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Attention Score in Context
| Title |
Quantitative analysis of XG blood group and CD99 antigens on human red cells
|
|---|---|
| Published in |
Immunogenetics, July 2000
|
| DOI | 10.1007/s002510000193 |
| Pubmed ID | |
| Authors |
Claude Fouchet, Pierre Gane, Jean-Pierre Cartron, Claude Lopez |
| Abstract |
CD99, the product of the MIC2 gene, exhibits an erythroid-specific quantitative polymorphism co-regulated with the Xga blood group polymorphism. The co-expression of X-linked MIC2 and XG genes is presumably controlled at the transcriptional level by a single XGR locus in the pseudoautosomal region of sexual chromosomes. This locus is composed of two alleles, XGR(low) and XGR(high), which determine low or high CD99 levels (CD99-L, CD99-H) and the Xg(a-)/ Xg(a+) status. To test this hypothesis, the phenotypic relationship between Xga and CD99 antigens on human RBCs was investigated by quantitative flow cytometry using NBL-1 (anti-Xga) and 12E7 (anti-CD99) monoclonal antibodies and semi-quantitative estimate of membrane proteins and RNA by Western blot and Northern blot, respectively. The antibody binding capacity of RBCs, which is an estimation of the antigen density, was determined for 118 blood donors including 60 males and 58 females. Xg(a+) RBCs, which all belong to the group of CD99-H expressors, carry 159+/-13 and 960+/-50 copies of Xga and CD99 molecules/cell, respectively. Xg(a-) RBCs have no Xga antigen, but are subdivided into CD99-H (all male) and CD99-L expressors carrying 747+/-28 and 200+/-22 CD99 copies/cell, respectively, with identical CD99 levels between CD99-L males and females. However, among males, the CD99 expression was higher in Xg(a+) than in Xg(a-)/CD99-H individuals (P<0.01). In addition, CD99-H expressors in Xg(a+) males could be clearly subdivided into two categories, high and super high expressors, which are presumably heterozygous and homozygous for the XGR(high) allele, which fits the above hypothesis. This was not the case for Xg(a+) females where CD99-H subcategories were not found. Quantitative differences were confirmed by Western blot analysis of red cell membrane preparations from individuals of different Xga and CD99 phenotypes and by Northern blot analysis showing that the reticulocytes from CD99-L individuals expressed a reduced level of MIC2 transcripts compared to CD99-H donors. These findings further support the hypothesis of a single genetic control of CD99 and Xga expression by the XGR locus. |
Mendeley readers
The data shown below were compiled from readership statistics for 4 Mendeley readers of this research output. Click here to see the associated Mendeley record.
Geographical breakdown
| Country | Count | As % |
|---|---|---|
| United States | 1 | 25% |
| Unknown | 3 | 75% |
Demographic breakdown
| Readers by professional status | Count | As % |
|---|---|---|
| Student > Bachelor | 1 | 25% |
| Researcher | 1 | 25% |
| Student > Doctoral Student | 1 | 25% |
| Student > Master | 1 | 25% |
| Readers by discipline | Count | As % |
|---|---|---|
| Agricultural and Biological Sciences | 2 | 50% |
| Nursing and Health Professions | 1 | 25% |
| Medicine and Dentistry | 1 | 25% |
Attention Score in Context
This research output has an Altmetric Attention Score of 3. This is our high-level measure of the quality and quantity of online attention that it has received. This Attention Score, as well as the ranking and number of research outputs shown below, was calculated when the research output was last mentioned on 12 January 2021.
All research outputs
#8,534,976
of 25,374,647 outputs
Outputs from Immunogenetics
#350
of 1,215 outputs
Outputs of similar age
#13,226
of 39,276 outputs
Outputs of similar age from Immunogenetics
#4
of 12 outputs
Altmetric has tracked 25,374,647 research outputs across all sources so far. This one is in the 43rd percentile – i.e., 43% of other outputs scored the same or lower than it.
So far Altmetric has tracked 1,215 research outputs from this source. They receive a mean Attention Score of 4.2. This one is in the 28th percentile – i.e., 28% of its peers scored the same or lower than it.
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We're also able to compare this research output to 12 others from the same source and published within six weeks on either side of this one. This one is in the 1st percentile – i.e., 1% of its contemporaries scored the same or lower than it.