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The relationship between peripheral blood mononuclear cells telomere length and diet - unexpected effect of red meat
Nutrition Journal volume 15, Article number: 68 (2015)
Repeated nucleotide sequences combined with proteins called telomeres cover chromosome ends and dictate cells lifespan. Many factors can modify telomere length, among them are: nutrition and smoking habits, physical activities and socioeconomic status measured by education level.
The aim of the study was to determine the influence of above mentioned factors on peripheral blood mononuclear cells telomere length.
Study included 28 subjects (seven male and 21 female, age 18–65 years.), smokers and non-smokers without any serious health problems in past and present. Following a basic medical examination, patients completed the food frequency questionnaire with 17 foods and beverages most common groups and gave blood for testing. PBMC telomere length were measured with qualitative real-time Polymerase Chain Reaction (rtPCR) method and expressed as a T/S ratio.
Among nine food types (cereal, fruits, vegetables, diary, red meat, poultry, fish, sweets and salty snacks) and eight beverages (juices, coffee, tea, mineral water, alcoholic- and sweetened carbonated beverages) only intake of red meat was related to T/S ratio. Individuals with increased consumption of red meat have had higher T/S ratio and the strongest significant differences were observed between consumer groups: “never” and “1–2 daily” (p = 0.02). Smoking habits, physical activity, LDL and HDL concentrations, and education level were not related to telomere length, directly or as a covariates.
Unexpected correlation of telomere length with the frequency of consumption of red meat indicates the need for further in-depth research and may undermine some accepted concepts of adverse effects of this diet on the health status and life longevity.
Telomeres are special structures consisting of repeating DNA chain sequences (TTAGGG) and a complex of few proteins. They are located at the ends of chromosomes and play a role in covering the cell genome and controlling number of cell divisions. Thus, affect cell lifespan. When shortening of telomeres during cell division reaches a critical length, cellular senescence is triggered. Since cellular longevity is affected by telomere length, individuals with longer telomeres should expect higher life expectancy. Very short telomere lengths may activate different repair mechanisms e.g. unlock telomerase – enzyme that can rebuild telomere sequences or ALT (Alternative Lengthening of Telomeres), which can lead to cell immortalization and tumor growth.
Numerous factors can affect shortening and rebuilding of telomeres [1–4], but previous studies did not yield a clear answer to the question what is a relationship between telomere length and some disorders [5, 6] or life expectancy [7, 8].
Diet is a common variable that can have significant impact on human health. Compliance with dietary pyramid is required for maintaining wellbeing. At the top of the pyramid is red meat, which should be eaten with moderation, preferably two or three times a week. Red meat is a good source of high amounts of protein and vitamins, especially B1, B12, PP and easily assimilable iron. Excessive consumption of red meat is accompanied by an increased ingestion of dietary fat with low level of polyunsaturated fatty acids (PUFA), and toxic substances formed during thermal treatment of meat. It may also affect the serum lipid profile while raising LDL concentration – which is widely recognized as a risk factor for cardiovascular diseases . Several studies have shown that high red meat consumption can increase the incidence of colorectal and breast cancer [10–14], and DNA damage. Greater intake of red meat can induce DNA damage and may have an impact on the “Telomere Length” (TL). Main sources of DNA damage are oxidative stress  and inflammation. Heme iron from meat can cause DNA damage in vitro through lipid peroxidation products . Increased intake of saturated fatty acids (SFA) may induce oxidative stress and thus enhance DNA-damage [17, 18].
The aim of this 3-year prospective observational study was to determine the effect of diet, smoking habit, physical activity and education on telomere length of peripheral blood mononuclear cells (PBMC). Results of a cross-sectional analysis of baseline data are presented.
Materials and methods
The study included 28 individuals, (21 females and seven males). A detailed description of the study population is presented in Table 1. Inclusion criteria were: age 18–65 years, smoking habit: never smoker and current smoker, no significant abnormalities on physical examination, signed informed consent form to participate in the study. Exclusion criteria: previous or ongoing major diseases including proliferative diseases and mental health disorders, pregnancy (excluded by pregnancy urine test), running disease during the follow-up to severe or poor prognosis.
Patients enrolled to the study, after a routine physical examination, were asked to fill out a questionnaire. This questionnaire was especially developed by the authors for the study. To simplify the filling, questions with different answers (checkbox) were used. The questionnaire consisted of three parts concerning: nutrition habits, food and beverages types and physical activity. It was filled out offhand during a visit, in the presence of a physician or nurse, for additional help. After completing the survey, anthropometric measurements were conducted and detailed information about smoking habit was obtained from smokers. Previous laboratory test results (up to 12 months before enrollment) were obtained from patients’ medical records. At the end of the visit, blood was collected to determine telomere length.
Telomere length was assessed as a relative average telomere length (T/S ratio) by PCR according to the method described by Cawthon R.M . Firstly, 9 mL of venous blood was collected into EDTA tubes. Peripheral blood mononuclear cells (PBMC) were isolated from human peripheral blood by density gradient centrifugation using Histopaque® 1077 solution (Sigma Aldrich, Saint Louis, MO) according to the manufacturer’s recommendations. Afterwards, the PBMCs were washed three times in PBS and stored at −80 °C until further analysis. DNA was isolated from PBMC using QIAamp DNA Blood Mini Kit (Qiagen) according to the manufacturer's protocol. The concentration and quality of DNA obtained were assessed by spectrophotometry (Picodrop). After collecting enough samples telomere length was assessed by quantitive real-time PCR.
The primer sequences for the amplification reaction in order to determine the length of telomeres:
The primer sequences for the amplification of the reference gene 36B4
The reaction was carried out in triplicate. In order to perform a standard curve, dilution series of DNA were prepared (concentration range from 0.6 ng/μL to 5 ng/μL). The real-time PCR was on a 7900 HT Fast Real-Time PCR System (Applied Biosystems).
Precise reaction conditions for PCR (primer concentration, reaction time and temperature) were determined empirically. The specificity of the PCR reaction was checked based on melting curves, obtained at the end of each PCR.
All data are presented as mean ± standard deviation or median and range. Differences between groups with normal distribution were calculated with t-test, ANOVA and adequate post-hoc tests. Survey data not normally distributed were assessed with nonparametric tests. ANCOVA models were used to adjust potential preexisting differences e.g. the effect of age or smoking habit on telomere length. All analyses were performed using the STATISTICA (data analysis software system), version 12. StatSoft, Inc. (2014) http://www.statsoft.com.
Results of analysis of diet survey are shown in Table 2. This survey has been limited to provide eating times of a specific food per unit of time (day or week) due to the difficulty in determining the accurate food portion size. It was assumed that subjects have eaten average portion size. Available food frequency questionnaire (FFQ) proved to be too long and complicated. The survey was constructed in a comprehensible form, easy to be filled-up by all subjects and assess the average intake of groups of products (food and drinks) on a basis of daily nutrition. The survey used quantitative research methods to identify 6 “frequency consumption groups”:
once weekly or less,
once daily in 2–3 days of week,
once daily in 4–6 days of week,
1–2x daily (at least one meal),
3–5x daily (every meal),
We found no association between telomere length and the number of meals eaten per day. Eating breakfast - important for the proper diet - turned out to be irrelevant to telomeres. Neither the beginning nor the end of the daily diet had any effect on telomeres though shown its impact on external appearance. After analysis of obtained data it was found that only red meat consumption was associated with the relative length of telomeres (T/S ratio) (Table 2).
The detailed relationship between consumption groups is shown in Fig. 1. Post-hoc analysis (HSD test) showed significant difference between group F0 and F3 (# p < 0.05). ANCOVA model indicated, that there was no significant interaction between age as covariate and red meat consumption and after correction of means, value F = 4.62 was still significant (p = 0.0078). Similarly, no effect on HDL and LDL cholesterol levels were found (F = 4.24, p = 0.010, F = 3.98, p = 0.014, respectively). The study could not confirm any relationship between types and quantities of beverages or other food groups and the length of PBMC telomeres, although other authors found such associations .
Age, anthropometric data (BMI, WHR) and cholesterol levels (LDL, HDL) did not correlate with T/S ratio.
The additional aim of this study was to determine the influence of cigarette smoking on telomere length, but there was no difference between active smokers and non-smokers. In the group of smokers, daily and total burden of cigarette smoking were not correlated with T/S ratio and red meat consumption.
Physical activity, a necessary element of a healthy lifestyle was not related to telomere status. Study conditions exceed the possibilities of using more objective but time- and cost-intensive methods for determining the level of physical activity. Survey data allowed to divide participants into five groups of physical activity depending on the frequency and time of physical activity:
None - total lack or medical contraindications for exercise
Low - till 30 min/week
Moderate - above 30 min/week, but less than 4x a week
Increased - above 30 min/week and at least 4x a week
Intensive - practicing an amateur sport with regular training
We found no differences among particular levels and T/S ratio.
Four levels of education were identified among participants (Table 1). Participants were divided into two groups – with and without higher education. PBMC telomere length T/S ratio between these groups did not differ significantly (p = 0.26) (Table 3).
This study established a relationship between the relative length of telomeres in peripheral blood mononuclear cells and the frequency of eating red meat. This finding differs from those published by Lee YJ et al.  on the impact of dietary patterns on telomere length. This study showed that diet rich with red meat can decrease leucocyte telomere length 10 years after receiving diet data. Our participants had had blood samples collected just after filling out food frequency questionnaire. Hence we analyzed the relationship without any time shift. Our study population was a little younger (18–65 vs. 40–69 at baseline) and eating habits differ between Poland and Korea. Similarly to Lee YJ et al., a relationship was observed in colonocytes of patients who consume higher amounts of red meat  but not in those who ate white meat. As mentioned in the introduction, substances that enter the body along with red meat (lipids, heme iron, N-nitroso compounds) can damage the genetic material. This process is well researched in cells directly related to the digestion of red meat products, in terms particularly of carcinogenesis [23–25] can damage the genetic material. Cooking, frying and especially grilling generates substances with mutagenic activity: heterocyclic amines (HCA), polycyclic aromatic hydrocarbons (PAH), lipid peroxides, wherein the amount is dependent on the temperature of meat processing . Increased consumption of processed meat correlates positively with the likelihood of breast cancer [27, 28] and negatively with leucocyte telomere length . Telomere sequences may also be the site of DNA damage . However, some lipid peroxidation products can reduce the risk of carcinogenesis . Carnosine, a dipeptide found in red meat may have a protective effect on telomeres . There is also a published study indicating the negative influence of diet devoid of meat on health status, especially increased incidence of cancer and mental health disorders . This finding can support the concept of positive effects of red meat on health and is also consistent with the results of our study. The positive relationship between diet rich in red meat and the occurrence of tumors of distant organs from the digestive tract may be due to activity of red meat derivatives in the whole body. Peripheral blood mononuclear cells seem to be a good material for the analysis of the impact of red meat derivatives on the body. They are easy to isolate and count. They circulate all over the body and are exposed to the nutrient. Analysis of genetic material derived from these cells allows detection of factors that can influence changes in the genome of other tissues .
Our study on a small group of people managed to demonstrate the relationship between the frequency of consumption of red meat and telomere length. Although no attempt was made to estimate the amount of food products. Some studies indicate the risk of underestimating the amount of food products when using the food frequency questionnaires . Micronutrients (e.g. vitamins) can be related to telomere biology, although there are large discrepancies in publications [35–39]. Our study included healthy subjects without symptoms of vitamin deficiency and who were not taking vitamin supplement. At baseline we did not measure micronutrient levels, assuming that there will not be any differences between physiological values in healthy subjects.
Age-related telomere shortening also occurs in PBMC, but there is a large variation in individual - reduction, stabilization and even increase in length  and it is still not fully explained . Intake of food rich in small-to-medium-chain saturated fatty acids (SMSFA: milk, butter, cheese) may be associated with PBMC telomere length – inversely relative . In our study we did not find such a relation (dairy products p = 0.81). Small amounts of SMSFA contained in the meat or used for its preparation (e.g. frying with use of butter) can be one of the TL-modifying factors mentioned above. Although high levels of LDL and HDL concentrations are associated with increased risk of cardiovascular diseases, we did not find any association between these parameters and telomere length. Similar findings were noted in other publications .
The study did not confirm negative effect of smoking on telomere length. This finding is probably associated with insufficient sample size. Statistical analysis also excluded the effects of smoking as a covariate modifying the TL among red meat consumers. The observation study continues and we expect changes after its completion.
Physical activity of participants did not correlate with telomere length. Two study participants with the highest physical activity had longer telomere length than others, but this difference could not be included in statistical calculations. This may suggest that only intense physical effort as opposed to mild or moderate may modify the biology of telomeres [44, 45]. Body mass index (BMI) can be associated with telomere length and there are studies in large groups of people defining the rate of TL change per BMI unit [46, 47]. We did not find any anthropometric associations – straight or reverse. Adjusting data with BMI or WHR as continuous factors did not significantly change red meat diet impact on PBMC telomere length.
Many studies indicate the relationship between TL and education level [48–50]. Less educated people are on lower incomes, often consume poor-quality foods (stale or processed)  containing harmful substances, which damage the genetic material. Our participants did not differ in TL among education levels, mentioned studies were based on the analysis of large populations where identifying weak dependence is easier and effect of covariates is smaller. Additionally - in contrast to our study - tests were performed among groups of people with similar age.
In conclusion, our study findings are at the baseline of further observations of TL changes in response to food and behavior factors. Although we found a relatively strong relationship, it should be treated as a guide for further research on a larger group of people.
ALT, Alternative Lengthening of Telomeres; ANCOVA, analysis of covariance; ANOVA, analysis of variance; BMI, Body Mass Index; CI, coefficient interval; EDTA, ethylenediaminetetraacetic acid; FFQ, food frequency questionnaire; HCA, heterocyclic amines; HDL, high-density lipoprotein; HSD, honest significant difference; LDL, low-density lipoprotein; PAH, polycyclic aromatic hydrocarbons; PBMC, peripheral blood mononuclear cells; PUFA, polyunsaturated fatty acids; rtPCR, quantitive real-time polymerase chain reaction; SD, standard deviation; SFA, saturated fatty acids; SMSFA, small-to-medium-chain saturated fatty acids; T/S, telomere to single (copy gene); TL, telomere length; WHR, Waist-Hip Ratio
Starkweather AR, Alhaeeri AA, Montpetit A, Brumelle J, Filler K, Montpetit M, Mohanraj L, Lyon DE, Jackson-Cook CK. An integrative review of factors associated with telomere length and implications for biobehavioral research. Nurs Res. 2014;63:36–50.
von Zglinicki T. Oxidative stress shortens telomeres. Trends Biochem Sci. 2002;27:339–44.
Huzen J, Wong LSM, van Veldhuisen DJ, Samani NJ, Zwinderman AH, Codd V, Cawthon RM, Benus GFJD, van der Horst ICC, Navis G, Bakker SJL, Gansevoort RT, de Jong PE, Hillege HL, van Gilst WH, de Boer RA, van der Harst P. Telomere length loss due to smoking and metabolic traits. J Intern Med. 2014;275:155–63.
Bailey SM, Brenneman MA, Goodwin EH. Frequent recombination in telomeric DNA may extend the proliferative life of telomerase-negative cells. Nucleic Acids Res. 2004;32:3743–51.
Liu M, Huo YR, Wang J, Wang C, Liu S, Liu S, Wang J, Ji Y. Telomere shortening in Alzheimer's disease patients. Ann Clin Lab Sci. 2016;46:260–5.
Zhu X, Han W, Xue W, Zou Y, Xie C, Du J, Jin G. The association between telomere length and cancer risk in population studies. Sci Rep. 2016;6:22243.
Boonekamp JJ, Simons MJP, Hemerik L, Verhulst S. Telomere length behaves as biomarker of somatic redundancy rather than biological age. Aging Cell. 2013;12:330–2.
Bischoff C, Petersen HC, Graakjaer J, Andersen-Ranberg K, Vaupel JW, Bohr VA, Kolvraa S, Christensen K. No association between telomere length and survival among the elderly and oldest old. Epidemiology (Cambridge, Mass). 2006;17:190–4.
Fornes NS, Martins IS, Hernan M, Velasquez-Melendez G, Ascherio A. Frequency of food consumption and lipoprotein serum levels in the population of an urban area. Brazil, Revista de saude publica. 2000;34:380–7.
Chun YJ, Sohn S-K, Song HK, Lee SM, Youn YH, Lee S, Park H. Associations of colorectal cancer incidence with nutrient and food group intakes in korean adults: a case–control study. Clin Nutr Res. 2015;4:110–23.
Bishop KS, Erdrich S, Karunasinghe N, Han DY, Zhu S, Jesuthasan A, Ferguson LR. An investigation into the association between DNA damage and dietary fatty acid in men with prostate cancer. Nutrients. 2015;7:405–22.
Guo J, Wei W, Zhan L. Red and processed meat intake and risk of breast cancer: a meta-analysis of prospective studies. Breast Cancer Res Treat. 2015;151:191–8.
Ferrucci LM, Sinha R, Graubard BI, Mayne ST, Ma X, Schatzkin A, Schoenfeld PS, Cash BD, Flood A, Cross AJ. Dietary meat intake in relation to colorectal adenoma in asymptomatic women. Am J Gastroenterol. 2009;104:1231–40.
Wie G-A, Cho Y-A, Kang H-h, Ryu K-A, Yoo M-K, Kim Y-A, Jung K-W, Kim J, Lee J-H, Joung H. Red meat consumption is associated with an increased overall cancer risk: a prospective cohort study in Korea. Br J Nutr. 2014;112:238–47.
Sun L, Tan R, Xu J, LaFace J, Gao Y, Xiao Y, Attar M, Neumann C, Li G-M, Su B, Liu Y, Nakajima S, Levine AS, Lan L. Targeted DNA damage at individual telomeres disrupts their integrity and triggers cell death. Nucleic Acids Res. 2015;43:6334–47.
Bastide NM, Chenni F, Audebert M, Santarelli RL, Taché S, Naud N, Baradat M, Jouanin I, Surya R, Hobbs DA, Kuhnle GG, Raymond-Letron I, Gueraud F, Corpet DE, Pierre, Fabrice HF. A central role for heme iron in colon carcinogenesis associated with red meat intake. Cancer Res. 2015;75:870–9.
Gutierrez-Mariscal FM, Perez-Martinez P, Delgado-Lista J, Yubero-Serrano EM, Camargo A, Delgado-Casado N, Cruz-Teno C, Santos-Gonzalez M, Rodriguez-Cantalejo F, Castaño JP, Villalba-Montoro JM, Fuentes F, Perez-Jimenez F, Lopez-Miranda J. Mediterranean diet supplemented with coenzyme Q10 induces postprandial changes in p53 in response to oxidative DNA damage in elderly subjects. Age (Dordr). 2012;34:389–403.
Meza-Miranda ER, Camargo A, Rangel-Zuñiga OA, Delgado-Lista J, Garcia-Rios A, Perez-Martinez P, Tasset-Cuevas I, Tunez I, Tinahones FJ, Perez-Jimenez F, Lopez-Miranda J. Postprandial oxidative stress is modulated by dietary fat in adipose tissue from elderly people. Age (Dordr). 2014;36:507–17.
Cawthon RM. Telomere measurement by quantitative PCR. Nucleic Acids Res. 2002;30, e47.
Marcon F, Siniscalchi E, Crebelli R, Saieva C, Sera F, Fortini P, Simonelli V, Palli D. Diet-related telomere shortening and chromosome stability. Mutagenesis. 2012;27:49–57.
Lee J-Y, Jun N-R, Yoon D, Shin C, Baik I. Association between dietary patterns in the remote past and telomere length. Eur J Clin Nutr. 2015.
O'Callaghan NJ, Toden S, Bird AR, Topping DL, Fenech M, Conlon MA. Colonocyte telomere shortening is greater with dietary red meat than white meat and is attenuated by resistant starch. Clinical nutrition (Edinburgh, Scotland). 2012;31:60–4.
Toden S, Bird AR, Topping DL, Conlon MA. High red meat diets induce greater numbers of colonic DNA double-strand breaks than white meat in rats: attenuation by high-amylose maize starch. Carcinogenesis. 2007;28:2355–62.
Gilsing AMJ, Fransen F, de Kok, Theo M, Goldbohm AR, Schouten LJ, de Bruïne, Adriaan P, van Engeland M, van den Brandt, Piet A, de Goeij, Anton FPM, Weijenberg MP. Dietary heme iron and the risk of colorectal cancer with specific mutations in KRAS and APC. Carcinogenesis. 2013;34:2757–66.
Hogervorst JGF, de Bruijn-Geraets D, Schouten LJ, van Engeland M, Theo MCM, Goldbohm RA, van den Brandt, Piet A, Weijenberg MP. Dietary acrylamide intake and the risk of colorectal cancer with specific mutations in KRAS and APC. Carcinogenesis. 2014;35:1032–8.
Gilsing AMJ, Berndt SI, Ruder EH, Graubard BI, Ferrucci LM, Burdett L, Weissfeld JL, Cross AJ, Sinha R. Meat-related mutagen exposure, xenobiotic metabolizing gene polymorphisms and the risk of advanced colorectal adenoma and cancer. Carcinogenesis. 2012;33:1332–9.
Mourouti N, Kontogianni MD, Papavagelis C, Plytzanopoulou P, Vassilakou T, Psaltopoulou T, Malamos N, Linos A, Panagiotakos DB. Meat consumption and breast cancer: a case–control study in women. Meat Sci. 2015;100:195–201.
Inoue-Choi M, Sinha R, Gierach GL, Ward MH. Red and processed meat, nitrite, and heme iron intakes and postmenopausal breast cancer risk in the NIH-AARP Diet and Health Study, International journal of cancer. Journal international du cancer. 2015.
Nettleton JA, Diez-Roux A, Jenny NS, Fitzpatrick AL, Jacobs DR Jr, Dietary patterns, food groups, and telomere length in the Multi-Ethnic Study of Atherosclerosis (MESA)., Am J Clin Nutr. 2008;88:1405–1412.
Pizzimenti S, Menegatti E, Berardi D, Toaldo C, Pettazzoni P, Minelli R, Giglioni B, Cerbone A, Dianzani MU, Ferretti C, Barrera G. 4-hydroxynonenal, a lipid peroxidation product of dietary polyunsaturated fatty acids, has anticarcinogenic properties in colon carcinoma cell lines through the inhibition of telomerase activity. J Nutr Biochem. 2010;21:818–26.
Shao L, Li Q-h, Tan Z. l-Carnosine reduces telomere damage and shortening rate in cultured normal fibroblasts. Biochem Biophys Res Commun. 2004;324:931–6.
Burkert NT, Muckenhuber J, Großschädl F, Rásky E, Freidl W. Nutrition and health - the association between eating behavior and various health parameters: a matched sample study. PLoS One. 2014;9, e88278.
Diaz-Rua R, Keijer J, Caimari A, van Schothorst, Evert M, Palou A, Oliver P. Peripheral blood mononuclear cells as a source to detect markers of homeostatic alterations caused by the intake of diets with an unbalanced macronutrient composition. J Nutr Biochem. 2015;26:398–407.
Lee K-Y, Uchida K, Shirota T, Kono S. Validity of a self-administered food frequency questionnaire against 7-day dietary records in four seasons. J Nutr Sci Vitaminol. 2002;48:467–76.
Pusceddu I, Herrmann M, Kirsch SH, Werner C, Hubner U, Bodis M, Laufs U, Wagenpfeil S, Geisel J, Herrmann W. Prospective study of telomere length and LINE-1 methylation in peripheral blood cells: the role of B vitamins supplementation. Eur J Nutr. 2015.
Shin C, Baik I. Leukocyte telomere length is associated with serum vitamin B12 and homocysteine levels in older adults with the presence of systemic inflammation. Clin Nutr Res. 2016;5:7–14.
Williams DM, Palaniswamy S, Sebert S, Buxton JL, Blakemore AIF, Hypponen E, Jarvelin M-R. 25-Hydroxyvitamin D Concentration and Leukocyte Telomere Length in Young Adults: Findings From the Northern Finland Birth Cohort 1966. Am J Epidemiol. 1966;183(2016):191–8.
Paul L, Jacques PF, Aviv A, Vasan RS, D'Agostino RB, Levy D, Selhub J. High plasma folate is negatively associated with leukocyte telomere length in Framingham Offspring cohort. Eur J Nutr. 2015;54:235–41.
Paul L, Cattaneo M, D'Angelo A, Sampietro F, Fermo I, Razzari C, Fontana G, Eugene N, Jacques PF, Selhub J. Telomere length in peripheral blood mononuclear cells is associated with folate status in men. J Nutr. 2009;139:1273–8.
Lin Y, Damjanovic A, Metter EJ, Nguyen H, Truong T, Najarro K, Morris C, Longo DL, Zhan M, Ferrucci L, Hodes RJ, Weng N-p. Age-associated telomere attrition of lymphocytes in vivo is co-ordinated with changes in telomerase activity, composition of lymphocyte subsets and health conditions. Clin Sci (Lond). 1979;128(2015):367–77.
Steenstrup T, Hjelmborg JVB, Kark JD, Christensen K, Aviv A. The telomere lengthening conundrum--artifact or biology? Nucleic Acids Res. 2013.
Song Y, You N-CY, Song Y, Kang MK, Hou L, Wallace R, Eaton CB, Tinker LF, Liu S. Intake of small-to-medium-chain saturated fatty acids is associated with peripheral leukocyte telomere length in postmenopausal women. J Nutr. 2013;143:907–14.
Zhang W-G, Zhu S-Y, Zhao D-L, Jiang S-M, Li J, Li Z-X, Fu B, Zhang M, Li D-G, Bai X-J, Cai G-Y, Sun X-F, Chen X-M. The correlation between peripheral leukocyte telomere length and indicators of cardiovascular aging. Heart Lung Circ. 2014;23:883–90.
Chilton WL, Marques FZ, West J, Kannourakis G, Berzins SP, O'Brien BJ, Charchar FJ. Acute exercise leads to regulation of telomere-associated genes and microRNA expression in immune cells. PLoS One. 2014;9, e92088.
Saßenroth D, Meyer A, Salewsky B, Kroh M, Norman K, Steinhagen-Thiessen E, Demuth I. Sports and exercise at different ages and leukocyte telomere length in later life - data from the Berlin Aging Study II (BASE-II). PLoS One. 2015;10, e0142131.
Rode L, Nordestgaard BG, Weischer M, Bojesen SE. Increased body mass index, elevated C-reactive protein, and short telomere length. J Clin Endocrinol Metab. 2014;99:E1671–5.
Müezzinler A, Zaineddin AK, Brenner H. Body mass index and leukocyte telomere length in adults: a systematic review and meta-analysis. Obesity reviews an official journal of the International Association for the Study of Obesity. 2014;15:192–201.
Adler N, Pantell MS, O'Donovan A, Blackburn E, Cawthon R, Koster A, Opresko P, Newman A, Harris TB, Epel E. Educational attainment and late life telomere length in the Health. Aging and Body Composition Study, Brain, behavior, and immunity. 2013;27:15–21.
Pearce MS, Mann KD, Martin-Ruiz C, Parker L, White M, von Zglinicki T, Adams J. Childhood growth, IQ and education as predictors of white blood cell telomere length at age 49–51 years: the Newcastle Thousand Families Study. PLoS One. 2012;7, e40116.
Steptoe A, Hamer M, Butcher L, Lin J, Brydon L, Kivimäki M, Marmot M, Blackburn E, Erusalimsky JD. Educational attainment but not measures of current socioeconomic circumstances are associated with leukocyte telomere length in healthy older men and women. Brain Behav Immun. 2011;25:1292–8.
Darmon N, Drewnowski A. Does social class predict diet quality? Am J Clin Nutr. 2008;87:1107–17.
The authors would like to thank Bożena Szymańska and Hanna Jerczyńska from Central Laboratory of Medical University of Lodz.
This study was partially supported by grants no. 503/8-071-03/503-01 and no. 503/1-000-00/503-16 from the Medical University of Lodz.
Availability of data and materials
The datasets analysed during the current study available from the corresponding author on reasonable request.
MK and DN were responsible for study design, data acquisition and statistical analysis. MOE and MP were responsible for cell isolation and laboratory assays. MK, DN and MOE drafted the manuscript. All authors read and approved the final manuscript.
The authors declare that they have no competing interests.
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Ethics approval and consent to participate
The investigation was conducted in accordance with the ethical standards. The study protocol was approved by the Ethical Committee of the Medical University of Lodz (reference number: RNN/535/13/KB). All participants were informed about the study protocol and asked to sign a written consent form.
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Kasielski, M., Eusebio, M., Pietruczuk, M. et al. The relationship between peripheral blood mononuclear cells telomere length and diet - unexpected effect of red meat. Nutr J 15, 68 (2015). https://doi.org/10.1186/s12937-016-0189-2
- Telomere length
- Red meat
- Peripheral blood mononuclear cells
- Real-time Polymerase Chain Reaction