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  1. Article ; Online: Associations between pregnancy-related factors and birth characteristics with risk of rare uterine cancer subtypes: a Nordic population-based case-control study.

    Abril, Jazmine / Trabert, Britton / Troisi, Rebecca / Grotmol, Tom / Ekbom, Anders / Engeland, Anders / Gissler, Mika / Glimelius, Ingrid / Madanat-Harjuoja, Laura / Gulbech Ording, Anne / Sørensen, Henrik Toft / Tretli, Steinar / Bjørge, Tone

    Cancer causes & control : CCC

    2023  Volume 35, Issue 5, Page(s) 741–747

    Abstract: Purpose: Uterine sarcomas are a rare group of uterine malignancies. Due to the low incidence and changes in uterine sarcoma classification, risk factors are not well characterized. Our objective was to evaluate risk factors for uterine sarcoma and ... ...

    Abstract Purpose: Uterine sarcomas are a rare group of uterine malignancies. Due to the low incidence and changes in uterine sarcoma classification, risk factors are not well characterized. Our objective was to evaluate risk factors for uterine sarcoma and compare risk factors between uterine sarcoma, malignant mixed Mullerian tumors (MMMTs), and type I endometrial carcinomas.
    Methods: This nested case-control study utilized linked data from population-based medical birth and cancer registries in Denmark, Finland, Norway, and Sweden. Up to 10 controls were matched on country and birth year for each uterine cancer case. Using multivariable adjusted multinomial logistic regression, estimates of the associations between pregnancy-related factors and risk of uterine sarcoma, MMMTs, and type I endometrial carcinomas were determined.
    Results: Having a very-low-birth-weight infant (< 1500 vs. 2500-3999 g: OR [95% CI] 2.83 [1.61-4.96]) was associated with an increased risk of uterine sarcoma. Whereas, having a more recent pregnancy was associated with reduced risks of MMMT (< 10 vs. ≥ 30 years: 0.66 [0.20-2.23]) and type 1 endometrial carcinomas (0.35 [0.30-0.41]) but not uterine sarcomas (1.33 [0.90-1.98], p-heterogeneity < 0.01).
    Conclusion: Our study provides evidence that risk factors for uterine sarcoma and MMMT, previously grouped with uterine sarcomas, vary substantially. Additionally, MMMT and type I endometrial carcinomas are more similar than uterine sarcoma in that pregnancy complications like gestational hypertension and preeclampsia were associated with reduced risks of both but not uterine sarcoma, suggesting different etiologies.
    MeSH term(s) Humans ; Female ; Case-Control Studies ; Pregnancy ; Uterine Neoplasms/epidemiology ; Risk Factors ; Adult ; Middle Aged ; Sarcoma/epidemiology ; Registries ; Scandinavian and Nordic Countries/epidemiology ; Sweden/epidemiology ; Aged ; Finland/epidemiology ; Norway/epidemiology ; Denmark/epidemiology
    Language English
    Publishing date 2023-12-22
    Publishing country Netherlands
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 1064022-8
    ISSN 1573-7225 ; 0957-5243
    ISSN (online) 1573-7225
    ISSN 0957-5243
    DOI 10.1007/s10552-023-01832-6
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: ATF6α Activation Enhances Survival against Chemotherapy and Serves as a Prognostic Indicator in Osteosarcoma.

    Yarapureddy, Suma / Abril, Jazmine / Foote, Janet / Kumar, Saravana / Asad, Omar / Sharath, Veena / Faraj, Janine / Daniel, Dustin / Dickman, Paul / White-Collins, Andrea / Hingorani, Pooja / Sertil, Aparna R

    Neoplasia (New York, N.Y.)

    2019  Volume 21, Issue 6, Page(s) 516–532

    Abstract: Patients with metastatic or relapsed/refractory osteosarcoma (OS) have a 5-year survival rate of <30%. This has remained unchanged over several decades. One of the factors contributing to lack of improvement in survival is the development of ... ...

    Abstract Patients with metastatic or relapsed/refractory osteosarcoma (OS) have a 5-year survival rate of <30%. This has remained unchanged over several decades. One of the factors contributing to lack of improvement in survival is the development of chemoresistance. Hence, elucidating and targeting the mechanisms that promote survival against chemotherapy and lead to chemoresistance is pivotal to improving outcomes for these patients. We identified that endoplasmic reticulum (ER) stress-activated transcription factor, ATF6α, is essential for the survival of OS cells against chemotherapy induced cell death. ATF6α cleavage and activity were enhanced in OS cells compared to normal osteoblasts and knockdown of ATF6α expression enhanced sensitivity of OS cells against chemotherapy induced cell death. This was in part due to increased Bax activation. Pharmacologic inhibition or knock-down of downstream targets of ATF6α, protein disulfide isomerases (PDI) and ERO1β, a thiol oxidase that is involved in the re-oxidation of PDIs also independently induced pronounced killing of OS cells following chemotherapy. Analysis of primary tumors from OS patients reveals that patients with high levels of nuclear ATF6α: (1) also had increased expression of its downstream targets the chaperone BiP and enzyme PDI, (2) had a significant likelihood of developing metastasis at diagnosis, (3) had significantly poorer overall and progression free survival, and (4) had poorer response to chemotherapy. These findings suggest that targeting survival signaling by the ATF6α pathway in OS cells may favor eradication of refractory OS tumor cells and ATF6α could be a useful predictor for chemo-responsiveness and prognosis.
    MeSH term(s) Activating Transcription Factor 6/antagonists & inhibitors ; Activating Transcription Factor 6/genetics ; Apoptosis/drug effects ; Cell Line, Tumor ; Cell Proliferation/drug effects ; Cell Survival/drug effects ; Cisplatin/pharmacology ; Drug Synergism ; Gene Expression Regulation, Neoplastic/drug effects ; Humans ; Irinotecan/pharmacology ; Membrane Glycoproteins/genetics ; Osteosarcoma/drug therapy ; Osteosarcoma/genetics ; Osteosarcoma/pathology ; Oxidoreductases Acting on Sulfur Group Donors/genetics ; Prognosis ; Protein Disulfide-Isomerases/genetics ; RNA, Small Interfering/genetics
    Chemical Substances ATF6 protein, human ; Activating Transcription Factor 6 ; Membrane Glycoproteins ; RNA, Small Interfering ; Irinotecan (7673326042) ; Oxidoreductases Acting on Sulfur Group Donors (EC 1.8.-) ; ERO1B protein, human (EC 1.8.4.-) ; Protein Disulfide-Isomerases (EC 5.3.4.1) ; Cisplatin (Q20Q21Q62J)
    Language English
    Publishing date 2019-04-25
    Publishing country United States
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 1483840-0
    ISSN 1476-5586 ; 1522-8002
    ISSN (online) 1476-5586
    ISSN 1522-8002
    DOI 10.1016/j.neo.2019.02.004
    Database MEDical Literature Analysis and Retrieval System OnLINE

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