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  • 1
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    International journal of immunogenetics 21 (1994), S. 0 
    ISSN: 1744-313X
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology , Medicine
    Notes: Selective IgM deficiency is found commonly in patients with Bloom's syndrome (BS). Serum IgM concentrations were low though serum IgG and IgA concentrations were normal in both patients with BS included in the study. In a previous study the authors showed that selective IgM deficiency in BS is due to an abnormality in the maturation of surface IgM-bearing cells into IgM-secreting cells and a failure of secreted μ (μ s) mRNA synthesis. The membrane-bound μ (μ m) and μ s mRNA are produced from transcripts of a single immunoglobulin μ gene by alternative RNA processing pathways. The control of μ s mRN A synthesis depends on the addition of poly(A) to μ s C-terminal segment. The study described here demonstrated that there was no mutation or deletion in the sequence including μ s C-terminal coding sequence, the RNA splice site (GG/TAAAC) at the 5’ end of μ s C-terminal segment, and the AATAAA poly(A) signal sequence, and second GT-rich element immediately down-stream of the cleavage site in both patients.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Scandinavian journal of immunology 36 (1992), S. 0 
    ISSN: 1365-3083
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: We report a case of common variable immunodeficiency (CVI) that shows low levels of IgG and IgA, but a normal quantitative or qualitalive level of IgM. T-cell functions were not disturbed. Increased numbers of surface IgM (sIgM) and sIgD, sIgM and sIgA, sIgM and sIgA double bearing B cells were observed as compared with a control. No IgG and IgA induction upon stimulation with Staphylococcus aureus Cowan I (SAC)and recombinant interleukin-2(rIL-2), or pokeweed mitogen (PWM) and rIL-4 or rIL-6 was observed, although there was proliferation. Although; μ mRNA was expressed as much as in a healthy control, transcription of γ mRNA and α mRNA was very low. Furthermore, no enhanced effects of γ mRNA and α mRNA were recognized upon stimulation with rIL-4 and rIL-6. These results suggest that the patient's B cells might be detective at the switching process from μ, μ and δ, μ and γ to γ or μ and α to α.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Scandinavian journal of immunology 38 (1993), S. 0 
    ISSN: 1365-3083
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: In most patients with Bloom's syndrome (BS), selective IgM deficiency is commonly found. We examined proliferative responses by incorporation of [3H]-thymidine and the production of immunoglobulin after ultraviolet B (UVB) irradiation in the cells of two patients with BS. With regard to the proliferative responses in peripheral blood mononuclear cells (PBMC) cultured with pokeweed mitogen (PWM), the patients' PBMC were more sensitive to UVB irradiation than controls. Although the effect of UVB irradiation in lymphoblastoid cell lines (LCL) after 0 days of culture showed no difference between one patient and controls, the patient's LCL were more sensitive to UVB than the controls after 3 and 7 days of culture. These results suggest that the proliferative responses of the patient's LCL recovered later than those of controls. IgM production was the most sensitive to UVB in the patients' PBMC and LCL. IgG and IgA production in the patients' PBMC and LCL showed the same sensitivity as controls. From our results, it is suspected that the preferential damage to IgM production by UVB is connected with the selective IgM deficiency of BS.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Scandinavian journal of immunology 32 (1990), S. 0 
    ISSN: 1365-3083
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Five heterogeneous IgA-immunodeficient patients were analysed for expression of the α-chain gene. The number of surface IgA-bearing B cells was low in four patients Southern blot analysis indicated no deletion of immunoglobulin structural genes coding for Cα or α switching-region genes. The number of surface IgM and IgA double-bearing B cells increased in some patients. Addition of recombinant tnterieukin 4 (rIL-4). rIL.-5. and rIL-6 to the normal B cells enhanced IgA production. However. B cells of the patients showed no or one-third lower IgA production in response to these lymphokines, even though there was proliferation ill 4, rIL -5, and rIL-6 induced low or no expression of α mRNA of the patients B cells These results suggested that the patients lacked B cells able to produce transcripts for the IgA heavy chain, and that some patients’B cells might be defective at the switch-recombination process from u to a or from μ to α or from μ and α to α.
    Type of Medium: Electronic Resource
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  • 5
    ISSN: 1365-2222
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Five patients with atopic dermatitis (AD) who were sensitive to hen's egg were observed before and after natural measles virus infection. Within 4 weeks of natural measles virus infection, the eczematous lesions clearly improved in four of the five patients in whom neither offending foods were eliminated, nor anti-allergic drugs, systemic steroids and steroid ointment administered. This was accompanied by reduced proliferative responses of peripheral blood mononuclear cells (PBMCs) to ovalbumin (OA). Another patient showed a transient improvement of AD symptoms, from severe to mild, and thereafter returned to severe accompanied by increased proliferative responses of PBMCs to OA. Radioallergosorbent test (RAST) scores for hen's egg in all five patients did not change in each level in each patient, except the transiently decreased RAST scores for hen's egg in one patient, after the infection. Thus, in patients with AD who are sensitive to food, the improvement of AD symptoms that appeared within 4 weeks of natural measles virus infection was related to reduced proliferative responses of PBMCs to the food antigen following the infection.
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Clinical & experimental allergy 24 (1994), S. 0 
    ISSN: 1365-2222
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: This study was designed to analyse prostaglandins (PGs) in human nasal lavage- fluid using the combination of microcolumn high performance liquid chromatography and a He/Cd laser induced fluorescence detection system. Forty-seven patients with allergic rhinitis and 12 healthy volunteers were investigated. Four species of PG. i.e. PGD2, PGE2, PGF2x and 6-keto-PGF1, were detected in the nasal lavage fluid. Concentrations of PGD2; (1.33 ± 0.17 nmol/ml) and PGE2 (0.87 ± 0.11 nmol/ml) in nasal lavage fluid from patients with allergic rhinitis (the allergy group) were significantly increased compared with those of volunteers (the control group, 0.23 ± 0.16 nmol/ml, 0.29 ±0.19 nmol/ml, respectively). On the other hand, no significant differences were observed in concentrations of cither PGF2x, or 6-keto-PGF1x between the control group and the allergy group. Histamine concentration in nasal lavage fluid was significantly increased in the allergy group (53 ± 7.6 nmol/l) compared with the control group (3.4 ± 1.0 nmol/1). No significant correlation was observed between PGD2 and histamine concentration (r= 0.24), or between PGE2 and histamine concentration (r= 0.08) in nasal lavage fluid from patients with allergic rhinitis. Treatment with oxatomide, an anti-histamine and anti-allergic drug, significantly improved symptom scores, but did not alleviate them completely. Concentrations of each PG detected in nasal lavage fluid did not change significantly after oxatomide treatment. It is concluded that, not only histamine but also PGs, particularly PGD2 and PGE2, might be involved in the genesis of allergic rhinitis.
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    Amsterdam : Elsevier
    Journal of Crystal Growth 109 (1991), S. 212-217 
    ISSN: 0022-0248
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Chemistry and Pharmacology , Geosciences , Physics
    Type of Medium: Electronic Resource
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  • 8
    Electronic Resource
    Electronic Resource
    Amsterdam : Elsevier
    Solid State Ionics 3-4 (1981), S. 443-446 
    ISSN: 0167-2738
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Physics
    Type of Medium: Electronic Resource
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  • 9
    Electronic Resource
    Electronic Resource
    Amsterdam : Elsevier
    Applied Surface Science 33-34 (1988), S. 611-618 
    ISSN: 0169-4332
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Physics
    Type of Medium: Electronic Resource
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  • 10
    Electronic Resource
    Electronic Resource
    Amsterdam : Elsevier
    Biochimica et Biophysica Acta (BBA)/General Subjects 35 (1959), S. 102-110 
    ISSN: 0304-4165
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology , Chemistry and Pharmacology , Medicine , Physics
    Type of Medium: Electronic Resource
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