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Bhavadharini B, Dehghan M, Mente A, Rangarajan S, Sheridan P, Mohan V, Iqbal R, Gupta R, Lear S, Wentzel-Viljoen E, Avezum A, Lopez-Jaramillo P, Mony P, Varma RP, Kumar R, Chifamba J, Alhabib KF, Mohammadifard N, Oguz A, Lanas F, Rozanska D, Bengtsson Bostrom K, Yusoff K, Tsolkile LP, Dans A, Yusufali A, Orlandini A, Poirier P, Khatib R, Hu B, Wei L, Yin L, Deeraili A, Yeates K, Yusuf R, Ismail N, Mozaffarian D, Teo K, Anand SS, Yusuf S. Association of dairy consumption with metabolic syndrome, hypertension and diabetes in 147 812 individuals from 21 countries. BMJ Open Diabetes Res Care 2020; 8:8/1/e000826. [PMID: 32423962 PMCID: PMC7326257 DOI: 10.1136/bmjdrc-2019-000826] [Citation(s) in RCA: 45] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/14/2019] [Revised: 01/07/2020] [Accepted: 01/22/2020] [Indexed: 12/11/2022] Open
Abstract
OBJECTIVE Our aims were to assess the association of dairy intake with prevalence of metabolic syndrome (MetS) (cross-sectionally) and with incident hypertension and incident diabetes (prospectively) in a large multinational cohort study. METHODS The Prospective Urban Rural Epidemiology (PURE) study is a prospective epidemiological study of individuals aged 35 and 70 years from 21 countries on five continents, with a median follow-up of 9.1 years. In the cross-sectional analyses, we assessed the association of dairy intake with prevalent MetS and its components among individuals with information on the five MetS components (n=112 922). For the prospective analyses, we examined the association of dairy with incident hypertension (in 57 547 individuals free of hypertension) and diabetes (in 131 481 individuals free of diabetes). RESULTS In cross-sectional analysis, higher intake of total dairy (at least two servings/day compared with zero intake; OR 0.76, 95% CI 0.71 to 0.80, p-trend<0.0001) was associated with a lower prevalence of MetS after multivariable adjustment. Higher intakes of whole fat dairy consumed alone (OR 0.72, 95% CI 0.66 to 0.78, p-trend<0.0001), or consumed jointly with low fat dairy (OR 0.89, 95% CI 0.80 to 0.98, p-trend=0.0005), were associated with a lower MetS prevalence. Low fat dairy consumed alone was not associated with MetS (OR 1.03, 95% CI 0.77 to 1.38, p-trend=0.13). In prospective analysis, 13 640 people with incident hypertension and 5351 people with incident diabetes were recorded. Higher intake of total dairy (at least two servings/day vs zero serving/day) was associated with a lower incidence of hypertension (HR 0.89, 95% CI 0.82 to 0.97, p-trend=0.02) and diabetes (HR 0.88, 95% CI 0.76 to 1.02, p-trend=0.01). Directionally similar associations were found for whole fat dairy versus each outcome. CONCLUSIONS Higher intake of whole fat (but not low fat) dairy was associated with a lower prevalence of MetS and most of its component factors, and with a lower incidence of hypertension and diabetes. Our findings should be evaluated in large randomized trials of the effects of whole fat dairy on the risks of MetS, hypertension, and diabetes.
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Affiliation(s)
- Balaji Bhavadharini
- Population Health Research Institute, Hamilton Health Sciences and McMaster University, Hamilton, Ontario, Canada
| | - Mahshid Dehghan
- Population Health Research Institute, Hamilton Health Sciences and McMaster University, Hamilton, Ontario, Canada
| | - Andrew Mente
- Population Health Research Institute, Hamilton Health Sciences and McMaster University, Hamilton, Ontario, Canada
- Department of Health Research Methods, Evidence and Impact, McMaster University, Hamilton, Ontario, Canada
| | - Sumathy Rangarajan
- Population Health Research Institute, Hamilton Health Sciences and McMaster University, Hamilton, Ontario, Canada
| | - Patrick Sheridan
- Population Health Research Institute, Hamilton Health Sciences and McMaster University, Hamilton, Ontario, Canada
| | - Viswanathan Mohan
- Epidemiology, Madras Diabetes Research Foundation, Chennai, Tamil Nadu, India
- Diabetology, Dr Mohan's Diabetes Specialities Centre Gopalapuram, Chennai, Tamil Nadu, India
| | | | - Rajeev Gupta
- Preventive Cardiology, Eternal Heart Care Centre & Research Institute, Jaipur, Rajasthan, India
| | - Scott Lear
- Kinesiology, Simon Fraser University, Burnaby, British Columbia, Canada
| | | | - Alvaro Avezum
- Research Division, Dante Pazzanese Institute of Cardiology, São Paulo, Brazil
| | | | - Prem Mony
- St John's Medical College & Research Institute, Bengaluru, Karnataka, India
| | - Ravi Prasad Varma
- Achutha Menon Centre for Health Science Studies, Thiruvananthapuram, Kerala, India
| | - Rajesh Kumar
- Post Graduate Institute of Medical Education and Research, Chandigarh, India
| | | | | | | | - Aytekin Oguz
- Internal Medicine, Goztepe Training and Research Hospital, Istanbul, Marmara, Turkey
| | | | | | | | - Khalid Yusoff
- Universiti Teknologi MARA, Shah Alam, Selangor, Malaysia
| | | | - Antonio Dans
- University of the Philippines System, Quezon City, Metro Manila, Philippines
| | | | | | - Paul Poirier
- Cardiology, Institut universitaire de cardiologie et de pneumologie de Quebec, Quebec City, Quebec, Canada
| | - Rasha Khatib
- Northwestern University Feinberg School of Medicine, Chicago, Illinois, USA
| | - Bo Hu
- Peking Union Medical College School of Basic Medicine, Beijing, China
| | - Li Wei
- Medical Research & Biometrics Center, Chinese Academy of Medical Sciences and Peking Union Medical College Fuwai Hospital, Xicheng District, Beijing, China
| | - Lu Yin
- Peking Union Medical College School of Basic Medicine, Beijing, China
| | - Ai Deeraili
- Xinjiang Uighur Autonomous Region Center for Disease Control and Prevention, Wulumuqi, Xinjiang, China
| | | | - Rita Yusuf
- Independent University, Dhaka, Bangladesh
| | | | - Dariush Mozaffarian
- Tufts Friedman School of Nutrition Science & Policy, Boston, Massachusetts, USA
| | - Koon Teo
- Population Health Research Institute, Hamilton Health Sciences and McMaster University, Hamilton, Ontario, Canada
- Department of Health Research Methods, Evidence and Impact, McMaster University, Hamilton, Ontario, Canada
- Department of Medicine, McMaster University, Hamilton, Ontario, Canada
| | - Sonia S Anand
- Population Health Research Institute, Hamilton Health Sciences and McMaster University, Hamilton, Ontario, Canada
- Department of Health Research Methods, Evidence and Impact, McMaster University, Hamilton, Ontario, Canada
- Department of Medicine, McMaster University, Hamilton, Ontario, Canada
| | - Salim Yusuf
- Population Health Research Institute, Hamilton Health Sciences and McMaster University, Hamilton, Ontario, Canada
- Department of Health Research Methods, Evidence and Impact, McMaster University, Hamilton, Ontario, Canada
- Department of Medicine, McMaster University, Hamilton, Ontario, Canada
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Dehghan M, Mente A, Rangarajan S, Sheridan P, Mohan V, Iqbal R, Gupta R, Lear S, Wentzel-Viljoen E, Avezum A, Lopez-Jaramillo P, Mony P, Varma RP, Kumar R, Chifamba J, Alhabib KF, Mohammadifard N, Oguz A, Lanas F, Rozanska D, Bostrom KB, Yusoff K, Tsolkile LP, Dans A, Yusufali A, Orlandini A, Poirier P, Khatib R, Hu B, Wei L, Yin L, Deeraili A, Yeates K, Yusuf R, Ismail N, Mozaffarian D, Teo K, Anand SS, Yusuf S. Association of dairy intake with cardiovascular disease and mortality in 21 countries from five continents (PURE): a prospective cohort study. Lancet 2018; 392:2288-2297. [PMID: 30217460 DOI: 10.1016/s0140-6736(18)31812-9] [Citation(s) in RCA: 245] [Impact Index Per Article: 40.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/18/2018] [Revised: 07/30/2018] [Accepted: 08/01/2018] [Indexed: 12/28/2022]
Abstract
BACKGROUND Dietary guidelines recommend minimising consumption of whole-fat dairy products, as they are a source of saturated fats and presumed to adversely affect blood lipids and increase cardiovascular disease and mortality. Evidence for this contention is sparse and few data for the effects of dairy consumption on health are available from low-income and middle-income countries. Therefore, we aimed to assess the associations between total dairy and specific types of dairy products with mortality and major cardiovascular disease. METHODS The Prospective Urban Rural Epidemiology (PURE) study is a large multinational cohort study of individuals aged 35-70 years enrolled from 21 countries in five continents. Dietary intakes of dairy products for 136 384 individuals were recorded using country-specific validated food frequency questionnaires. Dairy products comprised milk, yoghurt, and cheese. We further grouped these foods into whole-fat and low-fat dairy. The primary outcome was the composite of mortality or major cardiovascular events (defined as death from cardiovascular causes, non-fatal myocardial infarction, stroke, or heart failure). Hazard ratios (HRs) were calculated using multivariable Cox frailty models with random intercepts to account for clustering of participants by centre. FINDINGS Between Jan 1, 2003, and July 14, 2018, we recorded 10 567 composite events (deaths [n=6796] or major cardiovascular events [n=5855]) during the 9·1 years of follow-up. Higher intake of total dairy (>2 servings per day compared with no intake) was associated with a lower risk of the composite outcome (HR 0·84, 95% CI 0·75-0·94; ptrend=0·0004), total mortality (0·83, 0·72-0·96; ptrend=0·0052), non-cardiovascular mortality (0·86, 0·72-1·02; ptrend=0·046), cardiovascular mortality (0·77, 0·58-1·01; ptrend=0·029), major cardiovascular disease (0·78, 0·67-0·90; ptrend=0·0001), and stroke (0·66, 0·53-0·82; ptrend=0·0003). No significant association with myocardial infarction was observed (HR 0·89, 95% CI 0·71-1·11; ptrend=0·163). Higher intake (>1 serving vs no intake) of milk (HR 0·90, 95% CI 0·82-0·99; ptrend=0·0529) and yogurt (0·86, 0·75-0·99; ptrend=0·0051) was associated with lower risk of the composite outcome, whereas cheese intake was not significantly associated with the composite outcome (0·88, 0·76-1·02; ptrend=0·1399). Butter intake was low and was not significantly associated with clinical outcomes (HR 1·09, 95% CI 0·90-1·33; ptrend=0·4113). INTERPRETATION Dairy consumption was associated with lower risk of mortality and major cardiovascular disease events in a diverse multinational cohort. FUNDING Full funding sources are listed at the end of the paper (see Acknowledgments).
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Affiliation(s)
- Mahshid Dehghan
- Population Health Research Institute, McMaster University, Hamilton, ON, Canada.
| | - Andrew Mente
- Population Health Research Institute, McMaster University, Hamilton, ON, Canada; Department of Health Research Methods, Evidence, and Impact, McMaster University, Hamilton, ON, Canada
| | - Sumathy Rangarajan
- Population Health Research Institute, McMaster University, Hamilton, ON, Canada
| | - Patrick Sheridan
- Population Health Research Institute, McMaster University, Hamilton, ON, Canada
| | | | - Romaina Iqbal
- Department of Community Health Sciences and Medicine, Aga Khan University, Karachi, Pakistan
| | - Rajeev Gupta
- Department of Medicine, Eternal Heart Care Centre and Research Institute, Jaipur, India
| | - Scott Lear
- Faculty of Health Sciences, Simon Fraser University, BC, Canada
| | | | - Alvaro Avezum
- Dante Pazzanese Institute of Cardiology, São Paulo, Brazil
| | - Patricio Lopez-Jaramillo
- Research Department, Fundacion Oftalmologica de Santander, Medical School, University of Santander, Floridablanca-Santander, Colombia
| | - Prem Mony
- Division of Epidemiology and Population Health, St John's Medical College and Research Institute, Bangalore, India
| | - Ravi Prasad Varma
- Faculty of Health Sciences, Achutha Menon Centre for Health Science Studies Health Action by People, Thiruvananthapuram, Kerala, India
| | - Rajesh Kumar
- Post Graduate Institute of Medical Education and Research (PGIMER) School of Public Health, Chandigarh, India
| | - Jephat Chifamba
- College of Health Sciences, Physiology Department, University of Zimbabwe, Harare, Zimbabwe
| | - Khalid F Alhabib
- Department of Cardiac Sciences, King Fahad Cardiac Center, College of Medicine, King Saud University, Riyadh, Saudi Arabia
| | - Noushin Mohammadifard
- Isfahan Cardiovascular Research Center, Cardiovascular Research Institute, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Aytekin Oguz
- Department of Internal Medicine, Istanbul Medeniyet University Faculty of Medicine, Istanbul, Turkey
| | - Fernando Lanas
- Department of Medicine, Universidad de La Frontera, Francisco Salazar, Temuco, Chile
| | - Dorota Rozanska
- Department of Dietetics, Wroclaw Medical University, Wroclaw, Poland
| | - Kristina Bengtsson Bostrom
- Närhälsan R&D Centre Skaraborg Primary Care Skövde and Department of Public Health and Community Medicine, Primary Health Care, the Sahlgrenska Academy, University of Gothenburg, Sweden
| | - Khalid Yusoff
- Department of Medicine, Universiti Teknologi MARA, Sungai Buloh, Selangor, Malaysia; Department of Medicine, UCSI University, Cheras, Selangor, Malaysia
| | - Lungiswa P Tsolkile
- School of Public Health, University of the Western Cape, Cape Town, Western Cape Province, South Africa
| | - Antonio Dans
- Department of Medicine, University of the Philippines, Manila, Philippines
| | - AfzalHussein Yusufali
- Dubai Medical University, Hatta Hospital, Dubai Health Authority, Dubai, United Arab Emirates
| | | | - Paul Poirier
- Institut universitaire de cardiologie et pneumologie de Québec, Université laval, QC, Canada
| | - Rasha Khatib
- Departments of Neurology, Northwestern University Feinberg School of Medicine, Chicago, IL, USA
| | - Bo Hu
- State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Disease, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, China
| | - Li Wei
- State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Disease, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, China
| | - Lu Yin
- State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Disease, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, China
| | - Ai Deeraili
- Center for Disease Control and Prevention of Xinjiang Hetian, Xinjiang, China
| | - Karen Yeates
- Department of Medicine, Queen's University, Kingston, ON, Canada
| | - Rita Yusuf
- Population Health Research Institute, McMaster University, Hamilton, ON, Canada
| | - Noorhassim Ismail
- Department of Community Health, University Kebangsaan Malaysia Medical Centre, Malaysia
| | - Dariush Mozaffarian
- Friedman School of Nutrition Science and Policy, Tufts University, Medford, MA, USA
| | - Koon Teo
- Population Health Research Institute, McMaster University, Hamilton, ON, Canada
| | - Sonia S Anand
- Population Health Research Institute, McMaster University, Hamilton, ON, Canada
| | - Salim Yusuf
- School of Life Sciences, Independent University, Bashundhara, Dhaka, Bangladesh
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Czekajlo A, Rozanska D, Zatonska K, Szuba A, Regulska-Ilow B. P1538Association between dietary patterns and cardiovascular disease risk in selected population of Polish adults. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy565.p1538] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- A Czekajlo
- Wroclaw Medical University, Department of Dietetics, Wroclaw, Poland
| | - D Rozanska
- Wroclaw Medical University, Department of Dietetics, Wroclaw, Poland
| | - K Zatonska
- Wroclaw Medical University, Department of Social Medicine, Wroclaw, Poland
| | - A Szuba
- 4th Military Hospital, Department of Internal Medicine, Wroclaw, Poland
| | - B Regulska-Ilow
- Wroclaw Medical University, Department of Dietetics, Wroclaw, Poland
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Abstract
AIMS To describe a simple, minimally invasive method of ovariohysterectomy via a unilateral flank approach in guinea pigs, for use in routine desexing of healthy female guinea pigs or treatment of ovarian cysts. METHODS The subjects of this retrospective study were 41 client-owned guinea pigs submitted for routine desexing or treatment of ovarian cysts. They included 16 healthy female guinea pigs aged 8-12 months (Group 1), and 15 females aged from 9 months to 3 years (Group 2), and 10 females aged from 3 to 7 years (Group 3) with different-sized ovarian cysts. Prior to surgery, the animals received clinical examination, blood testing (complete blood count and serum biochemistry profile) and examination of the abdomen using ultrasonography, to assess the condition of the reproductive tract and ensure the guinea pigs were fit for surgery. Ovariohysterectomy was performed via a unilateral flank incision made close to the erector spinae muscle starting approximately 1 cm caudal to the last rib. Both ovaries, uterine horns, and the uterine cervix were localised, ligated, and dissected through this unilateral retroperitoneal incision. RESULTS Ovariohysterectomy was successfully completed via a single flank incision in 38/41 (93%) guinea pigs. Three guinea pigs with ovarian cysts from Group 3, which were >6 years old died during surgery due to circulatory and respiratory failure under anaesthesia. In the remaining 38 cases, surgery proceeded without complications. A further two guinea pigs from Group 3 were reluctant to move or eat for the first 3 days after surgery but recovered after provision of supportive care. All 38 animals fully recovered and wound healing was normal. CONCLUSIONS This is the first report of ovariohysterectomy via a unilateral flank incision in guinea pigs. This approach is a simple, minimally invasive and safe alternative to the midline or bilateral flank approaches currently used for surgery of the reproductive tract in guinea pigs.
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Affiliation(s)
- D Rozanska
- a Department and Clinic of Animal Surgery, Faculty of Veterinary Medicine , University of Life Sciences in Lublin , Akademicka 13 Street, 20-950 Lublin , Poland
| | - P Rozanski
- b Department of Biology and Environmental Hygiene, Faculty of Biology and Animal Breeding , University of Life Sciences in Lublin , Akademicka 13 Street, 20-950 Lublin , Poland
| | - M Orzelski
- a Department and Clinic of Animal Surgery, Faculty of Veterinary Medicine , University of Life Sciences in Lublin , Akademicka 13 Street, 20-950 Lublin , Poland
| | - N Chlebicka
- c Veterinary Clinic Rex , Leonarda 3a Street, 20-625 Lublin , Poland
| | - K Putowska
- a Department and Clinic of Animal Surgery, Faculty of Veterinary Medicine , University of Life Sciences in Lublin , Akademicka 13 Street, 20-950 Lublin , Poland
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Nowacka-Woszuk J, Szczerbal I, Salamon S, Kociucka B, Jackowiak H, Prozorowska E, Slaska B, Rozanska D, Orzelski M, Ochota M, Dzimira S, Lipiec M, Nizanski W, Switonski M. Testicular disorder of sex development in four cats with a male karyotype (38,XY; SRY-positive). Anim Reprod Sci 2014; 151:42-8. [PMID: 25455261 DOI: 10.1016/j.anireprosci.2014.10.001] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2014] [Revised: 10/02/2014] [Accepted: 10/05/2014] [Indexed: 12/25/2022]
Abstract
The molecular background of disorders of sex development (DSD) in cats is poorly recognized. In this study we present cytogenetic, molecular and histological analyses of four cats subjected for the analysis due to ambiguous external genitalia. Three cases, with rudimentary penises and an abnormal position of the urethral orifice, represented different types of hypospadias. The fourth case had a normal penis, a blind vulva and spermatogenetically active testes. Histological studies showed structures typical of testes, but spermatogenic activity was observed in two cats only. All the cats had a normal male chromosome complement (38,XY) and the Y-chromosome linked genes (SRY and ZFY) were also detected. Fluorescent in situ hybridization (FISH), with the use of the feline BAC probe harboring the SRY gene, excluded the possibility of chromosome translocation of the Y chromosome fragment carrying the SRY gene onto another chromosome. Sequencing of four candidate genes (SRY--sex determining region Y; AR--androgen receptor; SRD5A2--steroid-5-alfa reductase 2 and MAMLD1--mastermind-like domain containing (1) revealed one SNP in the SRY gene, one common polymorphism in exon 1 of the AR gene (tandem repeat of a tri-nucleotide motif--CAG), six polymorphisms (5 SNPs and 1 indel) in the SRD5A2 gene and one SNP in the MAMLD1 gene. Molecular studies of the candidate genes showed no association with the identified polymorphisms, thus molecular background of the studied DSD phenotypes remains unknown.
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Affiliation(s)
- Joanna Nowacka-Woszuk
- Department of Genetics and Animal Breeding, Poznan University of Life Sciences, 60-637 Poznan, Poland
| | - Izabela Szczerbal
- Department of Genetics and Animal Breeding, Poznan University of Life Sciences, 60-637 Poznan, Poland
| | - Sylwia Salamon
- Department of Genetics and Animal Breeding, Poznan University of Life Sciences, 60-637 Poznan, Poland
| | - Beata Kociucka
- Department of Genetics and Animal Breeding, Poznan University of Life Sciences, 60-637 Poznan, Poland
| | - Hanna Jackowiak
- Department of Histology and Embryology, Institute of Zoology, Poznan University of Life Sciences, 60-637 Poznan, Poland
| | - Ewelina Prozorowska
- Department of Histology and Embryology, Institute of Zoology, Poznan University of Life Sciences, 60-637 Poznan, Poland
| | - Brygida Slaska
- Department of Biological Bases of Animal Production, University of Life Sciences in Lublin, Lublin, Poland
| | - Dorota Rozanska
- Department and Clinic of Animal Surgery, University of Life Sciences in Lublin, Lublin, Poland
| | - Maciej Orzelski
- Department and Clinic of Animal Surgery, University of Life Sciences in Lublin, Lublin, Poland
| | - Malgorzata Ochota
- Department of Reproduction and Clinic of Farm Animals, Wroclaw University of Environmental and Life Sciences, Wroclaw, Poland
| | - Stanislaw Dzimira
- Department of Pathology, Wroclaw University of Environmental and Life Sciences, Wroclaw, Poland
| | | | - Wojciech Nizanski
- Department of Reproduction and Clinic of Farm Animals, Wroclaw University of Environmental and Life Sciences, Wroclaw, Poland
| | - Marek Switonski
- Department of Genetics and Animal Breeding, Poznan University of Life Sciences, 60-637 Poznan, Poland.
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Slaska B, Grzybowska-Szatkowska L, Nisztuk S, Surdyka M, Rozanska D. Mitochondrial DNA polymorphism in genes encoding ND1, COI and CYTB in canine malignant cancers. ACTA ACUST UNITED AC 2013; 26:452-8. [PMID: 24102599 DOI: 10.3109/19401736.2013.840594] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
The aim of the study was to identify DNA changes in mitochondrial gene fragments: NADH dehydrogenase subunit 1 (ND1), cytochrome c oxidase subunit I (COI) and cytochrome b (CYTB) in tumor tissue, normal tissue and blood, and to define their association with the tumor type in dogs. Molecular analysis included 144 tests in total. A functional effect of the non-synonymous protein coding SNP was predicted. The presence of polymorphisms in all tested gene fragments in individual tissues of dogs was observed. Heteroplasmic changes were found in ND1 and CYTB in epithelioma glandulae sebacei and in CYTB in lymphoma centroblasticum. The results of in silico analysis show the impact of these alleles (COI: 507, ND1: 450, 216, CYTB: 748) on the functioning of proteins and thus their potential role in carcinogenesis. The possible harmful effects of changes in polypeptides in positions T193N, V98M, V118M and H196P were evaluated. It seems that polymorphisms occurring in cells can have a negative impact on functioning of proteins. This promotes disorders of the energy level in cells.
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Affiliation(s)
- Brygida Slaska
- Department of Biological Bases of Animal Production, University of Life Sciences in Lublin , Lublin , Poland
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Slaska B, Grzybowska-Szatkowska L, Surdyka M, Nisztuk S, Rozanska D, Rozanski P, Smiech A, Orzelski M. Mitochondrial D-loop mutations and polymorphisms are connected with canine malignant cancers. ACTA ACUST UNITED AC 2013; 25:238-43. [PMID: 23656294 DOI: 10.3109/19401736.2013.792054] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Abstract The aim of the conducted investigations was to identify differences in the D-loop nucleotide sequence between neoplastic tissue, normal tissue, and blood and to determine their correlation with the type of cancer in dogs. In 62.5% of the analyzed tumors of epithelial origin and 25% tumors of mesenchymal origin, substitution was detected within the D-loop sequence between the neoplastic tissue, normal tissue, and blood. Two mutations occurring in the carcinogenic process in position T15620C have been identified in epithelioma glandulae sebacei and carcinoma planoepithelialae keratodes. Blood and cancer heteroplasmy was diagnosed for carcinoma planoepithelialae keratodes and "Comedo" carcinoma. The results of the study indicate that polymorphic changes in the D-loop sequence promote carcinogenesis in dogs. Heteroplasmy diagnosed in blood and tumor cells and absence thereof in normal tissue may imply mtDNA recombination. High prevalence of mtDNA mutations in canine tumors may suggest mtDNA genetic instability, which is likely to play a role in carcinogenesis.
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Affiliation(s)
- Brygida Slaska
- Department of Biological Bases of Animal Production, University of Life Sciences in Lublin , Lublin , Poland
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