8 results on '"Lüdders DW"'
Search Results
2. Chronische entzündliche Darmerkrankungen und Schwangerschaft – Welchen Risiken und Komplikationen sind zu beachten?
- Author
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Lüdders, DW, primary, Hornemann, A, additional, Thill, M, additional, Weichert, J, additional, Diedrich, K, additional, and Bohlmann, MK, additional
- Published
- 2008
- Full Text
- View/download PDF
3. Gestagene- Allheilmittel zur Prophylaxe und Therapie von Schwangerschaftspathologien?
- Author
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Bohlmann, MK, primary, Lüdders, DW, additional, Baumann, K, additional, Marx, TE, additional, Diedrich, K, additional, and Hornemann, A, additional
- Published
- 2008
- Full Text
- View/download PDF
4. Anxiety in caregiving partners of breast cancer patients.
- Author
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Hoellen F, Wagner JF, Lüdders DW, Rody A, and Banz-Jansen C
- Subjects
- Adolescent, Adult, Aged, Body Image, Cohort Studies, Educational Status, Fear, Female, Humans, Male, Middle Aged, Pain, Postoperative, Anxiety epidemiology, Breast Neoplasms psychology, Caregivers psychology, Spouses psychology
- Abstract
Purpose: The aim of the present study was to determine the levels of anxiety of partners of breast cancer patients and to evaluate the differences of anxiety levels between patients and partners according to the stage of treatment, age and education level., Methods: 57 spouses or domestic partners of breast cancer patients and 148 breast cancer patients participated in this prospective cohort study and filled out the questionnaires including the Spielberger state-trait-anxiety-inventory, as well as questions based on stress-triggering procedures during breast cancer diagnosis and therapy., Results: State anxiety levels of partners were highest in partners who accompanied their patients when presenting for examinations and operations and tumorboard decisions (Mean State-Scores 52, 45 and 46.5). Anxiety scores were lowest at the stage of ongoing chemotherapy or follow-up. The 25% quartile of partners with the highest state anxiety levels had a significantly higher educational level (p = 0.023). Young men aged 18-35 years showed the highest levels of both trait and state anxiety. Partners showed significantly higher levels of anxiety than the patients for anesthetic complications (p < 0.001), e.g., fear of not waking up from general anesthetic and postoperative pain (p < 0.001). Patients showed significantly higher levels of anxiety for hairloss (p < 0.001), weight gain during chemotherapy (p < 0.001) and postoperative scars (p = 0.027)., Conclusion: Breast cancer patients are much more concerned about body image issues than their male partners. As these body image-associated concerns often arise from the fear of loosing attraction to their partner, these fears might be reduced by speaking about them openly. Partners are mostly concerned about surgery and anesthetic-related complications. Therefore, preoperative medical information to the partner is mandatory. Partners of breast cancer patients should be included in psycho-oncological support and medical briefings. Probably high anxiety levels of both partners and patients should be taken into account (due to younger age, lower educational level and procedures causing distress). These partners and patients should receive extra careful (clarification) counselling and (treatment support such as a psycho-oncologist) involvement of a psyco-oncologist.
- Published
- 2019
- Full Text
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5. Severe Maternal Pre- and Postpartum Intra-Abdominal Bleeding due to Deciduosis.
- Author
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Lüdders DW, Henke RP, Saba M, Raddatz L, Soliman A, and Malik E
- Abstract
The term "deciduosis" is used to describe the severe pregnancy-associated occurrence of ectopic decidua with a usually asymptomatic course. We report on two cases of massive maternal intra-abdominal bleeding due to such symptomatic changes. The complications arose at different time points for the two cases: prepartum (26th week of pregnancy) or, respectively, - reported here for the first time - seven days postpartum. As well as differential diagnostic aspects we describe the management of the disease and its possible effects on subsequent pregnancies.
- Published
- 2015
- Full Text
- View/download PDF
6. Obesity decreases the chance to deliver spontaneously.
- Author
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Beyer DA, Amari F, Lüdders DW, Diedrich K, and Weichert J
- Subjects
- Adult, Body Mass Index, Female, Humans, Pregnancy, Retrospective Studies, Cesarean Section statistics & numerical data, Obesity complications, Obstetric Labor Complications etiology
- Abstract
Purpose: To evaluate the impact of maternal obesity on labour, intrapartual assessment and delivery., Methods: Retrospective cohort analysis of n = 11,681 deliveries supervised between 01 January 2000 and 31 December 2009. Results were analysed dividing the patients into two main groups according to their body mass index (BMI): group 1, control: BMI 18-24.9 and group 2 BMI, test >25. Subgroups were built: (0) BMI 25-29.9, (I) BMI 30-34.9, (II) BMI 35-39.9, (III) BMI >40. Exclusion criteria were defined as: delivery <37 + 0 weeks p.m., multiple pregnancy, comorbidity other than GDM, abnormal presentation, BMI <18.5, and incomplete data. The main outcome parameter was defined as secondary caesarean delivery rate and mode of delivery., Results: N = 8,379 patients met the inclusion criteria and were divided in two groups: 1, n = 4,464 patients and 2, n = 3,915. Basic maternal characteristics including foetal vital parameters were equal in all groups. GDM occurred more frequently in obese patients (P < 0.001). For the main outcome parameter a significant decrease in the rate of spontaneous delivery between control/test groups (72-66%, P < 0.001) and control/I-III groups (72 vs. 50%, P < 0.001) could be observed. The rate of secondary c-section increased significantly according to a higher BMI (>40: OR 2.5, 95% CI 1.84-3.61, χ (2) P < 0.001). The groups showed no difference in the rate of injuries during delivery though foetal birth weight increased significantly with a higher BMI (3,412-3,681 g; P < 0.001)., Conclusion: Obesity decreases the chance to deliver spontaneously. Moreover, the obese patient suffers from a significantly longer trial of labour (7.9 vs. 9.5 h) and an elevated risk of surgical delivery.
- Published
- 2011
- Full Text
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7. Quercetin-induced induction of the NO/cGMP pathway depends on Ca2+-activated K+ channel-induced hyperpolarization-mediated Ca2+-entry into cultured human endothelial cells.
- Author
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Kuhlmann CR, Schaefer CA, Kosok C, Abdallah Y, Walther S, Lüdders DW, Neumann T, Tillmanns H, Schäfer C, Piper HM, and Erdogan A
- Subjects
- Cell Division drug effects, Cyclic GMP biosynthesis, Dose-Response Relationship, Drug, Endothelial Cells drug effects, Endothelial Cells metabolism, Endothelial Cells physiology, Humans, Membrane Potentials, Nitric Oxide biosynthesis, Potassium Channels, Calcium-Activated physiology, Quercetin administration & dosage, Quercetin therapeutic use, Calcium metabolism, Phytotherapy, Plants, Medicinal, Potassium Channels, Calcium-Activated drug effects, Quercetin pharmacology
- Abstract
Quercetin is one of the dietary-derived flavonoids that are held responsible for the beneficial effects of red wine drinking in coronary artery disease known as the "French paradox". We examined whether quercetin modulates endothelial function by influencing Ca2+-activated K+ channels with large conductance (BK(Ca)) in cultured human endothelial cells. Membrane potential and intracellular Ca2+ concentrations of cultured human endothelial cells derived from umbilical cord veins (HUVEC) were measured using the fluorescence dyes DiBAC, and FURA-2, respectively. NO production was examined using a cGMP radioimmunoassay. HUVEC proliferation was analyzed by cell counts and thymidine incorporation. A dose-dependent hyperpolarization of HUVEC was recorded when quercetin was added (5-100 micromol/L). The maximum effect (50 micromol/L) was significantly reduced by the addition of the highly selective BK(Ca) inhibitor iberiotoxin (100 nmol/L), but not by blockers of other Ca2+-activated K+ channels (n = 30; p < 0.05). This BK(Ca)-induced hyperpolarization caused a transmembrane Ca2+ influx, because the quercetin-induced increase of intracellular Ca2+ was blocked by iberiotoxin, or by applying 2-aminoethoxydiphenylborate (100 micromol/L)--an inhibitor of capacitative Ca2+ entry (n = 30; p < 0.05). Quercetin-induced cGMP levels were significantly reduced by the eNOS-inhibitor l-NMMA (300 micromol/L), and by iberiotoxin (n = 10; p < 0.05). Endothelial proliferation was significantly reduced by 56 % when cells were incubated with quercetin (n = 12; p < 0.05). This effect was due to the increased NO production, because it was reversed when the cells were treated with a combination of quercetin and l-NMMA. In conclusion quercetin improves endothelial dysfunction by increasing NO synthesis involving BK(Ca)-dependent membrane hyperpolarization-induced capacitative Ca 2+ entry. Increased NO production is responsible for the quercetin-dependent inhibition of endothelial proliferation.
- Published
- 2005
- Full Text
- View/download PDF
8. Dose-dependent activation of Ca2+-activated K+ channels by ethanol contributes to improved endothelial cell functions.
- Author
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Kuhlmann CR, Li F, Lüdders DW, Schaefer CA, Most AK, Backenköhler U, Neumann T, Tillmanns H, Waldecker B, Erdogan A, and Wiecha J
- Subjects
- Cell Proliferation drug effects, Cells, Cultured, Dose-Response Relationship, Drug, Humans, Nitric Oxide physiology, Endothelium, Vascular drug effects, Endothelium, Vascular physiology, Ethanol pharmacology, Potassium Channels, Calcium-Activated physiology
- Abstract
Background: Regular moderate alcohol (EtOH) intake seems to protect against both coronary artery disease and ischemic stroke, whereas the risk increases with heavy EtOH consumption. Effects of EtOH on endothelial cell function may be relevant to these disparate effects. Potassium channels play an important role in the regulation of endothelial cell functions. Therefore, we investigated whether Ca-activated K channels (BKCa) are modulated by EtOH. Furthermore, we examined whether EtOH-induced changes of endothelial nitric oxide (NO) formation and cell proliferation are due to BKCa activation., Methods: The patch-clamp technique was used to investigate BKCa activity in cultured human umbilical vein endothelial cells (HUVEC). NO formation was analyzed by using the fluorescence dye 4,5-diaminofluorescein. Endothelial proliferation was examined by using cell counts and measuring [H]thymidine incorporation., Results: EtOH dose-dependently (10-150 mmol/liter) modulated BKCa-activity, with the highest increase of open-state probability at a concentration of 50 mmol/liter (n = 13; p < 0.05). Inside-out recordings revealed that this effect was due to direct BKCa activation, whereas open-state probability was not changed in cell-attached recordings after pertussis toxin preincubation. EtOH (10 and 50 mmol/liter) caused a significant increase of NO levels, which was blocked by the highly selective BKCa inhibitor iberiotoxin (100 nmol/l; n = 30; p < 0.05). Higher concentrations of EtOH (100 and 150 mmol/liter) significantly reduced NO synthesis (n = 30; p < 0.05). Both methods revealed a significant increase of HUVEC proliferation, which was inhibited by iberiotoxin (n = 30; p < 0.05). At a concentration of 150 mmol/liter, EtOH caused a significant reduction of endothelial proliferation., Conclusions: EtOH directly activates BKCa in HUVEC, leading to an increase of endothelial proliferation and production of NO. These results indicate a possible beneficial effect of low-dose EtOH on endothelial function, whereas higher concentrations must be considered as harmful.
- Published
- 2004
- Full Text
- View/download PDF
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