1
|
Aliberti SM, Funk RHW, Schiavo L, Giudice A, Ciaglia E, Puca AA, Gonnella J, Capunzo M. Clinical Status, Nutritional Behavior, and Lifestyle, and Determinants of Community Well-Being of Patients from the Perspective of Physicians: A Cross-Sectional Study of Young Older Adults, Nonagenarians, and Centenarians in Salerno and Province, Italy. Nutrients 2022; 14:nu14173665. [PMID: 36079922 PMCID: PMC9459717 DOI: 10.3390/nu14173665] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2022] [Accepted: 08/26/2022] [Indexed: 11/16/2022] Open
Abstract
Longevity is rightly considered one of the greatest achievements of modern society. Biomedical research has shown that aging is the major risk factor for many diseases, so to find the right answers to aging it is necessary to identify factors that can positively influence longevity. This study investigated the clinical status, nutritional behavior, lifestyle, and social and community determinants of the well-being of young older adults and nonagenarians/centenarians in Salerno and province through the judgment of their physicians. Data were collected through an online survey. Multivariate Poisson and logistic regression models were used to calculate significant predictors of the outcomes of interest. The interesting finding was that cardiovascular disease was a risk factor for young older adults, while it was a protective factor for nonagenarians/centenarians, meaning that as age increased, heart problems tended to decrease. Certain foods were found to be a significant protective factor for both young older adult and nonagenarian-centenarian patients. In addition, psychosomatic disorders were found to be determinant for the young older adults, while depression was a risk factor for the nonagenarians/centenarians because they were not always gratified by their long lives and often felt like a burden on the family. The protective significant variable among the determinants of community well-being for both young older adults and nonagenarians/centenarians was the retention of honorary achievement. Based on our results, we are able to support the hypothesis of a difference between the young older adults and the nonagenarians/centenarians in clinical status, nutritional behaviors, lifestyle, and determinants of community well-being. However, societies need more social and educational programs that are able to build "a new idea of old age" by improving and supporting the young older adults and the nonagenarians/centenarians, with the goal of intergenerational solidarity, well-being, and social inclusion, as well as preventive interventions on lifestyles and nutrition, which will allow us to provide a new key to understanding aging.
Collapse
Affiliation(s)
- Silvana Mirella Aliberti
- Department of Medicine, Surgery and Dentistry “Scuola Medica Salernitana”, University of Salerno, 84081 Salerno, Italy
- Correspondence: ; Tel.: +39-089-965227
| | - Richard H. W. Funk
- Medical Faculty Carl Gustav Carus, Institute of Anatomy, University of Technology (TU) Dresden, 01307 Dresden, Germany
| | - Luigi Schiavo
- Department of Medicine, Surgery and Dentistry “Scuola Medica Salernitana”, University of Salerno, 84081 Salerno, Italy
| | - Aldo Giudice
- Department of Medicine, Surgery and Dentistry “Scuola Medica Salernitana”, University of Salerno, 84081 Salerno, Italy
- Animal Facility, Istituto Nazionale Tumori—Istituto di Ricovero e Cura a Carattere Scientifico (IRCCS)—“Fond. G. Pascale”, 80131 Naples, Italy
| | - Elena Ciaglia
- Department of Medicine, Surgery and Dentistry “Scuola Medica Salernitana”, University of Salerno, 84081 Salerno, Italy
| | - Annibale Alessandro Puca
- Department of Medicine, Surgery and Dentistry “Scuola Medica Salernitana”, University of Salerno, 84081 Salerno, Italy
- Cardiovascular Research Unit, IRCCS MultiMedica, 20138 Milan, Italy
| | - Joseph Gonnella
- Center for Medical Research in Medical Education and Health Care, Sidney Kimmel Medical College, Thomas Jefferson University, Philadelphia, PA 19107, USA
| | - Mario Capunzo
- Department of Medicine, Surgery and Dentistry “Scuola Medica Salernitana”, University of Salerno, 84081 Salerno, Italy
- Complex Operational Unit Health Hygiene, University Hospital “San Giovanni di Dio e Ruggi d’Aragona”, 84131 Salerno, Italy
| |
Collapse
|
2
|
Kreouzi M, Theodorakis N, Constantinou C. Lessons Learned From Blue Zones, Lifestyle Medicine Pillars and Beyond: An Update on the Contributions of Behavior and Genetics to Wellbeing and Longevity. Am J Lifestyle Med 2022. [DOI: 10.1177/15598276221118494] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Blue Zones are regions of the world that have a higher number of individuals who live longer than the expected average. The current paper revisits principles previously identified to be common in Blue Zones and to be contributing to longevity ( move naturally, eat wisely, improve resilience to stress, get adequate sleep, keep strong family ties, stimulate strong community support, respect for the planet and having a purpose in life’), compares these to the 6 pillars of Lifestyle Medicine ( healthy eating, exercising, avoidance of smoking and other risky substances, stress management, restorative sleep, and forming and maintaining relationships) and reviews new studies investigating the association between behavioral factors and longevity. In addition to the role of behavior, the review also discusses the important role of genetics and emphasizes the importance of conducting further research to understand how behavioral and genetic factors may affect molecular pathways with consequent effects on wellbeing and longevity.
Collapse
Affiliation(s)
- Magdalini Kreouzi
- Department of Basic and Clinical Sciences, University of Nicosia Medical School, Nicosia, Cyprus (MK, CC); Department of Internal Medicine, Limassol General Hospital, Limassol, Cyprus (NT)
| | - Nikolaos Theodorakis
- Department of Basic and Clinical Sciences, University of Nicosia Medical School, Nicosia, Cyprus (MK, CC); Department of Internal Medicine, Limassol General Hospital, Limassol, Cyprus (NT)
| | - Constantina Constantinou
- Department of Basic and Clinical Sciences, University of Nicosia Medical School, Nicosia, Cyprus (MK, CC); Department of Internal Medicine, Limassol General Hospital, Limassol, Cyprus (NT)
| |
Collapse
|
3
|
Oxidative stress, aging, antioxidant supplementation and their impact on human health: An overview. Mech Ageing Dev 2022; 206:111707. [PMID: 35839856 DOI: 10.1016/j.mad.2022.111707] [Citation(s) in RCA: 34] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2022] [Revised: 07/06/2022] [Accepted: 07/10/2022] [Indexed: 12/12/2022]
Abstract
Aging is characterized by a progressive loss of tissue and organ function due to genetic and environmental factors, nutrition, and lifestyle. Oxidative stress is one the most important mechanisms of cellular senescence and increased frailty, resulting in several age-linked, noncommunicable diseases. Contributing events include genomic instability, telomere shortening, epigenetic mechanisms, reduced proteome homeostasis, altered stem-cell function, defective intercellular communication, progressive deregulation of nutrient sensing, mitochondrial dysfunction, and metabolic unbalance. These complex events and their interplay can be modulated by dietary habits and the ageing process, acting as potential measures of primary and secondary prevention. Promising nutritional approaches include the Mediterranean diet, the intake of dietary antioxidants, and the restriction of caloric intake. A comprehensive understanding of the ageing processes should promote new biomarkers of risk or diagnosis, but also beneficial treatments oriented to increase lifespan.
Collapse
|
4
|
Lomash A, Prasad A, Singh R, Kumar S, Gupta R, Dholakia D, Kumar P, Batra VV, Puri AS, Kapoor S. Evaluation of the Utility of Amino Acid Citrulline as a Surrogate Metabolomic Biomarker for the Diagnosis of Celiac Disease. Nutr Metab Insights 2021; 14:11786388211060603. [PMID: 34898991 PMCID: PMC8655831 DOI: 10.1177/11786388211060603] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2021] [Accepted: 10/13/2021] [Indexed: 11/16/2022] Open
Abstract
INTRODUCTION Citrulline is regarded as a biomarker for celiac disease (CD). Its utility for assessment and evaluation of additive predictive value for latent, potential CD and first degree relatives (FDRs) needs exploration. METHOD Consecutive 558 index cases diagnosed as per European Society for Pediatric Gastroenterology and Nutrition (ESPGHAN) 2012 guidelines and their 1565 FDRs were evaluated over five and half year period. Serology negative FDRs at initial visit and follow ups were served as controls. HLA typing for DQ2 and DQ8 genotypes, along with plasma and dried blood spot (DBS) filter paper citrulline were evaluated. RESULTS Median plasma citrulline values were 20.1 and 37.33 µMol/l in cases and controls (P < .001). Cut off values for Marsh grade 3a, 3b, and 3c were 35.0, 32.8, 25.26 µMol/l in CD patients and 36.51, 30.10, 25.26 µMol/l in biopsy proven FDR. Increasing trends of plasma citrulline levels with decreasing tTG-IgA levels were observed on follow up. Low plasma citrulline levels were observed with HLA DQ 2.5 genotype (P < .05). Agreement between DBS and plasma citrulline was 94.8%. CONCLUSION Citrulline is a good surrogate biomarker for identification of histopathological grade of damage, extent of mucosal recovery and has negative correlation with tTG-IgA. It identifies the silent and latent phase of CD. DBS citrulline provides adequate information and can be used for monitoring CD patients at remote locations.
Collapse
Affiliation(s)
- Avinash Lomash
- Department of Pediatrics, Division of Genetics, Maulana Azad Medical College, New Delhi, India
| | - Anupa Prasad
- Department of Biochemistry, Rajendra Institute of Medical Sciences, Ranchi, Jharkhand, India
| | - Raghvendra Singh
- Department of Pediatrics, Maulana Azad Medical College, New Delhi, India
| | - Somesh Kumar
- Department of Pediatrics, Division of Genetics, Maulana Azad Medical College, New Delhi, India
| | - Rishi Gupta
- Department of PSM- Ex Senior Resident, All India Institute of Medical Sciences, New Delhi, India
| | - Dhwani Dholakia
- Institute of Genomics and Integrative Biology, New Delhi, India
| | - Praveen Kumar
- Department of Pediatrics, Lady Hardinge Medical College, New Delhi, India
| | - Vineeta V Batra
- Department of Pathology, Govind Ballabh Pant Institute of Post Graduate Medical Education and Research, New Delhi, India
| | - Amarender S Puri
- Institute of Digestive and Hepatobiliary Sciences, Medanta, New Delhi, India
| | - Seema Kapoor
- Department of Pediatrics, Division of Genetics, Maulana Azad Medical College, New Delhi, India
| |
Collapse
|
5
|
Pandi S, Chinniah R, Sevak V, Ravi PM, Raju M, Vellaiappan NA, Karuppiah B. Association of HLA-DRB1, DQA1 and DQB1 alleles and haplotype in Parkinson's disease from South India. Neurosci Lett 2021; 765:136296. [PMID: 34655711 DOI: 10.1016/j.neulet.2021.136296] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2021] [Revised: 10/01/2021] [Accepted: 10/11/2021] [Indexed: 10/20/2022]
Abstract
Parkinson's disease (PD) is a chronic, neurodegenerative motor disease exhibiting familial and sporadic forms. The present study was aimed to elucidate the association of HLA-DRB1*, DQA1* and DQB1* alleles with PD. A total of 105 PD patients and 100 healthy controls were typed by PCR-SSP method. We further carried out high-resolution genotyping for DQB1 and DQA1. Results revealed the increased frequencies of alleles DRB1*04 (OR = 2.36), DRB1* 13 (OR = 4.04), DQA1* 01:04:01 (OR = 4.51), DQB1*02:01 (OR = 2.66) and DQB1*06:03 (OR = 2.65) in PD patients suggesting susceptible associations. Further, decreased frequencies observed for alleles DRB1*10 (OR = 0.34), DRB1*15 (OR = 0.44), DQA1*04:01 (OR = 0.28), DQA1*06:01 (OR = 0.11) and HLA-DQB1*05:01 (OR = 0.37) among patients have suggested protective associations. Significant disease associations were observed for two-locus haplotype such as DRB1*13-DQB1*06:03 (OR = 11.52), DQA1*01:041-DQB1*06:03 (OR = 16.50), DQA1*01:041-DQB1*05:02 (OR = 5.38) and DQA1*04:01-DQB1*06:03 (OR = 3.027). Protective associations were observed for haplotypes DRB1*10-DQB1*05:01 (OR = 0.21), DRB1*15-DQB1*06 (OR = 0.006), DQA1*04:01-DQB1*05:01 (OR = 0.400) and DQA1*04:01-DQB1*05:03 (OR = 0.196). The critical amino acid residue analyses have revealed strong susceptible association for the residues of DQB1 alleles such as: L26, S28, K71, T71 and A74, Y9, S30, D37, I37, A38, A57 and S57; and for the residues of DQA1 alleles such as: C11, F61, I74, and M76. Similarly, amino acid residues such as A13, G26, Y26, A71, S74, L9 and V38 of HLA-DQB1 alleles and residues such as Y11, G61, S74 and L76 of DQA1 alleles showed protective associations. Thus, our study documented the susceptible and protective associations of DRB1*, DQB1 and DQA1 alleles and haplotypes in developing the disease and their influence on longevity of PD patients in south India.
Collapse
Affiliation(s)
- Sasiharan Pandi
- Department of Immunology, School of Biological Sciences, Madurai, Tamil Nadu 625021, India
| | - Rathika Chinniah
- Department of Immunology, School of Biological Sciences, Madurai, Tamil Nadu 625021, India
| | - Vandit Sevak
- Department of Immunology, School of Biological Sciences, Madurai, Tamil Nadu 625021, India
| | - Padma Malini Ravi
- Department of Immunology, School of Biological Sciences, Madurai, Tamil Nadu 625021, India
| | - Muthuppandi Raju
- Department of Immunology, School of Biological Sciences, Madurai, Tamil Nadu 625021, India
| | | | - Balakrishnan Karuppiah
- Department of Immunology, School of Biological Sciences, Madurai, Tamil Nadu 625021, India.
| |
Collapse
|
6
|
Rangasamy N, Chinniah R, Ravi PM, Vijayan M, Sivanadham R, K V D, Pandi S, Sevak V, Krishnan P, Karuppiah B. HLA-DRB1* and DQB1* allele and haplotype diversity in eight tribal populations: Global affinities and genetic basis of diseases in South India. INFECTION GENETICS AND EVOLUTION 2020; 89:104685. [PMID: 33359263 DOI: 10.1016/j.meegid.2020.104685] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/06/2020] [Revised: 12/18/2020] [Accepted: 12/19/2020] [Indexed: 12/21/2022]
Abstract
The distribution of HLA class-II DRB1* and DQB1* alleles/ haplotypes were studied in 438 individuals of 8 Dravidian tribal groups inhabiting the Western Ghats, south India. The HLA typing was performed by PCR-SSP method. In order to identify the 5-locus Ancestral Extended Haplotypes (AEH), the alleles of HLA-A, -B and -C loci were typed for DNAs with predominant 2-locus haplotypes. The analyses have revealed allele HLA-DRB1*15 as the most predominant allele (Lowest / Highest range: Urali, 14.81 / Malasar, 48.94), followed by the alleles DRB1*10 (Katunayakan, 1.85 / Paliyan, 48.21), DRB1*14 (Paliyan 4.46 / Katunayakan, 40.74), DRB1*12 (Mannan, 1.64 / Katunayakan, 20.37) and DRB1*03 (Mannan, 1.64 / Urali, 29.63). The most frequent DQB1* alleles were DQB1*02 (Paliyan 3.57 / Urali, 23.15), DQB1*05 (Katunayakan, 27.77 / Paliyan 84.82) and DQB1*06 (Malasar, 8.51 / Kuruman, 33.51). The most predominant two-locus haplotypes observed were DRB1*15-DQB1*05, DRB1*10-DQB1*05, DRB1*15-DQB1*06 and DRB1*04-DQB1*05. The present study of HLA immunogenetics of south Indian tribes have revealed the presence of globally shared two and 5-locus haplotypes. Many of these haplotypes were implicated in a number of diseases in south India. We observed the presence of ancestral extended haplotypes (AEHs), hitherto not reported in Indian populations such as, A*68-B*35-C*02-DRB1*15:01-DQB1*05:01, A*24-B*57-C*06-DRB1*04:01-DQB1*05:01 and A*24-B*35-C*02-DRB1*15:01-DQB1*05:02. The dendrogram based phylogenetic analyses have revealed the Caucasian affinity of Urali, palaeo-Mediterranean and Indo-European affinity of Malasar tribes. The presence of globally shared susceptible and protective haplotypes reiterated the mosaic immunogenetic fabric of south Indian tribes.
Collapse
Affiliation(s)
- Nandakumar Rangasamy
- PG & Research Department of Zoology, Periyar EVR College, Tiruchirappalli 620023, Tamil Nadu, India
| | - Rathika Chinniah
- Department of Immunology, Madurai Kamaraj University, Madurai 625021, India
| | - Padma-Malini Ravi
- Department of Immunology, Madurai Kamaraj University, Madurai 625021, India
| | - Murali Vijayan
- Department of Internal Medicine, Texas Tech University Health Sciences Center, Lubbock, Texas 79430, USA
| | | | - Darsa K V
- Department of Environmental Studies, Madurai Kamaraj University, Madurai 625021, Tamil Nadu, India
| | - Sasiharan Pandi
- Department of Immunology, Madurai Kamaraj University, Madurai 625021, India
| | - Vandit Sevak
- Department of Immunology, Madurai Kamaraj University, Madurai 625021, India
| | - Prabhakaran Krishnan
- PG & Research Department of Zoology, Periyar EVR College, Tiruchirappalli 620023, Tamil Nadu, India
| | | |
Collapse
|
7
|
Giriprasad V, Mechenro J, Balamurugan R, Ramakrishna BS. Frequency of HLA celiac disease risk alleles and haplotypes in healthy adults in Tamil Nadu. Indian J Gastroenterol 2019; 38:178-182. [PMID: 31025255 DOI: 10.1007/s12664-019-00947-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/19/2018] [Accepted: 02/13/2019] [Indexed: 02/04/2023]
Abstract
Celiac disease (CeD) occurs only in individuals who are able to express human leukocyte antigens (HLA) DQ2 or DQ8, and these are expressed in nearly a third of healthy people in the West. As the disease is very uncommon in Tamil Nadu, we evaluated the possibility that the relevant genes are infrequent in this population. Four hundred healthy adults without any gastrointestinal abnormalities were recruited from Vellore district of Tamil Nadu. Genomic DNA was extracted from venous blood and amplified by PCR using the allele-specific primers for the following alleles-DQA1*0201, 0301, and 0501 and DQB1*02, 0201, and 0302, which determine the CeD risk haplotypes. Among the 400 healthy adults, the presence of DQ2.5 (DQB1*0201-DQA1*0501) and DQ2.2 (DQB1*02-DQA1*0201) haplotypes was found in 8.25% and 14.25%, respectively. DQ8 (DQB1*0302-DQA1*0301) haplotype was identified in only 3% of healthy individuals. Overall, approximately a quarter of healthy adults in Tamil Nadu had the potential CeD risk haplotypes of HLA DQ2.5, DQ2.2, and DQ8.
Collapse
Affiliation(s)
- Venugopal Giriprasad
- Institute of Gastroenterology, SRM Institutes for Medical Science, Jawaharlal Nehru Road, Vadapalani, Chennai, 600 026, India.,Department of Medical Research, SRM Medical College Hospital and Research Centre, SRM Institute of Science and Technology, Kattankulathur, 603 203, India
| | - John Mechenro
- Institute of Gastroenterology, SRM Institutes for Medical Science, Jawaharlal Nehru Road, Vadapalani, Chennai, 600 026, India.,Department of Medical Research, SRM Medical College Hospital and Research Centre, SRM Institute of Science and Technology, Kattankulathur, 603 203, India
| | - Ramadass Balamurugan
- All India Institute of Medical Sciences, Sijua, Patrapada, Bhubaneswar, 751 019, India
| | - Balakrishnan S Ramakrishna
- Institute of Gastroenterology, SRM Institutes for Medical Science, Jawaharlal Nehru Road, Vadapalani, Chennai, 600 026, India. .,Department of Medical Research, SRM Medical College Hospital and Research Centre, SRM Institute of Science and Technology, Kattankulathur, 603 203, India.
| |
Collapse
|
8
|
Serbezov D, Balabanski L, Hadjidekova S, Toncheva D. Genomics of longevity: recent insights from research on centenarians. BIOTECHNOL BIOTEC EQ 2018. [DOI: 10.1080/13102818.2018.1532317] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022] Open
Affiliation(s)
- Dimitar Serbezov
- Department of Medical Genetics, Faculty of Medicine, Medical University of Sofia, Sofia, Bulgaria
| | - Lubomir Balabanski
- Department of Medical Genetics, Faculty of Medicine, Medical University of Sofia, Sofia, Bulgaria
- Assisted Reproduction Clinic “Dr. Malinov”, Sofia, Bulgaria
| | - Savina Hadjidekova
- Department of Medical Genetics, Faculty of Medicine, Medical University of Sofia, Sofia, Bulgaria
| | - Draga Toncheva
- Department of Medical Genetics, Faculty of Medicine, Medical University of Sofia, Sofia, Bulgaria
- Assisted Reproduction Clinic “Dr. Malinov”, Sofia, Bulgaria
| |
Collapse
|
9
|
Murad H, Jazairi B, Khansaa I, Olabi D, Khouri L. HLA-DQ2 and -DQ8 genotype frequency in Syrian celiac disease children: HLA-DQ relative risks evaluation. BMC Gastroenterol 2018; 18:70. [PMID: 29793442 PMCID: PMC5968552 DOI: 10.1186/s12876-018-0802-2] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/19/2018] [Accepted: 05/16/2018] [Indexed: 12/11/2022] Open
Abstract
Background Celiac disease (CD) is a common autoimmune disease in Syria which manifesting with inflammation of the small intestine and with various extra intestinal symptoms. The disease is associated with human HLA-DQ genes encoding HLA-DQ2 and DQ8 proteins. Methods In this study, 49 children patients of CD and 58 healthy control samples were genotyped for HLA-DQ genes using SSP-PCR technique. Relative risks for different genotypes were also evaluated. Results The DQB1*0201 allele was the most common in the patients (77.6%) followed by DQB1*0302 allele (10.2%). The highest HLA-DQB risk for CD development was found in patients carriers a DQ2.5/DQ8 genotype (1/10), followed by the patients carriers DQ2.5/DQ2.5 (1/12). Conclusion The significant differences in the frequency of HLA-DQ2 and HLA-DQ8 in Syrian patients in compared with controls and relative risks predicted demonstrated the importance role of these alleles in the development of CD in Syrian children patients.
Collapse
Affiliation(s)
- Hossam Murad
- Molecular Biology and Biotechnology Department, Human Genetics Division, Atomic Energy Commission of Syria, P.O. Box 6091, Damascus, Syria.
| | - Batoul Jazairi
- Molecular Biology and Biotechnology Department, Human Genetics Division, Atomic Energy Commission of Syria, P.O. Box 6091, Damascus, Syria
| | - Issam Khansaa
- Molecular Biology and Biotechnology Department, Human Genetics Division, Atomic Energy Commission of Syria, P.O. Box 6091, Damascus, Syria
| | | | | |
Collapse
|
10
|
Padma-Malini R, Rathika C, Ramgopal S, Murali V, Dharmarajan P, Pushkala S, Balakrishnan K. Associations of CTLA4 +49 A/G Dimorphism and HLA-DRB1*/DQB1* Alleles With Type 1 Diabetes from South India. Biochem Genet 2018; 56:489-505. [DOI: 10.1007/s10528-018-9856-7] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2017] [Accepted: 03/21/2018] [Indexed: 11/29/2022]
|
11
|
Yang F, Sun L, Zhu X, Han J, Zeng Y, Nie C, Yuan H, Li X, Shi X, Yang Y, Hu C, Lv Z, Huang Z, Zheng C, Liang S, Huang J, Wan G, Qi K, Qin B, Cao S, Zhao X, Zhang Y, Yang Z. Identification of new genetic variants of HLA-DQB1 associated with human longevity and lipid homeostasis-a cross-sectional study in a Chinese population. Aging (Albany NY) 2018; 9:2316-2333. [PMID: 29129831 PMCID: PMC5723689 DOI: 10.18632/aging.101323] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2017] [Accepted: 11/02/2017] [Indexed: 01/09/2023]
Abstract
Healthy longevity has been an unremitting pursuit of human, but its genetic and the environment causes are still unclear. As longevity population is a good healthy aging model for understanding how the body begin aging and the process of aging, and plasma lipids metabolism and balance is a very important to life maintain and physiologic functional turnover. It is important to explore how the effect of genetic variants associated long-life individuals on lipids metabolism and balance. Therefore, we developed a comparative study based population which contains 2816 longevity and 2819 control. Through whole-exome sequencing and sanger sequencing genotypes, we identified four new single nucleotide polymorphisms of HLA-DQB1(major histocompatibility complex, class II, DQ beta 1), rs41542812 rs1049107 rs1049100 rs3891176(Prange=0.048-2.811×10−8 for allele frequencies), associated with longevity in Chinese Longevity Cohort. Further, by analysis of the longevity-variants linked to blood lipids, we identified HLA-DQB1 rs1049107, T-carriers (PHDL=0.006, OR: 11.277; PTG=9.095×10−7, OR: 0.025; PLDL/HDL=0.047, OR: 1.901) and HLA-DQB1 rs1049100, T-carriers (PTG=1.799×10-6, OR: 0.028) associated with lipid homeostasis in long lived individuals. Our finding showed that longevity and lipid homeostasis were associated with HLA-DQB1 and suggested that immune gene variants could act on both new function of maintaining the homeostasis and anti-aging in longevity.
Collapse
Affiliation(s)
- Fan Yang
- The MOH Key Laboratory of Geriatrics, Beijing Hospital, National Center of Gerontology, Beijing, China.,Graduate School of Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, China
| | - Liang Sun
- The MOH Key Laboratory of Geriatrics, Beijing Hospital, National Center of Gerontology, Beijing, China
| | - Xiaoquan Zhu
- The MOH Key Laboratory of Geriatrics, Beijing Hospital, National Center of Gerontology, Beijing, China
| | - Jing Han
- The MOH Key Laboratory of Geriatrics, Beijing Hospital, National Center of Gerontology, Beijing, China.,Graduate School of Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, China
| | - Yi Zeng
- Center for the Study of Aging and Human Development and Geriatrics Division, Medical School of Duke University, Durham, NC 27708, USA.,Center for Healthy Aging and Development Studies, National School of Development, Peking University, Beijing, China
| | - Chao Nie
- BGI-Shenzhen, Shenzhen, Guangdong, China
| | - Huiping Yuan
- The MOH Key Laboratory of Geriatrics, Beijing Hospital, National Center of Gerontology, Beijing, China
| | - Xiaoling Li
- The MOH Key Laboratory of Geriatrics, Beijing Hospital, National Center of Gerontology, Beijing, China.,Graduate School of Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, China
| | - Xiaohong Shi
- The MOH Key Laboratory of Geriatrics, Beijing Hospital, National Center of Gerontology, Beijing, China
| | - Yige Yang
- The MOH Key Laboratory of Geriatrics, Beijing Hospital, National Center of Gerontology, Beijing, China
| | - Caiyou Hu
- Jiangbing Hospital, Guangxi Zhuang Autonomous Region, Nanning, Guangxi, China
| | - Zeping Lv
- Jiangbing Hospital, Guangxi Zhuang Autonomous Region, Nanning, Guangxi, China
| | - Zezhi Huang
- Office of Longevity Cultural, People's Government of Yongfu County, Yongfu, Guangxi, China
| | - Chenguang Zheng
- Birth Defects Prevention and Control Research Institute, Guangxi Zhuang Autonomous Region Women and Children Health Care Hospital, Nanning, Guangxi, China
| | - Siying Liang
- Genetic Testing Center Qingdao Women and Children's Hospital, Qingdao University, Qingdao, China
| | - Jin Huang
- Department of Obstetrics and Gynecology, Aviation General Hospital of China Medical University, Beijing, China
| | - Gang Wan
- Capital Medical University Affiliated Beijing Ditan Hospital, Beijing, China
| | - Keyan Qi
- The MOH Key Laboratory of Geriatrics, Beijing Hospital, National Center of Gerontology, Beijing, China
| | - Bin Qin
- The MOH Key Laboratory of Geriatrics, Beijing Hospital, National Center of Gerontology, Beijing, China
| | - Suyan Cao
- The MOH Key Laboratory of Geriatrics, Beijing Hospital, National Center of Gerontology, Beijing, China
| | - Xin Zhao
- The MOH Key Laboratory of Geriatrics, Beijing Hospital, National Center of Gerontology, Beijing, China
| | - Yongqiang Zhang
- The MOH Key Laboratory of Geriatrics, Beijing Hospital, National Center of Gerontology, Beijing, China
| | - Ze Yang
- The MOH Key Laboratory of Geriatrics, Beijing Hospital, National Center of Gerontology, Beijing, China.,Graduate School of Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, China
| |
Collapse
|
12
|
Critical amino acid variations in HLA-DQB1* molecules confers susceptibility to Autoimmune Thyroid Disease in south India. Genes Immun 2018; 20:32-38. [PMID: 29307887 DOI: 10.1038/s41435-017-0008-6] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2017] [Revised: 10/10/2017] [Accepted: 10/27/2017] [Indexed: 11/09/2022]
Abstract
The HLA-DQB1* region exhibits complex associations with autoimmune thyroid disease (AITD). AITD patients (Hashimoto's thyroiditis, HT = 180; Graves' disease, GD = 55) and age/sex matched controls (n = 235) were genotyped for DQB1* alleles by PCR-SSP. Alleles DQB1*02:02, *06:03, *06:09, *03:02, and *03:03 showed an increased risk and *02:01, *05:02, and *06:02 showed a protection toward AITD. Multiple sequence alignment was used to find out the amino acid variations within the peptide-binding pockets of susceptible and/or protective DQB1* alleles. We observed susceptible associations for amino acids 'Glu86(P < 0.0007)' and 'Leu87(P < 3.8 × 10-4)' in P1, 'Leu26(P < 4.0 × 10-12)' in P4, 'His9(P < 5.0 × 10-4)' and 'Ala57(P < 3.6 × 10-4)' in P9 toward HT; and 'Gly86(P < 0.0004)' in P1 and 'Asp57(P < 1.9 × 10-4)' in P9 towards GD. Protective associations were observed for amino acids 'Ala86(P < 8.2 × 10-6)' and 'Tyr87(P < 0.0003)' in P1, 'Gly26(P < 4.9 × 10-5)' and 'Ser74(P < 4.9 × 10-5)' in P4, 'Phe9(P < 0.0007)' and 'Ser57(P < 0.0016)' in P9 towards HT. Thus, the present study revealed that DQB1* alleles and putative amino acid residues play an important role in susceptibility toward AITD in south India.
Collapse
|
13
|
Lisa A, Astolfi P, Zei G, Tentoni S. Consanguinity and late fertility: spatial analysis reveals positive association patterns. Ann Hum Genet 2014; 79:37-45. [PMID: 25441534 DOI: 10.1111/ahg.12092] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2014] [Accepted: 10/02/2014] [Indexed: 12/15/2022]
Abstract
The role of consanguinity on human complex traits is an important and controversial issue. In this work we focused on the Sardinian population and examined the effect of consanguineous unions on late female fertility. During the last century the island has been characterized by a high incidence of marriages between relatives, favoured by socio economic conditions and geographical isolation, and by high fertility despite a widespread tendency to delay reproduction. Through spatial analysis techniques, we explored the geographical heterogeneity of consanguinity and late fertility, and identified in Central-Eastern Sardinia a common area with an excess of both traits, where the traits are positively associated. We found that their association did not significantly affect women's fertility in the area, despite the expected negative role of both traits. Intriguingly, this critical zone corresponds well to areas reported by previous studies as being peculiar for a high frequency of centenarians and for lower risk in pregnancy outcome. The proposed approach can be generally exploited to identify target populations on which socioeconomic, biodemographic and genetic data can be collected at the individual level, and deeper analyses carried out to disentangle the determinants of complex biological traits and to investigate their association.
Collapse
Affiliation(s)
- Antonella Lisa
- Istituto di Genetica Molecolare, Consiglio Nazionale delle Ricerche, via Abbiategrasso 207, 27100, Pavia, Italy
| | | | | | | |
Collapse
|
14
|
Lemin AJ, Darke C. Prevalence of HLA-DQA1 alleles and haplotypes in blood donors resident in Wales. Int J Immunogenet 2014; 41:480-3. [DOI: 10.1111/iji.12154] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2014] [Revised: 09/08/2014] [Accepted: 09/25/2014] [Indexed: 11/30/2022]
Affiliation(s)
- A. J. Lemin
- Welsh Transplantation and Immunogenetics Laboratory; Welsh Blood Service; Pontyclun Wales UK
| | - C. Darke
- Welsh Transplantation and Immunogenetics Laboratory; Welsh Blood Service; Pontyclun Wales UK
| |
Collapse
|
15
|
Griffin P, Michel JJ, Huysman K, Logar AJ, Vallejo AN. Integration of immunity with physical and cognitive function in definitions of successful aging. Aging Dis 2012; 3:34-50. [PMID: 22500270 PMCID: PMC3320803] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2012] [Revised: 02/27/2012] [Accepted: 02/27/2012] [Indexed: 05/31/2023] Open
Abstract
Studies comparing chronologically "young" versus "old" humans document age-related decline of classical immunological functions. However, older adults aged ≥65 years have very heterogeneous health phenotypes. A significant number of them are functionally independent and are surviving well into their 8(th)-11(th) decade life, observations indicating that aging or old age is not synonymous with immune incompetence. While there are dramatic age-related changes in the immune system, not all of these changes may be considered detrimental. Here, we review evidences for novel immunologic processes that become elaborated with advancing age that complement preserved classical immune functions and promote immune homeostasis later in life. We propose that elaboration such of late life immunologic properties is indicative of beneficial immune remodeling that is an integral component of successful aging, an emerging physiologic construct associated with similar age-related physiologic adaptations underlying maintenance of physical and cognitive function. We suggest that a systems approach integrating immune, physical, and cognitive functions, rather than a strict immunodeficiency-minded approach, will be key towards innovations in clinical interventions to better promote protective immunity and functional independence among the elderly.
Collapse
Affiliation(s)
- Patricia Griffin
- Department of Pediatrics, University of Pittsburgh School of Medicine; and Children’s Hospital of Pittsburgh, University of Pittsburgh Medical Center, Pittsburgh, PA 15224, USA
| | - Joshua J. Michel
- Department of Pediatrics, University of Pittsburgh School of Medicine; and Children’s Hospital of Pittsburgh, University of Pittsburgh Medical Center, Pittsburgh, PA 15224, USA
| | - Kristy Huysman
- Department of Pediatrics, University of Pittsburgh School of Medicine; and Children’s Hospital of Pittsburgh, University of Pittsburgh Medical Center, Pittsburgh, PA 15224, USA
| | - Alison J. Logar
- Department of Pediatrics, University of Pittsburgh School of Medicine; and Children’s Hospital of Pittsburgh, University of Pittsburgh Medical Center, Pittsburgh, PA 15224, USA
| | - Abbe N. Vallejo
- Department of Pediatrics, University of Pittsburgh School of Medicine; and Children’s Hospital of Pittsburgh, University of Pittsburgh Medical Center, Pittsburgh, PA 15224, USA
- Department of Immunology, the Pittsburgh Cancer Institute, and the McGowan Institute, University of Pittsburgh School of Medicine, Pittsburgh, PA 15224, USA
| |
Collapse
|
16
|
Erriu M, Sanna S, Nucaro A, Orrù G, Garau V, Montaldo C. HLA-DQB1 Haplotypes and their Relation to Oral Signs Linked to Celiac Disease Diagnosis. Open Dent J 2011; 5:174-8. [PMID: 22135701 PMCID: PMC3227877 DOI: 10.2174/1874210601105010174] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2011] [Revised: 08/22/2011] [Accepted: 08/30/2011] [Indexed: 01/06/2023] Open
Abstract
Objectives: Celiac disease (CD) is an autoimmune disorder that can be divided into typical and atypical forms. Atypical forms can show extraintestinal manifestations among which oral signs are very frequent. Considering that the pathogenesis of CD is related to a positivity to specific HLA-DQB1 haplotypes, we tested whether the presence of the HLA-DQB1*02 allele could be a hypothetical cause of the development of oral manifestations. Subjects and Methods: For this study was been examined the oral condition of 98 Sardinian patients, all affected by CD and all on a gluten-free diet for at least 1 year. Then was been determined each patient’s HLA-DQB1 haplotype and compared these results with clinical information. Results: The statistical analysis evidenced that the absence of the HLA-DQB1*02 allele predisposes to oral manifestations such as dental enamel defects (DED) and recurrent aphthous stomatitis (RAS) (Pvalue=5.98x10-05, OR = 0.23, CI: (0.10 - 0.45) per each copy of the HLA allele). Conclusions: These results showed that the presence of the HLA-DQB1*02 allele influences the development of oral signs in a dose-dependent manner and also how the HLA haplotype connected to oral signs could have a fundamental role for the diagnosis of atypical forms of CD.
Collapse
Affiliation(s)
- Matteo Erriu
- Department of Surgery and Odontostomatological Sciences, University of Cagliari. Cagliari
| | | | | | | | | | | |
Collapse
|
17
|
Abstract
The ageing process is very complex. Human longevity is a multifactorial trait which is determined by genetic and environmental factors. Twin and family studies imply that up to 25% of human lifespan is heritable. The longevity gene candidates have generally fallen into the following categories: inflammatory and immune-related factors, stress response elements, mediators of glucose and lipid metabolism, components of DNA repair and cellular proliferation and mitochondrial DNA haplogroups. Because of the central role of HLA molecules in the development of protective immunity and the extraordinary degree of polymorphism of HLA genes, many studies have addressed the possible impact of these genes on human longevity. Most of the data available so far demonstrated a possible role of HLA class II specificities in human longevity but definitive evidence has remained elusive. Although the data are limited and controversial, it has been hypothesized that longevity could be associated with cytokine gene polymorphisms correlating with different levels of cytokine production, thereby modulating immune responses in health and disease. Because of the essential role of cytokines in immune responses, the regulation of cytokine gene expression and their polymorphic nature, the genetic variations of these loci with functional significance could be appropriate immunogenetic candidate markers implicated in the mechanism of successful ageing and longevity. In addition, several other genes such as Toll-like receptor genes, Cycloxygenases (COX)/Lipoxygenases (LOX), CCR5, NK receptor genes and MBL2 have been assessed as a possible biomarkers associated with ageing. This review will summarize the data on the role of these immune genes in human longevity.
Collapse
Affiliation(s)
- E Naumova
- Department of Clinical Immunology, University Hospital Alexandovska, Sofia, Bulgaria.
| | | | | |
Collapse
|
18
|
Castelli EC, Mendes-Junior CT, Veiga-Castelli LC, Pereira NF, Petzl-Erler ML, Donadi EA. Evaluation of computational methods for the reconstruction of HLA haplotypes. ACTA ACUST UNITED AC 2010; 76:459-66. [DOI: 10.1111/j.1399-0039.2010.01539.x] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
|
19
|
Listì F, Caruso C, Colonna-Romano G, Lio D, Nuzzo D, Candore G. HLA and KIR frequencies in Sicilian Centenarians. Rejuvenation Res 2010; 13:314-8. [PMID: 20426625 DOI: 10.1089/rej.2009.0984] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Several studies suggest that human longevity appears to be linked inextricably with optimal functioning of the immune system, suggesting that specific genetic determinants may reside in loci that regulate the immune response, as human leukocyte antigen (HLA) and killer cell immunoglobulin-like receptor (KIR) genes. It has been suggested that longevity is associated with positive selection of alleles (i.e., HLA-DR11) or haplotypes (i.e., HLA-B8,DR3) that confer resistance to infectious disease(s). On the other hand, the cytolytic activity of natural killer (NK) cells is controlled by activating and inhibitory cell-surface receptors, including KIR. The genetic diversity of the KIR loci with respect to successful aging has been analyzed only in one study performed in the Irish population. Although two KIR genes (2DS3, 2DL5) displayed an initial increased frequency in the aged group, the significance of this association was lost when repeated in a second cohort. We have evaluated by polymerase chain reaction-sequence-specific primers (PCR-SSP) HLA-DRB1 and KIR receptors/HLA ligands frequencies in centenarians and controls from Sicily. Our results demonstrate an increase of the HLA DRB1*18 allele in male centenarians (p = 0.0266, after Bonferroni correction). Concerning KIR, no significant difference was observed after Bonferroni correction. However, our findings suggest that HLA/KIR/longevity associations are population specific, being heavily affected by the population-specific genetic and environmental history. This kind of study is important to better understand aging and longevity, hence enhancing the planning of antiaging strategies.
Collapse
Affiliation(s)
- Florinda Listì
- Immunosenescence Unit, Department of Pathobiology and Biomedical Methodologies, University of Palermo, Palermo, Italy
| | | | | | | | | | | |
Collapse
|
20
|
Buffa R, Floris G, Lodde M, Cotza M, Marini E. Nutritional status in the healthy longeval population from Sardinia (Italy). J Nutr Health Aging 2010; 14:97-102. [PMID: 20126955 DOI: 10.1007/s12603-010-0018-9] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
OBJECTIVES The aim of this study was to evaluate sex- and age-related variations of the nutritional status in the aged population of central Sardinia, a geographical area with a high frequency of long-lived people, particularly men. DESIGN The sample consisted of 200 subjects over 70 years of age (men: N= 100, age= 81.0 +/- 7.0 years; women: N= 100, age= 81.5 +/- 7.3 years). SETTING Orroli (central Sardinia, Italy). MEASUREMENTS Mini nutritional assessment (MNA) and bioelectrical impedance vector analysis (BIVA) were used to evaluate nutritional status and body composition. RESULTS The indicators revealed a generally good nutritional status. The MNA results (men: 24.6 +/- 2.2; women: 23.4 +/- 2.5) showed that 64.1% of the subjects had a normal nutritional status and only a small proportion (1.2%) could be classified as malnourished. BIVA showed that most subjects (74.2%) were normal, while the prevalence of low body cell mass was 10.7% and that of dehydration 11.2%. According to the MNA, the nutritional status was significantly better in the men. Almost three-quarters of the men (73.1%) were well nourished vs. half of the women (50.6%). A worsening of the nutritional status with age was observed. The proportion of malnourished individuals, as assessed by MNA, increased from 0% to 9.1% from 70-79 to > 90 years. CONCLUSIONS With respect to their contemporaries from other regions, the elderly of Orroli presented a better nutritional status, a similar worsening with age and generally higher sexual dimorphism.
Collapse
Affiliation(s)
- R Buffa
- Department of Experimental Biology, University of Cagliari, Monserrato (Cagliari), Cagliari, Italy
| | | | | | | | | |
Collapse
|
21
|
Genetic association of HLA DQB1 with CD4+CD25+(high) T-cell apoptosis in type 1 diabetes. Genes Immun 2009; 10:334-40. [PMID: 19295543 DOI: 10.1038/gene.2009.14] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Type 1 diabetes (T1D) has a strong genetic component and the major locus lies in the HLA DQB1 region. We found earlier an increased apoptosis with decreased viability and function of the CD4+CD25+(high) T-cell subset (Treg) in human subjects with recent-onset T1D and in multiple autoantibody-positive, high at-risk individuals. Tregs normally inhibit or delay onset of T1D in animal models and increased Treg apoptosis could bring on or accelerate disease from effector T-cell-mediated destruction of insulin-producing beta cells. In this study, we test the hypothesis that HLA DQB1 genotypes are associated with increased CD4+CD25+(high) T-cell apoptosis. HLA DQ-based genetic risk status was significantly associated with CD4+CD25+(high) T-cell apoptosis, after adjustment for age, gender and phenotypic status (n=83, F=4.04 (d.f.=3), P=0.01). Unaffected, autoantibody-negative high risk HLA DQB1 control subjects showed increased CD4+CD25+(high) apoptosis levels compared with low risk HLA DQB1 control subjects (n=26, P=0.002), confirming that the association precedes disease. The association of specific HLA DQB1 genotypes with Treg apoptosis was also tested, showing significance for HLA DQB1*0302, DQB1*0201 and HLA DQB1*0602 alleles. Our study shows an association of HLA DQB1 genotypes with CD4+CD25+(high) T-cell apoptosis, which implicates CD4+CD25+(high) T-cell apoptosis as a new intermediate trait for T1D.
Collapse
|
22
|
Abstract
Studies performed on various experimental model systems indicate that genetic interventions can increase longevity, even if in a highly protected laboratory condition. Generally, such interventions required partial or complete switching off of the gene and inhibiting the activity of its gene products, which normally have other well-defined roles in metabolic processes. Overexpression of some genes, such as stress response and antioxidant genes, in some model systems also extends their longevity. Such genetic interventions may not be easily applicable to humans without knowing their effects on human growth, development, maturation, reproduction and other characteristics. Studies on the association of single nucleotide polymorphisms and multiple polymorphisms (haplotype) in genes with human longevity have identified several genes whose frequencies increase or decrease with age. Whether genetic redesigning can be achieved in the wake of numerous and complex epigenetic factors that effectively determine the life course and the life span of an individual still appears to be a 'mission impossible'.
Collapse
Affiliation(s)
- S I S Rattan
- Laboratory of Cellular Ageing, Department of Molecular Biology, University of Aarhus, Aarhus, Denmark.
| | | |
Collapse
|