Kooperativer Bibliotheksverbund

Berlin Brandenburg


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  • 1
    Language: English
    In: Neuroimmunomodulation, October 2003, Vol.11(1), pp.36-40
    Description: Objectives: The peripheral administration of granulocyte macrophage colony-stimulating factor (GM-CSF), widely used for the treatment of cytopenias, is often associated with neurological effects [Lieschke et al., N Engl J Med 1992;327:28–34]. This cytokine has recently been reported to affect neurotransmitter metabolism in the nervous system [Bianchi, Neuroreport 1997;8:3587–3590]. To further investigate the neuromodulatory effect of GM-CSF we studied the influence of GM-CSF on the efferent electric activity in the splenic nerve and the integral neuronal activity in medullary gigantocellular reticular formation (MGRF) in rats. Methods: Anaesthetized (sodium thiopental 70 mg/kg, i.p.) Wistar rats were injected subcutaneously with 1 µg/kg of hr GM-CSF. Efferent electric activity in the splenic nerve and integral electric activity in MGRF were analyzed. The effectiveness of the applied dose of GM-CSF was verified by determining the elevation of the white blood cell count in peripheral blood 60 min after injection. Results: We found that GM-CSF increases efferent electric activity in the splenic nerve and decreases that of MGRF as is evident by the frequency of electric discharges. The latency of both effects was 5–15 min. Conclusions: This data support the view that GM-CSF exerts a neuromodulatory effect and may provide a new link of neuroimmune communication.
    Keywords: Original Paper ; Granulocyte Macrophage Colony-Stimulating Factor ; Reticular Formation ; Splenic Nerve ; Electric Activity ; Medicine ; Anatomy & Physiology
    ISSN: 1021-7401
    E-ISSN: 1423-0216
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  • 2
    Language: English
    In: International Journal of Pediatric Otorhinolaryngology, 2009, Vol.73(2), pp.249-256
    Description: Respiratory papillomatosis associated with human papilloma virus (HPV) infection is the most common benign laryngeal neoplasm. The age of patients at disease onset, HPV type, number of surgeries are well known prognostic factors of the disease course. The correlation between dendritic cell (DC) density in tumor tissue and clinical prognosis was established. The aim of our study was to estimate the density of DC in laryngeal papillomas associated with HPV types 6/11 infection and to evaluate the relationship between the number of DC and the disease severity. Our study included 40 randomly selected biopsy specimens from patients with HPV-positive laryngeal papillomatosis aged from 1.7 to 20 year. DC were immunohistochemically labelled with anti-CD1a antibodies and anti-CD83 antibodies. The density of DC was analysed in epithelial layer and lamina propria. In the epithelial layer of papillomas the number of CD1a+ and CD83+ DC was 86.2 (47.5–119.9) cells/mm and 2.6 (0.6–7.9) cells/mm , respectively. In lamina propria – 15.3 (5.1–27.9) and 16.0 (6.7–33.2) cells/mm . For subgroups of patients with high number of operations (more than 3), early disease onset (children under 3 years of age) and lingering duration of disease (more than 1 year) we detected an increase of CD83+ DC in the epithelial layer. However, our data did not demonstrate a statistically significant difference in CD1a+ DC count neither in the epithelium nor in the lamina propria. Probably, the increase of CD83+ DC density in epithelial layer of patients with severe course of disease can be an evidence of impaired migration of matured DC.
    Keywords: Recurrent Respiratory Papillomatosis ; Dendritic Cells ; Cd1a ; Cd83 ; Medicine
    ISSN: 0165-5876
    E-ISSN: 1872-8464
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  • 3
    Language: English
    In: Biochemical and Biophysical Research Communications, 2005, Vol.326(2), pp.395-401
    Description: In a model of human neuroblastoma (NB) cell lines persistently infected with human cytomegalovirus (HCMV) we previously showed that persistent HCMV infection is associated with an increased malignant phenotype, enhanced drug resistance, and invasive properties. To gain insights into the mechanisms of increased malignancy we analyzed the global changes in cellular gene expression induced by persistent HCMV infection of human neuroblastoma cells by use of high-density oligonucleotide microarrays (HG-U133A, Affymetrix) and RT-PCR. Comparing the gene expression of different NB cell lines with persistently infected cell sub-lines revealed 11 host cell genes regulated in a similar manner throughout all infected samples. Nine of these 11 genes may contribute to the previously observed changes in malignant phenotype of persistently HCMV infected NB cells by influencing invasive growth, apoptosis, angiogenesis, and proliferation. Thus, this work provides the basis for further functional studies.
    Keywords: Neuroblastoma ; Human Cytomegalovirus ; Microarray Analysis ; Oncomodulation ; Biology ; Chemistry ; Anatomy & Physiology
    ISSN: 0006-291X
    E-ISSN: 1090-2104
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