Studies on Hereditary Spherocytosis in Iceland
ABSTRACT Thirty members with typical hereditary spherocytosis (HS) and over 90 apparently unaffected members belonging to 12 families have been studied. Splenectomy has been performed on 22 HS patients. Of nine HS individuals, who had not undergone surgical treatment in 1957, four suffered from temp...
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crwiley:10.1111/j.0954-6820.1977.tb15680.x 2024-09-09T19:47:17+00:00 Studies on Hereditary Spherocytosis in Iceland Jensson, ólafur Jónasson, Jóhann L. Magnússon, Sigmundur 1977 http://dx.doi.org/10.1111/j.0954-6820.1977.tb15680.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.0954-6820.1977.tb15680.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.0954-6820.1977.tb15680.x en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Acta Medica Scandinavica volume 201, issue 1-6, page 187-195 ISSN 0001-6101 journal-article 1977 crwiley https://doi.org/10.1111/j.0954-6820.1977.tb15680.x 2024-08-06T04:12:47Z ABSTRACT Thirty members with typical hereditary spherocytosis (HS) and over 90 apparently unaffected members belonging to 12 families have been studied. Splenectomy has been performed on 22 HS patients. Of nine HS individuals, who had not undergone surgical treatment in 1957, four suffered from temporary severe anaemia, presumably due to aplastic crisis associated with influenza. One of them died, a male 18 years of age. Pedigree studies on one of the families indicate that the HS gene or genes have been transmitted through six generations over the past 200 years. Marked deficiency in the number of affected compared with the apparently unaffected members in the HS families is present. The most striking example of uneven genetic ratio is a sibship of 15 members investigated haematologically, with one suffering from typical HS. Much reduced penetration of the HS gene or the presence of the so‐called “mild form” is upheld as the main explanation for the unevenness in the genetic ratio. However, families are also present in which abortions and death at an early age indicated that selection against the affected could also disturb the genetic ratio in HS families. Article in Journal/Newspaper Iceland Wiley Online Library Acta Medica Scandinavica 201 1-6 187 195 |
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Wiley Online Library |
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crwiley |
language |
English |
description |
ABSTRACT Thirty members with typical hereditary spherocytosis (HS) and over 90 apparently unaffected members belonging to 12 families have been studied. Splenectomy has been performed on 22 HS patients. Of nine HS individuals, who had not undergone surgical treatment in 1957, four suffered from temporary severe anaemia, presumably due to aplastic crisis associated with influenza. One of them died, a male 18 years of age. Pedigree studies on one of the families indicate that the HS gene or genes have been transmitted through six generations over the past 200 years. Marked deficiency in the number of affected compared with the apparently unaffected members in the HS families is present. The most striking example of uneven genetic ratio is a sibship of 15 members investigated haematologically, with one suffering from typical HS. Much reduced penetration of the HS gene or the presence of the so‐called “mild form” is upheld as the main explanation for the unevenness in the genetic ratio. However, families are also present in which abortions and death at an early age indicated that selection against the affected could also disturb the genetic ratio in HS families. |
format |
Article in Journal/Newspaper |
author |
Jensson, ólafur Jónasson, Jóhann L. Magnússon, Sigmundur |
spellingShingle |
Jensson, ólafur Jónasson, Jóhann L. Magnússon, Sigmundur Studies on Hereditary Spherocytosis in Iceland |
author_facet |
Jensson, ólafur Jónasson, Jóhann L. Magnússon, Sigmundur |
author_sort |
Jensson, ólafur |
title |
Studies on Hereditary Spherocytosis in Iceland |
title_short |
Studies on Hereditary Spherocytosis in Iceland |
title_full |
Studies on Hereditary Spherocytosis in Iceland |
title_fullStr |
Studies on Hereditary Spherocytosis in Iceland |
title_full_unstemmed |
Studies on Hereditary Spherocytosis in Iceland |
title_sort |
studies on hereditary spherocytosis in iceland |
publisher |
Wiley |
publishDate |
1977 |
url |
http://dx.doi.org/10.1111/j.0954-6820.1977.tb15680.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.0954-6820.1977.tb15680.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.0954-6820.1977.tb15680.x |
genre |
Iceland |
genre_facet |
Iceland |
op_source |
Acta Medica Scandinavica volume 201, issue 1-6, page 187-195 ISSN 0001-6101 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1111/j.0954-6820.1977.tb15680.x |
container_title |
Acta Medica Scandinavica |
container_volume |
201 |
container_issue |
1-6 |
container_start_page |
187 |
op_container_end_page |
195 |
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1809916762263650304 |