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  • Bostrichidae  (3)
  • Kidney transplantation  (3)
  • 1
    Electronic Resource
    Electronic Resource
    Infestation of maize by Prostephanus truncatus initiated by male-produced pheromone (1997)
    Springer
    Entomologia experimentalis et applicata 83 (1997), S. 53-61 
    Details
    ISSN: 1570-7458
    Keywords: larger grain borer ; Prostephanus truncatus ; Bostrichidae ; pheromone
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Delta traps baited with maize cobs, which were infested each with one male Prostephanus truncatus (Horn) (Col.: Bostrichidae), were distributed in southern Benin and collected after one, two, three and four weeks. The numbers of P. truncatus caught during the different trapping periods were not significantly different. Sixty-four percent of the trapped P. truncatus were females. Females attracted during the one-week trapping period produced a mean of 6.9 progeny during the seven days. The sex ratio of the progeny was 1:1. Trap catches with the infested cobs were on average 13 times lower than catches with 2 mg of the artificial pheromone. Estimation of P. truncatus densities in a maize store at the beginning of the storage period (based on laboratory data) revealed that small initial numbers of P. truncatus, possibly attracted by a single male, sufficed to initiate high infestation rates later in the storage season.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1002919705200
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Flight initiation in Prostephanus truncatus: influence of population density and aggregation pheromone (1997)
    Springer
    Entomologia experimentalis et applicata 85 (1997), S. 237-245 
    Details
    ISSN: 1570-7458
    Keywords: Prostephanus truncatus ; Bostrichidae ; dispersal ; pheromone ; crowding effect
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract The influence of population density and aggregation pheromone were investigated as possible flight initiating factors for Prostephanus truncatus (Horn) (Col.: Bostrichidae). Maize grains (175 g in glass jars) were infested with 20, 50, 150 or 300 beetles, all of which were removed after 2 weeks. Flight initiation of the progeny was observed over a period of 4 weeks, with and without the synthetic aggregation pheromone of P. truncatus. Addition of the synthetic pheromone had no influence on the number of beetles taking off. The number of beetles dispersing increased with growing initial and progeny densities. Dispersal rates (% of total progeny dispersing) rose with declining rate till they reached a maximum at ca. 33%. Of the beetles dispersing, 74% left the cultures between 18.00 and 20.00 hours. Surviving progeny per female decreased with increasing initial density. Sex ratios in the initial cultures and in the F1 were ca. 1:1, whereas a higher proportion of females (67%) was found among the dispersing beetles.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1003147811537
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Trees or stores? The origin of migrating shape Prostephanus truncatus collected in different ecological habitats in southern Benin (1998)
    Springer
    Entomologia experimentalis et applicata 87 (1998), S. 285-294 
    Details
    ISSN: 1570-7458
    Keywords: larger grain borer ; Prostephanus truncatus ; Bostrichidae ; West Africa ; gut-content analysis
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Migrating Prostephanus truncatus (Horn) (Col.: Bostrichidae) were collected weekly with pheromone-baited funnel traps at three different sites in southern Benin for 12 months. One site was located in a primary forest, one in a peri-urban area, and one in a region with intensive agriculture. The sex of the trapped beetles was determined. The gut-content of the specimens was analyzed for remains of lignin and starch, the former indicating recent feeding on woody, the latter on a starchy substrate, such as stored maize or dried cassava. At all locations, the sex ratio of migrating P. truncatus was significantly female-biased, with the greatest proportion of females trapped at the peri-urban site. At the forest site, most beetles had lignin in their guts, while the proportion of beetles containing starch was highest in the peri-urban site. Approximately equal proportions of beetles with either starch and lignin were trapped in the region with intensive agriculture. The results are discussed with regard to the population dynamics of P. truncatus in different habitats and the flight activity of the beetles.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1003245721641
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  • 4
    Electronic Resource
    Electronic Resource
    Prolongation of rat renal allograft survival time by donor pretreatment with 8-methoxypsoralen and longwave ultraviolet irradiation of the graft (PUVA therapy) (1985)
    Springer
    Urological research 13 (1985), S. 95-98 
    Details
    ISSN: 1434-0879
    Keywords: PUVA ; Kidney transplantation ; Rat ; UV irradiation
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Pretreatment of the kidney donor with 8-methoxypsoralen (8-MOP) and ex vivo longwave ultraviolet irradiation (UVA) of the kidney prolonged the subsequent survival on allogeneic recipients. The efficacy of this treatment seems to be dependent on the time and dose of UVA irradiation rather than on the dose of 8-MOP. In conclusion, PUVA treatment is effective in reducing the immunogenicity of the rat kidney allograft, although the mechanism remains unclear. These experimental findings are new and preliminary results in clinical human kidney transplantation are favourable.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00261574
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    Paper (German National Licenses)
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  • 5
    Electronic Resource
    Electronic Resource
    Urolithiasis after kidney transplantation-clinical and mineralogical aspects (1980)
    Springer
    Urological research 8 (1980), S. 211-218 
    Details
    ISSN: 1434-0879
    Keywords: Urolithiasis ; Kidney transplantation ; Hyperparathyroidism ; Crystallography ; X-ray diffraction studies
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Urolithiasis is a rare complication following kidney transplantation. Experience with this complication in 6 of 426 transplantations performed from 1968 to 1979 is reviewed. The clinical symptoms are different from the disease in non-transplant patients. Three major predisposing causes for the development of calculi after kidney transplantation were found in our patients — urodynamic disorders following complications of the ureterovesical anastomosis, persistent bacteriuria and renal tubular acidosis and, less importantly, the presence of hypertacemia and hypercalciuria as a result of secondary hyperparathyroidism. Crystal-optical and x-ray-diffraction studies contributed to the interpretation of the constituents and texture of the calculi and of the aetiological factors concerned.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00256996
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    Paper (German National Licenses)
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  • 6
    Electronic Resource
    Electronic Resource
    Photochemical donor pretreatment in clinical kidney transplantation —Preliminary report (1987)
    Springer
    Urological research 15 (1987), S. 211-213 
    Details
    ISSN: 1434-0879
    Keywords: Kidney transplantation ; Donor pretreatment ; PUVA ; Ultraviolet irradiation
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Extended experimental experience with the efficiacy of pretreating the kidney donor and the allograft by means of photochemotherapy (photosensitizer+UVA irradiation=PUVA) was adopted in clinical kidney transplantation. In a preliminary unrandomized study similar patient populations were treated by generally uniform methods. Thirty-three PUVA-pretreated kidneys (group A) were compared with the experience regarding 26 nonpretreated kidney allografts (group B). The number of rejection episodes was significantly lower in the first 3 months in group A (p〈 0.05 vs group B) and fewer grafts failed because of irreversible rejection (2 vs 5). Furthermore, in group A the rate of infectious complications was lower (18% vs 34%). The cumulative allograft survival at 3 months was improved from 65% in group B to 81% in group A and at 12 months from 65% 76%, respectively. These differences were not significant. Therefore, our preliminary clinical experience with a photochemical donor pretreatment is encouraging and further use in a randomized study seems to be necessary.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00262102
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    Paper (German National Licenses)
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