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Journal articleVANDERVEEN P, ARST HN, FLIPPHI MJA, et al., 1994,
EXTRACELLULAR ARABINASES IN ASPERGILLUS-NIDULANS - THE EFFECT OF DIFFERENT CRE MUTATIONS ON ENZYME LEVELS
, ARCHIVES OF MICROBIOLOGY, Vol: 162, Pages: 433-440, ISSN: 0302-8933- Author Web Link
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- Citations: 27
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Journal articleSPANU P, GROSSKOPF DG, FELIX G, et al., 1994,
THE APPARENT TURNOVER OF 1-AMINOCYCLOPROPANE-1-CARBOXYLATE SYNTHASE IN TOMATO CELLS IS REGULATED BY PROTEIN-PHOSPHORYLATION AND DEPHOSPHORYLATION
, PLANT PHYSIOLOGY, Vol: 106, Pages: 529-535, ISSN: 0032-0889- Author Web Link
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- Citations: 106
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Journal articleCookson W, 1994,
Atopy: a complex genetic disease.
, Ann Med, Vol: 26, Pages: 351-353, ISSN: 0785-3890 -
Journal articleCookson W, 1994,
The genetics of atopy.
, J Allergy Clin Immunol, Vol: 94, Pages: 643-644, ISSN: 0091-6749 -
Journal articleMoffatt MF, Hill MR, Cornélis F, et al., 1994,
Genetic linkage of T-cell receptor alpha/delta complex to specific IgE responses.
, Lancet, Vol: 343, Pages: 1597-1600, ISSN: 0140-6736IgE responses to inhaled proteins underlie the clinical syndrome of allergic (atopic) asthma and rhinitis. We have investigated genetic linkage between specific IgE reactions to highly purified major allergens and the T-cell receptor (TCR) alpha and beta gene complexes on chromosome 14 and 7, respectively. Antigens tested included highly purified proteins from the housedust mite Dermatophagoides pteronyssinus, the domestic cat and dog, grass pollen, and the mould Alternaria alternata. Affected sibling-pair methods were used in two independent sets of families, one in the UK and one in Australia. No linkage of IgE serotypes to TCR-beta was detected, but significant linkage to TCR-alpha was seen in both family groups. For several of the IgE phenotypes investigated (positive responses to whole allergen sources or purified antigens or serum IgE above the 70th percentile in the population) the affected sibling-pairs showed significant sharing of TCR-alpha microsatellite alleles from both parents. The results show that a gene (or genes) in the TCR-alpha region modifies specific IgE responses.
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Journal articleShirakawa T, Li A, Dubowitz M, et al., 1994,
Association between atopy and variants of the beta subunit of the high-affinity immunoglobulin E receptor.
, Nat Genet, Vol: 7, Pages: 125-129, ISSN: 1061-4036The beta-subunit of the high-affinity IgE receptor (Fc epsilon RI-beta) on chromosome 11 is maternally linked to atopy, the state of enhanced IgE responsiveness underlying allergic asthma and rhinitis. We have identified a common variant of Fc epsilon RI-beta, lle181Leu within the 4th transmembrane domain. Leu181 shows significant association with positive IgE responses in a random patient sample. Amongst 60 unrelated nuclear families with allergic asthmatic probands, Leu181 is identified in 10 (17%), is maternally inherited in each, and shows a strong association with atopy. Our data indicate that Fc epsilon RI-beta, subject to maternal modification, may be the atopy-causing locus on chromosome 11q.
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Journal articleSTAFFORD AN, RIDER SH, HOPKIN JM, et al., 1994,
A 2.8 MB YAC CONTIG IN 11Q12-Q13 LOCALIZES CANDIDATE GENES FOR ATOPY - FC-EPSILON-RI-BETA AND CD20
, HUMAN MOLECULAR GENETICS, Vol: 3, Pages: 779-785, ISSN: 0964-6906- Author Web Link
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- Citations: 29
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Journal articleYoung RP, Dekker JW, Wordsworth BP, et al., 1994,
HLA-DR and HLA-DP genotypes and immunoglobulin E responses to common major allergens.
, Clin Exp Allergy, Vol: 24, Pages: 431-439, ISSN: 0954-7894In order to test for human histocompatibility leucocyte antigens (HLA) class II restriction of IgE responses, 431 subjects from 83 families were genotyped at the HLA-DR and HLA-DP loci and serotyped for IgE responses to six major allergens from common aero-allergen sources. A possible excess of HLA-DR1 was found in subjects who were responsive to Fel d I compared with those who were not (Odds Ratio (OR) = 2, P = 0.002), and a possible excess of HLA-DR4 was found in subjects responsive to Alt a I (OR = 1.9, P = 0.006). Increased sharing of HLA-DR/DP haplotypes was seen in sibling pairs responding to both allergens. Der p I, Der p II, Phl p V and Can f I were not associated with any definite excess of HLA-DR alleles. No significant correlations were seen with HLA-DP genotype and reactivity to any of the allergens. The results suggest class II HLA restriction is insufficient to account for individual differences in reactivity to common allergens.
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Journal articleDESAI SR, WELLS AU, CHEAH FK, et al., 1994,
THE REPRODUCIBILITY OF BRONCHIAL CIRCUMFERENCE MEASUREMENTS USING COMPUTED-TOMOGRAPHY
, BRITISH JOURNAL OF RADIOLOGY, Vol: 67, Pages: 257-262, ISSN: 0007-1285- Author Web Link
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- Citations: 20
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Journal articleFowler PA, Cunningham P, Fraser M, et al., 1994,
Ciruclating gonadotrphin surge attenuating factor from superovulated women suppresses in vitro gonadotrophin-releasing hormone self-priming
, Journal of Endocrinology, Vol: 143, Pages: 45-54A perifusion system based on ovine pituitary tissue explants was used to investigate the effects of follicular fluid (hFF) and serum from superovulated women on pituitary responsiveness to gonadotrophin-releasing hormone (GnRH). The specific aims of the study were to determine both if gonadotrophin surge-attenuating factor (GnSAF) bioactivity is present in the peripheral circulation as well as in the follicles of superovulated women and if GnSAF suppresses GnRH self-priming in vitro. Two pulses of GnRH, 1 h apart, produced marked peaks in LH secreted from control chambers, with GnRH self-priming evident in the significant difference between the first (134.4 +/- 1.7 - 232.1 +/- 24.0% of basal secretion) and second (183.9 +/- 15.8 - 313.9 +/- 14.0% of basal secretion) LH peaks. Both follicular fluid and serum pooled from two different groups of women produced marked suppression of the first (unprimed) and second (primed) LH peaks. The hFF reduced the first LH peak to 69.6 +/- 7.8 and 60.2 +/- 9.7% and the second LH peak to 57.4 +/- 6.7 and 42.6 +/- 6.5% of control LH secretion. Overall, the serum reduced the first and second LH peaks to 76.8 +/- 4.2 and 62.9 +/- 3.6% of control respectively. These results demonstrated that GnSAF bioactivity suppresses GnRH self-priming, and is present in both the peripheral circulation and hFF. The same material administered to dispersed ovine pituitary monolayers produced similar marked suppression of GnRH-induced LH secretion, with approximately 50-fold less GnSAF bioactivity in serum compared with hFF. Combined doses of oestradiol and progesterone, or hFF from large follicles containing little GnSAF, produced stimulation of GnRH-induced LH secretion and GnRH self-priming (second peaks 78.1 +/- 38.9 and 27.4 +/- 15.7% respectively higher than first peaks). Thus, in conclusion, GnSAF in hFF and serum markedly attenuated both unprimed and primed pituitary response to GnRH, virtually abolishing the GnRH self-priming effect.
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