scholarly journals Cancer Incidence and Risk of Multiple Cancers after Environmental Asbestos Exposure in Childhood—A Long-Term Register-Based Cohort Study

2021 ◽  
Vol 19 (1) ◽  
pp. 268
Author(s):  
Sofie Bünemann Dalsgaard ◽  
Else Toft Würtz ◽  
Johnni Hansen ◽  
Oluf Dimitri Røe ◽  
Øyvind Omland
Keyword(s):  
Malignant Mesothelioma ◽  
Cancer Incidence ◽  
School Children ◽  
Asbestos Exposure ◽  
Registration System ◽  
Multiple Cancers ◽  
Increased Risk ◽  
Prevailing Wind Direction ◽  
Significant Difference ◽  
Reference Cohort

Objectives: To examine the asbestos-associated cancer incidence and the risk of multiple cancers in former school children exposed to environmental asbestos in childhood. Methods: A cohort of 12,111 former school children, born 1940–1970, was established using 7th grade school records from four schools located at a distance of 100–750 m in the prevailing wind direction from a large asbestos-cement plant that operated from 1928 to 1984 in Aalborg, Denmark. Using the unique Danish personal identification number, we linked information on employments, relatives’ employments, date of cancer diagnosis, and type of cancer and vital status to data on cohortees extracted from the Supplementary Pension Fund Register (employment history), the Danish Cancer Registry, and the Danish Civil Registration System. We calculated standardized incidence rates (SIRs) for asbestos-associated cancers, all cancers, and multiple cancers using rates for a gender and five-year frequency-matched reference cohort. Results: The overall incidence of cancer was modestly increased for the school cohort (SIR 1.07, 95% confidence interval (CI) 1.02–1.12) compared with the reference cohort. This excess was driven primarily by a significantly increased SIR for malignant mesothelioma (SIR 8.77, 95% CI 6.38–12.05). Former school children who had combined childhood environmental and subsequent occupational exposure to asbestos had a significantly increased risk of lung cancer. Within this group, those with additional household exposure by a relative had a significantly increased SIR for cancer of the pharynx (SIR 4.24, 95% CI 1.59–11.29). We found no significant difference in the number of subjects diagnosed with multiple cancers between the two cohorts. Conclusions: Our study confirms the strong association between environmental asbestos exposure and malignant mesothelioma and suggests that environmental asbestos exposure in childhood may increase the overall cancer risk later in life.

scholarly journals Asbestos exposure and haematological malignancies: a Danish cohort study

2020 ◽  
Vol 35 (10) ◽  
pp. 949-960
Author(s):  
Else Toft Würtz ◽  
Johnni Hansen ◽  
Oluf Dimitri Røe ◽  
Øyvind Omland
Keyword(s):  
Cox Regression ◽  
Haematological Malignancy ◽  
Asbestos Exposure ◽  
Production Plant ◽  
Haematological Malignancies ◽  
Asbestos Cement ◽  
Increased Risk ◽  
Reference Cohort

Abstract Environmental asbestos exposure and occupational asbestos exposure increase the risk of several types of cancer, but the role of such exposures for haematological malignancies remains controversial. We aimed to examine the risk of haematological malignancies: first, in subjects exposed early in life, independently of any occupational exposure occurring later; second, in subjects exposed occupationally. We established an environmentally exposed cohort from four schools located near the only former asbestos cement production plant in Denmark. We identified nearly all pupils in the seventh grade and created an age and sex-matched 1:9 reference cohort from the Danish Central Population Register. Participants were born 1940–1970 and followed up in national registers until the end of 2015. Occupational asbestos exposure was assessed for all participants using two different job exposure matrices. The school cohort included 12,111 participants (49.7% girls) and the reference cohort 108,987 participants. Eight subgroups of haematological malignancy were identified in the Danish Cancer Registry. These cases were analysed for combined overall haematological malignancy, a combined subgroup of lymphomas and a combined subgroup of leukaemias. The data were analysed using Cox regression (hazard ratios (HR)) including other cancers and death as competing risks. Haematological malignancy was identified in 1125 participants. The median follow-up was 49.3 years (0.1–63.4). Early environmental asbestos exposure was not associated with an increased risk of haematological malignancy. Long-term occupational asbestos exposure was associated with overall haematological malignancy (HR 1.69, 95% CI 1.04–2.73); in particular for the leukaemia subgroup (HR 2.14, 95% CI 1.19–3.84). This large follow-up study suggests that long-term occupational asbestos exposure is associated with increased leukaemia risk. However, further studies are needed to confirm these observations.

scholarly journals The influence of genetic variability in IL1B and MIR146A on the risk of pleural plaques and malignant mesothelioma

2020 ◽  
Vol 54 (4) ◽  
pp. 429-436
Author(s):  
Petra Piber ◽  
Neza Vavpetic ◽  
Katja Goricar ◽  
Vita Dolzan ◽  
Viljem Kovac ◽  
...  
Keyword(s):  
Genetic Variability ◽  
Malignant Mesothelioma ◽  
Lower Risk ◽  
Asbestos Exposure ◽  
Interleukin 1 ◽  
Multivariable Analysis ◽  
Pleural Plaques ◽  
Increased Risk ◽  
Gender And Age ◽  
Healthy Control

AbstractBackgroundAsbestos exposure is associated with the development of pleural plaques as well as malignant mesothelioma (MM). Asbestos fibres activate macrophages, leading to the release of inflammatory mediators including interleukin 1 beta (IL-1β). The expression of IL-1β may be influenced by genetic variability of IL1B gene or regulatory microRNAs (miRNAs). This study investigated the effect of polymorphisms in IL1B and MIR146A genes on the risk of developing pleural plaques and MM.Subjects and methodsIn total, 394 patients with pleural plaques, 277 patients with MM, and 175 healthy control subjects were genotyped for IL1B and MIR146A polymorphisms. Logistic regression was used in statistical analysis.ResultsWe found no association between MIR146A and IL1B genotypes, and the risk of pleural plaques. MIR146A rs2910164 was significantly associated with a decreased risk of MM (OR = 0.31, 95% CI = 0.13–0.73, p = 0.008). Carriers of two polymorphic alleles had a lower risk of developing MM, even after adjustment for gender and age (OR = 0.34, 95% CI = 0.14–0.85, p = 0.020). Among patients with known asbestos exposure, carriers of at least one polymorphic IL1B rs1143623 allele also had a lower risk of MM in multivariable analysis (OR = 0.50, 95% CI = 0.28–0.92, p = 0.025). The interaction between IL1B rs1143623 and IL1B rs1071676 was significantly associated with an increased risk of MM (p = 0.050).ConclusionsOur findings suggest that genetic variability of inflammatory mediator IL-1β could contribute to the risk of developing MM, but not pleural plaques.

scholarly journals Associations between Metformin and Aspirin Use on Cancer Incidence and Mortality in Older Adults

2021 ◽  
Vol 5 (Supplement_1) ◽  
pp. 614-614
Author(s):  
Suzanne Orchard ◽  
Jonathan Broder ◽  
Jessica Lockery ◽  
Peter Gibbs ◽  
Robyn Woods ◽  
...  
Keyword(s):  
Older Adults ◽  
Cancer Risk ◽  
Cancer Incidence ◽  
Community Dwelling ◽  
Uncontrolled Diabetes ◽  
Increased Risk ◽  
Incidence And Mortality ◽  
Significant Difference ◽  
Risk Of Cancer ◽  
Related Mortality

Abstract Diabetes increases risk of malignancies, and this association increases with age. Metformin may protect against cancer development and progression, but results are mixed and limited to younger cohorts. We examined whether metformin, in the presence or absence of aspirin, reduces incident cancer and cancer-related mortality in older adults. ASPirin in Reducing Events in the Elderly (ASPREE) was a primary prevention trial of daily aspirin vs placebo which enrolled community-dwelling adults from Australia (70+ years) and the US (65+ years for minorities) followed for a median of 4.7 years. Invasive cancer was adjudicated by an expert panel. Cox proportional-hazards models, controlling for age at randomization and known cancer risk factors, were used to analyse the relationship between baseline metformin use, randomized treatment arm, cancer incidence (first in-trial cancer) and mortality. For participants with controlled diabetes, there was a significant reduction in cancer mortality in metformin users compared to nonusers (Adjusted [Adj] HR=0.24, 95%CI=0.07, 0.80), but not for cancer incidence (Adj HR=0.61, 95%CI=0.29, 1.27). For participants with uncontrolled diabetes, there was no significant difference in cancer incidence (Adj HR=0.95, 95%CI=0.66, 1.38) or mortality (Adj HR=1.18, 95%CI=0.62, 2.26) between metformin and non-metformin users. Uncontrolled diabetes, irrespective of metformin use, increased risk of cancer incidence and mortality compared to non-diabetics. Aspirin did not modify the effect of metformin on cancer incidence or mortality. Our findings show that metformin may have protective effects against cancer-related mortality for those older persons whose diabetes is well-controlled, and underscores the importance of diabetes control to minimise cancer risk.

scholarly journals Effect of aspirin on cancer incidence and mortality in older adults

2020 ◽  
Author(s):  
John J McNeil ◽  
Peter Gibbs ◽  
Suzanne G Orchard ◽  
Jessica E Lockery ◽  
Wendy B Bernstein ◽  
...  
Keyword(s):  
Older Adults ◽  
Cancer Incidence ◽  
Controlled Trial ◽  
Community Dwelling ◽  
Tumor Type ◽  
Risk Of Death ◽  
Increased Risk ◽  
Incidence And Mortality ◽  
Significant Difference ◽  
Clinical Records

Abstract Background ASPirin in Reducing Events in the Elderly (ASPREE), a randomized double-blind placebo-controlled trial (RCT) of daily low-dose aspirin (100 mg) in older adults, showed an increase in all-cause mortality, primarily due to cancer. In contrast prior RCTs, mainly involving younger individuals, demonstrated a delayed cancer benefit with aspirin. We now report a detailed analysis of cancer incidence and mortality. Methods 19,114 Australian and U.S. community-dwelling participants aged 70+ years (U.S. minorities 65+ years) without cardiovascular disease, dementia or physical disability were randomized and followed for a median of 4.7 years. Fatal and non-fatal cancer events, a prespecified secondary endpoint, were adjudicated based on clinical records. Results 981 cancer events occurred in the aspirin and 952 in the placebo groups. There was no statistically significant difference between groups for all incident cancers (HR = 1.04, 95% CI = 0.95 to 1.14), hematological cancer (HR = 0.98, 95% CI = 0.73 to 1.30), or all solid cancers (HR = 1.05, 95% CI = 0.95 to 1.15), including by specific tumor type. However, aspirin was associated with an increased risk of incident cancer that had metastasized (HR = 1.19, 95% CI = 1.00 to 1.43) or was stage 4 at diagnosis (HR = 1.22, 95% CI = 1.02 to 1.45), and with higher risk of death for cancers that presented at stages 3 (HR = 2.11, 95% CI = 1.03 to 4.33) or 4 (HR = 1.31, 95% CI = 1.04 to 1.64). Conclusions In older adults, aspirin treatment had an adverse effect on later stages of cancer evolution. These findings suggest that in older persons, aspirin may accelerate the progression of cancer and thus, suggest caution with its use in this age group.

Environmental asbestos exposure in childhood and risk of mesothelioma later in life: a long-term follow-up register-based cohort study

2019 ◽  
Vol 76 (6) ◽  
pp. 407-413 ◽  
Author(s):  
Sofie Bünemann Dalsgaard ◽  
Else Toft Würtz ◽  
Johnni Hansen ◽  
Oluf Dimitri Røe ◽  
Øyvind Omland
Keyword(s):  
Primary Schools ◽  
Cox Regression ◽  
Asbestos Exposure ◽  
Cement Plant ◽  
Asbestos Cement ◽  
Increased Risk ◽  
Prevailing Wind Direction ◽  
Comparison Cohort ◽  
Long Term Follow Up

ObjectiveTo examine the risk of malignant mesothelioma (MM) in former pupils who attended primary school near an asbestos cement plant.MethodsA cohort of 12 111 former pupils, born 1940–1970, was established from individual historical records from four primary schools located at a distance of 100–750 m in the prevailing wind direction from an asbestos cement plant operating from 1928 to 1984 in Aalborg, Denmark. The school cohort and a comparison cohort consisting of 108 987 gender and 5-year frequency-matched subjects were followed up (2015) for MM in the Danish Cancer Registry. Using Cox regression, HRs were estimated for the incidence of MM. Adjustments for occupational and familial asbestos exposure were made with a job exposure matrix. An SIR analysis including latency periods testing the cancer incidence rate was performed with the comparison cohort as the reference rate.ResultsThe median person-years of follow-up were 62.5 years in the school cohort and 62.2 years in the comparison cohort. There were 32 males and 6 females of the former pupils who developed MM during the follow-up: HRmale 7.01 (95% CI 4.24 to 11.57), HRfemale 7.43 (95% CI 2.50 to 22.13). Those who attended school 250 m north of the plant had the highest HR for MM, 10.65 (95% Cl 5.82 to 19.48). No significant trend between school distance and risk of MM was established (p=0.35).ConclusionOur results suggest that boys and girls who attended schools and lived in the neighbourhood of an asbestos cement plant later in life have a significantly increased risk of MM.

Chronic comorbidities in children with type 1 diabetes: a population-based cohort study

2015 ◽  
Vol 100 (8) ◽  
pp. 763-768 ◽  
Author(s):  
Soulmaz Fazeli Farsani ◽  
Patrick C Souverein ◽  
Marja M J van der Vorst ◽  
Catherijne A J Knibbe ◽  
Anthonius de Boer ◽  
...  
Keyword(s):  
Type 1 Diabetes ◽  
Cohort Study ◽  
Hazard Analysis ◽  
Population Based ◽  
Early Years ◽  
Increased Risk ◽  
Significant Difference ◽  
Reference Cohort ◽  
Chronic Comorbidities

ObjectiveTo determine the incidence of chronic comorbidities among children with type 1 diabetes (T1D) and to compare incidences with a group of children without diabetes.DesignPopulation-based cohort study.SettingDutch PHARMO database (1998–2010).PatientsAll patients (<19 years old) with T1D between 1999 and 2009 (T1D cohort) and a group of age- and sex-matched (ratio: 1–4) children without diabetes (reference cohort).Main outcome measureThe incidence of nine common chronic comorbidities was assessed on the basis that they were treated pharmacologically and/or resulted in hospital admission. Cox proportional hazard analysis was used to estimate the strength of the association between T1D and comorbidities, expressed as HRs and 95% CIs.ResultsA total of 915 patients with T1D and 3590 children in the reference cohort (51% boys, mean age of 10.1 (SD 4.5) years) were included. T1D was associated with an increased risk (HR; 95% CI) of hospitalisation for any comorbidity (3.7; 2.5 to 5.5), thyroid disease (14.2; 6.7 to 31.0), non-infectious enteritis and colitis (5.9; 3.0 to 11.5), cardiovascular disorders (3.1; 2.3 to 4.2), mental disorders (2.0; 1.4 to 3.1), epilepsy (2.0; 1.1 to 3.7) and (obstructive) pulmonary disease (1.5; 1.2 to 2.0). There was no significant difference in the incidences of other comorbidities (malignant disorders, anaemia and migraine) between the two cohorts.ConclusionsOur longitudinal study showed that incidences of six chronic diseases were significantly higher in T1D children during the early years of developing this disease compared with the reference children.

Cancer incidence among merchant seafarers: an extended follow-up of a Danish cohort

2018 ◽  
Vol 75 (8) ◽  
pp. 582-585 ◽  
Author(s):  
Kajsa Ugelvig Petersen ◽  
Julie Volk ◽  
Linda Kaerlev ◽  
Henrik Lyngbeck Hansen ◽  
Johnni Hansen
Keyword(s):  
Asbestos Exposure ◽  
Personal Identification ◽  
Registration System ◽  
Vital Status ◽  
Male And Female ◽  
Civil Registration ◽  
Increased Risk ◽  
Danish Civil Registration System ◽  
Danish Cancer Registry

ObjectivesWhile maritime safety generally has improved dramatically over the last century, modern seafarers are still faced with numerous occupational hazards potentially affecting their risk of chronic diseases such as cancer. The aim of this study is to offer updated information on the incidence of specific cancers among both male and female seafarers.MethodsUsing records from the Danish Seafarer Registry, all seafarers employed on Danish ships during 1986–1999 were identified, resulting in a cohort of 33 084 men and 11 209 women. Information on vital status and cancer was linked to each member of the cohort from the Danish Civil Registration System and the Danish Cancer Registry using the unique Danish personal identification number. SIRs were estimated for specific cancers using national rates.ResultsThe overall incidence of cancer was increased for both male and female seafarers (SIR 1.19, 95% CI 1.15 to 1.23, and SIR 1.14, 95% CI 1.07 to 1.22) compared with the general population. This excess was primarily driven by increases in gastrointestinal, respiratory and genitourinary cancers. In addition, male seafarers working in areas with asbestos exposure showed significantly increased risk of mesothelioma. Finally, the male seafarers had an increased risk of lip cancer.ConclusionsThe majority of cancers among seafarers continue to be lifestyle-related. However, occupational exposure to asbestos and ultraviolet radiation seems to affect the cancer pattern among the male seafarers as well.

Risk of venous thromboembolism following surgical treatment of superficial venous incompetence

VASA ◽  
2017 ◽  
Vol 46 (6) ◽  
pp. 484-489 ◽  
Author(s):  
Tom Barker ◽  
Felicity Evison ◽  
Ruth Benson ◽  
Alok Tiwari
Keyword(s):  
Venous Thromboembolism ◽  
Varicose Vein ◽  
Lower Incidence ◽  
Varicose Veins ◽  
Secondary Data ◽  
Foam Sclerotherapy ◽  
Increased Risk ◽  
Significant Difference ◽  
Chi Squared ◽  
One Year

Abstract. Background: The invasive management of varicose veins has a known risk of post-operative deep venous thrombosis and subsequent pulmonary embolism. The aim of this study was to evaluate absolute and relative risk of venous thromboembolism (VTE) following commonly used varicose vein procedures. Patients and methods: A retrospective analysis of secondary data using Hospital Episode Statistics database was performed for all varicose vein procedures performed between 2003 and 2013 and all readmissions for VTE in the same patients within 30 days, 90 days, and one year. Comparison of the incidence of VTEs between procedures was performed using a Pearson’s Chi-squared test. Results: In total, 261,169 varicose vein procedures were performed during the period studied. There were 686 VTEs recorded at 30 days (0.26 % incidence), 884 at 90 days (0.34 % incidence), and 1,246 at one year (0.48 % incidence). The VTE incidence for different procedures was between 0.15–0.35 % at 30 days, 0.26–0.50 % at 90 days, and 0.46–0.58 % at one year. At 30 days there was a significantly lower incidence of VTEs for foam sclerotherapy compared to other procedures (p = 0.01). There was no difference in VTE incidence between procedures at 90 days (p = 0.13) or one year (p = 0.16). Conclusions: Patients undergoing varicose vein procedures have a small but appreciable increased risk of VTE compared to the general population, with the effect persisting at one year. Foam sclerotherapy had a lower incidence of VTE compared to other procedures at 30 days, but this effect did not persist at 90 days or at one year. There was no other significant difference in the incidence of VTE between open, endovenous, and foam sclerotherapy treatments.

Interpersonal Violence and Substance Use Among Female Sexual Minorities

2019 ◽  
Author(s):  
Cort M. Dorn-Medeiros ◽  
Cass Dykeman ◽  
Timothy Bergquist
Keyword(s):  
New York ◽  
Tobacco Use ◽  
Interpersonal Violence ◽  
Sexual Minorities ◽  
Sample Population ◽  
Life Outcomes ◽  
City Community ◽  
Increased Risk ◽  
Significant Difference ◽  
Community Health Survey

This archived data study used results from the New York City Community Health Survey to explore the relationship between interpersonal violence among female sexual minorities (FSM) and their levels of alcohol and tobacco use. A total of 92 FSM were included in the sample population. There was a significant difference in the mean number of alcoholic drinks consumed between FSM who reported past experience of interpersonal violence and those who did not. No difference was found in levels of tobacco use between FSM who reported interpersonal violence and those who did not. Results of the present study support current research indicating FSM may be at increased risk for elevated alcohol use and respective negative life outcomes related to the experience of interpersonal violence.

Association between hTERT Polymorphisms and Female Papillary Thyroid Carcinoma

2019 ◽  
Vol 14 (3) ◽  
pp. 268-279
Author(s):  
Ying Liu ◽  
Zhi Li ◽  
Xinyue Tang ◽  
Min Li ◽  
Feng Shi
Keyword(s):  
Papillary Thyroid Carcinoma ◽  
Thyroid Carcinoma ◽  
Genome Wide Association Study ◽  
Papillary Thyroid ◽  
Clinicopathologic Characteristics ◽  
Female Population ◽  
Genome Wide ◽  
Increased Risk ◽  
Significant Difference ◽  
Thyroid Cancer Risk

Background: A previous genome-wide association study showed that hTERT rs10069690 and rs2736100 polymorphisms were associated with thyroid cancer risk. Objective: This study further investigated the association between increased risk and clinicopathologic characteristics for Papillary Thyroid Carcinoma (PTC) and hTERT polymorphisms rs10069690 or rs2736100 in a Chinese female population. Methods: The hTERT genotypes of 276 PTC patients and 345 healthy subjects were determined with regard to SNPs rs10069690 and rs2736100. The association between these SNPs and the risk of PTC and clinicopathologic characteristics was investigated by logistic regression. Results: We found a significant difference between PTC and rs10069690 (Odds Ratio (OR) = 1.515; P = 0.005), but not between PTC and rs2736100. When the analysis was limited to females, rs10069690 and rs2736100 were both associated with increased risk for PTC in female individuals (OR = 1.647, P = 0.007; OR = 1.339, P = 0.041, respectively). Further haplotype analysis revealed a stimulative effect of haplotypes TC and CA of TERT rs10069690-rs2736100, which increased risk for PTC in female individuals (OR = 1.579, P = 0.014; OR = 0.726, P = 0.025, respectively). Furthermore, the heterozygote A/C of rs2736100 showed significant difference for age (OR = 0.514, P = 0.047). Conclusion: Our finding suggests that hTERT polymorphisms rs10069690 and rs2736100 are associated with increased risk for PTC in Chinese female population and rs2736100 may be related to age. Consistent with US20170360914 and US20170232075, they are expected to be a potential molecular target for anti-cancer therapy.

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