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Article ; Online: Cognitive function in Mexican older adults 6-months after recovering from SARS-CoV-2 infection.

Mimenza-Alvarado, Alberto Jose / Ambrosio-Palma, Abdias / Aguilar-Navarro, Sara Gloria

Revista espanola de geriatria y gerontologia

2024 Volume 59, Issue 5, Page(s) 101479

Abstract: Background: SARS-CoV-2 infection has been associated with multiple short- and long-term complications including depression, and cognitive impairment (CI). However, older adults with CI after COVID-19 have not been fully documented.: Objective: To ... ...

Abstract	Background: SARS-CoV-2 infection has been associated with multiple short- and long-term complications including depression, and cognitive impairment (CI). However, older adults with CI after COVID-19 have not been fully documented. Objective: To evaluate cognitive function in Mexican adults post-recovery from SARS-CoV-2 infection. Methods: In this prospective observational cohort study, we assess cognitive function (CF) by the Montreal Cognitive Assessment (MOCA) test with a cut-off less than 26 points, and functional status via telemedicine. Eligible patients with a history of moderate-severe COVID-19 aged ≥60 years, cognitively healthy (evaluated by Everyday Cognition Scale) and required admission to an intensive care unit (ICU) were included. Patients with history of dementia, stroke, and delirium during the cognitive evaluation were excluded. The association between CI and COVID-19 was assessed with a Cox regression model. Results: From the 634 patients admitted to the ICU, 415 survived, afterward 308 were excluded and 107 were analyzed. Mean age was 70 years, 58% were female, and 53% had severe COVID. The mean MoCA score was 21±5 points, CI was present in 61 patients (57%). Infection severity (RR 1.87; 95% CI: 1.11-3.15, p<0.05), lower education (RR 0.92; 95% CI: 0.87-0.97, p<0.01), and activity daily living disability (RR 1.87; 95% CI: 1.07-3.26, p<0.05) were the main factors associated with CI (unadjusted model by age and sex). The delayed recall, orientation, and language (83.2, 77.6 and 72.9% respectively) domains were the most affected in patients with CI. Conclusions: Fifty-seven percent of patients analyzed developed CI six months post-ICU discharge due to SARS-CoV-2, and COVID severity was the main factor associated to its outcome.
Language	English
Publishing date	2024-04-30
Publishing country	Spain
Document type	Journal Article
ZDB-ID	605609-x
ISSN	1578-1747 ; 0211-139X
ISSN (online)	1578-1747
ISSN	0211-139X
DOI	10.1016/j.regg.2024.101479
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Article: Factors associated with functional decline in COVID-19 elderly survivors hospitalized in a tertiary care center.

Sandoval-Valdez, Darío A / Aguilar-Navarro, Sara G

Gaceta medica de Mexico

2023 Volume 159, Issue 5, Page(s) 405–413

Abstract: Background: The information on functional decline after hospitalization for COVID-19 is limited in older adults (OAs).: Objective: To determine the association of inflammation (ferritin) and coagulation markers (D-dimer) and clinical factors with the ...

Title translation	Factores asociados al deterioro funcional en adultos mayores sobrevivientes de COVID-19 hospitalizados en un centro de tercer nivel.
Abstract	Background: The information on functional decline after hospitalization for COVID-19 is limited in older adults (OAs). Objective: To determine the association of inflammation (ferritin) and coagulation markers (D-dimer) and clinical factors with the functional status of OAs who suffered from COVID-19 six months after hospital discharge in Mexico. Material and methods: Ambispective cohort study of 158 patients older than 65 years hospitalized for moderate-severe COVID-19 with complete electronic records that would allow to collect information and to contact them six months after discharge. Functional impairment was defined as a decrease ≥ 10 points on the Barthel index. Using logistic regression analysis, the risk of association of biochemical and clinical factors with functional deterioration during follow-up was determined. Results: 46.2% of participants exhibited functional decline. Associated factors included age ≥ 73 years (OR = 2.53), chronic kidney disease (OR = 4.57), an ABC-Goals score ≥ 8 (OR = 2.4), ferritin ≥ 605 ng/mL (OR = 3.94) and D-dimer ≥ 930 ng/mL (OR = 17.56). Conclusion: COVID-19 infection did not only represent a disease with a high risk of mortality during the acute phase, but is also associated with a high risk of functional impairment after hospital discharge.
MeSH term(s)	Humans ; Aged ; COVID-19/epidemiology ; Cohort Studies ; Tertiary Care Centers ; Hospitalization ; Ferritins ; Risk Factors
Chemical Substances	Ferritins (9007-73-2)
Language	English
Publishing date	2023-12-14
Publishing country	Mexico
Document type	Journal Article
ZDB-ID	425456-9
ISSN	0016-3813
ISSN	0016-3813
DOI	10.24875/GMM.M23000822
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Article ; Online: The Mex-Cog cognitive assessment battery: discriminant analysis of the cognitive performance profile in older adults.

Mejia-Arango, Silvia / Aguilar-Navarro, Sara / Mimenza-Alvarado, Alberto

Salud publica de Mexico

2023 Volume 65, Issue 5, sept-oct, Page(s) 465–474

Abstract: Objective: To analyze the cognitive profile of a clinical sample using the Mex-Cog cognitive battery and establish which cognitive measures and domains contribute most to group separation.: Materials and methods: A group of 145 older adults ... ...

Abstract	Objective: To analyze the cognitive profile of a clinical sample using the Mex-Cog cognitive battery and establish which cognitive measures and domains contribute most to group separation. Materials and methods: A group of 145 older adults previously diagnosed with dementia (n= 47), mild cognitive impairment MCI (n= 47), or as cognitively normal (n= 51) were assessed with the Mex-Cog cognitive battery. Six linear discriminant analyses (LDA) were estimated to compare dementia vs. cognitively normal, MCI vs. cognitively normal, and MCI vs. dementia, using ten individual measures and six cognitive domains. We used a leave-one-out cross-validation procedure to evaluate the predictive capacity of LDA models. Results: Discriminant functions using individual measures and domains distinguished correctly 100% of dementia and cognitively normal groups showing a memory and executive function profile. The predictive group membership for MCI versus cognitively normal varied between 82 and 85%, with a cognitive profile associated with attention-executive function followed by memory. Group separation between MCI and dementia was between 80 and 87%, characterized by orientation, memory, and visuospatial abilities. Conclusions: The Mex-Cog cognitive battery is useful for identifying cognitive impairment in older adults.
MeSH term(s)	Humans ; Aged ; Discriminant Analysis ; Cognitive Dysfunction/diagnosis ; Cognitive Dysfunction/psychology ; Attention ; Dementia/diagnosis ; Cognition ; Neuropsychological Tests
Language	English
Publishing date	2023-09-15
Publishing country	Mexico
Document type	Journal Article
ZDB-ID	954220-6
ISSN	1606-7916 ; 0036-3634
ISSN (online)	1606-7916
ISSN	0036-3634
DOI	10.21149/14826
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Article: Cross-cultural adaptation of the everyday cognition scale (M-ECog) in older Mexican adults with cognitive impairment.

Aguilar-Navarro, Sara Gloria / Sánchez, Brenda Lorena Pillajo / Gutiérrez, Lidia Antonia Gutiérrez / Arias-Trejo, Natalia / Quiroz, Yakeel T / Alvarado, Alberto José Mimenza

Dementia & neuropsychologia

2023 Volume 17, Page(s) e20230011

Abstract: The Everyday Cognition (ECog) scale was created to evaluate the functional abilities of older adults across a wide range of abilities between normal aging and dementia. ECog screens cognitive alterations such as subjective cognitive decline (SCD) and ... ...

Abstract	The Everyday Cognition (ECog) scale was created to evaluate the functional abilities of older adults across a wide range of abilities between normal aging and dementia. ECog screens cognitive alterations such as subjective cognitive decline (SCD) and mild cognitive impairment (MCI). This early recognition is done by the measurement of the ability to perform the activities of daily living (ADLs). Objective: To establish the cross-cultural adaptation, validity, and reliability of the ECog Mexican version (M-ECog) in participants with: SCD, MCI, and dementia coming from a memory clinic. Methods: There were 200 patients and their respective informants in a memory clinic of a third level hospital in Mexico City. Four groups were studied: 50 cognitively healthy (CH), 50 SCD, 50 MCI, and 50 dementia. The clinical evaluation included: sociodemographic and health characteristics, cognitive status by the Mini-Mental State Evaluation (MMSE) and Montreal Cognitive Evaluation Spanish version (MoCA-E), and caregiver information (informants) about the difficulty in ADLs as well as the ECog Spanish version (M-ECog). Results: The M-ECog was significantly correlated with MMSE, MoCA-E, and ADLs. It showed the ability to discriminate the different cognitive declines (Cronbach's alpha 0.881). The intra-class correlation coefficient was 0.877 (95% confidence interval - CI, 0.850-0.902; p<0.001). The patient's group area under curve (AUC) of M-ECog for SCD was 0.70 (95%CI 0.58-0.82, p<0.005), for MCI it was 0.94 (95%CI 0.89-0.99, p<0.001) and for dementia 0.86 (95%CI 0.79-0.92, p<0.001). Conclusion: The M-ECog scale proves to be valid and reliable for measuring everyday abilities mediated by cognition. It is self-applicable without requiring extensive prior formation. It is useful to screen for SCD and MCI in older Mexican adults.
Language	English
Publishing date	2023-10-23
Publishing country	Brazil
Document type	Journal Article
ISSN	1980-5764
ISSN	1980-5764
DOI	10.1590/1980-5764-DN-2023-0011
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Article: ASSOCIATION BETWEEN APOE-ε

Mimenza-Alvarado, Alberto J / Suing-Ortega, María J / Tusie-Luna, Teresa / Juárez-Cedillo, Teresa / Ávila-Funes, José A / Aguilar-Navarro, Sara G

Revista de investigacion clinica; organo del Hospital de Enfermedades de la Nutricion

2022 Volume 74, Issue 2, Page(s) 113–120

Abstract: Background: The pathogenesis of mild cognitive impairment (MCI) is multifactorial and includes the presence of genetic variants such as the ε: Objective: The objective of the study was to determine the association between APOE-ε: Methods: A cross- ... ...

Abstract	Background: The pathogenesis of mild cognitive impairment (MCI) is multifactorial and includes the presence of genetic variants such as the ε Objective: The objective of the study was to determine the association between APOE-ε Methods: A cross-sectional study of 72 adults aged 60 years or above who underwent an exhaustive clinical, neuroimaging, and neuropsychological evaluation. Multivariate logistic regression models were constructed to determine the association between APOE-ε Results: Mean age was 75.2 years (± 7.2) and 64% were female. Twenty-one participants were cognitively normal and 51 had MCI. Almost 56% were APOE-ε Conclusion: The APOE-ε
MeSH term(s)	Aged ; Alzheimer Disease/genetics ; Apolipoprotein E4/genetics ; Cognitive Dysfunction/genetics ; Cross-Sectional Studies ; Female ; Humans ; Middle Aged ; Neuroimaging
Chemical Substances	Apolipoprotein E4
Language	English
Publishing date	2022-03-30
Publishing country	Mexico
Document type	Journal Article
ZDB-ID	138348-6
ISSN	0034-8376
ISSN	0034-8376
DOI	10.24875/RIC.21000550
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Article: OLFACTORY DISORDERS IN SARS-COV-2 INFECTION: CONSIDERATIONS IN AGING.

Mimenza-Alvarado, Alberto J / Avila-Funes, José A / Aguilar-Navarro, Sara G

Revista de investigacion clinica; organo del Hospital de Enfermedades de la Nutricion

2020 Volume 72, Issue 3, Page(s) 135–137

MeSH term(s)	Aged ; Aged, 80 and over ; Aging/physiology ; COVID-19 ; Coronavirus Infections/complications ; Coronavirus Infections/epidemiology ; Humans ; Olfaction Disorders/epidemiology ; Olfaction Disorders/virology ; Pandemics ; Pneumonia, Viral/complications ; Pneumonia, Viral/epidemiology
Keywords	covid19
Language	English
Publishing date	2020-06-17
Publishing country	Mexico
Document type	Journal Article ; Review
ZDB-ID	138348-6
ISSN	0034-8376
ISSN	0034-8376
DOI	10.24875/RIC.20000157
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Article: Association between vitamin B

Aguilar-Navarro, Sara G / Carbajal-Silva, Juan C / Palacios-Hernández, María G I / Gutiérrez-Gutierrez, Lidia A / Ávila-Funes, José A / Mimenza-Alvarado, Alberto J

Gaceta medica de Mexico

2023 Volume 159, Issue 1, Page(s) 32–37

Abstract: Introduction: Whether vitamin B: Objective: To determine the association between vitamin B: Methods: Two-hundred and forty-one adults aged ≥ 60 years who had serum vitamin B: Results: Mean age was 81.4 ± 8.0 years; 68% were females; 17.8 % and ... ...

Title translation	Asociación entre los niveles de vitamina B
Abstract	Introduction: Whether vitamin B Objective: To determine the association between vitamin B Methods: Two-hundred and forty-one adults aged ≥ 60 years who had serum vitamin B Results: Mean age was 81.4 ± 8.0 years; 68% were females; 17.8 % and 39.8% had absolute and subclinical vitamin B Conclusions: A statistically significant association was observed between global cognitive performance and levels of vitamin B
MeSH term(s)	Female ; Humans ; Aged ; Aged, 80 and over ; Male ; Vitamin B 12 ; Cognitive Dysfunction/epidemiology ; Cognitive Dysfunction/etiology ; Cognition Disorders ; Cognition ; Dementia/epidemiology ; Dementia/etiology ; Vitamins
Chemical Substances	Vitamin B 12 (P6YC3EG204) ; Vitamins
Language	English
Publishing date	2023-03-17
Publishing country	Mexico
Document type	Journal Article
ZDB-ID	425456-9
ISSN	0016-3813
ISSN	0016-3813
DOI	10.24875/GMM.M22000733
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Article ; Online: Prevalence and incidence of possible vascular dementia among Mexican older adults: Analysis of the Mexican Health and Aging Study.

Yeverino-Castro, Sara G / Mejía-Arango, Silvia / Mimenza-Alvarado, Alberto J / Cantú-Brito, Carlos / Avila-Funes, José A / Aguilar-Navarro, Sara G

PloS one

2021 Volume 16, Issue 7, Page(s) e0253856

Abstract: Introduction: Vascular dementia is the second most common cause of dementia. Physical disability and cognitive impairment due to stroke are conditions that considerably affect quality of life. We estimated the prevalence and incidence of possible ... ...

Abstract	Introduction: Vascular dementia is the second most common cause of dementia. Physical disability and cognitive impairment due to stroke are conditions that considerably affect quality of life. We estimated the prevalence and incidence of possible vascular dementia (PVD) in older adults using data from the Mexican Health and Aging Study (MHAS 2012 and 2015 waves). Methods: The MHAS is a representative longitudinal cohort study of Mexican adults aged ≥50 years. Data from 14, 893 participants from the 2012 cohort and 14,154 from the 2015 cohort were analyzed to estimate the prevalence and incidence of PVD. Self-respondents with history of stroke were classified as PVD if scores in two or more cognitive domains in the Cross-Cultural Cognitive Examination were ≥ 1.5 standard deviations below the mean on reference norms and if limitations in ≥ 1 instrumental activities of daily living were present. For proxy respondents with history of stroke, we used a score ≥3.4 on the Informant Questionnaire on Cognitive Decline in the Elderly. Crude and standardized rates of prevalent and incident PVD were estimated. Results: Prevalence of PVD was 0.6% (95% CI, 0.5-0.8) (0.5 with age and sex- standardization). Rates increased with age reaching 2.0% among those aged 80 and older and decreased with educational attainment. After 3.0 years of follow-up, 87 new cases of PVD represented an overall incident rate of 2.2 (95% CI, 1.7-2.6) per 1,000 person-years (2.0 with age and sex- standardization). Incidence also increased with advancing age reaching an overall rate of 9.4 (95% CI, 6.3-13.6) per 1,000 person-years for participants aged >80 years. Hypertension and depressive symptoms were strong predictors of incident PVD. Conclusion: These data provide new estimates of PVD prevalence and incidence in the Mexican population. We found that PVD incidence increased with age. Males aged 80 years or older showed a greater incidence rate when compared to females, which is comparable to previous estimates from other studies.
MeSH term(s)	Activities of Daily Living ; Age Factors ; Aged ; Aged, 80 and over ; Aging/physiology ; Dementia, Vascular/diagnosis ; Dementia, Vascular/epidemiology ; Dementia, Vascular/etiology ; Dementia, Vascular/physiopathology ; Female ; Health Surveys/statistics & numerical data ; Humans ; Incidence ; Longitudinal Studies ; Male ; Middle Aged ; Prevalence ; Quality of Life ; Risk Factors ; Sex Factors ; Stroke/complications ; Stroke/epidemiology
Language	English
Publishing date	2021-07-08
Publishing country	United States
Document type	Journal Article ; Research Support, Non-U.S. Gov't
ISSN	1932-6203
ISSN (online)	1932-6203
DOI	10.1371/journal.pone.0253856
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Article: Association between ApoE ε4 Carrier Status and Cardiovascular Risk Factors on Mild Cognitive Impairment among Mexican Older Adults.

Aguilar-Navarro, Sara G / Gonzalez-Aparicio, Itzel I / Avila-Funes, José Alberto / Juárez-Cedillo, Teresa / Tusié-Luna, Teresa / Mimenza-Alvarado, Alberto Jose

Brain sciences

2021 Volume 11, Issue 1

Abstract: Mild cognitive impairment (MCI) (amnestic or non-amnestic) has different clinical and neuropsychological characteristics, and its evolution is heterogeneous. Cardiovascular risk factors (CVRF), such as hypertension, diabetes, or dyslipidemia, and the ... ...

Abstract	Mild cognitive impairment (MCI) (amnestic or non-amnestic) has different clinical and neuropsychological characteristics, and its evolution is heterogeneous. Cardiovascular risk factors (CVRF), such as hypertension, diabetes, or dyslipidemia, and the presence of the Apolipoprotein E ε4 (ApoE ε4) polymorphism have been associated with an increased risk of developing Alzheimer's disease (AD) and other dementias but the relationship is inconsistent worldwide. We aimed to establish the association between the ApoE ε4 carrier status and CVRF on MCI subtypes (amnestic and non-amnestic) in Mexican older adults. Cross-sectional study including 137 older adults (
Language	English
Publishing date	2021-01-07
Publishing country	Switzerland
Document type	Journal Article
ZDB-ID	2651993-8
ISSN	2076-3425
ISSN	2076-3425
DOI	10.3390/brainsci11010068
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Article ; Online: The Social Vulnerability Index, Mortality and Disability in Mexican Middle-Aged and Older Adults.

Sánchez-Garrido, Natalia / Aguilar-Navarro, Sara G / Ávila-Funes, José Alberto / Theou, Olga / Andrew, Melissa / Pérez-Zepeda, Mario Ulises

Geriatrics (Basel, Switzerland)

2021 Volume 6, Issue 1

Abstract: The social vulnerability index (SVI) independently predicts mortality and others adverse outcomes across different populations. There is no evidence that the SVI can predict adverse outcomes in individuals living in countries with high social ... ...

Abstract	The social vulnerability index (SVI) independently predicts mortality and others adverse outcomes across different populations. There is no evidence that the SVI can predict adverse outcomes in individuals living in countries with high social vulnerability such as Latin America. The aim of this study was to analyze the association of the SVI with mortality and disability in Mexican middle-aged and older adults. This is a longitudinal study with a follow-up of 47 months, the Mexican Health and Aging Study, including people over the age of 40 years. A SVI was calculated using 42 items stratified in three categories low (<0.36), medium (0.36-0.47), and high (>0.47) vulnerability. We examined the association of SVI with three-year mortality and incident disability. Cox and logistic regression models were fitted to test these associations. We included 14,217 participants (58.4% women) with a mean age of 63.9 years (±SD 10.1). The mean SVI was of 0.42 (±SD 0.12). Mortality rate at three years was 6% (n = 809) and incident disability was 13.2% (n = 1367). SVI was independently associated with mortality, with a HR of 1.4 (95% CI 1.1-1.8,
Language	English
Publishing date	2021-03-08
Publishing country	Switzerland
Document type	Journal Article
ISSN	2308-3417
ISSN (online)	2308-3417
DOI	10.3390/geriatrics6010024
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