Publications by authors named "Vollmer H"

Since 2003, the number of facilities reporting abortions to the Federal Statistical Office has decreased by 46% from 2050 to 1092 in 2021. In the last 5 years, the decrease slowed down. The media report that there is a shortage of physicians willing to perform abortions in some regions of Germany.

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Leading organisations recommend follow-up of acute kidney injury (AKI) survivors, as these patients are at risk of long-term complications and increased mortality. Information transfer between specialties and from tertiary to primary care is essential to ensure timely and appropriate follow-up. Our aim was to examine the association between completeness of discharge documentation and subsequent follow-up of AKI survivors who received kidney replacement therapy (KRT) in the Intensive Care Unit (ICU).

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Introduction: Irrespective of the type of psychotherapy used, the abstinence-oriented treatment of drug abusers is less successful than that for alcohol abusers. If, on the other hand, the two groups are parallelized in such a way that the patients are identical with respect to the five characteristics of gender, age, schooling, work situation and partner situation, then there is no difference between the success rates of the drug and alcohol abusers. The aim of this study is to determine whether this result can be replicated in another therapeutic institution.

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Endoscopic bougienage seems to be the most effective therapy for dysphagia in esophageal intramural pseudodiverticulosis (EIPD), but nothing is known about the long-term success of this treatment option. This report presents long-term results for 21 of 22 patients with EIPD who were treated with bougienage. A total of 103 sessions of bougienage up to a diameter of 18 mm were performed, without major complications and with 100 % clinical success.

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The frequency and clinical significance of heterotopic gastric mucosa in the upper esophagus is not sufficiently known. Heartburn or dysphagia could result from mucin and/or acid production in this area. We undertook a prospective study in 300 patients with special attention of the endoscopist to this area.

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Objective: The objective of this study is to investigate the influence of substance abuse and addiction as comorbid disorders on the treatment results of patients of a psychosomatic unit one year after their release.

Methods: In a prospective, non-randomized field study patients were asked by mail one year after finishing their treatment as part of a quality management endeavour.

Results: After one year patients with comorbid substance addiction did not improve in psychological tests whereas those with comorbid substance abuse or without any of these comorbidities showed significant improvements.

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Campylobacter causes bacterial diarrhoea in man and is a common foodborne pathogen, that has been associated mainly with poultry carcasses and processed poultry products as well as with drinking water. Genotyping of Campylobacter spp. from poultry was done in order to prove if predominant stable strains in the food chain are present.

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[reaction: see text] In an effort to expand the scope of natural product in vitro glycorandomization (IVG), the substrate specificity of NovM was investigated. A test of four aglycon analogues and over 40 nucleotide sugars revealed NovM has a surprisingly stringent substrate specificity and provided only three new "unnatural" natural products. On the basis of the determined substrate specificity, an alternative to the sugar nucleotide biosynthetic dogma and a cautionary note for the general applicability of IVG are introduced.

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Purpose: The lipofuscin fluorophore A2E is known to be an initiator of blue-light-induced apoptosis in retinal pigment epithelial cells (RPE). The purpose of this study was to evaluate the role of oxidative mechanisms in mediating the cellular damage.

Methods: Human RPE (ARPE-19) cells that had accumulated A2E were exposed to blue light in the presence and absence of oxygen, and nonviable cells were quantified.

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We have examined questions related to the biosynthesis of A2E, a fluorophore that accumulates in retinal pigment epithelial cells with aging and in some retinal disorders. The use of in vitro preparations revealed that detectable levels of A2-PE, the A2E precursor, are formed within photoreceptor outer segments following light-induced release of endogenous all-trans-retinal. Moreover, experiments in vivo demonstrated that the formation of A2-PE in photoreceptor outer segment membrane was augmented by exposing rats to bright light.

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