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  • 2000-2004  (8)
  • 1965-1969  (2)
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  • 1
    ISSN: 1365-3083
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: A surface protein antigen (PAc) of Streptococcus mutans, particularly the A-region of the molecule, has been reported to interact with salivary components on the tooth surface. It might be a candidate antigen inducing the production of antibodies against the adherence of S. mutans to the tooth surface. We investigated the effects of monoclonal antibodies (MoAbs) obtained by immunization of synthetic PAc peptides that completely correspond to the amino acid sequence of part of the A-region. These MoAbs recognize several core B-cell epitopes in the sequence. Two (KH5 and SH2) of these antibodies reacted with both S. mutans and Streptococcus sobrinus, but not with Streptococcus sanguis, Streptococcus salivarius, Porphyromonas gingivalis or Lactobacillus casei. They clearly inhibited the real-time adherence of S. mutans to salivary components in a biosensor. KH5, which showed a real-time inhibition (71%), also significantly prevented the recolonization of S. mutans on the tooth surface in rats. These results suggested that the core B-cell epitope (-Y---L--Y----) recognized by KH5 was the essential sequence in the antigenic epitopes of PAc protein recognized specifically by the inhibitory antibody. Therefore, the amino acid residues were found to be important in the initial attachment of S. mutans to the tooth surface. These results provide for the mechanism of PAc molecule in the initial attachment of S. mutans on the tooth surface and more effective designs for the removal of S. mutans and S. sobrinus from the oral cavity.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Science Ltd
    Journal of neuroendocrinology 15 (2003), S. 0 
    ISSN: 1365-2826
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Orexins are endogenous neuropeptides that potently facilitate appetite and food consumption. In the present study, we examined orexin immunoreactivity and prepro-orexin mRNA expression in the lateral hypothalamus by immunohistochemistry and competitive reverse transcription-polymerase chain reaction (RT-PCR) methods in different models of hyperphagia in rats. Hyperphagia was induced by lesions of either the ventromedial hypothalamus (VMHL) or the paraventricular nucleus (PVNL), and we also compared lactating rats to nonlactating controls. Both VMHL and PVNL increased food intake and body weight compared to shams. On day 7 post lesion, serum leptin and insulin concentrations exhibited 3.2- and 2.8-fold increases in VMHL rats, and nonsignificant 1.8- and 1.8-fold increases in PVNL rats; there were significant decreases (48% and 33%) in lactating rats on day 12 postpartum compared to controls, respectively. Serum glucose concentrations were not significantly changed compared to controls in these rats. Quantification by image analysis suggests that VMHL significantly decreased the number and mean staining intensity of orexin-A immunoreactive neurones compared to those in the sham-lesioned group; while PVNL did not change orexin-A immunoreactivity. Competitive RT-PCR analysis showed that VMHL significantly decreased the prepro-orexin mRNA expression compared to those in the sham-lesioned group, and PVNL did not change it. Lactating rats on days 11–12 of lactation had significantly greater number and mean staining intensity of orexin-A immunoreactive neurones, prepro-orexin mRNA expression food intake and body weight than nonlactating postpartum rats. Thus, changes in orexin-A immunoreactivity and prepro-orexin mRNA expression were not consistent between the hyperphagia models. These results suggest that the hyperphagia from VMHL or PVNL and lactating rats differ in their involvement of orexin-A, and the change in circulating leptin and insulin concentrations may be involved in the change of orexin-A immunoreactivity in these rats.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Science Ltd
    Journal of neuroendocrinology 16 (2004), S. 0 
    ISSN: 1365-2826
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Melanin-concentrating hormone (MCH) is believed to be an important orexigenic peptide mainly localized in the lateral hypothalamic area. Its involvement in the hyperphagia induced by hypothalamic lesions and lactation remains unclear. In this study, we investigated MCH immunoreactivity in the hypothalamus using immunohistochemistry and MCH concentration in the peripheral circulation using an enzyme immunoassay in rats with a lesion in the ventromedial hypothalamus or the paraventricular nucleus, and in lactating rats. Bilateral lesions of the ventromedial or paraventricular nuclei were performed using an electrolytic method. Quantification of immunoreactivity by image analysis revealed that the number and mean staining intensity of MCH-immunoreactive neurones in the lateral hypothalamic area and the zona incerta were significantly decreased by both types of lesions compared to sham controls, whereas circulating MCH concentration was not significantly different on day 7 postlesion. By contrast, in lactating rats on days 11–12 postpartum, the expression of MCH in the lateral hypothalamic area and the zona incerta was significantly increased compared to nonlactating controls. Circulating MCH concentration was not changed in lactating rats. These results suggest that hyperphagia induced by lactation, but not hypothalamic lesion, might be induced by excessive expression of MCH in the lateral hypothalamic area and the zona incerta.
    Type of Medium: Electronic Resource
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  • 4
    ISSN: 1365-2826
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: This study examined the effect of suckling on nicotinamide adenine dinucleotide phosphate diaphorase (NADPH-d, a histochemical marker for nitric oxide synthase, NOS) reactivity and neuronal NOS mRNA expression in the paraventricular (PVN) and supraoptic (SON) nuclei of lactating rats. Freely nursing (non-separated) dams and those separated from pups for 12 h and then reunited for 0, 15, 30, 60, 90, 120 and 180 min were used for the study. Dams separated from pups and sacrificed at time zero (without reunion) showed a significant decrease in NADPH-d staining and NADPH-d positive cells as well as in the NOS mRNA expression in the PVN and SON compared to that observed in non-separated dams. Reunion with pups and restoration of suckling significantly increased NADPH-d reactivity after 15, 30, 60 min, but not after 90, 120 and 180 min compared to non-reunited pups-deprived dams. A pattern of NADPH-d reactivity and neuronal NOS mRNA expression indistinguishable from that observed during free lactation was reinstated shortly (15 min) after the restoration of suckling stimulus, suggesting that the NADPH-d reactivity in lactation depends on the presence of the suckling stimulus. These results show that suckling stimulus may play a modulatory role in the regulation of NOS reactivity in the magnocellular neurones of the hypothalamic PVN and SON during lactation.
    Type of Medium: Electronic Resource
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  • 5
    ISSN: 1439-0523
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Viral diseases of sweet potato are very prevalent and often seriously damaging to the plants. In particular, the severe strain of the sweet potato feathery mottle virus (SPFMV-S) causes ‘obizyo-sohi’ disease in Japan. In order to confer viral resistance against SPFMV using current biotechnology, a transgenic sweet potato has been produced, introducing hygromycin-resistant (hpt) and SPFMV-S coat protein (CP) genes, which have shown a significant resistance to SPFMV-S. In the breeding programme, it is important to confirm that the viral resistance conferred in T0 plants can be inherited by their progeny. In the present study, progeny were obtained from crosses between the transgenic T0 and a non-transgenic variety of sweet potato. The results showed that the CP gene was inherited by the next generation and that the stability of viral resistance was also confirmed. Thus, this production system for the virus-resistant transgenic sweet potato is useful in practical breeding.
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Science Ltd
    Clinical and experimental dermatology 26 (2001), S. 0 
    ISSN: 1365-2230
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Type of Medium: Electronic Resource
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  • 7
    ISSN: 1432-5195
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Résumé  L’armature MC a été mis au point pour le traitement de patients souffrant d’une arthrite rhumatoide (AR) qui se présente avec une protrusion acétabulaire, en tant que bague de renforcement métallique acétabulaire d’une cavité articulaire à revêtement poreux sans ciment Harris-Galante (HG). Depuis 1991, cette nouvelle bague de support avec greffon osseux autogène à paroi médiale a été utilisé pour traiter la protrusion acétabulaire de patients ayant une AR. Nous avons réexaminé 15 hanches de 13 patients AR sur une moyenne de 53,6 mois, s’étalant sur une plage de 24 à 84 mois après l’opération. Les résultats cliniques de l’arthroplastie totale de la hanche utilisant cette bague de support furent satistaisants pour tous les cas. Aucun cas ne montra de radiotransparence entre le greffon osseux et la paroi acétabulaire. Tous les greffons osseux se présentaient comme étant tomographiquement réunis, et la protrusion n’a pas progressé
    Notes: Abstract  The MC cup supporter is an acetabular reinforcement ring for the Harris-Galante (HG) cementless porous-coated socket. This supporting ring has been used with autogenous bone graft since 1991 in the management of protrusio acetabuli in patients with rheumatoid arthritis (RA). We have reviewed 15 hips in 13 patients at an average of 53.6 months (range 24–84 months) after operation. The clinical results of total hip arthroplasty (THA) in protrusio acetabuli using this ring were satisfactory. All grafts appeared to have united radiologically with no radiolucent lines between graft and acetabulum.
    Type of Medium: Electronic Resource
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  • 8
    Electronic Resource
    Electronic Resource
    Springer
    European journal of clinical pharmacology 1 (1968), S. 30-37 
    ISSN: 1432-1041
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Medicine
    Description / Table of Contents: Zusammenfassung Die Kreislaufwirkungen einer neuen blutdrucksenkenden Substanz, Dichlorphenylaminoimidazolin (DCAI) wurden an 17 normotonen und 17 hypertonen Versuchspersonen untersucht. Die folgenden Parameter wurden gemessen: Arterieller Blutdruck, peripherer Venendruck, Muskeldurchblutung, Hautdurchblutung, Herzfrequenz, Gesamt-Blutvolumen und die Ausscheidung von Brenzkatechinaminen und Vanillin-Mandelsäure. DCAI wurde in Einzeldosen von 0.1–0.3 mg intravenös bzw. bei länger dauernden Experimenten in Tagesdosen von 0.3–1.5 mg per os verabreicht. — DCAI bewirkte intravenös gegeben, einen durchschnittlich 2 min dauernden Anstieg sowohl des systolischen als auch des diastolischen arteriellen Blutdrucks, dem ein langanhaltender Druckabfall folgte. Die Herzfrequenz nahm während beider Phasen gering ab. Der periphere Venendruck änderte sich nicht signifikant. Die Muskeldurchblutung blieb unverändert oder nahm vorübergehen gering zu. Unmittelbar nach der Injektion von DCAI fiel die Hautdurchblutung bis auf 50–60% der Ruhedurchblutung ab, anschließend stieg she allmählich wieder in Richtung auf die Ausgangswerte an, ohne these jedoch während der Beobachtungszeit zu erreichen. — Im Verlauf einer wirksamen oralen Behandlung mit DCAI bei 9 Hypertonikern änderte sich das Gesamt-Blutvolumen nicht signifikant. — Die Ausscheidung von Katecholaminen und Vanillin-Mandelsäure wurde durch einmalige intravenöse Gabe von 0.15 mg DCAI nicht sicher beeinflußt. — Die durch Adrenalin, Noradrenalin und Angiotensin ausgelösten Reaktionen des Blutdxucks, des Venendrucks sowie der Muskel — und Hautdurchblutung wurden durch DCAI qualitativ nicht verändert. Die Intensität der durch allo 3 Substanzen ausgelösten Durchblutungsabnahme in der Haut war infolge des durch DCAI stark verminderten Ausgangswertes herabgesetzt. — Tolazoline antagonisierte die Wirkungen von DCAI auf den arteriellen Blutdruck und die Hautdurchblutung. Es kommt klinisch als Antidot in Betracht. — Die Resultate wurden im Zusammenhang mit den hämodynamischen Veränderungen während der ersten (pressorischen) und zweiten (depressorischen) Phase der DCAI-Wirkung diskutiert.
    Notes: Summary The circulatory effects of a new antihypertensive agent, dichlorophenylamino-imidazoline (DCAI), were investigated in 17 normotensive and 17 hypertensive subjects. The following parameters were measured: Arterial pressure (AP), peripheral venous pressure (PVP), muscle blood flow (MBF), skin blood flow (SBF), heart rate (HR), total blood volume (TBV), and the excretion of catecholamines (CA) and vanillinmandelic acid (VMA). DCAI was administered in single doses of 0.15–0.3 mg intravenously or, in long-term experiments, in daily doses of 0.3–1.5 mg per os. — DCAI i. v. produced a short (mean: 2 min) increase in both systolic and diastolic AP, followed by a long lasting decrease. HR was slightly reduced during both phases. PVP was not significantly altered. MBF was unchanged or transiently slightly increased. Immediately after injection of DCAI, SBF sharply decreased to 50–60% of the resting flow; subsequently it rose gradually towards control values without reaching them during the time of observation. —Effective oral treatment with DCAI in 5 hypertensive patients produced no change in TBV. — The urinary excretion of CA and VMA was not significantly altered by a single i. v. dose of 0.15 mg DCAI. — The responses of AP, PVP, MBF and SBF to adrenaline, noradrenaline and angiotensin were not altered qualitatively by pro-treatment with single i. v. doses of DCAI. The duration of the depressor effect of adrenaline is, however, slightly but significantly prolonged. The decrease in SBF elicited by all 3 substances is diminished following DCAI, most probably as a consequence of the reduction in the control values caused by DCAI. Tolazoline antagonized the effects of DCAI on AP and SBF. It may be useful clinically as an antidote. — The results are discussed with regard to the hemodynamic changes occurring during the first (pressor) and second (depressor) phase of action of DCAI.
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  • 9
    ISSN: 1432-069X
    Keywords: Key words Type VII collagen ; Pruriginosa ; Anchoring fibril ; Basement membrane
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Dystrophic epidermolysis bullosa (DEB), caused by mutations in the gene encoding type VII collagen (COL7A1), is known to show heterogeneous clinical phenotypes. Certain correlations between the nature or position of COL7A1 mutations and the resultant DEB phenotypes have been suggested, although such relationships may be more complex than initially thought. The purpose of the present study was to clarify the molecular basis of two different subtypes of dominant DEB (DDEB), EB pruriginosa and classical type. Interestingly, we found that both cases were caused by a missense glycine substitution mutation by different amino acids in the same codon of COL7A1 (G2028R and G2028A). These results further support the notion that different glycine substitution mutations in the same codon can lead to heterogeneous clinical phenotypes of DDEB, EB pruriginosa and classical type.
    Type of Medium: Electronic Resource
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  • 10
    Electronic Resource
    Electronic Resource
    Springer
    Graefe's archive for clinical and experimental ophthalmology 179 (1969), S. 32-40 
    ISSN: 1435-702X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung Zur Bestimmung von Citronensäure in Linsen eignet sich ein colorimetrisches Verfahren, dessen Arbeitsweise angegeben wird. In Kälberlinsen liegt mit 133,3 μg/g der Citronensäuregehalt um ca. 36% höher als in Rinderlinsen (98,78 μg/g). Die höchsten Konzentrationen finden sich in Linsenäquator, vorderer und hinterer Schale der Kälberlinse. Die entsprechenden Teile der Rinderlinse zeigen einen etwa 20% niedrigeren Citronensäuregehalt. Im Kern der Rinderlinse ist ein stärkerer Abfall zu verzeichnen. Das Konzentrationsgefälle von Linsenrinde zum Kern ist in den Rinderlinsen (58%) stärker ausgeprägt als in Kälberlinsen (37%). — Unter in vitro-Beeinflussung des Linsenstoffwechsels durch KCN kommt es zu einer Zunahme an Citronensäure. Daraus läßt sich abschätzen, daß mindestens etwa 4% des Gesamtglucoseumsatzes über den Citronensäurecyclus abgebaut werden.
    Notes: Summary A colorimetric procedure, which is described, is well suitable for the determination of citric acid in lenses. The content of citric acid is 133.3 μg/g in calf lenses, that is 36% more than in bovine lenses, which contain 98.78 μg/g. The highest concentration is found in the equator and in the posterior and anterior parts of calf lenses. The corresponding parts of the bovine lens are showing a 20% lower amount of citric acid. A considerable decrease was found in the nucleus of the lens. The gradient of concentration from the cortex to the nucleus is in bovine lenses (58%) greater than in calf lenses (37%). Citric acid content is increased by influencing lens metabolism in vitro with KCN. Hereby it may be calculated, that at least 4% of total carbohydrate degradation are catabolized via the citric acid cycle.
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