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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Diabetologia 27 (1984), S. 370-372 
    ISSN: 1432-0428
    Keywords: Type 2 diabetes ; HLA antigens ; Papua New Guinea ; diabetes genetics
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary HLA phenotypes were studied in 57 Type 2 (non-insulin-dependent) diabetic Papuan patients and the results compared with control subjects of the same Austronesian origin. An association was found between disease and BW62, a split antigen of B15, with corrected probability significant at the 5% level. The frequencies of B13 and BW22 were also increased in diabetic patients but the differences were not statistically significant. Although it has been postulated that Melanesian communities have protection against diabetes, they have a high frequency of BW62, which would imply, from the association found in this study, that susceptibility to Type 2 diabetes has yet to become manifest in them.
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 1432-1459
    Keywords: Key words Blepharospasm ; Dystonia ; Parkinsonism
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract It has been suggested that a lesion in the dopaminergic neurons of the substantia nigra pars compacta combined with eye irritation is involved in the pathophysiology of idiopathic blepharospasm. If so, these patients might be prone to develop Parkinson’s disease or a parkinsonian syndrome. We therefore conducted a validated questionnaire-based follow-up study to estimate (a) the frequency of local eye disorders at onset and (b) frequency of development of parkinsonian symptoms in blepharospasm patients. Ninety-nine patients previously diagnosed with idiopathic blepharospasm were sent a two-part questionnaire to assess parkinsonian and other symptoms associated with their condition. The average period of follow-up was 12.7 years, ranging from 3 to 26 years, with an average age at onset of 53.5 years. Sixty-two patients reported other ocular symptoms prior to or at the onset of blepharospasm, and therefore ocular disease may act as a trigger to produce blepharospasm in those already predisposed. Only two patients had developed a score on the parkinsonism rating scale indicating possible Parkinson’s disease, but clinical examination confirmed this not to be the case. If a lesion in the dopaminergic neurons is involved in blepharospasm, it would appear to be relatively minor (and non-progressive), since patients with idiopathic blepharospasm do not seem prone to develop parkinsonian symptoms.
    Type of Medium: Electronic Resource
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  • 3
    ISSN: 1432-1203
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary The distribution of the human liver alcohol dehydrogenase, ADH2, and aldehyde dehydrogenase, ALDH2, genotypes in 21 different populations comprising Mongoloids, Caucasoids, and Negroids was determined by hybridization of the amplified genomic DNA with allele-specific oligonucleotide probes. Whereas the frequency of the ADH 1 2 allele was found to be relatively high in the Caucasoids, Mexican Mestizos, Brazilian Indios, Swedish Lapps, Papua New Guineans and Negroids, the frequency of the ADH 2 2 gene was considerably higher in the Mongoloids and Australian Aborigines. The atypical ALDH2 gene (ALDH22) was found to be extremely rare in Caucasoids, Negroids, Papua New Guineans, Australian Aborigines and Aurocanians (South Chile). In contrast, this mutant gene was found to be widely prevalent among the Mongoloids. Individuals possessing the abnormal ALDH2 gene show alcohol-related sensitivity responses (e.g. facial flushing), have the tendency not to be habitual drinkers, and apparently suffer less from alcoholism and alcohol-related liver disease.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Copenhagen : International Union of Crystallography (IUCr)
    Acta crystallographica 57 (2001), S. 1332-1333 
    ISSN: 1399-0047
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Chemistry and Pharmacology , Geosciences , Physics
    Notes: A novel 40 kDa protein has been purified from dry secretions of the mammary gland of goats. The first 15 N-terminal residues were sequenced and showed a sequence identity of 30% to a novel 39 kDa whey protein from bovine mammary secretions. The protein was crystallized by the microdialysis method. Protein was dissolved to a concentration of 40 mg ml−1 in 0.025 M Tris–HCl pH 8.0 and equilibrated with the same buffer containing 19%(v/v) ethanol. The crystals belong to the orthorhombic space group P212121, with unit-cell parameters a = 66.1, b = 107.8, c = 63.2 Å and one molecule per asymmetric unit. Intensity data were collected to 2.9 Å resolution, with a completeness of 95%. Since no similar model is available in the protein structure database, heavy-atom derivatives have been prepared and three-dimensional structure determination using the isomorphous replacement method is in progress.
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Copenhagen : International Union of Crystallography (IUCr)
    Acta crystallographica 51 (1995), S. 1094-1096 
    ISSN: 1399-0047
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Chemistry and Pharmacology , Geosciences , Physics
    Notes: The lactoperoxidase was prepared from buffalo milk and purified using CM-Sephadex C-50 and Sephadex G-100. The activity of the enzyme was measured using 2,2′-azino-bis(3-ethylbenzthiazoline-6-sulfonic acid) diammonium salt as a chromogenic substrate at pH 6.0. The purified protein was crystallized from 0.01 M sodium phosphate buffer (pH 8.0) with 10%(v/v) ethanol by the sitting-drop vapour-diffusion method. The green-coloured plate-like crystals are orthorhombic in space group P212121 with unit-cell dimensions a = 116.9, b = 103.2 and c = 62.3 Å. The asymmetric unit contains one molecule with a solvent content of 52%. The crystals were stable in the X-ray beam and diffract beyond 3.2 Å. The native data to 3.5 Å have been collected and the structure determination is in progress.
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    Copenhagen : International Union of Crystallography (IUCr)
    Acta crystallographica 53 (1997), S. 116-118 
    ISSN: 1399-0047
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Chemistry and Pharmacology , Geosciences , Physics
    Notes: The glycosylated functional monoferric C-terminal half (C lobe) (Mr ∼40 kDa) of buffalo lactoferrin has been produced by limited proteolysis using proteinase K. The iron-saturated C lobe has been crystallized by microdialysis. The crystals belong to the monoclinic system, space group P21 with unit-cell dimensions of a = 44.4, b = 152.3, c= 38.8 Å and β = 105.5°. There is one protein molecule of 40 kDa in the asymmetric unit. A data set at 2.8 Å has been collected on an imaging-plate scanner.
    Type of Medium: Electronic Resource
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  • 7
    ISSN: 1744-313X
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology , Medicine
    Notes: The polymorphism of the human leucocyte antigen HLA-DR2 and the heterogeneity of HLA-DR2 class II-related haplotypes (HLA-DRB1-DRB5-DQA1-DQB1) were investigated in four populations of east and south-east Asia (SEA) and five Melanesian populations using TaqI restriction fragment length polymorphism (RFLP) analysis, and the polymerase chain reaction (PCR) amplification-based techniques PCR-RFLP and sequence-specific oligonucleotide (SSO) typing. The haplotype DRB1*1502-DRB5*0101-DQA1*0102-DQB1*0601 was common in Malaysians, Javanese, Thursday Islanders, Madang, Goroka and the Australian Aborigines, while DRB1*16021-DRB5*0101-DQA1*0102-DQB1*0502 was common in the Thai and Thursday Islanders. DRB1*1501-DRB5*0101-DQA1*0102-DQB1*0602 was present at a high frequency in Northern Chinese, Goroka, Watut and Australian Aborigines. The study describes four rare or unusual haplotypes: HLA-DRB1*1501-DRB5*0101-DQA1*0101-DQB1*0601, DRB1*1502-DRB5*0101-DQA1*0101-DQB1*0502, DRB1*1502-DRB5*0102-DQA1*0102-DQB1*0502 and DRB1*1501-DRB5*0101-DQA1*0101/2-DQB1*0503; the latter two were confirmed by segregation in two Javanese families. A new DR2 allele, initially detected by PCR-RFLP and confirmed by DNA sequencing as DRB1 * 16022 (previously designated DRB1 * 16Madang), was seen in a Madang individual. A new HLA-DR2 TaqI RFLP subtype, locally designated as DR15U, is also described. This RFLP subtype segregated in a Javanese family and correlated with a typically SEA haplotype, DRB1*1502-DRB5*0102-DQA1*0101-DQB1*0501. The allele HLA-DR16Thai, determined by TaqI DRB RFLP, was found by PCR-RFLP and SSO typing to correlate with a unique SEA haplotype, HLA-DRB1*16021-DRB5*0101-DQA1*0102-DQB1*0502, and was observed in the Thai, Malaysian, Thursday Islander, Javanese and Northern Chinese populations.
    Type of Medium: Electronic Resource
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  • 8
    Electronic Resource
    Electronic Resource
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 60 (1989), S. 803-805 
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: Refractive indices of water and several organic liquids have been determined by an accurate method using a He-Ne laser. The method is in principle simpler than those used normally for such measurements. The experimental arrangement presented here is capable of yielding results with an accuracy of the order of 2×10−5. Comparison between the measured values and precise published results shows that they are nearly same within experimental parameters.
    Type of Medium: Electronic Resource
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  • 9
    Electronic Resource
    Electronic Resource
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 54 (1989), S. 1722-1724 
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: The optical contrast between crystalline and ion beam amorphized regions in SiC has been studied by transmission spectrometry for photon energies ranging up to the ultraviolet. The working range of such an optical device with crystalline/amorphous patterns, e.g., for use as a photolithographic mask, is extended to considerably higher photon energies than with Si as a recording material. Thus, SiC, in the form of thin crystalline layers on a transparent substrate, is a promising candidate for submicron structuring in various fields of application.
    Type of Medium: Electronic Resource
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  • 10
    Electronic Resource
    Electronic Resource
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 62 (1987), S. 2313-2319 
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: A systematic investigation of the effects of antimony dopant on the electronic transport properties of amorphous (GeSe3.5)100−xSbx under high pressure (up to 120 kbar) has been carried out down to liquid-nitrogen temperature for the first time. Differential thermal analysis and x-ray diffraction methods were used for the characterization of freshly prepared and pressure-quenched materials which indicated the presence of structural phase transition in both GeSe3.5 and (GeSe3.5)100−xSbx around 105 kbar pressure. Electrical transport data revealed the strong compositional dependence of the electronic conduction process. A distinct kink in the conductivity temperature plot at pressures〉15 kbar was observed in the Sb-doped compositions indicating the presence of different conduction processes. An attempt has been made to interpret the pressure-induced effect in the transport properties of these glasses considering the possible presence of both thermally activated conduction in the extended states and hopping process in the localized tail states. However, the interpretation of the transport data is not straightforward and the pressure dependence of the thermoelectric power will be needed to complete the picture.
    Type of Medium: Electronic Resource
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