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Mikó E, Sipos A, Tóth E, Lehoczki A, Fekete M, Sebő É, Kardos G, Bai P. Guideline for designing microbiome studies in neoplastic diseases. GeroScience 2024:10.1007/s11357-024-01255-4. [PMID: 38922379 DOI: 10.1007/s11357-024-01255-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2024] [Accepted: 06/12/2024] [Indexed: 06/27/2024] Open
Abstract
Oncobiosis has emerged as a key contributor to the development, and modulator of the treatment efficacy of cancer. Hereby, we review the modalities through which the oncobiome can support the progression of tumors, and the emerging therapeutic opportunities they present. The review highlights the inherent challenges and limitations faced in sampling and accurately characterizing oncobiome. Additionally, the review underscores the critical need for the standardization of microbial analysis techniques and the consistent reporting of microbiome data. We provide a suggested metadata set that should accompany microbiome datasets from oncological settings so that studies remain comparable and decipherable.
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Affiliation(s)
- Edit Mikó
- Department of Medical Chemistry, Faculty of Medicine, University of Debrecen, Egyetem Tér 1., 4032, Debrecen, Hungary
| | - Adrienn Sipos
- Department of Medical Chemistry, Faculty of Medicine, University of Debrecen, Egyetem Tér 1., 4032, Debrecen, Hungary
| | - Emese Tóth
- Department of Medical Chemistry, Faculty of Medicine, University of Debrecen, Egyetem Tér 1., 4032, Debrecen, Hungary
- HUN-REN-DE Cell Biology and Signaling Research Group, 4032, Debrecen, Hungary
| | - Andrea Lehoczki
- Department of Hematology and Stem Cell Transplantation, South Pest Central Hospital-National Institute for Hematology and Infectious Diseases, Budapest, Hungary
- Doctoral College, Health Sciences Program, Semmelweis University, Budapest, Hungary
- Department of Public Health, Semmelweis University, Budapest, Hungary
| | - Monika Fekete
- Department of Public Health, Semmelweis University, Budapest, Hungary
| | - Éva Sebő
- Breast Center, Kenézy Gyula Hospital, University of Debrecen, 4032, Debrecen, Hungary
| | - Gábor Kardos
- Department of Metagenomics, University of Debrecen, 4032, Debrecen, Hungary
- Faculty of Health Sciences, One Health Institute, University of Debrecen, 4032, Debrecen, Hungary
| | - Péter Bai
- Department of Medical Chemistry, Faculty of Medicine, University of Debrecen, Egyetem Tér 1., 4032, Debrecen, Hungary.
- HUN-REN-DE Cell Biology and Signaling Research Group, 4032, Debrecen, Hungary.
- MTA-DE Lendület Laboratory of Cellular Metabolism, 4032, Debrecen, Hungary.
- Research Center for Molecular Medicine, Faculty of Medicine, University of Debrecen, 4032, Debrecen, Hungary.
- Center of Excellence, The Hungarian Academy of Sciences, Budapest, Hungary.
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Luan B, Ge F, Lu X, Li Z, Zhang H, Wu J, Yang Q, Chen L, Zhang W, Chen W. Changes in the fecal microbiota of breast cancer patients based on 16S rRNA gene sequencing: a systematic review and meta-analysis. Clin Transl Oncol 2024; 26:1480-1496. [PMID: 38217684 DOI: 10.1007/s12094-023-03373-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2023] [Accepted: 12/04/2023] [Indexed: 01/15/2024]
Abstract
PURPOSE Breast cancer (BC) is a devastating disease for women. Microbial influences may be involved in the development and progression of breast cancer. This study aimed to investigate the difference in intestinal flora abundance between breast cancer patients and healthy controls (HC) based on previous 16S ribosomal RNA (rRNA) gene sequencing results, which have been scattered and inconsistent in previous studies. MATERIALS AND METHODS In agreement with the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA), we searched for pertinent literature in Pubmed, Embase, Cochrane Library, and Web of Science databases from build until February 1, 2023. Relative abundance, diversity of intestinal microflora by level, microbial composition, community structure, diversity index, and other related data were extracted. We used a fixed or random effects model for data analysis. We also conducted funnel plot analysis, sensitivity analysis, Egger's, and Begg's tests to assess the bias risk. RESULTS A total of ten studies involving 734 BC patients were enrolled. It was pointed out that there were significant differences in the Chao index between BC and HC in these studies [SMD = - 175.44 (95% CI - 246.50 to - 104.39)]. The relative abundance of Prevotellaceae [SMD = - 0.27 (95% CI - 0.39 to - 0.15)] and Bacteroides [SMD = 0.36 (95% CI 0.23-0.49)] was significantly different. In the included articles, the relative abundance of Prevotellaceae, Ruminococcus, Roseburia inulinivorans, and Faecalibacterium prausnitzii decreased in BC. Accordingly, the relative richness of Erysipelotrichaceae was high in BC. CONCLUSIONS This observational meta-analysis revealed that the changes in gut microbiota were correlated with BC, and the changes in some primary fecal microbiota might affect the beginning of breast cancer.
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Affiliation(s)
- Biqing Luan
- Department of Breast Surgery, First Affiliated Hospital, Kunming Medical University, Kunming, China
- No. 1 School of Clinical Medicine, Kunming Medical University, Kunming, China
| | - Fei Ge
- Department of Breast Surgery, First Affiliated Hospital, Kunming Medical University, Kunming, China
| | - Xingjia Lu
- Department of Breast Surgery, First Affiliated Hospital, Kunming Medical University, Kunming, China
- No. 1 School of Clinical Medicine, Kunming Medical University, Kunming, China
| | - Zhiqiang Li
- Department of Breast Surgery, First Affiliated Hospital, Kunming Medical University, Kunming, China
- No. 1 School of Clinical Medicine, Kunming Medical University, Kunming, China
| | - Hong Zhang
- Department of Breast Surgery, First Affiliated Hospital, Kunming Medical University, Kunming, China
- No. 1 School of Clinical Medicine, Kunming Medical University, Kunming, China
| | - Jingxuan Wu
- Department of Breast Surgery, First Affiliated Hospital, Kunming Medical University, Kunming, China
- No. 1 School of Clinical Medicine, Kunming Medical University, Kunming, China
| | - Qizhi Yang
- Department of Breast Surgery, First Affiliated Hospital, Kunming Medical University, Kunming, China
- No. 1 School of Clinical Medicine, Kunming Medical University, Kunming, China
| | - Liang Chen
- Department of Breast Surgery, First Affiliated Hospital, Kunming Medical University, Kunming, China
| | - Wenzhu Zhang
- Department of Breast Surgery, First Affiliated Hospital, Kunming Medical University, Kunming, China
- No. 1 School of Clinical Medicine, Kunming Medical University, Kunming, China
| | - Wenlin Chen
- Third Department of Breast Surgery, Third Affiliated Hospital, Kunming Medical University, Kunming, China.
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Soldado-Gordillo A, Álvarez-Mercado AI. Epigenetics, Microbiota, and Breast Cancer: A Systematic Review. Life (Basel) 2024; 14:705. [PMID: 38929688 DOI: 10.3390/life14060705] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2024] [Revised: 05/14/2024] [Accepted: 05/28/2024] [Indexed: 06/28/2024] Open
Abstract
Breast cancer is the most frequently diagnosed cancer in women worldwide. According to recent studies, alterations in the microbiota and epigenetic modulations are risk factors for this disease. This systematic review aims to determine the possible associations between the intestinal and mammary microbial populations, epigenetic modifications, and breast cancer. To achieve this objective, we conducted a literature search in the PubMed, Web of Science, and Science Direct databases following the PRISMA guidelines. Although no results are yet available in humans, studies in mice suggest a protective effect of maternal dietary interventions with bioactive compounds on the development of breast tumors in offspring. These dietary interventions also modified the gut microbiota, increasing the relative abundance of short-chain fatty acid-producing taxa and preventing mammary carcinogenesis. In addition, short-chain fatty acids produced by the microbiota act as epigenetic modulators. Furthermore, some authors indicate that stress alters the gut microbiota, promoting breast tumor growth through epigenetic and gene expression changes in the breast tumor microenvironment. Taken together, these findings show the ability of epigenetic modifications and alterations of the microbiota associated with environmental factors to modulate the development, aggressiveness, and progression of breast cancer.
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Affiliation(s)
- Alba Soldado-Gordillo
- Department of Biochemistry and Molecular Biology 2, School of Pharmacy, Campus de Cartuja s/n, 18071 Granada, Spain
| | - Ana Isabel Álvarez-Mercado
- Department Pharmacology, School of Pharmacy, Campus de Cartuja s/n, 18071 Granada, Spain
- Institute of Nutrition and Food Technology "José Mataix", Biomedical Research Center, Parque Tecnológico Ciencias de la Salud, Avda. del Conocimiento s/n, Armilla, 18016 Granada, Spain
- Instituto de Investigación Biosanitaria ibs.GRANADA, Complejo Hospitalario Universitario de Granada, 18071 Granada, Spain
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Fan P, Ding L, Du G, Wei C. Effect of mastectomy on gut microbiota and its metabolites in patients with breast cancer. Front Microbiol 2024; 15:1269558. [PMID: 38860221 PMCID: PMC11163111 DOI: 10.3389/fmicb.2024.1269558] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2023] [Accepted: 04/30/2024] [Indexed: 06/12/2024] Open
Abstract
Background The relationship between gut microbiota and breast cancer has been extensively studied; however, changes in gut microbiota after breast cancer surgery are still largely unknown. Materials and methods A total of 20 patients with breast cancer underwent routine open surgery at the First Affiliated Hospital of Hainan Medical College from 1 June 2022 to 1 December 2022. Stool samples were collected from the patients undergoing mastectomy for breast cancer preoperatively, 3 days later, and 7 days later postoperatively. The stool samples were subjected to 16s rRNA sequencing. Results Surgery did not affect the α-diversity of gut microbiota. The β-diversity and composition of gut microorganisms were significantly affected by surgery in breast cancer patients. Both linear discriminant analysis effect size (LEfSe) analysis and between-group differences analysis showed that surgery led to a decrease in the abundance of Firmicutes and Lachnospiraceae and an increase in the abundance of Proteobacteria and Enterobacteriaceae. Moreover, 127 differential metabolites were screened and classified into 5 categories based on their changing trends. The Kyoto Encyclopedia of Genes and Genomes (KEGG) enrichment analysis showed significant changes in the phenylalanine metabolic pathway and exogenous substance metabolic pathway. Eight characterized metabolites were screened using ROC analysis. Conclusion Our study found that breast cancer surgery significantly altered gut microbiota composition and metabolites, with a decrease in beneficial bacteria and an increase in potentially harmful bacteria. This underscores the importance of enhanced postoperative management to optimize gut microbiota.
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Affiliation(s)
- Pingming Fan
- Department of Breast Surgery, Guangxi Medical University Cancer Hospital, Nanning, China
- Department of Breast Surgery, The First Affiliated Hospital of Hainan Medical University, Haikou, China
| | - Linwei Ding
- Department of Biochemistry and Molecular Biology, Hainan Medical University, Haikou, China
| | - Guankui Du
- Department of Breast Surgery, The First Affiliated Hospital of Hainan Medical University, Haikou, China
- Department of Biochemistry and Molecular Biology, Hainan Medical University, Haikou, China
| | - Changyuan Wei
- Department of Breast Surgery, Guangxi Medical University Cancer Hospital, Nanning, China
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Wang S, Kou GJ, Zhao XH, Huang G, Wang JX, Tian L, Zuo XL, Li YQ, Wang JY, Yu YB. Altered mucosal bacteria and metabolomics in patients with Peutz-Jeghers syndrome. Gut Pathog 2024; 16:25. [PMID: 38678229 PMCID: PMC11056063 DOI: 10.1186/s13099-024-00617-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/08/2023] [Accepted: 04/19/2024] [Indexed: 04/29/2024] Open
Abstract
BACKGROUND Peutz-Jeghers syndrome (PJS) is a rare genetic disorder characterized by the development of pigmented spots, gastrointestinal polyps and increased susceptibility to cancers. Currently, most studies have investigated intestinal microbiota through fecal microbiota, and there are few reports about mucosa-associated microbiota. It remains valuable to search for the key intestinal microbiota or abnormal metabolic pathways linked to PJS. AIM This study aimed to assess the structure and composition of mucosa-associated microbiota in patients with PJS and to explore the potential influence of intestinal microbiota disorders and metabolite changes on PJS. METHODS The bacterial composition was analyzed in 13 PJS patients and 12 controls using 16S rRNA gene sequencing (Illumina MiSeq) for bacteria. Differential analyses of the intestinal microbiota were performed from the phylum to species level. Liquid chromatography-tandem mass spectrometry (LC‒MS) was used to detect the differentially abundant metabolites of PJS patients and controls to identify different metabolites and metabolic biomarkers of small intestinal mucosa samples. RESULTS High-throughput sequencing confirmed the special characteristics and biodiversity of the mucosa microflora in patients with PJS. They had lower bacterial biodiversity than controls. The abundance of intestinal mucosal microflora was significantly lower than that of fecal microflora. In addition, lipid metabolism, amino acid metabolism, carbohydrate metabolism, nucleotide metabolism and other pathways were significantly different from those of controls, which were associated with the development of the enteric nervous system, intestinal inflammation and development of tumors. CONCLUSION This is the first report on the mucosa-associated microbiota and metabolite profile of subjects with PJS, which may be meaningful to provide a structural basis for further research on intestinal microecology in PJS.
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Affiliation(s)
- Sui Wang
- Department of Respiratory Medicine, The Second Hospital of Shandong University, Jinan, 250033, Shandong, People's Republic of China
| | - Guan-Jun Kou
- Department of Gastroenterology, Qilu Hospital of Shandong University, 107 Wenhuaxi Road, Jinan, 250012, Shandong, People's Republic of China
| | - Xiao-Han Zhao
- Department of Gastroenterology, Qilu Hospital of Shandong University, 107 Wenhuaxi Road, Jinan, 250012, Shandong, People's Republic of China
| | - Gang Huang
- Department of Gastroenterology, Qilu Hospital of Shandong University, 107 Wenhuaxi Road, Jinan, 250012, Shandong, People's Republic of China
| | - Jue-Xin Wang
- Department of Gastroenterology, Qilu Hospital of Shandong University, 107 Wenhuaxi Road, Jinan, 250012, Shandong, People's Republic of China
| | - Lin Tian
- Department of Gastroenterology, Qilu Hospital of Shandong University, 107 Wenhuaxi Road, Jinan, 250012, Shandong, People's Republic of China
| | - Xiu-Li Zuo
- Department of Gastroenterology, Qilu Hospital of Shandong University, 107 Wenhuaxi Road, Jinan, 250012, Shandong, People's Republic of China
| | - Yan-Qing Li
- Department of Gastroenterology, Qilu Hospital of Shandong University, 107 Wenhuaxi Road, Jinan, 250012, Shandong, People's Republic of China
| | - Jia-Yong Wang
- Department of General Surgery, Qilu Hospital of Shandong University, Jinan, 250012, Shandong, People's Republic of China.
| | - Yan-Bo Yu
- Department of Gastroenterology, Qilu Hospital of Shandong University, 107 Wenhuaxi Road, Jinan, 250012, Shandong, People's Republic of China.
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Wang MY, Sang LX, Sun SY. Gut microbiota and female health. World J Gastroenterol 2024; 30:1655-1662. [PMID: 38617735 PMCID: PMC11008377 DOI: 10.3748/wjg.v30.i12.1655] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/25/2023] [Revised: 01/10/2024] [Accepted: 03/05/2024] [Indexed: 03/28/2024] Open
Abstract
The gut microbiota is recognized as an endocrine organ with the capacity to influence distant organs and associated biological pathways. Recent advancements underscore the critical role of gut microbial homeostasis in female health; with dysbiosis potentially leading to diseases among women such as polycystic ovarian syndrome, endometriosis, breast cancer, cervical cancer, and ovarian cancer etc. Despite this, there has been limited discussion on the underlying mechanisms. This editorial explores the three potential mechanisms through which gut microbiota dysbiosis may impact the development of diseases among women, namely, the immune system, the gut microbiota-estrogen axis, and the metabolite pathway. We focused on approaches for treating diseases in women by addressing gut microbiota imbalances through probiotics, prebiotics supplementation, and fecal microbiota transplantation (FMT). Future studies should focus on determining the molecular mechanisms underlying associations between dysbiosis of gut microbiota and female diseases to realize precision medicine, with FMT emerging as a promising intervention.
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Affiliation(s)
- Meng-Yao Wang
- Department of Gastroenterology, Shengjing Hospital of China Medical University, Shenyang 110022, Liaoning Province, China
| | - Li-Xuan Sang
- Department of Gastroenterology, Shengjing Hospital of China Medical University, Shenyang 110022, Liaoning Province, China
| | - Si-Yu Sun
- Department of Gastroenterology, Endoscopic Center, Engineering Research Center of Ministry of Education for Minimally Invasive Gastrointestinal Endoscopic Techniques, Shengjing Hospital of China Medical University, Shenyang 110004, Liaoning Province, China
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Vilhais G, Alpuim Costa D, Fontes-Sousa M, Ribeiro PC, Martinho F, Botelho de Sousa C, Santos CR, Negreiros I, Canastra A, Borralho P, Guia Pereira A, Marçal C, Germano Sousa J, Chaleira R, Rocha JC, Calhau C, Faria A. Case report: Primary CDK4/6 inhibitor and endocrine therapy in locally advanced breast cancer and its effect on gut and intratumoral microbiota. Front Oncol 2024; 14:1360737. [PMID: 38601755 PMCID: PMC11004348 DOI: 10.3389/fonc.2024.1360737] [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: 12/24/2023] [Accepted: 03/08/2024] [Indexed: 04/12/2024] Open
Abstract
Locally advanced breast cancer poses significant challenges to the multidisciplinary team, in particular with hormone receptor (HR) positive, HER2-negative tumors that classically yield lower pathological complete responses with chemotherapy. The increasingly significant use of CDK 4/6 inhibitors (CDK4/6i) plus endocrine therapy (ET) in different breast cancer settings has led to clinical trials focusing on this strategy as a primary treatment, with promising results. The impact of the microbiota on cancer, and vice-versa, is an emerging topic in oncology. The authors report a clinical case of a postmenopausal female patient with an invasive breast carcinoma of the right breast, Luminal B-like, staged as cT4cN3M0 (IIIB). Since the lesion was considered primarily inoperable, the patient started letrozole and ribociclib. Following 6 months of systemic therapy, the clinical response was significant, and surgery with curative intent was performed. The final staging was ypT3ypN2aM0, R1, and the patient started adjuvant letrozole and radiotherapy. This case provides important insights on primary CDK4/6i plus ET in locally advanced unresectable HR+/HER2- breast cancer and its potential implications in disease management further ahead. The patient's gut microbiota was analyzed throughout the disease course and therapeutic approach, evidencing a shift in gut microbial dominance from Firmicutes to Bacteroidetes and a loss of microbial diversity following 6 months of systemic therapy. The analysis of the intratumoral microbiota from the surgical specimen revealed high microbial dissimilarity between the residual tumor and respective margins.
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Affiliation(s)
- Guilherme Vilhais
- Haematology and Oncology Department, CUF Oncologia, Lisbon, Portugal
| | - Diogo Alpuim Costa
- Haematology and Oncology Department, CUF Oncologia, Lisbon, Portugal
- NOVA Medical School (NMS), Faculdade de Ciências Médicas (FCM), Universidade NOVA de Lisboa (UNL), Lisbon, Portugal
- Medical Oncology Department, Hospital de Cascais, Cascais, Portugal
- Breast Unit, CUF Oncologia, Lisbon, Portugal
| | - Mário Fontes-Sousa
- Haematology and Oncology Department, CUF Oncologia, Lisbon, Portugal
- Breast Unit, CUF Oncologia, Lisbon, Portugal
| | - Pedro Casal Ribeiro
- Bioinformatics Department, Centro de Medicina Laboratorial Germano de Sousa, Lisbon, Portugal
| | | | | | - Catarina Rodrigues Santos
- Breast Unit, CUF Oncologia, Lisbon, Portugal
- Surgery Department, Instituto Português de Oncologia de Lisboa Francisco Gentil (IPOL-FG), Lisbon, Portugal
| | | | - Ana Canastra
- Anatomic Pathology Department, CUF Oncologia, Lisbon, Portugal
| | - Paula Borralho
- Breast Unit, CUF Oncologia, Lisbon, Portugal
- Anatomic Pathology Department, CUF Oncologia, Lisbon, Portugal
- Institute of Anatomic Pathology, Faculdade de Medicina da Universidade de Lisboa (FMUL), Lisbon, Portugal
| | - Ana Guia Pereira
- Genetics Laboratory, Centro de Medicina Laboratorial Germano de Sousa, Lisbon, Portugal
| | - Cristina Marçal
- Clinical Pathology Department, Centro de Medicina Laboratorial Germano de Sousa, Lisbon, Portugal
| | - José Germano Sousa
- Clinical Pathology Department, Centro de Medicina Laboratorial Germano de Sousa, Lisbon, Portugal
| | - Renata Chaleira
- Psychology Department, CUF Descobertas Hospital, Lisbon, Portugal
| | - Júlio César Rocha
- NOVA Medical School (NMS), Faculdade de Ciências Médicas (FCM), Universidade NOVA de Lisboa (UNL), Lisbon, Portugal
- Centro de Investigação em Tecnologias e Serviços de Saúde (CINTESIS), Rede de Investigação em Saúde (RISE), NOVA Medical School (NMS), Faculdade de Ciências Médicas (FCM), Universidade NOVA de Lisboa (UNL), Lisbon, Portugal
- Unidade Universitária Lifestyle Medicine José de Mello Saúde, NOVA Medical School (NMS), Lisbon, Portugal
| | - Conceição Calhau
- NOVA Medical School (NMS), Faculdade de Ciências Médicas (FCM), Universidade NOVA de Lisboa (UNL), Lisbon, Portugal
- Centro de Investigação em Tecnologias e Serviços de Saúde (CINTESIS), Rede de Investigação em Saúde (RISE), NOVA Medical School (NMS), Faculdade de Ciências Médicas (FCM), Universidade NOVA de Lisboa (UNL), Lisbon, Portugal
- Unidade Universitária Lifestyle Medicine José de Mello Saúde, NOVA Medical School (NMS), Lisbon, Portugal
- Comprehensive Health Research Centre (CHRC), NOVA Medical School, Faculdade de Ciências Médicas, Lisbon, Portugal
| | - Ana Faria
- NOVA Medical School (NMS), Faculdade de Ciências Médicas (FCM), Universidade NOVA de Lisboa (UNL), Lisbon, Portugal
- Centro de Investigação em Tecnologias e Serviços de Saúde (CINTESIS), Rede de Investigação em Saúde (RISE), NOVA Medical School (NMS), Faculdade de Ciências Médicas (FCM), Universidade NOVA de Lisboa (UNL), Lisbon, Portugal
- Comprehensive Health Research Centre (CHRC), NOVA Medical School, Faculdade de Ciências Médicas, Lisbon, Portugal
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Li F, Li J, Tong M, Xi K, Guo S. Effect of electric fields strength on soil factors and microorganisms during electro-bioremediation of benzo[a]pyrene-contaminated soil. CHEMOSPHERE 2023; 341:139845. [PMID: 37634583 DOI: 10.1016/j.chemosphere.2023.139845] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/25/2023] [Revised: 08/11/2023] [Accepted: 08/14/2023] [Indexed: 08/29/2023]
Abstract
Electro-bioremediation is a promising technology for remediating soils contaminated with polycyclic aromatic hydrocarbons (PAHs). However, the resulting electrokinetic effects and electrochemical reactions may inevitably cause changes in soil factors and microorganism, thereby reducing the remediation efficiency. To avoid negative effect of electric field on soil and microbes and maximize microbial degradability, it is necessary to select a suitable electric field. In this study, artificial benzo [a]pyrene (BaP)-contaminated soil was selected as the object of remediation. Changes in soil factors and microorganisms were investigated under the voltage of 1.0, 2.0, and 2.5 V cm-1 using chemical analysis, real-time PCR, and high-throughput sequencing. The results revealed noticeable changes in soil factors (pH, moisture, electrical conductivity [EC], and BaP concentration) and microbes (PAHs ring-hydroxylating dioxygenase [PAHs-RHDα] gene and bacterial community) after the application of electric field. The degree of change was related to the electric field strength, with a suitable strength being more conducive to BaP removal. At 70 d, the highest mean extent of BaP removal and PAHs-RHDα gene copies were observed in EK2.0 + BIO, reaching 3.37 and 109.62 times those in BIO, respectively, indicating that the voltage of 2.0 V cm-1 was the most suitable for soil microbial growth and metabolism. Changes in soil factors caused by electric fields can affect microbial activity and community composition. Redundancy analysis revealed that soil pH and moisture had the most significant effects on microbial community composition (P < 0.05). The purpose of this study was to determine the appropriate electric field that could be used for electro-bioremediation of PAH-contaminated soil by evaluating the effects of electric fields on soil factors and microbial communities. This study also provides a reference for efficiency enhancement and successful application of electro-bioremediation of soil contaminated with PAHs.
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Affiliation(s)
- Fengmei Li
- Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China; National-Local Joint Engineering Laboratory of Contaminated Soil Remediation By Bio-physicochemical Synergistic Process, Shenyang 110016, China
| | - Jingming Li
- Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Menghan Tong
- Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Kailu Xi
- Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Shuhai Guo
- Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China; National-Local Joint Engineering Laboratory of Contaminated Soil Remediation By Bio-physicochemical Synergistic Process, Shenyang 110016, China.
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Liu K, Jia N, Shi H, Ran Y. Current and future research on the association between gut microbiota and breast cancer. Front Microbiol 2023; 14:1272275. [PMID: 38029117 PMCID: PMC10646191 DOI: 10.3389/fmicb.2023.1272275] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2023] [Accepted: 10/09/2023] [Indexed: 12/01/2023] Open
Abstract
Breast cancer (BC) is a prevalent malignancy. There exists a strong association between gut microbiota (GM) and the development of BC. The GM composition in individuals with BC significantly differs from that in their healthy counterparts. Furthermore, the distribution of GM varies significantly among individuals with different types of BC. The GM can impact BC through metabolite secretion, the gut-mammary axis, and other pathways. Modulating the GM can serve as a very promising potential therapeutic strategy in the treatment of BC. This article will summarize existing research, focusing on the relationship between intestinal microbiota and BC. At the same time, the project will also analyze the application value of intestinal microorganisms in BC intervention work, so as to provide a reference for the further development of BC prevention and treatment work.
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Affiliation(s)
| | - Nan Jia
- Affiliated Hospital of Hebei University, Baoding, China
| | - Hongyun Shi
- Affiliated Hospital of Hebei University, Baoding, China
| | - Yuge Ran
- Affiliated Hospital of Hebei University, Baoding, China
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