title_full | Coelomocytes: Biology and Possible Immune Functions in Invertebrates with Special Remarks on Nematodes |
| title_fullStr | Coelomocytes: Biology and Possible Immune Functions in Invertebrates with Special Remarks on Nematodes |
| title_full_unstemmed | Coelomocytes: Biology and Possible Immune Functions in Invertebrates with Special Remarks on Nematodes |
| title_short | Coelomocytes: Biology and Possible Immune Functions in Invertebrates with Special Remarks on Nematodes |
| title_sort | coelomocytes biology and possible immune functions in invertebrates with special remarks on nematodes |
| url | http://dx.doi.org/10.1155/2009/218197 |
| work_keys_str_mv | AT qudsiatahseen coelomocytesbiologyandpossibleimmunefunctionsininvertebrateswithspecialremarksonnematodes |