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The Levels of Bioelements in Postmenopausal Women with Metabolic Syndrome. Nutrients 2022; 14:nu14194102. [PMID: 36235758 PMCID: PMC9572475 DOI: 10.3390/nu14194102] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2022] [Revised: 09/22/2022] [Accepted: 09/29/2022] [Indexed: 11/16/2022] Open
Abstract
(1) Metabolic syndrome is a set of factors that considerably increase the risk of developing atherosclerosis, type 2 diabetes, and their cardiovascular complications. Studies show that menopause and the levels of elements may be significantly associated with increased risk of MetS. The present study evaluated the relationship between element levels (Ca, P, Na, K, Fe, Mg, Cu, Zn, Sr) and the incidence of MetS and concomitant metabolic disorders in peri-menopausal women. (2) The study involved 170 perimenopausal women. The methods used were: survey, anthropometric measurement (WC, height, BMI, WHtR), blood pressure measurement, and biochemical analysis of venous blood (lipid profile, glucose, insulin, HbA1C). (3) The study demonstrated statistically significantly higher WC, WHtR, SBP, and DBP values in women with pre-Mets than in those with Mets and the control group. Significantly higher FPG, TG, LDL, HbA1C, insulin, TG/HDL ratio, and TC/HDL ratio were recorded in the MetS group compared to the rest of respondents. In addition, post hoc analysis revealed statistically significant differences in mean K concentrations between pre-MetS and MetS women. (4) Low blood K levels in perimenopausal women are associated with an increased risk of MetS. Significantly higher Cu levels were observed in overweight women. The concentration of Cu negatively correlates with the values of TC, LDL, and SBP.
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Antioxidative, Anti-Inflammatory, Anti-Obesogenic, and Antidiabetic Properties of Tea Polyphenols-The Positive Impact of Regular Tea Consumption as an Element of Prophylaxis and Pharmacotherapy Support in Endometrial Cancer. Int J Mol Sci 2022; 23:ijms23126703. [PMID: 35743146 PMCID: PMC9224362 DOI: 10.3390/ijms23126703] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2022] [Revised: 06/14/2022] [Accepted: 06/15/2022] [Indexed: 02/01/2023] Open
Abstract
Endometrial cancer (EC) is second only to cervical carcinoma among the most commonly diagnosed malignant tumours of the female reproductive system. The available literature provides evidence for the involvement of 32 genes in the hereditary incidence of EC. The physiological markers of EC and coexisting diet-dependent maladies include antioxidative system disorders but also progressing inflammation; hence, the main forms of prophylaxis and pharmacotherapy ought to include a diet rich in substances aiding the organism’s response to this type of disorder, with a particular focus on ones suitable for lifelong consumption. Tea polyphenols satisfy those requirements due to their proven antioxidative, anti-inflammatory, anti-obesogenic, and antidiabetic properties. Practitioners ought to consider promoting tea consumption among individuals genetically predisposed for EC, particularly given its low cost, accessibility, confirmed health benefits, and above all, suitability for long-term consumption regardless of the patient’s age. The aim of this paper is to analyse the potential usability of tea as an element of prophylaxis and pharmacotherapy support in EC patients. The analysis is based on information available from worldwide literature published in the last 15 years.
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Shen B, Hao J, Lin Y, Li X, Yang X, Huang T, Wang J, Jia Y, Zhou J, Wang J. Estrogen-Induced Extracellular Calcium Influx Promotes Endometrial Cancer Progress by Regulating Lysosomal Activity and Mitochondrial ROS. Front Med (Lausanne) 2022; 9:835700. [PMID: 35223931 PMCID: PMC8866192 DOI: 10.3389/fmed.2022.835700] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2021] [Accepted: 01/18/2022] [Indexed: 11/13/2022] Open
Abstract
Objective Calcium is present in serum mainly in filterable and bound forms, and Ca2+ is a major key to modulate signaling pathways that control oncogenesis and oncochannels associated with several types of cancer. However, the biological significance of serum calcium and its related mechanism with estrogen in endometrial cancer (EC) still remains elusive. This study aims to ascertain the relationship between serum calcium and clinicopathology in EC. Methods Retrospective assessment of a total of 502 patients diagnosed with EC after surgery in Peking University People's Hospital from 2010 to 2018. Preoperative serum ionized calcium and the albumin corrected calcium was calculated in quartiles for various postoperative clinicopathological characteristics, logistic regression adjusted for potential confounders. Intracellular calcium homeostasis change induced by estrogen was detected by confocal analysis. Downstream pathways were analyzed by transcriptome and proteomics. Mitochondrial Ca2+ and ROS (reactive oxygen species) level was detected by confocal and flow cytometry. Lysosomal morphological and membrane changes were verified by confocal or Western blot assays. Results High level of albumin-corrected serum calcium was significantly correlated with EC clinicopathological characteristics progression include lymph vascular space invasion, lymph nodes metastasis, myometrial invasion, and cervical invasion. Calcium homeostasis regulated by estrogen in EC cells derived from extracellular calcium influx but not the release of the endoplasmic reticulum. Proteomic and bioinformatic analysis revealed the calcium influx might be involved in the regulation of autophagy and mitochondrial-related pathways. Mechanistic investigation demonstrated that calcium influx acted on the function of mitochondrial ROS and lysosomal activity. Conclusion Our findings revealed that serum calcium level was significantly related to poor outcomes. The extracellular calcium influx induced by estrogen was targeted to mitochondrial ROS and lysosome activity, which should be oriented to improve EC therapeutic strategies.
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Affiliation(s)
- Boqiang Shen
- Department of Obstetrics and Gynecology, Peking University People's Hospital, Beijing, China
| | - Juan Hao
- Department of Obstetrics and Gynecology, Peking University People's Hospital, Beijing, China
| | - Yanying Lin
- Center of Reproductive Medicine, Fujian Maternity and Child Health Hospital, Affiliated Hospital of Fujian Medical University, Fuzhou, China
| | - Xingchen Li
- Department of Obstetrics and Gynecology, Peking University People's Hospital, Beijing, China
| | - Xiao Yang
- Department of Obstetrics and Gynecology, Peking University People's Hospital, Beijing, China
| | - Ting Huang
- Department of Obstetrics and Gynecology, Peking University People's Hospital, Beijing, China
| | - Jiaqi Wang
- Department of Obstetrics and Gynecology, Peking University People's Hospital, Beijing, China
| | - Yuanyuan Jia
- Department of Obstetrics and Gynecology, Peking University People's Hospital, Beijing, China
| | - Jingyi Zhou
- Department of Obstetrics and Gynecology, Peking University People's Hospital, Beijing, China
| | - Jianliu Wang
- Department of Obstetrics and Gynecology, Peking University People's Hospital, Beijing, China
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Cheng J, Zhang W, Zhao Y, Li X, Lv R, Li H, Chen J. Association of serum calcium levels with renal impairment and all-cause death in Chinese patients with newly diagnosed multiple myeloma: a cross-sectional, longitudinal study. Nutr Metab (Lond) 2021; 18:19. [PMID: 33573678 PMCID: PMC7879693 DOI: 10.1186/s12986-020-00525-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2020] [Accepted: 11/21/2020] [Indexed: 11/17/2022] Open
Abstract
Background More studies have shown that serum calcium has a crucial role in many types of cancers. However, few studies have determined the association between serum calcium levels and renal impairment (RI) and all-cause death in Chinese patients with multiple myeloma (MM).
Methods A total of 246 of 565 participants who were followed for > 6 months from a MM cohort at our institution were eligible for the retrospective study. A generalized additive model and smooth curve fitting were performed to investigate the cross-sectional relationship between the serum calcium level and RI at baseline. Multivariate-adjusted Cox regression models were fitted to assess the associations between baseline serum calcium levels and the onset of end-stage renal disease (ESRD) or death in patients with MM. Results A total of 172 of 565 patients (30.4%) with newly diagnosed MM presented with RI. The mean duration of follow-up was 26.64 months. Twenty-one patients (8.54%) died and 28 patients (11.52%) had ESRD. In patients with a serum calcium level > 2.30 mmol/L, the serum calcium level was independently associated with the occurrence of MM-related RI. Cox regression analysis showed that baseline serum calcium levels were consistently associated with a higher risk of all-cause death in the fully adjusted model, but were not associated with the occurrence of ESRD. When patients were categorized into two groups according to baseline mean serum calcium level, deaths occurred in 13 patients (15.1%) with a mean serum calcium level > 2.44 mmol/L compared to eight patients (5.0%) with a mean serum calcium level < 2.44 mmol/L (p < 0.05); Eighteen patients (11.46%) with a mean serum calcium level < 2.44 mmol/L progressed to ESRD compared to 13 patients (11.6%) with a serum calcium level > 2.44 mmol/L (p > 0.05).
Conclusions This observational study showed that there was a nonlinear relationship between the serum calcium level and the presence of RI in patients with MM. An elevated baseline calcium level predicted all-cause death, but did not predict the occurrence of ESRD in patients with MM followed for > 6 months.
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Affiliation(s)
- Jun Cheng
- Kidney Disease Center, The First Affiliated Hospital, Medical School of Zhejiang University, Hangzhou, 310003, China
| | - Wen Zhang
- Department of Nephrology, The Yuhang District First People's Hospital, Hangzhou, China
| | - Yi Zhao
- Hematology Center, The First Affiliated Hospital, Medical School of Zhejiang University, Hangzhou, 310003, China
| | - Xiayu Li
- Kidney Disease Center, The First Affiliated Hospital, Medical School of Zhejiang University, Hangzhou, 310003, China
| | - Rong Lv
- Kidney Disease Center, The First Affiliated Hospital, Medical School of Zhejiang University, Hangzhou, 310003, China
| | - Heng Li
- Kidney Disease Center, The First Affiliated Hospital, Medical School of Zhejiang University, Hangzhou, 310003, China
| | - Jianghua Chen
- Kidney Disease Center, The First Affiliated Hospital, Medical School of Zhejiang University, Hangzhou, 310003, China.
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Li X, Cheng Y, Wang Z, Zhou J, Jia Y, He X, Zhao L, Dong Y, Fan Y, Yang X, Shen B, Wu X, Wang J, Xiong C, Wei L, Li X, Wang J. Calcium and TRPV4 promote metastasis by regulating cytoskeleton through the RhoA/ROCK1 pathway in endometrial cancer. Cell Death Dis 2020; 11:1009. [PMID: 33230171 PMCID: PMC7683721 DOI: 10.1038/s41419-020-03181-7] [Citation(s) in RCA: 52] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2020] [Revised: 10/27/2020] [Accepted: 10/27/2020] [Indexed: 12/11/2022]
Abstract
Transient receptor potential vanilloid 4 (TRPV4) is a calcium-permeable cation channel that has been associated with several types of cancer. However, its biological significance, as well as its related mechanism in endometrial cancer (EC) still remains elusive. In this study, we examined the function of calcium in EC, with a specific focus on TRPV4 and its downstream pathway. We reported here on the findings that a high level of serum ionized calcium was significantly correlated with advanced EC progression, and among all the calcium channels, TRPV4 played an essential role, with high levels of TRPV4 expression associated with cancer progression both in vitro and in vivo. Proteomic and bioinformatics analysis revealed that TRPV4 was involved in cytoskeleton regulation and Rho protein pathway, which regulated EC cell migration. Mechanistic investigation demonstrated that TRPV4 and calcium influx acted on the cytoskeleton via the RhoA/ROCK1 pathway, ending with LIMK/cofilin activation, which had an impact on F-actin and paxillin (PXN) levels. Overall, our findings indicated that ionized serum calcium level was significantly associated with poor outcomes and calcium channel TRPV4 should be targeted to improve therapeutic and preventive strategies in EC.
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Affiliation(s)
- Xingchen Li
- Department of Obstetrics and Gynecology, Peking University People's Hospital, Beijing, 100044, China
| | - Yuan Cheng
- Department of Obstetrics and Gynecology, Peking University People's Hospital, Beijing, 100044, China
| | - Zhiqi Wang
- Department of Obstetrics and Gynecology, Peking University People's Hospital, Beijing, 100044, China
| | - Jingyi Zhou
- Department of Obstetrics and Gynecology, Peking University People's Hospital, Beijing, 100044, China.,Beijing Key Laboratory of Female Pelvic Floor Disorders Diseases, Beijing, 100044, China
| | - Yuanyuan Jia
- Department of Obstetrics and Gynecology, Peking University People's Hospital, Beijing, 100044, China.,Beijing Key Laboratory of Female Pelvic Floor Disorders Diseases, Beijing, 100044, China
| | - Xiangjun He
- Department of Central Laboratory & Institute of Clinical Molecular Biology, Peking University People's Hospital, Beijing, 100044, China
| | - Lijun Zhao
- Department of Obstetrics and Gynecology, Peking University People's Hospital, Beijing, 100044, China.,Beijing Key Laboratory of Female Pelvic Floor Disorders Diseases, Beijing, 100044, China
| | - Yangyang Dong
- Department of Obstetrics and Gynecology, Peking University People's Hospital, Beijing, 100044, China
| | - Yuan Fan
- Department of Obstetrics and Gynecology, Peking University People's Hospital, Beijing, 100044, China
| | - Xiao Yang
- Department of Obstetrics and Gynecology, Peking University People's Hospital, Beijing, 100044, China
| | - Boqiang Shen
- Department of Obstetrics and Gynecology, Peking University People's Hospital, Beijing, 100044, China
| | - Xiaotong Wu
- Department of Obstetrics and Gynecology, Peking University People's Hospital, Beijing, 100044, China.,Beijing Key Laboratory of Female Pelvic Floor Disorders Diseases, Beijing, 100044, China
| | - Jiaqi Wang
- Department of Obstetrics and Gynecology, Peking University People's Hospital, Beijing, 100044, China.,Beijing Key Laboratory of Female Pelvic Floor Disorders Diseases, Beijing, 100044, China
| | - Chunyang Xiong
- Department of Mechanics and Bioengineering, College of Engineering, Peking University, Beijing, 100871, China
| | - Lihui Wei
- Department of Obstetrics and Gynecology, Peking University People's Hospital, Beijing, 100044, China
| | - Xiaoping Li
- Department of Obstetrics and Gynecology, Peking University People's Hospital, Beijing, 100044, China
| | - Jianliu Wang
- Department of Obstetrics and Gynecology, Peking University People's Hospital, Beijing, 100044, China. .,Beijing Key Laboratory of Female Pelvic Floor Disorders Diseases, Beijing, 100044, China.
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Li XC, Dong YY, Cheng Y, Zhou JY, Yang X, Shen BQ, Wu XT, Li XP, Wang JL. Increased Serum Calcium Level Promotes the Risk of Lymph Node Metastasis in Endometrial Cancer. Cancer Manag Res 2020; 12:5023-5030. [PMID: 32612389 PMCID: PMC7323808 DOI: 10.2147/cmar.s253914] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2020] [Accepted: 05/25/2020] [Indexed: 12/17/2022] Open
Abstract
Purpose The early predictive values of diagnostic markers for lymph node metastasis (LNM) in endometrial cancer (EC) are still unclear at present. The purpose of this study is to explore the relationship between serum calcium and LNM in EC. Methods We identified all patients with EC who underwent surgery between January 2012 and December 2016. Patient characteristics and various preoperative clinicopathologic data were obtained from medical records and were reviewed retrospectively. These patients were divided into two groups according to the pathology of their lymph node. Logistic regression models analyzed the relationship between the ionized calcium and LNM of EC patients, while adjusting for the potential confounders. Results A total of 448 patients were assessed. Univariate analysis showed that ionized calcium, CA125 level, tumor grade, peritoneal cytology, FIGO stage, histological type, LVSI, and myometrial invasion were positively correlated with LNM (all P<0.05). The risk of LNM increased with the promotion of serum ionized calcium (P for trend <0.01). Ionized calcium level was significant before and after the adjustment of cofounders (unadjusted: OR=11.9, 95% CI: 4.8-29.6, P< 0.01; model I: OR=11.3, 95% CI: 4.5-28.8, P< 0.01; model II: OR=5.2, 95% CI: 1.6-17.2, P< 0.05). Additionally, the risk of ionized calcium was especially evident in patients whose age was older than 60, BMI<28 kg/m2, grade 3, negative peritoneal cytology and endometrioid endometrial adenocarcinoma. Conclusion Ionized calcium level was highly associated with LNM in EC and acted as a potential biomarker in predicting the risk of LNM in EC.
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Affiliation(s)
- Xing-Chen Li
- Department of Obstetrics and Gynecology, Peking University People's Hospital, Beijing 100044, People's Republic of China
| | - Yang-Yang Dong
- Department of Obstetrics and Gynecology, Peking University People's Hospital, Beijing 100044, People's Republic of China
| | - Yuan Cheng
- Department of Obstetrics and Gynecology, Peking University People's Hospital, Beijing 100044, People's Republic of China
| | - Jing-Yi Zhou
- Department of Obstetrics and Gynecology, Peking University People's Hospital, Beijing 100044, People's Republic of China.,Beijing Key Laboratory of Female Pelvic Floor Disorders Diseases, Beijing 100044, People's Republic of China
| | - Xiao Yang
- Department of Obstetrics and Gynecology, Peking University People's Hospital, Beijing 100044, People's Republic of China
| | - Bo-Qiang Shen
- Department of Obstetrics and Gynecology, Peking University People's Hospital, Beijing 100044, People's Republic of China
| | - Xiao-Tong Wu
- Department of Obstetrics and Gynecology, Peking University People's Hospital, Beijing 100044, People's Republic of China.,Beijing Key Laboratory of Female Pelvic Floor Disorders Diseases, Beijing 100044, People's Republic of China
| | - Xiao-Ping Li
- Department of Obstetrics and Gynecology, Peking University People's Hospital, Beijing 100044, People's Republic of China
| | - Jian-Liu Wang
- Department of Obstetrics and Gynecology, Peking University People's Hospital, Beijing 100044, People's Republic of China.,Beijing Key Laboratory of Female Pelvic Floor Disorders Diseases, Beijing 100044, People's Republic of China
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Yang X, Wang J. The Role of Metabolic Syndrome in Endometrial Cancer: A Review. Front Oncol 2019; 9:744. [PMID: 31440472 PMCID: PMC6694738 DOI: 10.3389/fonc.2019.00744] [Citation(s) in RCA: 66] [Impact Index Per Article: 13.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2019] [Accepted: 07/24/2019] [Indexed: 12/12/2022] Open
Abstract
Endometrial cancer is one of the most common cancers of the female reproductive system. Although surgery, radiotherapy, chemotherapy, and hormone therapy can significantly improve the survival of patients, the treatment of patients with very early lesions and a strong desire to retain reproductive function or late recurrence is still in the early stages. Metabolic syndrome (MS) is a clustering of at least three of the five following medical conditions: central obesity, high blood pressure, high blood sugar, high serum triglycerides, and low serum high-density lipoprotein (HDL). Obesity, diabetes and hypertension often coexist in patients with endometrial cancer, which increases the risk of endometrial cancer, also known as the "triple syndrome of endometrial cancer." In recent years, epidemiological and clinical studies have found that MS associated with metabolic diseases is closely related to the incidence of endometrial cancer. However, the key molecular mechanisms underlying the induction of endometrial cancer by MS have not been elucidated to date. Characterizing the tumor metabolism microenvironment will be advantageous for achieving a comprehensive view of the molecular mechanism of metabolic syndrome associated with endometrial cancer and for providing a new target for the treatment of endometrial cancer. This review focuses on recent advances in determining the role of metabolic syndrome-related factors and mechanisms in the pathogenesis of endometrial cancer. We suggest that interfering with the tumor metabolic microenvironment-related molecular signals may inhibit the occurrence of endometrial cancer.
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Affiliation(s)
- Xiao Yang
- Department of Obstetrics and Gynecology, Peking University People's Hospital, Beijing, China
| | - Jianliu Wang
- Department of Obstetrics and Gynecology, Peking University People's Hospital, Beijing, China
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Lower Midline Versus Pfannenstiel Incision in Pelvic Lymphadenectomy in Endometrial Cancer. INDIAN JOURNAL OF GYNECOLOGIC ONCOLOGY 2019. [DOI: 10.1007/s40944-019-0282-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Li X, Cheng Y, Dong Y, Shen B, Yang X, Wang J, Zhou J, Wang J. An elevated preoperative serum calcium level is a significant predictor for positive peritoneal cytology in endometrial carcinoma. Chin J Cancer Res 2019; 31:965-973. [PMID: 31949398 PMCID: PMC6955164 DOI: 10.21147/j.issn.1000-9604.2019.06.12] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Objective To evaluate preoperative serum calcium concentration and investigate the association between calcium level and positive peritoneal cytology in endometrial carcinoma (EC). Methods A total of 510 patients who were diagnosed with EC and had surgery were initially enrolled in this study at Peking University People’s Hospital between January 2012 and December 2016. Clinical characteristics and preoperative serum calcium, albumin, carbohydrate antigen (CA)125, CA19-9, carcinoembryonic antigen (CEA) were extracted from patient records and evaluated according to postoperative peritoneal cytology. Predictive factors were assessed with Cox univariate and multivariate analyses. Factors selected from multivariate analysis results were used to build a predictive model. Results A total of 510 patients are identified in our database and 444 patients who fulfilled inclusion and exclusion criteria are included in this study. Univariate analysis revealed that ionized calcium concentration was closely related to positive peritoneal cytology, tumor grade and lymph-vascular space invasion (LVSI). Moreover, peritoneal cytology was significantly associated with hypertension, tubal ligation, serum CA125, CA19-9, CEA and ionized calcium level. Multivariate analysis revealed that albumin-adjusted calcium level, CA125 and tubal ligation were independent predictive factors of positive peritoneal cytology (P<0.05). A combination of ionized calcium level with the other two indexes yielded significantly great area under the curve (AUC=0.824). Conclusions This study enhanced the value of preoperative ionized calcium level. We also identified several potential biomarkers to predict positive peritoneal cytology in EC patients before surgery.
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Affiliation(s)
- Xingchen Li
- Department of Obstetrics and Gynecology, Peking University People's Hospital, Beijing 100044, China
| | - Yuan Cheng
- Department of Obstetrics and Gynecology, Peking University People's Hospital, Beijing 100044, China
| | - Yangyang Dong
- Department of Obstetrics and Gynecology, Peking University People's Hospital, Beijing 100044, China
| | - Boqiang Shen
- Department of Obstetrics and Gynecology, Peking University People's Hospital, Beijing 100044, China
| | - Xiao Yang
- Department of Obstetrics and Gynecology, Peking University People's Hospital, Beijing 100044, China
| | - Jiaqi Wang
- Department of Obstetrics and Gynecology, Peking University People's Hospital, Beijing 100044, China.,Beijing Key Laboratory of Female Pelvic Floor Disorders Diseases, Beijing 100044, China
| | - Jingyi Zhou
- Department of Obstetrics and Gynecology, Peking University People's Hospital, Beijing 100044, China.,Beijing Key Laboratory of Female Pelvic Floor Disorders Diseases, Beijing 100044, China
| | - Jianliu Wang
- Department of Obstetrics and Gynecology, Peking University People's Hospital, Beijing 100044, China
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