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A Münscher

Publications and source records attributed to A Münscher.

6 recordsLinked to original sources
PubMed2006

Antimicrobial defence mechanisms of the human parotid duct.

The parotid duct transports saliva from the gland into the oral cavity. However, its immune response properties, along with the secretion and moistening principles of the duct, have not yet been fully investigated. These properties may play an important role in protecting the parotid gland from infection and also prevent development of sialodocholithiasis, as the parotid duct -- in contrast to the submandibular salivary duct -- is often free of duct concrements. Up to now, only the parotid gland has been investigated, without regard to its duct. The present study analyses the structures of the parotid duct in their relations to antimicrobial defence mechanisms and rheological properties. Investigations were performed on 23 parotid ducts using histological, histochemical and immunohistochemical methods. Epithelial and goblet cells of the parotid duct synthesize a complex mucous layer that covers the epithelium. The viscosity is influenced by secreted mucins and TFF peptides. This layer contains carbohydrates including N-acetyl-glucosamine, N-acetyl-galactosamine, galactose, mannose, fucose and sialic acids. The lamina propria contains granulocytes, T lymphocytes and macrophages. IgA, produced by plasma cells in the subepithelial layer, is frequently integrated in the secretory product. Synthesized mucins, TFF peptides, carbohydrates and immunoglobulins form a complex layer that can be expected to prohibit infection and enables salivary flow. Our study demonstrates that the steady secretion of the parotid gland, together with the ductal cellular and biochemical immune protection system, is likely to thwart ascending infections in the parotid duct and gland.

Aged↗
PubMed2005

[Assessment of motivational changes in tinnitus sufferers. A study of the transtheoretical model].

OBJECTIVES: Cognitive-behavioural treatment of chronic tinnitus needs active cooperation and motivation in patients. The transtheoretical model (TTM) defines the behavioural change using six different stages of change (SoC). In this study, we examined SoC in patients with tinnitus via a new self-rating instrument. SAMPLE AND METHODS: An item-pool, consisting of 48 questions, was administered to 125 tinnitus sufferers in a cross-sectional study. In addition to data on tinnitus history, the tinnitus strain (THI, German: TB-12), scores of anxiety and depression (HADS-D), and life quality (SF-12) were assessed. RESULTS: Four SoC could be identified empirically: (1) precontemplation, (2) contemplation/preparation, (3) action/maintenance, and (4) termination. Associations of the SoC with socio-demographic and tinnitus related data, as well as with the instruments applied, conformed with the theory. CONCLUSIONS: The results confirm the transfer of SoC theory to patients with tinnitus.

Female↗
PubMed2004

[The monthly interesting case - case no. 63].

Angiosarcomas are rare, aggressive tumors of vascular origin. They occur most often in areas of long term sun exposed skin in the elderly, in long standing lymphoedema or after radiation therapy. The prognosis is poor, radical surgery required, in addition radiation or chemo-therapy are considered to be therapeutical options. We report on a male patient, 70 years old with a slightly bleeding blueish tumor encompassing the complete nose. This patient treated with several antibiotics while continuous growth led to the described course. After 4 months a biopsy was taken revealing an angiosarcoma of the nose. Subsequently the patient was referred to our department and due to staging results a surgical therapy (ablatio nasi) followed. The final histological diagnosis was a low grade angiosarcoma of the cutaneous and subcutaneous tissue of the nose without infiltration of bone or cartilage, confirmed by immunohistological staining. Angiosarcomas of the head and neck region are extremely rare. Especially only few cases of nasal angiosarcoma infiltrating the complete nose are described in literature. Prognosis, therapy and differential diagnosis have to be discussed.

Aged↗
PubMed2001

Pituitary hormone mRNA in null cell adenomas and oncocytomas by in situ hybridization comparison with immunohistochemical and clinical data.

Null cell adenomas and oncocytomas are clinically inactive adenomas of the pituitary gland. They do not show any significant hormone content detectable by immunohistochemistry. This study aimed at demonstrating mRNAs for all main pituitary hormones in 32 null cell adenomas and 31 oncocytomas by non-isotopic in situ hybridization using digoxigenin-labeled oligonucleotide probes. The results were compared with immunohistochemical and clinical data. Immunohistochemistry (ABC method) was done with monoclonal antibodies against PRL, GH, FSH, LH, TSH, ACTH, alpha-subunit, and Ki-67 (mib-1). The signals for hormone production were detected in both adenoma types in a range from 42% for GH in oncocytomas to 78% for beta-FSH in null cell adenomas. However, these signals are apparently not effective on hormone production, as was shown by almost negative immunostaining. Owing to the simultaneous detection of at least two mRNAs in 78% of null cell adenomas and in 94% of oncocytomas, we assume that both tumor types originate from pluripotential precursor cells that are capable of producing various hormones. According to our data, it is unlikely that the signals influence the clinical behavior.

Adenoma↗
PubMed2001

GH-, PRL-, POMC-, beta-TSH-, beta-LH-, beta-FSH-mRNA in gonadotroph adenomas of the pituitary by in situ hybridization in comparison with immunostaining and clinical data.

In situ hybridization (ISH) enables the visualization of specific mRNA for pituitary hormones. Our collection consists of 40 surgically removed pituitary adenomas that were classified as follicle stimulating hormone/luteinizing hormone (FSH/LH) cell adenomas by structure and by immunostaining (IH) for all pituitary hormones. All forty adenomas were regarded as clinically inactive. The aim of our study was to examine nonfunctioning adenomas by ISH for demonstration of mRNAs for all pituitary hormones. The results were compared with proliferation markers, invasiveness and clinical data. ISH detected signals for all pituitary hormones at a range of 30% for prolactin (PRL) to 85% for proopiomelanocortin (POMC). mRNA for beta-FSH was detected in 70% and beta-LH mRNA in 43% of adenomas. Thirty-three percent of adenomas revealed negative mRNA detection for beta-LH but positive hormone content. The majority of adenomas (75%) expressed more than two mRNAs simultaneously, mostly the combination of POMC mRNA together with beta-FSH mRNA and one to four others. Comparison with clinical data showed no significant differences except for one adenoma with a high Ki-67 index (> 2.1% positive nuclei). This adenoma showed very high signals for PRL and beta-TSH mRNA.

Adenoma↗