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Zhang K, Zhu J, Wang P, Chen Y, Wang Z, Ge X, Wu J, Chen L, Lu Y, Xu P, Yao J. Plasma metabolites as mediators in immune cell-pancreatic cancer risk: insights from Mendelian randomization. Front Immunol 2024; 15:1402113. [PMID: 38933268 PMCID: PMC11199692 DOI: 10.3389/fimmu.2024.1402113] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2024] [Accepted: 05/31/2024] [Indexed: 06/28/2024] Open
Abstract
Background Immune cells play a crucial role in the development and progression of pancreatic cancer, yet the causal relationship remains uncertain due to complex immune microenvironments and conflicting research findings. Mendelian randomization (MR), this study aims to delineate the causal relationships between immune cells and pancreatic cancer while identifying intermediary factors. Methods The genome-wide association study (GWAS) data on immune cells, pancreatic cancer, and plasma metabolites are derived from public databases. In this investigation, inverse variance weighting (IVW) as the primary analytical approach to investigate the causal relationship between exposure and outcome. Furthermore, this study incorporates MR-Egger, simple mode, weighted median, and weighted mode as supplementary analytical approaches. To ensure the reliability of our findings, we further assessed horizontal pleiotropy and heterogeneity and evaluated the stability of MR results using the Leave-one-out method. In conclusion, this study employed mediation analysis to elucidate the potential mediating effects of plasma metabolites. Results Our investigation revealed a causal relationship between immune cells and pancreatic cancer, highlighting the pivotal roles of CD11c+ monocytes (odds ratio, ORIVW=1.105; 95% confidence interval, 95%CI: 1.002-1.218; P=0.045), HLA DR+ CD4+ antigen-presenting cells (ORIVW=0.920; 95%CI: 0.873-0.968; P=0.001), and HLA DR+ CD8br T cells (ORIVW=1.058; 95%CI: 1.002-1.117; P=0.041) in pancreatic cancer progression. Further mediation analysis indicated that oxalate (proportion of mediation effect in total effect: -11.6%, 95% CI: -89.7%, 66.6%) and the mannose to trans-4-hydroxyproline ratio (-19.4, 95% CI: -136%, 96.8%) partially mediate the relationship between HLA DR+ CD8br T cells and pancreatic cancer in nature. In addition, our analysis indicates that adrenate (-8.39%, 95% CI: -18.3%, 1.54%) plays a partial mediating role in the association between CD11c+ monocyte and pancreatic cancer, while cortisone (-26.6%, 95% CI: 138%, -84.8%) acts as a partial mediator between HLA DR+ CD4+ AC and pancreatic cancer. Conclusion This MR investigation provides evidence supporting the causal relationship between immune cell and pancreatic cancer, with plasma metabolites serving as mediators. Identifying immune cell phenotypes with potential causal effects on pancreatic cancer sheds light on its underlying mechanisms and suggests novel therapeutic targets.
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Affiliation(s)
- Ke Zhang
- Dalian Medical University, Dalian, China
| | - Jie Zhu
- Department of Hepatobiliary and Pancreatic Surgery, Northern Jiangsu People’s Hospital Affiliated Yangzhou University, Yangzhou, China
| | - Peng Wang
- Department of Hepatobiliary and Pancreatic Surgery, Northern Jiangsu People’s Hospital Affiliated Yangzhou University, Yangzhou, China
| | - Yuan Chen
- Department of Hepatobiliary and Pancreatic Surgery, Northern Jiangsu People’s Hospital Affiliated Yangzhou University, Yangzhou, China
| | - Zhengwang Wang
- Department of Hepatobiliary and Pancreatic Surgery, Northern Jiangsu People’s Hospital Affiliated Yangzhou University, Yangzhou, China
| | - Xinyu Ge
- Dalian Medical University, Dalian, China
| | - Junqing Wu
- Department of Hepatobiliary and Pancreatic Surgery, Northern Jiangsu People’s Hospital Affiliated Yangzhou University, Yangzhou, China
| | - Long Chen
- Department of Hepatobiliary and Pancreatic Surgery, Northern Jiangsu People’s Hospital Affiliated Yangzhou University, Yangzhou, China
| | - Yipin Lu
- Department of Hepatobiliary and Pancreatic Surgery, Northern Jiangsu People’s Hospital Affiliated Yangzhou University, Yangzhou, China
| | - Peng Xu
- Department of Hepatobiliary and Pancreatic Surgery, Northern Jiangsu People’s Hospital Affiliated Yangzhou University, Yangzhou, China
| | - Jie Yao
- Department of Hepatobiliary and Pancreatic Surgery, Northern Jiangsu People’s Hospital Affiliated Yangzhou University, Yangzhou, China
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Yu M, Wen W, Wang Y, Shan X, Yi X, Zhu W, Aa J, Wang G. Plasma metabolomics reveals risk factors for lung adenocarcinoma. Front Oncol 2024; 14:1277206. [PMID: 38567154 PMCID: PMC10985191 DOI: 10.3389/fonc.2024.1277206] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2023] [Accepted: 03/04/2024] [Indexed: 04/04/2024] Open
Abstract
Background Metabolic reprogramming plays a significant role in the advancement of lung adenocarcinoma (LUAD), yet the precise metabolic changes remain incompletely understood. This study aims to uncover metabolic indicators associated with the progression of LUAD. Methods A total of 1083 subjects were recruited, including 670 LUAD, 135 benign lung nodules (BLN) and 278 healthy controls (HC). Gas chromatography-mass spectrometry (GC/MS) was used to identify and quantify plasma metabolites. Odds ratios (ORs) were calculated to determine LUAD risk factors, and machine learning algorithms were utilized to differentiate LUAD from BLN. Results High levels of oxalate, glycolate, glycine, glyceric acid, aminomalonic acid, and creatinine were identified as risk factors for LUAD (adjusted ORs>1.2, P<0.03). Remarkably, oxalate emerged as a distinctive metabolic risk factor exhibiting a strong correlation with the progression of LUAD (adjusted OR=5.107, P<0.001; advanced-stage vs. early-stage). The Random Forest (RF) model demonstrated a high degree of efficacy in distinguishing between LUAD and BLN (accuracy = 1.00 and 0.73, F1-score= 1.00 and 0.79, and AUC = 1.00 and 0.76 in the training and validation sets, respectively). TCGA and GTEx gene expression data have shown that lactate dehydrogenase A (LDHA), a crucial enzyme involved in oxalate metabolism, is increasingly expressed in the progression of LUAD. High LDHA expression levels in LUAD patients are also linked to poor prognoses (HR=1.66, 95% CI=1.34-2.07, P<0.001). Conclusions This study reveals risk factors associated with LUAD.
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Affiliation(s)
- Mengjie Yu
- Key Laboratory of Drug Metabolism & Pharmacokinetics, China Pharmaceutical University, Nanjing, Jiangsu, China
| | - Wei Wen
- Department of Thoracic Surgery, First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu, China
| | - Yue Wang
- Key Laboratory of Drug Metabolism & Pharmacokinetics, China Pharmaceutical University, Nanjing, Jiangsu, China
| | - Xia Shan
- Department of Respiration, The Affiliated Jiangning Hospital of Nanjing Medical University, Nanjing, Jiangsu, China
| | - Xin Yi
- Key Laboratory of Drug Metabolism & Pharmacokinetics, China Pharmaceutical University, Nanjing, Jiangsu, China
| | - Wei Zhu
- Department of Oncology, First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu, China
| | - Jiye Aa
- Key Laboratory of Drug Metabolism & Pharmacokinetics, China Pharmaceutical University, Nanjing, Jiangsu, China
| | - Guangji Wang
- Key Laboratory of Drug Metabolism & Pharmacokinetics, China Pharmaceutical University, Nanjing, Jiangsu, China
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Zeng Z, Xu S, Wang F, Peng X, Zhang W, Zhan Y, Ding Y, Liu Z, Liang L. HAO1-mediated oxalate metabolism promotes lung pre-metastatic niche formation by inducing neutrophil extracellular traps. Oncogene 2022; 41:3719-3731. [PMID: 35739335 PMCID: PMC9287177 DOI: 10.1038/s41388-022-02248-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2021] [Revised: 01/30/2022] [Accepted: 02/14/2022] [Indexed: 11/09/2022]
Abstract
Metabolic reprogramming has been shown to be involved in cancer-induced pre-metastatic niche (PMN) formation, but the underlying mechanisms have been insufficiently explored. Here, we showed that hydroxyacid oxidase 1 (HAO1), a rate-limiting enzyme of oxalate synthesis, was upregulated in the alveolar epithelial cells of mice bearing metastatic breast cancer cells at the pre-metastatic stage, leading to oxalate accumulation in lung tissue. Lung oxalate accumulation induced neutrophil extracellular trap (NET) formation by activating NADPH oxidase, which facilitated the formation of pre-metastatic niche. In addition, lung oxalate accumulation promoted the proliferation of metastatic cancer cells by activating the MAPK signaling pathway. Pharmacologic inhibition of HAO1 could effectively suppress the lung oxalate accumulation induced by primary cancer, consequently dampening lung metastasis of breast cancer. Breast cancer cells induced HAO1 expression and oxalate accumulation in alveolar epithelial cells by activating TLR3-IRF3 signaling. Collectively, these findings underscore the role of HAO1-mediated oxalate metabolism in cancer-induced lung PMN formation and metastasis. HAO1 could be an appealing therapeutic target for preventing lung metastasis of cancer.
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Affiliation(s)
- Zhicheng Zeng
- Department of Pathology, Shunde Hospital, Southern Medical University (The First People's Hospital of Shunde Foshan), foshan, Guangdong, PR China.,Department of Pathology, Nanfang Hospital and Basic Medical College, Southern Medical University, Guangzhou, 510515, PR China.,Guangdong Province Key Laboratory of Molecular Tumor Pathology, Guangzhou, 510515, Guangdong, PR China
| | - Shaowan Xu
- Department of Pathology, Nanfang Hospital and Basic Medical College, Southern Medical University, Guangzhou, 510515, PR China.,Guangdong Province Key Laboratory of Molecular Tumor Pathology, Guangzhou, 510515, Guangdong, PR China
| | - Feifei Wang
- Department of Pathology, Nanfang Hospital and Basic Medical College, Southern Medical University, Guangzhou, 510515, PR China.,Guangdong Province Key Laboratory of Molecular Tumor Pathology, Guangzhou, 510515, Guangdong, PR China
| | - Xin Peng
- Department of Pathology, Nanfang Hospital and Basic Medical College, Southern Medical University, Guangzhou, 510515, PR China.,Guangdong Province Key Laboratory of Molecular Tumor Pathology, Guangzhou, 510515, Guangdong, PR China
| | - Wanning Zhang
- Department of Pathology, Nanfang Hospital and Basic Medical College, Southern Medical University, Guangzhou, 510515, PR China.,Guangdong Province Key Laboratory of Molecular Tumor Pathology, Guangzhou, 510515, Guangdong, PR China
| | - Yizhi Zhan
- Department of Pathology, Nanfang Hospital and Basic Medical College, Southern Medical University, Guangzhou, 510515, PR China.,Guangdong Province Key Laboratory of Molecular Tumor Pathology, Guangzhou, 510515, Guangdong, PR China
| | - Yanqing Ding
- Department of Pathology, Nanfang Hospital and Basic Medical College, Southern Medical University, Guangzhou, 510515, PR China.,Guangdong Province Key Laboratory of Molecular Tumor Pathology, Guangzhou, 510515, Guangdong, PR China
| | - Ziguang Liu
- Department of Pathology, Shunde Hospital, Southern Medical University (The First People's Hospital of Shunde Foshan), foshan, Guangdong, PR China
| | - Li Liang
- Department of Pathology, Nanfang Hospital and Basic Medical College, Southern Medical University, Guangzhou, 510515, PR China. .,Guangdong Province Key Laboratory of Molecular Tumor Pathology, Guangzhou, 510515, Guangdong, PR China.
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Inczefi O, Bacsur P, Resál T, Keresztes C, Molnár T. The Influence of Nutrition on Intestinal Permeability and the Microbiome in Health and Disease. Front Nutr 2022; 9:718710. [PMID: 35548572 PMCID: PMC9082752 DOI: 10.3389/fnut.2022.718710] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2021] [Accepted: 02/22/2022] [Indexed: 01/09/2023] Open
Abstract
The leakage of the intestinal barrier and the disruption of the gut microbiome are increasingly recognized as key factors in different pathophysiological conditions, such as irritable bowel syndrome (IBS), inflammatory bowel disease (IBD), chronic liver diseases, obesity, diabetes mellitus, types of cancer, and neuropsychiatric disorders. In this study, the mechanisms leading to dysbiosis and "leaky gut" are reviewed, and a short summary of the current knowledge regarding different diseases is provided. The simplest way to restore intestinal permeability and the microbiota could be ideal nutrition. Further therapeutic options are also available, such as the administration of probiotics or postbiotics or fecal microbiota transplantation.
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Affiliation(s)
- Orsolya Inczefi
- Department of Gastroenterology, Albert Szent-Györgyi Medical School, University of Szeged, Szeged, Hungary
| | - Péter Bacsur
- Department of Gastroenterology, Albert Szent-Györgyi Medical School, University of Szeged, Szeged, Hungary
| | - Tamás Resál
- Department of Gastroenterology, Albert Szent-Györgyi Medical School, University of Szeged, Szeged, Hungary
| | - Csilla Keresztes
- Department for Medical Communication and Translation Studies, Albert Szent-Györgyi Medical School, University of Szeged, Szeged, Hungary
| | - Tamás Molnár
- Department of Gastroenterology, Albert Szent-Györgyi Medical School, University of Szeged, Szeged, Hungary,*Correspondence: Tamás Molnár,
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Shen Y, Luo X, Li H, Guan Q, Cheng L. Evaluation of a high-performance liquid chromatography method for urinary oxalate determination and investigation regarding the pediatric reference interval of spot urinary oxalate to creatinine ratio for screening of primary hyperoxaluria. J Clin Lab Anal 2021; 35:e23870. [PMID: 34097312 PMCID: PMC8373360 DOI: 10.1002/jcla.23870] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2020] [Revised: 05/23/2021] [Accepted: 05/24/2021] [Indexed: 12/15/2022] Open
Abstract
BACKGROUND Urinary oxalate can provide important clues for the screening and monitoring of children with primary hyperoxaluria (PH), which is a potentially life-threatening condition. However, little effort has been devoted to improve the oxalate assay in recent years. We have proposed a reliable and cost-effective high-performance liquid chromatography (HPLC) method for urinary oxalate determination. METHODS Urine specimens were centrifuged after one-step derivatization, and the supernatants were subjected to HPLC analysis. RESULTS The method was validated with consistent linearity from 0.0625 to 2.0 mmol/L with coefficients of variation ≤7.73%, good recovery, low carryover, satisfactory sample stability, and analytical specificity. The lower limit of quantification and the limit of detection were 0.03130 and 0.0156 mmol/L, respectively. Imprecision values were ≤2.92% and ≤16.6% for externally and internally produced controls, respectively. The pediatric reference interval of spot urinary oxalate to creatinine ratios was established together with its application in screening of PH in patients with renal diseases, revealing its successful deployment in our laboratory. CONCLUSIONS This reliable HPLC method could serve as a significant tool to determine urinary oxalate levels for screening and monitoring of children with PH in routine clinical laboratories.
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Affiliation(s)
- Ying Shen
- Department of Laboratory Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Xia Luo
- Department of Laboratory Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Huijun Li
- Department of Laboratory Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Qing Guan
- Department of Laboratory Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Liming Cheng
- Department of Laboratory Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
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Chen F, Bao X, Liu S, Ye K, Xiang S, Yu L, Xu Q, Zhang Y, Wang X, Zhu X, Ying J, Shen Y, Ji W, Si S. Gut microbiota affect the formation of calcium oxalate renal calculi caused by high daily tea consumption. Appl Microbiol Biotechnol 2021; 105:789-802. [PMID: 33404827 DOI: 10.1007/s00253-020-11086-w] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2020] [Revised: 12/17/2020] [Accepted: 12/28/2020] [Indexed: 01/14/2023]
Abstract
Kidney stones are a common and frequently occurring disease worldwide. Stones can cause urinary tract obstruction, pain, haematuria, and other symptoms. In this study, the relationship between calcium oxalate renal calculi and gut microbiota was considered. The dietary habits of 30 patients with calcium oxalate kidney stones and 30 healthy people were investigated. The 16S rDNA sequences and short-chain fatty acids (SCFAs) in their stool samples were analysed. We identified 5 genera of the gut microbiota as biomarkers for calcium oxalate renal calculi, namely, Bacteroides, Phascolarctobacterium, Faecalibacterium, Akkermansia, and Lactobacillus, with a receiver operating characteristic (ROC) curve value of 0.871 (95% confidence interval (CI) 0.785-0.957). Phascolarctobacterium and Faecalibacterium showed a positive relationship with SCFA synthesis to reduce the risk of kidney stones. Meanwhile, according to the analysis, Lactobacillus spp. made the largest contribution (79%) to prevent kidney stones caused by tea consumption, since tea offers the great parts of oxalate in kidney stone formation. Three strains of Lactobacillus spp. were isolated from stools of a healthy person with a high level of tea consumption who did not suffer from kidney stones. All these strains survived in the colon with supplementation of high concentrations of tea and efficiently degraded oxalic acid (Ca. 50%) in an in vitro colonic simulation. Therefore, a suitable adjustment of the gut microbiota or SCFA concentration enhanced the degradation of oxalate from food, which can be applied to prevent the formation of calcium oxalate renal calculi caused by tea. KEY POINTS: • Five genera, including Lactobacillus, were identified as biomarkers for calcium oxalate renal calculi. • Lactobacillus is a potential gut bacterium associated with preventing kidney stone formation. • Isolated Lactobacillus strains have the ability to degrade oxalic acid in vitro.
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Affiliation(s)
- Feng Chen
- Department of Urology, Jiaxing Ivy Hospital, Jiaxing, Zhejiang, People's Republic of China
| | - Xuan Bao
- School of Food Science and Bioengineering, Zhejiang Gongshang University, Hangzhou, Zhejiang, People's Republic of China
| | - Shiyu Liu
- School of Food Science and Bioengineering, Zhejiang Gongshang University, Hangzhou, Zhejiang, People's Republic of China
| | - Kun Ye
- School of Food Science and Bioengineering, Zhejiang Gongshang University, Hangzhou, Zhejiang, People's Republic of China
| | - Shasha Xiang
- School of Food Science and Bioengineering, Zhejiang Gongshang University, Hangzhou, Zhejiang, People's Republic of China
| | - Liting Yu
- Department of Urology, China Coast Guard of the Chinese People Armed Police Force Corps Hospital, Jiaxing, Zhejiang, People's Republic of China
| | - Qingkang Xu
- Department of Urology, Jiaxing Ivy Hospital, Jiaxing, Zhejiang, People's Republic of China
| | - Yuehong Zhang
- Department of Urology, China Coast Guard of the Chinese People Armed Police Force Corps Hospital, Jiaxing, Zhejiang, People's Republic of China
| | - Xiu Wang
- Nanhu College of Jiaxing University, Jiaxing, Zhejiang, People's Republic of China
| | - Xuan Zhu
- School of Food Science and Bioengineering, Zhejiang Gongshang University, Hangzhou, Zhejiang, People's Republic of China.
| | - Jian Ying
- COFCO Nutrition and Health Research Institute, Beijing, China
| | - Yubiao Shen
- Yangtze Delta Region Institute of Tsinghua University, Zhejiang, People's Republic of China
| | - Wei Ji
- Yangtze Delta Region Institute of Tsinghua University, Zhejiang, People's Republic of China
| | - Shufeng Si
- Shandong Zhongke-jiayi Bioengineering Co., Ltd, Weifang, People's Republic of China
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Noto A, Pomero G, Mussap M, Barberini L, Fattuoni C, Palmas F, Dalmazzo C, Delogu A, Dessì A, Fanos V, Gancia P. Urinary gas chromatography mass spectrometry metabolomics in asphyxiated newborns undergoing hypothermia: from the birth to the first month of life. ANNALS OF TRANSLATIONAL MEDICINE 2016; 4:417. [PMID: 27942508 DOI: 10.21037/atm.2016.11.27] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
BACKGROUND Perinatal asphyxia is a severe clinical condition affecting around four million newborns worldwide. It consists of an impaired gas exchange leading to three biochemical components: hypoxemia, hypercapnia and metabolic acidosis. METHODS The aim of this longitudinal experimental study was to identify the urine metabolome of newborns with perinatal asphyxia and to follow changes in urine metabolic profile over time. Twelve babies with perinatal asphyxia were included in this study; three babies died on the eighth day of life. Total-body cooling for 72 hours was carried out in all the newborns. Urine samples were collected in each baby at birth, after 48 hours during hypothermia, after the end of the therapeutic treatment (72 hours), after 1 week of life, and finally after 1 month of life. Urine metabolome at birth was considered the reference against which to compare metabolic profiles in subsequent samples. Quantitative metabolic profiling in urine samples was measured by gas chromatography mass spectrometry (GC-MS). The statistical approach was conducted by using the multivariate analysis by means of principal component analysis (PCA) and orthogonal partial least square discriminant analysis (OPLS-DA). Pathway analysis was also performed. RESULTS The most important metabolites depicting each time collection point were identified and compared each other. At birth before starting therapeutic hypothermia (TH), urine metabolic profiles of the three babies died after 7 days of life were closely comparable each other and significantly different from those in survivors. CONCLUSIONS In conclusion, a plethora of data have been extracted by comparing the urine metabolome at birth with those observed at each time point collection. The modifications over time in metabolites composition and concentration, mainly originated from the depletion of cellular energy and homeostasis, seems to constitute a fingerprint of perinatal asphyxia.
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Affiliation(s)
- Antonio Noto
- Department of Surgical Sciences, University of Cagliari and Neonatal Intensive Care Unit, Puericulture Institute and Neonatal Section, Azienda Ospedaliera Universitaria, Cagliari, Italy
| | - Giulia Pomero
- Neonatal Intensive Care, Neonatology, ASO S. Croce e Carle, Cuneo, Italy
| | - Michele Mussap
- Laboratory Medicine Service, IRCCS AOU San Martino-IST, University-Hospital, Genoa, Italy
| | - Luigi Barberini
- Department of Medical Sciences and Public Health, University of Cagliari, Cagliari, Italy
| | - Claudia Fattuoni
- Department of Chemical and Geological Sciences, University of Cagliari, Cagliari, Italy
| | - Francesco Palmas
- Department of Chemical and Geological Sciences, University of Cagliari, Cagliari, Italy
| | - Cristina Dalmazzo
- Neonatal Intensive Care, Neonatology, ASO S. Croce e Carle, Cuneo, Italy
| | - Antonio Delogu
- Neonatal Intensive Care, Neonatology, ASO S. Croce e Carle, Cuneo, Italy
| | - Angelica Dessì
- Department of Surgical Sciences, University of Cagliari and Neonatal Intensive Care Unit, Puericulture Institute and Neonatal Section, Azienda Ospedaliera Universitaria, Cagliari, Italy
| | - Vassilios Fanos
- Department of Surgical Sciences, University of Cagliari and Neonatal Intensive Care Unit, Puericulture Institute and Neonatal Section, Azienda Ospedaliera Universitaria, Cagliari, Italy
| | - Paolo Gancia
- Neonatal Intensive Care, Neonatology, ASO S. Croce e Carle, Cuneo, Italy
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Castellaro AM, Tonda A, Cejas HH, Ferreyra H, Caputto BL, Pucci OA, Gil GA. Oxalate induces breast cancer. BMC Cancer 2015; 15:761. [PMID: 26493452 PMCID: PMC4618885 DOI: 10.1186/s12885-015-1747-2] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2014] [Accepted: 10/09/2015] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Microcalcifications can be the early and only presenting sign of breast cancer. One shared characteristic of breast cancer is the appearance of mammographic mammary microcalcifications that can routinely be used to detect breast cancer in its initial stages, which is of key importance due to the possibility that early detection allows the application of more conservative therapies for a better patient outcome. The mechanism by which mammary microcalcifications are formed is still largely unknown but breast cancers presenting microcalcifications are more often associated with a poorer prognosis. METHODS We combined Capillary Electrochromatography, histology, and gene expression (qRT-PCR) to analyze patient-matched normal breast tissue vs. breast tumor. Potential carcinogenicity of oxalate was tested by its inoculation into mice. All data were subjected to statistical analysis. RESULTS To study the biological significance of oxalates within the breast tumor microenvironment, we measured oxalate concentration in both human breast tumor tissues and adjoining non-pathological breast tissues. We found that all tested breast tumor tissues contain a higher concentration of oxalates than their counterpart non-pathological breast tissue. Moreover, it was established that oxalate induces proliferation of breast cells and stimulates the expression of a pro-tumorigenic gene c-fos. Furthermore, oxalate generates highly malignant and undifferentiated tumors when it was injected into the mammary fatpad in female mice, but not when injected into their back, indicating that oxalate does not induce cancer formation in all types of tissues. Moreover, neither human kidney-epithelial cells nor mouse fibroblast cells proliferate when are treated with oxalate. CONCLUSIONS We found that the chronic exposure of breast epithelial cells to oxalate promotes the transformation of breast cells from normal to tumor cells, inducing the expression of a proto-oncogen as c-fos and proliferation in breast cancer cells. Furthermore, oxalate has a carcinogenic effect when injected into the mammary fatpad in mice, generating highly malignant and undifferentiated tumors with the characteristics of fibrosarcomas of the breast. As oxalates seem to promote these differences, it is expected that a significant reduction in the incidence of breast cancer tumors could be reached if it were possible to control oxalate production or its carcinogenic activity.
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Affiliation(s)
- Andrés M Castellaro
- Departamento de Química Biológica, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba- CIQUIBIC, CONICET, Córdoba, Argentina.
| | - Alfredo Tonda
- Primera Cátedra de Ginecología, Hospital Nacional de Clínicas, Universidad Nacional de Córdoba, Córdoba, Argentina.
| | - Hugo H Cejas
- Cátedra de Patología, Hospital Nacional de Clínicas, Universidad Nacional de Córdoba, Córdoba, Argentina.
| | - Héctor Ferreyra
- Primera Cátedra de Ginecología, Hospital Nacional de Clínicas, Universidad Nacional de Córdoba, Córdoba, Argentina.
| | - Beatriz L Caputto
- Departamento de Química Biológica, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba- CIQUIBIC, CONICET, Córdoba, Argentina.
| | - Oscar A Pucci
- Primera Cátedra de Ginecología, Hospital Nacional de Clínicas, Universidad Nacional de Córdoba, Córdoba, Argentina.
| | - German A Gil
- Departamento de Química Biológica, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba- CIQUIBIC, CONICET, Córdoba, Argentina.
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Marengo SR, Zeise BS, Wilson CG, MacLennan GT, Romani AMP. The trigger-maintenance model of persistent mild to moderate hyperoxaluria induces oxalate accumulation in non-renal tissues. Urolithiasis 2013; 41:455-66. [PMID: 23821183 DOI: 10.1007/s00240-013-0584-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2012] [Accepted: 06/15/2013] [Indexed: 10/26/2022]
Abstract
Persistent mild to moderate hyperoxaluria (PMMH) is a common side effect of bariatric surgery. However, PMMH's role in the progression to calcium oxalate (CaOx) urolithiasis and its potential effects on non-renal tissues are unknown. To address these points, a trigger + maintenance (T + Mt) model of PMMH was developed in rats (Experiment 1). The trigger was an i.p. injection of PBS (TPBS) or 288 μmol sodium oxalate (T288). Maintenance (Mt) was given via minipumps dispensing PBS or 7.5-30 μmol potassium oxalate/day for 28 days. Urinary oxalate ranged from 7.7 ± 0.8 μmol/day for TPBS + MtPBS to 18.2 ± 1.5 μmol/day for T288 + Mt30 (p ≤ 0.0005). All rats receiving T288 developed CaOx nephrocalcinosis, and many developed 'stones'. This was also true for Mt doses that did not elevate urinary oxalate above that of TPBS + MtPBS (p > 0.1) and for rats that did not have a detectable surge in urinary oxalate post T288. When TPBS was administered, CaOx nephrocalcinosis did not develop regardless of the Mt dose even if urinary oxalate was elevated compared to TPBS + MtPBS (p ≤ 0.0005). One of the risks associated with PMMH is oxalate accumulation within tissues. Hence, in a second set of experiments (Experiment 2) different doses of oxalate (Mt0.05, Mt15, Mt30) labeled with (14)C-oxalate ((14)C-Ox) were administered by minipump for 13 days. Tissues were harvested and (14)C-Ox accumulation assessed by scintillation counting. (14)C-Ox accumulated in a dose dependent manner (p ≤ 0.004) in bone, kidney, muscle, liver, heart, kidney, lungs, spleen, and testis. All these tissues exhibited (14)C-Ox concentrations higher (p ≤ 0.05) than the plasma. Extrapolation of our results to patients suggests that PMMH patients should take extra care to avoid dietary-induced spikes in oxalate excretion to help prevent CaOx nephrocalcinosis or stone development. Monitoring for oxalate accumulation within tissues susceptible to damage by oxalate or CaOx crystals may also be required.
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Affiliation(s)
- Susan Ruth Marengo
- Department of Physiology and Biophysics, School of Medicine, Case Western Reserve University, 10900 Euclid Avenue, Cleveland, OH, 44106-4970, USA,
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