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Maskal S, Chang J, Ellis R, Messer N, Melland-Smith M, Tu C, Miller B, Petro C, Simon R, Prabhu A, Rosen M, Beffa L. Abdominal wall mass resections: single-center closure practices and outcomes following oncologic resections of abdominal wall fascia. Hernia 2024; 28:457-464. [PMID: 38062203 DOI: 10.1007/s10029-023-02928-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2023] [Accepted: 11/05/2023] [Indexed: 04/06/2024]
Abstract
PURPOSE Radical resections for abdominal wall tumors are rare, thus yielding limited data on reconstruction of defects. We describe surgical management and long-term outcomes following radical tumor resection. METHODS This was a single-center retrospective review of patients between January 2010 and December 2022. Variables included operative characteristics, wound complications, hernia development, tumor recurrence, and reoperation. A multivariable analysis compared wound morbidity for suture and mesh repairs while adjusting for defect width, fascial closure, and CDC wound class. RESULTS 120 patients were identified. Mean follow-up was 3.9 ± 3.4 years. Seventy-five (62.5%) of the masses were primary; most commonly desmoid (n = 25) and endometrioma (n = 27). Forty-five masses were metastases. Mean tumor width was 6.2 ± 3.4 cm; mean defect width was 8.1 ± 4.1 cm. Sixty-one patients (50.8%) had mesh placed, with variation in technique. Postoperative CT scans were available for 88 (73.3%) patients. Forty SSOs (33.3%), 11 SSIs (9.2%), and 18 (15%) SSOPIs occurred within 30 days. On multivariable analysis, increased defect width was associated with SSOPI (OR 1.17, p = 0.041) and CDC wound class II-III was associated with SSI (OR 8.38 and 49.1, p < 0.05) and SSOPI (OR 5.77 and 17.4, p < 0.05); mesh was not associated with these outcomes. Seven patients (5.8%) underwent 30-day reoperations and 35 (20.8%) required additional operations after 30 days. Thirteen percent developed abdominal wall (n = 8) or intra-abdominal tumor recurrence (n = 8) requiring reoperation. Twenty-seven (22.5%) patients developed hernias with a mean fascial defect width of 9.8 ± 7.2 cm. CONCLUSION Abdominal wall mass resections are morbid, often contaminated cases with high postoperative complication rates. Risks and benefits of mesh implantation should be tailored on an individual basis.
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Affiliation(s)
- S Maskal
- Department of Surgery, Cleveland Clinic, 2049 E 100th St, A-100, Cleveland, OH, 44106, USA.
| | - J Chang
- Department of Surgery, Cleveland Clinic, 2049 E 100th St, A-100, Cleveland, OH, 44106, USA
| | - R Ellis
- Department of Surgery, Cleveland Clinic, 2049 E 100th St, A-100, Cleveland, OH, 44106, USA
| | - N Messer
- Department of Surgery, Cleveland Clinic, 2049 E 100th St, A-100, Cleveland, OH, 44106, USA
| | - M Melland-Smith
- Department of Surgery, Cleveland Clinic, 2049 E 100th St, A-100, Cleveland, OH, 44106, USA
| | - C Tu
- Department of Surgery, Cleveland Clinic, 2049 E 100th St, A-100, Cleveland, OH, 44106, USA
| | - B Miller
- Department of Surgery, Cleveland Clinic, 2049 E 100th St, A-100, Cleveland, OH, 44106, USA
| | - C Petro
- Department of Surgery, Cleveland Clinic, 2049 E 100th St, A-100, Cleveland, OH, 44106, USA
| | - R Simon
- Department of Surgery, Cleveland Clinic, 2049 E 100th St, A-100, Cleveland, OH, 44106, USA
| | - A Prabhu
- Department of Surgery, Cleveland Clinic, 2049 E 100th St, A-100, Cleveland, OH, 44106, USA
| | - M Rosen
- Department of Surgery, Cleveland Clinic, 2049 E 100th St, A-100, Cleveland, OH, 44106, USA
| | - L Beffa
- Department of Surgery, Cleveland Clinic, 2049 E 100th St, A-100, Cleveland, OH, 44106, USA
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Simon R, Shay R, Bergam B, Katz R, Delaney S. Gastroschisis ultrasound bowel characteristics demonstrate minimal impact on perinatal outcomes. J Neonatal Perinatal Med 2023; 16:639-647. [PMID: 38043025 DOI: 10.3233/npm-230159] [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] [Indexed: 12/04/2023]
Abstract
BACKGROUND Bowel dilation and bowel wall thickness are common prenatal ultrasound measurements for fetuses with gastroschisis. Data regarding antenatal sonographic bowel findings and postnatal outcomes are conflicting. Our objective was to evaluate the impact of in utero bowel measurements on perinatal outcomes in gastroschisis pregnancies. METHODS Retrospective cohort study of 116 pregnancies complicated by gastroschisis between 2011 and 2020. We reviewed ultrasounds documenting fetal bowel measurements. To evaluate the association of these measurements with antepartum and delivery outcomes, we ran logistic and linear models using generalized estimating equations. RESULTS Eleven perinatal outcomes reached statistical significance, although with minimal clinical impact given small magnitude of effect. Intra-abdominal bowel dilation was associated with a 0.5 week decrease in delivery gestational age (GA) (95% CI -0.07, -0.03) and a 6.93 g increase in birth weight (95% CI 1.54, 28.73). Intra-abdominal bowel wall thickness was associated with later GA of non-stress test (NST) start of 0.22 weeks (95% CI 0.07, 0.37), increased delivery GA of 0.08 weeks (95% CI 0.02, 0.15), 0.006 decrease in umbilical artery (UA) pH (95% CI -0.009, -0.003), 0.26 increase in UA base deficit (95% CI 0.09, 0.43), and decreased odds of cesarean delivery (OR = 0.83, 95% CI 0.70, 0.99). Extra-abdominal bowel wall thickness was associated with a 0.1 increase in UA base deficit (95% CI 0.02, 0.19) and a 0.05 increase in 5-min APGAR score (95% CI 0.01, 0.09). Stomach cross-section was associated with a 0.01 week decrease in delivery GA (95% CI -0.02, -0.001) and increased odds of receiving betamethasone (OR = 1.02, 95% CI 1.01, 1.04). CONCLUSIONS In utero bowel characteristics reached statistical significance for several outcomes, but with minimal meaningful clinical differences in outcomes.
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Affiliation(s)
- R Simon
- Department of Ob/Gyn, University of Washington, Seattle, WA, USA
| | - R Shay
- Department of Ob/Gyn, University of Washington, Seattle, WA, USA
| | - B Bergam
- School of Medicine, University of Washington, Seattle, WA, USA
| | - R Katz
- Department of Ob/Gyn, University of Washington, Seattle, WA, USA
| | - S Delaney
- Department of Ob/Gyn, University of Washington, Seattle, WA, USA
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Lennartz M, Minner S, Gorbokon N, Menz A, Krech T, Höflmayer D, Simon R, Blessin NC, Sauter G, Clauditz TS, Hinsch A. Cadherin-16 (CDH16) Immunohistochemistry: A Novel Diagnostic Tool for Renal Cell Carcinoma and Papillary Carcinomas of the Thyroid. Am J Clin Pathol 2022. [DOI: 10.1093/ajcp/aqac126.165] [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: 11/11/2022] Open
Abstract
Abstract
Introduction/Objective
Introduction: Cadherin-16 (CDH16), also termed kidney specific cadherin (ksp-cadherin), is a membrane-associated glycoprotein with a role in the embryonal development of tubules in kidney and thyroid. Downregulation of CDH16 RNA was found in papillary carcinomas of the thyroid.
Methods/Case Report
Methods: A set of tissue microarrays containing 14,978 samples from 149 different tumor types and subtypes as well as 608 samples of 76 different normal tissue types was analyzed by immunohistochemistry to determine the expression of CDH16 in cancer and to assess the diagnostic utility of immunohistochemical CDH16 analysis.
Results (if a Case Study enter NA)
Results: Among normal tissues, a membranous CDH16 immunostaining predominated in thyroid, kidney, cauda epididymis, and in mesonephric remnants. In the thyroid, CDH16 staining was seen in 100% of normal samples, 83% of follicular adenomas, 58% of follicular carcinomas, but in only 9% of papillary carcinomas (p<0.0001). Among non-thyroidal tumors, CDH16 positivity was particularly frequent in nephrogenic adenomas (100%), oncocytomas (98%), chromophobe (97%), clear cell (85%), and papillary (76%) renal cell carcinomas (RCCs), clear cell (56%), mucinous (36%), and endometroid (16%) carcinomas as well as carcinosarcomas (18%) of the ovary, adenocarcinomas of the cervix uteri (40%), serous (33%), clear cell (33%), and endometroid carcinomas (18%) of the endometrium and in various subtypes of neuroendocrine neoplasms (4-26%).
Conclusion
Given the massive loss of CDH16 expression in >90% of papillary carcinomas of the thyroid, CDH16 is a highly useful diagnostic marker for these tumors. CDH16 immunohistochemistry is also useful for the identification of nephrogenic adenomas and the distinction of renal cell carcinomas from other neoplasms.
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Affiliation(s)
- M Lennartz
- Pathology, Clinical University Hamburg-Eppendorf , Hamburg, Hamburg , Germany
| | - S Minner
- Pathology, Clinical University Hamburg-Eppendorf , Hamburg, Hamburg , Germany
| | - N Gorbokon
- Pathology, Clinical University Hamburg-Eppendorf , Hamburg, Hamburg , Germany
| | - A Menz
- Pathology, Clinical University Hamburg-Eppendorf , Hamburg, Hamburg , Germany
| | - T Krech
- Pathology, Clinical University Hamburg-Eppendorf , Hamburg, Hamburg , Germany
| | - D Höflmayer
- Pathology, Clinical University Hamburg-Eppendorf , Hamburg, Hamburg , Germany
| | - R Simon
- Pathology, Clinical University Hamburg-Eppendorf , Hamburg, Hamburg , Germany
| | - N C Blessin
- Pathology, Clinical University Hamburg-Eppendorf , Hamburg, Hamburg , Germany
| | - G Sauter
- Pathology, Clinical University Hamburg-Eppendorf , Hamburg, Hamburg , Germany
| | - T S Clauditz
- Pathology, Clinical University Hamburg-Eppendorf , Hamburg, Hamburg , Germany
| | - A Hinsch
- Pathology, Clinical University Hamburg-Eppendorf , Hamburg, Hamburg , Germany
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Huang J, Bagsic S, Simon R. CHARACTERIZING OVERLAPPING RADIOCONTRAST MEDIA, SHELLFISH, AND IODINE ALLERGIES. Ann Allergy Asthma Immunol 2022. [DOI: 10.1016/j.anai.2022.08.550] [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: 11/11/2022]
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Thornton C, Magaret A, Carmody L, Kalikin L, Simon R, LiPuma J, Caverly L. 114 Use of daily home spirometry to predict clinical outcomes in persons with cystic fibrosis. J Cyst Fibros 2022. [DOI: 10.1016/s1569-1993(22)00805-0] [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: 11/07/2022]
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Woelber L, Blessin N, Rolschewski AC, Lutz F, Mandelkow T, Yang C, Bady E, Reiswich V, Simon R, Sauter G, Mahner S, De Gregorio N, Kalder M, Klapdor R, Braicu I, Fuerst S, Klar M, Strauß HG, Burandt E, Prieske K. 604P T cell density and immune phenotypes at the invasive margin correlate with prognosis in epithelial vulvar cancer. Ann Oncol 2022. [DOI: 10.1016/j.annonc.2022.07.732] [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: 11/15/2022] Open
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Knipper S, Mehdi Irai M, Simon R, Köhler D, Isabel R, Eiber M, Van Leeuwen F, Van Leeuwen P, Budäus L, Steuber T, Graefen M, Tennstedt P, Heck M, Horn T, Maurer T. Cohort study of oligorecurrent prostate cancer patients: Oncological outcomes of patients treated with salvage lymph node dissection via PSMA radioguided surgery. Eur Urol 2022. [DOI: 10.1016/s0302-2838(22)00594-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Michael KC, Musa J, Aboki D, Evule N, Simon R, Sagay E, Akpa E, Ameh J. RARE PRESENTATION OF FLORID VULVA WARTS - A CASE REPORT AND REVIEW OF LITERATURE. Jos J Med 2022; 16:1-7. [PMID: 38155766 PMCID: PMC10754055] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Subscribe] [Scholar Register] [Indexed: 12/30/2023]
Abstract
Background Condyloma acuminata is an extremely common cutaneous sexually transmitted disease often diagnosed clinically, on the basis of its warty, cauliflower, and verrucous appearance. It is caused by the "low risk" Human papillomavirus types 6 and 11 in 90 percent of cases. The immune system plays a critical role in determining the course of viral infection, with immune-suppression and advanced age increasing the risk for long term wart persistence. Treatment options include the use of a wide variety of topical medications as well as surgical excision by cauterisation. Patient A rare case of florid vulvar warts in a 21-year old nulliparous immuno-competent woman is presented and the literature reviewed. She had a 7-month history of progressive vulva swelling with associated itching, contact bleeding, and malodorous discharge. It measured about 14 × 10 cm in dimensions, occupying the posterior two-thirds of the labia majora and minora and obliterating the posterior commissure. Intervention There was no positive response to Podophyllin application, however, it was eventually excised and histologic analysis excluded malignancy. Conclusion Florid vulvar warts though rare in immune-competent patients, could occur. Patients with persistent and recurrent infection often require surgical procedures as was performed in our patient with the possibility of speedy recovery and restoration of normal anatomy and cosmesis.
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Affiliation(s)
- K C Michael
- Department of Obstetrics and Gynaecology, Jos University Teaching Hospital, Plateau state, Nigeria
| | - J Musa
- Department of Obstetrics and Gynaecology, Jos University Teaching Hospital, Plateau state, Nigeria
| | - D Aboki
- Department of Obstetrics and Gynaecology, Jos University Teaching Hospital, Plateau state, Nigeria
| | - N Evule
- Department of Obstetrics and Gynaecology, Jos University Teaching Hospital, Plateau state, Nigeria
| | - R Simon
- Department of Obstetrics and Gynaecology, Jos University Teaching Hospital, Plateau state, Nigeria
| | - E Sagay
- Department of Obstetrics and Gynaecology, Jos University Teaching Hospital, Plateau state, Nigeria
| | - E Akpa
- Department of Obstetrics and Gynaecology, Jos University Teaching Hospital, Plateau state, Nigeria
| | - J Ameh
- Department of Obstetrics and Gynaecology, Jos University Teaching Hospital, Plateau state, Nigeria
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Dum D, Blessin NC, Henke TL, Mandelkow T, Bady E, Raedler J, Simon R, Sauter G, Lennartz M, Wilczak W, Burandt E. Semi-automated validation and quantification of CTLA-4 in 90 different Tumor entities using multiple antibodies and artificial intelligence. Am J Clin Pathol 2021. [DOI: 10.1093/ajcp/aqab191.293] [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: 11/13/2022] Open
Abstract
Abstract
Introduction/Objective
Introduction: CTLA-4 is an inhibitory immune checkpoint receptor and a negative regulator of anti-tumor T-cell function. This study aimed at a comparative analysis of CTLA-4+ entities. cells between different tumor
Methods/Case Report
Methods: To quantify CTLA-4+ cells, 4,582 tumor samples from 90 different tumor entities as well as 608 samples of 76 different normal tissue types were analyzed by immunohistochemistry in a tissue microarray format. Two different antibody clones (MSVA-152R and CAL49) were validated and quantified using a deep learning framework for automated exclusion of unspecific immunostaining.
Results (if a Case Study enter NA)
Results: Comparing both CTLA-4 antibodies revealed a clone dependent unspecific staining pattern in adrenal cortical adenoma (63%) for MSVA-152R and in pheochromocytoma (67%) as well as hepatocellular carcinoma (36%) for CAL49. After automated exclusion of non-specific staining reaction (3.6%), a strong correlation was observed for the densities of CTLA-4+ lymphocytes obtained by both antibodies (r=0.87; p<0.0001). The mean density of CTLA-4+cells was 674±1482 cells/ mm2 and ranged from 71±175 cells/mm2 in leiomyoma to 5916±3826 cells/mm2 in Hodgkin’s lymphoma. Within epithelial tumors, the density of CTLA-4+ lymphocytes were higher in squamous cell (421±467 cells/ mm2) and urothelial carcinomas (419±347 cells/ mm2) than in adenocarcinomas (269±375 cells/ mm2) and renal cell neoplasms (256±269 cells/ mm2). A high CTLA-4+ cell density was linked to low pT category (p<0.0001), absent lymph node metastases (p=0.0354), and PD-L1 expression in tumor cells or inflammatory cells (p<0.0001 each). A high CTLA-4/CD3-ratio was linked to absent lymph node metastases (p=0.0295) and to PD-L1 positivity on immune cells (p<0.0026).
Conclusion
Marked differences exist in the number of CTLA-4+ lymphocytes between tumors. Analyzing two independent antibodies by a deep learning framework can facilitate automated quantification of immunohistochemically analyzed target proteins such as CTLA-4.
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Affiliation(s)
- D Dum
- Pathology, University Medical Center Hamburg-Eppendorf, Hamburg, Hamburg, GERMANY
| | - N C Blessin
- Pathology, University Medical Center Hamburg-Eppendorf, Hamburg, Hamburg, GERMANY
| | - T L Henke
- Pathology, University Medical Center Hamburg-Eppendorf, Hamburg, Hamburg, GERMANY
| | - T Mandelkow
- Pathology, University Medical Center Hamburg-Eppendorf, Hamburg, Hamburg, GERMANY
| | - E Bady
- Pathology, University Medical Center Hamburg-Eppendorf, Hamburg, Hamburg, GERMANY
| | - J Raedler
- Pathology, University Medical Center Hamburg-Eppendorf, Hamburg, Hamburg, GERMANY
| | - R Simon
- Pathology, University Medical Center Hamburg-Eppendorf, Hamburg, Hamburg, GERMANY
| | - G Sauter
- Pathology, University Medical Center Hamburg-Eppendorf, Hamburg, Hamburg, GERMANY
| | - M Lennartz
- Pathology, University Medical Center Hamburg-Eppendorf, Hamburg, Hamburg, GERMANY
| | - W Wilczak
- Pathology, University Medical Center Hamburg-Eppendorf, Hamburg, Hamburg, GERMANY
| | - E Burandt
- Pathology, University Medical Center Hamburg-Eppendorf, Hamburg, Hamburg, GERMANY
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Blessin NC, Bady E, Mandelkow T, Yang C, Raedler J, Simon R, Fraune C, Lennartz M, Minner S, Burandt E, Höflmayer D, Sauter G, Weidemann SA. P02.03 Automated cell type specific PD-L1 quantification by artificial intelligence using high throughput bleach & stain 15-marker multiplex fluorescence immunohistochemistry in human cancers. J Immunother Cancer 2021. [DOI: 10.1136/jitc-2021-itoc8.15] [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: 11/04/2022] Open
Abstract
BackgroundThe quantification of PD-L1 (programmed cell death ligand 1) has been used to predict patient’s survival, to characterize the tumor immune microenvironment, and to predict response to immune checkpoint therapies. However, a framework to assess the PD-L1 status with a high interobserver reproducibility on tumor cells and different types of immune cells has yet to be established.Materials and MethodsTo study the impact of PD-L1 expression on the tumor immune microenvironment and patient outcome, a framework for fully automated PD-L1 quantification on tumor cells and immune cells was established and validated. Automated PD-L1 quantification was facilitated by incorporating three different deep learning steps for the analysis of more than 80 different neoplasms from more than 10’000 tumor specimens using a bleach & stain 15-marker multiplex fluorescence immunohistochemistry panel (i.e., PD-L1, PD-1, CTLA-4, panCK, CD68, CD163, CD11c, iNOS, CD3, CD8, CD4, FOXP3, CD20, Ki67, CD31). Clinicopathological parameter were available for more than 30 tumor entities and overall survival data were available for 1517 breast cancer specimens.ResultsComparing the automated deep-learning based PD-L1 quantification with conventional brightfield PD-L1 data revealed a high concordance in tumor cells (p<0.0001) as well as immune cells (p<0.0001) and an accuracy of the automated PD-L1 quantification ranging from 90% to 95.2%. Across all tumor entities, the PD-L1 expression level was significantly higher in distinct macrophage/dendritic cell (DC) subsets (identified by CD68, CD163, CD11c, iNOS; p<000.1) and in macrophages/DCs located in the Stroma (p<0.0001) as compared to intratumoral macrophages/DC subsets. Across all different tumor entities, the PD-L1 expression was highly variable and distinct PD-L1 driven immune phenotypes were identified based on the PD-L1 intensity on both tumor and immune cells, the distance between non-exhausted T-cell subsets (i.e. PD-1 and CTLA-4 expression on CD3+CD8+ cytotoxic T-cells, CD3+CD4+ T-helper cells, CD3+CD4+FOXP3+ regulatory T-cells) and tumor cells as well as macrophage/(DC) subtypes. In breast cancer, the PD-L1 fluorescence intensity on tumor cells showed a significantly higher predictive performance for overall survival with an area under receiver operating curves (AUC) of 0.72 (p<0.0001) than the percentage of PD-L1+ tumor cells (AUC: 0.54). In PD-L1 positive as well as negative breast cancers a close spatial relationship between T- cell subsets (CD3+CD4±CD8±FOXP3±PD-1±CTLA-4±) and Macrophage/DC subsets (CD68±CD163±CD11c±iNOS) was found prognostic relevant (p<0.0001).ConclusionsIn conclusion, multiplex immunofluorescence PD-L1 assessment provides cutoff-free/continuous PD-L1 data which are superior to the conventional percentage of PD-L1+ tumor cells and of high prognostic relevance. The combined analysis of spatial PD-L1/PD-1 data and more than 20 different immune cell subtypes of the immune tumor microenvironment revealed distinct PD-L1 immune phenotypes.Disclosure InformationN.C. Blessin: None. E. Bady: None. T. Mandelkow: None. C. Yang: None. J. Raedler: None. R. Simon: None. C. Fraune: None. M. Lennartz: None. S. Minner: None. E. Burandt: None. D. Höflmayer: None. G. Sauter: None. S.A. Weidemann: None.
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Romano E, Simon R, Martin V, Bolle S, Andraud M, Boulle G, Kissel M, Kumar T, Martelli H, Guerin F, Deutsch E, Haie-Meder C, Chargari C. OC-1045: Dose-volume effect relationships for rectal morbidity after brachytherapy for pediatric cancers. Radiother Oncol 2020. [DOI: 10.1016/s0167-8140(21)01982-4] [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: 10/22/2022]
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Simon R, Lischer HEL, Pieńkowska-Schelling A, Keller I, Häfliger IM, Letko A, Schelling C, Lühken G, Drögemüller C. New genomic features of the polled intersex syndrome variant in goats unraveled by long-read whole-genome sequencing. Anim Genet 2020; 51:439-448. [PMID: 32060960 DOI: 10.1111/age.12918] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2019] [Revised: 01/23/2020] [Accepted: 01/23/2020] [Indexed: 01/19/2023]
Abstract
In domestic goats, the polled intersex syndrome (PIS) refers to XX female-to-male sex reversal associated with the absence of horn growth (polled). The causal variant was previously reported as a 11.7 kb deletion at approximately 129 Mb on chromosome 1 that affects the transcription of both FOXL2 and several long non-coding RNAs. In the meantime the presence of different versions of the PIS deletion was postulated and trials to establish genetic testing with the existing molecular genetic information failed. Therefore, we revisited this variant by long-read whole-genome sequencing of two genetically female (XX) goats, a PIS-affected and a horned control. This revealed the presence of a more complex structural variant consisting of a deletion with a total length of 10 159 bp and an inversely inserted approximately 480 kb-sized duplicated segment of a region located approximately 21 Mb further downstream on chromosome 1 containing two genes, KCNJ15 and ERG. Publicly available short-read whole-genome sequencing data, Sanger sequencing of the breakpoints and FISH using BAC clones corresponding to both involved genome regions confirmed this structural variant. A diagnostic PCR was developed for simultaneous genotyping of carriers for this variant and determination of their genetic sex. We showed that the variant allele was present in all 334 genotyped polled goats of diverse breeds and that all analyzed 15 PIS-affected XX goats were homozygous. Our findings enable for the first time a precise genetic diagnosis for polledness and PIS in goats and add a further genomic feature to the complexity of the PIS phenomenon.
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Affiliation(s)
- R Simon
- Institute of Animal Breeding and Genetics, Justus Liebig University, Giessen, 35390, Germany
| | - H E L Lischer
- Interfaculty Bioinformatics Unit, University of Bern, Bern, 3001, Switzerland.,Swiss Institute of Bioinformatics, Lausanne, 1015, Switzerland
| | - A Pieńkowska-Schelling
- Institute of Genetics, University of Bern, Bern, 3001, Switzerland.,Clinic of Reproductive Medicine, Vetsuisse Faculty, University of Zürich, Zürich, 8057, Switzerland
| | - I Keller
- Swiss Institute of Bioinformatics, Lausanne, 1015, Switzerland.,Department for BioMedical Research, University of Bern, Bern, 3001, Switzerland
| | - I M Häfliger
- Institute of Genetics, University of Bern, Bern, 3001, Switzerland
| | - A Letko
- Institute of Genetics, University of Bern, Bern, 3001, Switzerland
| | - C Schelling
- Clinic of Reproductive Medicine, Vetsuisse Faculty, University of Zürich, Zürich, 8057, Switzerland
| | - G Lühken
- Institute of Animal Breeding and Genetics, Justus Liebig University, Giessen, 35390, Germany
| | - C Drögemüller
- Institute of Genetics, University of Bern, Bern, 3001, Switzerland
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Kachikis A, Eckert L, Munoz F, Sienas L, Simon R, Sturkenboom M, Dodd C, Jones C, Schlaudecker E, Khalil A, Yildirim I, Wilcox C, Heath P, Buttery J, Black S. Obstetrics- versus non-obstetrics-based chart abstractor impact on ability to classify GAIA outcome definitions for potential AEFI in pregnant women and their infants in preparation for use in maternal immunization studies. Am J Obstet Gynecol 2019. [DOI: 10.1016/j.ajog.2019.10.056] [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: 10/25/2022]
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Hunziker L, Radovanovic D, Jeger R, Pedrazzini G, Cuculi F, Urban P, Erne P, Rickli H, Pilgrim T, Hess F, Simon R, Hangartner P, Hufschmid U, Hornig B, Altwegg L, Trummler S, Windecker S, Rueff T, Loretan P, Roethlisberger C, Evéquoz D, Mang G, Ryser D, Müller P, Jecker R, Kistler W, Hongler T, Stäuble S, Freiwald G, Schmid H, Stauffer J, Cook S, Bietenhard K, Roffi M, Wojtyna W, Schönenberger R, Simonin C, Waldburger R, Schmidli M, Federspiel B, Weiss E, Marty H, Weber K, Zender H, Poepping I, Hugi A, Koltai E, Iglesias J, Erne P, Heimes T, Jordan B, Pagnamenta A, Feraud P, Beretta E, Stettler C, Repond F, Widmer F, Heimgartner C, Polikar R, Bassetti S, Iselin H, Giger M, Egger P, Kaeslin T, Fischer A, Herren T, Eichhorn P, Neumeier C, Flury G, Girod G, Vogel R, Niggli B, Yoon S, Nossen J, Stoller U, Veragut U, Bächli E, Weber A, Schmidt D, Hellermann J, Eriksson U, Fischer T, Peter M, Gasser S, Fatio R, Vogt M, Ramsay D, Wyss C, Bertel O, Maggiorini M, Eberli F, Christen S. Twenty-Year Trends in the Incidence and Outcome of Cardiogenic Shock in AMIS Plus Registry. Circ Cardiovasc Interv 2019; 12:e007293. [DOI: 10.1161/circinterventions.118.007293] [Citation(s) in RCA: 54] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Affiliation(s)
- Lukas Hunziker
- Department of Cardiology, Bern University Hospital, Switzerland (L.H., T.P.)
| | - Dragana Radovanovic
- AMIS Plus Data Center, Epidemiology, Biostatistics and Prevention Institute, University of Zurich, Switzerland (D.R.)
| | - Raban Jeger
- Division of Cardiology, University Hospital Basel, Switzerland (R.J.)
| | | | - Florim Cuculi
- Heart Centre Lucerne, Luzerner Kantonsspital, Switzerland (F.C.)
| | - Philip Urban
- Cardiology Department, La Tour Hospital, Geneva, Switzerland (P.U.)
| | - Paul Erne
- Department of Biomedicine, University of Basel, Switzerland (P.E.)
| | - Hans Rickli
- Department of Cardiology, Kantonsspital St. Gallen, Switzerland (H.R.)
| | - Thomas Pilgrim
- Department of Cardiology, Bern University Hospital, Switzerland (L.H., T.P.)
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Sarrut D, Simon R, Myriam A, Line C, Thomas B, Jean-Noel B, Anne-Laure G. SP-0135 Working with radiotherapy from the perspective of data/computer scientist. Radiother Oncol 2019. [DOI: 10.1016/s0167-8140(19)30555-9] [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: 11/29/2022]
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16
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Williford DN, Jackson CB, Thomas B, Simon R, Hajduk G, Leonard L, Aballay A, Duncan CL. 263 Behavioral Principles as Part of a Summer Pediatric Burn Camp: Implications for Practice, Counselor Training, and Important Lessons Learned. J Burn Care Res 2019. [DOI: 10.1093/jbcr/irz013.186] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- D N Williford
- West Virginia University, Morgantown, WV; Allegheny Health Network/West Penn Hospital, Pittsburgh, PA
| | - C B Jackson
- West Virginia University, Morgantown, WV; Allegheny Health Network/West Penn Hospital, Pittsburgh, PA
| | - B Thomas
- West Virginia University, Morgantown, WV; Allegheny Health Network/West Penn Hospital, Pittsburgh, PA
| | - R Simon
- West Virginia University, Morgantown, WV; Allegheny Health Network/West Penn Hospital, Pittsburgh, PA
| | - G Hajduk
- West Virginia University, Morgantown, WV; Allegheny Health Network/West Penn Hospital, Pittsburgh, PA
| | - L Leonard
- West Virginia University, Morgantown, WV; Allegheny Health Network/West Penn Hospital, Pittsburgh, PA
| | - A Aballay
- West Virginia University, Morgantown, WV; Allegheny Health Network/West Penn Hospital, Pittsburgh, PA
| | - C L Duncan
- West Virginia University, Morgantown, WV; Allegheny Health Network/West Penn Hospital, Pittsburgh, PA
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Chwiej J, Palczynska M, Skoczen A, Janeczko K, Cieslak J, Simon R, Setkowicz Z. Elemental changes of hippocampal formation occurring during postnatal brain development. J Trace Elem Med Biol 2018; 49:1-7. [PMID: 29895356 DOI: 10.1016/j.jtemb.2018.04.030] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/05/2018] [Revised: 03/22/2018] [Accepted: 04/24/2018] [Indexed: 12/11/2022]
Abstract
In this paper the elemental changes of rat hippocampal formation occurring during the postnatal development were examined. Three groups of animals were used in the study. These were naive Wistar rats at the age of 6-, 30- and 60-days and the chosen life periods corresponded to the neonatal period, childhood and early adulthood in humans, respectively. For the topographic and quantitative elemental analysis X-ray fluorescence microscopy was applied and the measurements were done at the FLUO beamline of ANKA. The detailed quantitative and statistical analysis was done for four areas of hippocampal formation, namely sectors 1 and 3 of the Ammon's horn (CA1 and CA3, respectively), dentate gyrus (DG) and its internal area (hilus of DG, H). The obtained results showed that among the all examined elements (P, S, K, Ca, Fe, Cu, Zn and Se), only the levels of Fe and Zn changed significantly during postnatal development of the hippocampal formation and both the elements were significantly higher in young adults comparing to the rats in neonatal period. The increased Fe areal density was found in all examined hippocampal areas whilst Zn was elevated in CA3, DG and H. In order to follow the dynamics of age-dependent elemental changes, the statistical significance of differences in their accumulation between subsequent moments of time was examined. The obtained results showed statistically relevant increase of Zn level only in the first observation period (between 6th and 30th day of life). Afterwards the areal density of the element did not change significantly. The increase of Fe areal density took place in both examined periods, however the observed changes were small and usually not statistically relevant.
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Affiliation(s)
- J Chwiej
- AGH University of Science and Technology, Faculty of Physics and Applied Computer Science, Krakow, Poland.
| | - M Palczynska
- AGH University of Science and Technology, Faculty of Physics and Applied Computer Science, Krakow, Poland
| | - A Skoczen
- AGH University of Science and Technology, Faculty of Physics and Applied Computer Science, Krakow, Poland
| | - K Janeczko
- Jagiellonian University, Institute of Zoology and Biomedical Research, Krakow, Poland
| | - J Cieslak
- AGH University of Science and Technology, Faculty of Physics and Applied Computer Science, Krakow, Poland
| | - R Simon
- Institut fur Synchrotronstrahlung, Research Centre Karlsruhe, Karlsruhe, Germany
| | - Z Setkowicz
- Jagiellonian University, Institute of Zoology and Biomedical Research, Krakow, Poland
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18
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Martel S, Lambertini M, Simon R, Matte C, Prady C. Adherence to guidelines in requesting Oncotype DX in a publicly funded health care system. ACTA ACUST UNITED AC 2018; 25:e311-e318. [PMID: 30111977 DOI: 10.3747/co.25.3965] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Background Oncotype dx [odx (Genomic Health, Redwood City, CA, U.S.A.)] is an approved prognostic tool for women with node-negative, hormone receptor-positive, her2-negative breast cancer. Because of cost, optimal use of this test is crucial, especially in a publicly funded health care system. We evaluated adherence with our provincial guidelines for odx requests, the management of patients with an intermediate recurrence score (rs), and the cost impact of odx. Methods This retrospective study included 201 consecutive patients with an odx request from two university institutions in Quebec between May 2012 and December 2014. Concordance with provincial guidelines was estimated, with its 95% confidence interval (ci). For patients with an intermediate rs, factors influencing the final treatment decision were assessed. The cost impact of odx was derived from the proportion of patients for whom chemotherapy was not recommended. Results In 93.0% of patients (95% ci: 89.5% to 96.6%), odx was ordered according to guidelines. The concordance was similar in both institutions (92.7%; 95% ci: 88.1% to 97.3%; and 93.6%; 95% ci: 88.2% to 99.0%). In 112 (55.7%), 78 (38.8%), and 9 (4.5%) patients, the rs suggested low, intermediate, and high risk respectively. In the intermediate-risk group, most patients (n = 58, 74.4%) did not receive chemotherapy, mainly because of patient preference and the absence of a clear proven benefit. Savings of CA$100,000 for the study period (2.5 years) were estimated to be associated with odx use. Conclusions In our experience, the use of odx was concordant with published recommendations and had a positive cost impact.
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Affiliation(s)
- S Martel
- Département d'hémato-oncologie, cisss Montérégie centre/Hôpital Charles-Lemoyne, centre affilié de l'Université de Sherbrooke, Greenfield Park, QC
| | - M Lambertini
- Department of Medical Oncology and.,Breast Cancer Translational Research Laboratory, Institut Jules Bordet, Université Libre de Bruxelles, Brussels, Belgium
| | - R Simon
- Département de chirurgie and
| | - C Matte
- Département de pathologie, cisss Montérégie centre/Hôpital Charles-Lemoyne, centre affilié de l'Université de Sherbrooke, Greenfield Park, QC
| | - C Prady
- Département d'hémato-oncologie, cisss Montérégie centre/Hôpital Charles-Lemoyne, centre affilié de l'Université de Sherbrooke, Greenfield Park, QC
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Hegerle N, Bose J, Ramachandran G, Galen JE, Levine MM, Simon R, Tennant SM. Overexpression of O-polysaccharide chain length regulators in Gram-negative bacteria using the Wzx-/Wzy-dependent pathway enhances production of defined modal length O-polysaccharide polymers for use as haptens in glycoconjugate vaccines. J Appl Microbiol 2018; 125:575-585. [PMID: 29603538 PMCID: PMC6726474 DOI: 10.1111/jam.13772] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [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: 07/17/2017] [Revised: 10/20/2017] [Accepted: 03/26/2018] [Indexed: 11/30/2022]
Abstract
Aims O‐polysaccharide (OPS) molecules are protective antigens for several bacterial pathogens, and have broad utility as components of glycoconjugate vaccines. Variability in the OPS chain length is one obstacle towards further development of these vaccines. Introduction of sizing steps during purification of OPS molecules of suboptimal or of mixed lengths introduces additional costs and complexity while decreasing the final yield. The overall goal of this study was to demonstrate the utility of engineering Gram‐negative bacteria to produce homogenous O‐polysaccharide populations that can be used as the basis of carbohydrate vaccines by overexpressing O‐polysaccharide chain length regulators of the Wzx‐/Wzy‐dependent pathway. Method and Results The O‐polysaccharide chain length regulators wzzB and fepE from Salmonella Typhimurium I77 and wzz2 from Pseudomonas aeruginosa PAO1 were cloned and expressed in the homologous organism or in other Gram‐negative bacteria. Overexpression of these Wzz proteins in the homologous organism significantly increased the proportion of long or very long chain O‐polysaccharides. The same observation was made when wzzB was overexpressed in Salmonella Paratyphi A and Shigella flexneri, and wzz2 was overexpressed in two other strains of P. aeruginosa. Conclusions Overexpression of Wzz proteins in Gram‐negative bacteria using the Wzx/Wzy‐dependant pathway for lipopolysaccharide synthesis provides a genetic method to increase the production of an O‐polysaccharide population of a defined size. Significance and Impact of the Study The methods presented herein represent a cost‐effective and improved strategy for isolating preferred OPS vaccine haptens, and could facilitate the further use of O‐polysaccharides in glycoconjugate vaccine development.
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Affiliation(s)
- N Hegerle
- Center for Vaccine Development and Institute for Global Health, University of Maryland School of Medicine, Baltimore, MD, USA.,Department of Medicine, University of Maryland School of Medicine, Baltimore, MD, USA
| | - J Bose
- Center for Vaccine Development and Institute for Global Health, University of Maryland School of Medicine, Baltimore, MD, USA.,Department of Medicine, University of Maryland School of Medicine, Baltimore, MD, USA
| | - G Ramachandran
- Center for Vaccine Development and Institute for Global Health, University of Maryland School of Medicine, Baltimore, MD, USA.,Department of Medicine, University of Maryland School of Medicine, Baltimore, MD, USA
| | - J E Galen
- Center for Vaccine Development and Institute for Global Health, University of Maryland School of Medicine, Baltimore, MD, USA.,Department of Medicine, University of Maryland School of Medicine, Baltimore, MD, USA
| | - M M Levine
- Center for Vaccine Development and Institute for Global Health, University of Maryland School of Medicine, Baltimore, MD, USA.,Department of Medicine, University of Maryland School of Medicine, Baltimore, MD, USA.,Department of Pediatrics, University of Maryland School of Medicine, Baltimore, MD, USA
| | - R Simon
- Center for Vaccine Development and Institute for Global Health, University of Maryland School of Medicine, Baltimore, MD, USA.,Department of Medicine, University of Maryland School of Medicine, Baltimore, MD, USA
| | - S M Tennant
- Center for Vaccine Development and Institute for Global Health, University of Maryland School of Medicine, Baltimore, MD, USA.,Department of Medicine, University of Maryland School of Medicine, Baltimore, MD, USA
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Beauchet O, Noublanche F, Simon R, Sekhon H, Chabot J, Levinoff EJ, Kabeshova A, Launay CP. Falls Risk Prediction for Older Inpatients in Acute Care Medical Wards: Is There an Interest to Combine an Early Nurse Assessment and the Artificial Neural Network Analysis? J Nutr Health Aging 2018; 22:131-137. [PMID: 29300432 DOI: 10.1007/s12603-017-0950-z] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
BACKGROUND Identification of the risk of falls is important among older inpatients. This study aims to examine performance criteria (i.e.; sensitivity, specificity, positive predictive value, negative predictive value and accuracy) for fall prediction resulting from a nurse assessment and an artificial neural networks (ANNs) analysis in older inpatients hospitalized in acute care medical wards. METHODS A total of 848 older inpatients (mean age, 83.0±7.2 years; 41.8% female) admitted to acute care medical wards in Angers University hospital (France) were included in this study using an observational prospective cohort design. Within 24 hours after admission of older inpatients, nurses performed a bedside clinical assessment. Participants were separated into non-fallers and fallers (i.e.; ≥1 fall during hospitalization stay). The analysis was conducted using three feed forward ANNs (multilayer perceptron [MLP], averaged neural network, and neuroevolution of augmenting topologies [NEAT]). RESULTS Seventy-three (8.6%) participants fell at least once during their hospital stay. ANNs showed a high specificity, regardless of which ANN was used, and the highest value reported was with MLP (99.8%). In contrast, sensitivity was lower, with values ranging between 98.4 to 14.8%. MLP had the highest accuracy (99.7). CONCLUSIONS Performance criteria for fall prediction resulting from a bedside nursing assessment and an ANNs analysis was associated with a high specificity but a low sensitivity, suggesting that this combined approach should be used more as a diagnostic test than a screening test when considering older inpatients in acute care medical ward.
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Affiliation(s)
- O Beauchet
- Olivier Beauchet, MD, PhD; Department of Medicine, Division of Geriatric Medicine, Sir Mortimer B. Davis - Jewish General Hospital, McGill University, 3755 chemin de la Côte-Sainte-Catherine, Montréal, QC H3T 1E2, Canada; E-mail: ; Phone: (+1) 514-340-8222, # 4741; Fax: (+1) 514-340-7547
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21
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Chwiej J, Patulska A, Skoczen A, Matusiak K, Janeczko K, Ciarach M, Simon R, Setkowicz Z. Various ketogenic diets can differently support brain resistance against experimentally evoked seizures and seizure-induced elemental anomalies of hippocampal formation. J Trace Elem Med Biol 2017; 42:50-58. [PMID: 28595792 DOI: 10.1016/j.jtemb.2017.04.002] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/17/2016] [Revised: 03/13/2017] [Accepted: 04/04/2017] [Indexed: 01/09/2023]
Abstract
In this paper the influence of two different ketogenic diets (KDs) on the seizure-evoked elemental anomalies of hippocampal formation was examined. To achieve this purpose normal and pilocarpine treated rats previously fed with one of the two high fat and carbohydrate restricted diets were compared with animals on standard laboratory diet. The ketogenic ratios of the examined KDs were equal to 5:1 (KD1) and 9:1 (KD2). KD1 and standard diet fed animals presented similar patterns of seizure-evoked elemental changes in hippocampal formation. Also the analysis of behavioral data recorded after pilocarpine injection did not show any significant differences in intensity and duration of seizures between KD1 and standard diet fed animals. Higher ketogenic ratio KD2 introduced in the normal hippocampal formation prolonged changes in the accumulation of P, K, Zn and Ca. Despite this, both the intensity and duration of seizures were significantly reduced in rats fed with KD2 which suggests that its saving action on the nerve tissue may protect brain from seizure propagation. Also seizure-evoked elemental anomalies in KD2 animals were different than those observed for rats both on KD1 and standard diets. The comparison of seizure experiencing and normal rats on KD2, did not show any statistically significant differences in elemental composition of CA1 and H hippocampal areas whilst in CA3 area only Zn level changed as a result of seizures. DG was the area mostly affected by seizures in KD2 fed rats but areal densities of all examined elements increased in this hippocampal region.
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Affiliation(s)
- J Chwiej
- AGH University of Science and Technology, Faculty of Physics and Applied Computer Science, Krakow, Poland.
| | - A Patulska
- AGH University of Science and Technology, Faculty of Physics and Applied Computer Science, Krakow, Poland
| | - A Skoczen
- AGH University of Science and Technology, Faculty of Physics and Applied Computer Science, Krakow, Poland
| | - K Matusiak
- AGH University of Science and Technology, Faculty of Physics and Applied Computer Science, Krakow, Poland
| | - K Janeczko
- Jagiellonian University, Institute of Zoology, Krakow, Poland
| | - M Ciarach
- Jagiellonian University, Institute of Zoology, Krakow, Poland
| | - R Simon
- Institut fur Synchrotronstrahlung, Research Centre Karlsruhe, Karlsruhe, Germany
| | - Z Setkowicz
- Jagiellonian University, Institute of Zoology, Krakow, Poland
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22
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Budhiraja R, Kushida C, Nichols D, Walsh J, Simon R, Gottlieb D, Quan S. 0512 RESIDUAL SLEEPINESS ON CONTINUOUS POSITIVE AIRWAY PRESSURE (CPAP) THERAPY IN PATIENTS WITH OBSTRUCTIVE SLEEP APNEA (OSA). Sleep 2017. [DOI: 10.1093/sleepj/zsx050.511] [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: 11/12/2022] Open
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23
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Budhiraja R, Kushida C, Nichols D, Walsh J, Simon R, Gottlieb D, Quan S. 0455 PREVALENCE AND PREDICTORS OF SUBJECTIVE AND OBJECTIVE SLEEPINESS IN PATIENTS WITH OBSTRUCTIVE SLEEP APNEA (OSA). Sleep 2017. [DOI: 10.1093/sleepj/zsx050.454] [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: 11/12/2022] Open
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24
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Thewes V, Simon R, Hlevnjak M, Schlotter M, Schroeter P, Schmidt K, Wu Y, Anzeneder T, Wang W, Windisch P, Kirchgäßner M, Melling N, Kneisel N, Büttner R, Deuschle U, Sinn HP, Schneeweiss A, Heck S, Kaulfuss S, Hess-Stumpp H, Okun JG, Sauter G, Lykkesfeldt AE, Zapatka M, Radlwimmer B, Lichter P, Tönjes M. The branched-chain amino acid transaminase 1 sustains growth of antiestrogen-resistant and ERα-negative breast cancer. Oncogene 2017; 36:4124-4134. [PMID: 28319069 DOI: 10.1038/onc.2017.32] [Citation(s) in RCA: 50] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2016] [Revised: 12/16/2016] [Accepted: 01/24/2017] [Indexed: 12/24/2022]
Abstract
Antiestrogen-resistant and triple-negative breast tumors pose a serious clinical challenge because of limited treatment options. We assessed global gene expression changes in antiestrogen-sensitive compared with antiestrogen-resistant (two tamoxifen resistant and two fulvestrant resistant) MCF-7 breast cancer cell lines. The branched-chain amino acid transaminase 1 (BCAT1), which catalyzes the first step in the breakdown of branched-chain amino acids, was among the most upregulated transcripts in antiestrogen-resistant cells. Elevated BCAT1 expression was confirmed in relapsed tamoxifen-resistant breast tumor specimens. High intratumoral BCAT1 levels were associated with a reduced relapse-free survival in adjuvant tamoxifen-treated patients and overall survival in unselected patients. On a tissue microarray (n=1421), BCAT1 expression was detectable in 58% of unselected primary breast carcinomas and linked to a higher Ki-67 proliferation index, as well as histological grade. Interestingly, BCAT1 was predominantly expressed in estrogen receptor-α-negative/human epidermal growth factor receptor-2-positive (ERα-negative/HER-2-positive) and triple-negative breast cancers in independent patient cohorts. The inverse relationship between BCAT1 and ERα was corroborated in various breast cancer cell lines and pharmacological long-term depletion of ERα induced BCAT1 expression in vitro. Mechanistically, BCAT1 indirectly controlled expression of the cell cycle inhibitor p27Kip1 thereby affecting pRB. Correspondingly, phenotypic analyses using a lentiviral-mediated BCAT1 short hairpin RNA knockdown revealed that BCAT1 sustains proliferation in addition to migration and invasion and that its overexpression enhanced the capacity of antiestrogen-sensitive cells to grow in the presence of antiestrogens. Importantly, silencing of BCAT1 in an orthotopic triple-negative xenograft model resulted in a massive reduction of tumor volume in vivo, supporting our findings that BCAT1 is necessary for the growth of hormone-independent breast tumors.
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Affiliation(s)
- V Thewes
- Division of Molecular Genetics, German Cancer Consortium (DKTK), German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - R Simon
- Institute of Pathology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - M Hlevnjak
- Division of Molecular Genetics, German Cancer Consortium (DKTK), German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - M Schlotter
- Division of Molecular Genetics, German Cancer Consortium (DKTK), German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - P Schroeter
- Division of Molecular Genetics, German Cancer Consortium (DKTK), German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - K Schmidt
- Division of Inherited Metabolic Diseases, University Children's Hospital, Heidelberg, Germany
| | - Y Wu
- Division of Molecular Genetics, German Cancer Consortium (DKTK), German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - T Anzeneder
- PATH Foundation Biobank-Patients' Tumor Bank of Hope, Munich, Germany
| | - W Wang
- Division of Molecular Genetics, German Cancer Consortium (DKTK), German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - P Windisch
- Division of Molecular Genetics, German Cancer Consortium (DKTK), German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - M Kirchgäßner
- Division of Molecular Genetics, German Cancer Consortium (DKTK), German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - N Melling
- Institute of Pathology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - N Kneisel
- Division of Molecular Genetics, German Cancer Consortium (DKTK), German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - R Büttner
- Institute of Pathology, University Hospital Cologne, Cologne, Germany
| | - U Deuschle
- Phenex Pharmaceuticals AG, Heidelberg, Germany
| | - H P Sinn
- Institute of Pathology, University of Heidelberg, Heidelberg, Germany
| | - A Schneeweiss
- Gynecologic Oncology, National Center for Tumor Diseases, University of Heidelberg, Heidelberg, Germany
| | - S Heck
- Division of Molecular Genetics, German Cancer Consortium (DKTK), German Cancer Research Center (DKFZ), Heidelberg, Germany
| | | | | | - J G Okun
- Division of Inherited Metabolic Diseases, University Children's Hospital, Heidelberg, Germany
| | - G Sauter
- Institute of Pathology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - A E Lykkesfeldt
- Breast Cancer Group, Danish Cancer Society Research Center, Copenhagen, Denmark
| | - M Zapatka
- Division of Molecular Genetics, German Cancer Consortium (DKTK), German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - B Radlwimmer
- Division of Molecular Genetics, German Cancer Consortium (DKTK), German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - P Lichter
- Division of Molecular Genetics, German Cancer Consortium (DKTK), German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - M Tönjes
- Division of Molecular Genetics, German Cancer Consortium (DKTK), German Cancer Research Center (DKFZ), Heidelberg, Germany
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Hinsch A, Buchholz M, Odinga S, Borkowski C, Koop C, Izbicki JR, Wurlitzer M, Krech T, Wilczak W, Steurer S, Jacobsen F, Burandt EC, Stahl P, Simon R, Sauter G, Schlüter H. MALDI imaging mass spectrometry reveals multiple clinically relevant masses in colorectal cancer using large-scale tissue microarrays. J Mass Spectrom 2017; 52:165-173. [PMID: 28117928 DOI: 10.1002/jms.3916] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/12/2016] [Revised: 01/13/2017] [Accepted: 01/19/2017] [Indexed: 06/06/2023]
Abstract
For identification of clinically relevant masses to predict status, grade, relapse and prognosis of colorectal cancer, we applied Matrix-assisted laser desorption ionization (MALDI) imaging mass spectrometry (IMS) to a tissue micro array containing formalin-fixed and paraffin-embedded tissue samples from 349 patients. Analysis of our MALDI-IMS data revealed 27 different m/z signals associated with epithelial structures. Comparison of these signals showed significant association with status, grade and Ki-67 labeling index. Fifteen out of 27 IMS signals revealed a significant association with survival. For seven signals (m/z 654, 776, 788, 904, 944, 975 and 1013) the absence and for eight signals (m/z 643, 678, 836, 886, 898, 1095, 1459 and 1477) the presence were associated with decreased life expectancy, including five masses (m/z 788, 836, 904, 944 and 1013) that provided prognostic information independently from the established prognosticators pT and pN. Combination of these five masses resulted in a three-step classifier that provided prognostic information superior to univariate analysis. In addition, a total of 19 masses were associated with tumor stage, grade, metastasis and cell proliferation. Our data demonstrate the suitability of combining IMS and large-scale tissue micro arrays to simultaneously identify and validate clinically useful molecular marker. Copyright © 2017 John Wiley & Sons, Ltd.
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Affiliation(s)
- A Hinsch
- Department of Pathology, University Medical Center Hamburg-Eppendorf, Martinistr. 52, 20246, Hamburg, Germany
| | - M Buchholz
- Department of Pathology, University Medical Center Hamburg-Eppendorf, Martinistr. 52, 20246, Hamburg, Germany
| | - S Odinga
- Department of Pathology, University Medical Center Hamburg-Eppendorf, Martinistr. 52, 20246, Hamburg, Germany
| | - C Borkowski
- Department of Pathology, University Medical Center Hamburg-Eppendorf, Martinistr. 52, 20246, Hamburg, Germany
| | - C Koop
- Department of Pathology, University Medical Center Hamburg-Eppendorf, Martinistr. 52, 20246, Hamburg, Germany
| | - J R Izbicki
- Department of General, Visceral and Thoracic Surgery, University Medical Center Hamburg-Eppendorf, Martinistr. 52, 20246, Hamburg, Germany
| | - M Wurlitzer
- Dept. of Clinical Chemistry, University Medical Center Hamburg-Eppendorf, Martinistr. 52, 20246, Hamburg, Germany
| | - T Krech
- Department of Pathology, University Medical Center Hamburg-Eppendorf, Martinistr. 52, 20246, Hamburg, Germany
| | - W Wilczak
- Department of Pathology, University Medical Center Hamburg-Eppendorf, Martinistr. 52, 20246, Hamburg, Germany
| | - S Steurer
- Department of Pathology, University Medical Center Hamburg-Eppendorf, Martinistr. 52, 20246, Hamburg, Germany
| | - F Jacobsen
- Department of Pathology, University Medical Center Hamburg-Eppendorf, Martinistr. 52, 20246, Hamburg, Germany
| | - E-C Burandt
- Department of Pathology, University Medical Center Hamburg-Eppendorf, Martinistr. 52, 20246, Hamburg, Germany
| | - P Stahl
- Department of Pathology, University Medical Center Hamburg-Eppendorf, Martinistr. 52, 20246, Hamburg, Germany
| | - R Simon
- Department of Pathology, University Medical Center Hamburg-Eppendorf, Martinistr. 52, 20246, Hamburg, Germany
| | - G Sauter
- Department of Pathology, University Medical Center Hamburg-Eppendorf, Martinistr. 52, 20246, Hamburg, Germany
| | - H Schlüter
- Dept. of Clinical Chemistry, University Medical Center Hamburg-Eppendorf, Martinistr. 52, 20246, Hamburg, Germany
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Martel S, Prady C, Simon R, Matte C. Abstract P2-05-30: OncotypeDX® for breast cancer: A multigene assay that makes a difference? Cancer Res 2017. [DOI: 10.1158/1538-7445.sabcs16-p2-05-30] [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
Objective: OncotypeDX® (ODX) is a multigene diagnostic assay that can estimate the 10 year-risk of distant recurrence in women with hormone receptor positive (HR+) and node negative (N–) early breast cancer. The testreports a Recurrence Score® (RS) and three risk group categories have been described: low-risk (<18), intermediate-risk (18-30) and high-risk (≥31). It helps the oncologist in the adjuvant chemotherapy decision process and globally leads to a reduction in the recommendation for chemotherapy use. This test is expensive and represents an economic burden in a publicly funded province. Nonetheless, its use has been approved over other gene expression profiling like Mammaprint® based on the evidence of its prognostic and predictive ability. We evaluated the adequacy of the requests for the ODX in an academic setting after the introduction in May 2012 of a reference framework for its use in Québec, Canada and the impact on chemotherapy recommendation. The costs generated by the test were also determined. Methods: We included all patients with an ODX request from two University Centers, CICM and CHUS, and estimated the concordance with the current provincial guideline for which an ODX may be ordered (invasive breast cancer HR+/Her2–/N- that is T1b with unfavorable characteristics or T1c or T2). For the intermediate-risk group, the factors influencing the final decision to use systemic chemotherapy were analysed. The projected cost-effectiveness of the ODX was derived from the proportion of patients (pts) for which the chemotherapy was not recommended. Results: Between May 2012 and December 2014, a total of 201 pts, 123 pts from CICM and 78 from CHUS, had an ODX done. In 93,0% (95%CI, 89,5-96,6) of pts, ODX was ordered correctly with respect to the guideline. There was no statistical differences between both sites (CICM: 92,7% [95%CI, 97,3-88,1]; CHUS 93,6% [95%CI, 88,2-99,0]). A total of 9 pts had high-risk RS (4,5%), 78 pts had intermediate-risk RS (38,8%) and 112 pts had low-risk RS (55,7%). Chemotherapy was recommended for 31 pts (18,2%) instead of an estimated 58,0% prior to the use of ODX according to previous reports published. In the intermediate-risk group, the majority of pts (74,4%) did not receive chemotherapy. The patient's preference and the absence of a proven benefit were the main reasons for withholding chemotherapy in this group. The additional cost associated with the use of the ODX was compensated with the reduction of the adjuvant systemic chemotherapy prescribed and its derived expenses (chemotherapy cost, nursing time and hospitalisations) and savings of 100 K were observed. Conclusions: In early breast cancer HR+ and N-, the use of ODX in two University Hospitals is concordant with published recommendations. ODX use is cost effective. This benefice does not take into account the psychological burden that comes with the decision to use adjuvant chemotherapy; neither does it evaluate potential long term complications. The widespread use of ODX must be looked at critically in face of other emerging gene signature tests like Endopredict® and PAM50®. As for the predictive ability of the ODX for adjuvant chemotherapy, one can question the strength of the actual evidence and argue if it confers this test an advantage over other multigene assays.
Citation Format: Martel S, Prady C, Simon R, Matte C. OncotypeDX® for breast cancer: A multigene assay that makes a difference? [abstract]. In: Proceedings of the 2016 San Antonio Breast Cancer Symposium; 2016 Dec 6-10; San Antonio, TX. Philadelphia (PA): AACR; Cancer Res 2017;77(4 Suppl):Abstract nr P2-05-30.
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Affiliation(s)
- S Martel
- CISSS Montérégie-Centre/Hôpital Charles-LeMoyne, Greenfield Park, QC, Canada
| | - C Prady
- CISSS Montérégie-Centre/Hôpital Charles-LeMoyne, Greenfield Park, QC, Canada
| | - R Simon
- CISSS Montérégie-Centre/Hôpital Charles-LeMoyne, Greenfield Park, QC, Canada
| | - C Matte
- CISSS Montérégie-Centre/Hôpital Charles-LeMoyne, Greenfield Park, QC, Canada
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Rauwolf M, Turyanskaya A, Roschger A, Prost J, Simon R, Scharf O, Radtke M, Schoonjans T, Guilherme Buzanich A, Klaushofer K, Wobrauschek P, Hofstaetter JG, Roschger P, Streli C. Synchrotron radiation micro X-ray fluorescence spectroscopy of thin structures in bone samples: comparison of confocal and color X-ray camera setups. J Synchrotron Radiat 2017; 24:307-311. [PMID: 28009572 PMCID: PMC5182026 DOI: 10.1107/s1600577516017057] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/24/2016] [Accepted: 10/24/2016] [Indexed: 06/06/2023]
Abstract
In the quest for finding the ideal synchrotron-radiation-induced imaging method for the investigation of trace element distributions in human bone samples, experiments were performed using both a scanning confocal synchrotron radiation micro X-ray fluorescence (SR-µXRF) (FLUO beamline at ANKA) setup and a full-field color X-ray camera (BAMline at BESSY-II) setup. As zinc is a trace element of special interest in bone, the setups were optimized for its detection. The setups were compared with respect to count rate, required measurement time and spatial resolution. It was demonstrated that the ideal method depends on the element of interest. Although for Ca (a major constituent of the bone with a low energy of 3.69 keV for its Kα XRF line) the color X-ray camera provided a higher resolution in the plane, for Zn (a trace element in bone) only the confocal SR-µXRF setup was able to sufficiently image the distribution.
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Affiliation(s)
| | | | - A. Roschger
- Ludwig Boltzmann Institute of Osteology at the Hanusch Hospital of WGKK and AUVA Trauma Centre Meidling, Vienna, Austria
| | - J. Prost
- Atominstitut, TU Wien, Vienna, Austria
| | - R. Simon
- Forschungszentrum Karlsruhe/KIT, Institute for Synchrotron Radiation, ANKA, Karlsruhe, Germany
| | - O. Scharf
- IFG Institute of Scientific Instruments GmbH, Berlin, Germany
| | - M. Radtke
- Department of Analytical Chemistry, Bundesanstalt fuer Materialforschung und -pruefung, Berlin, Germany
| | - T. Schoonjans
- Department of Analytical Chemistry, Bundesanstalt fuer Materialforschung und -pruefung, Berlin, Germany
| | - A. Guilherme Buzanich
- Department of Analytical Chemistry, Bundesanstalt fuer Materialforschung und -pruefung, Berlin, Germany
| | - K. Klaushofer
- Ludwig Boltzmann Institute of Osteology at the Hanusch Hospital of WGKK and AUVA Trauma Centre Meidling, Vienna, Austria
| | | | - J. G. Hofstaetter
- Ludwig Boltzmann Institute of Osteology at the Hanusch Hospital of WGKK and AUVA Trauma Centre Meidling, Vienna, Austria
- Orthopaedic Hospital Vienna-Speising, Vienna, Austria
| | - P. Roschger
- Ludwig Boltzmann Institute of Osteology at the Hanusch Hospital of WGKK and AUVA Trauma Centre Meidling, Vienna, Austria
| | - C. Streli
- Atominstitut, TU Wien, Vienna, Austria
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Martin C, Papageorgiou N, Srinivasan N, Luther V, Ang R, Saberwal B, Sawhney V, Martin C, Orini M, Srinivasan N, Bhar-Amato J, Chow A, Lowe M, Simon R, Lambiase P, Providência R, Srinivasan N, Bronis K, Moscoso Costa F, Cavaco D, Adragao P, Tousoulis D, Hunter R, Schilling R, Segal O, Chow A, Rowland E, Lowe M, Lambiase P, Orini M, Providencia R, Simon R, Khan F, Segal O, Ahsan S, Chow A, Lowe M, Schilling R, Taggart P, Lambiase P, Linton N, Jamil-Copley S, Koa-Wing M, Lim P, Qureshi N, Whinnett Z, Davies D, Peters N, Kanagaratnam P, Opel A, Ullah W, Baker V, Finlay M, Dhinoja M, Earley M, Sporton S, Hunter R, Schilling R, Roy A, Perera D, Sporton S, Dhinoja M, Segal O, Lambiase P, Lowe M, Chow A, Hunter R, Rowland E, Khan F, Ezzat V, Providencia R, Earley M, Finlay M, Schilling R, Ahsan S, Bacuetes EB, Wray MW, Dhinoja MD, Earley ME, Schilling RJS, Sporton SS, Curtain J, Gajendragadkar P, Begley D, Fynn S, Grace A, Heck P, Virdee M, Salaunkey K, Agarwal S. MODERATED POSTERS (2)51GLOBAL HIGH DENSITY MAPPING OF RE-ENTRY VULNERABILITY INDEX INDENTIFIES SITES OF RIGHT VENTRICULAR ARRHYTHMIA INITIATION IN BRUGADA SYNDROME AND ARVC52THE ROLE OF ADENOSINE-GUIDED PULMONARY VEIN ISOLATION IN PATIENTS UNDERGOING ATRIAL FIBRILLATION ABLATION:AN UPDATED META-ANALYSIS53FIRST EVIDENT THAT T-PEAK AND TPEAK-TEND CORRELATE WITH RIGHT TO LEFT AND TRANSMURAL DYNAMIC DISPERSION OF REPOLARIZATION IN THE INTACT HUMAN HEART54RIPPLE MAPPING VENTRICULAR SCAR TO CHARACTERIZE CHANNELS SUPPORTING RE-ENTRANT TACHYCARDIA AS A GUIDE TO ABLATION55LONG TERM DURABILITY OF PULMONARY VEIN ISOLATION: INSIGHTS FROM A RANDOMISED TRIAL OF CRYOBALLOON VERSUS RADIOFREQUENCY ABLATION FOR A COMBINED APPROACH56A SINGLE-CENTRE EXPERIENCE OF THE CONVERGENT PROCEDURE FOR THE TREATMENT OF LONG-STANDING PERSISTENT ATRIAL FIBRILLATION57MODERATE SEDATION IN THE CARDIAC ELECTROPHYSIOLOGY LABORATORY: A RETROSPECTIVE ANALYSIS TO ASSESS SAFETY58USE OF GENERAL ANAESTHESIA IN CATHETER ABLATION OF PERSISTENT AF: IMPROVED OUTCOME AND COST EFFECTIVENESS:. Europace 2016. [DOI: 10.1093/europace/euw269] [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: 11/13/2022] Open
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Reddy SG, Prabhakar S, Chithrabhanu P, Singh RP, Simon R. Polarization state transformation using two quarter wave plates: application to Mueller polarimetry. Appl Opt 2016; 55:B14-B19. [PMID: 27140120 DOI: 10.1364/ao.55.000b14] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/28/2015] [Accepted: 12/10/2015] [Indexed: 06/05/2023]
Abstract
We show that there are a number of ways to transform an arbitrary polarization state into another with just two quarter wave plates (QWPs). We have verified this geometrically using the trajectories of the initial and final polarization states corresponding to all the fast axis orientations of a QWP on the Poincaré sphere. The exact analytical expression for the locus of polarization states has also been given, and describes the trajectory. An analytical treatment of the equations obtained through matrix operations corresponding to the transformation supports the geometrical representation. This knowledge can be used to obtain the Mueller matrix by just using QWPs, which has been shown experimentally by exploiting projections of the output states on the input states.
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Simon R, Baumann L, Fischer J, Seigfried FA, De Bruyckere E, Liu P, Jenkins NA, Copeland NG, Schwegler H, Britsch S. Structure-function integrity of the adult hippocampus depends on the transcription factor Bcl11b/Ctip2. Genes Brain Behav 2016; 15:405-19. [PMID: 26915960 PMCID: PMC4832350 DOI: 10.1111/gbb.12287] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/28/2015] [Revised: 02/16/2016] [Accepted: 02/22/2016] [Indexed: 12/31/2022]
Abstract
The dentate gyrus is one of the only two brain regions where adult neurogenesis occurs. Throughout life, cells of the neuronal stem cell niche undergo proliferation, differentiation and integration into the hippocampal neural circuitry. Ongoing adult neurogenesis is a prerequisite for the maintenance of adult hippocampal functionality. Bcl11b, a zinc finger transcription factor, is expressed by postmitotic granule cells in the developing as well as adult dentate gyrus. We previously showed a critical role of Bcl11b for hippocampal development. Whether Bcl11b is also required for adult hippocampal functions has not been investigated. Using a tetracycline‐dependent inducible mouse model under the control of the forebrain‐specific CaMKIIα promoter, we show here that the adult expression of Bcl11b is essential for survival, differentiation and functional integration of adult‐born granule cell neurons. In addition, Bcl11b is required for survival of pre‐existing mature neurons. Consequently, loss of Bcl11b expression selectively in the adult hippocampus results in impaired spatial working memory. Together, our data uncover for the first time a specific role of Bcl11b in adult hippocampal neurogenesis and function.
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Affiliation(s)
- R Simon
- Institute of Molecular and Cellular Anatomy, Ulm University, Ulm
| | - L Baumann
- Institute of Molecular and Cellular Anatomy, Ulm University, Ulm.,Institute of Pathology and Neuropathology, University of Tübingen, Tübingen
| | - J Fischer
- Institute of Molecular and Cellular Anatomy, Ulm University, Ulm
| | - F A Seigfried
- Institute of Molecular and Cellular Anatomy, Ulm University, Ulm.,Institute of Biochemistry and Molecular Biology, Ulm University, Ulm, Germany
| | - E De Bruyckere
- Institute of Molecular and Cellular Anatomy, Ulm University, Ulm
| | - P Liu
- Wellcome Trust Sanger Institute, Cambridge, UK
| | - N A Jenkins
- Houston Methodist Research Institute, Houston, TX, USA
| | - N G Copeland
- Houston Methodist Research Institute, Houston, TX, USA
| | - H Schwegler
- Institute of Anatomy, Otto-von-Guericke-University, Magdeburg, Germany
| | - S Britsch
- Institute of Molecular and Cellular Anatomy, Ulm University, Ulm
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Chwiej J, Patulska A, Skoczen A, Janeczko K, Ciarach M, Simon R, Setkowicz Z. Elemental changes in the hippocampal formation following two different formulas of ketogenic diet: an X-ray fluorescence microscopy study. J Biol Inorg Chem 2015; 20:1277-86. [PMID: 26537249 PMCID: PMC4661185 DOI: 10.1007/s00775-015-1306-y] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [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: 07/16/2015] [Accepted: 10/21/2015] [Indexed: 01/13/2023]
Abstract
The main purpose of the following study was the determination of elemental changes occurring within hippocampal formation as a result of high-fat and carbohydrate-restricted ketogenic diet (KD). To realize it, X-ray fluorescence microscopy was applied for topographic and quantitative analysis of P, S, K, Ca, Fe, Cu, Zn and Se in hippocampal formations taken from rats fed with two different KDs and naive controls. The detailed comparisons were done for sectors 1 and 3 of the Ammon's, the dentate gyrus and hilus of dentate gyrus. The results of elemental analysis showed that the KDs induced statistically significant changes in the accumulation of P, K, Ca, Zn and Se in particular areas of hippocampal formation and these alterations strongly depended on the composition of the diets. Much greater influence on the hippocampal areal densities of examined elements was found for the KD which was characterized by a lower content of carbohydrates, higher content of fats and increased proportion of unsaturated fatty acids. The levels of P, K and Zn decreased whilst those of Ca and Se increased as a result of the treatment with the KDs.
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Affiliation(s)
- J Chwiej
- Faculty of Physics and Applied Computer Science, AGH University of Science and Technology, Krakow, Poland.
| | - A Patulska
- Faculty of Physics and Applied Computer Science, AGH University of Science and Technology, Krakow, Poland
| | - A Skoczen
- Faculty of Physics and Applied Computer Science, AGH University of Science and Technology, Krakow, Poland
| | - K Janeczko
- Institute of Zoology, Jagiellonian University, Krakow, Poland
| | - M Ciarach
- Institute of Zoology, Jagiellonian University, Krakow, Poland
| | - R Simon
- ANKA Synchrotron Radiation Facility, Karlsruhe Institute of Technology, Karlsruhe, Germany
| | - Z Setkowicz
- Institute of Zoology, Jagiellonian University, Krakow, Poland
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Goicoechea JR, Teyssier D, Etxaluze M, Goldsmith PF, Ossenkopf V, Gerin M, Bergin EA, Black JH, Cernicharo J, Cuadrado S, Encrenaz P, Falgarone E, Fuente A, Hacar A, Lis DC, Marcelino N, Melnick GJ, Müller HSP, Persson C, Pety J, Röllig M, Schilke P, Simon R, Snell RL, Stutzki J. VELOCITY-RESOLVED [C ii] EMISSION AND [C ii]/FIR MAPPING ALONG ORION WITH HERSCHEL.. ACTA ACUST UNITED AC 2015; 812. [PMID: 26568638 DOI: 10.1088/0004-637x/812/1/75] [Citation(s) in RCA: 79] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
We present the first ~7.5'×11.5' velocity-resolved (~0.2 km s-1) map of the [C ii] 158 μm line toward the Orion molecular cloud 1 (OMC 1) taken with the Herschel/HIFI instrument. In combination with far-infrared (FIR) photometric images and velocity-resolved maps of the H41α hydrogen recombination and CO J=2-1 lines, this data set provides an unprecedented view of the intricate small-scale kinematics of the ionized/PDR/molecular gas interfaces and of the radiative feedback from massive stars. The main contribution to the [C ii] luminosity (~85 %) is from the extended, FUV-illuminated face of the cloud (G0>500, nH>5×103 cm-3) and from dense PDRs (G≳104, nH≳105 cm-3) at the interface between OMC 1 and the H ii region surrounding the Trapezium cluster. Around ~15 % of the [C ii] emission arises from a different gas component without CO counterpart. The [C ii] excitation, PDR gas turbulence, line opacity (from [13C ii]) and role of the geometry of the illuminating stars with respect to the cloud are investigated. We construct maps of the L[C ii]/LFIR and LFIR/MGas ratios and show that L[C ii]/LFIR decreases from the extended cloud component (~10-2-10-3) to the more opaque star-forming cores (~10-3-10-4). The lowest values are reminiscent of the "[C ii] deficit" seen in local ultra-luminous IR galaxies hosting vigorous star formation. Spatial correlation analysis shows that the decreasing L[C ii]/LFIR ratio correlates better with the column density of dust through the molecular cloud than with LFIR/MGas. We conclude that the [C ii] emitting column relative to the total dust column along each line of sight is responsible for the observed L[C ii]/LFIR variations through the cloud.
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Affiliation(s)
- Javier R Goicoechea
- Instituto de Ciencia de Materiales de Madrid (CSIC). Calle Sor Juana Ines de la Cruz 3, E-28049 Cantoblanco, Madrid, Spain
| | - D Teyssier
- Herschel Science Centre, ESA/ESAC, P.O. Box 78, Villanueva de la Cañada, E-28691 Madrid, Spain
| | - M Etxaluze
- Instituto de Ciencia de Materiales de Madrid (CSIC). Calle Sor Juana Ines de la Cruz 3, E-28049 Cantoblanco, Madrid, Spain ; RAL Space, Rutherford Appleton Laboratory, Didcot OX11 0QX, UK
| | - P F Goldsmith
- Jet Propulsion Laboratory, California Institute of Technology, 4800 Oak Grove Drive, Pasadena, CA 91109-8099, USA
| | - V Ossenkopf
- I. Physikalisches Institut der Universität zu Köln, Zülpicher Str. 77, 50937 Köln, Germany
| | - M Gerin
- LERMA, Observatoire de Paris, PSL Research University, CNRS, Sorbonne Universités, UPMC Univ. Paris 06, F-75014, Paris, France ; École Normale Supérieure, 24 rue Lhomond, F-75005, Paris, France
| | - E A Bergin
- Department of Astronomy, University of Michigan, 500 Church Street, Ann Arbor, MI 48109, USA
| | - J H Black
- Department of Earth and Space Sciences, Chalmers University of Technology, Onsala Space Observatory, SE-43992 Onsala, Sweden
| | - J Cernicharo
- Instituto de Ciencia de Materiales de Madrid (CSIC). Calle Sor Juana Ines de la Cruz 3, E-28049 Cantoblanco, Madrid, Spain
| | - S Cuadrado
- Instituto de Ciencia de Materiales de Madrid (CSIC). Calle Sor Juana Ines de la Cruz 3, E-28049 Cantoblanco, Madrid, Spain
| | - P Encrenaz
- LERMA, Observatoire de Paris, PSL Research University, CNRS, Sorbonne Universités, UPMC Univ. Paris 06, F-75014, Paris, France
| | - E Falgarone
- LERMA, Observatoire de Paris, PSL Research University, CNRS, Sorbonne Universités, UPMC Univ. Paris 06, F-75014, Paris, France ; École Normale Supérieure, 24 rue Lhomond, F-75005, Paris, France
| | - A Fuente
- Observatorio Astronómico Nacional (OAN IGN), Apdo. 112, 28803, Alcalá de Henares, Spain
| | - A Hacar
- Institute for Astrophysics, University of Vienna, Türkenschanzstrasse 17, 1180, Vienna, Austria
| | - D C Lis
- LERMA, Observatoire de Paris, PSL Research University, CNRS, Sorbonne Universités, UPMC Univ. Paris 06, F-75014, Paris, France
| | - N Marcelino
- INAF, Istituto di Radioastronomia, via P. Gobetti 101, 40129, Bologna, Italy
| | - G J Melnick
- Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, MS 66, Cambridge, MA 02138, USA
| | - H S P Müller
- I. Physikalisches Institut der Universität zu Köln, Zülpicher Str. 77, 50937 Köln, Germany
| | - C Persson
- Department of Earth and Space Sciences, Chalmers University of Technology, Onsala Space Observatory, SE-43992 Onsala, Sweden
| | - J Pety
- Institut de Radioastronomie Millimétrique, 300 rue de la Piscine, 38406 Saint-Martin d'Héeres, France
| | - M Röllig
- I. Physikalisches Institut der Universität zu Köln, Zülpicher Str. 77, 50937 Köln, Germany
| | - P Schilke
- I. Physikalisches Institut der Universität zu Köln, Zülpicher Str. 77, 50937 Köln, Germany
| | - R Simon
- I. Physikalisches Institut der Universität zu Köln, Zülpicher Str. 77, 50937 Köln, Germany
| | - R L Snell
- Department of Astronomy, University of Massachusetts, LGRT-B 619E, 710 North Pleasant Street, Amherst, MA 01003, USA
| | - J Stutzki
- I. Physikalisches Institut der Universität zu Köln, Zülpicher Str. 77, 50937 Köln, Germany
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Arslan A, Flax L, Nunez P, Kanter M, Fraser R, Caputo N, Simon R. 347 Detecting Occult Shock in Trauma Patients: A Comparison of Serum Lactate versus Shock Index. Ann Emerg Med 2015. [DOI: 10.1016/j.annemergmed.2015.07.383] [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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Boyer F, Simon R. Asymmetric cell divisions constructing Arabidopsis stem cell niches: the emerging role of protein phosphatases. Plant Biol (Stuttg) 2015; 17:935-45. [PMID: 26012742 DOI: 10.1111/plb.12352] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/20/2015] [Accepted: 05/18/2015] [Indexed: 05/07/2023]
Abstract
Plant stem cell niches (SCNs) can be maintained in time through asymmetric cell divisions (ACDs) that allow the production of new cell types while constantly renewing the pools of stem cells (SCs). ACDs in plants require the asymmetric distribution of molecular components inside the cells as well as external asymmetric positional information. These two types of asymmetric information are controlled by inter- and intracellular signalling events. Phosphorylation of proteins is a major intermediate step in these signalling events, serving either as an activator or repressor of signalling, via fast auto- and trans-phosphorylation mechanisms. Whereas protein kinases, which phosphorylate proteins on serine, threonine or tyrosine residues, have been thoroughly studied, less attention has been given to protein phosphatases, which de-phosphorylate their protein targets on these same residues. Phosphatases modulate the activity of signalling pathways by balancing the action of kinases, and are therefore critical in the regulation of ACDs in plants. In this review, we first present the different types of ACDs that operate during Arabidopsis embryonic and post-embryonic development and participate in the construction and maintenance of its root and shoot SCNs; we then give a brief description of the main protein phosphatases so far described in the Arabidopsis genome; and finally discuss their functions toward the regulation of the ACDs introduced in the first part of the paper.
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Affiliation(s)
- F Boyer
- Institute of Developmental Genetics, Heinrich Heine University, Düsseldorf, Germany
| | - R Simon
- Institute of Developmental Genetics, Heinrich Heine University, Düsseldorf, Germany
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Lebok P, Mittenzwei A, Kluth M, Özden C, Taskin B, Hussein K, Möller K, Hartmann A, Lebeau A, Witzel I, Mahner S, Wölber L, Jänicke F, Geist S, Paluchowski P, Wilke C, Heilenkötter U, Simon R, Sauter G, Terracciano L, Krech R, von der Assen A, Müller V, Burandt E. 8p deletion is strongly linked to poor prognosis in breast cancer. Cancer Biol Ther 2015; 16:1080-7. [PMID: 25961141 DOI: 10.1080/15384047.2015.1046025] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022] Open
Abstract
Deletions of chromosome 8p occur frequently in breast cancers, but analyses of its clinical relevance have been limited to small patient cohorts and provided controversial results. A tissue microarray with 2,197 breast cancers was thus analyzed by fluorescence in-situ hybridization using an 8p21 probe in combination with a centromere 8 reference probe. 8p deletions were found in 50% of carcinomas with no special type, 67% of papillary, 28% of tubular, 37% of lobular cancers and 56% of cancers with medullary features. Deletions were always heterozygous. 8p deletion was significantly linked to advanced tumor stage (P < 0.0001), high-grade (P < 0.0001), high tumor cell proliferation (Ki67 Labeling Index; P < 0.0001), and shortened overall survival (P < 0.0001). For example, 8p deletion was seen in 32% of 290 grade 1, 43% of 438 grade 2, and 65% of 427 grade 3 cancers. In addition, 8p deletions were strongly linked to amplification of MYC (P < 0.0001), HER2 (P < 0.0001), and CCND1 (p = 0.001), but inversely associated with ER receptor expression (p = 0.0001). Remarkably, 46.5% of 8p-deleted cancers harbored amplification of at least one of the analyzed genes as compared to 27.5% amplifications in 8p-non-deleted cancers (P < 0.0001). In conclusion, 8p deletion characterizes a subset of particularly aggressive breast cancers. As 8p deletions are easy to analyze, this feature appears to be highly suited for future DNA based prognostic breast cancer panels. The strong link of 8p deletion with various gene amplifications raises the possibility of a role for regulating genomic stability.
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Key Words
- 8p
- ER, estrogen receptor
- FISH
- FISH, fluorescence in situ hybridization
- HER2, human epidermal growth factor receptor 2
- Ki67LI, Ki67 Labeling index
- LOH, loss of heterozygosity
- NGS, next generation sequencing
- NST, no special type
- PR, progesterone receptor
- TMA, tissue microarray
- breast cancer
- deletion
- pN, nodal stage
- pT, pathological tumor stage
- prognosis
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Affiliation(s)
- P Lebok
- a Institute of Pathology; University Medical Center Hamburg-Eppendorf ; Hamburg , Germany
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Simon R, Blumenthal GM, Rothenberg ML, Sommer J, Roberts SA, Armstrong DK, LaVange LM, Pazdur R. The role of nonrandomized trials in the evaluation of oncology drugs. Clin Pharmacol Ther 2015; 97:502-7. [DOI: 10.1002/cpt.86] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2014] [Revised: 12/22/2014] [Accepted: 02/03/2015] [Indexed: 02/02/2023]
Affiliation(s)
- R Simon
- National Cancer Institute; Bethesda Maryland USA
| | - GM Blumenthal
- Food and Drug Administration (FDA); Silver Spring Maryland USA
| | | | - J Sommer
- Chordoma Foundation; Durham North Carolina USA
| | - SA Roberts
- Friends of Cancer Research; Washington DC USA
| | - DK Armstrong
- Johns-Hopkins Kimmel Cancer Center; Baltimore Maryland USA
| | - LM LaVange
- Food and Drug Administration (FDA); Silver Spring Maryland USA
| | - R Pazdur
- Pfizer, Inc.; New York New York USA
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Babu GG, Webber M, Kumar S, Gopalamurugan A, Ahsan S, Khan F, Simon R, Lambiase P, Chow A, Lowe M, Rowland E, Segal O. 10Chronic kidney disease - an independent risk factor for sustained VT/VF in heart failure patients with primary prevention CRT-D devices. ACTA ACUST UNITED AC 2014. [DOI: 10.1093/europace/euu237.4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
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Segal SK, Simon R, McFarlin S, Alkire M, Desai A, Cahill LF. Glucocorticoids interact with noradrenergic activation at encoding to enhance long-term memory for emotional material in women. Neuroscience 2014; 277:267-72. [PMID: 25010401 DOI: 10.1016/j.neuroscience.2014.06.059] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2013] [Revised: 06/25/2014] [Accepted: 06/26/2014] [Indexed: 10/25/2022]
Abstract
Evidence from the animal literature suggests that post-training glucocorticoids (GCs) interact with noradrenergic activation at acquisition to enhance memory consolidation for emotional stimuli. While there is evidence that GCs enhance memory for emotional material in humans, the extent to which this depends on noradrenergic activation at encoding has not been explored. In this study, 20-mg hydrocortisone was administered to healthy young women (18-35 yrs old) in a double-blind fashion 10 min prior to viewing a series of emotional and neutral images. Saliva samples were taken at baseline, 10 min after drug or placebo administration, immediately after viewing the images, 10, 20, and 30 min after viewing the images. Participants returned 1 week later for a surprise recall test. Results suggest that, hydrocortisone administration resulted in emotional memory enhancement only in participants who displayed an increase in endogenous noradrenergic activation, measured via salivary alpha-amylase at encoding. These results support findings in the animal literature, and suggest that GC-induced memory enhancement relies on noradrenergic activation at encoding in women.
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Affiliation(s)
- S K Segal
- Center for the Neurobiology of Learning and Memory and the Department of Neurobiology and Behavior, University of California, Irvine, CA 92627, United States.
| | - R Simon
- Center for the Neurobiology of Learning and Memory and the Department of Neurobiology and Behavior, University of California, Irvine, CA 92627, United States.
| | - S McFarlin
- Center for the Neurobiology of Learning and Memory and the Department of Neurobiology and Behavior, University of California, Irvine, CA 92627, United States.
| | - M Alkire
- Center for the Neurobiology of Learning and Memory and the Department of Neurobiology and Behavior, University of California, Irvine, CA 92627, United States.
| | - A Desai
- Center for the Neurobiology of Learning and Memory and the Department of Neurobiology and Behavior, University of California, Irvine, CA 92627, United States.
| | - L F Cahill
- Center for the Neurobiology of Learning and Memory and the Department of Neurobiology and Behavior, University of California, Irvine, CA 92627, United States.
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Wik E, Trovik J, Kusonmano K, Birkeland E, Raeder MB, Pashtan I, Hoivik EA, Krakstad C, Werner HMJ, Holst F, Mjøs S, Halle MK, Mannelqvist M, Mauland KK, Oyan AM, Stefansson IM, Petersen K, Simon R, Cherniack AD, Meyerson M, Kalland KH, Akslen LA, Salvesen HB. Endometrial Carcinoma Recurrence Score (ECARS) validates to identify aggressive disease and associates with markers of epithelial-mesenchymal transition and PI3K alterations. Gynecol Oncol 2014; 134:599-606. [PMID: 24995579 DOI: 10.1016/j.ygyno.2014.06.026] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2014] [Revised: 06/21/2014] [Accepted: 06/25/2014] [Indexed: 10/25/2022]
Abstract
PURPOSE Our previously reported 29-gene expression signature identified an aggressive subgroup of endometrial cancer patients with PI3K activation. We here wanted to validate these findings by independent patient series. PATIENTS AND METHODS The 29-gene expression signature was assessed in fresh frozen tumor tissue from 280 primary endometrial carcinomas (three independent cohorts), 19 metastatic lesions and in 333 primary endometrial carcinomas using TCGA data, and expression was related to clinico-pathologic features and survival. The 29-gene signature was assessed by real-time quantitative PCR, DNA oligonucleotide microarrays, or RNA sequencing. PI3K alterations were assessed by immunohistochemistry, DNA microarrays, DNA sequencing, SNP arrays or fluorescence in situ hybridization. A panel of markers of epithelial-mesenchymal transition (EMT) was also correlated to the 29-gene signature score. RESULTS High 29-gene Endometrial Carcinoma Recurrence Score (ECARS) values consistently validated to identify patients with aggressive clinico-pathologic phenotype and reduced survival. Within the presumed favorable subgroups of low grade, endometrioid tumors confined to the uterus, high ECARS still predicted a poor prognosis. The score was higher in metastatic compared to primary lesions (P<0.001) and was significantly associated with potential measures of PI3K activation, markers of EMT and vascular invasion as an indicator of metastatic spread (all P<0.001). CONCLUSIONS ECARS validates to identify aggressive endometrial carcinomas in multiple, independent patients cohorts. The higher signature score in metastatic compared to primary lesions, and the potential link to PI3K activation and EMT, support further studies of ECARS in relation to response to PI3K and EMT inhibitors in clinical trials of metastatic endometrial carcinoma.
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Affiliation(s)
- E Wik
- Centre for Cancer Biomarkers CCBIO, Department of Clinical Medicine, University of Bergen, Norway; Department of Pathology, The Gade Institute, Haukeland University Hospital, Bergen, Norway.
| | - J Trovik
- Department of Obstetrics and Gynecology, Haukeland University Hospital, Bergen, Norway; Centre for Cancer Biomarkers CCBIO, Department of Clinical Science, University of Bergen, Norway
| | - K Kusonmano
- Department of Obstetrics and Gynecology, Haukeland University Hospital, Bergen, Norway; Computational Biology Unit, University of Bergen, Bergen, Norway
| | - E Birkeland
- Centre for Cancer Biomarkers CCBIO, Department of Clinical Medicine, University of Bergen, Norway; Department of Pathology, The Gade Institute, Haukeland University Hospital, Bergen, Norway
| | - M B Raeder
- Department of Obstetrics and Gynecology, Haukeland University Hospital, Bergen, Norway; Centre for Cancer Biomarkers CCBIO, Department of Clinical Science, University of Bergen, Norway
| | - I Pashtan
- Department of Radiation Oncology, Dana-Farber/Brigham and Women's Cancer Center, Boston, MA, USA
| | - E A Hoivik
- Department of Obstetrics and Gynecology, Haukeland University Hospital, Bergen, Norway; Centre for Cancer Biomarkers CCBIO, Department of Clinical Science, University of Bergen, Norway
| | - C Krakstad
- Department of Obstetrics and Gynecology, Haukeland University Hospital, Bergen, Norway; Centre for Cancer Biomarkers CCBIO, Department of Clinical Science, University of Bergen, Norway
| | - H M J Werner
- Department of Obstetrics and Gynecology, Haukeland University Hospital, Bergen, Norway; Centre for Cancer Biomarkers CCBIO, Department of Clinical Science, University of Bergen, Norway
| | - F Holst
- Department of Obstetrics and Gynecology, Haukeland University Hospital, Bergen, Norway; Centre for Cancer Biomarkers CCBIO, Department of Clinical Science, University of Bergen, Norway
| | - S Mjøs
- Department of Obstetrics and Gynecology, Haukeland University Hospital, Bergen, Norway; Centre for Cancer Biomarkers CCBIO, Department of Clinical Science, University of Bergen, Norway
| | - M K Halle
- Department of Obstetrics and Gynecology, Haukeland University Hospital, Bergen, Norway; Centre for Cancer Biomarkers CCBIO, Department of Clinical Science, University of Bergen, Norway
| | - M Mannelqvist
- Centre for Cancer Biomarkers CCBIO, Department of Clinical Medicine, University of Bergen, Norway; Department of Pathology, The Gade Institute, Haukeland University Hospital, Bergen, Norway
| | - K K Mauland
- Department of Obstetrics and Gynecology, Haukeland University Hospital, Bergen, Norway; Centre for Cancer Biomarkers CCBIO, Department of Clinical Science, University of Bergen, Norway
| | - A M Oyan
- Department of Microbiology, Haukeland University Hospital, Bergen, Norway
| | - I M Stefansson
- Centre for Cancer Biomarkers CCBIO, Department of Clinical Medicine, University of Bergen, Norway; Department of Pathology, The Gade Institute, Haukeland University Hospital, Bergen, Norway
| | - K Petersen
- Computational Biology Unit, University of Bergen, Bergen, Norway
| | - R Simon
- Department of Pathology, University Medical Center Hamburg Eppendorf, Hamburg, Germany
| | - A D Cherniack
- Broad Institute of MIT and Harvard, Cambridge, MA 02142, USA
| | - M Meyerson
- Broad Institute of MIT and Harvard, Cambridge, MA 02142, USA; Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, MA 02115, USA; Department of Pathology, Brigham and Women's Hospital, Boston, MA 02115, USA
| | - K H Kalland
- Centre for Cancer Biomarkers CCBIO, Department of Clinical Science, University of Bergen, Norway; Department of Microbiology, Haukeland University Hospital, Bergen, Norway
| | - L A Akslen
- Centre for Cancer Biomarkers CCBIO, Department of Clinical Medicine, University of Bergen, Norway; Department of Pathology, The Gade Institute, Haukeland University Hospital, Bergen, Norway
| | - H B Salvesen
- Department of Obstetrics and Gynecology, Haukeland University Hospital, Bergen, Norway; Centre for Cancer Biomarkers CCBIO, Department of Clinical Science, University of Bergen, Norway
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Mukunda N, Chaturvedi S, Simon R. Classical light beams and geometric phases. J Opt Soc Am A Opt Image Sci Vis 2014; 31:1141-1157. [PMID: 24977351 DOI: 10.1364/josaa.31.001141] [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] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
We present a study of geometric phases in classical wave and polarization optics using the basic mathematical framework of quantum mechanics. Important physical situations taken from scalar wave optics, pure polarization optics, and the behavior of polarization in the eikonal or ray limit of Maxwell's equations in a transparent medium are considered. The case of a beam of light whose propagation direction and polarization state are both subject to change is dealt with, attention being paid to the validity of Maxwell's equations at all stages. Global topological aspects of the space of all propagation directions are discussed using elementary group theoretical ideas, and the effects on geometric phases are elucidated.
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Hartmann A, Schlomm T, Bertz S, Heinzelmann J, Hölters S, Simon R, Stoehr R, Junker K. [Prognostic and predictive molecular markers for urologic cancers]. Urologe A 2014; 53:491-500. [PMID: 24700189 DOI: 10.1007/s00120-014-3442-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
Molecular prognostic factors and genetic alterations as predictive markers for cancer-specific targeted therapies are used today in the clinic for many malignancies. In recent years, many molecular markers for urogenital cancers have also been identified. However, these markers are not clinically used yet. In prostate cancer, novel next-generation sequencing methods revealed a detailed picture of the molecular changes. There is growing evidence that a combination of classical histopathological and validated molecular markers could lead to a more precise estimation of prognosis, thus, resulting in an increasing number of patients with active surveillance as a possible treatment option. In patients with urothelial carcinoma, histopathological factors but also the proliferation of the tumor, mutations in oncogenes leading to an increasing proliferation rate and changes in genes responsible for invasion and metastasis are important. In addition, gene expression profiles which could distinguish aggressive tumors with high risk of metastasis from nonmetastasizing tumors have been recently identified. In the future, this could potentially allow better selection of patients needing systemic perioperative treatment. In renal cell carcinoma, many molecular markers that are associated with metastasis and survival have been identified. Some of these markers were also validated as independent prognostic markers. Selection of patients with primarily organ-confined tumors and increased risk of metastasis for adjuvant systemic therapy could be clinically relevant in the future.
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Affiliation(s)
- A Hartmann
- Institut für Pathologie, Universität Erlangen, Erlangen, Deutschland
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Tennant S, Simon R, Wang J, Pasetti M, Ernst R, Lees A, Galen J, Levine M. Bivalent vaccine strategies for invasive non-typhoidal Salmonella infections. Int J Infect Dis 2014. [DOI: 10.1016/j.ijid.2014.03.426] [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: 12/01/2022] Open
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Reddy SG, Prabhakar S, Aadhi A, Kumar A, Shah M, Singh RP, Simon R. Measuring the Mueller matrix of an arbitrary optical element with a universal SU(2) polarization gadget. J Opt Soc Am A Opt Image Sci Vis 2014; 31:610-615. [PMID: 24690659 DOI: 10.1364/josaa.31.000610] [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] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
We propose a new method for determining the Mueller matrix of an arbitrary optical element and verify it with three known optical elements. This method makes use of two universal SU(2) polarization gadgets to obtain the projection matrix directly from the experiment. It allows us to determine the Mueller matrix without precalibration of the setup, since the generated polarization states are fully determined by the azimuths of the wave plates. We calculate errors in determining the Mueller matrix and compare with other techniques.
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Simon R. Substitutive hormonal therapy in menopause women. Panminerva Med 2014; 56:285-287. [PMID: 25424462] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Affiliation(s)
- R Simon
- Department of Surgery, Charles LeMoyne Hospital CSSS Champlain_Charles‑LeMoyneCentre Intégré de Cancérologie de la Montérégie Greenfield Park, QC, Canada -
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Roschger A, Hofstaetter JG, Pemmer B, Zoeger N, Wobrauschek P, Falkenberg G, Simon R, Berzlanovich A, Thaler HW, Roschger P, Klaushofer K, Streli C. Differential accumulation of lead and zinc in double-tidemarks of articular cartilage. Osteoarthritis Cartilage 2013; 21:1707-15. [PMID: 23835117 DOI: 10.1016/j.joca.2013.06.029] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/13/2013] [Revised: 06/26/2013] [Accepted: 06/27/2013] [Indexed: 02/02/2023]
Abstract
INTRODUCTION Long-term exposure to increased lead (Pb) concentrations is associated with several chronic diseases. The divalent cation zinc (Zn) is essential for numerous enzymes. In a recent study we found remarkably elevated concentrations of Pb and Zn in the tidemark (TM), which is the mineralization front of human articular cartilage. OBJECTIVE Duplication or multiplication of TMs occurs with advancing age or degeneration. We hypothesized that trace elements accumulate in TMs as a function of time. Thus, in cases of double TMs, the deep (older) TM should contain higher Pb and Zn concentrations than the superficial (younger) TM. DESIGN Undecalcified tissue from articular cartilage and subchondral bone of femoral heads and patellae was examined by synchrotron radiation induced confocal micro X-ray fluorescence analysis and by quantitative backscattered electron imaging to determine the local distribution of Ca, Zn, and Pb in this tissue. RESULTS The evaluation of X-ray fluorescence intensities in double TMs revealed in average a 2.6-fold higher Pb level in the deep TM compared to the superficial TM while Zn concentrations were similar. Pb and Zn contents were significantly enhanced in the deep TM (Pb: 35-fold, Zn: five-fold) and in the superficial TM (Pb: 12-fold, Zn: five-fold) compared to the bone level. CONCLUSION For the first time a differential accumulation of Pb and Zn is documented in regions with double TMs revealing various timescales for the accumulation of these elements. Increased amounts of Pb are present in the TMs (up to the 62-fold of the bone level) featuring a potential source of internal Pb release if the TM region is destroyed.
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Affiliation(s)
- A Roschger
- Ludwig Boltzmann Institute of Osteology at the Hanusch Hospital of WGKK and AUVA Trauma Centre Meidling, 1st Medical Department, Hanusch Hospital, Vienna, Austria; Atominstitut, Technische Universitaet Wien, Stationallee 2, 1020 Vienna, Austria.
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Polley M, Polley E, Huang E, Freidlin B, Simon R. MC13-0049 Two-stage adaptive cutoff design for building and validating a prognostic biomarker signature. Eur J Cancer 2013. [DOI: 10.1016/s0959-8049(13)70116-3] [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: 10/26/2022]
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47
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Pemmer B, Roschger A, Wastl A, Hofstaetter J, Wobrauschek P, Simon R, Thaler H, Roschger P, Klaushofer K, Streli C. Spatial distribution of the trace elements zinc, strontium and lead in human bone tissue. Bone 2013; 57:184-93. [PMID: 23932972 PMCID: PMC3807669 DOI: 10.1016/j.bone.2013.07.038] [Citation(s) in RCA: 90] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/29/2013] [Revised: 07/25/2013] [Accepted: 07/30/2013] [Indexed: 11/15/2022]
Abstract
Trace elements are chemical elements in minute quantities, which are known to accumulate in the bone. Cortical and trabecular bones consist of bone structural units (BSUs) such as osteons and bone packets of different mineral content and are separated by cement lines. Previous studies investigating trace elements in bone lacked resolution and therefore very little is known about the local concentration of zinc (Zn), strontium (Sr) and lead (Pb) in BSUs of human bone. We used synchrotron radiation induced micro X-ray fluorescence analysis (SR μ-XRF) in combination with quantitative backscattered electron imaging (qBEI) to determine the distribution and accumulation of Zn, Sr, and Pb in human bone tissue. Fourteen human bone samples (10 femoral necks and 4 femoral heads) from individuals with osteoporotic femoral neck fractures as well as from healthy individuals were analyzed. Fluorescence intensity maps were matched with BE images and correlated with calcium (Ca) content. We found that Zn and Pb had significantly increased levels in the cement lines of all samples compared to the surrounding mineralized bone matrix. Pb and Sr levels were found to be correlated with the degree of mineralization. Interestingly, Zn intensities had no correlation with Ca levels. We have shown for the first time that there is a differential accumulation of the trace elements Zn, Pb and Sr in BSUs of human bone indicating different mechanisms of accumulation.
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Affiliation(s)
- B. Pemmer
- Atominstitut, Technische Universitaet Wien, Stadionallee 2, 1020 Vienna, Austria
- Corresponding author at: TU Wien, Atominstitut, Radiation physics, Stadionallee 2, 1020 Vienna, Austria. Fax: + 43 1 58801 14199.
| | - A. Roschger
- Atominstitut, Technische Universitaet Wien, Stadionallee 2, 1020 Vienna, Austria
- Ludwig Boltzmann Institute of Osteology at the Hanusch Hospital of WGKK and AUVA Trauma Centre Meidling, 1st Medical Department, Hanusch Hospital, Vienna, Austria
| | - A. Wastl
- Atominstitut, Technische Universitaet Wien, Stadionallee 2, 1020 Vienna, Austria
| | - J.G. Hofstaetter
- Ludwig Boltzmann Institute of Osteology at the Hanusch Hospital of WGKK and AUVA Trauma Centre Meidling, 1st Medical Department, Hanusch Hospital, Vienna, Austria
- 2nd Department, Orthopaedic Hospital Vienna-Speising, Austria
| | - P. Wobrauschek
- Atominstitut, Technische Universitaet Wien, Stadionallee 2, 1020 Vienna, Austria
| | - R. Simon
- Karlsruhe Institute of Technology, Institute for Synchrotron Radiation, Hermann-von-Helmholtz-Platz 1, D-76344 Eggenstein-Leopoldshafen, Germany
| | | | - P. Roschger
- Ludwig Boltzmann Institute of Osteology at the Hanusch Hospital of WGKK and AUVA Trauma Centre Meidling, 1st Medical Department, Hanusch Hospital, Vienna, Austria
| | - K. Klaushofer
- Ludwig Boltzmann Institute of Osteology at the Hanusch Hospital of WGKK and AUVA Trauma Centre Meidling, 1st Medical Department, Hanusch Hospital, Vienna, Austria
| | - C. Streli
- Atominstitut, Technische Universitaet Wien, Stadionallee 2, 1020 Vienna, Austria
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Lih C, Sims D, Polley E, Zhao Y, Mehaffey M, Forbes T, Harrington R, Walsh W, McGregor P, Simon R, Conley B, Kummar S, Doroshow J, Williams P. MC13-0060 Analytical validation of the MPACT assay, a targeted next generation sequencing clinical assay for cancer patient treatment selection. Eur J Cancer 2013. [DOI: 10.1016/s0959-8049(13)70117-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Bohn BA, Mina S, Krohn A, Simon R, Kluth M, Harasimowicz S, Quaas A, Bockhorn M, Izbicki JR, Sauter G, Marx A, Stahl PR. Altered PTEN function caused by deletion or gene disruption is associated with poor prognosis in rectal but not in colon cancer. Hum Pathol 2013; 44:1524-33. [PMID: 23465274 DOI: 10.1016/j.humpath.2012.12.006] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/07/2012] [Revised: 12/12/2012] [Accepted: 12/14/2012] [Indexed: 12/14/2022]
Abstract
Colorectal cancer is the third most common malignancy worldwide. Anti-epidermal growth factor receptor (EGFR)-targeted therapy shows clinical evidence in this malignancy and improves outcome. The tumor suppressor gene phosphatase and tensin homologue (PTEN) is considered a potential predictor of nonresponse to anti-EGFR agents. The purpose of this study was to assess whether associations between PTEN alterations (PTEN gene deletion or PTEN gene disruption) and clinical outcome could be caused by a prognostic (and not predictive) effect of PTEN inactivation. Therefore, we analyzed 404 colorectal cancers not previously treated with anti-EGFR drugs in a tissue microarray format. PTEN deletion and PTEN gene rearrangements were analyzed by fluorescence in situ hybridization. Heterogeneity analysis of all available large tissue sections was performed in 6 cases with genomic PTEN alteration. Twenty-seven (8.8%) of 307 analyzable colorectal cancer spots showed genomic PTEN alterations including 24 hemizygous and 1 homozygous deletion as well as 2 PTEN gene disruptions. Genomic PTEN alterations were associated with reduced patient survival in rectal cancer in univariate and multivariate analyses (P = .012; hazard ratio, 2.675; 95% confidence interval, 1.242-5.759) but not in colon cancer. Large-section evaluation revealed a homogeneous distribution pattern in all 4 analyzed cases with PTEN deletion and in both cases with a PTEN gene disruption. In conclusion, genomic PTEN gene alterations caused by deletion or gene disruption characterize a fraction of rectal cancers with particularly poor outcome.
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Affiliation(s)
- B A Bohn
- General, Visceral and Thoracic Surgery Department and Clinic, University Medical Center Hamburg-Eppendorf, Martinistrasse 52, 20246 Hamburg, Germany
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Burandt E, Jens G, Holst F, Jänicke F, Müller V, Quaas A, Choschzick M, Wilczak W, Terracciano L, Simon R, Sauter G, Lebeau A. Prognostic relevance of AIB1 (NCoA3) amplification and overexpression in breast cancer. Breast Cancer Res Treat 2013; 137:745-53. [PMID: 23322234 DOI: 10.1007/s10549-013-2406-4] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2013] [Accepted: 01/07/2013] [Indexed: 11/28/2022]
Abstract
UNLABELLED AIB1 (amplified in breast cancer 1) is an estrogen receptorα (ERα) co-activator, known to be amplified and overexpressed in a fraction of breast cancers. It has been linked to prognosis and tamoxifen resistance. However, results have been ambiguous. The different functions of AIB1 in ERα-positive and -negative disease are poorly understood. Therefore, we analyzed the clinical significance of AIB1 in breast cancer with respect to ERα-status and characterized the subgroups. 2,197 breast carcinomas sampled on a pre-existing tissue microarray (TMA) were analyzed for AIB1 expression and amplification by immunohistochemistry (IHC) and fluorescence in situ hybridization (FISH). RESULTS AIB1 expression was detected in 60 % of the tumors. It was associated with tumor size (p = 0.003), high histological grade (p < 0.0001), poor disease-specific, and overall survival (p = 0.0018 and p = 0.003). There was a strong inverse relationship between AIB1 and ERα expression (p < 0.0001). AIB1 overexpression was associated with increased Ki67 labeling index (p < 0.0001), even if analyzed for different ER expression levels. AIB1 amplification was found in 11 % of the carcinomas. It was associated with high histological grade (p = 0.0012), lymph node involvement (p = 0.0163), and poor disease-specific survival (p = 0.0032) but not with overall survival (p = 0.1672) or ER status (p = 0.4456). If ER-positive tumors were stratified according to their AIB1 amplification status, there was a significant worse disease-specific survival in cases showing AIB1 amplification (p = 0.0017). AIB1 expression is associated with unfavorable prognosis and tumor phenotype. It seems to unfold its oncogenic potential at least in part independent from its role as an ERα co-activator. AIB1 has an impact on cell cycle regulation in ERα-positive as well as ERα-negative tumors. Furthermore, AIB1 amplification characterizes a subgroup of ERα-positive breast cancer with worse outcome. Therefore, AIB1 might be helpful to identify those ERα-positive breast cancers patients who are candidates for adjuvant chemotherapy.
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Affiliation(s)
- E Burandt
- Department of Pathology, University Medical Center Hamburg-Eppendorf, Martinistrasse 52, Hamburg, Germany.
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