Differences in Fecal Microbiota in Different European Study Populations in Relation to Age, Gender, and Country: a Cross-Sectional Study

ABSTRACT A cross-sectional study on intestinal microbiota composition was performed on 230 healthy subjects at four European locations in France, Germany, Italy, and Sweden. The study participants were assigned to two age groups: 20 to 50 years (mean age, 35 years; n = 85) and >60 years (mean age, 75 years; n = 145). A set of 14 group- and species-specific 16S rRNA-targeted oligonucleotide probes was applied to the analysis of fecal samples by fluorescence in situ hybridization coupled with flow cytometry. Marked country-age interactions were observed for the German and Italian study groups. These interactions were inverse for the predominant bacterial groups Eubacterium rectale-Clostridium coccoides and Bacteroides-Prevotella. Differences between European populations were observed for the Bifidobacterium group only. Proportions of bifidobacteria were two- to threefold higher in the Italian study population than in any other study group, and this effect was independent of age. Higher proportions of enterobacteria were found in all elderly volunteers independent of the location. Gender effects were observed for the Bacteroides-Prevotella group, with higher levels in males than in females. In summary, age-related differences in the microbiota makeup were detected but differed between the study populations from the four countries, each showing a characteristic colonization pattern.

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Age-related trends in lipid levels: a large-scale cross-sectional study of the general Chinese population

BMJ Open ◽

10.1136/bmjopen-2019-034226 ◽

2020 ◽

Vol 10 (3) ◽

pp. e034226

Author(s):

Lei Feng ◽

Shiyan Nian ◽

Zongwu Tong ◽

Ying Zhu ◽

Ying Li ◽

...

Keyword(s):

Chinese Population ◽

Age Groups ◽

Density Lipoprotein ◽

Cross Sectional Study ◽

Lipoprotein Cholesterol ◽

Atherosclerotic Cardiovascular Disease ◽

Sectional Study ◽

Lipid Levels ◽

Cross Sectional ◽

Age Related

ObjectivesThis study aimed to investigate the dynamic trends in total cholesterol (TC), triglyceride (TG), high-density lipoprotein cholesterol (HDL-C) and low-density lipoprotein cholesterol (LDL-C) levels with ageing.DesignA Chinese population-based cross-sectional study.SettingA physical examination centre of a general hospital.ParticipantsAdult subjects (178 167: 103 461 men and 74 706 women) without a known medical history or treatments that affect lipid metabolism.Main outcome measuresDynamic trends in the above-mentioned lipid parameters with ageing were explored; turning points of age were established using age stratification and validated by fitted multivariate linear regression modelling.ResultsAge was found to be an independent factor extensively associated with lipid levels in both sexes when adjusted for serum glucose, body mass index, lifestyle, drinking and smoking. Age was positively associated with TC, logarithm-transformed TG (LnTG) and LDL-C levels in men ≤40, ≤40 and ≤60 years old (yo) and in women ≤60, ≤70 and ≤60 yo, respectively. Conversely, age correlated negatively with TC, LnTG and LDL-C levels in men ≥61, ≥41 and ≥61 yo and in women ≥61, ≥71 and ≥61 yo, respectively. TC, TG and LDL-C levels in women were initially lower than those in men but surpassed those in men in 51–55, 61–65 and 51–55 yo age groups. The trends in HDL-C levels with age were relatively irregular, although HDL-C levels in women were higher than in men for all age groups.ConclusionsThe definition of dyslipidaemia, the atherosclerotic cardiovascular disease risk assessment and the initiation/goals of statin therapy should fully consider age-related trends in lipid levels and sex differences.

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Age-Related Value of Anti-Mullerian Hormone

Iraqi National Journal of Medicine ◽

10.37319/iqnjm.2.2.6 ◽

2020 ◽

pp. 111-116

Author(s):

Doaa Noor ◽

Rasmiyah Al-Midhachi ◽

Ghufran jaafar ◽

Maysoon Sharief

Keyword(s):

Age Groups ◽

Negative Relationship ◽

Cross Sectional Study ◽

Sectional Study ◽

Cross Sectional ◽

Infertile Women ◽

Age Related ◽

Treatment Objective ◽

The Mean ◽

Child Hospital

Background: There is a correlation between anti-mullerian hormone (AMH) and the age when it becomes undetectable during menopause. The AMH immunoassay has been widely estimated in clinical practice to assist in reproduction and infertility treatment. Objective: To investigate the normal level of serum anti-mullerian hormone (AMH) in relation to women’s age in Basra. Patients and Methods: Cross-sectional study was carried out in Basra Maternity and Child Hospital from January 2018 to September 2019. Serum AMH levels were estimated for 975 women aged 15–50 years. They were classified into 7 age groups:15–20, 20–25, 25–30, 30–35, 35–40, 40–45 and 45–50 years. Serum AMH and FSH levels were determined by commercial enzyme-linked immunoassay. Results: Negative relationship was noticed between AMH concentration and age. The mean AMH levels for the age groups 1, 2, 3, 4, 5, 6 and 7 were 4.9 ng/ml, 4.25ng/ml, 3.27 ng/ml, 2.43ng/ml, 2.17ng/ml, 1.95ng/ml and 0.9ng/ml respectively. Conclusions: This study recorded normal levels of AMH in women in Basra. These levels can be considered for the medical treatment of infertile women. Keywords: age, anti-mullerian hormone, FSH.

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CONCENTRATION OF THE SERUM TGF-BETA1 IN HEALTHY ADULT PEOPLE

Journal of Medicine and Pharmacy ◽

10.34071/jmp.2014.4_5.12 ◽

2014 ◽

pp. 90-93

Author(s):

Van Tuan Nguyen ◽

Tam Vo ◽

Bui Bao Hoang

Keyword(s):

Transforming Growth Factor ◽

Healthy Adult ◽

Age Groups ◽

Elevated Serum ◽

Cross Sectional Study ◽

Healthy People ◽

Sectional Study ◽

Transforming Growth Factor Beta1 ◽

Cross Sectional ◽

And Gender

Elevated serum Transforming growth factor-beta1 (TGF-beta1) levels have been linked to tissue fibrosis including chronic kidney disease. Objectives: (1) Investigate serum TGF-beta1 levels in healthy adult people and (2) Examined the relation between serum TGF-beta1 level and gender, age, body mass index (BMI). Method: A cross-sectional study. TGF-beta1 were quantified by ELISA. Results: Levels of serum TGF-beta1 in healthy people were 13,45 ± 7,17 ng/mL mL (0,59 - 33,10 ng/mL). There are no difference of serum TGF-beta1 levels between men and women, between the age groups (<40 years, 40 to < 60 years and ≥ 60 years), between BMI groups < 23 and BMI group ≥ 23. Key words: TGF-beta1, healthy people

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The Prevalence of Insecticide Treated Net/malaria :cross section study (Preprint)

10.2196/preprints.16825 ◽

2019 ◽

Author(s):

Chanda Chalela

Keyword(s):

Study Design ◽

Age Groups ◽

Cross Sectional Study ◽

Malaria Prevalence ◽

Malaria Patient ◽

P Value ◽

Sectional Study ◽

Cross Sectional ◽

Itn Use ◽

Structured Questionnaire

BACKGROUND ABSTRACT Introduction a study on prevalence of ITN use was carried out in Buchi community Kitwe Zambia from August to October 2019 OBJECTIVE Prevalence of ITN in BUchi METHODS Methodology: This was a cross sectional study design. A structured questionnaire was used to ascertain ownership and utilization and oral interviews, 200 households were targeted 844 individual covered across the 200 households. Data was analyzed with SPSS version 23. RESULTS ABSTRACT Introduction a study on prevalence of ITN use was carried out in Buchi community Kitwe Zambia from August to October 2019 Methodology: This was a cross sectional study design. A structured questionnaire was used to ascertain ownership and utilization and oral interviews, 200 households were targeted 844 individual covered across the 200 households. Data was analyzed with SPSS version 23. Findings: household ownership of at least an ITN was 52% and individual utilization at 37.6%, with 0.825 ITN/households and 0.195ITN /individual. Malaria prevalence of 52.4% /household and a 12.4% of the population. With 47.6% malaria patient coming from households with ITN and 60% of households with ITN have insufficient coverage.61% of malaria patient were female and 31 % male. however there was no significant relation between Gender and malaria prevalence in study area (p value was >0.05). Malaria cases distribution with age groups, 0-15yrs old represented 49.5%, 16-30 yrs., was at 27.6% and the over 30 yrs. case were at 22.9% .use of other preventive measures 23% used mosquito repellent ,others methods 1% with those not using any other methods 76%. CONCLUSIONS Conclusion The study showed clearly that malaria still poses a problem .the prevalence rate of malaria was still high 12.4% of the population and 52.4% of households. With high prevalence of malaria of 49.5% for 0-15yrs.the difference between ownership 52% and Utilization 37.6% showed that even household with ITN, the ITN were not sufficient.60% of households with ITN, the ITN were not sufficient for all occupants

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Cross-sectional study of the association between age-related macular degeneration and arthritis in the National Health and Nutrition Examination Survey 2005–2008

BMJ Open ◽

10.1136/bmjopen-2019-035805 ◽

2020 ◽

Vol 10 (12) ◽

pp. e035805

Author(s):

Zhuoting Zhu ◽

Huan Liao ◽

Sen Liu ◽

Jian Zhang ◽

Yifan Chen ◽

...

Keyword(s):

Macular Degeneration ◽

National Health ◽

Logistic Models ◽

Cross Sectional Study ◽

Age Related Macular Degeneration ◽

Nutrition Examination Survey ◽

Sectional Study ◽

Cross Sectional ◽

Health And Nutrition ◽

Age Related

ObjectiveTo explore the association between age-related macular degeneration (AMD) and arthritis in a representative sample of the US population.DesignPopulation-based, cross-sectional study.SettingThe National Health and Nutrition Examination Survey (NHANES) 2005–2008.ParticipantsA total of 4813 participants aged 40 years and older with available information on AMD and arthritis in the 2005–2008 NHANES.MethodsThe status and types of arthritis were obtained from questionnaires. Non-mydriatic fundus photographs were collected. The types of AMD were assessed using the modified Wisconsin Age-Related Maculopathy Grading Classification Scheme. The association between arthritis and AMD was evaluated using logistic regression models.ResultsAfter adjusting for covariates, participants with any or early AMD had significantly lower odds of having any type of arthritis (any AMD: OR=0.56, 95% CI: 0.36–0.86; early AMD: OR=0.55, 95% CI: 0.34–0.88) or osteoarthritis (OA) (any AMD: OR=0.43, 95% CI: 0.26–0.71; early AMD: OR=0.44, 95% CI: 0.25–0.76) compared with those without AMD. When considering AMD as the outcome, significant negative associations were also found between any arthritis or OA and any (any arthritis: OR=0.64, 95% CI: 0.43–0.94; OA: OR=0.52, 95% CI: 0.33–0.82) or early AMD (any arthritis: OR=0.61, 95% CI: 0.40–0.93; OA: OR=0.51, 95% CI: 0.31–0.86) in the multivariable logistic models. There was no significant association between different types of arthritis and late AMD.ConclusionsPeople with arthritis, especially those with OA, were less likely to have AMD compared with those without arthritis and vice versa. Further studies are needed to confirm this potential protective effect of arthritis and/or arthritis treatment on AMD and to explore the underlying mechanisms.

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A cross-sectional study measuring contact patterns using diaries in an urban and a rural community in South Africa, 2018

BMC Public Health ◽

10.1186/s12889-021-11136-6 ◽

2021 ◽

Vol 21 (1) ◽

Author(s):

Jackie Kleynhans ◽

Stefano Tempia ◽

Meredith L. McMorrow ◽

Anne von Gottberg ◽

Neil A. Martinson ◽

...

Keyword(s):

South Africa ◽

Age Groups ◽

Cross Sectional Study ◽

Rural Site ◽

Urban Site ◽

Contact Rate ◽

Sectional Study ◽

Cross Sectional ◽

Contact Rates ◽

Contact Patterns

Abstract Background Describing contact patterns is crucial to understanding infectious disease transmission dynamics and guiding targeted transmission mitigation interventions. Data on contact patterns in Africa, especially South Africa, are limited. We measured and compared contact patterns in a rural and urban community, South Africa. We assessed participant and contact characteristics associated with differences in contact rates. Methods We conducted a cross-sectional study nested in a prospective household cohort study. We interviewed participants to collect information on persons in contact with for one day. We described self-reported contact rates as median number people contacted per day, assessed differences in contact rates based on participant characteristics using quantile regression, and used a Poisson model to assess differences in contact rates based on contact characteristics within age groups. We also calculated cumulative person hours in contact within age groups at different locations. Results We conducted 535 interviews (269 rural, 266 urban), with 17,252 contacts reported. The overall contact rate was 14 (interquartile range (IQR) 9–33) contacts per day. Those ≤18 years had higher contact rates at the rural site (coefficient 17, 95% confidence interval (95%CI) 10–23) compared to the urban site, for those aged 14–18 years (13, 95%CI 3–23) compared to < 7 years. No differences were observed for adults. There was a strong age-based mixing, with age groups interacting more with similar age groups, but also interaction of participants of all ages with adults. Children aged 14–18 years had the highest cumulative person hours in contact (116.3 rural and 76.4 urban). Conclusions Age played an important role in the number and duration of contact events, with children at the rural site having almost double the contact rate compared to the urban site. These contact rates can be utilized in mathematical models to assess transmission dynamics of infectious diseases in similar communities.

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Factors associated with physical, psychological and social frailty among community-dwelling older persons in Europe: a cross-sectional study of Urban Health Centres Europe (UHCE)

BMC Geriatrics ◽

10.1186/s12877-021-02364-x ◽

2021 ◽

Vol 21 (1) ◽

Author(s):

Lizhen Ye ◽

Liset E. M. Elstgeest ◽

Xuxi Zhang ◽

Tamara Alhambra-Borrás ◽

Siok Swan Tan ◽

...

Keyword(s):

Risk Factors ◽

Urban Health ◽

Cross Sectional Study ◽

Community Dwelling ◽

Household Composition ◽

European Countries ◽

Sectional Study ◽

Related Condition ◽

Cross Sectional ◽

Age Related

Abstract Background Frailty is an age-related condition resulting in a state of increased vulnerability regarding functioning across multiple systems. It is a multidimensional concept referring to physical, psychological and social domains. The purpose of this study is to identify factors (demographic characteristics, lifestyle factors and health indicators) associated with overall frailty and physical, psychological and social frailty in community-dwelling older people from five European countries. Methods This cross-sectional study used baseline data from 2289 participants of the Urban Health Center European project in five European countries. Multivariable logistic regression models were used to assess associations of the factors with overall frailty and the three frailty domains. Results The mean age was 79.7 (SD = 5.7). Participants who were older, were female, had secondary or equivalent education, lived alone, not at risk of alcohol use, were less physically active, had multi-morbidity, were malnourished or with a higher level of medication risk, had higher odds of overall frailty (all P < 0.05). Age was not associated with psychological and social frailty; sex was not associated with social frailty; smoking and migration background was not associated with overall frailty or any of its domains. There existed an interaction effect between sex and household composition regarding social frailty (P < 0.0003). Conclusions The present study contributed new insights into the risk factors for frailty and its three domains (physical, psychological and social frailty). Nurses, physicians, public health professionals and policymakers should be aware of the risk factors of each type of frailty. Furthermore, examine these risk factors more comprehensively and consider overall frailty as well as its three domains in order to further contribute to decision-making more precisely on the prevention and management of frailty. Trial registration The intervention of the UHCE project was registered in the ISRCTN registry as ISRCTN52788952. The date of registration is 13/03/2017.

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