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Schulze A, Busse M. Sports Diet and Oral Health in Athletes: A Comprehensive Review. Medicina (Kaunas) 2024; 60:319. [PMID: 38399605 PMCID: PMC10890155 DOI: 10.3390/medicina60020319] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/18/2024] [Revised: 02/05/2024] [Accepted: 02/12/2024] [Indexed: 02/25/2024]
Abstract
Food and fluid supply is fundamental for optimal athletic performance but can also be a risk factor for caries, dental erosion, and periodontal diseases, which in turn can impair athletic performance. Many studies have reported a high prevalence of oral diseases in elite athletes, notably dental caries 20-84%, dental erosion 42-59%, gingivitis 58-77%, and periodontal disease 15-41%, caused by frequent consumption of sugars/carbohydrates, polyunsaturated fats, or deficient protein intake. There are three possible major reasons for poor oral health in athletes which are addressed in this review: oxidative stress, sports diet, and oral hygiene. This update particularly summarizes potential sports nutritional effects on athletes' dental health. Overall, sports diet appropriately applied to deliver benefits for performance associated with oral hygiene requirements is necessary to ensure athletes' health. The overall aim is to help athletes, dentists, and nutritionists understand the tangled connections between sports diet, oral health, and oral healthcare to develop mitigation strategies to reduce the risk of dental diseases due to nutrition.
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Affiliation(s)
- Antina Schulze
- General Outpatient Clinic of Sports Medicine, University of Leipzig, 04103 Leipzig, Germany;
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Darmochwal S, Bischoff C, Thieme R, Gockel I, Tegtbur U, Hillemanns P, Schulze A, Voss J, Falz R, Busse M. Impact of home-based training and nutritional behavior on body composition and metabolic markers in cancer patients: data from the CRBP-TS study. Front Nutr 2023; 10:1152218. [PMID: 37794972 PMCID: PMC10546323 DOI: 10.3389/fnut.2023.1152218] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2023] [Accepted: 08/31/2023] [Indexed: 10/06/2023] Open
Abstract
Introduction Obesity and physical inactivity are known to affect cancer's development and prognosis. In this context, physical aerobic and resistance training as well as a Mediterranean nutrition have been proven to have many positive health effects. The aim of this study was therefore to investigate the effect of home-based training on body composition and certain metabolic laboratory parameters. Methods Patients with breast, colorectal and prostate cancer who underwent curative surgery at stages T1N0M0-T3N3M0 were eligible for this trial and randomized to an intervention and control group. In the intervention group the patients carried out online-based strength-endurance home training during the 6-month study period. Body composition was assessed via bioelectrical impedance analysis (baseline, 3 months and 6 months). Metabolic blood parameters were also analyzed and nutrition behavior determined using the Mediterranean Diet Adherence Screener (MEDAS). Results The intervention group's fat mass decreased while their lean body mass increased (time effect p = 0.001 and p = 0.001, respectively). We found no interaction effect in body weight (p = 0.19), fat mass [p = 0.06, 6-months estimates -0.9 (95% CI -1.8 to -0.1)] and lean body mass (p = 0.92). Blood samples also failed to show a statistically significant interaction effect between time × group for HbA1c% (p = 0.64), Insulin (p = 0.33), Adiponectin (p = 0.87), Leptin (p = 0.52) and Triglycerides (p = 0.43). Only Adiponectin revealed significance in the time effect (p < 0.001) and Leptin in the group effect (p = 0.03). Dietary behavior during the study period was similar in patients in the intervention and control groups (interaction p = 0.81; group p = 0.09 and time p = 0.03). Discussion Individualized online-based home training in postoperative cancer patients revealed only minor changes, with no group differences in body composition or metabolic laboratory parameters, which were predominantly in the reference range at baseline. More studies investigating effects of online-based home training on body composition and nutrition behavior are needed. Trial registration https://drks.de/search/en/trial/DRKS00020499, DRKS-ID: DRKS00020499.
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Affiliation(s)
- Sophia Darmochwal
- Institute of Sport Medicine and Prevention, University Leipzig, Leipzig, Germany
| | - Christian Bischoff
- Institute of Sport Medicine and Prevention, University Leipzig, Leipzig, Germany
| | - René Thieme
- Department of Visceral, Transplant, Thoracic and Vascular Surgery, University Hospital Leipzig, Leipzig, Germany
| | - Ines Gockel
- Department of Visceral, Transplant, Thoracic and Vascular Surgery, University Hospital Leipzig, Leipzig, Germany
| | - Uwe Tegtbur
- Department of Rehabilitation and Sports Medicine, Hannover Medical School, Hannover, Germany
| | - Peter Hillemanns
- Department of Gynecology and Obstetrics, Hannover Medical School, Hannover, Germany
| | - Antina Schulze
- Institute of Sport Medicine and Prevention, University Leipzig, Leipzig, Germany
| | - Johannes Voss
- Institute of Sport Medicine and Prevention, University Leipzig, Leipzig, Germany
| | - Roberto Falz
- Institute of Sport Medicine and Prevention, University Leipzig, Leipzig, Germany
| | - Martin Busse
- Institute of Sport Medicine and Prevention, University Leipzig, Leipzig, Germany
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Falz R, Bischoff C, Thieme R, Tegtbur U, Hillemanns P, Stolzenburg JU, Aktas B, Bork U, Weitz J, Lässing J, Leps C, Voß J, Lordick F, Schulze A, Gockel I, Busse M. Effect of home-based online training and activity feedback on oxygen uptake in patients after surgical cancer therapy: a randomized controlled trial. BMC Med 2023; 21:293. [PMID: 37553660 PMCID: PMC10408062 DOI: 10.1186/s12916-023-03010-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/02/2023] [Accepted: 07/27/2023] [Indexed: 08/10/2023] Open
Abstract
BACKGROUND Exercise training is beneficial in enhancing physical function and quality of life in cancer patients. Its comprehensive implementation remains challenging, and underlying cardiopulmonary adaptations are poorly investigated. This randomized controlled trial examines the implementation and effects of home-based online training on cardiopulmonary variables and physical activity. METHODS Of screened post-surgical patients with breast, prostate, or colorectal cancer, 148 were randomly assigned (1:1) to an intervention (2 × 30 min/week of strength-endurance training using video presentations) and a control group. All patients received activity feedback during the 6-month intervention period. Primary endpoint was change in oxygen uptake after 6 months. Secondary endpoints included changes in cardiac output, rate pressure product, quality of life (EORTC QoL-C30), C-reactive protein, and activity behavior. RESULTS One hundred twenty-two patients (62 intervention and 60 control group) completed the study period. Change in oxygen uptake between intervention and control patients was 1.8 vs. 0.66 ml/kg/min (estimated difference after 6 months: 1.24; 95% CI 0.23 to 2.55; p = 0.017). Rate pressure product was reduced in IG (estimated difference after 6 months: - 1079; 95% CI - 2157 to - 1; p = 0.05). Physical activity per week was not different in IG and CG. There were no significant interaction effects in body composition, cardiac output, C-reactive protein, or quality of life. CONCLUSIONS Home-based online training among post-surgery cancer patients revealed an increase of oxygen uptake and a decrease of myocardial workload during exercise. The implementation of area-wide home-based training and activity feedback as an integral component in cancer care and studies investigating long-term effects are needed. TRIAL REGISTRATION DRKS-ID: DRKS00020499 ; Registered 17 March 2020.
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Affiliation(s)
- Roberto Falz
- Institute of Sport Medicine and Prevention, University Leipzig, Rosa-Luxemburg-Str. 30, Leipzig, 04103, Germany.
| | - Christian Bischoff
- Institute of Sport Medicine and Prevention, University Leipzig, Rosa-Luxemburg-Str. 30, Leipzig, 04103, Germany
| | - René Thieme
- Department of Visceral, Transplant, Thoracic and Vascular Surgery, University Hospital Leipzig, Leipzig, Germany
| | - Uwe Tegtbur
- Institute of Sport Medicine, Hannover Medical School, Hannover, Germany
| | - Peter Hillemanns
- Department of Gynecology and Obstetrics, Hannover Medical School, Hannover, Germany
| | | | - Bahriye Aktas
- Department of Gynaecology, University Hospital Leipzig, Leipzig, Germany
| | - Ulrich Bork
- Department of Visceral-, Thoracic and Vascular Surgery, University Hospital Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany
- National Center for Tumor Diseases (NCT), Partner Site Dresden, Dresden, Germany
| | - Jürgen Weitz
- Department of Visceral-, Thoracic and Vascular Surgery, University Hospital Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany
- National Center for Tumor Diseases (NCT), Partner Site Dresden, Dresden, Germany
| | - Johannes Lässing
- Institute of Exercise Science & Sports Medicine, Martin Luther University Halle-Wittenberg, Halle, Germany
| | - Christian Leps
- Institute of Sport Medicine and Prevention, University Leipzig, Rosa-Luxemburg-Str. 30, Leipzig, 04103, Germany
| | - Johannes Voß
- Institute of Sport Medicine and Prevention, University Leipzig, Rosa-Luxemburg-Str. 30, Leipzig, 04103, Germany
| | - Florian Lordick
- Department of Oncology, Gastroenterology, Hepatology, Pulmonology and Infectious Diseases, University Hospital Leipzig, Leipzig, Germany
- University Cancer Center Leipzig, University Hospital Leipzig, Leipzig, Germany
| | - Antina Schulze
- Institute of Sport Medicine and Prevention, University Leipzig, Rosa-Luxemburg-Str. 30, Leipzig, 04103, Germany
| | - Ines Gockel
- Department of Visceral, Transplant, Thoracic and Vascular Surgery, University Hospital Leipzig, Leipzig, Germany
| | - Martin Busse
- Institute of Sport Medicine and Prevention, University Leipzig, Rosa-Luxemburg-Str. 30, Leipzig, 04103, Germany
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Schulze A, Tran D, Daum MTJ, Kisilenko A, Maier-Hein L, Speidel S, Distler M, Weitz J, Müller-Stich BP, Bodenstedt S, Wagner M. Ensuring privacy protection in the era of big laparoscopic video data: development and validation of an inside outside discrimination algorithm (IODA). Surg Endosc 2023:10.1007/s00464-023-10078-x. [PMID: 37145173 PMCID: PMC10338566 DOI: 10.1007/s00464-023-10078-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2023] [Accepted: 04/10/2023] [Indexed: 05/06/2023]
Abstract
BACKGROUND Laparoscopic videos are increasingly being used for surgical artificial intelligence (AI) and big data analysis. The purpose of this study was to ensure data privacy in video recordings of laparoscopic surgery by censoring extraabdominal parts. An inside-outside-discrimination algorithm (IODA) was developed to ensure privacy protection while maximizing the remaining video data. METHODS IODAs neural network architecture was based on a pretrained AlexNet augmented with a long-short-term-memory. The data set for algorithm training and testing contained a total of 100 laparoscopic surgery videos of 23 different operations with a total video length of 207 h (124 min ± 100 min per video) resulting in 18,507,217 frames (185,965 ± 149,718 frames per video). Each video frame was tagged either as abdominal cavity, trocar, operation site, outside for cleaning, or translucent trocar. For algorithm testing, a stratified fivefold cross-validation was used. RESULTS The distribution of annotated classes were abdominal cavity 81.39%, trocar 1.39%, outside operation site 16.07%, outside for cleaning 1.08%, and translucent trocar 0.07%. Algorithm training on binary or all five classes showed similar excellent results for classifying outside frames with a mean F1-score of 0.96 ± 0.01 and 0.97 ± 0.01, sensitivity of 0.97 ± 0.02 and 0.0.97 ± 0.01, and a false positive rate of 0.99 ± 0.01 and 0.99 ± 0.01, respectively. CONCLUSION IODA is able to discriminate between inside and outside with a high certainty. In particular, only a few outside frames are misclassified as inside and therefore at risk for privacy breach. The anonymized videos can be used for multi-centric development of surgical AI, quality management or educational purposes. In contrast to expensive commercial solutions, IODA is made open source and can be improved by the scientific community.
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Affiliation(s)
- A Schulze
- Department for General, Visceral and Transplant Surgery, Heidelberg University Hospital, Im Neuenheimer Feld 420, 69120, Heidelberg, Germany
- National Center for Tumor Diseases, Heidelberg, Germany
| | - D Tran
- Department for General, Visceral and Transplant Surgery, Heidelberg University Hospital, Im Neuenheimer Feld 420, 69120, Heidelberg, Germany
- National Center for Tumor Diseases, Heidelberg, Germany
| | - M T J Daum
- Department for General, Visceral and Transplant Surgery, Heidelberg University Hospital, Im Neuenheimer Feld 420, 69120, Heidelberg, Germany
- National Center for Tumor Diseases, Heidelberg, Germany
| | - A Kisilenko
- Department for General, Visceral and Transplant Surgery, Heidelberg University Hospital, Im Neuenheimer Feld 420, 69120, Heidelberg, Germany
- National Center for Tumor Diseases, Heidelberg, Germany
| | - L Maier-Hein
- Division of Intelligent Medical Systems, German Cancer Research Center (Dkfz), Heidelberg, Germany
| | - S Speidel
- Department for Translational Surgical Oncology, National Center for Tumor Diseases, Partner Site Dresden, Dresden, Germany
- Center for the Tactile Internet With Human in the Loop (CeTI), Technische Universität Dresden, Dresden, Germany
| | - M Distler
- Department of Visceral, Thoracic and Vascular Surgery, Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany
| | - J Weitz
- Department of Visceral, Thoracic and Vascular Surgery, Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany
| | - B P Müller-Stich
- Clarunis, University Center for Gastrointestinal and Liver Disease, Basel, Switzerland
| | - S Bodenstedt
- Department for Translational Surgical Oncology, National Center for Tumor Diseases, Partner Site Dresden, Dresden, Germany
- Center for the Tactile Internet With Human in the Loop (CeTI), Technische Universität Dresden, Dresden, Germany
| | - M Wagner
- Department for General, Visceral and Transplant Surgery, Heidelberg University Hospital, Im Neuenheimer Feld 420, 69120, Heidelberg, Germany.
- National Center for Tumor Diseases, Heidelberg, Germany.
- Center for the Tactile Internet With Human in the Loop (CeTI), Technische Universität Dresden, Dresden, Germany.
- Department of Visceral, Thoracic and Vascular Surgery, Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany.
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Schulze A, Busse M. Long-term training improves clinical signs of periodontal disease in type 2 diabetic patients: a pilot trial. J Sports Med Phys Fitness 2023; 63:478-484. [PMID: 36321814 DOI: 10.23736/s0022-4707.22.14197-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/03/2023]
Abstract
BACKGROUND Systemic inflammation is related to diabetes mellitus. Periodontal disease may be considered a local manifestation of systemic inflammation in association with diabetes mellitus. Physical activity may have a positive effect on inflammatory diseases. We investigated the effects of exercise training on periodontal inflammation in diabetic patients. METHODS Out of 69 diabetic patients with periodontitis, 40 subjects participated in a recreational training, while 29 subjects performed no training. All underwent a periodontal examination before and after 6.14±1.24 months and completed a dental hygiene questionnaire. RESULTS In the long-term training group the following parameters decreased: hemoglobin A1c from 6.7±1.0% to 6.3±0.7% (P<0.007), papillary bleeding score 3 by 60% (P<0.0003), and the mean of all probing pocket depths 4 - 6 mm by 40% (P<0.0001). No significant weight changes and no improvements in oral health behavior were observed in either of the groups. No correlation between hemoglobin A1c or weight and periodontal parameters was found. CONCLUSIONS A six-months recreational training was independently related to improved clinical signs of periodontal disease in diabetic subjects.
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Affiliation(s)
- Antina Schulze
- Department of Sports Dentistry, Institute of Sports Medicine, University of Leipzig, Leipzig, Germany -
| | - Martin Busse
- General Outpatient Clinic of Sports Medicine, University of Leipzig, Leipzig, Germany
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Schulte C, Mueller C, Escobar JD, Tong T, Lackner K, Schulze A, Blankenberg S, Salomaa V, Wild P, Zeller T. VEGF beta is a candidate biomarker for cardiovascular risk stratification. Eur Heart J 2022. [DOI: 10.1093/eurheartj/ehac544.1362] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Background
The blood-based transcriptome changes in relation to body weight but longitudinal data on specific transcripts are rare. Monocytes play a crucial role in the development of atherosclerosis and coronary artery disease. Monitoring monocytic gene expression patterns could aid to identify biomarkers for improved cardiovascular risk stratification. BMI and diabetes mellitus (T2DM) are associated with coronary artery disease (CAD). There are mRNAs associated with the development of atherosclerosis and CAD, which can be detected in circulating cells. The exact pathways and direct targets have not been explored.
Objective
To apply transcriptome screening and validation analysis to identify novel biomarker candidates associated with longitudinal changes of BMI as cardiovascular risk factors and test association with clinical endpoints.
Methods
Transcriptome-wide monocytic gene expression changes were screened in relation to changes in BMI over a time period of 5 years in 1,092 participants of the Gutenberg Health Study with available transcriptomics data at baseline investigation and at 5-years follow-up. Functional enrichment of BMI-related genes (FDR <0.01) was tested based on pathway databases and selected gene sets. Serum VEGFB levels were quantified and validated in serum from n=1,895 individuals from an independent cohort study (FinRisk). In-vitro, THP1 cells were stimulated with recombinant VEGFB.
Results
143 transcripts showed a significant association with change in BMI over 5 years. Decreased VEGFB mRNA levels strongly associated with increased BMI (p=2.8x10–9). Lower levels of VEGFB mRNA were associated with increased mortality (HRperSD=0.757, 95% CI: 0.647–0.885, p=0.0005) following adjustment for age and sex and incident diabetes (p=0.01). Circulating VEGFB levels inversely correlated with VEGFB mRNA (r=−0.2, p=0.0024) and positively correlated with an increase in BMI (beta=0.226, p=8.4x10–6), type 2 diabetes mellitus risk (HRperSD=1.279, 95% CI: 1.148–1.425, p=7.8x10–6) and all-cause mortality (HRperSD=1.184, 95% CI: 1.045–1.342, p=0.008). Further exploration in n=1,895 individuals from FinRisk revealed an association of increased VEGFB levels with increased risk for heart failure (HRperSD=1.373, 95% CI: 1.210–1.560, p=1.0x10–6) and coronary artery disease (HR=1.018, 95% CI: 1.003–1.034, p=0.019), even after adjustment for BMI. In THP-1 culture, stimulation with VEGFB resulted in downregulation of VEGFB mRNA levels.
Conclusion
Decreased monocytic gene expression of VEGFB is related to increased BMI, increased risk of T2DM and all-cause mortality. Vice versa,circulating VEGFB levels associates positively with BMI, diabetes, mortality as well as heart failure and coronary heart disease. We hypothesize that monocytes regulate VEGFB expression by a negative feed-back mechanism based. Circulating VEGFB is a potential novel biomarker candidate for weight-related diabetes risk and cardiovascular risk evaluation.
Funding Acknowledgement
Type of funding sources: Public grant(s) – National budget only. Main funding source(s): DZHK
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Affiliation(s)
- C Schulte
- University Heart & Vascular Center Hamburg , Hamburg , Germany
| | - C Mueller
- University Heart & Vascular Center Hamburg , Hamburg , Germany
| | - J D Escobar
- The University Medical Center Hamburg-Eppendorf, University Center of Cardiovascular Science, University Heart and vascular Center , Hamburg , Germany
| | - T Tong
- The University Medical Center Hamburg-Eppendorf, University Center of Cardiovascular Science, University Heart and vascular Center , Hamburg , Germany
| | - K Lackner
- Johannes Gutenberg University Mainz (JGU), University Medical Center , Mainz , Germany
| | - A Schulze
- Johannes Gutenberg University Mainz (JGU), University Medical Center , Mainz , Germany
| | - S Blankenberg
- University Heart & Vascular Center Hamburg , Hamburg , Germany
| | - V Salomaa
- National Institute for Health and Welfare (THL), Department of Public Health Solutions , Helsinki , Finland
| | - P Wild
- Center for Thrombosis and Hemostasis , Mainz , Germany
| | - T Zeller
- The University Medical Center Hamburg-Eppendorf, University Center of Cardiovascular Science, University Heart and vascular Center , Hamburg , Germany
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Lässing J, Pökel C, Lingener L, Falz R, Kwast S, Schulze A, Busse M. The Influence of Customized Mouthguards on the Muscular Activity of the Masticatory Muscles at Maximum Bite and Motor Performance During Static and Dynamic Exercises. Sports Med Open 2021; 7:64. [PMID: 34477985 PMCID: PMC8417176 DOI: 10.1186/s40798-021-00354-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/29/2021] [Accepted: 07/27/2021] [Indexed: 11/10/2022]
Abstract
Background Some studies have suggested that a mouthguard is a performance-enhancing device due to a remote voluntary contraction. The extent to which a mouthguard can induce this phenomenon, e.g., by potentially increasing biting, has not been clarified. This study’s aim was to investigate the muscular activity of the maxillary and peripheral musculature and motor performance during a rest and exercise test. Methods Our study comprised 12 active, male, professional young handball players (age 18.83 ± 0.39 years). Their performance, electromyographic (EMG) muscle activity (Σ), and lateral deviation (Δ) of the masticatory and peripheral musculature were measured during rest in a maximum bite force measurement, one-legged stand, a kettlebell swing exercise and a jump test while wearing a customized mouthguard (CMG) or not wearing one (Co). Results Maximum bite force measurements did not differ significantly in their mean values of muscle activity (Σ) for the masseter and temporalis muscles (Co 647.6 ± 212.8 µV vs. CMG 724.3 ± 257.1 µV p = 0.08) (Co 457.2 ± 135.5 µV vs. CMG 426.6 ± 169.3 µV p = 0.38) with versus without CMG. We found no differences in the mean activation values during a one-legged stand, the kettlebell swing, and jump test (Σ) in any of the muscles tested. Lateral deviations (Δ) wearing a CMG were significantly less in the erector spinae during the kettlebell swing (Co 5.33 ± 3.4 µV vs. CMG 2.53 ± 1.8 µV p = 0.01) and countermovement jump (Co 37.90 ± 30.6 µV vs. CMG 17.83 ± 22.3 µV p = 0.03) compared to the performance without a CMG. Jump height, rotation moment, and balance were unchanged with versus without CMG. Conclusion Our results at rest and during specific motor stress show no differences with or without a CMG. The improved peripheral muscular balance while wearing a CMG indicates improved muscular stabilization.
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Affiliation(s)
- Johannes Lässing
- Institute of Sports Medicine and Prevention, University of Leipzig, Marschnerstr. 29, 04109, Leipzig, Germany.
| | - Christoph Pökel
- Institute of Sports Medicine and Prevention, University of Leipzig, Marschnerstr. 29, 04109, Leipzig, Germany
| | | | - Roberto Falz
- Institute of Sports Medicine and Prevention, University of Leipzig, Marschnerstr. 29, 04109, Leipzig, Germany
| | - Stefan Kwast
- Institute of Sports Medicine and Prevention, University of Leipzig, Marschnerstr. 29, 04109, Leipzig, Germany
| | - Antina Schulze
- Institute of Sports Medicine and Prevention, University of Leipzig, Marschnerstr. 29, 04109, Leipzig, Germany
| | - Martin Busse
- Institute of Sports Medicine and Prevention, University of Leipzig, Marschnerstr. 29, 04109, Leipzig, Germany
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Kalogirou C, Linxweiler J, Schmucker P, Snaebjornsson MT, Schmitz W, Wach S, Krebs M, Hartmann E, Puhr M, Müller A, Spahn M, Seitz AK, Frank T, Marouf H, Büchel G, Eckstein M, Kübler H, Eilers M, Saar M, Junker K, Röhrig F, Kneitz B, Rosenfeldt MT, Schulze A. MiR-205-driven downregulation of cholesterol biosynthesis through SQLE-inhibition identifies therapeutic vulnerability in aggressive prostate cancer. Nat Commun 2021; 12:5066. [PMID: 34417456 PMCID: PMC8379214 DOI: 10.1038/s41467-021-25325-9] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2020] [Accepted: 07/29/2021] [Indexed: 12/19/2022] Open
Abstract
Prostate cancer (PCa) shows strong dependence on the androgen receptor (AR) pathway. Here, we show that squalene epoxidase (SQLE), an enzyme of the cholesterol biosynthesis pathway, is overexpressed in advanced PCa and its expression correlates with poor survival. SQLE expression is controlled by micro-RNA 205 (miR-205), which is significantly downregulated in advanced PCa. Restoration of miR-205 expression or competitive inhibition of SQLE led to inhibition of de novo cholesterol biosynthesis. Furthermore, SQLE was essential for proliferation of AR-positive PCa cell lines, including abiraterone or enzalutamide resistant derivatives, and blocked transactivation of the AR pathway. Inhibition of SQLE with the FDA approved antifungal drug terbinafine also efficiently blocked orthotopic tumour growth in mice. Finally, terbinafine reduced levels of prostate specific antigen (PSA) in three out of four late-stage PCa patients. These results highlight SQLE as a therapeutic target for the treatment of advanced PCa.
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Affiliation(s)
- C Kalogirou
- Department of Biochemistry and Molecular Biology, Theodor-Boveri-Institute, Biocenter, Würzburg, Germany
- Department of Urology and Paediatric Urology, University Hospital Würzburg, Würzburg, Germany
| | - J Linxweiler
- Department of Urology, Saarland University, Homburg/Saar, Germany
| | - P Schmucker
- Department of Urology and Paediatric Urology, University Hospital Würzburg, Würzburg, Germany
| | - M T Snaebjornsson
- German Cancer Research Center, Division of Tumor Metabolism and Microenvironment, Heidelberg, Germany
| | - W Schmitz
- Department of Biochemistry and Molecular Biology, Theodor-Boveri-Institute, Biocenter, Würzburg, Germany
| | - S Wach
- Department of Urology, University Hospital Erlangen, Friedrich-Alexander University of Erlangen-Nuremberg, Erlangen, Germany
| | - M Krebs
- Department of Urology and Paediatric Urology, University Hospital Würzburg, Würzburg, Germany
| | - E Hartmann
- Institute of Pathology, Julius Maximilians University and Comprehensive Cancer Center (CCC) Mainfranken, Würzburg, Germany
| | - M Puhr
- Department of Urology, Medical University of Innsbruck, Innsbruck, Austria
| | - A Müller
- Clinic for Diagnostic and Interventional Radiology, Saarland University, Homburg/Saar, Germany
| | - M Spahn
- Center for Urology, Hirslanden Private Hospital Group, Zurich, Switzerland
| | - A K Seitz
- Department of Urology and Paediatric Urology, University Hospital Würzburg, Würzburg, Germany
| | - T Frank
- Department of Urology and Paediatric Urology, University Hospital Würzburg, Würzburg, Germany
| | - H Marouf
- Department of Biochemistry and Molecular Biology, Theodor-Boveri-Institute, Biocenter, Würzburg, Germany
| | - G Büchel
- Department of Biochemistry and Molecular Biology, Theodor-Boveri-Institute, Biocenter, Würzburg, Germany
- Mildred Scheel Early Career Center, University Hospital Würzburg, Würzburg, Germany
| | - M Eckstein
- Institute of Pathology, University Hospital Erlangen, Friedrich-Alexander University of Erlangen-Nuremberg, Erlangen, Germany
| | - H Kübler
- Department of Urology and Paediatric Urology, University Hospital Würzburg, Würzburg, Germany
| | - M Eilers
- Department of Biochemistry and Molecular Biology, Theodor-Boveri-Institute, Biocenter, Würzburg, Germany
| | - M Saar
- Department of Urology, Saarland University, Homburg/Saar, Germany
| | - K Junker
- Department of Urology, Saarland University, Homburg/Saar, Germany
| | - F Röhrig
- Department of Biochemistry and Molecular Biology, Theodor-Boveri-Institute, Biocenter, Würzburg, Germany
| | - B Kneitz
- Department of Urology and Paediatric Urology, University Hospital Würzburg, Würzburg, Germany
| | - M T Rosenfeldt
- Institute of Pathology, Julius Maximilians University and Comprehensive Cancer Center (CCC) Mainfranken, Würzburg, Germany
| | - A Schulze
- Department of Biochemistry and Molecular Biology, Theodor-Boveri-Institute, Biocenter, Würzburg, Germany.
- German Cancer Research Center, Division of Tumor Metabolism and Microenvironment, Heidelberg, Germany.
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9
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Lässing J, Falz R, Schulze A, Pökel C, Vondran M, Schröter T, Borger MA, Busse M. Decreased exercise capacity in young athletes using self-adapted mouthguards. Eur J Appl Physiol 2021; 121:1881-1888. [PMID: 33713202 PMCID: PMC8192374 DOI: 10.1007/s00421-021-04659-8] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2020] [Accepted: 03/01/2021] [Indexed: 11/03/2022]
Abstract
PURPOSE There is evidence of both the preventive effects and poor acceptance of mouthguards. There are various effects on performance depending on the type of mouthguard model. Hemodynamic responses to wearing a mouthguard have not been described. The aim of this study was to investigate the effects of self-adapted mouthguards with breathing channels (SAMGvent). METHODS In this randomized crossover study, 17 healthy, active subjects (age 25.12 ± 2.19 years) underwent body plethysmography and performed two incremental exertion tests wearing a (SAMGvent) and not wearing (CON) a mouthguard. Blood lactate, spirometrics, and thoracic impedance were measured during these maximum exercise tests. RESULTS The mean values using a SAMGvent revealed significantly greater airway resistance compared to CON (0.53 ± 0.16 kPa·L-1 vs. 0.35 ± 0.10 kPa·L-1, respectively; p = < 0.01). At maximum load, ventilation with SAMGvent was less than CON (118.4 ± 28.17 L min-1 vs. 128.2 ± 32.16 L min-1, respectively; p = < 0.01). At submaximal loads, blood lactate responses with SAMGvent were higher than CON (8.68 ± 2.20 mmol·L-1 vs. 7.89 ± 1.65 mmol·L-1, respectively; p < 0.01). Maximum performance with a SAMGvent was 265.9 ± 59.9 W, and without a mouthguard was 272.9 ± 60.8 W (p < 0.01). Maximum stroke volume was higher using a SAMGvent than without using a mouthguard (138.4 ± 29.9 mL vs. 130.2 ± 21.2 mL, respectively; p < 0.01). CONCLUSION Use of a self-adapted mouthguard led to increased metabolic effort and a significant reduction in ventilation parameters. Unchanged oxygen uptake may be the result of cardiopulmonary compensation and increased breathing efforts, which slightly affects performance. These results and the obvious preventive effects of mouthguards support their use in sports.
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Affiliation(s)
- Johannes Lässing
- Institute of Sport Medicine and Prevention, University of Leipzig, Marschnerstraße 29a, 04109, Leipzig, Germany.
| | - Roberto Falz
- Institute of Sport Medicine and Prevention, University of Leipzig, Marschnerstraße 29a, 04109, Leipzig, Germany
| | - Antina Schulze
- Institute of Sport Medicine and Prevention, University of Leipzig, Marschnerstraße 29a, 04109, Leipzig, Germany
| | - Christoph Pökel
- Institute of Sport Medicine and Prevention, University of Leipzig, Marschnerstraße 29a, 04109, Leipzig, Germany
| | - Maximilian Vondran
- University Department for Cardiac Surgery, Heart Center Leipzig, Leipzig, Germany
- Department of Cardiovascular Surgery, Philipps-University Marburg, University Hospital Gießen and Marburg, Marburg, Germany
| | - Thomas Schröter
- University Department for Cardiac Surgery, Heart Center Leipzig, Leipzig, Germany
| | - Michael A Borger
- University Department for Cardiac Surgery, Heart Center Leipzig, Leipzig, Germany
| | - Martin Busse
- Institute of Sport Medicine and Prevention, University of Leipzig, Marschnerstraße 29a, 04109, Leipzig, Germany
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10
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Schulze A, Schmittenbecher PP. [Apophyseal avulsion in the pelvic region in childhood and adolescence]. Unfallchirurg 2021; 124:519-525. [PMID: 33938973 DOI: 10.1007/s00113-021-01001-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/07/2021] [Indexed: 11/26/2022]
Abstract
BACKGROUND The importance of the apophyseal plates during growth is often underestimated. They act as a muscular insertion and influence the joint mechanics by the load-dependent change in shape. PATHOMECHANISMS An anatomically functional adaptation occurs as protection from overloading. In special kinds of sports with highly dynamic movements, sudden changes of direction and eccentric/concentric muscle activities the resulting stress may exceed the strength of the apophyseal plate. In adolescence this results in a total or partial tearing of the apophysis in the sense of an avulsion injury. In the pelvic region the ischial tuberosity, the anterior superior and inferior iliac spine are mainly affected. DIAGNOSTICS The medical history and clinical diagnostics are supplemented by conventional radiographic imaging. Sectional imaging diagnostics are usually unnecessary. TREATMENT Conservative management by reduced (partial) weight bearing and physiotherapy represents the gold standard in treatment. In cases with a fragment displacement >1.5-2.0 cm and in competitive athletes an open reduction should be considered.
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Affiliation(s)
- A Schulze
- Klinik für Kinderchirurgie, Städtisches Klinikum Karlsruhe, Moltkestr. 90, 76133, Karlsruhe, Deutschland.
| | - P P Schmittenbecher
- Klinik für Kinderchirurgie, Städtisches Klinikum Karlsruhe, Moltkestr. 90, 76133, Karlsruhe, Deutschland
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11
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Lässing J, Schulze A, Falz R, Kwast S, Busse M. A randomized crossover study on the effects of a custom-made mouthguard on cardiopulmonary parameters and cortisol differences in a validated handball specific course. Injury 2021; 52:825-830. [PMID: 33008634 DOI: 10.1016/j.injury.2020.09.054] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/18/2020] [Revised: 09/21/2020] [Accepted: 09/24/2020] [Indexed: 02/02/2023]
Abstract
BACKGROUND The importance of mouthguards for handball players has been proven however, most players are reluctant to use it. The impact on physical capacity is assessed heterogeneously in the literature. This study aimed to investigate the influence of custom-made mouthguards (CMGs) under handball specific stress. METHODS This randomized crossover study used data from 15 youth professional handball players (age 17.0 ±0.5 years, weight 85.1±8.0 kg and height 191.2±6.9 cm) who performed a validated handball specific course and a lung function test. Pulmonary (spirometry), metabolic (blood lactate), and cortisol parameters were observed using a normal custom-made mouthguard without (nCMG) and with respiratory channels (CMGvent) in comparison to no mouthguard (Co). RESULTS In resting spirometry, no differences in the parameter peak flow were observed using the CMGvent (9.57±1.59 l·s-1) and nCMG (9.17±1.03 l·s-1) in comparison to the Co (9.38±1.26 l·s-1). Under maximum stress, there were no differences in ventilation using CMGvent (151.2±15.64 L ·min-1), nCMG (148.6±12.51 l·min-1), and without mouthguard (145.8±14.32 l·min-1). Similar oxygen uptake was observed when using a CMGvent (45.51±4.14 L ·min-1·kg-1), nCMG (45.50±5.06 ml·min-1 ·kg-1), and without CMG (Co 43.90±4.02 mL ·min-1). The parameters of HR (CMGvent 185.2±11.63 bpm vs. Co 179.4±13.24 bpm p=0.46, nCMG 178.2±11.54 bpm vs. Co p=0.97; CMGvent vs. nCMG p=0.08) and in the blood lactate values (CMGvent: 9.66±2.3 mmol·l-1 vs. Co 9.07±2.1 mmol·l-1 p=0.63; nCMG 9.39±2.8 mmol·l-1 vs. Co p=0.87; CMGvent vs. nCMG p=0.91) displayed no differences. The cortisol production under stress showed no differences in the performance with the CMGvent (1.78±3.58 ng/ml), nCMG (0.74±4.52 ng/mL), and in the procedure without mouthguard (0.25. ±5.01 ng/ml). CONCLUSION The results showed that under stress, there were no differences in the cortisol, ventilation, cardiac, and metabolic responses for all three conditions. Finally, the study shows that the use of a custom-made mouthguard does not negatively affect handball specific performance. Due to the preventive aspect of the mouthguard, the use of a custom-made mouthguard in handball is strongly recommended.
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Affiliation(s)
- Johannes Lässing
- Institute of Sport Medicine and Prevention, University of Leipzig, Germany.
| | - Antina Schulze
- Institute of Sport Medicine and Prevention, University of Leipzig, Germany
| | - Roberto Falz
- Institute of Sport Medicine and Prevention, University of Leipzig, Germany
| | - Stefan Kwast
- Institute of Sport Medicine and Prevention, University of Leipzig, Germany
| | - Martin Busse
- Institute of Sport Medicine and Prevention, University of Leipzig, Germany
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12
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Falz R, Thieme R, Tegtbur U, Bischoff C, Leps C, Hillemanns P, Kohlhaw K, Klempnauer J, Lordick F, Stolzenburg JU, Aktas B, Weitz J, Bork U, Wimberger P, Thomas C, Biemann R, Jansen-Winkeln B, Schulze A, Gockel I, Busse M. CRBP-TS - evaluation of a home-based training and health care program for colorectal, breast, and prostate cancer using telemonitoring and self-management: study protocol for a randomized controlled trial. BMC Sports Sci Med Rehabil 2021; 13:15. [PMID: 33622370 PMCID: PMC7901214 DOI: 10.1186/s13102-021-00244-w] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2020] [Accepted: 02/07/2021] [Indexed: 01/19/2023]
Abstract
Background Physical training is recommended in various national and international guidelines for patients with cancer. Observational studies have shown that physical activity leads to reduced recurrence and mortality rates by 20–40% in colorectal, breast, and prostate cancer. Despite existing evidence, a systematic care structure is still lacking. The primary aim of this study is to implement and evaluate an online training platform to strengthen physical performance and patient empowerment after cancer surgery. Methods The evaluation will be conducted as a prospective multicenter randomized controlled trial with three subgroups (colorectal-, breast-, and prostate cancer). Each group will include 100 patients (total 300 patients including dropouts; clinical stages T1–3 and/or N+; M0 after surgery intervention) and the primary endpoint (13% increase in the maximal oxygen consumption during exercise) will be examined. The intervention group will receive a 6-month home-based online training (2–3 times per week strength-endurance training using video presentations), bidirectional activity feedback information, online communication, and online counseling. The control group (usual care) will be advised lifestyle improvement. In-hospital testing will be performed before, during, and after the intervention. In addition to cardiopulmonary capacity, tumor specific diagnostics (liquid biopsy, depression and fatigue assessment, metabolic and endothelial screening) will be applied. Discussion Due to the increasing incidence of cancer, associated with considerable mortality, morbidity and impaired quality of life, there is an imperative requirement for improved cancer care, of which structured physical training may become an integral component. Trial registration DRKS-ID: DRKS00020499; Registered 17 March 2020.
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Affiliation(s)
- Roberto Falz
- Institute of Sport Medicine and Prevention, University Leipzig, Marschnerstraße 29a, 04109, Leipzig, Germany.
| | - René Thieme
- Department of Visceral, Transplant, Thoracic and Vascular Surgery, University Hospital Leipzig, Leipzig, Germany
| | - Uwe Tegtbur
- Institute of Sport Medicine, Hannover Medical School, Hannover, Germany
| | - Christian Bischoff
- Institute of Sport Medicine and Prevention, University Leipzig, Marschnerstraße 29a, 04109, Leipzig, Germany
| | - Christian Leps
- Institute of Sport Medicine and Prevention, University Leipzig, Marschnerstraße 29a, 04109, Leipzig, Germany
| | - Peter Hillemanns
- Department of Gynecology and Obstetrics, Hannover Medical School, Hannover, Germany
| | - Kay Kohlhaw
- Department of Surgery, Sana Hospitals "Leipziger Land", Borna, Germany
| | - Jürgen Klempnauer
- Department of General, Visceral and Transplant Surgery, Hannover Medical School, Hannover, Germany
| | - Florian Lordick
- Department of Oncology, Gastroenterology, Hepatology, Pulmonology and Infectious Diseases, University Hospital Leipzig, Leipzig, Germany.,University Cancer Center Leipzig, University Hospital Leipzig, Leipzig, Germany
| | | | - Bahriye Aktas
- Department of Gynaecology, University Hospital Leipzig, Leipzig, Germany
| | - Jürgen Weitz
- Department of Visceral-, Thoracic and Vascular Surgery, University Hospital Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany.,National Center for Tumor Diseases (NCT), Partner site Dresden, Dresden, Germany
| | - Ulrich Bork
- Department of Visceral-, Thoracic and Vascular Surgery, University Hospital Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany.,National Center for Tumor Diseases (NCT), Partner site Dresden, Dresden, Germany
| | - Pauline Wimberger
- National Center for Tumor Diseases (NCT), Partner site Dresden, Dresden, Germany.,Department of Gynecology and Obstetrics, University Hospital Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany
| | - Christian Thomas
- National Center for Tumor Diseases (NCT), Partner site Dresden, Dresden, Germany.,Department of Urology, University Hospital Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany
| | - Ronald Biemann
- Institute of Laboratory Medicine, Clinical Chemistry and Molecular Diagnostics, University Hospital Leipzig, Leipzig, Germany
| | - Boris Jansen-Winkeln
- Department of Visceral, Transplant, Thoracic and Vascular Surgery, University Hospital Leipzig, Leipzig, Germany
| | - Antina Schulze
- Institute of Sport Medicine and Prevention, University Leipzig, Marschnerstraße 29a, 04109, Leipzig, Germany
| | - Ines Gockel
- Department of Visceral, Transplant, Thoracic and Vascular Surgery, University Hospital Leipzig, Leipzig, Germany
| | - Martin Busse
- Institute of Sport Medicine and Prevention, University Leipzig, Marschnerstraße 29a, 04109, Leipzig, Germany
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13
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Abstract
Schulze, A, Laessing, J, Kwast, S, and Busse, M. Influence of a vented mouthguard on physiological responses in handball. J Strength Cond Res 34(7): 2055-2061, 2020-Mouthguards (MGs) improve sports safety. However, airway obstruction and a resulting decrease in performance are theoretical disadvantages regarding their use. The study aim was to assess possible limitations of a "vented" MG on aerobic performance in handball. The physiological effects were investigated in 14 male professional players in a newly developed handball-specific course. The measured values were oxygen uptake, ventilation, heart rate, and lactate. Similar oxygen uptake (V[Combining Dot Above]O2) values were observed with and without MG use (51.9 ± 6.4 L·min·kg vs. 52.1 ± 10.9 L·min·kg). During maximum load, ventilation was markedly lower with the vented MG (153.1 ± 25 L·min vs. 166.3 ± 20.8 L·min). The endexpiratory concentrations of O2 (17.2 ± 0.5% vs. 17.6 ± 0.8%) and CO2 (4.0 ± 0.5% vs. 3.7 ± 0.6%) were significantly lower and higher, respectively, when using the MG. The inspiration and expiration times with and without the MG were 0.6 ± 0.1 seconds vs. 0.6 ± 0.1 seconds and 0.7 ± 0.2 seconds vs. 0.6 ± 0.2 seconds (all not significant), respectively, indicating that there was no relevant airflow restriction. The maximum load was not significantly affected by the MG. The lower ventilation for given V[Combining Dot Above]O2 values associated with MG use may be an effect of improved biomechanics and lower respiratory drive of the peripheral musculature.
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Affiliation(s)
- Antina Schulze
- Institute of Sports Medicine, General Outpatient Ambulance, Department of Sports Dentistry, University of Leipzig, Germany
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14
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Lässing J, Schulze A, Kwast S, Falz R, Vondran M, Schröter T, Borger M, Busse M. Effects of Custom-made Mouthguards on Cardiopulmonary Exercise Capacity. Int J Sports Med 2020; 42:448-455. [PMID: 33124016 DOI: 10.1055/a-1236-3814] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
The importance of using mouthguards as well as their low acceptance rate have been demonstrated. The aim of this study was to investigate the influence of customized mouthguards on hemodynamics.. This randomized crossover study used data from 13 subjects (23.5±1.4 years). The cardiopulmonary and metabolic parameters were observed during ergometer tests without mouthguard (control) in comparison to two types of mouthguards (with and normal without breathing channels). Maximum ventilation was significantly decreased with the normal mouthguard (113.3±30.00 l ∙ min-1) in contrast to the mouthguard with breathing channels (122.5±22.9 l ∙ min-1) and control (121.9±30.8 l ∙ min-1). Also the inspiration time was longer when using the normal mouthguard (0.70±0.11 s) compared to the mouthguard with breathing channels (0.63±0.11 s) and control (Co 0.64±0.10 s). Lactate was also increased under the influence of the mouthguard with breathing channels (10.72±1.4 mmol ∙ l-1) compared to the control (9.40±1.77 mmol ∙ l-1) and the normal mouthguard (9.02±1.67 mmol ∙ l-1). In addition, stroke volume kinetics (p=0.048) and maximum heart rates (p=0.01) show changes. Despite equal levels of oxygen uptake and performances under all three conditions, the use of mouthguards showed differences in cardiopulmonary parameters. The use of mouthguards during exercise does not affect physical performance and can be recommended for injury prevention.
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Affiliation(s)
- Johannes Lässing
- Institute of Sports Medicine & Prevention, University of Leipzig Faculty of Medicine, Leipzig, Germany
| | - Antina Schulze
- Institute of Sports Medicine & Prevention, University of Leipzig Faculty of Medicine, Leipzig, Germany
| | - Stefan Kwast
- Institute of Sports Medicine & Prevention, University of Leipzig Faculty of Medicine, Leipzig, Germany
| | - Roberto Falz
- Institut für Prävention, Universitat Leipzig, Leipzig, Germany
| | - Maximilian Vondran
- Department of Cardiovascular Surgery, University of Marburg, Marburg, Germany
| | - Thomas Schröter
- University Department for Cardiac Surgery Leipzig, Leipzig Heart Centre University Hospital Clinic for Cardiology, Leipzig, Germany
| | - Michael Borger
- Institute of Sports Medicine & Prevention, University of Leipzig Faculty of Medicine, Leipzig, Germany.,University Department for Cardiac Surgery Leipzig, Leipzig Heart Centre University Hospital Clinic for Cardiology, Leipzig, Germany
| | - Martin Busse
- Institute of Sports Medicine & Prevention, University of Leipzig Faculty of Medicine, Leipzig, Germany
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15
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Kalogirou C, Linxweiler J, Hartmann E, Seitz A, Puhr M, Spahn M, Frank T, Marouf H, Krebs M, Kübler H, Rosenwald A, Saar M, Junker K, Kneitz B, Schmitz W, Rosenfeldt M, Schulze A. Inhibition of cholesterol and steroid synthesis through miR-205 target gene SQLE is an intriguing treatment strategy in various in vitro and in vivo models of prostate cancer. EUR UROL SUPPL 2020. [DOI: 10.1016/s2666-1683(20)33838-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022] Open
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16
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Kaur J, Nagy L, Wan B, Saleh H, Schulze A, Raiman J, Inbar-Feigenberg M. The utility of dried blood spot monitoring of branched-chain amino acids for maple syrup urine disease: A retrospective chart review study. Clin Chim Acta 2020; 500:195-201. [DOI: 10.1016/j.cca.2019.10.016] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2019] [Revised: 10/15/2019] [Accepted: 10/17/2019] [Indexed: 01/06/2023]
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17
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Fikenzer S, Fikenzer K, Laufs U, Falz R, Schulze A, Busse M. Effects of cardioselective beta-blockade on plasma catecholamines and performance during different forms of exercise. J Sports Med Phys Fitness 2019; 60:643-649. [PMID: 31818057 DOI: 10.23736/s0022-4707.19.10225-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
BACKGROUND Beta-blockers are still frequently used in cardiovascular diseases but may negatively influence the exercise capacity. The aim of the study was to analyze the effect of beta-blockade on physical performance and plasma level of catecholamine during different forms of exercise. METHODS Ten prehypertensive athletes (age: 25.1±2.5 years, BMI: 24.4±2.4 kg/m2) performed repeated incremental exercise and steady-state-tests without and with the cardioselective beta-blocker bisoprolol (5mg/day). The cardiopulmonary, metabolic and the catecholamine responses were monitored. RESULTS Beta-blocker treatment had no effect on maximum power output (Pmax), lactate and the maximal oxygen uptake (VO2max) (Pmax: 269.0±41.5 vs. 269.0±41.5 W; lactate: 8.7±2.6 vs. 8.6±3.2 mmol/L and VO2max: 3110±482 vs. 3077±425 mL/min, respectively; P not significant). Epinephrine and norepinephrine showed a similar exponential increase to maximum load with and without beta-blockade (epinephrinemax 1.92±1.8 vs. 1.93±1.3 nmol/L; P not significant; norepinephrinemax 12.78±7.9 vs. 16.89±12.2 nmol/L; P not significant). Beta-blockade lowered heart rate (HR) and systolic blood pressure (SBP) at rest and under maximum load (ΔHRrest: 10.6±11.1 bpm, P<0.05, ΔHR-Max: 27.8±6.6 bpm, P<0.01; ΔSBPrest: 19.4±9.3 mmHg, P<0.05, ΔSBPmax: 17.7±15.3 mmHg, P<0.01). The maximum oxygen pulse was higher in the tests performed under beta-blockade (IET: ΔVO2/HR: 3.1±2.2 mL/beat, P<0.01; SST: ΔVO2/HR: 3.4±1.4 mL/beat, P<0.001). CONCLUSIONS Despite beta blockade and resulting differences in cardiopulmonary regulation during the exercise tests, the maximal oxygen capacity and the catecholamine concentration was similar. Higher exercise intensities (>50% Pmax) are associated with a marked increase in plasma catecholamines, which are not influenced by treatment with bisoprolol 5 mg/day.
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Affiliation(s)
- Sven Fikenzer
- Cardiology Clinic and Polyclinic Hospital, Leipzig University Hospital, Leipzig, Germany -
| | - Kati Fikenzer
- Cardiology Clinic and Polyclinic Hospital, Leipzig University Hospital, Leipzig, Germany
| | - Ulrich Laufs
- Cardiology Clinic and Polyclinic Hospital, Leipzig University Hospital, Leipzig, Germany
| | - Roberto Falz
- Institute of Sport Medicine and Prevention, University of Leipzig, Leipzig, Germany
| | - Antina Schulze
- Institute of Sport Medicine and Prevention, University of Leipzig, Leipzig, Germany
| | - Martin Busse
- Institute of Sport Medicine and Prevention, University of Leipzig, Leipzig, Germany
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18
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Schulze A, Busse M. Prediction of Ergogenic Mouthguard Effects in Volleyball: A Pilot Trial. Sports Med Int Open 2019; 3:E96-E101. [PMID: 31777758 PMCID: PMC6879018 DOI: 10.1055/a-1036-5888] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2019] [Revised: 10/10/2019] [Accepted: 10/14/2019] [Indexed: 10/29/2022] Open
Abstract
Dental occlusion may affect static and dynamic balance. The effects of a mouthguard on pinpoint accuracy in volleyball were investigated in 28 players who completed a volleyball specific test. Also, masticatory electromyographic tests were performed. The mean pinpoint accuracy was significantly higher with a mouthguard (68.6±9.3 vs. 64.0±7.0 points from 100; p< 0.006). However, differential mouthguard effects were seen, and three subgroups were classified: Group 1 (markedly improved pinpoint accuracy), Group 2 (improved pinpoint accuracy), and Group 3 (reduced pinpoint accuracy). Group 1 had a high masseter resting tone, the masseter activity was low in MVC (maximum voluntary clench) and increased in BOC (maximum bite on cotton rolls; p< 0.04). This indicates a masseter weakness, which would be compensated by a mouthguard. In Group 2, the masseter activity in MVC was high-normal with an imbalance which was improved in BOC (p< 0.01), indicating a possible mouthguard benefit. In Group 3, MVC and BOC were in a high-normal range and showed no relevant deficits. In these subjects the mouthguard had adverse effects. Overall, subjects with masticatory deficits had a benefit from the mouthguard in pinpoint accuracy. Positive or negative mouthguard responders may be detectible from electromyographic tests.
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Affiliation(s)
- Antina Schulze
- Institute of Sports Medicine & Prevention, University of Leipzig, Leipzig, Germany
| | - Martin Busse
- Institute of Sports Medicine & Prevention, University of Leipzig, Leipzig, Germany
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19
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Meyer R, Schacht S, Buschmann L, Begemann M, Kraft F, Haag N, Kochs A, Schulze A, Kurth I, Elbracht M. Biallelic CSGALNACT1-mutations cause a mild skeletal dysplasia. Bone 2019; 127:446-451. [PMID: 31325655 DOI: 10.1016/j.bone.2019.07.016] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/13/2019] [Revised: 07/03/2019] [Accepted: 07/14/2019] [Indexed: 11/16/2022]
Abstract
Genetic causes of skeletal disorders are manifold and affect, among others, enzymes of bone and connective tissue synthesis pathways. We present a twelve-year-old boy with a mild skeletal dysplasia, hypermobility of joints and axial malalignment of lower limbs and feet. Exome sequencing revealed a biallelic loss of function mutation in CSGALNACT1, which encodes chondroitin sulfate N-acetylgalactosaminyltransferase 1 and plays a major role in the chondroitin sulfate chain biosynthesis and therefore in the synthesis of glycosaminoglycans. Recently, the first case of a pediatric patient with a mild skeletal dysplasia due to a compound heterozygous large intragenic deletion and a damaging missense variant in CSGALNACT1 was reported. We here identify a second case and the first juvenile patient with a homozygous frameshift variant in CSGALNACT1 which corroborates its role in mild and non-progressive skeletal dysplasia with joint laxity.
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Affiliation(s)
- R Meyer
- Institute of Human Genetics, Medical Faculty, RWTH Aachen University, Aachen, Germany
| | - S Schacht
- Department for Radiology, Medical Faculty, RWTH Aachen University, Aachen, Germany
| | - L Buschmann
- Institute of Human Genetics, Medical Faculty, RWTH Aachen University, Aachen, Germany
| | - M Begemann
- Institute of Human Genetics, Medical Faculty, RWTH Aachen University, Aachen, Germany
| | - F Kraft
- Institute of Human Genetics, Medical Faculty, RWTH Aachen University, Aachen, Germany
| | - N Haag
- Institute of Human Genetics, Medical Faculty, RWTH Aachen University, Aachen, Germany
| | - A Kochs
- Gemeinschaftspraxis Dr. Kochs/Dr. Rode, Aachen, Germany
| | - A Schulze
- Department for Orthopedics, Medical Faculty, RWTH Aachen University, Aachen, Germany
| | - I Kurth
- Institute of Human Genetics, Medical Faculty, RWTH Aachen University, Aachen, Germany
| | - M Elbracht
- Institute of Human Genetics, Medical Faculty, RWTH Aachen University, Aachen, Germany.
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Schulze A, Neudert M. Vorbereitung zur Facharztprüfung HNO. HNO 2019; 67:628-632. [DOI: 10.1007/s00106-019-0707-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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21
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Schulze A, Kwast S, Busse M. Influence of Mouthguards on Physiological Responses in Rugby. Sports Med Int Open 2019; 3:E25-E31. [PMID: 31187053 PMCID: PMC6551212 DOI: 10.1055/a-0891-7021] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2019] [Revised: 03/18/2019] [Accepted: 04/08/2019] [Indexed: 11/12/2022] Open
Abstract
Mouthguards (MGs) are highly recommended in rugby. Airway obstruction and a resulting decrease in power output are potential disadvantages of their usage. The aim of the study was to assess possible limitations of “vented” (MG
V
) and custom-made mouthguards (MG
C
) on rugby players’ performance. The MG effects were investigated in 13 male first-league rugby players ranging from 18–34 years old. First a lung function test was completed. Then a double incremental treadmill test was performed to measure maximum aerobic performance, ventilation, VO
2
, VCO
2
, heart rate, and lactate. Effects on sprint times (10 and 40 m) and countermovement jumps were also investigated. Peak flow values were significantly decreased with MG
V
by about 0.9 l/s. Neither ventilatory parameters nor oxygen uptake were affected by either of the mouthguards. Maximum lactate was significantly decreased in both MG types vs. no MG use. The maximum running velocity was similar in all tests. The aerobic energy turnover was moderately increased with the MG
C
and MG
V
. No effects were seen on sprint times or jump tests. Although neither type of mouthguard had a significant impact on maximum performance in treadmill running, the anaerobic energy turnover was decreased.
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Affiliation(s)
- Antina Schulze
- Universität Leipzig, Institute of Sports Medicine, Leipzig, Germany
| | - Stefan Kwast
- Universität Leipzig, Institute of Sports Medicine, Leipzig, Germany
| | - Martin Busse
- Universität Leipzig, Institut für Sportmedizin & Prävention, Leipzig, Germany
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22
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Schulze A, Kwast S, Busse M. Effects of a Vented Mouthguard on Performance and Ventilation in a Basketball Field Setting. J Sports Sci Med 2019; 18:384-385. [PMID: 31191110 PMCID: PMC6543990] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2019] [Accepted: 04/02/2019] [Indexed: 06/09/2023]
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23
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Krause K, Sabat R, Witte‐Händel E, Schulze A, Puhl V, Maurer M, Wolk K. Schnitzler 综合征与 CCL2. Br J Dermatol 2019. [DOI: 10.1111/bjd.17670] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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24
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Krause K, Sabat R, Witte‐Händel E, Schulze A, Puhl V, Maurer M, Wolk K. CCL2 in Schnitzler syndrome. Br J Dermatol 2019. [DOI: 10.1111/bjd.17654] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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25
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Krause K, Sabat R, Witte-Händel E, Schulze A, Puhl V, Maurer M, Wolk K. Association of CCL2 with systemic inflammation in Schnitzler syndrome. Br J Dermatol 2018; 180:859-868. [PMID: 30339714 DOI: 10.1111/bjd.17334] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/14/2018] [Indexed: 12/22/2022]
Abstract
BACKGROUND Schnitzler syndrome (SchS) is a rare autoinflammatory disease characterized by urticarial exanthema, bone and joint alterations, fever and monoclonal gammopathy, which manifest mostly in the second half of life. It involves overactivation of the interleukin (IL)-1 system, but the exact pathophysiological pathways remain largely unknown. OBJECTIVES To identify and characterize the pathogenetic players in SchS. METHODS Blood parameters were quantified in patients with SchS compared with healthy controls and patients with psoriasis and hidradenitis suppurativa using enzyme-linked immunosorbent assay (ELISA). CCL2 expression in cultured primary cells was analysed by quantitative reverse-transcriptase polymerase chain reaction and ELISA. RESULTS CCL2, a chemoattractant for monocytic and further mononuclear immune cells, was found to be significantly elevated in patients with SchS. CCL2 levels showed a positive association with global disease activity, especially with bone pain, but not disease duration, gammopathy, neutrophilia or skin disease. In vitro stimulation assays demonstrated a strong CCL2 production capacity of mononuclear immune cells and fibroblasts, but not epithelial or endothelial cells. Among a range of inflammatory mediators, only IL-1β (immune cells, fibroblasts) and tumour necrosis factor (TNF)-α (fibroblasts) were important CCL2 inducers. TNF-α, but not IL-17, strengthened the CCL2-inducing effect of IL-1β in fibroblasts. Accordingly, CCL2 levels positively correlated with both TNF-α and IL-1β serum levels in patients with SchS. Therapeutic IL-1β blockade decreased CCL2 blood levels in these patients as early as 1 week after the initiation of treatment. CONCLUSIONS CCL2 may be an important component of the pathogenetic cascade leading to bone alterations, and a suitable marker of disease activity in patients with SchS.
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Affiliation(s)
- K Krause
- Dermatological Allergology, Department of Dermatology and Allergy, Charité - Universitätsmedizin Berlin, Charitéplatz 1, 10117, Berlin, Germany.,Autoinflammation Reference Centre Charité, Charité - Universitätsmedizin Berlin, Charitéplatz 1, 10117, Berlin, Germany
| | - R Sabat
- Interdisciplinary Group of Molecular Immunopathology, Dermatology/Medical Immunology and, Charité - Universitätsmedizin Berlin, Charitéplatz 1, 10117, Berlin, Germany.,Psoriasis Research and Treatment Centre, Charité - Universitätsmedizin Berlin, Charitéplatz 1, 10117, Berlin, Germany
| | - E Witte-Händel
- Interdisciplinary Group of Molecular Immunopathology, Dermatology/Medical Immunology and, Charité - Universitätsmedizin Berlin, Charitéplatz 1, 10117, Berlin, Germany.,Psoriasis Research and Treatment Centre, Charité - Universitätsmedizin Berlin, Charitéplatz 1, 10117, Berlin, Germany
| | - A Schulze
- Interdisciplinary Group of Molecular Immunopathology, Dermatology/Medical Immunology and, Charité - Universitätsmedizin Berlin, Charitéplatz 1, 10117, Berlin, Germany.,Psoriasis Research and Treatment Centre, Charité - Universitätsmedizin Berlin, Charitéplatz 1, 10117, Berlin, Germany
| | - V Puhl
- Dermatological Allergology, Department of Dermatology and Allergy, Charité - Universitätsmedizin Berlin, Charitéplatz 1, 10117, Berlin, Germany.,Autoinflammation Reference Centre Charité, Charité - Universitätsmedizin Berlin, Charitéplatz 1, 10117, Berlin, Germany
| | - M Maurer
- Dermatological Allergology, Department of Dermatology and Allergy, Charité - Universitätsmedizin Berlin, Charitéplatz 1, 10117, Berlin, Germany.,Autoinflammation Reference Centre Charité, Charité - Universitätsmedizin Berlin, Charitéplatz 1, 10117, Berlin, Germany
| | - K Wolk
- Interdisciplinary Group of Molecular Immunopathology, Dermatology/Medical Immunology and, Charité - Universitätsmedizin Berlin, Charitéplatz 1, 10117, Berlin, Germany.,Psoriasis Research and Treatment Centre, Charité - Universitätsmedizin Berlin, Charitéplatz 1, 10117, Berlin, Germany.,Berlin-Brandenburg Centre for Regenerative Therapies, Charité - Universitätsmedizin Berlin, Augustenburger Platz 1, 13353, Berlin, Germany
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26
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Coetzee C, Schulze A, Mokwena L, du Toit W, Buica A. Investigation of Thiol Levels in Young Commercial South African Sauvignon blanc and Chenin blanc Wines Using Propiolate Derivatization and GC-MS/MS. S AFR J ENOL VITIC 2018. [DOI: 10.21548/39-2-2683] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
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27
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Ros S, Flöter J, Kaymak I, Da Costa C, Houddane A, Dubuis S, Griffiths B, Mitter R, Walz S, Blake S, Behrens A, Brindle KM, Zamboni N, Rider MH, Schulze A. 6-Phosphofructo-2-kinase/fructose-2,6-biphosphatase 4 is essential for p53-null cancer cells. Oncogene 2017; 36:3287-3299. [PMID: 28092678 DOI: 10.1038/onc.2016.477] [Citation(s) in RCA: 54] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2015] [Revised: 11/08/2016] [Accepted: 11/15/2016] [Indexed: 01/02/2023]
Abstract
The bifunctional enzyme 6-phosphofructo-2-kinase/fructose-2,6-biphosphatase-4 (PFKFB4) controls metabolic flux through allosteric regulation of glycolysis. Here we show that p53 regulates the expression of PFKFB4 and that p53-deficient cancer cells are highly dependent on the function of this enzyme. We found that p53 downregulates PFKFB4 expression by binding to its promoter and mediating transcriptional repression via histone deacetylases. Depletion of PFKFB4 from p53-deficient cancer cells increased levels of the allosteric regulator fructose-2,6-bisphosphate, leading to increased glycolytic activity but decreased routing of metabolites through the oxidative arm of the pentose-phosphate pathway. PFKFB4 was also required to support the synthesis and regeneration of nicotinamide adenine dinucleotide phosphate (NADPH) in p53-deficient cancer cells. Moreover, depletion of PFKFB4-attenuated cellular biosynthetic activity and resulted in the accumulation of reactive oxygen species and cell death in the absence of p53. Finally, silencing of PFKFB4-induced apoptosis in p53-deficient cancer cells in vivo and interfered with tumour growth. These results demonstrate that PFKFB4 is essential to support anabolic metabolism in p53-deficient cancer cells and suggest that inhibition of PFKFB4 could be an effective strategy for cancer treatment.
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Affiliation(s)
- S Ros
- Gene Expression Analysis Laboratory, Cancer Research UK London Research Institute, London, UK
- Cancer Research UK Cambridge Institute, University of Cambridge, Cambridge, UK
| | - J Flöter
- Theodor-Boveri-Institute, Biocenter, Am Hubland, Würzburg, Germany
| | - I Kaymak
- Theodor-Boveri-Institute, Biocenter, Am Hubland, Würzburg, Germany
| | - C Da Costa
- Adult Stem Cell Laboratory, The Francis Crick Institute, London, UK
| | - A Houddane
- Protein Phosphorylation Unit, de Duve Institute, Université Catholique de Louvain, Brussels, Belgium
| | - S Dubuis
- Institute of Molecular Systems Biology, ETH Zurich, Zurich, Switzerland
| | - B Griffiths
- Gene Expression Analysis Laboratory, Cancer Research UK London Research Institute, London, UK
| | - R Mitter
- Bioinformatics and Biostatistics, The Francis Crick Institute, London, UK
| | - S Walz
- Comprehensive Cancer Center, Core Unit Bioinformatics, Biocenter, Würzburg, Germany
| | - S Blake
- Adult Stem Cell Laboratory, The Francis Crick Institute, London, UK
| | - A Behrens
- Adult Stem Cell Laboratory, The Francis Crick Institute, London, UK
- Faculty of Life Sciences and Medicine, King's College London, Guy's Campus, London, UK
| | - K M Brindle
- Cancer Research UK Cambridge Institute, University of Cambridge, Cambridge, UK
| | - N Zamboni
- Institute of Molecular Systems Biology, ETH Zurich, Zurich, Switzerland
| | - M H Rider
- Protein Phosphorylation Unit, de Duve Institute, Université Catholique de Louvain, Brussels, Belgium
| | - A Schulze
- Gene Expression Analysis Laboratory, Cancer Research UK London Research Institute, London, UK
- Theodor-Boveri-Institute, Biocenter, Am Hubland, Würzburg, Germany
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28
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Schulze A, Loo R, Ryan P, Wormington M, Favia P, Witters L, Collaert N, Bender H, Vandervorst W, Caymax M. Observation and understanding of anisotropic strain relaxation in selectively grown SiGe fin structures. Nanotechnology 2017; 28:145703. [PMID: 28186001 DOI: 10.1088/1361-6528/aa5fbb] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
The performance of heterogeneous 3D transistor structures critically depends on the composition and strain state of the buffer, channel and source/drain regions. In this paper we used an in-line high resolution x-ray diffraction (HRXRD) tool to study in detail the composition and strain in selectively grown SiGe/Ge fin structures with widths down to 20 nm. For this purpose we arranged fins of identical dimensions into larger arrays which were then analyzed using an x-ray beam several tens of micrometers in size. Asymmetric reciprocal space maps measured both parallel and perpendicular to the fins allowed us to extract the lattice parameters in all three spatial directions. Our results demonstrate an anisotropic in-plane strain state of the selectively grown SiGe buffer in case of narrower fins with significantly reduced relaxation in the direction along the fin. This observation was verified using nano-beam electron diffraction, and is explained based on the reduced probability for dislocation half-loops to evolve in trenches narrower than a few times the critical radius. Moreover, we introduce and discuss in detail a methodology for the determination of the composition in case of an anisotropic in-plane strain state which differs from the procedure commonly used for blanket layers. Our findings verify the importance of in-line HRXRD measurements for process development and monitoring as well as the fundamental study of relaxation and defect formation in confined volumes.
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Affiliation(s)
- A Schulze
- imec, Kapeldreef 75, B-3001 Leuven, Belgium
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29
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30
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31
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Dai H, Zhang VW, El-Hattab AW, Ficicioglu C, Shinawi M, Lines M, Schulze A, McNutt M, Gotway G, Tian X, Chen S, Wang J, Craigen WJ, Wong LJ. FBXL4 defects are common in patients with congenital lactic acidemia and encephalomyopathic mitochondrial DNA depletion syndrome. Clin Genet 2017; 91:634-639. [PMID: 27743463 DOI: 10.1111/cge.12894] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2016] [Revised: 10/11/2016] [Accepted: 10/11/2016] [Indexed: 11/30/2022]
Abstract
Mutations in FBXL4 have recently been recognized to cause a mitochondrial disorder, with clinical features including early onset lactic acidosis, hypotonia, and developmental delay. FBXL4 sequence analysis was performed in 808 subjects suspected to have a mitochondrial disorder. In addition, 28 samples from patients with early onset of lactic acidosis, but without identifiable mutations in 192 genes known to cause mitochondrial diseases, were examined for FBXL4 mutations. Definitive diagnosis was made in 10 new subjects with a total of 7 novel deleterious variants; 5 null and 2 missense substitutions. All patients exhibited congenital lactic acidemia, most of them with severe encephalopathic presentation, and global developmental delay. Overall, FBXL4 defects account for at least 0.7% (6 out of 808) of subjects suspected to have a mitochondrial disorder, and as high as 14.3% (4 out of 28) in young children with congenital lactic acidosis and clinical features of mitochondrial disease. Including FBLX4 in the mitochondrial diseases panel should be particularly important for patients with congenital lactic acidosis.
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Affiliation(s)
- H Dai
- Baylor Genetics, Houston, TX, USA
| | - V W Zhang
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX, USA
| | - A W El-Hattab
- Division of Clinical Genetics and Metabolic Disorders, Pediatric Department, Tawam Hospital, Al-Ain, United Arab Emirates
| | - C Ficicioglu
- Division of Human Genetics and Metabolism, The Children's Hospital of Philadelphia, Philadelphia, PA, USA
| | - M Shinawi
- Division of Genetics and Genomics, Washington University School of Medicine, St. Louis, MO, USA
| | - M Lines
- Department of Genetics, Children's Hospital of Eastern Ontario, Ottawa, Ontario, Canada
| | - A Schulze
- Division of Clinical and Metabolic Genetics, The Hospital for Sick Children and University of Toronto, Toronto, Ontario, Canada
| | - M McNutt
- Children's Medical Center, Dallas, TX, USA
| | - G Gotway
- Children's Medical Center, Dallas, TX, USA
| | - X Tian
- Baylor Genetics, Houston, TX, USA
| | - S Chen
- Baylor Genetics, Houston, TX, USA
| | - J Wang
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX, USA
| | - W J Craigen
- Baylor Genetics, Houston, TX, USA.,Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX, USA
| | - L-J Wong
- Baylor Genetics, Houston, TX, USA.,Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX, USA
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32
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Burgmann M, Aicher J, Teichmann L, Hasbargen U, Schulze A, Flemmer AW. Postnatale Sauerstoffsättigung reifer Neugeborener. Geburtshilfe Frauenheilkd 2016. [DOI: 10.1055/s-0036-1592947] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022] Open
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33
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Dobler F, Delius M, Lehner M, Bayer A, Herber-Jonat S, Schulze A, Flemmer AW, Dostert S, Friese K, Mahner S, Hasbargen U. EXIT bei Pierre-Robin-Sequenz – Fallbericht zu perinatalem Management einer Hochrisikogeburt. Geburtshilfe Frauenheilkd 2016. [DOI: 10.1055/s-0036-1592869] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022] Open
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34
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35
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Abstract
The prevalence of congenital hip dysplasia in Germany is 2-4 % and that of hip dislocation is 0.5-1 %. If early therapy is not successful or the hip dysplasia or dislocation is diagnosed too late (children of over 1 year of age) surgical treatment is indicated to increase the femoral coverage. The innominate osteotomy, published by Robert B. Salter 1961, is a worldwide established technique to improve the lateral and ventral coverage of the femoral head in primary or secondary hip dysplasia or dislocation. In this paper we discuss Salter's technique and present indications, the perioperative procedure, operative modifications and operative extensions and demonstrate the anatomical requirements, postoperative biomechanical changes and long-term results.
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Affiliation(s)
- A Schulze
- Universitätsklinikum Aachen (AöR), Pauwelsstr. 30, 52074, Aachen, Deutschland.
| | - M Tingart
- Universitätsklinikum Aachen (AöR), Pauwelsstr. 30, 52074, Aachen, Deutschland
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36
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Lüring C, Tingart M, Zahedi A, Schulze A. [Pelvic osteotomies]. Orthopade 2016; 45:643. [PMID: 27338828 DOI: 10.1007/s00132-016-3296-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
- C Lüring
- Orthopädische Klinik, Klinikum Dortmund gGgmbH, Beurhausstraße 40, 44137, Dortmund, Deutschland.
| | - M Tingart
- Klinik für Orthopädie, Uniklinikum RWTH Aachen, Pauwelsstraße 30, 52074, Aachen, Deutschland.
| | - A Zahedi
- Orthopädische Klinik, Klinikum Dortmund gGgmbH, Beurhausstraße 40, 44137, Dortmund, Deutschland
| | - A Schulze
- Klinik für Orthopädie, Uniklinikum RWTH Aachen, Pauwelsstraße 30, 52074, Aachen, Deutschland
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37
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Schulze A, Busse M. Gender Differences in Periodontal Status and Oral Hygiene of Non-Diabetic and Type 2 Diabetic Patients. Open Dent J 2016; 10:287-97. [PMID: 27347232 PMCID: PMC4901196 DOI: 10.2174/1874210601610010287] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2016] [Revised: 05/05/2016] [Accepted: 05/09/2016] [Indexed: 12/16/2022] Open
Abstract
BACKGROUND This study investigated gender dependent differences by the comparison of periodontal status and oral hygiene between diabetic patients and non-diabetic subjects. METHODS 517 mostly obese subjects (171 non-diabetic, 205 type 2 diabetic with oral and 141 with insulin therapy; mean: 59 years) completed an oral hygiene questionnaire and had a clinical examination, including periodontal screening and recording (PSR), percentage of bleeding teeth (PBT), probing pocket depth (PD), gingivitis index (GI), and number of teeth (Tn). Main parameters were "periodontitis" and "oral hygiene behaviour", each defined by 5 sub-parameters. For a comparison of all results, each sub-parameter was set 0.2. The "low performance index" (LoP) was the sum of significantly worse sub-parameters in the compared groups (maximum of low performing = 1.0). RESULTS Gender comparison: In non-diabetic and diabetic patients with oral medication, males performed worse (LoP: periodontitis 0.6 - 0.8; oral hygiene 0.4 - 0.6). The male insulin group performed worse oral hygiene (LoP: 0.4) than females with insulin therapy, whereas the periodontal status showed no difference. Diabetic and non-diabetic groups: Females: Diabetic groups performed worse than non-diabetics (LoP: periodontitis 0.2 - 1.0; oral hygiene 0.4). Insulin patients had worse periodontal status and showed no difference in oral hygiene when compared to diabetic patients with oral medication (LoP: 0.2). Males: Diabetic group with oral medication had worse periodontal status than non-diabetics (LoP: 0.6). CONCLUSIONS The periodontal status was mainly due to oral hygiene behaviour, which was worse in men. Apparently behaviour and not diabetes is the major determinant of periodontitis. Men apparently need much more advise than women.
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Affiliation(s)
- Antina Schulze
- General Outpatient Ambulance and Sports Dentistry of the Institute of Sports Medicine, University of Leipzig, Leipzig, Germany
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38
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Schulze A, Tran C, Levandovskiy V, Patel V, Cortez MA. Systemic availability of guanidinoacetate affects GABAA receptor function and seizure threshold in GAMT deficient mice. Amino Acids 2016; 48:2041-7. [PMID: 26898547 DOI: 10.1007/s00726-016-2197-0] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2015] [Accepted: 02/08/2016] [Indexed: 11/29/2022]
Abstract
Deficiency of guanidinoacetate methyltransferase (GAMT) causes creatine depletion and guanidinoacetate accumulation in brain with the latter deemed to be responsible for the severe seizure disorder seen in affected patients. We studied electrical brain activity and GABAA mediated mechanisms of B6J.Cg-Gamt(tm1Isb) mice. Electrocorticographic (ECoG) monitoring of pharmacological treatments with ornithine (5 % in drinking water for 5-18 days) and/or Picrotoxin (PTX) (a GABAA receptor antagonist) (1.5 mg/kg, I.P.) in Gamt(MUT) and Gamt(WT) groups [n = 3, mean age (SEM) = 6.9 (0.2) weeks]. Mice were fitted with two frontal and two parietal epidural electrodes under ketamine/xylazine anesthesia. Baseline and test recordings were performed for determination of seizure activity over a 2 h period. The ECoG baseline of Gamt(MUT) exhibited an abnormal monotonous cortical rhythm (7-8 Hz) with little variability during awake and sleep states compared to wild type recordings. Ornithine treatment and also PTX administration led to a relative normalization of the Gamt(MUT) ECoG phenotype. Gamt(WT) on PTX exhibited electro-behavioral seizures, whereas the Gamt(MUT) did not have PTX induced seizures at the same PTX dose. Gamt(MUT) treated with both ornithine and PTX did not show electro-behavioral seizures while ornithine elevated the PTX seizure threshold of Gamt(MUT) mice even further. These data demonstrate: (1) that there is expression of electrical seizure activity in this Gamt-deficient transgenic mouse strain, and (2) that the systemic availability of guanidinoacetate affects GABAA receptor function and seizure thresholds. These findings are directly and clinically relevant for patients with a creatine-deficiency syndrome due to genetic defects in GAMT and provide a rational basis for a combined ornithine/picrotoxin therapeutic intervention.
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Affiliation(s)
- A Schulze
- Program of Genetics and Genome Biology, Peter Gilgan Center for Research and Learning, The Hospital for Sick Children, 555 University Avenue, Toronto, ON, M5G 1X8, Canada. .,Department of Pediatrics, University of Toronto, Toronto, ON, Canada.
| | - C Tran
- Program of Genetics and Genome Biology, Peter Gilgan Center for Research and Learning, The Hospital for Sick Children, 555 University Avenue, Toronto, ON, M5G 1X8, Canada.,Center for Molecular Diseases, Lausanne University Hospital, Lausanne, Switzerland
| | - V Levandovskiy
- Program of Genetics and Genome Biology, Peter Gilgan Center for Research and Learning, The Hospital for Sick Children, 555 University Avenue, Toronto, ON, M5G 1X8, Canada
| | - V Patel
- Program of Genetics and Genome Biology, Peter Gilgan Center for Research and Learning, The Hospital for Sick Children, 555 University Avenue, Toronto, ON, M5G 1X8, Canada
| | - M A Cortez
- Department of Pediatrics, University of Toronto, Toronto, ON, Canada.,Program of Brain and Behavior Neuroscience and Mental Health, Peter Gilgan Center for Research and Learning, The Hospital for Sick Children, Toronto, ON, Canada
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39
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Abstract
The zeta potential of membrane surfaces and the resulting electrostatic interactions are determining factors of membrane fouling. This publication presents the impact of salt concentration and pH value on these interactions.
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Affiliation(s)
- D. Breite
- Leibniz Institute of Surface Modification
- Leipzig
- Germany
| | - M. Went
- Leibniz Institute of Surface Modification
- Leipzig
- Germany
| | - A. Prager
- Leibniz Institute of Surface Modification
- Leipzig
- Germany
| | - A. Schulze
- Leibniz Institute of Surface Modification
- Leipzig
- Germany
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40
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Breite D, Went M, Thomas I, Prager A, Schulze A. Particle adsorption on a polyether sulfone membrane: how electrostatic interactions dominate membrane fouling. RSC Adv 2016. [DOI: 10.1039/c6ra13787c] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
This study presents a new method focussing on electrostatic interactions during fouling of microfiltration membranes.
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Affiliation(s)
- D. Breite
- Leibniz Institute of Surface Modification
- Leipzig
- Germany
| | - M. Went
- Leibniz Institute of Surface Modification
- Leipzig
- Germany
| | - I. Thomas
- Leibniz Institute of Surface Modification
- Leipzig
- Germany
| | - A. Prager
- Leibniz Institute of Surface Modification
- Leipzig
- Germany
| | - A. Schulze
- Leibniz Institute of Surface Modification
- Leipzig
- Germany
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Lee B, Diaz GA, Rhead W, Lichter-Konecki U, Feigenbaum A, Berry SA, Le Mons C, Bartley J, Longo N, Nagamani SC, Berquist W, Gallagher RC, Harding CO, McCandless SE, Smith W, Schulze A, Marino M, Rowell R, Coakley DF, Mokhtarani M, Scharschmidt BF. Glutamine and hyperammonemic crises in patients with urea cycle disorders. Mol Genet Metab 2016; 117:27-32. [PMID: 26586473 PMCID: PMC4915945 DOI: 10.1016/j.ymgme.2015.11.005] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/21/2015] [Revised: 11/10/2015] [Accepted: 11/10/2015] [Indexed: 12/30/2022]
Abstract
UNLABELLED Blood ammonia and glutamine levels are used as biomarkers of control in patients with urea cycle disorders (UCDs). This study was undertaken to evaluate glutamine variability and utility as a predictor of hyperammonemic crises (HACs) in UCD patients. METHODS The relationships between glutamine and ammonia levels and the incidence and timing of HACs were evaluated in over 100 adult and pediatric UCD patients who participated in clinical trials of glycerol phenylbutyrate. RESULTS The median (range) intra-subject 24-hour coefficient of variation for glutamine was 15% (8-29%) as compared with 56% (28%-154%) for ammonia, and the correlation coefficient between glutamine and concurrent ammonia levels varied from 0.17 to 0.29. Patients with baseline (fasting) glutamine values >900 μmol/L had higher baseline ammonia levels (mean [SD]: 39.6 [26.2]μmol/L) than patients with baseline glutamine ≤ 900 μmol/L (26.6 [18.0]μmol/L). Glutamine values >900 μmol/L during the study were associated with an approximately 2-fold higher HAC risk (odds ratio [OR]=1.98; p=0.173). However, glutamine lost predictive significance (OR=1.47; p=0.439) when concomitant ammonia was taken into account, whereas the predictive value of baseline ammonia ≥ 1.0 upper limit of normal (ULN) was highly statistically significant (OR=4.96; p=0.013). There was no significant effect of glutamine >900 μmol/L on time to first HAC crisis (hazard ratio [HR]=1.14; p=0.813), but there was a significant effect of baseline ammonia ≥ 1.0 ULN (HR=4.62; p=0.0011). CONCLUSIONS The findings in this UCD population suggest that glutamine is a weaker predictor of HACs than ammonia and that the utility of the predictive value of glutamine will need to take into account concurrent ammonia levels.
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Affiliation(s)
- B Lee
- Baylor College of Medicine, Houston, TX, USA.
| | - G A Diaz
- Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - W Rhead
- The Medical College of Wisconsin, Milwaukee, WI, USA
| | | | | | - S A Berry
- Univ. of Minnesota, Minneapolis, MN, USA
| | - C Le Mons
- National Urea Cycle Disorders Foundation, Pasadena, CA, USA
| | - J Bartley
- Miller Children's Hospital, Long Beach, CA, USA
| | - N Longo
- Univ. of UT, Salt Lake City, UT, USA
| | | | | | | | | | - S E McCandless
- Case Western Reserve Univ. Medical Center, Cleveland, OH, USA
| | - W Smith
- Maine Medical Ctr., Portland, ME, USA
| | - A Schulze
- The Hospital for Sick Children, Univ. of Toronto, Canada
| | - M Marino
- Oregon Health Sciences, Portland, OR, USA
| | - R Rowell
- MED Technical Consulting, Inc., Union City, CA, USA
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Schulze A, Cao R, Eyben P, Hantschel T, Vandervorst W. Outwitting the series resistance in scanning spreading resistance microscopy. Ultramicroscopy 2015; 161:59-65. [PMID: 26624516 DOI: 10.1016/j.ultramic.2015.10.029] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2015] [Revised: 10/27/2015] [Accepted: 10/28/2015] [Indexed: 11/18/2022]
Abstract
The performance of nanoelectronics devices critically depends on the distribution of active dopants inside these structures. For this reason, dopant profiling has been defined as one of the major metrology challenges by the international technology roadmap of semiconductors. Scanning spreading resistance microscopy (SSRM) has evolved as one of the most viable approaches over the last decade due to its excellent spatial resolution, sensitivity and quantification accuracy. However, in case of advanced device architectures like fins and nanowires a proper measurement of the spreading resistance is often hampered by the increasing impact of parasitic series resistances (e.g. bulk series resistance) arising from the confined nature of the aforementioned structures. In order to overcome this limitation we report in this paper the development and implementation of a novel SSRM mode (fast Fourier transform-SSRM: FFT-SSRM) which essentially decouples the spreading resistance from parasitic series resistance components. We show that this can be achieved by a force modulation (leading to a modulated spreading resistance signal) in combination with a lock-in deconvolution concept. In this paper we first introduce the principle of operation of the technique. We discuss in detail the underlying physical mechanisms as well as the technical implementation on a state-of-the-art atomic force microscope (AFM). We demonstrate the performance of FFT-SSRM and its ability to remove substantial series resistance components in practice. Eventually, the possibility of decoupling the spreading resistance from the intrinsic probe resistance will be demonstrated and discussed.
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Affiliation(s)
- A Schulze
- IMEC, Kapeldreef 75, 3001 Leuven, Belgium.
| | - R Cao
- IMEC, Kapeldreef 75, 3001 Leuven, Belgium
| | - P Eyben
- IMEC, Kapeldreef 75, 3001 Leuven, Belgium
| | | | - W Vandervorst
- IMEC, Kapeldreef 75, 3001 Leuven, Belgium; KU Leuven, Department of Physics and Astronomy, Celestijnenlaan 200D, 3001 Leuven, Belgium
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Simoen E, Eneman G, Hikavyy AY, Loo R, Gupta S, Merckling C, Alian A, Schulze A, Caymax M, Langer R, Barla K, Claeys C. (Invited) On the Electrical Activity of Extended Defects in High-Mobility Channel Materials. ACTA ACUST UNITED AC 2015. [DOI: 10.1149/06910.0119ecst] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Lewis CA, Brault C, Peck B, Bensaad K, Griffiths B, Mitter R, Chakravarty P, East P, Dankworth B, Alibhai D, Harris AL, Schulze A. SREBP maintains lipid biosynthesis and viability of cancer cells under lipid- and oxygen-deprived conditions and defines a gene signature associated with poor survival in glioblastoma multiforme. Oncogene 2015; 34:5128-40. [PMID: 25619842 DOI: 10.1038/onc.2014.439] [Citation(s) in RCA: 159] [Impact Index Per Article: 17.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2014] [Revised: 11/04/2014] [Accepted: 12/05/2014] [Indexed: 12/16/2022]
Abstract
Oxygen and nutrient limitation are common features of the tumor microenvironment and are associated with cancer progression and induction of metastasis. The inefficient vascularization of tumor tissue also limits the penetration of other serum-derived factors, such as lipids and lipoproteins, which can be rate limiting for cell proliferation and survival. Here we have investigated the effect of hypoxia and serum deprivation on sterol regulatory element-binding protein (SREBP) activity and the expression of lipid metabolism genes in human glioblastoma multiforme (GBM) cancer cells. We found that SREBP transcriptional activity was induced by serum depletion both in normoxic and hypoxic cells and that activation of SREBP was required to maintain the expression of fatty acid and cholesterol metabolism genes under hypoxic conditions. Moreover, expression of stearoyl-CoA desaturase, the enzyme required for the generation of mono-unsaturated fatty acids, and fatty acid-binding protein 7, a regulator of glioma stem cell function, was strongly dependent on SREBP function. Inhibition of SREBP function blocked lipid biosynthesis in hypoxic cancer cells and impaired cell survival under hypoxia and in a three-dimensional spheroid model. Finally, gene expression analysis revealed that SREBP defines a gene signature that is associated with poor survival in glioblastoma.
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Affiliation(s)
- C A Lewis
- Gene Expression Analysis Laboratory, Cancer Research UK London Research Institute, London, UK
| | - C Brault
- Theodor-Boveri-Institute, Biocenter, Am Hubland, Würzburg, Germany
| | - B Peck
- Gene Expression Analysis Laboratory, Cancer Research UK London Research Institute, London, UK
| | - K Bensaad
- CRUK Growth Factor Group, The Weatherall Institute of Molecular Medicine, University of Oxford, Headington, Oxford, UK
| | - B Griffiths
- Gene Expression Analysis Laboratory, Cancer Research UK London Research Institute, London, UK
| | - R Mitter
- Bioinformatics and Biostatistics Service, Cancer Research UK London Research Institute, London, UK
| | - P Chakravarty
- Bioinformatics and Biostatistics Service, Cancer Research UK London Research Institute, London, UK
| | - P East
- Bioinformatics and Biostatistics Service, Cancer Research UK London Research Institute, London, UK
| | - B Dankworth
- Theodor-Boveri-Institute, Biocenter, Am Hubland, Würzburg, Germany
| | - D Alibhai
- Light Microscopy Core, Cancer Research UK London Research Institute, London, UK
| | - A L Harris
- CRUK Growth Factor Group, The Weatherall Institute of Molecular Medicine, University of Oxford, Headington, Oxford, UK
| | - A Schulze
- Gene Expression Analysis Laboratory, Cancer Research UK London Research Institute, London, UK
- Theodor-Boveri-Institute, Biocenter, Am Hubland, Würzburg, Germany
- Comprehensive Cancer Center Mainfranken Würzburg, Germany
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Quack V, Rath B, Schenker H, Schulze A, El Mansy Y, Tingart M, Betsch M. [Fusion in adolescent idiopathic scoliosis : Anterior, posterior or combined? One-stage or two-stage?]. Orthopade 2015; 44:879-84. [PMID: 26376986 DOI: 10.1007/s00132-015-3164-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
Scoliosis is a complex, three-dimensional spinal deformity with various causes. Adolescent idiopathic scoliosis (AIS) is the most common form. Surgical treatment is indicated for curves greater than 45-50° meaured using the Cobb method. We can distinguish among posterior, anterior or combined surgical procedures. Today, the posterior, transpedicular approach has revolutionized scoliosis surgery. This review gives an overview of current surgical options in scoliosis treatment.
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Affiliation(s)
- V Quack
- Klinik für Orthopädie, RWTH Aachen, Universitätsklinikum Aachen, Pauwelsstraße 30, 52074, Aachen, Deutschland.
| | - B Rath
- Klinik für Orthopädie, RWTH Aachen, Universitätsklinikum Aachen, Pauwelsstraße 30, 52074, Aachen, Deutschland
| | - H Schenker
- Klinik für Orthopädie, RWTH Aachen, Universitätsklinikum Aachen, Pauwelsstraße 30, 52074, Aachen, Deutschland
| | - A Schulze
- Klinik für Orthopädie, RWTH Aachen, Universitätsklinikum Aachen, Pauwelsstraße 30, 52074, Aachen, Deutschland
| | - Y El Mansy
- Klinik für Orthopädie, RWTH Aachen, Universitätsklinikum Aachen, Pauwelsstraße 30, 52074, Aachen, Deutschland
| | - M Tingart
- Klinik für Orthopädie, RWTH Aachen, Universitätsklinikum Aachen, Pauwelsstraße 30, 52074, Aachen, Deutschland
| | - M Betsch
- Klinik für Orthopädie, RWTH Aachen, Universitätsklinikum Aachen, Pauwelsstraße 30, 52074, Aachen, Deutschland
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Förster KM, Herber-Jonat S, Huebener C, Hasbargen U, Schmitz C, Schramm R, Lehner M, Stehr M, Schulze A, Flemmer AW. [Establishment of a Neonatal ECMO Programme on the Basis of a Special Training Programme--A 6-year Analysis]. Z Geburtshilfe Neonatol 2015; 219:274-80. [PMID: 26378775 DOI: 10.1055/s-0035-1547298] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
BACKGROUND Internationally the need for neonatal ECMO is decreasing and the Extracorporeal Life Support Organization (ELSO) recommends that centres providing neonatal ECMO should treat at least 6 children per year. METHOD After a one-year training programme and preparation of the clinical application, neonatal ECMO was established and subsequently 41 infants [median age 1 day (1-172 days), median weight 3.25 kg (1.27-5.79 kg)] with severe respiratory failure have been treated within a 6-year period (fall 2008-fall 2014). For rescue therapy we provide inhaled nitric oxide, high-frequency oscillation and other differentiated ventilator strategies. Parallel to the clinical use of ECMO all employees have been trained in a special programme at 3-monthly intervals. RESULTS By establishing an elaborate training programme and concentrating the treatment of critically ill newborns in one centre, the expertise of both running and preventing of neonatal ECMO due to pulmonary failure can be achieved. The diagnoses correlate to those of other centres which perform neonatal ECMO. 13 infants needed ECMO. The resulting overall survival rate was 11/12 (91.7%) infants treated with ECMO with a curative approach. All patients could be weaned from ECMO. CONCLUSION In the context of a specialised university hospital with all treatment options for critically ill newborns and with the establishment of a specialised training programme, neonatal ECMO for pulmonary failure can achieve equally good results in comparison to those of national and international ECMO centres.
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Affiliation(s)
- K M Förster
- Kinderklinik und Kinderpoliklinik im Dr. von Haunerschen Kinderspital am Klinikum der Universität, Neonatologie der Kinderklinik am Perinatalzentrum der LMU München, Campus Großhadern, München
| | - S Herber-Jonat
- Kinderklinik und Kinderpoliklinik im Dr. von Haunerschen Kinderspital am Klinikum der Universität, Neonatologie der Kinderklinik am Perinatalzentrum der LMU München, Campus Großhadern, München
| | - C Huebener
- Klinik und Poliklinik für Frauenheilkunde und Geburtshilfe am Klinikum der Universität, Perinatalzentrum der LMU München, Campus Großhadern, München
| | - U Hasbargen
- Klinik und Poliklinik für Frauenheilkunde und Geburtshilfe am Klinikum der Universität, Perinatalzentrum der LMU München, Campus Großhadern, München
| | - C Schmitz
- Herzchirurgische Klinik und Poliklinik am Klinikum der Universität, München
| | - R Schramm
- Herzchirurgische Klinik und Poliklinik am Klinikum der Universität, München
| | - M Lehner
- Kinderchirurgische Klinik und Poliklinik im Dr. von Haunerschen Kinderspital am Klinikum der Universität, München
| | - M Stehr
- Klinik für Kinderchirurgie und Kinderurologie, Cnopf'sche Kinderklinik/Klinik Hallerwiese, Nürnberg
| | - A Schulze
- Kinderklinik und Kinderpoliklinik im Dr. von Haunerschen Kinderspital am Klinikum der Universität, Neonatologie der Kinderklinik am Perinatalzentrum der LMU München, Campus Großhadern, München
| | - A W Flemmer
- Kinderklinik und Kinderpoliklinik im Dr. von Haunerschen Kinderspital am Klinikum der Universität, Neonatologie der Kinderklinik am Perinatalzentrum der LMU München, Campus Großhadern, München
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Studer D, Hasler CC, Schulze A. [Treatment of early onset scoliosis : How far can we go?]. Orthopade 2015; 44:896-904. [PMID: 26345169 DOI: 10.1007/s00132-015-3163-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
BACKGROUND Recently, inconsistent definitions of early onset scoliosis (EOS) and a wide variety of treatment options have been observed. OBJECTIVES To clearly define the term EOS, to depict non-operative and operative treatment options, and to present the limitations of the boundaries of these techniques. METHODS Review of the literature, including conference presentations and expert opinions, in addition to personal experiences. RESULTS Early onset scoliosis (EOS) refers to spine deformity that is present before 10 years of age, regardless of etiology. All existing operative treatment options share a high risk of complications. Therefore, non-operative treatment should act as a time-buying approach to postpone surgery. DISCUSSION Awareness of treatment options and their specific indications, in addition to respecting each patient's individual needs and feasibilities, are crucial for the optimal outcome.
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Affiliation(s)
- D Studer
- Universitätskinderspital beider Basel, Spitalstrasse 33, 4056, Basel, Schweiz.
| | - C C Hasler
- Universitätskinderspital beider Basel, Spitalstrasse 33, 4056, Basel, Schweiz
| | - A Schulze
- Universitätskinderspital beider Basel, Spitalstrasse 33, 4056, Basel, Schweiz
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Eyben P, Bisiaux P, Schulze A, Nazir A, Vandervorst W. Fast Fourier transform scanning spreading resistance microscopy: a novel technique to overcome the limitations of classical conductive AFM techniques. Nanotechnology 2015; 26:355702. [PMID: 26245715 DOI: 10.1088/0957-4484/26/35/355702] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
A new atomic force microscopy (AFM)-based technique named fast Fourier transform scanning spreading-resistance microscopy (FFT-SSRM) has been developed. FFT-SSRM offers the ability to isolate the local spreading resistance (Sr) from the parasitic series resistance (probe, bulk, and back contact). The parasitic series resistance limits the use of classical SSRM in confined volumes and on very highly doped materials, two increasingly important situations in nanoelectronic components. This is realized via a force modulation at controlled frequency (affecting the SR component) and the extraction of the resistance amplitude at the modulation frequency, performing an FFT-based lock-in deconvolution. A systematic evaluation of the FFT-SSRM performances (i.e., resolution, dynamic range, sensitivity, and repeatability) is presented. The impact of various parameters (i.e., modulation frequency and amplitude or cutoff frequency of the current amplifier) on the performances of FFT-SSRM has been evaluated. We demonstrate the possibility to overcome sensitivity losses due to tip saturation in highly doped material and the utility of the technique in two different structures, presenting isolated and confined volumes.
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Affiliation(s)
- P Eyben
- IMEC, Kapeldreef 75, B-3001, Leuven, Belgium
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49
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Thiel A, Schetelig J, Pönisch W, Schäfer-Eckart K, Aulitzky W, Peter N, Schulze A, Maschmeyer G, Neugebauer S, Herbst R, Hänel A, Morgner A, Kroschinsky F, Bornhäuser M, Lange T, Wilhelm M, Niederwieser D, Ehninger G, Fiedler F, Hänel M. Mito-FLAG with Ara-C as bolus versus continuous infusion in recurrent or refractory AML—long-term results of a prospective randomized intergroup study of the East German Study Group Hematology/Oncology (OSHO) and the Study Alliance Leukemia (SAL). Ann Oncol 2015; 26:1434-40. [DOI: 10.1093/annonc/mdv205] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2014] [Accepted: 04/21/2015] [Indexed: 11/13/2022] Open
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Lamparter J, Schulze A, Riedel J, Wasielica-Poslednik J, König J, Pfeiffer N, Hoffmann EM. Peripapillary Choroidal Thickness and Choroidal Area in Glaucoma, Ocular Hypertension and Healthy Subjects by SD-OCT. Klin Monbl Augenheilkd 2015; 232:390-4. [PMID: 25902084 DOI: 10.1055/s-0035-1545819] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
BACKGROUND The exact pathogenesis of open angle glaucoma and ocular hypertension remains unclear. Hemodynamic influences are discussed as potential risk factors and the choroid may play an important role in the pathogenesis of open angle glaucoma or ocular hypertension. The current study investigates peripapillary choroidal thickness and choroidal area in patients with open angle glaucoma, subjects with ocular hypertension and healthy subjects using spectral-domain OCT. It furthermore assesses the association between peripapillary choroidal thickness and age, central corneal thickness, refractive error and intraocular pressure. PATIENTS AND METHODS Prospectively recorded data of 213 eyes of 177 open angle glaucoma patients, 73 eyes of 50 subjects with ocular hypertension and 152 eyes of 116 healthy control subjects were analyzed by fitting a linear mixed model including age and disease. RESULTS Peripapillary choroidal thickness was thinnest in glaucoma patients (125 µm), followed by healthy subjects (127 µm) and ocular hypertensive subjects (135 µm). A marginally significant difference was present between ocular hypertension and glaucoma (p=0.059). Thickest choroids were found superiorly and thinnest choroids inferiorly. Choroidal area was highest in the supero-nasal and lowest in the infero-temporal sectors. Choroidal thickness decreased with age, no significant correlation was evident between peripapillary choroidal thickness and refractive error or intraocular pressure. Peripapillary choroidal thickness and central corneal thickness are significantly negative correlated in healthy subjects. CONCLUSIONS There is a trend towards thicker choroids in ocular hypertensive subjects compared to healthy subjects or glaucoma patients. Thickest choroids are found superiorly, thinnest inferiorly. Interestingly, choroidal area is thinnest in the temporal-inferior sector, one of the regions where glaucomatous damage tends to start.
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Affiliation(s)
- J Lamparter
- Department of Ophthalmology, University Medical Centre of the Johannes Gutenberg-University Mainz, Mainz (Head of Department: Prof. Dr. med. Norbert Pfeiffer)
| | - A Schulze
- Department of Ophthalmology, University Medical Centre of the Johannes Gutenberg-University Mainz, Mainz (Head of Department: Prof. Dr. med. Norbert Pfeiffer)
| | - J Riedel
- Department of Ophthalmology, University Medical Centre of the Johannes Gutenberg-University Mainz, Mainz (Head of Department: Prof. Dr. med. Norbert Pfeiffer)
| | - J Wasielica-Poslednik
- Department of Ophthalmology, University Medical Centre of the Johannes Gutenberg-University Mainz, Mainz (Head of Department: Prof. Dr. med. Norbert Pfeiffer)
| | - J König
- Institute of Medical Biostatistics, Epidemiology and Informatics (IMBEI), University Medical Centre of the Johannes Gutenberg University Mainz, Mainz (Head of Department: Prof. Dr. rer. nat. Maria Blettner)
| | - N Pfeiffer
- Department of Ophthalmology, University Medical Centre of the Johannes Gutenberg-University Mainz, Mainz (Head of Department: Prof. Dr. med. Norbert Pfeiffer)
| | - E M Hoffmann
- Department of Ophthalmology, University Medical Centre of the Johannes Gutenberg-University Mainz, Mainz (Head of Department: Prof. Dr. med. Norbert Pfeiffer)
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