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  • Articles: DFG German National Licenses  (5)
  • pheromone  (3)
  • Dermatitis  (2)
  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Surgical and radiologic anatomy 20 (1998), S. 367-371 
    ISSN: 1279-8517
    Keywords: Hepatic Artery ; Liver Cirrhosis ; Collateral Circulation ; Dermatitis ; Embolization ; Therapeutic
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Résumé L'artère du ligament falciforme hépatique (ALFH) fut étudiée par des angiographies et des dissections. D'après les résultats, le mécanisme d'un rash cutané après chimio-embolisation est discuté. Un total de 340 patients présentant une cirrhose hépatique ayant eu une chimio-embolisation de l'artère hépatique pour un carcinome hépato-cellulaire fut revu en fonction de l'incidence angiographie de l'ALFH, les variations d'origine de l'ALFH, et l'incidence d'un rash cutané. L'ALFH fut objectivée angiographiquement chez 26 (7,6%) des 340 patients. Deux ALFH furent objectivées chez un patient. L'origine des ALFH était située sur l'artère hépatique moyenne (A4) dans 16 cas, la branche supérieure de l'artère hépatique moyenne dans 3 cas, la branche inférieure de l'artère hépatique moyenne dans 2 cas, la branche inférieure de l'artère hépatique gauche (A3) dans 3 cas, et la confluence A3 et A4 dans 3 cas. Aucun patient ne développa un rash cutané après chimio-embolisation. Deux cadavres furent disséqués pour étudier les anastomoses entre l'ALFH et les artères sous-cutanées. Deux types d'anastomoses entre l'ALFH et des artères sous-cutanées furent individualisés directement et par l'intermédiaire de l'artère xiphoïde et de l'artère thoracique interne. Celles-ci étaient respectivement situées à la partie inférieure et à la partie supérieure du ligament falciforme. La distribution de l'agent chimiothérapique par ces anastomoses est vraisemblablement la cause des rash cutanés après chimio-embolisation. Dans le cas d'une embolisation prophylactique de la portion proximale de l'ALFH par utilisation d'un coil métallique le rash cutané pourrait être prévenu.
    Notes: Summary The hepatic falciform ligament artery (HFLA) was evaluated by angiography and also by dissections. Based on the findings, the mechanism of the post-chemoembolization skin rash was studied. A total of 340 liver cirrhosis patients who underwent hepatic artery chemoembolization for hepatocellular carcinoma were reviewed in terms of the angiographic incidence of the HFLA, variations in its origin, and the incidence of skin rash. The HFLA was demonstrated in 26 (7.6%) of the 340 patients on angiography. Two HFLAs were observed in one patient. The origin was the middle hepatic artery (A4) in 16 cases, the superior branch of the middle hepatic artery in three, the inferior branch of the middle hepatic artery in two, the inferior branch of the left hepatic artery (A3) in three, and the confluence of A3 and A4 in three cases. There were no patients who developed post-chemoembolization skin rash. Two cadavers were dissected to investigate the anastomosis between the HFLA and the subcutaneous artery. Two different anastomoses were found: (1) direct and (2) via the ensiform branch of the internal thoracic artery. These were located at the lower and upper part of the falciform ligament, respectively. The distribution of a chemotherapeutic agent through these anastomoses is the likely cause of post-chemoembolization skin rash. If prophylactic embolization of the proximal portion of the HFLA using a metallic coil is performed, the skin rash will be prevented.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Surgical and radiologic anatomy 20 (1999), S. 367-371 
    ISSN: 1279-8517
    Keywords: Hepatic Artery ; Liver Cirrhosis ; Collateral Circulation ; Dermatitis ; Embolization ; Therapeutic
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract The hepatic falciform ligament artery (HFLA) was evaluated by angiography and also by dissections. Based on the findings, the mechanism of the post-chemoembolization skin rash was studied. A total of 340 liver cirrhosis patients who underwent hepatic artery chemoembolization for hepatocellular carcinoma were reviewed in terms of the angiographic incidence of the HFLA, variations in its origin, and the incidence of skin rash. The HFLA was demonstrated in 26 (7.6%) of the 340 patients on angiography. Two HFLAs were observed in one patient. The origin was the middle hepatic artery (A4) in 16 cases, the superior branch of the middle hepatic artery in three, the inferior branch of the middle hepatic artery in two, the inferior branch of the left hepatic artery (A3) in three, and the confluence of A3 and A4 in three cases. There were no patients who developed post-chemoembolization skin rash. Two cadavers were dissected to investigate the anastomosis between the HFLA and the subcutaneous artery. Two different anastomoses were found: (1) direct and (2) via the ensiform branch of the internal thoracic artery. These were located at the lower and upper part of the falciform ligament, respectively. The distribution of a chemotherapeutic agent through these anastomoses is the likely cause of post-chemoembolization skin rash. If prophylactic embolization of the proximal portion of the HFLA using a metallic coil is performed, the skin rash will be prevented.
    Type of Medium: Electronic Resource
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  • 3
    ISSN: 1573-1561
    Keywords: Mosquito ; Culex pipiens fatigans ; Diptera ; Culicidae ; oviposition ; attractant ; pheromone ; chiral chromatography ; acetoxyhexadecanolide
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract 6-Acetoxy-5-hexadecanolide (Ia) in the oviposition attractant pheromone released from egg apical droplets of the mosquitoCulex pipiens fatigans Wied. is shown to be the (−)-(5R,6S)- enantiomer. Identification was by chromatography of the 6-trifluoroacetoxy derivatives of the natural pheromone and of the synthetic (−)-(5R,6S)- (Ib) and (+)-(5S,6R)- (IIb) enantiomers on a capillary column having a chiral stationary phase comprising a derivative of (1S,3S)-chrysanthemic acid. The synthetic (−)-(5R,6S)- enantiomer (Ia) attracted oviposition of four fold more mosquito egg rafts than the control (P 〈 0.01) whereas for the (5S,6R)- enantiomer (IIa) there was no statistically significant oviposition attraction.
    Type of Medium: Electronic Resource
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  • 4
    ISSN: 1573-1561
    Keywords: Tsetse fly ; sex stimulant ; pheromone ; hydrocarbon ; methylalkanes ; gas chromatography ; Diptera ; biting fly
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract Study of lipids from male and female laboratory-reared flies led to the demonstration of a potent contact sex stimulant in extracts and cuticular hydrocarbons of the female tsetse fly Glossina tachinoides (Westwood) against conspecific males. Thin-layer and column chromatography indicated that extracts contained hydrocarbons and saponifiable lipids. Biological activity was found in the alkanes from females, including prominent branched-chain alkanes that were detected by gas chromatography (GC). The alkanes were separated and collected by preparative gas chromatography (GC), and only the 37-carbon region showed biological activity. GC–mass spectrometry showed the major peak contained a mixture of isomeric 11,23-, 13,25- plus a minor amount of 11,21-dimethylheptatriacontane. Two racemic isomers were synthesized, and bioassays showed that the greatest activity was possessed by the 11,23- isomer with somewhat less activity in 13,25-dimethyl heptatria-contane. Dose–response data showed ED50 at 5 μg per decoy with solvent-washed males, nonspecific females, or corks as decoys. These alkanes released sexual activity in males that comprised most of the behaviors released by a female fly of the same species.
    Type of Medium: Electronic Resource
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  • 5
    ISSN: 1573-1561
    Keywords: Enantiomers ; bark beetle ; pheromone ; Dendroctonus frontalis ; Coleoptera ; Scolytidae ; southern pine beetle ; electrophysiology ; olfaction
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract In laboratory and field bioassays, the response ofDendroctonus frontalis was significantly greater to the mixture of (1S, 5R)-(−)-frontalin andalpha-pinene than to (1R,5S)-(+)-frontalin andalpfa-pinene. Electro-physiological studies revealed that antennal olfactory receptor cells were significantly more responsive to (1S, 5R)-(−)-frontalin than to (1R, 5S)-(+)-frontalin. Both enantiomers stimulated the same olfactory cells which suggests that each cell possesses at least two types of enantiomer-specific acceptors.
    Type of Medium: Electronic Resource
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