12 results on '"Schroeder JK"'
Search Results
2. The Active Room: Freud's Office and the Egyptian Tomb.
- Author
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Schroeder JK
- Abstract
The present study examines the striking similarities between the architectural design and spatial composition of the ancient Egyptian tomb and Sigmund Freud's office at Berggasse 19 in Vienna, Austria. I argue that the Egyptian tomb elements represented within Freud's office permitted the enclosed space to play an active role in his psychoanalysis sessions. I supplement this argument by analyzing the office's spatial and architectural arrangements in relation to ancient Egyptian architectural frameworks, psychoanalytic container theory (Freud, Danze, and Quinodoz), and Freud's archeological metaphor model. This study contributes to the greater body of work on architecture as an active entity, psychoanalysis, and ancient Egyptian history., (Copyright © 2020 Schroeder.)
- Published
- 2020
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- View/download PDF
3. Critical role for TWIST1 in the induction of human uterine decidualization.
- Author
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Schroeder JK, Kessler CA, and Handwerger S
- Subjects
- Apoptosis drug effects, Apoptosis physiology, Decidua drug effects, Dinoprostone pharmacology, Estradiol pharmacology, Female, Fibroblasts cytology, Fibroblasts drug effects, Forkhead Box Protein O1, Forkhead Transcription Factors genetics, Forkhead Transcription Factors metabolism, Gene Expression drug effects, Humans, Medroxyprogesterone pharmacology, Nuclear Proteins genetics, Placenta drug effects, Pregnancy, Proto-Oncogene Protein c-ets-1 genetics, Proto-Oncogene Protein c-ets-1 metabolism, RNA, Small Interfering, Stromal Cells cytology, Stromal Cells drug effects, Twist-Related Protein 1 genetics, Decidua metabolism, Fibroblasts metabolism, Nuclear Proteins metabolism, Placenta metabolism, Stromal Cells metabolism, Twist-Related Protein 1 metabolism
- Abstract
The importance of the transcription factor TWIST1 for uterine decidualization was examined in human uterine fibroblast (HUF) cells decidualized in vitro with medroxyprogesterone, estradiol (E2), and prostaglandin E2. TWIST1 mRNA levels increased by 6.0- to 6.8-fold during the first 1-2 d of decidualization and remained above predecidualization levels for up to 15 d. Pretreatment of HUF cells with a TWIST1 small interfering RNA (siRNA) for 3 d before the induction of decidualization resulted in less morphologic differentiation than HUF cells pretreated with a nonsilencing control RNA. In addition, the cells pretreated with TWIST1 siRNA expressed 75-95% less IGF binding protein 1, LEFTY2, fibromodulin, laminin, and several other mRNA during decidualization, including the mRNA for the transcription factors forkhead box protein O1 and v-ets-erythroblastosis virus E26, both of which were previously shown to be critical for the induction of decidualization. The HUF cells pretreated with the TWIST1 siRNA also underwent less apoptosis during decidualization than the control cells, as evidenced by a 20% decrease in DNA fragmentation (terminal deoxynucleotidyl transferase 2'-deoxyuridine, 5'-triphosphate nick end labeling assay) and a 43-48% decrease in caspase 3, BCL2-associated X protein, and TNF receptor superfamily member 6 mRNA levels. Although the knockdown of TWIST1 expression markedly attenuated the induction of decidualization, overexpression of TWIST1 alone was insufficient to induce the decidualization of HUF cells. Taken together, these findings strongly implicate an essential role for TWIST1 in the initiation of human decidualization and uterine stromal cell apoptosis that occurs upstream of the induction of forkhead box protein O1 and v-ets-erythroblastosis virus E26 mRNA.
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- 2011
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4. Optimizing the clinical management of gynecological and breast cancer via online tumor conferences.
- Author
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Schroeder JK, Kuemmel S, Pietzner K, Hector J, Sehouli J, and Chekerov R
- Subjects
- Female, Humans, Breast Neoplasms therapy, Genital Neoplasms, Female therapy
- Abstract
Background: The therapy of gynecological malignancies and breast cancer requires a multimodal therapy approach based on current individualized and risk adapted state of the art therapy concepts. The aim of this online tumor conference project is to reach a broad interdisciplinary and cross-sectoral participation of specialists in order to develop high-quality therapy recommendations for complex casuistics., Patients and Methods: The concept of the interdisciplinary online tumor conference was established in 2004 at the Department of Gynecology, Charité Campus Virchow, University Hospital of Berlin to conduct online tumor board meetings of specialists in the field of gynecological cancer from different hospitals and gynecological and oncological practitioners from the outpatient sector. Following a systematic approach, patient data, relevant external clinical evidence and therapy preference are presented to the participants. An individual therapy recommendation for each patient is reached by consensus discussion., Results: By July 2009, 131 online tumor conferences had been performed with a total of 275 participants were developed. Per session, a median of 14 participants logged in online. Additionally 398 second opinion recommendations were performed. In an anonymous survey, carried out at the beginning of 2009, 95% of the participating physicians reported being satisfied with the information content and 50% were stimulated to seek more second opinions by the possibility of the online tumor conference. All contributors attested to a high comprehension of the developed therapy recommendations; 70% confirmed further that the conference presents an optimal possibility for fast and detailed exchange of information between disciplines and care sectors (in- and out-patient) and improves advanced educational training (81%)., Conclusion: The online tumor conference provides a time saving and high quality possibility for receiving a treatment recommendation based on the best available clinical and scientific evidence and contributes to continuously advanced training for therapists in the field of gynecological cancer.
- Published
- 2011
5. Parathyroid hormone-like hormone (PTHLH) represses decidualization of human uterine fibroblast cells by an autocrine/paracrine mechanism.
- Author
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Sherafat-Kazemzadeh R, Schroeder JK, Kessler CA, and Handwerger S
- Subjects
- Autocrine Communication drug effects, Caspase 3 analysis, Caspase 3 biosynthesis, Cells, Cultured, Female, Forkhead Box Protein O1, Forkhead Transcription Factors biosynthesis, Genetic Markers, Humans, Immunohistochemistry, In Situ Nick-End Labeling, Insulin-Like Growth Factor Binding Protein 1 metabolism, Left-Right Determination Factors biosynthesis, Paracrine Communication drug effects, Prolactin biosynthesis, RNA biosynthesis, RNA genetics, RNA, Small Interfering genetics, Reverse Transcriptase Polymerase Chain Reaction, Uterus cytology, Decidua drug effects, Fibroblasts drug effects, Parathyroid Hormone-Related Protein pharmacology, Uterus drug effects
- Abstract
Context: Parathyroid hormone-like hormone (PTHLH) is abundantly expressed by human endometrial stromal cells during decidualization. However, the role for PTHLH in the decidualization process is unknown., Objective: To examine the effects of PTHLH on the induction and maintenance of decidualization of human uterine fibroblast (HUF) cells in vitro., Design: HUF cells were treated with a PTHLH siRNA or a PTHLH receptor antagonist (bPTH(7-34)) before or after decidualization with medroxyprogesterone acetate (MPA), estradiol (E(2)), and prostaglandin E(2) (PGE(2)). Decidualization was monitored by immunocytochemistry and the induction of decidualization-specific marker genes, including IGFBP-1, prolactin, lefty, and transcription factor FOXO1., Results: HUF cells decidualized after pretreatment with a PTHLH siRNA showed greater morphologic changes of decidualization, greater IGFBP-1 protein, and two- to threefold more IGFBP-1, prolactin, lefty, and FOXO1 mRNAs than cells pretreated with a nonsilencing RNA. The PTHLH siRNA pretreated cells also had 31% less DNA fragmentation (TUNEL assay) and 30-35% less caspase 3 levels during decidualization than cells pretreated treated with nonsilencing RNA. Treatment of HUF cells with PTHLH siRNA or bPTH(7-34) at 9 d after the induction of decidualization also resulted in 2.1- to 3.2-fold greater IGFBP-1, prolactin, lefty, and FOXO1 mRNA levels than that noted in control cells treated with nonsilencing RNA., Conclusions: These finding strongly suggest that PTHLH represses the induction of human decidualization, stimulates stromal cell apoptosis, and limits the extent of uterine stromal cell differentiation. Because PTHLH and its receptor are expressed by HUF cells and placental cells, the inhibitory effect of PTHLH on decidualization appears to be due, at least in part, to an autocrine/paracrine mechanism.
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- 2011
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6. Transcription factor ETS1 is critical for human uterine decidualization.
- Author
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Kessler CA, Schroeder JK, Brar AK, and Handwerger S
- Subjects
- Cells, Cultured, Decidua drug effects, Decidua growth & development, Female, Gene Expression Regulation, Humans, Oligonucleotides, Antisense pharmacology, Proto-Oncogene Protein c-ets-1 antagonists & inhibitors, Proto-Oncogene Protein c-ets-1 biosynthesis, Proto-Oncogene Protein c-ets-1 genetics, Decidua metabolism, Proto-Oncogene Protein c-ets-1 physiology
- Abstract
The aim of this study was to examine whether the transcription factor ETS1 plays a critical role in the regulation of human decidualization. Decidual fibroblast cells were decidualized in vitro by treatment with medroxyprogesterone, estradiol (E(2)) and dibutyryl cyclic AMP or prostaglandin E(2) in the absence or presence of an ETS1 antisense oligonucleotide (oligo) that blocks the translation of ETS1 mRNA. Control experiments were performed using a control oligo that did not affect ETS1 expression and the induction of specific marker genes for decidualization. The ETS1 antisense oligo markedly inhibited ETS1 protein expression and significantly inhibited downstream targets of ETS1 action. On day 6 of culture, the decidualized fibroblast cells that had been exposed to the ETS1 antisense oligo contained 40-90% less mRNAs for prolactin, insulin growth factor binding protein 1 (IGFBP-1) and other decidualization-specific markers (laminin, tissue inhibitor of metalloproteinase-3 [TIMP3], endometrial bleeding associated factor [EBAF] and decorin) than those of control cells that had not been exposed to the ETS1 antisense oligo. GAPDH mRNA levels, which do not change during decidualization, were unaffected by either the ETS1 antisense or the control oligo. The cells decidualized in the presence of the ETS1 antisense oligo also released significantly less prolactin, EBAF and IGFBP-1 protein, determined by western blot analyses, than the control cells. Taken together, these findings strongly suggest that ETS1 plays a critical role in the induction of human decidualization.
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- 2006
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7. Cannabinoid receptor I activation markedly inhibits human decidualization.
- Author
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Moghadam KK, Kessler CA, Schroeder JK, Buckley AR, Brar AK, and Handwerger S
- Subjects
- Benzoxazines, Calcium Channel Blockers pharmacology, Cannabinoids metabolism, DNA-Binding Proteins genetics, DNA-Binding Proteins metabolism, Endometrium cytology, Endometrium drug effects, Female, Fibroblasts cytology, Fibroblasts drug effects, Forkhead Box Protein O1, Forkhead Transcription Factors, Humans, In Situ Nick-End Labeling, Insulin-Like Growth Factor Binding Protein 1 genetics, Insulin-Like Growth Factor Binding Protein 1 metabolism, Laminin genetics, Laminin metabolism, Left-Right Determination Factors, Morpholines pharmacology, Naphthalenes pharmacology, Piperidines pharmacology, Prolactin genetics, Prolactin metabolism, Pyrazoles pharmacology, RNA, Messenger genetics, RNA, Messenger metabolism, Receptor, Cannabinoid, CB1 chemistry, Receptor, Cannabinoid, CB1 genetics, Stromal Cells cytology, Stromal Cells drug effects, Tissue Inhibitor of Metalloproteinase-3 genetics, Tissue Inhibitor of Metalloproteinase-3 metabolism, Transcription Factors genetics, Transcription Factors metabolism, Transforming Growth Factor beta genetics, Transforming Growth Factor beta metabolism, Apoptosis drug effects, Cyclic AMP metabolism, Decidua physiology, Endometrium physiology, Fibroblasts physiology, Receptor, Cannabinoid, CB1 metabolism, Stromal Cells physiology
- Abstract
The role of cannabinoid receptor I (CBR-1) in the induction of decidualization was examined using decidual fibroblasts and human endometrial stromal cells as model systems. Decidual fibroblasts decidualized in vitro for 3 and 6 days in the presence of the CBR-1 agonist R(+)-WIN 55,212-2 mesylate (WIN, 0.1-10 microM) expressed less of the decidualization-specific markers prolactin, CBR-1, forkhead (FKHR), TIMP-3, laminin, endometrial bleeding associated factor (EBAF), decorin and insulin-like growth factor binding protein-1 (IGFBP-1) mRNA levels compared to control cells. The maximal decrease for each transcript was in the range of 50-99%. In contrast, cells exposed to the CBR-1 inhibitor AM-251 (1 microM) expressed about two-fold higher levels of the decidualization-specific marker gene mRNAs. The WIN-exposed cells showed a marked decrease in intracellular cAMP levels and a progressive, concentration-dependent increase in DNA fragmentation (TUNEL assay) and caspase 3 levels during decidualization compared to control cells. These studies strongly suggest that activation of CBR-1 inhibits human decidualization and stimulates apoptosis by a cAMP-dependent mechanism.
- Published
- 2005
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8. Intraluminal pulmonary artery fibroma in a 7-year-old boy.
- Author
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Schroeder JK and Srinivasan V
- Subjects
- Age of Onset, Child, Cineangiography, Echocardiography, Transesophageal, Fibroma pathology, Fibroma surgery, Heart Neoplasms pathology, Heart Neoplasms surgery, Humans, Male, Vascular Neoplasms pathology, Vascular Neoplasms surgery, Fibroma complications, Heart Neoplasms complications, Pulmonary Artery, Pulmonary Valve Stenosis etiology, Vascular Neoplasms complications
- Abstract
A supravalvar intraluminal pulmonary artery fibroma, presenting as pulmonary stenosis, is described. This is a previously unreported location for this type of tumor.
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- 2000
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9. Pediatric electrocardiography in the emergency department.
- Author
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Schroeder JK
- Subjects
- Child, Child, Preschool, Emergency Service, Hospital, Heart Defects, Congenital diagnosis, Humans, Infant, Metabolic Diseases diagnosis, Myocardial Ischemia diagnosis, Reference Values, Electrocardiography methods, Heart Diseases diagnosis
- Abstract
Electrocardiography can be a useful screening and diagnostic tool for children seen in an Emergency Department setting. This article reviews the technical aspects of electrocardiography in children and offers an approach to interpretation. Normal values for ECGs in children are presented in tabular format. Electrocardiographic features of several specific conditions are discussed.
- Published
- 1993
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10. Recombinant human stem cell factor stimulates growth of a human glioblastoma cell line expressing c-kit protooncogene.
- Author
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Berdel WE, de Vos S, Maurer J, Oberberg D, von Marschall Z, Schroeder JK, Li J, Ludwig WD, Kreuser ED, and Thiel E
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- Cell Division drug effects, Dose-Response Relationship, Drug, Flow Cytometry, Glioma genetics, Humans, Proto-Oncogene Proteins analysis, Proto-Oncogene Proteins c-kit, Proto-Oncogenes, Recombinant Proteins pharmacology, Stem Cell Factor, Tumor Cells, Cultured, Tumor Stem Cell Assay, Glioma pathology, Hematopoietic Cell Growth Factors pharmacology
- Abstract
The growth of a panel of eight different human glioblastoma cell lines was examined in a human tumor cloning assay in agar, a tritiated thymidine uptake assay, and by counting cell numbers, in cultures performed in the absence or presence of increasing concentrations (1 to 100 ng/ml) of recombinant human stem cell factor (SCF). Growth of 7 of 8 cell lines was not significantly and reproducibly affected by recombinant human SCF. However, growth of the CRL 1620 cell line could be stimulated up to 5-fold by the cytokine. In contrast to the other cell lines investigated, CRL 1620 expressed the c-kit protooncogene assessed on the mRNA and protein level. Furthermore, SCF-induced proliferation of CRL 1620 cells was sensitive to the tyrosine kinase inhibitor erbstatin. Our data suggest that SCF can be operative in growth modulation of malignant cells outside the hematopoietic system, and this finding should be further studied for its possible clinical implications.
- Published
- 1992
11. Inducing tricuspid regurgitation as palliation.
- Author
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Schroeder JK and Wiggins JW
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- Cardiac Catheterization instrumentation, Coronary Vessel Anomalies diagnostic imaging, Coronary Vessel Anomalies physiopathology, Echocardiography, Heart Defects, Congenital diagnostic imaging, Heart Defects, Congenital physiopathology, Hemodynamics physiology, Humans, Infant, Newborn, Male, Postoperative Complications diagnostic imaging, Pulmonary Valve diagnostic imaging, Pulmonary Valve physiopathology, Surgical Instruments, Tricuspid Valve diagnostic imaging, Tricuspid Valve physiopathology, Tricuspid Valve Insufficiency diagnostic imaging, Coronary Vessel Anomalies surgery, Heart Defects, Congenital surgery, Palliative Care, Pulmonary Valve abnormalities, Tricuspid Valve surgery
- Abstract
We describe a technique for palliative decompression of the hypertensive right ventricle seen in pulmonary atresia with intact ventricular septum (PAIVS), utilizing a bioptome catheter for partial tricuspid avulsion.
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- 1992
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12. Dental phosphoprotein-induced formation of hydroxylapatite during in vitro synthesis of amorphous calcium phosphate.
- Author
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Nawrot CF, Campbell DJ, Schroeder JK, and Van Valkenburg M
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- Amino Acids analysis, Animals, Binding Sites, Cattle, Dentin metabolism, Male, Molecular Conformation, Rats, Spectrophotometry, Infrared, X-Ray Diffraction, Calcium Phosphates metabolism, Hydroxyapatites metabolism, Incisor metabolism, Phosphoproteins metabolism, Tooth, Unerupted metabolism
- Abstract
(Ethylenedinitrilo)tetraacetic acid soluble phosphoproteins were isolated from rat incisor and bovine unerupted teeth. This material was examined for its effect on the stability of amorphous calcium phosphate in vitro. When the precipitation of amorphous calcium phosphate was attempted in the presence of small amounts of these phospho-proteins, an apatite-like mineral was observed to form, which was approximately 60% crystalline, as determined by infrared measurements. This apatite phase could not be induced by addition of phosphoprotein after the precipitation reaction. The organic phosphate bound to these phosphoproteins was shown to be directly responsible for the formation of the apatite phase, since removal of 60% of the covalently bound phosphate with alkaline phosphatase destroyed the protein's ability to induce hydroxylapatite formation. The properties of the dental phosphoproteins appear to be consistent with their possible involvement in the development of the mineral phase of dentine.
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- 1976
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- View/download PDF
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