34 Works

Garvicin Q: characterization of biosynthesis and mode of action

Christian K. Desiderato, Katharina M. Hasenauer, Sebastian J. Reich, Oliver Goldbeck, Lalaina Holivololona, Kirill V. Ovchinnikov, Alexander Reiter, Marco Oldiges, Dzung B. Diep, Bernhard J. Eikmanns & Christian U. Riedel
Abstract Bacteriocins are ribosomally synthesized antimicrobial peptides, that either kill target bacteria or inhibit their growth. Bacteriocins are used in food preservation and are of increasing interest as potential alternatives to conventional antibiotics. In the present study, we show that Lactococcus petauri B1726, a strain isolated from fermented balsam pear, produces a heat-stable and protease-sensitive compound. Following genome sequencing, a gene cluster for production of a class IId bacteriocin was identified consisting of garQ (encoding...

Visinin-like protein 1 levels in blood and CSF as emerging markers for Alzheimer’s and other neurodegenerative diseases

Steffen Halbgebauer, Petra Steinacker, Daniel Riedel, Patrick Oeckl, Sarah Anderl-Straub, Jolina Lombardi, Christine A. F. von Arnim, Magdalena Nagl, Armin Giese, Albert C. Ludolph & Markus Otto
Abstract Background Visinin-like protein 1 (VILIP-1) belongs to the group of emerging biomarkers with the potential to support the early diagnosis of Alzheimer’s disease (AD). However, studies investigating the differential diagnostic potential in cerebrospinal fluid (CSF) are rare and are not available for blood. Methods We set up a novel, sensitive single molecule array (Simoa) assay for the detection of VILIP-1 in CSF and serum. In total, paired CSF and serum samples from 234 patients...

Neuronal nuclear calcium signaling suppression of microglial reactivity is mediated by osteoprotegerin after traumatic brain injury

Albrecht Fröhlich, Florian Olde Heuvel, Rida Rehman, Sruthi Sankari Krishnamurthy, Shun Li, Zhenghui Li, David Bayer, Alison Conquest, Anna M. Hagenston, Albert Ludolph, Markus Huber-Lang, Tobias Boeckers, Bernd Knöll, Maria Cristina Morganti-Kossmann, Hilmar Bading & Francesco Roselli
Abstract Background Traumatic brain injury (TBI) is characterized by massive changes in neuronal excitation, from acute excitotoxicity to chronic hyper- or hypoexcitability. Nuclear calcium signaling pathways are involved in translating changes in synaptic inputs and neuronal activity into discrete transcriptional programs which not only affect neuronal survival and synaptic integrity, but also the crosstalk between neurons and glial cells. Here, we report the effects of blunting neuronal nuclear calcium signals in the context of TBI....

Differential in vitro effects of targeted therapeutics in primary human liver cancer: importance for combined liver cancer

Ihtzaz Ahmed Malik, Mansi Rajput, Rieke Werner, Dorothea Fey, Niloofar Salehzadeh, Christine A. F. von Arnim & Jörg Wilting
Abstract The incidence of primary liver tumors, hepatocellular carcinoma (HCC), intrahepatic cholangiocellular carcinoma (ICC), and combined HCC/ICC (cHCC/CC) is increasing. For ICC, targeted therapy exists only for a small subpopulation of patients, while for HCC, Sorafenib and Lenvatinib are in use. Diagnosis of cHCC/CC is a great challenge and its incidence is underestimated, bearing the risk of unintended non-treatment of ICC. Here, we investigated effects of targeted inhibitors on human ICC cell lines (HUH28, RBE,...

Cerebrospinal fluid kappa free light chains for the diagnosis of multiple sclerosis: A systematic review and meta-analysis

Harald Hegen, Janette Walde, Klaus Berek, Georgina Arrambide, Sharmilee Gnanapavan, Batia Kaplan, Michael Khalil, Ruba Saadeh, Charlotte Teunissen, Hayrettin Tumani, Luisa M Villar, Maria Alice V Willrich, Henrik Zetterberg & Florian Deisenhammer
Background:Intrathecal immunoglobulin-G synthesis is a hallmark of multiple sclerosis (MS), which can be detected by oligoclonal IgG bands (OCB) or by κ-free light chains (κ-FLC) in cerebrospinal fluid.Objective:To perform a systematic review and meta-analysis to evaluate whether κ-FLC index has similar diagnostic value to identify patients with clinically isolated syndrome (CIS) or MS compared to OCB, and to determine κ-FLC index cut-off.Methods:PubMed was searched for studies that assessed diagnostic sensitivity and specificity of κ-FLC index...

Serum phosphorylated tau protein 181 and neurofilament light chain in cognitively impaired heart failure patients

Jan Traub, Markus Otto, Roxane Sell, Dennis Göpfert, György Homola, Petra Steinacker, Patrick Oeckl, Caroline Morbach, Stefan Frantz, Mirko Pham, Stefan Störk, Guido Stoll & Anna Frey
Abstract Background Chronic heart failure (HF) is known to increase the risk of developing Alzheimer’s dementia significantly. Thus, detecting and preventing mild cognitive impairment, which is common in patients with HF, is of great importance. Serum biomarkers are increasingly used in neurological disorders for diagnostics, monitoring, and prognostication of disease course. It remains unclear if neuronal biomarkers may help detect cognitive impairment in this high-risk population. Also, the influence of chronic HF and concomitant renal...

Serum phosphorylated tau protein 181 and neurofilament light chain in cognitively impaired heart failure patients

Jan Traub, Markus Otto, Roxane Sell, Dennis Göpfert, György Homola, Petra Steinacker, Patrick Oeckl, Caroline Morbach, Stefan Frantz, Mirko Pham, Stefan Störk, Guido Stoll & Anna Frey
Abstract Background Chronic heart failure (HF) is known to increase the risk of developing Alzheimer’s dementia significantly. Thus, detecting and preventing mild cognitive impairment, which is common in patients with HF, is of great importance. Serum biomarkers are increasingly used in neurological disorders for diagnostics, monitoring, and prognostication of disease course. It remains unclear if neuronal biomarkers may help detect cognitive impairment in this high-risk population. Also, the influence of chronic HF and concomitant renal...

Comparison of PSMA-TO-1 and PSMA-617 labeled with gallium-68, lutetium-177 and actinium-225

Catherine Meyer, Vikas Prasad, Andreea Stuparu, Peter Kletting, Gerhard Glatting, Jonathan Miksch, Christoph Solbach, Katharina Lueckerath, Lea Nyiranshuti, Shaojun Zhu, Johannes Czernin, Ambros J. Beer, Roger Slavik, Jeremie Calais & Magnus Dahlbom
Abstract Background PSMA-TO-1 (“Tumor-Optimized-1”) is a novel PSMA ligand with longer circulation time than PSMA-617. We compared the biodistribution in subcutaneous tumor-bearing mice of PSMA-TO-1, PSMA-617 and PSMA-11 when labeled with 68Ga and 177Lu, and the survival after treatment with 225Ac-PSMA-TO-1/-617 in a murine model of disseminated prostate cancer. We also report dosimetry data of 177Lu-PSMA-TO1/-617 in prostate cancer patients. Methods First, PET images of 68Ga-PSMA-TO-1/-617/-11 were acquired on consecutive days in three mice bearing...

Visinin-like protein 1 levels in blood and CSF as emerging markers for Alzheimer’s and other neurodegenerative diseases

Steffen Halbgebauer, Petra Steinacker, Daniel Riedel, Patrick Oeckl, Sarah Anderl-Straub, Jolina Lombardi, Christine A. F. von Arnim, Magdalena Nagl, Armin Giese, Albert C. Ludolph & Markus Otto
Abstract Background Visinin-like protein 1 (VILIP-1) belongs to the group of emerging biomarkers with the potential to support the early diagnosis of Alzheimer’s disease (AD). However, studies investigating the differential diagnostic potential in cerebrospinal fluid (CSF) are rare and are not available for blood. Methods We set up a novel, sensitive single molecule array (Simoa) assay for the detection of VILIP-1 in CSF and serum. In total, paired CSF and serum samples from 234 patients...

Neuronal nuclear calcium signaling suppression of microglial reactivity is mediated by osteoprotegerin after traumatic brain injury

Albrecht Fröhlich, Florian Olde Heuvel, Rida Rehman, Sruthi Sankari Krishnamurthy, Shun Li, Zhenghui Li, David Bayer, Alison Conquest, Anna M. Hagenston, Albert Ludolph, Markus Huber-Lang, Tobias Boeckers, Bernd Knöll, Maria Cristina Morganti-Kossmann, Hilmar Bading & Francesco Roselli
Abstract Background Traumatic brain injury (TBI) is characterized by massive changes in neuronal excitation, from acute excitotoxicity to chronic hyper- or hypoexcitability. Nuclear calcium signaling pathways are involved in translating changes in synaptic inputs and neuronal activity into discrete transcriptional programs which not only affect neuronal survival and synaptic integrity, but also the crosstalk between neurons and glial cells. Here, we report the effects of blunting neuronal nuclear calcium signals in the context of TBI....

Garvicin Q: characterization of biosynthesis and mode of action

Christian K. Desiderato, Katharina M. Hasenauer, Sebastian J. Reich, Oliver Goldbeck, Lalaina Holivololona, Kirill V. Ovchinnikov, Alexander Reiter, Marco Oldiges, Dzung B. Diep, Bernhard J. Eikmanns & Christian U. Riedel
Abstract Bacteriocins are ribosomally synthesized antimicrobial peptides, that either kill target bacteria or inhibit their growth. Bacteriocins are used in food preservation and are of increasing interest as potential alternatives to conventional antibiotics. In the present study, we show that Lactococcus petauri B1726, a strain isolated from fermented balsam pear, produces a heat-stable and protease-sensitive compound. Following genome sequencing, a gene cluster for production of a class IId bacteriocin was identified consisting of garQ (encoding...

Emergency medical care of patients with psychiatric disorders - challenges and opportunities: Results of a multicenter survey

Benedikt Schick, Benjamin Mayer, Markus Jäger, Bettina Jungwirth, Eberhard Barth, Martin Eble, Christoph Sponholz, Claus-Martin Muth & Carlos Schönfeldt-Lecuona
Abstract Background Pre-clinical psychiatric emergencies are generally treated by emergency medical staff. The subsequent clinical treatment is often conditioned by interaction problems between emergency medical staff and psychiatric clinical staff. Objectives To identify problems affecting interaction between emergency medical and psychiatric care of mentally ill patients and pinpoint aspects of optimized emergency care. Methods To shed light on the interaction problems an anonymous, questionnaire-based, nonrepresentative survey of 98 emergency physicians (EM) and 104 psychiatrists (PS)...

Robot-Assisted Surgery of an Iliac Artery Aneurysm: A Case Report

Grischa Hoffmann, Melanie Rusch, Rouven Berndt, Jan Beckmann, Thomas Becker, Jochen Cremer & Rene Rusch
Robot-assisted surgery has not yet been able to establish itself for vascular surgery. However, the preconditions for robot-assisted vascular interventions have changed fundamentally over the past years because of technological advances and extensive experience in other surgical disciplines. Hence, we describe a robot-assisted repair of an iliac artery aneurysm using a late-generation robotic platform. A 63-year-old male patient was diagnosed with an asymptomatic 30 mm aneurysm of the right common iliac artery. The operation was...

Mobilisation of critically ill patients receiving norepinephrine: a retrospective cohort study

Maximilian Lindholz, Clara M. Schellenberg, Julius J. Grunow, Simone Kagerbauer, Annette Milnik, Daniel Zickler, Stefan Angermair, Anett Reißhauer, Martin Witzenrath, Mario Menk, Sebastian Boie, Felix Balzer & Stefan J. Schaller
Abstract Background Mobilisation and exercise intervention in general are safe and feasible in critically ill patients. For patients requiring catecholamines, however, doses of norepinephrine safe for mobilisation in the intensive care unit (ICU) are not defined. This study aimed to describe mobilisation practice in our hospital and identify doses of norepinephrine that allowed a safe mobilisation. Methods We conducted a retrospective single-centre cohort study of 16 ICUs at a university hospital in Germany with patients...

Cerebrospinal fluid kappa free light chains for the diagnosis of multiple sclerosis: A systematic review and meta-analysis

Harald Hegen, Janette Walde, Klaus Berek, Georgina Arrambide, Sharmilee Gnanapavan, Batia Kaplan, Michael Khalil, Ruba Saadeh, Charlotte Teunissen, Hayrettin Tumani, Luisa M Villar, Maria Alice V Willrich, Henrik Zetterberg & Florian Deisenhammer
Background:Intrathecal immunoglobulin-G synthesis is a hallmark of multiple sclerosis (MS), which can be detected by oligoclonal IgG bands (OCB) or by κ-free light chains (κ-FLC) in cerebrospinal fluid.Objective:To perform a systematic review and meta-analysis to evaluate whether κ-FLC index has similar diagnostic value to identify patients with clinically isolated syndrome (CIS) or MS compared to OCB, and to determine κ-FLC index cut-off.Methods:PubMed was searched for studies that assessed diagnostic sensitivity and specificity of κ-FLC index...

Subcutaneous fat necrosis in newborns: a systematic literature review of case reports and model of pathophysiology

Leonie Frank, Stephanie Brandt & Martin Wabitsch
Abstract Background Subcutaneous fat necrosis of the newborn (SCFN) is a rare disease occurring in the first days of life. Characteristically, the infants show hard nodules in subcutaneous tissue, purple or erythematous in color and appear on the upper back, cheeks, buttocks and limbs. In most cases, SCFN is a self-limiting disease, as the nodules disappear in up to 6 months. A severe complication associated with SCFN is hypercalcaemia. Pathophysiological mechanisms causing SCFN or associated...

Supplementary material from \"Conservation measures or hotspots of disease transmission? Agri-environment schemes can reduce disease prevalence in pollinator communities\"

Robyn Manley, Vincent Doublet, Owen N. Wright, Toby Doyle, Isobel Refoy, Sophie Hedges, David Pascall, Claire Carvell, Mark J. F. Brown & Lena Wilfert
Insects are under pressure from agricultural intensification. To protect pollinators, conservation measures such as the EU agri-environment schemes (AES) promote planting wildflowers along fields. However, this can potentially alter disease ecology by serving as transmission hubs or by diluting infections. We tested this by measuring plant-pollinator interactions and virus infections (DWV-A, DWV-B and ABPV) across pollinator communities in agricultural landscapes over a year. AES had a direct effect on DWV-B, reducing prevalence and load in...

Comparison of Different Ultrasound Methods to Assess Changes in Muscle Mass in Critically ill Patients

Kristina E. Fuest, Hugo Lanz, Jana Schulz, Bernhard Ulm, Victoria A. Bennett, Julius J. Grunow, Björn Weiss, Manfred Blobner & Stefan J. Schaller
BackgroundMuscle ultrasound represents a promising approach to aid diagnoses of neuromuscular diseases in critically ill patients. Unfortunately, standardization of ultrasound measurements in clinical research is lacking, making direct comparisons between studies difficult. Protocols are required to assess qualitative muscle changes during an ICU stay in patients at high risk for the development of neuromuscular acquired weakness (ICUAW).MethodsWe conducted a retrospective, observational analysis comprised of three prospective observational studies with the aim of diagnosing muscle changes...

Robot-Assisted Surgery of an Iliac Artery Aneurysm: A Case Report

Grischa Hoffmann, Melanie Rusch, Rouven Berndt, Jan Beckmann, Thomas Becker, Jochen Cremer & Rene Rusch
Robot-assisted surgery has not yet been able to establish itself for vascular surgery. However, the preconditions for robot-assisted vascular interventions have changed fundamentally over the past years because of technological advances and extensive experience in other surgical disciplines. Hence, we describe a robot-assisted repair of an iliac artery aneurysm using a late-generation robotic platform. A 63-year-old male patient was diagnosed with an asymptomatic 30 mm aneurysm of the right common iliac artery. The operation was...

Emergency medical care of patients with psychiatric disorders - challenges and opportunities: Results of a multicenter survey

Benedikt Schick, Benjamin Mayer, Markus Jäger, Bettina Jungwirth, Eberhard Barth, Martin Eble, Christoph Sponholz, Claus-Martin Muth & Carlos Schönfeldt-Lecuona
Abstract Background Pre-clinical psychiatric emergencies are generally treated by emergency medical staff. The subsequent clinical treatment is often conditioned by interaction problems between emergency medical staff and psychiatric clinical staff. Objectives To identify problems affecting interaction between emergency medical and psychiatric care of mentally ill patients and pinpoint aspects of optimized emergency care. Methods To shed light on the interaction problems an anonymous, questionnaire-based, nonrepresentative survey of 98 emergency physicians (EM) and 104 psychiatrists (PS)...

Subcutaneous fat necrosis in newborns: a systematic literature review of case reports and model of pathophysiology

Leonie Frank, Stephanie Brandt & Martin Wabitsch
Abstract Background Subcutaneous fat necrosis of the newborn (SCFN) is a rare disease occurring in the first days of life. Characteristically, the infants show hard nodules in subcutaneous tissue, purple or erythematous in color and appear on the upper back, cheeks, buttocks and limbs. In most cases, SCFN is a self-limiting disease, as the nodules disappear in up to 6 months. A severe complication associated with SCFN is hypercalcaemia. Pathophysiological mechanisms causing SCFN or associated...

Differential in vitro effects of targeted therapeutics in primary human liver cancer: importance for combined liver cancer

Ihtzaz Ahmed Malik, Mansi Rajput, Rieke Werner, Dorothea Fey, Niloofar Salehzadeh, Christine A. F. von Arnim & Jörg Wilting
Abstract The incidence of primary liver tumors, hepatocellular carcinoma (HCC), intrahepatic cholangiocellular carcinoma (ICC), and combined HCC/ICC (cHCC/CC) is increasing. For ICC, targeted therapy exists only for a small subpopulation of patients, while for HCC, Sorafenib and Lenvatinib are in use. Diagnosis of cHCC/CC is a great challenge and its incidence is underestimated, bearing the risk of unintended non-treatment of ICC. Here, we investigated effects of targeted inhibitors on human ICC cell lines (HUH28, RBE,...

Supplementary material from \"Conservation measures or hotspots of disease transmission? Agri-environment schemes can reduce disease prevalence in pollinator communities\"

Robyn Manley, Vincent Doublet, Owen N. Wright, Toby Doyle, Isobel Refoy, Sophie Hedges, David Pascall, Claire Carvell, Mark J. F. Brown & Lena Wilfert
Insects are under pressure from agricultural intensification. To protect pollinators, conservation measures such as the EU agri-environment schemes (AES) promote planting wildflowers along fields. However, this can potentially alter disease ecology by serving as transmission hubs or by diluting infections. We tested this by measuring plant-pollinator interactions and virus infections (DWV-A, DWV-B and ABPV) across pollinator communities in agricultural landscapes over a year. AES had a direct effect on DWV-B, reducing prevalence and load in...

The impact of hydrothermal alteration on the physiochemical characteristics of reservoir rocks: the case of the Los Humeros geothermal field (Mexico)

Leandra M. Weydt, Federico Lucci, Alicja Lacinska, Dirk Scheuvens, Gerardo Carrasco-Núñez, Guido Giordano, Christopher A. Rochelle, Stefanie Schmidt, Kristian Bär & Ingo Sass
Abstract Hydrothermal alteration is a common process in active geothermal systems and can significantly change the physiochemical properties of rocks. To improve reservoir assessment and modeling of high-temperature geothermal resources linked to active volcanic settings, a detailed understanding of the reservoir is needed. The Los Humeros Volcanic Complex, hosting the third largest exploited geothermal field in Mexico, represents a natural laboratory to investigate the impact of hydrothermal processes on the rock properties through andesitic reservoir...

Comparison of PSMA-TO-1 and PSMA-617 labeled with gallium-68, lutetium-177 and actinium-225

Catherine Meyer, Vikas Prasad, Andreea Stuparu, Peter Kletting, Gerhard Glatting, Jonathan Miksch, Christoph Solbach, Katharina Lueckerath, Lea Nyiranshuti, Shaojun Zhu, Johannes Czernin, Ambros J. Beer, Roger Slavik, Jeremie Calais & Magnus Dahlbom
Abstract Background PSMA-TO-1 (“Tumor-Optimized-1”) is a novel PSMA ligand with longer circulation time than PSMA-617. We compared the biodistribution in subcutaneous tumor-bearing mice of PSMA-TO-1, PSMA-617 and PSMA-11 when labeled with 68Ga and 177Lu, and the survival after treatment with 225Ac-PSMA-TO-1/-617 in a murine model of disseminated prostate cancer. We also report dosimetry data of 177Lu-PSMA-TO1/-617 in prostate cancer patients. Methods First, PET images of 68Ga-PSMA-TO-1/-617/-11 were acquired on consecutive days in three mice bearing...

Registration Year

  • 2023
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  • 2022
    32

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  • Collection
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Affiliations

  • University of Ulm
    34
  • University Hospital Ulm
    12
  • Heidelberg University
    6
  • German Center for Neurodegenerative Diseases
    6
  • Charité - University Medicine Berlin
    4
  • University Hospital Schleswig-Holstein
    4
  • University of Göttingen
    4
  • Universitätsmedizin Göttingen
    4
  • Technical University of Munich
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  • Essen University Hospital
    4