Institute of Hygiene and Epidemiology

Prague, Czech Republic

Institute of Hygiene and Epidemiology

Prague, Czech Republic
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Chuang S.-C.,Imperial College London | Chuang S.-C.,International Agency for Research on Cancer IARC | Jenab M.,International Agency for Research on Cancer IARC | Heck J.E.,University of California at Los Angeles | And 61 more authors.
Cancer Causes and Control | Year: 2012

We investigated the association between diet and head and neck cancer (HNC) risk using data from the International Head and Neck Cancer Epidemiology (INHANCE) consortium. The INHANCE pooled data included 22 case-control studies with 14,520 cases and 22,737 controls. Center-specific quartiles among the controls were used for food groups, and frequencies per week were used for single food items. A dietary pattern score combining high fruit and vegetable intake and low red meat intake was created. Odds ratios (OR) and 95% confidence intervals (CI) for the dietary items on the risk of HNC were estimated with a two-stage random-effects logistic regression model. An inverse association was observed for higher-frequency intake of fruit (4th vs. 1st quartile OR = 0.52, 95% CI = 0.43-0.62, p trend < 0.01) and vegetables (OR = 0.66, 95% CI = 0.49-0.90, p trend = 0.01). Intake of red meat (OR = 1.40, 95% CI = 1.13-1.74, p trend = 0.13) and processed meat (OR = 1.37, 95% CI = 1.14-1.65, p trend < 0.01) was positively associated with HNC risk. Higher dietary pattern scores, reflecting high fruit/vegetable and low red meat intake, were associated with reduced HNC risk (per score increment OR = 0.90, 95% CI = 0.84-0.97). © 2011 Springer Science+Business Media B.V.

PubMed | University of Newcastle, Regional Authority of Public Health, Brown University, New York University and 42 more.
Type: Journal Article | Journal: International journal of epidemiology | Year: 2016

Cigarette smoking is a major risk factor for head and neck cancer (HNC). To our knowledge, low cigarette smoking (<10 cigarettes per day) has not been extensively investigated in fine categories or among never alcohol drinkers.We conducted a pooled analysis of individual participant data from 23 independent case-control studies including 19660 HNC cases and 25566 controls. After exclusion of subjects using other tobacco products including cigars, pipes, snuffed or chewed tobacco and straw cigarettes (tobacco product used in Brazil), as well as subjects smoking more than 10 cigarettes per day, 4093 HNC cases and 13416 controls were included in the analysis. The lifetime average frequency of cigarette consumption was categorized as follows: never cigarette users, >0-3, >3-5, >5-10 cigarettes per day.Smoking >0-3 cigarettes per day was associated with a 50% increased risk of HNC in the study population [odds ratio (OR)=1.52, 95% confidence interval (CI): (1.21, 1.90). Smoking >3-5 cigarettes per day was associated in each subgroup from OR=2.01 (95% CI: 1.22, 3.31) among never alcohol drinkers to OR=2.74 (95% CI: 2.01, 3.74) among women and in each cancer site, particularly laryngeal cancer (OR=3.48, 95% CI: 2.40, 5.05). However, the observed increased risk of HNC for low smoking frequency was not found among smokers with smoking duration shorter than 20 years.Our results suggest a public health message that low frequency of cigarette consumption contributes to the development of HNC. However, smoking duration seems to play at least an equal or a stronger role in the development of HNC.

Consonni D.,Epidemiology Unit | Pesatori A.C.,Epidemiology Unit | Bertazzi P.A.,Epidemiology Unit | Olsson A.C.,International Agency for Research on CancerLyon France | And 42 more authors.
International Journal of Cancer | Year: 2014

Bricklayers may be exposed to several lung carcinogens, including crystalline silica and asbestos. Previous studies that analyzed lung cancer risk among these workers had several study design limitations. We examined lung cancer risk among bricklayers within SYNERGY, a large international pooled analysis of case-control studies on lung cancer and the joint effects of occupational carcinogens. For men ever employed as bricklayers we estimated odds ratios (OR) and 95% confidence intervals (CI) adjusted for study center, age, lifetime smoking history and employment in occupations with exposures to known or suspected lung carcinogens. Among 15,608 cases and 18,531 controls, there were 695 cases and 469 controls who had ever worked as bricklayers (OR: 1.47; 95% CI: 1.28-1.68). In studies using population controls the OR was 1.55 (95% CI: 1.32-1.81, 540/349 cases/controls), while it was 1.24 (95% CI: 0.93-1.64, 155/120 cases/controls) in hospital-based studies. There was a clear positive trend with length of employment (p<0.001). The relative risk was higher for squamous (OR: 1.68, 95% CI: 1.42-1.98, 309 cases) and small cell carcinomas (OR: 1.78, 95% CI: 1.44-2.20, 140 cases), than for adenocarcinoma (OR: 1.17, 95% CI: 0.95-1.43, 150 cases) (p-homogeneity: 0.0007). ORs were still elevated after additional adjustment for education and in analyses using blue collar workers as referents. This study provided robust evidence of increased lung cancer risk in bricklayers. Although non-causal explanations cannot be completely ruled out, the association is plausible in view of the potential for exposure to several carcinogens, notably crystalline silica and to a lesser extent asbestos. © 2014 UICC.

Zabrocka L.,Institute of Hygiene and Epidemiology | Langer K.,ckiewicz University In Poznan | Michalski A.,Institute of Hygiene and Epidemiology | Kocik J.,Military Institute of Hygiene and Epidemiology | Langer J.J.,ckiewicz University In Poznan
Lab on a Chip - Miniaturisation for Chemistry and Biology | Year: 2014

A microfluidic device for studies on the germination of bacterial spores (e.g. Bacillus subtilis) based on non-specific interactions on the nanoscale is presented. A decrease in the population of spores during germination followed by the appearance of transition forms and an increase in the number of vegetative cells can be registered directly and simultaneously by using the microfluidic device, which is equipped with a conductive polymer layer (polyaniline) in the form of a nano-network. The lab-on-a-chip-type device, operating in a continuous flow regime, allows monitoring of germination of bacterial spores and analysis of the process in detail. The procedure is fast and accurate enough for quantitative real-time monitoring of the main steps of germination, including final transformation of the spores into vegetative cells. All of this is done without the use of biomarkers or any bio-specific materials, such as enzymes, antibodies and aptamers, and is simply based on an analysis of physicochemical interactions on the nanoscale level. This journal is © The Royal Society of Chemistry 2015.

Zmeskal M.,Regional Hospital Kolin | Kralikova E.,Institute of Hygiene and Epidemiology | Kurcova I.,Charles University | Pafko P.,Charles University | And 4 more authors.
Zdravstveno Varstvo | Year: 2016

Smoking is associated with a higher incidence of post-lung transplantation complications and mortality. Prior to inclusion on the lung transplant waiting list in the Czech Republic, patients are supposed to be tobacco free for at least 6 months. Our aim was to determine the prevalence of smoking, validated by urinary cotinine, among patients post lung transplantation and prior to inclusion on the transplant waiting list. Methods. Between 2009 and 2012, we conducted a cross-sectional survey of urinary cotinine to assess tobacco exposure in 203 patients in the Lung Transplant Program in the Czech Republic. We measured urinary cotinine in 163 patients prior to inclusion on the transplantation waiting list, and 53 patients post bilateral lung transplantation. Results.15.1% (95% CI 0.078 to 0.269) of all lung transplant recipients had urinary cotinine levels corresponding to active smoking; and a further 3.8% (95% CI 0.007 to 0.116) had borderline results. Compared to patients with other diagnoses, patients with COPD were 35 times more likely to resume smoking post-transplantation (95% CI 1.92 to 637.37, p-value 0.016). All patients who tested positive for urinary cotinine levels were offered smoking cessation support. Only one Tx patient sought treatment for tobacco dependence, but was unsuccessful. Conclusion. Smoking resumption may be an underrecognized risk for lung transplantation recipients, particularly among patients with chronic obstructive pulmonary disease. More rigorous screening, as well as support and treatment to stop smoking among these patients are needed. © 2016 National Institute of Public Health, Slovenia.

Andreotti G.,U.S. National Institutes of Health | Boffetta P.,International Agency for Research on Cancer | Rosenberg P.S.,U.S. National Institutes of Health | Berndt S.I.,U.S. National Institutes of Health | And 16 more authors.
Carcinogenesis | Year: 2010

Hypertension is a known risk factor for renal cell carcinoma (RCC), although the underlying biological mechanisms of its action are unknown. To clarify the role of hypertension in RCC, we examined the risk of RCC in relation to 142 single-nucleotide polymorphisms (SNPs) in eight genes having a role in blood pressure control.We analyzed 777 incident and histologically confirmed RCC cases and 1035 controls who completed an in-person interview as part of a multi-center, hospital-based case-control study in Central Europe. Genotyping was conducted with an Illumina® GoldenGate® Oligo Pool All assay using germ line DNA. Of the eight genes examined, AGT (angiotensinogen) was most strongly associated with RCC (minimum P-value permutation test 5 0.02). Of the 17 AGT tagging SNPs considered, associations were strongest for rs1326889 [odds ratio (OR) 5 1.35, 95% confidence interval (CI) 5 1.15-1.58] and rs2493137 (OR 5 1.31, 95% CI 5 1.12-1.54), which are located in the promoter. Stratified analysis revealed that the effects of the AGT SNPs were statistically significant in participants with hypertension or high body mass index (BMI) (≥25 kg/m2), but not in subjects without hypertension and with a normal BMI (<25 kg/m2). Also, haplotypes with riskconferring alleles of markers located in the promoter and intron 1 regions of AGT were significantly associated with RCC compared with the common haplotype in subjects with hypertension or high BMI (global P 5 0.003). Our findings suggest that common genetic variants of AGT, particularly those in the promoter, increase RCC risk among subjects who are hypertensive or overweight. Published by Oxford University Press 2010.

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