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Bender C, Müller P, Tondello C, Horn J, Holdener M, Lasch S, Bayer M, Pfeilschifter JM, Tacke F, Ludwig A, Hansmann ML, Döring C, Hintermann E, Christen U. Gene-expression profiling of laser-dissected islets and studies in deficient mice reveal chemokines as differential driving force of type 1 diabetes. J Autoimmun 2024; 143:103161. [PMID: 38141419 DOI: 10.1016/j.jaut.2023.103161] [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] [Received: 10/03/2023] [Revised: 11/22/2023] [Accepted: 12/12/2023] [Indexed: 12/25/2023]
Abstract
Although type 1 diabetes (T1D) results from the autoimmune destruction of the insulin-producing β-cells, its treatment is largely restricted to exogenous insulin administration. Only few therapies targeting the autoaggressive immune system have been introduced into clinical practice or are considered in clinical trials. Here, we provide a gene expression profile of the islet microenvironment obtained by laser-dissection microscopy in an inducible mouse model. Thereby, we have identified novel targets for immune intervention. Increased gene expression of most inflammatory proteins was apparent at day 10 after T1D induction and largely paralleled the observed degree of insulitis. We further focused on genes involved in leukocyte migration, including chemokines and their receptors. Besides the critical chemokine CXCL10, we found several other chemokines upregulated locally in temporary or chronic manner. Localization of the chemokine ligand/receptor pairs to the islet microenvironment has been confirmed by RNAscope. Interference with the CXCL16-CXCR6 and CX3CL1-CX3CR1 axes, but not the CCL5-CCR1/3/5 axis, resulted in reduced insulitis and lower T1D incidence. Further, we found that the receptors for the differentially expressed chemokines CXCL10, CXCL16 and CX3CL1 are distributed unevenly among islet autoantigen-specific T cells, which explains why the interference with just one chemokine axis cannot completely abrogate insulitis and T1D.
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Affiliation(s)
- Christine Bender
- Institute for Pharmacology and Toxicology Pharmazentrum Frankfurt / ZAFES, Goethe University Frankfurt, Frankfurt am Main, Germany
| | - Peter Müller
- Institute for Pharmacology and Toxicology Pharmazentrum Frankfurt / ZAFES, Goethe University Frankfurt, Frankfurt am Main, Germany
| | - Camilla Tondello
- Institute for Pharmacology and Toxicology Pharmazentrum Frankfurt / ZAFES, Goethe University Frankfurt, Frankfurt am Main, Germany
| | - Jessica Horn
- Institute for Pharmacology and Toxicology Pharmazentrum Frankfurt / ZAFES, Goethe University Frankfurt, Frankfurt am Main, Germany
| | - Martin Holdener
- Institute for Pharmacology and Toxicology Pharmazentrum Frankfurt / ZAFES, Goethe University Frankfurt, Frankfurt am Main, Germany
| | - Stanley Lasch
- Institute for Pharmacology and Toxicology Pharmazentrum Frankfurt / ZAFES, Goethe University Frankfurt, Frankfurt am Main, Germany
| | - Monika Bayer
- Institute for Pharmacology and Toxicology Pharmazentrum Frankfurt / ZAFES, Goethe University Frankfurt, Frankfurt am Main, Germany
| | - Josef M Pfeilschifter
- Institute for Pharmacology and Toxicology Pharmazentrum Frankfurt / ZAFES, Goethe University Frankfurt, Frankfurt am Main, Germany
| | - Frank Tacke
- Charité - Universitätsmedizin Berlin, Department of Hepatology and Gastroenterology, Campus Virchow-Klinikum (CVK) and Campus Charité Mitte (CCM), Berlin, Germany
| | - Andreas Ludwig
- Institute of Molecular Pharmacology, University Hospital, RWTH Aachen, Aachen, Germany
| | - Martin-Leo Hansmann
- Dr. Senckenberg Institute of Pathology, University Hospital Frankfurt, Frankfurt am Main, Germany
| | - Claudia Döring
- Dr. Senckenberg Institute of Pathology, University Hospital Frankfurt, Frankfurt am Main, Germany
| | - Edith Hintermann
- Institute for Pharmacology and Toxicology Pharmazentrum Frankfurt / ZAFES, Goethe University Frankfurt, Frankfurt am Main, Germany
| | - Urs Christen
- Institute for Pharmacology and Toxicology Pharmazentrum Frankfurt / ZAFES, Goethe University Frankfurt, Frankfurt am Main, Germany.
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Ylescupidez A, Speake C, Pietropaolo SL, Wilson DM, Steck AK, Sherr JL, Gaglia JL, Bender C, Lord S, Greenbaum CJ. OGTT Metrics Surpass Continuous Glucose Monitoring Data for T1D Prediction in Multiple-Autoantibody-Positive Individuals. J Clin Endocrinol Metab 2023; 109:57-67. [PMID: 37572381 PMCID: PMC10735531 DOI: 10.1210/clinem/dgad472] [Citation(s) in RCA: 2] [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: 06/22/2023] [Revised: 08/02/2023] [Accepted: 08/08/2023] [Indexed: 08/14/2023]
Abstract
CONTEXT The value of continuous glucose monitoring (CGM) for monitoring autoantibody (AAB)-positive individuals in clinical trials for progression of type 1 diabetes (T1D) is unknown. OBJECTIVE Compare CGM with oral glucose tolerance test (OGTT)-based metrics in prediction of T1D. METHODS At academic centers, OGTT and CGM data from multiple-AAB relatives were evaluated for associations with T1D diagnosis. Participants were multiple-AAB-positive individuals in a TrialNet Pathway to Prevention (TN01) CGM ancillary study (n = 93). The intervention was CGM for 1 week at baseline, 6 months, and 12 months. Receiver operating characteristic (ROC) curves of CGM and OGTT metrics for prediction of T1D were analyzed. RESULTS Five of 7 OGTT metrics and 29/48 CGM metrics but not HbA1c differed between those who subsequently did or did not develop T1D. ROC area under the curve (AUC) of individual CGM values ranged from 50% to 69% and increased when adjusted for age and AABs. However, the highest-ranking metrics were derived from OGTT: 4/7 with AUC ∼80%. Compared with adjusted multivariable models using CGM data, OGTT-derived variables, Index60 and DPTRS (Diabetes Prevention Trial-Type 1 Risk Score), had higher discriminative ability (higher ROC AUC and positive predictive value with similar negative predictive value). CONCLUSION Every 6-month CGM measures in multiple-AAB-positive individuals are predictive of subsequent T1D, but less so than OGTT-derived variables. CGM may have feasibility advantages and be useful in some settings. However, our data suggest there is insufficient evidence to replace OGTT measures with CGM in the context of clinical trials.
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Affiliation(s)
- Alyssa Ylescupidez
- Center for Interventional Immunology and Diabetes Program, Benaroya Research Institute, Seattle, WA 98101, USA
| | - Cate Speake
- Center for Interventional Immunology and Diabetes Program, Benaroya Research Institute, Seattle, WA 98101, USA
| | - Susan L Pietropaolo
- Division of Endocrinology, Diabetes, and Metabolism, Department of Medicine, Baylor College of Medicine, Houston, TX 77030, USA
| | - Darrell M Wilson
- Division of Pediatric Endocrinology, Stanford University School of Medicine, Palo Alto, CA 94304, USA
| | - Andrea K Steck
- Barbara Davis Center for Diabetes, University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA
| | - Jennifer L Sherr
- Division of Pediatric Endocrinology, Yale University School of Medicine, New Haven, CT 06511, USA
| | - Jason L Gaglia
- Joslin Diabetes Center, Harvard Medical School, Boston, MA 02215, USA
| | - Christine Bender
- Center for Interventional Immunology and Diabetes Program, Benaroya Research Institute, Seattle, WA 98101, USA
| | - Sandra Lord
- Center for Interventional Immunology and Diabetes Program, Benaroya Research Institute, Seattle, WA 98101, USA
| | - Carla J Greenbaum
- Center for Interventional Immunology and Diabetes Program, Benaroya Research Institute, Seattle, WA 98101, USA
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O’Rourke C, Ylescupidez A, Bahnson HT, Bender C, Speake C, Lord S, Greenbaum CJ. Risk Modeling to Reduce Monitoring of an Autoantibody-Positive Population to Prevent DKA at Type 1 Diabetes Diagnosis. J Clin Endocrinol Metab 2023; 108:688-696. [PMID: 36227635 PMCID: PMC10210620 DOI: 10.1210/clinem/dgac594] [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: 07/08/2022] [Revised: 10/07/2022] [Indexed: 11/19/2022]
Abstract
CONTEXT The presence of islet autoimmunity identifies individuals likely to progress to clinical type 1 diabetes (T1D). In clinical research studies, autoantibody screening followed by regular metabolic monitoring every 6 months reduces incidence of diabetic ketoacidosis (DKA) at diagnosis. OBJECTIVE We hypothesized that DKA reduction can be achieved on a population basis with a reduced frequency of metabolic monitoring visits. We reasoned that prolonged time between the development of T1D and the time of clinical diagnosis ("undiagnosed time") would more commonly result in DKA and thus that limiting undiagnosed time would decrease DKA. METHODS An analysis was conducted of data from TrialNet's Pathway to Prevention (PTP), a cross-sectional longitudinal study that identifies and follows at-risk relatives of people with T1D. PTP is a population-based study enrolling across multiple countries. A total of 6193 autoantibody (AAB)-positive individuals participated in PTP from March 2004 to April 2019. We developed models of progression to clinical diagnosis for pediatric and adult populations with single or multiple AAB, and summarized results using estimated hazard rate. An optimal monitoring visit schedule was determined for each model to achieve a minimum average level of undiagnosed time for each population. RESULTS Halving the number of monitoring visits usually conducted in research studies is likely to substantially lower the population incidence of DKA at diagnosis of T1D. CONCLUSION Our study has clinical implications for the metabolic monitoring of at-risk individuals. Fewer monitoring visits would reduce the clinical burden, suggesting a path toward transitioning monitoring beyond the research setting.
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Affiliation(s)
- Colin O’Rourke
- Center for Interventional Immunology, Benaroya Research Institute at Virginia Mason, Seattle, Washington 98101, USA
| | - Alyssa Ylescupidez
- Center for Interventional Immunology, Benaroya Research Institute at Virginia Mason, Seattle, Washington 98101, USA
| | - Henry T Bahnson
- Center for Interventional Immunology, Benaroya Research Institute at Virginia Mason, Seattle, Washington 98101, USA
| | - Christine Bender
- Center for Interventional Immunology, Benaroya Research Institute at Virginia Mason, Seattle, Washington 98101, USA
| | - Cate Speake
- Center for Interventional Immunology, Benaroya Research Institute at Virginia Mason, Seattle, Washington 98101, USA
| | - Sandra Lord
- Center for Interventional Immunology, Benaroya Research Institute at Virginia Mason, Seattle, Washington 98101, USA
| | - Carla J Greenbaum
- Center for Interventional Immunology, Benaroya Research Institute at Virginia Mason, Seattle, Washington 98101, USA
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Rodriguez-Calvo T, Christoffersson G, Bender C, von Herrath MG, Mallone R, Kent SC, James EA. Means, Motive, and Opportunity: Do Non-Islet-Reactive Infiltrating T Cells Contribute to Autoimmunity in Type 1 Diabetes? Front Immunol 2021; 12:683091. [PMID: 34220832 PMCID: PMC8242234 DOI: 10.3389/fimmu.2021.683091] [Citation(s) in RCA: 4] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2021] [Accepted: 05/28/2021] [Indexed: 12/02/2022] Open
Abstract
In human type 1 diabetes and animal models of the disease, a diverse assortment of immune cells infiltrates the pancreatic islets. CD8+ T cells are well represented within infiltrates and HLA multimer staining of pancreas sections provides clear evidence that islet epitope reactive T cells are present within autoimmune lesions. These bona fide effectors have been a key research focus because these cells represent an intellectually attractive culprit for β cell destruction. However, T cell receptors are highly diverse in human insulitis. This suggests correspondingly broad antigen specificity, which includes a majority of T cells for which there is no evidence of islet-specific reactivity. The presence of “non-cognate” T cells in insulitis raises suspicion that their role could be beyond that of an innocent bystander. In this perspective, we consider the potential pathogenic contribution of non-islet-reactive T cells. Our intellectual framework will be that of a criminal investigation. Having arraigned islet-specific CD8+ T cells for the murder of pancreatic β cells, we then turn our attention to the non-target immune cells present in human insulitis and consider the possible regulatory, benign, or effector roles that they may play in disease. Considering available evidence, we overview the case that can be made that non-islet-reactive infiltrating T cells should be suspected as co-conspirators or accessories to the crime and suggest some possible routes forward for reaching a better understanding of their role in disease.
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Affiliation(s)
- Teresa Rodriguez-Calvo
- Institute of Diabetes Research, Helmholtz Zentrum München, German Research Center for Environmental Health, Munich-Neuherberg, Germany.,German Center for Diabetes Research (DZD), Neuherberg, Germany
| | - Gustaf Christoffersson
- Science for Life Laboratory, Uppsala University, Uppsala, Sweden.,Department of Medical Cell Biology, Uppsala University, Uppsala, Sweden
| | - Christine Bender
- Center for Autoimmunity and Inflammation, Type 1 Diabetes Center at La Jolla Institute for Immunology, La Jolla, CA, United States
| | - Matthias G von Herrath
- Center for Autoimmunity and Inflammation, Type 1 Diabetes Center at La Jolla Institute for Immunology, La Jolla, CA, United States
| | - Roberto Mallone
- Université de Paris, Institut Cochin, CNRS, INSERM, Paris, France.,Assistance Publique Hôpitaux de Paris, Cochin Hospital, Service de Diabétologie et Immunologie Clinique, Paris, France
| | - Sally C Kent
- Department of Medicine, Division of Diabetes, Diabetes Center of Excellence, University of Massachusetts Medical School, Worcester, MA, United States
| | - Eddie A James
- Translatonal Research Program, Benaroya Research Institute, Seattle WA, United States
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Bender C, Rodriguez-Calvo T, Amirian N, Coppieters KT, von Herrath MG. The healthy exocrine pancreas contains preproinsulin-specific CD8 T cells that attack islets in type 1 diabetes. Sci Adv 2020; 6:6/42/eabc5586. [PMID: 33067232 PMCID: PMC7567597 DOI: 10.1126/sciadv.abc5586] [Citation(s) in RCA: 36] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/30/2020] [Accepted: 09/03/2020] [Indexed: 05/03/2023]
Abstract
Preproinsulin (PPI) is presumably a crucial islet autoantigen found in patients with type 1 diabetes (T1D) but is also recognized by CD8+ T cells from healthy individuals. We quantified PPI-specific CD8+ T cells within different areas of the human pancreas from nondiabetic controls, autoantibody-positive donors, and donors with T1D to investigate their role in diabetes development. This spatial cellular quantitation revealed unusually high frequencies of autoreactive CD8+ T cells supporting the hypothesis that PPI is indeed a key autoantigen. To our surprise, PPI-specific CD8+ T cells were already abundantly present in the nondiabetic pancreas, thus questioning the dogma that T1D is caused by defective thymic deletion or systemic immune dysregulation. During T1D development, these cells accumulated in and around islets, indicating that an islet-specific trigger such as up-regulation of major histocompatibility complex class I might be essential to unmask beta cells to the immune system.
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Affiliation(s)
- Christine Bender
- Center for Type 1 Diabetes Research, La Jolla Institute for Immunology, La Jolla, CA, USA
| | - Teresa Rodriguez-Calvo
- Center for Type 1 Diabetes Research, La Jolla Institute for Immunology, La Jolla, CA, USA
- The Helmholtz Zentrum Muenchen, German Research Center for Environmental Health, Institute of Diabetes Research, Munich-Neuherberg, Germany
| | - Natalie Amirian
- Center for Type 1 Diabetes Research, La Jolla Institute for Immunology, La Jolla, CA, USA
| | - Ken T Coppieters
- Global Research Project Management, Novo Nordisk, Måløv, Denmark
| | - Matthias G von Herrath
- Center for Type 1 Diabetes Research, La Jolla Institute for Immunology, La Jolla, CA, USA.
- The Novo Nordisk Research Center Seattle Inc., Seattle, WA, USA
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Bender C, Rajendran S, von Herrath MG. New Insights Into the Role of Autoreactive CD8 T Cells and Cytokines in Human Type 1 Diabetes. Front Endocrinol (Lausanne) 2020; 11:606434. [PMID: 33469446 PMCID: PMC7813992 DOI: 10.3389/fendo.2020.606434] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/14/2020] [Accepted: 11/20/2020] [Indexed: 12/31/2022] Open
Abstract
Since the establishment of the network for pancreatic organ donors with diabetes (nPOD), we have gained unprecedented insight into the pathology of human type 1 diabetes. Many of the pre-existing "dogmas", mostly derived from studies of animal models and sometimes limited human samples, have to be revised now. For example, we have learned that autoreactive CD8 T cells are present even in healthy individuals within the exocrine pancreas. Furthermore, their "attraction" to islets probably relies on beta-cell intrinsic events, such as the over-expression of MHC class I and resulting presentation of autoantigens such as (prepro)insulin. In addition, we are discovering other signs of beta-cell dysfunction, possibly at least in part due to stress, such as the over-expression of certain cytokines. This review summarizes the latest developments focusing on cytokines and autoreactive CD8 T cells in human type 1 diabetes pathogenesis.
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Nugent BD, Ren D, Bender C, Rosenzweig M. Abstract P1-17-10: The impact of age and adjuvant chemotherapy modifications on disease-free and overall survival among African American women with breast cancer. Cancer Res 2019. [DOI: 10.1158/1538-7445.sabcs18-p1-17-10] [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: 11/16/2022]
Abstract
Abstract
Background: During chemotherapy for breast cancer, African American women receive less relative dose intensity with more dose reductions and early chemotherapy cessation compared to Caucasian women. Other research has found that older breast cancer patients are most at risk for treatment modifications; however, it is unclear if this remains true for African American patients. Furthermore, the clinical implications of treatment modifications and delays on survival is uncertain, particularly in African American patients.
Purpose: The purpose of this study was to investigate whether age (diagnosis <55 vs. diagnosis ≥55) was a moderator for the association between treatment modifications (dose held, dose delayed, and early cessation) and overall survival (OS) and disease-free survival (DFS) in African American women with breast cancer.
Methods: A retrospective cohort study of early stage African American breast cancer patients treated with adjuvant chemotherapy was employed. Dose held, dose delayed and early cessation were examined as dichotomous variables: any adjustment to the initially prescribed treatment plan was considered a modification. Medical record data extraction was utilized to gather this information. The sample was divided into two groups: those diagnosed <55 years of age and those diagnosed ≥55 years of age. A Cox's proportional hazards regression model was used to examine the interaction between age group and treatment modifications for OS and DFS, while controlling for stage and ER and HER2 status.
Results: In the study of 115 participants, 58 (50.4%) were diagnosed before the age of 55, and 57 (49.6%) were diagnosed age 55 or older. Across the entire sample, 43 (37.4%) patients experienced a treatment modification. There were no significant differences in the proportions of treatment modifications between the two age groups. We found no interaction between age group and treatment modifications for OS. However, there was a significant interaction between age group and held dose for DFS (p=0.045). Specifically, those diagnosed at 55 years of age and older, who had doses of chemotherapy held, experienced worse DFS compared to those who did not (hazard ratio (HR)=3.390, 95% CI (1.013,11.34)). In contrast, there was no difference in DFS between those who did and did not have doses held in patients diagnosed below 55 years of age (HR=0.563, 95%CI (0.159, 1.986)).
Conclusions: African American women receiving adjuvant chemotherapy for treatment of early stage breast cancer have high levels of treatment modifications across all age groups. However, held doses of chemotherapy in older African American patients were associated with worse DFS. Further research is needed to elucidate the clinical implications of adjuvant chemotherapy treatment modifications, particularly in African American patients, and the subgroups of patients who are at greatest risk.
Citation Format: Nugent BD, Ren D, Bender C, Rosenzweig M. The impact of age and adjuvant chemotherapy modifications on disease-free and overall survival among African American women with breast cancer [abstract]. In: Proceedings of the 2018 San Antonio Breast Cancer Symposium; 2018 Dec 4-8; San Antonio, TX. Philadelphia (PA): AACR; Cancer Res 2019;79(4 Suppl):Abstract nr P1-17-10.
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Affiliation(s)
- BD Nugent
- University of Pittsburgh, Pittsburgh, PA
| | - D Ren
- University of Pittsburgh, Pittsburgh, PA
| | - C Bender
- University of Pittsburgh, Pittsburgh, PA
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Montaner-Pizá A, Rubio B, Mücher D, Orrigo S, Simpson E, Gelletly W, Agramunt J, Algora A, Bender C, Fujita Y, Ganioglu E, Guadilla V, Hellgartner S, Reichert S. New Results on Excited States in the one-particle one-hole nucleus 56Co measured with MINIBALL detectors. EPJ Web Conf 2019. [DOI: 10.1051/epjconf/201922301042] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
The non-yrast states of the odd-odd nucleus 56Co have been investigated by studying the γ-rays induced in the predominantly fusion-evaporation reaction 56Fe(p,n γ)56Co at an incident energy of 10 MeV. The γ-rays were measured in-beam with four high-resolution MINIBALL-triple germanium (Ge) detectors. The experiment provided excellent data in γ-γ coincidences. The complex level scheme of 56Co was constructed mainly based on the analysis of these γ-γ coincidences. The angular distributions of the γ-rays were also analysed and allowed us to assign spin-parity values to most of the excited states in this nucleus. Despite the extensive work previously done studying the 56Co nucleus, the analysis presented in this work has resulted in a large improvement in the knowledge of its structure.
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Kuner R, Laible M, Gangi-Maurici S, Walter C, Bender C, Schaefer G, Klocker H, Oed M, Bukur V, Sahin U. PO-324 Detection of high-risk prostate cancer biomarkers by RNA sequencing and qPCR method. ESMO Open 2018. [DOI: 10.1136/esmoopen-2018-eacr25.354] [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: 11/04/2022] Open
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Bender C, Gillespie H, Markham A. Medial Foot Pain in a Youth Soccer Player. Med Sci Sports Exerc 2017. [DOI: 10.1249/01.mss.0000518816.34603.f2] [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: 11/21/2022]
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Bender C, Dexter WW, Haskins A, Holt C. Utilization of Emergency Department Services. Med Sci Sports Exerc 2017. [DOI: 10.1249/01.mss.0000520028.06410.8f] [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: 11/21/2022]
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Dexter WW, Bender C. Web Alert. Curr Sports Med Rep 2017. [DOI: 10.1249/jsr.0000000000000371] [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: 11/21/2022]
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Bender C, Christen S, Scholich K, Bayer M, Pfeilschifter JM, Hintermann E, Christen U. Islet-Expressed CXCL10 Promotes Autoimmune Destruction of Islet Isografts in Mice With Type 1 Diabetes. Diabetes 2017; 66:113-126. [PMID: 27797910 DOI: 10.2337/db16-0547] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/28/2016] [Accepted: 10/21/2016] [Indexed: 11/13/2022]
Abstract
Type 1 diabetes (T1D) results from the autoimmune destruction of insulin-producing β-cells in the pancreas. Thereby, the chemokine CXC-motif ligand 10 (CXCL10) plays an important role in the recruitment of autoaggressive lymphocytes to the islets of Langerhans. Transplantation of isolated islets as a promising therapy for T1D has been hampered by early graft rejection. Here, we investigated the influence of CXCL10 on the autoimmune destruction of islet isografts using RIP-LCMV mice expressing a lymphocytic choriomeningitis virus (LCMV) protein in the β-cells. RIP-LCMV islets express CXCL10 after isolation and maintain CXCL10 production after engraftment. Thus, we isolated islets from either normal or CXCL10-deficient RIP-LCMV mice and transferred them under the kidney capsule of diabetic RIP-LCMV mice. We found that the autoimmune destruction of CXCL10-deficient islet isografts was significantly reduced. The autoimmune destruction was also diminished in mice administered with an anti-CXCL10 antibody. The persistent protection from autoimmune destruction was paralleled by an increase in FoxP3+ regulatory T cells within the cellular infiltrates around the islet isografts. Consequently, CXCL10 might influence the cellular composition locally in the islet graft, thereby playing a role in the autoimmune destruction. CXCL10 might therefore constitute a potential therapeutic target to prolong islet graft survival.
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Affiliation(s)
- Christine Bender
- Institute for Pharmacology and Toxicology, Pharmazentrum Frankfurt/Center for Drug Research, Development, and Safety (ZAFES), Goethe University Hospital Frankfurt, Frankfurt am Main, Germany
| | - Selina Christen
- Institute for Pharmacology and Toxicology, Pharmazentrum Frankfurt/Center for Drug Research, Development, and Safety (ZAFES), Goethe University Hospital Frankfurt, Frankfurt am Main, Germany
| | - Klaus Scholich
- Institute for Clinical Pharmacology, Pharmazentrum Frankfurt/Center for Drug Research, Development, and Safety (ZAFES), Goethe University Hospital Frankfurt, Frankfurt am Main, Germany
| | - Monika Bayer
- Institute for Pharmacology and Toxicology, Pharmazentrum Frankfurt/Center for Drug Research, Development, and Safety (ZAFES), Goethe University Hospital Frankfurt, Frankfurt am Main, Germany
| | - Josef M Pfeilschifter
- Institute for Pharmacology and Toxicology, Pharmazentrum Frankfurt/Center for Drug Research, Development, and Safety (ZAFES), Goethe University Hospital Frankfurt, Frankfurt am Main, Germany
| | - Edith Hintermann
- Institute for Pharmacology and Toxicology, Pharmazentrum Frankfurt/Center for Drug Research, Development, and Safety (ZAFES), Goethe University Hospital Frankfurt, Frankfurt am Main, Germany
| | - Urs Christen
- Institute for Pharmacology and Toxicology, Pharmazentrum Frankfurt/Center for Drug Research, Development, and Safety (ZAFES), Goethe University Hospital Frankfurt, Frankfurt am Main, Germany
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Winkler JK, Bender C, Kratochwil C, Enk A, Hassel JC. PD-1 blockade: a therapeutic option for treatment of metastatic Merkel cell carcinoma. Br J Dermatol 2016; 176:216-219. [PMID: 27038231 DOI: 10.1111/bjd.14632] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/29/2016] [Indexed: 12/18/2022]
Abstract
The immune system is extremely important in the development and progression of Merkel cell carcinoma (MCC). Immune checkpoint blockade has recently been shown to enable efficacious treatment of a variety of tumours. We report the use of an anti-programmed death receptor 1 (PD-1) antibody for treatment of a patient with metastatic MCC. An 80-year-old patient with metastatic MCC received off-label treatment with the anti-PD-1 antibody pembrolizumab after the disease had progressed during therapy with oral etoposide. A positron emission tomography (PET) computed tomography scan performed after three cycles of pembrolizumab revealed responses to therapy with reduced size of the adrenal gland metastases and less PET activity in the adrenal gland and lymph node metastases. Treatment was resumed owing to disease progression after a treatment-free interval of > 4 months. During subsequent months of treatment, the size of the metastases stabilized and uptake of nuclide by all tumour sites once again decreased. These results reveal the potential efficacy of an anti-PD-1 antibody for treatment of metastatic MCC. Thus, they contribute to currently limited data on the use of anti-PD-1 antibodies for the treatment of MCC. Moreover, this is the first report of successful resumption of treatment of metastatic MCC with an anti-PD-1 antibody. Results from ongoing trials will contribute to determination of the relevance of PD-1 blockade in metastatic MCC.
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Affiliation(s)
- J K Winkler
- Department of Dermatology and National Center for Tumor Diseases (NCT), University Hospital Heidelberg, Heidelberg, Germany
| | - C Bender
- Department of Dermatology and National Center for Tumor Diseases (NCT), University Hospital Heidelberg, Heidelberg, Germany
| | - C Kratochwil
- Department of Nuclear Medicine, Heidelberg, Germany
| | - A Enk
- Department of Dermatology and National Center for Tumor Diseases (NCT), University Hospital Heidelberg, Heidelberg, Germany
| | - J C Hassel
- Department of Dermatology and National Center for Tumor Diseases (NCT), University Hospital Heidelberg, Heidelberg, Germany
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Winkler JK, Schneiderbauer R, Bender C, Sedlaczek O, Fröhling S, Penzel R, Enk A, Hassel JC. Anti-programmed cell death-1 therapy in nonmelanoma skin cancer. Br J Dermatol 2016; 176:498-502. [PMID: 27061826 DOI: 10.1111/bjd.14664] [Citation(s) in RCA: 68] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- J K Winkler
- Department of Dermatology and National Center for Tumor Diseases (NCT), University Hospital Heidelberg, Heidelberg, Germany
| | - R Schneiderbauer
- Department of Dermatology and National Center for Tumor Diseases (NCT), University Hospital Heidelberg, Heidelberg, Germany
| | - C Bender
- Department of Dermatology and National Center for Tumor Diseases (NCT), University Hospital Heidelberg, Heidelberg, Germany
| | - O Sedlaczek
- National Center for Tumor Diseases (NCT) and German Cancer Research Center (DKFZ), Department of Diagnostic Radiology, University Hospital Heidelberg, Heidelberg, Germany
| | - S Fröhling
- National Center for Tumor Diseases (NCT) and German Cancer Research Center (DKFZ), Department of Translational Oncology, Heidelberg, Germany.,Section for Personalized Oncology, University Hospital Heidelberg, Heidelberg, Germany
| | - R Penzel
- Department of Pathology, University Hospital Heidelberg, Heidelberg, Germany
| | - A Enk
- Department of Dermatology and National Center for Tumor Diseases (NCT), University Hospital Heidelberg, Heidelberg, Germany
| | - J C Hassel
- Department of Dermatology and National Center for Tumor Diseases (NCT), University Hospital Heidelberg, Heidelberg, Germany
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Berner A, Bachmann M, Bender C, Pfeilschifter J, Christen U, Mühl H. Though Active on RINm5F Insulinoma Cells and Cultured Pancreatic Islets, Recombinant IL-22 Fails to Modulate Cytotoxicity and Disease in a Protocol of Streptozotocin-Induced Experimental Diabetes. Front Pharmacol 2016; 6:317. [PMID: 26793108 PMCID: PMC4709444 DOI: 10.3389/fphar.2015.00317] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [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: 10/10/2015] [Accepted: 12/22/2015] [Indexed: 12/12/2022] Open
Abstract
Interleukin (IL)-22 is a cytokine displaying tissue protective and pro-regenerative functions in various preclinical disease models. Anti-bacterial, pro-proliferative, and anti-apoptotic properties mediated by activation of the transcription factor signal transducer and activator of transcription (STAT)-3 are key to biological functions of this IL-10 family member. Herein, we introduce RINm5F insulinoma cells as rat β-cell line that, under the influence of IL-22, displays activation of STAT3 with induction of its downstream gene targets Socs3, Bcl3, and Reg3b. In addition, IL-22 also activates STAT1 in this cell type. To refine those observations, IL-22 biological activity was evaluated using ex vivo cultivated murine pancreatic islets. In accord with data on RINm5F cells, islet exposure to IL-22 activated STAT3 and upregulation of STAT3-inducible Socs3, Bcl3, and Steap4 was evident under those conditions. As these observations supported the hypothesis that IL-22 may exert protective functions in toxic β-cell injury, application of IL-22 was investigated in murine multiple-low-dose streptozotocin (STZ)-induced diabetes. For that purpose, recombinant IL-22 was administered thrice either immediately before and at disease onset (at d4, d6, d8) or closely thereafter (at d8, d10, d12). These two IL-22-treatment periods coincide with two early peaks of β-cell injury detectable in this model. Notably, none of the two IL-22-treatment strategies affected diabetes incidence or blood glucose levels in STZ-treated mice. Moreover, pathological changes in islet morphology analyzed 28 days after disease induction were not ameliorated by IL-22 administration. Taken together, despite being active on rat RINm5F insulinoma cells and murine pancreatic islets, recombinant IL-22 fails to protect pancreatic β-cells in the tested protocols from toxic effects of STZ and thus is unable to ameliorate disease in the widely used model of STZ-induced diabetes.
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Affiliation(s)
- Anika Berner
- Pharmazentrum Frankfurt/ZAFES, University Hospital Goethe-University Frankfurt Frankfurt am Main, Germany
| | - Malte Bachmann
- Pharmazentrum Frankfurt/ZAFES, University Hospital Goethe-University Frankfurt Frankfurt am Main, Germany
| | - Christine Bender
- Pharmazentrum Frankfurt/ZAFES, University Hospital Goethe-University Frankfurt Frankfurt am Main, Germany
| | - Josef Pfeilschifter
- Pharmazentrum Frankfurt/ZAFES, University Hospital Goethe-University Frankfurt Frankfurt am Main, Germany
| | - Urs Christen
- Pharmazentrum Frankfurt/ZAFES, University Hospital Goethe-University Frankfurt Frankfurt am Main, Germany
| | - Heiko Mühl
- Pharmazentrum Frankfurt/ZAFES, University Hospital Goethe-University Frankfurt Frankfurt am Main, Germany
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Bender C, Christen S, Hintermann E, Christen U. Absence of CXCL10 prolongs islet graft survival in an autoimmune mouse model for Type 1 Diabetes. DIABETOL STOFFWECHS 2015. [DOI: 10.1055/s-0035-1556570] [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]
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Bender C, Schlosser M, Christen U, Ziegler AG, Achenbach P. GAD autoantibody affinity in schoolchildren from the general population. Diabetologia 2014; 57:1911-8. [PMID: 24939430 DOI: 10.1007/s00125-014-3294-9] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/10/2014] [Accepted: 05/16/2014] [Indexed: 12/27/2022]
Abstract
AIMS/HYPOTHESIS Subtyping GAD autoantibody (GADA) responses using affinity measurement allows the identification of GADA-positive children with a family history of type 1 diabetes who are at risk of developing diabetes. Here, we asked whether GADA affinity is a useful marker to stratify the risk of type 1 diabetes in GADA-positive schoolchildren from the general population. METHODS GADA affinity was measured by competitive binding experiments with [(125)I]-labelled and unlabelled human 65 kDa isoform of GAD (GAD65) in sera from 97 GADA-positive children identified in the Karlsburg Type 1 Diabetes Risk Study of a general schoolchild population in north-eastern Germany. GADA epitope specificity was determined using radiobinding assays with [(35)S]-labelled GAD65/67 kDa isoform of GAD (GAD67) chimeric proteins. RESULTS GADA affinity was high, ≥ 10(10) l/mol, in 33 of 35 multiple islet autoantibody-positive children. In contrast, the affinity ranged widely among 62 single GADA-positive children (median 3.1 × 10(9) l/mol; range 5.6 × 10(6) to >4.0 × 10(11) l/mol; p < 0.0001). High-affinity GADA were associated with HLA-DRB1*03 (p = 0.02) and predominantly directed against the C-terminal and/or middle part of the GAD65 protein. At follow-up, the affinity remained relatively constant. Five of the single GADA-positive children developed additional islet autoantibodies and had high-affinity GADA. Twenty-six children progressed to type 1 diabetes; among them, 23 had GADA affinities of ≥ 10(10) l/mol before disease onset. CONCLUSIONS/INTERPRETATION Schoolchildren from the general population may develop heterogeneous GADA responses, and a high affinity can identify those GADA-positive children who are more likely to progress to type 1 diabetes.
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Affiliation(s)
- Christine Bender
- Pharmazentrum Frankfurt/ZAFES, Goethe University Hospital Frankfurt, Theodor-Stern Kai 7, 60590, Frankfurt am Main, Germany,
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Bender C, Wulff-Molder D, Vogt H, Ritschl F, Meisel M. Synthese und Kristallstruktur des Bromdifluormethyl-triphenyl- phosphoniumbromids, [(C6H5)3PCF2Br]+ Br- / Synthesis and Crystal Structure of Bromodifluoromethyl-triphenylphosphonium Bromide, [(C6H5)3PCF2Br]+ Br-. ACTA ACUST UNITED AC 2014. [DOI: 10.1515/znb-2000-0206] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
Difluorobromomethyl-triphenylphosphonium bromide [(C6H5)3PCF2Br]+ Br- (1) has been prepared by the reaction of triphenylphosphine with dibromodifluoro-methane in acetonitrile or methylene chloride. The colorless crystals are monoclinic, space group P 21/n, Z=4, a = 1067.1(2), b = 1488,5(2), c = 1178,2(2) pm, β = 95,67(3)°. The lattice contains Br- anions and [(C6H5)3PCF2Br]+ cations with a Br-Br distance of 322,33(11) pm.. For the title compound the results of AM 1, PM 3 ,and MNDO calculations are in good agreement with corresponding values determined by the X-ray analysis only in the case of PM 3.
The yellow-red [(C6H5)3PCF2Br]+ Br3
- (2) has been obtained by treating 1 with equimolar quantities of elemental bromine in methylene chloride solution.
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Affiliation(s)
- C. Bender
- Fachinstitut für Anorganische und Allgemeine Chemie, Institut für Chemie der Humboldt-Universität zu Berlin, Hessische Str. 1/2, D -10115 Berlin
| | - D. Wulff-Molder
- Fachinstitut für Anorganische und Allgemeine Chemie, Institut für Chemie der Humboldt-Universität zu Berlin, Hessische Str. 1/2, D -10115 Berlin
| | - H. Vogt
- Fachinstitut für Anorganische und Allgemeine Chemie, Institut für Chemie der Humboldt-Universität zu Berlin, Hessische Str. 1/2, D -10115 Berlin
| | - F. Ritschl
- Fachinstitut für Anorganische und Allgemeine Chemie, Institut für Chemie der Humboldt-Universität zu Berlin, Hessische Str. 1/2, D -10115 Berlin
| | - M. Meisel
- Fachinstitut für Anorganische und Allgemeine Chemie, Institut für Chemie der Humboldt-Universität zu Berlin, Hessische Str. 1/2, D -10115 Berlin
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Matthes R, Hübner NO, Bender C, Koban I, Horn S, Bekeschus S, Weltmann KD, Kocher T, Kramer A, Assadian O. Efficacy of different carrier gases for barrier discharge plasma generation compared to chlorhexidine on the survival of Pseudomonas aeruginosa embedded in biofilm in vitro. Skin Pharmacol Physiol 2014; 27:148-57. [PMID: 24434726 DOI: 10.1159/000353861] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2012] [Accepted: 06/19/2013] [Indexed: 11/19/2022]
Abstract
Because of its antimicrobial properties, nonthermal plasma could serve as an alternative to chemical antisepsis in wound treatment. Therefore, this study investigated the inactivation of biofilm-embedded Pseudomonas aeruginosa SG81 by a surface barrier-discharged (SBD) plasma for 30, 60, 150 and 300 s. In order to optimize the efficacy of the plasma, different carrier gases (argon, argon admixed with 1% oxygen, and argon with increased humidity up to approx. 80%) were tested and compared against 0.1% chlorhexidine digluconate (CHG) exposure for 600 s. The antimicrobial efficacy was determined by calculating the difference between the numbers of colony-forming units (CFU) of treated and untreated biofilms. Living bacteria were distinguished from dead by fluorescent staining and confocal laser scanning microscopy. Both SBD plasmas and CHG showed significant antimicrobial effects compared to the untreated control. However, plasma treatment led to a higher antimicrobial reduction (argon plasma 4.9 log10 CFU/cm(2), argon with admixed oxygen 3 log10 CFU/cm(2), and with increased gas humidity 2.7 log10 CFU/cm(2) after 300 s) compared to CHG. In conclusion, SBD plasma is suitable as an alternative to CHG for inactivation of Pseudomonas aeruginosa embedded in biofilm. Further development of SBD plasma sources and research on the role of carrier gases and humidity may allow their clinical application for wound management in the future.
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Affiliation(s)
- R Matthes
- Institute for Hygiene and Environmental Medicine, University of Greifswald, Greifswald, Germany
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Korf U, Sonntag J, Bender C, Wiemann S, Aulmann S, Sinn P, Burwinkel B, Schneeweiss A, Beissbarth T. 847 Identification of a Biomarker Signature to Predict the Need for Chemotherapy in Patients With Hormone Receptor Positive Breast Cancer. Eur J Cancer 2012. [DOI: 10.1016/s0959-8049(12)71480-6] [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: 10/28/2022]
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Hamza A, Keller M, Abdel-Kawi A, Bender C, Henschen M, Zieger W. Heterotope Gravidität – Fallbericht. Z Geburtshilfe Neonatol 2011. [DOI: 10.1055/s-0031-1293285] [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: 10/15/2022]
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Balaszczuk V, Bender C, Pereno GL, Beltramino CA. Alcohol-induced neuronal death in central extended amygdala and pyriform cortex during the postnatal period of the rat. Int J Dev Neurosci 2011; 29:733-42. [PMID: 21664448 DOI: 10.1016/j.ijdevneu.2011.05.011] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2010] [Revised: 05/12/2011] [Accepted: 05/25/2011] [Indexed: 02/06/2023] Open
Abstract
Mothers who consume alcohol during pregnancy may cause a neurotoxic syndrome defined as fetal alcohol spectrum disorder (FASD) in their offspring. This disorder is characterized by reduction in brain size, cognitive deficits and emotional/social disturbances. These alterations are thought to be caused by an alcohol-induced increase in apoptosis during neurodevelopment. Little is known about neuroapoptosis in the central extended amygdala and the pyriform cortex, which are key structures in emotional/social behaviors. The goal of this study was to determine the vulnerability of neuroapoptotic alcohol effects in those areas. Rats were administered alcohol (2.5g/kg s.c. at 0 and 2h) or saline on postnatal day (PND) 7, 15 and 20. The Amino-cupric-silver technique was used to evaluate neurodegeneration and immunohistochemistry to detect activated caspases 3-8 and 9 at 2h, 4, 6, 8, 12 and 24h after drug administration. We measured blood alcohol levels each hour, from 2 to 8h post second administration of alcohol in each of the ages studied. Results showed alcohol induced apoptotic neurodegeneration in the central extended amygdala on PND 7 and 15, and pyriform cortex on PND 7, 15 and 20. These structures showed activation of caspase 3 and 9 but not of caspase 8 suggesting that alcohol-induced apoptosis could occur by the intrinsic pathway. The pharmacokinetic differences between ages did not associate with the neurodegeneration age dependence. In conclusion, these limbic areas are damaged by alcohol, and each one has their own window of vulnerability during the postnatal period. The possible implications in emotional/social features in FASD are discussed.
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Affiliation(s)
- V Balaszczuk
- Instituto de Investigación Médica Mercedes y Martín Ferreyra, Friuli, Córdoba, Argentina.
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Hülsmann H, Bender C, Rolff J, Fichtner I, Herwig R, Sültmann H, Kuner R. 333 Identification of drug-associated proteins in NSCLC xenograft models by reverse phase protein arrays. EJC Suppl 2010. [DOI: 10.1016/s1359-6349(10)72040-1] [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: 10/18/2022] Open
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Svaldi J, Bender C, Tuschen-Caffier B. Explicit memory bias for positively valenced body-related cues in women with binge eating disorder. J Behav Ther Exp Psychiatry 2010; 41:251-7. [PMID: 20199768 DOI: 10.1016/j.jbtep.2010.02.002] [Citation(s) in RCA: 13] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/27/2009] [Revised: 01/27/2010] [Accepted: 02/08/2010] [Indexed: 12/15/2022]
Abstract
Overweight women with and without binge eating disorder (BED) are characterized by a marked body dissatisfaction, which may in part be due to the negative comments about their weight. Weight-related teasing and discrimination is reported both by healthy overweight women and women with BED, whereas body dissatisfaction is markedly increased among women with BED. Therefore, a memory bias for negatively valenced body-related cues is suspected to occur as a mediating factor in women with BED. In an experimental study, 18 women with BED were compared to 18 overweight healthy female controls (HC) on a free recall task containing four word categories: positively valenced with and without body-related content and negatively valenced with and without body-related content. While both groups showed a bias towards negatively valenced shape-/weight-related words, women with BED retrieved positively valenced shape-/weight-related words significantly less often compared to overweight HC. Findings suggest that it may be the reduced ability to attend to positively valenced shape-/weight-related information, rather than the activation of negative body schemata that differentiates overweight women with BED from overweight women without BED. Results are discussed in the context of cognitive biases in the maintenance of body dissatisfaction.
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Affiliation(s)
- J Svaldi
- Department of Clinical Psychology and Psychotherapy, University of Freiburg, Engelbergerstrasse 41, 79106 Freiburg, Germany.
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Bender C, Rassetto M, de Olmos J, de Olmos S, Lorenzo A. Involvement of AMPA/kainate-excitotoxicity in MK801-induced neuronal death in the retrosplenial cortex. Neuroscience 2010; 169:720-32. [DOI: 10.1016/j.neuroscience.2010.05.007] [Citation(s) in RCA: 7] [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: 02/03/2010] [Revised: 04/22/2010] [Accepted: 05/03/2010] [Indexed: 11/16/2022]
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Hammann A, Huebner NO, Bender C, Ekkernkamp A, Hartmann B, Hinz P, Kindel E, Koban I, Koch S, Kohlmann T, Lademann J, Matthes R, Müller G, Titze R, Weltmann KD, Kramer A. Antiseptic efficacy and tolerance of tissue-tolerable plasma compared with two wound antiseptics on artificially bacterially contaminated eyes from commercially slaughtered pigs. Skin Pharmacol Physiol 2010; 23:328-32. [PMID: 20588084 DOI: 10.1159/000314724] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2010] [Accepted: 04/26/2010] [Indexed: 11/19/2022]
Abstract
AIM To compare the tissue tolerance and efficacy of two wound antiseptics with tissue-tolerable plasma (TTP) on enucleated contaminated eyes from slaughtered pigs in order to draw consequences for the use of TTP on wounds. METHOD The corneas of extracted eyes were contaminated with Staphylococcus aureus or Pseudomonas aeruginosa. One and 10 min after application of 10% povidone (PVP)-iodine and 0.04% polyhexanide, respectively, the eyes were rinsed with inactivating solution. To test TTP, the plasma pen meandered over the eyes at a speed of 30 mm/s and a distance of 5 mm; the eyes were then rinsed with balanced salt solution. The reduction factor was calculated by the difference between the logarithm of colony-forming units in the rinse before and after antisepsis or TTP application. RESULTS The efficacy of TTP (reduction factor 2.4-2.9) was significantly higher (p < 0.001) than that of PVP-iodine and polyhexanide (reduction factor 1.7-2.1). CONCLUSION TTP is more effective than the tested wound antiseptics. The lack of histological damage to the eyes of slaughtered pigs would seem to make its use as a wound antiseptic a viable alternative. In contrast to antiseptics, it supplies additional energy in the form of heat, electric fields and radicals by TTP.
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Affiliation(s)
- A Hammann
- Institute of Hygiene and Environmental Medicine, University of Greifswald, Greifswald, Germany.
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Bender C, Cavelius C, Zabel B, Kirschner J, Korinthenberg R, Henschen M. Kongenitale myotubuläre Myopathie als seltene Ursache einer postnatalen Asphyxie – Fallbeispiel. Klin Padiatr 2010. [DOI: 10.1055/s-0030-1261508] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Merzkirch C, Bender C, Lichte K, Schwanz T, Do Duc L, Henschen M. Serratia marcescens als Ursache für eine Meningoenzephalitis mit multiplen Hirnabszessen bei einem Neugeborenem. Klin Padiatr 2010. [DOI: 10.1055/s-0030-1261531] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Bender C, Neumann KY, Komini E, Enders M, Schwanz T, Henschen M. Zytomegalie (CMV) – die häufigste konnatale Infektion des Neugeborenen und doch noch ohne „State of the Art“…. Klin Padiatr 2010. [DOI: 10.1055/s-0030-1261575] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Starmann J, Blaich S, Bender C, Armbruster H, Mannsperger H, Lange B, Korf U, Sültmann H. 761 Reverse-phase protein arrays as a tool to discover mutation-associated alterations in cell signaling pathways. EJC Suppl 2010. [DOI: 10.1016/s1359-6349(10)71557-3] [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: 10/19/2022] Open
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Kienle N, Bender C, Neumann KY, Seeborg K, Kerst G, Henschen M. Hydrops fetalis –Ätiologie und Differenzialdiagnose des Hydrops am Beispiel eines Frühgeborenen der 29. SSW. Klin Padiatr 2010. [DOI: 10.1055/s-0030-1261506] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Hübner NO, Matthes R, Koban I, Rändler C, Müller G, Bender C, Kindel E, Kocher T, Kramer A. Efficacy of Chlorhexidine, Polihexanide and Tissue-Tolerable Plasma against Pseudomonas aeruginosa Biofilms Grown on Polystyrene and Silicone Materials. Skin Pharmacol Physiol 2010; 23 Suppl:28-34. [DOI: 10.1159/000318265] [Citation(s) in RCA: 75] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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de Olmos S, Bender C, de Olmos JS, Lorenzo A. Neurodegeneration and prolonged immediate early gene expression throughout cortical areas of the rat brain following acute administration of dizocilpine. Neuroscience 2009; 164:1347-59. [PMID: 19772897 DOI: 10.1016/j.neuroscience.2009.09.022] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2009] [Accepted: 09/13/2009] [Indexed: 10/20/2022]
Abstract
N-methyl-d-aspartate receptor antagonist drugs (NMDA-A), such as dizocilpine (MK801), induce long-lasting behavioral disturbances reminiscent to psychotic disorders in humans. To identify cortical structures affected by NMDA-A, we used a single dose of MK801 (10 mg/kg) that caused low and high neurodegeneration in intact and orchiectomized male rats, respectively. Degenerating somas (neuronal death) and axonal/synaptic endings (terminal degeneration) were depicted by a silver technique, and functionally affected cortical neuronal subpopulations by Egr-1, c-Fos, and FosB/DeltaFosB-immunolabeling. In intact males, MK801 triggered a c-Fos induction that remained high for more than 24 h in selected layers of the retrosplenial, somatosensory and entorhinal cortices. MK801-induced neurodegeneration reached its peak at 72 h. Degenerating somas were restricted to layer IV of the granular subdivision of the retrosplenial cortex, and were accompanied by suppression of Egr-1 immunolabeling. Terminal degeneration extended to selected layers of the retrosplenial, somatosensory and parahippocampal cortices, which are target areas of retrosplenial cortex. Induction of FosB/DeltaFosB by MK801 also extended to the same cortical layers affected by terminal degeneration, likely reflecting the damage of synaptic connectivity. In orchiectomized males, the neurodegenerative and functional effects of MK801 were exacerbated. Degenerative somas in layer IV of the retrosplenial cortex significantly increased, with a parallel enhancement of terminal degeneration and FosB/DeltaFosB-expression in the mentioned cortical structures, but no additional areas were affected. These observations reveal that synaptic dysfunction/degeneration in the retrosplenial, somatosensory and parahippocampal cortices might underlie the long-lasting impairments induced by NMDA-A.
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Affiliation(s)
- S de Olmos
- Instituto de Investigación Médica Mercedes y Martín Ferreyra (INIMEC-CONICET), Friuli 2434, 5016-Córdoba, Argentina
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Bender C, Komini E, Roth A, Zieger B, Rädecke J, Henschen M. Erfolgreiche konservative Therapie einer akzidentellen Perforation des Ösophagus bei einem extremen Frühgeborenen. Z Geburtshilfe Neonatol 2009. [DOI: 10.1055/s-0029-1223150] [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]
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Neumann KYE, Kienle N, Henschen M, Grünert S, Pohl M, Bender C. Notfallmäßige Versorgung sowie Differentialdiagnose einer lebensbedrohlichen Elektrolytentgleisung beim Neugeborenen. Z Geburtshilfe Neonatol 2009. [DOI: 10.1055/s-0029-1223042] [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]
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Bölke C, Bender C, Keller M, Hildebrandt D, Henkes M, Henschen M. Sinusarrest bei einem Frühgeborenen: ungewöhnliche Nebenwirkung nach pränataler Chemotherapie. Z Geburtshilfe Neonatol 2009. [DOI: 10.1055/s-0029-1223078] [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]
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Martinsohn-Schittkowski W, Bender C, Tolzin C. ADHS – Bekanntheit allein heilt nicht. Gesundheitswesen 2009; 71:102-10; quiz 111-4. [DOI: 10.1055/s-2008-1067556] [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: 10/21/2022]
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41
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Oberst A, Bender C, Green DR. Living with death: the evolution of the mitochondrial pathway of apoptosis in animals. Cell Death Differ 2008; 15:1139-46. [PMID: 18451868 DOI: 10.1038/cdd.2008.65] [Citation(s) in RCA: 167] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023] Open
Abstract
The mitochondrial pathway of cell death, in which apoptosis proceeds following mitochondrial outer membrane permeabilization, release of cytochrome c, and APAF-1 apoptosome-mediated caspase activation, represents the major pathway of physiological apoptosis in vertebrates. However, the well-characterized apoptotic pathways of the invertebrates C. elegans and D. melanogaster indicate that this apoptotic pathway is not universally conserved among animals. This review will compare the role of the mitochondria in the apoptotic programs of mammals, nematodes, and flies, and will survey our knowledge of the apoptotic pathways of other, less familiar model organisms in an effort to explore the evolutionary origins of the mitochondrial pathway of apoptosis.
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Affiliation(s)
- A Oberst
- Department of Immunology, St. Jude Children's Research Hospital, Memphis, TN 38105, USA
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Bender C, Roth A, Buck P, Hainmann I, Zieger B, Budde U, Dittrich S, Henschen M. Hämostaseologischer Notfall bei einem extremen Frühgeborenen: großer intrakardialer Thrombus mit konsekutivem Kreislaufversagen und Anurie – erfolgreiche Lysetherapie mit Urokinase und Orgaran. Z Geburtshilfe Neonatol 2008. [DOI: 10.1055/s-2008-1078924] [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: 10/21/2022]
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Lopes Videira D, Bender C, Komini E, Hofbeck M, Häberle J, Korall H, Scheible D, Trefz FK, Henschen M. N-Acetylglutamat-Synthetase-Defekt – die seltenste Form der Harnstoffzyklusstörungen – Therapiemöglichkeiten anhand eines Fallberichts. Z Geburtshilfe Neonatol 2008. [DOI: 10.1055/s-2008-1079039] [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: 10/21/2022]
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Eigner U, Holfelder M, Wild U, Bender C, Kirstahler M, Turnwald A, Witte W, Weizenegger M, Fahr A. O21 Evaluation of a rapid molecular dipstick assay for the direct detection of methicillin-resistant Staphylococcus aureus in clinical specimens. Int J Antimicrob Agents 2007. [DOI: 10.1016/s0924-8579(07)70020-1] [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: 11/25/2022]
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Roth A, Buck P, Zieger B, Buchenau W, Arand J, Holland-Cunz S, Bender C, Henschen M. Fallbericht: Interstitielles Emphysem mit ausgeprägter Pseudozystenbildung bei einem Frühgeborenen trotz milder Beatmung. Z Geburtshilfe Neonatol 2007. [DOI: 10.1055/s-2007-983244] [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: 10/21/2022]
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Lichte K, Bender C, Komini E, Korall H, Trefz FK, Henschen M. Fallbericht: Vorsicht mit der Diagnose Schütteltrauma! Z Geburtshilfe Neonatol 2007. [DOI: 10.1055/s-2007-983256] [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: 10/21/2022]
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Merzkirch C, Bender C, Glöckler M, Wissert J, Nicolai T, Henschen M. Asphyxierende Thoraxdysplasie bei Jeune-Syndrom – Therapeutische Optionen und Prognose anhand zweier Kasuistiken. Z Geburtshilfe Neonatol 2006. [DOI: 10.1055/s-2006-946270] [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: 10/19/2022]
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Bender C, Baden W, Glöckler M, Ziemer G, Schäfer J, Hofbeck M, Henschen M. Stridor congenitus – im Einzelfall eine differentialdiagnostische Herausforderung. Z Geburtshilfe Neonatol 2006. [DOI: 10.1055/s-2006-946209] [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: 10/19/2022]
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Fletcher J, Bender C, Budowle B, Cobb WT, Gold SE, Ishimaru CA, Luster D, Melcher U, Murch R, Scherm H, Seem RC, Sherwood JL, Sobral BW, Tolin SA. Plant pathogen forensics: capabilities, needs, and recommendations. Microbiol Mol Biol Rev 2006; 70:450-71. [PMID: 16760310 PMCID: PMC1489535 DOI: 10.1128/mmbr.00022-05] [Citation(s) in RCA: 121] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
A biological attack on U.S. crops, rangelands, or forests could reduce yield and quality, erode consumer confidence, affect economic health and the environment, and possibly impact human nutrition and international relations. Preparedness for a crop bioterror event requires a strong national security plan that includes steps for microbial forensics and criminal attribution. However, U.S. crop producers, consultants, and agricultural scientists have traditionally focused primarily on strategies for prevention and management of diseases introduced naturally or unintentionally rather than on responding appropriately to an intentional pathogen introduction. We assess currently available information, technologies, and resources that were developed originally to ensure plant health but also could be utilized for postintroduction plant pathogen forensics. Recommendations for prioritization of efforts and resource expenditures needed to enhance our plant pathogen forensics capabilities are presented.
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Affiliation(s)
- J Fletcher
- Department of Entomology and Plant Pathology, Oklahoma State University, Stillwater, OK 74078, USA.
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Bender C, Baden W, Glöckler M, Ziemer G, Schäfer J, Hofbeck M, Henschen M. Stridor congenitus – im Einzelfall eine differentialdiagnostische Herausforderung. Z Geburtshilfe Neonatol 2006. [DOI: 10.1055/s-2006-943294] [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: 10/19/2022]
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