scholarly journals NPPA promoter hypomethylation predicts central obesity development: a prospective longitudinal study in Chinese adults

Obesity Facts ◽  
2021 ◽  
Author(s):  
Jing Li ◽  
Jinhua Zhu ◽  
Qiu Zhang ◽  
Linan Chen ◽  
Shengqi Ma ◽  
...  
Keyword(s):  
Dna Methylation ◽  
Central Obesity ◽  
Molecular Mechanisms ◽  
Permutation Test ◽  
Chinese Adults ◽  
Cross Sectional ◽  
Prospective Longitudinal Study ◽  
Targeted Bisulfite Sequencing ◽  
Prospective Longitudinal

Introduction: Atrial natriuretic peptide (ANP) plays a potential role in obesity with unclear molecular mechanisms. The objective of this study was to examine the association between its coding gene (NPPA) methylation and obesity. Methods: Peripheral blood DNA methylation of NPPA promoter was quantified at baseline by targeted bisulfite sequencing for 2,497 community members (mean aged 53 years, 38% men) in the Gusu cohort. Obesity was repeatedly assessed by body mass index (BMI) and waist circumference (WC) at baseline and follow-up examinations. The cross-sectional, longitudinal, and prospective associations between NPPA promoter methylation and obesity were examined. Results: Of the 9 CpG loci assayed, DNA methylation levels at 6 CpGs were significantly lower in participants with central obesity than those without (all P<0.05 for permutation test). These CpG methylation levels at baseline were also inversely associated with dynamic changes in BMI or WC during follow-up (all P<0.05 for permutation test). After an average 4 years of follow-up, hypermethylation at the 6 CpGs (CpG2 located at Chr1: 11908348, CpG3 located at Chr1:11908299, CpG4 located at Chr1:11908200, CpG5 located at Chr1:11908182, CpG6 located at Chr1:11908178, and CpG8 located at Chr1:11908165) were significantly associated with a lower risk of incident central obesity (all P<0.05 for permutation test). Conclusions: Hypomethylation at NPPA promoter was associated with increased future risk of central obesity in Chinese adults. Aberrant DNA methylation of the NPPA gene may participate in the mechanisms of central obesity.

scholarly journals A prospective longitudinal study shows putamen volume is associated with moderate amphetamine use and resultant cognitive impairments

2020 ◽  
Author(s):  
Keith M Kendrick ◽  
Joerg Daumann ◽  
Daniel Wagner ◽  
Philip Koester ◽  
Marc Tittgemeyer ◽  
...  
Keyword(s):  
Longitudinal Study ◽  
Cognitive Functioning ◽  
Verbal Memory ◽  
Memory Performance ◽  
Public Health Issue ◽  
Initial Examination ◽  
Cross Sectional ◽  
Prospective Longitudinal Study ◽  
Prospective Longitudinal

AbstractBackgroundAmphetamine-type stimulants (ATS) have become a critical public health issue. Animal models have indicated a clear neurotoxic potential of ATSs. In humans, chronic use has been associated with cognitive deficits and structural brain abnormalities. However, cross-sectional retrospective designs in chronic users cannot truly determine the causal direction of the effects.MethodsIn a prospective-longitudinal study design cognitive functioning and brain structure were assessed at baseline and at 12-months follow-up in occasional ATS users (cumulative lifetime use <10 units at baseline).ResultsExamination of change-scores between the initial examination and follow-up revealed declined verbal memory performance and putamen volume in users with high relative to low interim ATS exposure. In the entire sample interim ATS use, memory decline and putamen volume reductions were strongly associated.ConclusionsThe present findings support the hypothesis that ATS use is associated with deficient dorsal striatal morphology which might reflect alterations in dopaminergic pathways. More importantly, these findings strongly suggest that even occasional, low-dose ATS use disrupts striatal integrity and cognitive functioning.

Old Age and Loneliness: Cross-sectional and Longitudinal Analyses in the Tampere Longitudinal Study on Aging

2004 ◽  
Vol 23 (2) ◽  
pp. 157-168 ◽  
Author(s):  
Marja Jylhä
Keyword(s):  
Longitudinal Study ◽  
Age Groups ◽  
Population Based ◽  
Household Composition ◽  
Older Age ◽  
Cross Sectional ◽  
Prospective Longitudinal Study ◽  
Sectional Analysis ◽  
Prospective Longitudinal

ABSTRACTThe purpose of this study was to examine whether older age is associated with increasing loneliness in people aged 60 and over. Data came from TamELSA, a population-based prospective longitudinal study in Tampere, Finland. The follow-up time was 20 years. Loneliness was measured by a single question – “Do you feel lonely?“ – with the possible answers often, sometimes, or never. Cross-sectional analysis showed that the percentage of subjects feeling lonely increased toward older age groups, but in a multivariate analysis, only household composition and social participation were independently associated with loneliness. Longitudinal analysis showed that loneliness increased with higher age. Over a 10-year period, loneliness increased most in those who, at baseline, were married and living alone with their spouse. In conclusion, only a minority of older people continuously suffer from loneliness. Loneliness does increase with age, not because of age per se, but because of increasing disability and decreasing social integration.

scholarly journals A prospective longitudinal study shows putamen volume is associated with moderate amphetamine use and resultant cognitive impairments

2021 ◽  
Vol 1 (1) ◽  
pp. 3-12
Author(s):  
Keith M Kendrick ◽  
Joerg Daumann ◽  
Daniel Wagner ◽  
Philip Koester ◽  
Marc Tittgemeyer ◽  
...  
Keyword(s):  
Longitudinal Study ◽  
Cognitive Functioning ◽  
Verbal Memory ◽  
Brain Structure ◽  
Public Health Issue ◽  
Initial Examination ◽  
Cross Sectional ◽  
Prospective Longitudinal Study ◽  
Prospective Longitudinal

Abstract Background Amphetamine-type stimulants (ATS) have become a critical public health issue. Animal models have indicated a clear neurotoxic potential of ATSs. In humans, chronic use has been associated with cognitive deficits and structural brain abnormalities. However, cross-sectional retrospective designs in chronic users cannot truly determine the causal direction of the effects. Objective To prospectively determine effects of occasional ATS use on cognitive functioning and brain structure. Methods In a prospective longitudinal study design, cognitive functioning and brain structure were assessed at baseline and at 12-month follow-up in occasional ATS users (cumulative lifetime use &lt;10 units at baseline). Results Examination of change scores between the initial examination and follow-up revealed declined verbal memory performance and putamen volume in users with high relative to low interim ATS exposure. In the entire sample, interim ATS use, memory decline, and putamen volume reductions were strongly associated. Conclusions The present findings support the hypothesis that ATS use is associated with deficient dorsal striatal morphology that might reflect alterations in dopaminergic pathways. More importantly, these findings strongly suggest that even occasional, low-dose ATS use disrupts striatal integrity and cognitive functioning.

Prospective longitudinal study of depression and anosognosia in Alzheimer's disease

1997 ◽  
Vol 171 (1) ◽  
pp. 47-52 ◽  
Author(s):  
Sergio E. Starkstein ◽  
Erán Chemerinski ◽  
Liliana Sabe ◽  
Gabriela Kuzis ◽  
Gustavo Petracca ◽  
...  
Keyword(s):  
Alzheimer’S Disease ◽  
Alzheimer's Disease ◽  
Major Depression ◽  
Cognitive Status ◽  
Initial Evaluation ◽  
Consecutive Series ◽  
Psychiatric Interview ◽  
Prospective Longitudinal Study ◽  
Prospective Longitudinal

BackgroundThe aim was to examine the longitudinal evolution of depression and anosognosia in patients with probable Alzheimer's disease (AD).MethodSixty-two of a consecutive series of 116 AD patients that were examined with a structured psychiatric interview had a follow-up evaluation between one and two years after the initial evaluation.ResultsAt the initial evaluation 19% of the 62 patients had major depression, 34% had dysthymia, and 47% were not depressed. After a mean follow-up of 16 months, 58% of patients with major depression at the initial evaluation were still depressed, whereas only 28% of patients with initial dysthymia and 21% of the non-depressed patients were depressed at follow-up. During the follow-up period, all three groups showed similar declines in cognitive status and activities of daily living. At the initial evaluation, 39% of the patients had anosognosia, and there was a significant increment of anosognosia during the follow-up period.ConclusionsWhile dysthymia in AD is a brief emotional disorder, major depression is a longer-lasting mood change. Anosognosia is another prevalent disorder among AD patients, and increases with the progression of the illness.

scholarly journals Cognitive Complaints in Survivors of Breast Cancer After Chemotherapy Compared With Age-Matched Controls: An Analysis From a Nationwide, Multicenter, Prospective Longitudinal Study

2017 ◽  
Vol 35 (5) ◽  
pp. 506-514 ◽  
Author(s):  
Michelle C. Janelsins ◽  
Charles E. Heckler ◽  
Luke J. Peppone ◽  
Charles Kamen ◽  
Karen M. Mustian ◽  
...  
Keyword(s):  
Breast Cancer ◽  
Cognitive Impairment ◽  
Cognitive Function ◽  
Reading Ability ◽  
Menopausal Status ◽  
Prospective Longitudinal Study ◽  
Cognitive Difficulties ◽  
Community Oncology ◽  
Prospective Longitudinal

Purpose Cancer-related cognitive impairment is an important problem for patients with breast cancer, yet its trajectory is not fully understood. Some previous cancer-related cognitive impairment research is limited by heterogeneous populations, small samples, lack of prechemotherapy and longitudinal assessments, use of normative data, and lack of generalizability. We addressed these limitations in a large prospective, longitudinal, nationwide study. Patients and Methods Patients with breast cancer from community oncology clinics and age-matched noncancer controls completed the Functional Assessment of Cancer Therapy-Cognitive Function (FACT-Cog) at prechemotherapy and postchemotherapy and at a 6-month follow-up as an a priori exploratory aim. Longitudinal models compared FACT-Cog scores between patients and controls at the three assessments and adjusted for age, education, race, menopausal status, and baseline reading ability, anxiety, and depressive symptoms. A minimal clinically important difference cutoff determined percentages of impairment over time. Results Of patients, 581 patients with breast cancer (mean age, 53 years; 48% anthracycline-based regimens) and 364 controls (mean age, 53 years) were assessed. Patients reported significantly greater cognitive difficulties on the FACT-Cog total score and four subscales from prechemotherapy to postchemotherapy compared with controls as well as from prechemotherapy to 6-month follow-up (all P < .001). Increased baseline anxiety, depression, and decreased cognitive reserve were significantly associated with lower FACT-Cog total scores. Treatment regimen, hormone, or radiation therapy was not significantly associated with FACT-Cog total scores in patients from postchemotherapy to 6-month follow-up. Patients were more likely to report a clinically significant decline in self-reported cognitive function than were controls from prechemotherapy to postchemotherapy (45.2% v 10.4%) and from prechemotherapy to 6-month follow-up (36.5% v 13.6%). Conclusion Patients with breast cancer who were treated in community oncology clinics report substantially more cognitive difficulties up to 6 months after treatment with chemotherapy than do age-matched noncancer controls.

scholarly journals The Relationship between Body Mass Index, Obesity, and LINE-1 Methylation: A Cross-Sectional Study on Women from Southern Italy

2021 ◽  
Vol 2021 ◽  
pp. 1-7
Author(s):  
Andrea Maugeri ◽  
Martina Barchitta ◽  
Roberta Magnano San Lio ◽  
Giuliana Favara ◽  
Claudia La Mastra ◽  
...  
Keyword(s):  
Body Mass Index ◽  
Dna Methylation ◽  
Body Mass ◽  
Methylation Level ◽  
Molecular Mechanisms ◽  
Smoking Status ◽  
Cross Sectional Study ◽  
Sectional Study ◽  
Cross Sectional ◽  
The Relationship

Uncovering the relationship between body mass index (BMI) and DNA methylation could be useful to understand molecular mechanisms underpinning the effects of obesity. Here, we presented a cross-sectional study, aiming to evaluate the association of BMI and obesity with long interspersed nuclear elements (LINE-1) methylation, among 488 women from Catania, Italy. LINE-1 methylation was assessed in leukocyte DNA by pyrosequencing. We found a negative association between BMI and LINE-1 methylation level in both the unadjusted and adjusted linear regression models. Accordingly, obese women exhibited lower LINE-1 methylation level than their normal weight counterpart. This association was confirmed after adjusting for the effect of age, educational level, employment status, marital status, parity, menopause, and smoking status. Our findings were in line with previous evidence and encouraged further research to investigate the potential role of DNA methylation markers in the management of obesity.

scholarly journals Methods of conduct and reporting of living systematic reviews: a protocol for a living methodological survey

F1000Research ◽  
2019 ◽  
Vol 8 ◽  
pp. 221 ◽  
Author(s):  
Assem M. Khamis ◽  
Lara A. Kahale ◽  
Hector Pardo-Hernandez ◽  
Holger J. Schünemann ◽  
Elie A. Akl
Keyword(s):  
Systematic Review ◽  
Systematic Reviews ◽  
Evidence Synthesis ◽  
Cochrane Library ◽  
Cross Sectional Survey ◽  
Systematic Review Methodology ◽  
Cross Sectional ◽  
Prospective Longitudinal ◽  
Over Time

Background: The living systematic review (LSR) is an emerging approach for improved evidence synthesis that uses continual updating to include relevant new evidence as soon as it is published. The objectives of this study are to: 1) assess the methods of conduct and reporting of living systematic reviews using a living study approach; and 2) describe the life cycle of living systematic reviews, i.e., describe the changes over time to their methods and findings. Methods: For objective 1, we will begin by conducting a cross-sectional survey and then update its findings every 6 months by including newly published LSRs. For objective 2, we will conduct a prospective longitudinal follow-up of the cohort of included LSRs. To identify LSRs, we will continually search the following electronic databases: Medline, EMBASE and the Cochrane library. We will also contact groups conducting LSRs to identify eligible studies that we might have missed. We will follow the standard systematic review methodology for study selection and data abstraction. For each LSR update, we will abstract information on the following: 1) general characteristics, 2) systematic review methodology, 3) living approach methodology, 4) results, and 5) editorial and publication processes. We will update the findings of both the surveys and the longitudinal follow-up of included LSRs every 6 months. In addition, we will identify articles addressing LSR methods to be included in an ‘LSR methods repository’. Conclusion: The proposed living methodological survey will allow us to monitor how the methods of conduct, and reporting as well as the findings of LSRs change over time. Ultimately this should help with ensuring the quality and transparency of LSRs.

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