Type VII collagen associated with the basement membrane of amniotic epithelium forms giant anchoring rivets which penetrate a massive lamina reticularis

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Type VII collagen associated with the basement membrane of amniotic epithelium forms giant anchoring rivets which penetrate a massive lamina reticularis. / Ockleford, Colin; McCracken, Sharon; Hubbard, Andrew et al.
In: Placenta, Vol. 34, No. 9, 09.2013, p. 727-737.

Research output: Contribution to Journal/Magazine › Journal article › peer-review

Harvard

Ockleford, C, McCracken, S, Hubbard, A, Bright, N, Cockcroft, N, Jefferson, T, Waldron, E & d'Lacey, C 2013, 'Type VII collagen associated with the basement membrane of amniotic epithelium forms giant anchoring rivets which penetrate a massive lamina reticularis', Placenta, vol. 34, no. 9, pp. 727-737. https://doi.org/10.1016/j.placenta.2013.06.002

APA

Ockleford, C., McCracken, S., Hubbard, A., Bright, N., Cockcroft, N., Jefferson, T., Waldron, E., & d'Lacey, C. (2013). Type VII collagen associated with the basement membrane of amniotic epithelium forms giant anchoring rivets which penetrate a massive lamina reticularis. Placenta, 34(9), 727-737. https://doi.org/10.1016/j.placenta.2013.06.002

Vancouver

Ockleford C, McCracken S, Hubbard A, Bright N, Cockcroft N, Jefferson T et al. Type VII collagen associated with the basement membrane of amniotic epithelium forms giant anchoring rivets which penetrate a massive lamina reticularis. Placenta. 2013 Sept;34(9):727-737. Epub 2013 Jul 5. doi: 10.1016/j.placenta.2013.06.002

Author

Ockleford, Colin ; McCracken, Sharon ; Hubbard, Andrew et al. / Type VII collagen associated with the basement membrane of amniotic epithelium forms giant anchoring rivets which penetrate a massive lamina reticularis. In: Placenta. 2013 ; Vol. 34, No. 9. pp. 727-737.

Bibtex

@article{8ce426576e2e4ebe8481b422e43ee68a,

title = "Type VII collagen associated with the basement membrane of amniotic epithelium forms giant anchoring rivets which penetrate a massive lamina reticularis",

abstract = "In human amnion a simple cuboidal epithelium and underlying fibroblast layer are separated by an almost acellular compact layer rich in collagen types I and III. This (>10m) layer, which may be a thick lamina reticularis, apparently presents an unusual set of conditions. Integration of the multilaminous tissue across it is apparently achieved by waisted structures which we have observed with the light microscope in frozen, paraffin-wax and semi-thin resin sections. We have also captured transmission and scanning electron micrographs of the structures. These structures which cross the compact layer we call “rivets”. The composition of these “rivets” has been examined immunocytochemically and in three dimensions using the confocal laser scanning epi-fluorescence microscope. The rivets contain type VII collagen and an α6 integrin. They associate with type IV collagen containing structures (basement membrane lamina densa and spongy coils) and a special population of fibroblasts which may generate, maintain or anchor rivets to the underlying mesenchymal layer. Although Type VII collagen is well known to anchor basal lamina to underlying mesodermal collagen fibres these “rivets” are an order of magnitude larger than any previously described type VII collagen containing anchoring structures. Intriguing possible functions of these features include nodes for growth of fibrous collagen sheets and sites of possible enzymatic degradation during regulated amnion weakening approaching term. If these sites are confirmed to be involved in amnion degradation and growth they may represent important targets for therapeutic agents that are designed to delay Preterm Premature Rupture of the Membranes itself a major cause of fetal morbidity and mortality.",

keywords = "Amnion, Type VII collagen , Rupture of membranes, Rivets, Extracellular matrix , Fetal membranes",

author = "Colin Ockleford and Sharon McCracken and Andrew Hubbard and Nicholas Bright and Neil Cockcroft and Timothy Jefferson and Emma Waldron and Christopher d'Lacey",

year = "2013",

month = sep,

doi = "10.1016/j.placenta.2013.06.002",

language = "English",

volume = "34",

pages = "727--737",

journal = "Placenta",

issn = "0143-4004",

publisher = "Elsevier",

number = "9",

}

RIS

TY - JOUR

T1 - Type VII collagen associated with the basement membrane of amniotic epithelium forms giant anchoring rivets which penetrate a massive lamina reticularis

AU - Ockleford, Colin

AU - McCracken, Sharon

AU - Hubbard, Andrew

AU - Bright, Nicholas

AU - Cockcroft, Neil

AU - Jefferson, Timothy

AU - Waldron, Emma

AU - d'Lacey, Christopher

PY - 2013/9

Y1 - 2013/9

N2 - In human amnion a simple cuboidal epithelium and underlying fibroblast layer are separated by an almost acellular compact layer rich in collagen types I and III. This (>10m) layer, which may be a thick lamina reticularis, apparently presents an unusual set of conditions. Integration of the multilaminous tissue across it is apparently achieved by waisted structures which we have observed with the light microscope in frozen, paraffin-wax and semi-thin resin sections. We have also captured transmission and scanning electron micrographs of the structures. These structures which cross the compact layer we call “rivets”. The composition of these “rivets” has been examined immunocytochemically and in three dimensions using the confocal laser scanning epi-fluorescence microscope. The rivets contain type VII collagen and an α6 integrin. They associate with type IV collagen containing structures (basement membrane lamina densa and spongy coils) and a special population of fibroblasts which may generate, maintain or anchor rivets to the underlying mesenchymal layer. Although Type VII collagen is well known to anchor basal lamina to underlying mesodermal collagen fibres these “rivets” are an order of magnitude larger than any previously described type VII collagen containing anchoring structures. Intriguing possible functions of these features include nodes for growth of fibrous collagen sheets and sites of possible enzymatic degradation during regulated amnion weakening approaching term. If these sites are confirmed to be involved in amnion degradation and growth they may represent important targets for therapeutic agents that are designed to delay Preterm Premature Rupture of the Membranes itself a major cause of fetal morbidity and mortality.

AB - In human amnion a simple cuboidal epithelium and underlying fibroblast layer are separated by an almost acellular compact layer rich in collagen types I and III. This (>10m) layer, which may be a thick lamina reticularis, apparently presents an unusual set of conditions. Integration of the multilaminous tissue across it is apparently achieved by waisted structures which we have observed with the light microscope in frozen, paraffin-wax and semi-thin resin sections. We have also captured transmission and scanning electron micrographs of the structures. These structures which cross the compact layer we call “rivets”. The composition of these “rivets” has been examined immunocytochemically and in three dimensions using the confocal laser scanning epi-fluorescence microscope. The rivets contain type VII collagen and an α6 integrin. They associate with type IV collagen containing structures (basement membrane lamina densa and spongy coils) and a special population of fibroblasts which may generate, maintain or anchor rivets to the underlying mesenchymal layer. Although Type VII collagen is well known to anchor basal lamina to underlying mesodermal collagen fibres these “rivets” are an order of magnitude larger than any previously described type VII collagen containing anchoring structures. Intriguing possible functions of these features include nodes for growth of fibrous collagen sheets and sites of possible enzymatic degradation during regulated amnion weakening approaching term. If these sites are confirmed to be involved in amnion degradation and growth they may represent important targets for therapeutic agents that are designed to delay Preterm Premature Rupture of the Membranes itself a major cause of fetal morbidity and mortality.

KW - Amnion

KW - Type VII collagen

KW - Rupture of membranes

KW - Rivets

KW - Extracellular matrix

KW - Fetal membranes

UR - http://www.scopus.com/inward/record.url?scp=84879630934&partnerID=8YFLogxK

U2 - 10.1016/j.placenta.2013.06.002

DO - 10.1016/j.placenta.2013.06.002

M3 - Journal article

VL - 34

SP - 727

EP - 737

JO - Placenta

JF - Placenta

SN - 0143-4004

IS - 9

ER -

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