scholarly journals The Microbiota of Breast Tissue and Its Association with Breast Cancer

2016 ◽  
Vol 82 (16) ◽  
pp. 5039-5048 ◽  
Author(s):  
Camilla Urbaniak ◽  
Gregory B. Gloor ◽  
Muriel Brackstone ◽  
Leslie Scott ◽  
Mark Tangney ◽  
...  
Keyword(s):  
Breast Cancer ◽  
Cancer Patients ◽  
Breast Tissue ◽  
Cancer Development ◽  
Disease Development ◽  
Breast Cancer Patients ◽  
Content Type ◽  
Adjacent Tissue ◽  
Breast Cancer Development ◽  
Normal Adjacent Tissue

ABSTRACTIn the United States, 1 in 8 women will be diagnosed with breast cancer in her lifetime. Along with genetics, the environment contributes to disease development, but what these exact environmental factors are remains unknown. We have previously shown that breast tissue is not sterile but contains a diverse population of bacteria. We thus believe that the host's local microbiome could be modulating the risk of breast cancer development. Using 16S rRNA amplicon sequencing, we show that bacterial profiles differ between normal adjacent tissue from women with breast cancer and tissue from healthy controls. Women with breast cancer had higher relative abundances ofBacillus,EnterobacteriaceaeandStaphylococcus.Escherichia coli(a member of theEnterobacteriaceaefamily) andStaphylococcus epidermidis, isolated from breast cancer patients, were shown to induce DNA double-stranded breaks in HeLa cells using the histone-2AX (H2AX) phosphorylation (γ-H2AX) assay. We also found that microbial profiles are similar between normal adjacent tissue and tissue sampled directly from the tumor. This study raises important questions as to what role the breast microbiome plays in disease development or progression and how we can manipulate this for possible therapeutics or prevention.IMPORTANCEThis study shows that different bacterial profiles in breast tissue exist between healthy women and those with breast cancer. Higher relative abundances of bacteria that had the ability to cause DNA damagein vitrowere detected in breast cancer patients, as was a decrease in some lactic acid bacteria, known for their beneficial health effects, including anticarcinogenic properties. This study raises important questions as to the role of the mammary microbiome in modulating the risk of breast cancer development.

scholarly journals Pilot Study to Determine Prevalence of CYP2B6*6,CYP2C19*2 and CYP2C19*3 in Breast Cancer Patients Versus Normal Healthy Controls Among Three Major Ethnic Groups in Singapore

2021 ◽  
Author(s):  
Gaik-Hong Soon ◽  
Seok Hwee Koo ◽  
Pei Ting Tan ◽  
Lawrence Soon-U Lee ◽  
Chee Kian Tham ◽  
...  
Keyword(s):  
Breast Cancer ◽  
Cancer Therapy ◽  
Cancer Patients ◽  
Chinese Population ◽  
Cancer Development ◽  
Categorical Variables ◽  
Healthy Controls ◽  
Breast Cancer Patients ◽  
Breast Cancer Therapy ◽  
Breast Cancer Development

Abstract Background: Breast cancer is the top cancer suffered by women worldwide and has been identified to be the greatest killer for women living in Singapore. Unfortunately, most of breast cancer cases were detected only at later stage of disease development. This has crippled the effort of breast cancer therapy. As early detection of breast cancer could greatly improve the outcome of breast cancer therapy, it is of utmost importance to identify relevant biomarkers at the primitive stage of breast cancer development before the transformation of normal breast cells into cancerous cells. These biomarkers provide important clues leading to an efficient and targeted treatment approach in breast cancer preventive care.Methods: 455 breast cancer patients were consented to join this study. Buccal swabs were collected for genotyping on CYP2B6*6, CYP2C19 *2 & CYP2C19*3. The genotyping data were then compared to data collected from healthy individuals. Clinical data were collected from patient notes and analysed. All the statistical analyses were done using SPSS statistical software, version 19.0. Chi-square or Fisher’s Exact test were performed to examine the difference between subject’s characteristics for categorical variables and One-Way Anova was performed to assess age difference across alleles of CYP2B6*6, CYP2C19*2 and CYP2C19*3. Binary logistics regression was performed to identify demographic factors associated with breast cancer.Results: We reported thatCYP2B6*6 could be a risk factor leading to earlier onset of breast cancer among Indian population with OR found to be 1.69 (95% C.I.= 0.549-5.191, p=0.359). In the case of CYP2C19*2, OR is 1.57 for Malay (95% C.I. = 0.696-3.522, p=0.278); 1.15 for Chinese population (95% C.I. =0.862-1.545, p=0.335) and 1.03 for Indian (95% C.I. =0.301-3.496, p=0.968). CYP2C19*3 OR in Chinese population is 1.34 (95% C.I. =0.830-2.155, p=0.231) and 0.77 (95% C.I. =0.172-3.394, p=0.724) for Malay population. No CYP2C19*3 was detected in both cohorts of Indian patients and healthy controls. Conclusions: CYP2B6*6 and CYP2C19*2 polymorphisms may confer a risk for breast cancer development in Singaporean breast cancer patients. This is an exploratory study to identify potential breast cancer susceptibility gene polymorphisms, a bigger sample size study could be done to corroborate these findings in future studies.

Adopting a knowledge translation approach in healthcare co-production. A case study

2020 ◽  
Vol 58 (9) ◽  
pp. 1841-1862 ◽  
Author(s):  
Francesca Dal Mas ◽  
Helena Biancuzzi ◽  
Maurizio Massaro ◽  
Luca Miceli
Keyword(s):  
Breast Cancer ◽  
Knowledge Translation ◽  
Cancer Patients ◽  
Healthcare Sector ◽  
Emotional Engagement ◽  
Breast Cancer Patients ◽  
Case Study Methodology ◽  
Content Type ◽  
Production Program

PurposeThe paper aims to contribute to the debate concerning the use of knowledge translation for implementing co-production processes in the healthcare sector. The study investigates a case study, in which design was used to trigger knowledge translation and foster co-production.Design/methodology/approachThe paper employs a case study methodology by analysing the experience of “Oncology in Motion”, a co-production program devoted to the recovery of breast cancer patients carried on by the IRCCS C.R.O. of Aviano, Italy.FindingsResults show how design could help to translate knowledge from various stakeholders with different skills (e.g. scientists, physicians, nurses) and emotional engagement (e.g. patients and patients' associations) during all the phases of a co-production project to support breast cancer patients in a recovery path. Stewardship theory is used to show that oncology represents a specific research context.Practical implicationsThe paper highlights the vast practical contribution that design can have in empowering knowledge translation at different levels and in a variety of co-production phases, among different stakeholders, facilitating their engagement and the achievement of the desired outcomes.Originality/valueThe paper contributes to the literature on knowledge translation in co-production projects in the healthcare sector showing how design can be effectively implemented.

scholarly journals Age-related DNA methylation in paired normal and tumour breast tissue in Chinese breast cancer patients

Epigenetics ◽  
2020 ◽  
pp. 1-15
Author(s):  
Maeve Kiely ◽  
Lap Ah Tse ◽  
Hela Koka ◽  
Difei Wang ◽  
Priscilla Lee ◽  
...  
Keyword(s):  
Breast Cancer ◽  
Dna Methylation ◽  
Cancer Patients ◽  
Breast Tissue ◽  
Breast Cancer Patients ◽  
Age Related

scholarly journals SYSTEMATIC REVIEW AND METAANALYSIS OF THE RESULTS OF BREAST-CONSERVING SURGERY AFTER NEOADJUVANT CHEMOTHERAPY IN BREAST CANCER PATIENTS

2021 ◽  
Vol 20 (2) ◽  
pp. 118-126
Author(s):  
A. R. Bosieva ◽  
M. V. Ermoshchenkova ◽  
A. D. Zikiryakhodzhayev ◽  
N. N. Volchenko
Keyword(s):  
Breast Cancer ◽  
Neoadjuvant Chemotherapy ◽  
Cancer Patients ◽  
Breast Tissue ◽  
Breast Conserving Surgery ◽  
Resection Margins ◽  
Breast Cancer Patients ◽  
Inclusion Criteria ◽  
Positive Resection Margins ◽  
Cosmetic Outcomes

Background. Neoadjuvant chemotherapy (NACT) is a standard of care for locally advanced breast cancer patients. One of the main advantages of NACT is the reduction of the tumor size and regression of lymph node metastasis.The aim of the study was to analyze the outcomes of breast-conserving surgery after NACT compared to adjuvant chemotherapy, including the examination of the width of resection margins and the frequency of re-operations, the volume of tissue removed and cosmetic outcomes.Material and Methods. We analyzed 1219 publications available from pubMed, Medline, Cochrane Library, 1057 of them did not meet the inclusion criteria, 162 publications were selected to cover all the following inclusion criteria: surgical margin status, frequency of re-operations, volume of tissue removed and cosmetic outcomes. Finally, 22 studies met fully specified criteria.Results. Studies included in this review demonstrated a different frequency of positive resection margins (2–39.8 %), reoperations (0–45.4 %), the volume of tissue removed (43.2–268 cm3), and the weight of the resected breast tissue (26.4–233 grams) after NACT.  Conclusion. The data obtained showed a decrease in the frequency of positive resection margins and re-operations in patients who received NACT compared to patients who did not receive NACT (5–39.8 % versus 13.1–46 % and 0–45.4 % versus 0–76.5 %, respectively), as well as a decrease in the amount of the removed breast tissue without the negative effect on the frequency of resection margins, thus allowing minimization of the extent of surgery and improvement of cosmetic outcomes.

scholarly journals Arsenic Induced Breast Cancer Risk in Population of Bihar, India

2021 ◽  
Author(s):  
Arun Kumar ◽  
Mohammad Ali ◽  
Pintoo Kumar Niraj ◽  
Vivek Akhouri ◽  
Vikas Kumar ◽  
...  
Keyword(s):  
Breast Cancer ◽  
Cancer Patients ◽  
Biological Samples ◽  
Breast Tissue ◽  
Arsenic Concentration ◽  
Arsenic Contamination ◽  
The State ◽  
Control Group ◽  
Breast Cancer Patients ◽  
Female Breast

Abstract Globally, ~ 300 million people are exposed to arsenic poisoning while in India an estimated 70 million people are affected by consumption of arsenic contaminated water. The state of Bihar is an endemic belt for arsenic contamination in groundwater affecting over 10 million people with moderate to serious health manifestations. Life threatening disease like cancer is not uncommon now, and carcinoma type of cancer cases are on the rise. Breast cancer incidences in the state follows closely with more and more women getting affected. Approximately, 23% of the cancer types in women are related to breast cancer, diagnosed at a fairly advanced stage (III or IV) of the disease. The etiology of the disease is not clearly known though faulty lifestyle and genetic makeup cannot be ruled out. The present study attempts to derive a relation between increasing breast cancer cases with the sustained arsenic intake in the second most populated state of the country. Pathologically confirmed, female breast cancer patients (n = 55) from across the state were included in the study. Sampling of the breast tissue, blood, hair and toe nail was carried out by the surgical oncology department of the institute. As a part of cross-sectional study, (n = 12) female breast benign cases were taken as the control group and their biological samples were also collected. All the samples as per the protocol of NIOSH were digested and analysed by graphite furnace atomic absorption spectrophotometer. For the epidemiological parameter study, their age, type of malignancy, stage and demographic information was compiled. The results were correlated with the arsenic concentration in groundwater as per their endemic status and anomalous values on GIS platform. The role of geological studies to establish the morpho-stratigraphic control and aquifers with higher concentration was brought to use. The results are fairly indicative of the high correlation of anomalous concentration of arsenic with the sample population with diagnosed malignancy as compared to the control group. The maximum arsenic concentration observed in the biological samples in blood was 1856µg/L, in breast tissue 446.4µg/Kg, in hair 1296·9µg/Kg and in toenail 621·83µg/Kg respectively. The scattered plots correlate the relationship between age of the breast cancer patients with arsenic contamination, while the geospatial distribution positively correlates with the districts with increased arsenic endemicity in a predominantly alluvium dominated country. The high arsenic contamination in the biological samples of the breast cancer patients is an indicative marker to the possible relation of the disease to arsenic, as compared to the control population exposed to a much lesser toxicity. Consumption of water with more than 10 ppb arsenic contamination over a sustained longer time span has possibly exposed the population to a larger threat to disease as inferred from the findings. The disease breeding as a silent killer with reduced or unnoticeable symptoms upto a fairly advanced stage has further accentuated the problem. The present study thus endeavours to identify a significant relation of the disease with sustained intake of arsenic consumed through water and food products laden with anomalous concentration.

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