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FS01.2 Contact dermatitis to disperse blue 106 in Portugal (2004)

Brandao, Francisco M ; Azenha, A ; Barros, MA ; [et al.]

Oxford, UK; Malden, USA : Blackwell Science Ltd/Inc.

Contact dermatitis 50 (2004), S. 0

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ISSN: 1600-0536

Source: Blackwell Publishing Journal Backfiles 1879-2005

Topics: Medicine

Notes: Disperse blue 106 is one of the most important allergenic textile dyes. We reviewed all the patients that proved to be allergic to this dye, in 10 contact clinics, in Portugal, from 01/2000 to 06/2003. In the first 2 years disperse blue 106 was only tested in suspected cases, while in 2002/2003 it was routinely tested in our standard series. A total of 8957 patients (2797M + 6160F) were tested; fifty five patients (17M + 38F)(0.6%) were allergic to the dye, with a significant difference in incidence between the 2 periods (0.2 to 0.9%); a current relevance was found in 38 (69%) patients. In 5 patients the dermatitis was considered occupational. The main localizations were the axillae (25p), the antecubital fossae and the face (13p each), the neck (11p), the feet (8p), the hands and then trunk (7p each). Thirty six out of 44 patients (80%) that were tested with disperse blue 124 were allergic to this dye. Simultaneous reactions to PPDA and to fragrance mix were observed in 12 and 11 patients, respectively. Allergy to other dyes was found in 15 patients. Blouses and skirts were the main offending garments that induced contact allergy. Although both disperse blue 106 and 124 have been reported as frequent sensitizers, it proved not to be such an important allergen in Portugal. However, if tested routinely it can pick up some unexpected relevant allergic patients.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1111/j.0105-1873.2004.0309l.x

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Response of rice cultivars to phosphorus supply on an oxisol (1988)

Fageria, N. K. ; Morais, O. P. ; Baligar, V. C. ; [et al.]

Springer

Nutrient cycling in agroecosystems 16 (1988), S. 195-206

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ISSN: 1573-0867

Keywords: Genotypic differences ; Oryza sativa L. ; oxisol ; P-uptake efficiency ; upland rice

Source: Springer Online Journal Archives 1860-2000

Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition

Notes: Abstract Genotypic differences in absorption or utilization of P might be exploited to improve efficiency of fertilizer use or to obtain higher productivity on P-deficient soils. The objective of this study was to evaluate responses by 75 genotypes of upland rice (Oryza sativa L.) to two soil P levels in two field experiments. In the first experiment, soil P levels (Mehlich 1) were 1.5 mg kg−1 and 5 mg kg−1, and in the second experiment, 3 mg kg−1 and 4.7 mg kg−1 of soil, respectively. Rice cultivars differed significantly in shoot dry matter production at flowering, grain yield, and plant P status. Based on a grain yield efficiency index, cultivars were classified as P-efficient or P-inefficient. Shoot dry matter was more sensitive to P-deficiency but was not related to grain yield. Phosphorus use efficiency was higher under the low P treatment. Phosphorus uptake was significantly correlated with dry matter, P concentration and P-efficiency ratio. Results of this study indicate that genetic differences in P-use efficiency exist among upland rice cultivars and may be exploited in breeding programs.