| 1. |
- Arlehag, L, et al.
(författare)
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ATM expression in rectal cancers with or without preoperative radiotherapy
- 2005
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Ingår i: Oncology Reports. - 1021-335X .- 1791-2431. ; 14:2, s. 313-317
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Tidskriftsartikel (refereegranskat)abstract
- Patients with ATM (Ataxia-Telangiectasia mutated) mutation show increased sensitivity to radiation and have a higher risk of developing malignancies. The present study aimed to investigate whether ATM expression was related to radiotherapy, and clinicopathological and biological variables in rectal cancers. ATM expression was immunohistochemically examined in 78 rectal cancers from patients who participated in a Swedish rectal cancer trial of preoperative radiotherapy. Of 78 patients, 44 underwent surgery alone, and 34 underwent both preoperative radiotherapy and surgery. Fifty-eight cases had normal rectal mucosa adjacent to the tumour. The results showed that, compared to normal mucosa, tumours had less nuclear (p=0.03) but more cytoplasmic expression of ATM (p=0.004). In tumours, less expression of ATM, either in the nucleus (p=0.07) or in the cytoplasm (p=0.02 for staining intensity, and p=0.07 for staining percentage), tended to be correlated with male patients. Also, ATM expression was not related to radiotherapy or other clinicopathological and biological variables (p > 0.05). In conclusion, the pattern of ATM expression was changed from normal mucosa to tumour. Less expression of ATM may be related to males.
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| 2. |
- Xu, B, et al.
(författare)
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Beta2-adrenergic receptor gene single-nucleotide polymorphisms are associated with rheumatoid arthritis in northern Sweden.
- 2004
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Ingår i: Scandinavian Journal of Rheumatology. - Oslo : Taylor & Francis. - 0300-9742 .- 1502-7732. ; 33:6, s. 395-398
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Tidskriftsartikel (refereegranskat)abstract
- The beta2-adrenergic receptor (beta2-AR) belongs to the group of G-protein-coupled receptors and is present on skeletal and cardiac muscle cells and on lymphocytes. The gene encoding beta2-AR (ADRB2) displays a moderate degree of heterogeneity in the human population and the distributions of single-nucleotide polymorphisms (SNPs) at amino acid positions 16, 27, and 164 are changed in asthma, obesity, and hypertension and in the autoimmune disease myasthenia gravis. An involvement of the beta2-AR has also been suggested in human rheumatoid arthritis (RA) and its animal model. We describe here an increased prevalence of the alleles Arg16 and Gln27 and a lower prevalence of homozygosis for Gly16 and Glu27 in patients with RA. Patients having the genotype combination GlyGly16-GlnGlu27 had higher levels of rheumatoid factor (RF) and a more active disease than other patients. Patients having the genotype Arg16-Gln27+ had higher levels of RF when compared to those having Arg16+Gln27+, and patients who were carriers of Gln27 had a more active disease than non-carriers of Gln27. Our results show an association of beta2-AR SNPs with RA in a population from the northern part of Sweden. Our study also confirms the strong linkage disequilibrium of genotypes at amino acid positions 16 and 27.
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| 3. |
- Xu, B-Y, et al.
(författare)
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beta2 Adrenoceptor gene single nucleotide polymorphisms are associated with rheumatoid arthritis in northern Sweden.
- 2005
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Ingår i: Annals of the Rheumatic Diseases. - London : BMJ Publ. Group. - 0003-4967 .- 1468-2060. ; 64:5, s. 773-776
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Tidskriftsartikel (refereegranskat)abstract
- Background: β2 Adrenoceptor (β2-AR) represents a link between the sympathetic nervous system and the immune system, and may be involved in human rheumatoid arthritis (RA). The gene encoding β2-AR contains three single nucleotide polymorphisms (SNPs) at amino acid positions 16, 27, and 164. Objective: To examine the common variants at positions 16 and 27 and their association with RA. Methods: An allele-specific polymerase chain reaction to determine the common variants at positions 16 and 27 was used in 154 patients with RA and 198 ethnically matched healthy subjects from northern Sweden. Results: Carriage of Arg16 and of Gln27 was associated with RA. Carriage of Gln27 was associated with activity of the disease and in combination with non-carriage of Arg16 with higher levels of rheumatoid factor. Conclusion: The β2-AR SNPs may thus constitute an additional non-major histocompatibility complex association in RA.
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