0000000000235003

AUTHOR

Birgit Rathkolb

showing 3 related works from this author

Murine tissue factor disulfide mutation causes a bleeding phenotype with sex specific organ pathology and lethality.

2019

Tissue factor is highly expressed in sub-endothelial tissue. The extracellular allosteric disulfide bond Cys186-Cys209 of human tissue factor shows high evolutionary conservation and in vitro evidence suggests that it significantly contributes to tissue factor procoagulant activity. To investigate the role of this allosteric disulfide bond in vivo, we generated a C213G mutant tissue factor mouse by replacing Cys213 of the corresponding disulfide Cys190-Cys213 in murine tissue factor. A bleeding phenotype was prominent in homozygous C213G tissue factor mice. Pre-natal lethality of 1/3rd of homozygous offspring was observed between E9.5 and E14.5 associated with placental hemorrhages. After b…

Malemedicine.medical_specialtyOffspring610 Medicine & healthHemorrhage030204 cardiovascular system & hematologyBiologymedicine.disease_causeArticleThromboplastin11459 Center for Molecular Cardiology03 medical and health sciencesTissue factorArterial Thrombosis; Blood Coagulation and Fibrinolysis; Disorders of Coagulation and FibrinolysisMice0302 clinical medicineIn vivoPregnancyInternal medicinemedicineExtracellularAnimalsDisulfidesMutationHematologyPhenotypeIn vitroEndocrinologyPhenotype10036 Medical Clinic10076 Center for Integrative Human PhysiologyHemostasisMutation10209 Clinic for CardiologyFemale030215 immunologyHaematologica
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Physiological relevance of the neuronal isoform of inositol-1,4,5-trisphosphate 3-kinases in mice

2020

Inositol-1,4,5-trisphosphate 3-kinase-A (ITPKA) is the neuronal isoform of ITPKs and exhibits both actin bundling and InsP3kinase activity. In addition to neurons, ITPKA is ectopically expressed in tumor cells, where its oncogenic activity increases tumor cell malignancy. In order to analyze the physiological relevance of ITPKA, here we performed a broad phenotypic screening of itpka deficient mice. Our data show that among the neurobehavioral tests analyzed, itpka deficient mice reacted faster to a hotplate, prepulse inhibition was impaired and the accelerating rotarod test showed decreased latency of itpka deficient mice to fall. These data indicate that ITPKA is involved in the regulatio…

Male0301 basic medicineGene isoformCentral nervous systemMice03 medical and health scienceschemistry.chemical_compound0302 clinical medicinegenetics [Phosphotransferases (Alcohol Group Acceptor)]medicinephysiology [Prepulse Inhibition]AnimalsHumansdeficiency [Phosphotransferases (Alcohol Group Acceptor)]Inositolddc:610Prepulse inhibitionActinMice KnockoutNeuronsenzymology [Neurons]Prepulse InhibitionChemistryKinaseGeneral Neurosciencedeficiency [Isoenzymes]Small intestineCell biologyIsoenzymesPhosphotransferases (Alcohol Group Acceptor)030104 developmental biologymedicine.anatomical_structureCell cultureFemaleCaco-2 Cellsgenetics [Isoenzymes]030217 neurology & neurosurgeryNeuroscience Letters
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Faim2 contributes to neuroprotection by erythropoietin in transient brain ischemia.

2018

Delayed cell death in the penumbra region of acute ischemic stroke occurs through apoptotic mechanisms, making it amenable to therapeutic interventions. Fas/CD95 mediates apoptotic cell death in response to external stimuli. In mature neurons, Fas/CD95 signaling is modulated by Fas-apoptotic inhibitory molecule 2 (Faim2), which reduces cell death in animal models of stroke, meningitis, and Parkinson disease. Erythropoietin (EPO) has been studied as a therapeutic strategy in ischemic stroke. Erythropoietin stimulates the phosphatidylinositol-3 kinase/Akt (PI3K/Akt) pathway, which regulates Faim2 expression. Therefore, up-regulation of Faim2 may contribute to neuroprotection by EPO. Male Faim…

Male0301 basic medicinemetabolism [Apoptosis Regulatory Proteins]FAIM2 protein humanlifeguard protein mouseIschemiaNerve Tissue Proteinspathology [Ischemic Attack Transient]physiology [Neuroprotection]PharmacologyBiochemistryNeuroprotectionmetabolism [Erythropoietin]metabolism [Ischemic Attack Transient]Brain ischemiaMice03 medical and health sciencesCellular and Molecular Neuroscience0302 clinical medicinemedicineAnimalsHumansddc:610ErythropoietinStrokeProtein kinase BPI3K/AKT/mTOR pathwayAgedpharmacology [Erythropoietin]Mice Knockoutmetabolism [Nerve Tissue Proteins]business.industryPenumbraMembrane ProteinsMiddle Agedmedicine.diseaseNeuroprotection030104 developmental biologyIschemic Attack TransientErythropoietinphysiopathology [Ischemic Attack Transient]FemaleDose-dependency ; Erythropoietin ; Fas-apoptotic Inhibitory Molecule 2 ; Ischemia-reperfusion ; Neuroprotection ; StrokeApoptosis Regulatory Proteinsbusinessmetabolism [Membrane Proteins]030217 neurology & neurosurgerymedicine.drug
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