Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 20 de 38
Filtrar
1.
J Am Geriatr Soc ; 2024 Jun 07.
Artículo en Inglés | MEDLINE | ID: mdl-38847346

RESUMEN

BACKGROUND: Cognitive screening tools enable the detection of cognitive impairment, facilitate timely intervention, inform clinical care, and allow long-term planning. The Montreal Cognitive Assessment for people with hearing impairment (MoCA-H) was developed as a reliable cognitive screening tool for people with hearing loss. Using the same methodology across four languages, this study examined whether cultural or linguistic factors affect the performance of the MoCA-H. METHODS: The current study investigated the performance of the MoCA-H across English, German, French, and Greek language groups (n = 385) controlling for demographic factors known to affect the performance of the MoCA-H. RESULTS: In a multiple regression model accounting for age, sex, and education, cultural-linguistic group accounted for 6.89% of variance in the total MoCA-H score. Differences between languages in mean score of up to 2.6 points were observed. CONCLUSIONS: Cultural or linguistic factors have a clinically significant impact on the performance of the MoCA-H such that optimal performance cut points for identification of cognitive impairment derived in English-speaking populations are likely inappropriate for use in non-English speaking populations. To ensure reliable identification of cognitive impairment, it is essential that locally appropriate performance cut points are established for each translation of the MoCA-H.

2.
Geriatr Nurs ; 53: 1-5, 2023.
Artículo en Inglés | MEDLINE | ID: mdl-37393752

RESUMEN

BACKGROUND: The PAL is a career-completed assessment that indexes cognitive functional ability to inform individualised support. As hearing and vision loss are prevalent, we assessed the PAL for potential bias with hearing or vision impairment. METHODS: We collected PAL responses for 333 adults aged over 60 years in the UK, France, Canada, Greece and Cyprus. All participants had normal cognition based on self-reported status and normal range scores on a cognitive screening test. Using a Kruskal-Wallis test, we compared PAL item response distributions for people with assessed hearing or vision loss compared to those with normal sensory function. RESULTS: There were no differences in response distributions between hearing or vision impaired groups versus those with normal sensory function on any PAL item. CONCLUSION: The PAL reliably indexes cognitive functional ability and may be used to inform support tailored to individual cognitive level amongst older adults with prevalent hearing and vision impairments.


Asunto(s)
Disfunción Cognitiva , Trastornos Sordoceguera , Pérdida Auditiva , Humanos , Persona de Mediana Edad , Anciano , Disfunción Cognitiva/psicología , Lista de Verificación , Trastornos de la Visión/diagnóstico , Trastornos de la Visión/psicología , Audición
3.
J Am Geriatr Soc ; 71(5): 1485-1494, 2023 05.
Artículo en Inglés | MEDLINE | ID: mdl-36722180

RESUMEN

BACKGROUND: Hearing impairment is common among older adults and affects cognitive assessments for identification of dementia which rely on good hearing function. We developed and validated a version of the Montreal Cognitive Assessment (MoCA) for people with hearing impairment. METHODS: We adapted existing MoCA 8.1 items for people with hearing impairment by presenting instructions and stimuli in written rather than spoken format. One Attention domain and two Language domain items required substitution by alternative items. Three and four candidate items respectively were constructed and field-tested along with the items adapted to written form. We used a combination of individual item analysis and item substitution to select the set of alternative items to be included in the final form of the MoCA-H in place of the excluded original items. We then evaluated the performance and reliability of the final tool, including making any required adjustments for demographic factors. RESULTS: One hundred and fifty-nine hearing-impaired participants, including 76 with normal cognition and 83 with dementia, completed the adapted version of the MoCA. A further 97 participants with normal hearing completed the standard MoCA as well as the novel items developed for the MoCA-H to assess score equivalence between the existing and alternative MoCA items and for independence from hearing impairment. Twenty-eight participants were retested between 2-4 weeks after initial testing. After the selection of optimal item set, the final MoCA-H had an area under the curve of 0.973 (95% CI 0.952-0.994). At a cut-point of 24 points or less sensitivity and specificity for dementia was 92.8% and 90.8%, respectively. The intraclass correlation for test-retest reliability was 0.92 (95%CI 0.78-0.97). CONCLUSION: The MoCA-H is a sensitive and reliable means of identifying dementia among adults with acquired hearing impairment.


Asunto(s)
Disfunción Cognitiva , Demencia , Pérdida Auditiva , Humanos , Anciano , Disfunción Cognitiva/diagnóstico , Reproducibilidad de los Resultados , Pruebas de Estado Mental y Demencia , Pérdida Auditiva/diagnóstico , Pérdida Auditiva/psicología , Demencia/complicaciones , Demencia/diagnóstico , Pruebas Neuropsicológicas
4.
Alzheimers Dement ; 18(10): 1957-1968, 2022 10.
Artículo en Inglés | MEDLINE | ID: mdl-35184367

RESUMEN

As research and services in the Mediterranean region continue to increase, so do opportunities for global collaboration. To support such collaborations, the Alzheimer's Association was due to hold its seventh Alzheimer's Association International Conference Satellite Symposium in Athens, Greece in 2021. Due to the COVID-19 pandemic, the meeting was held virtually, which enabled attendees from around the world to hear about research efforts in Greece and the surrounding Mediterranean countries. Research updates spanned understanding the biology of, treatments for, and care of people with Alzheimer's disease (AD_ and other dementias. Researchers in the Mediterranean region have outlined the local epidemiology of AD and dementia, and have identified regional populations that may expedite genetic studies. Development of biomarkers is expected to aid early and accurate diagnosis. Numerous efforts have been made to develop culturally specific interventions to both reduce risk of dementia, and to improve quality of life for people living with dementia.


Asunto(s)
Enfermedad de Alzheimer , COVID-19 , Humanos , Enfermedad de Alzheimer/epidemiología , Enfermedad de Alzheimer/terapia , Enfermedad de Alzheimer/diagnóstico , Calidad de Vida , Pandemias , Biomarcadores
5.
J Geriatr Psychiatry Neurol ; 35(4): 535-543, 2022 07.
Artículo en Inglés | MEDLINE | ID: mdl-34151638

RESUMEN

OBJECTIVES: Many people with dementia live in their home and require ongoing care, which is often provided by informal family caregivers. Thus, we examined the effectiveness of a multicomponent home-based intervention by evaluating its impact on a) neuropsychiatric symptoms of people with dementia and b) burden and depression of their caregivers. METHODS: During the first 6 months of this prospective single-center study, we applied a home-based multicomponent intervention in 205 dyads of care-recipients and caregivers. In further analyzes, we included only dyads of caregivers and care-recipients with available data both at baseline and 6-month follow-up (N = 144). All assessments were conducted at home and included sociodemographic features, care-recipients' clinical data, cognitive status (Mini-Mental State Examination), activities of daily living (Instrumental Activities of Daily Living; Katz Index of Independence in Activities of Daily Living), neuropsychiatric symptoms (Neuropsychiatric Inventory), and caregivers' burden (Zarit Burden Inventory) and depression (Center for Epidemiological Studies-Depression). RESULTS: We found significant decreases in the severity (pFDR = 0.002) and associated distress (pFDR = 0.001) of neuropsychiatric symptoms, as well as caregivers' burden (pFDR = 0.004) and depressive symptoms (pFDR = 0.001). As expected, there was significant deterioration in care-recipients' cognitive status (pFDR = 0.005) and measures of activities of daily living (pFDR < 0.005). CONCLUSION: Despite the progressive course of dementia, the home-based multicomponent intervention was effective in decreasing caregivers' burden and depression and minimizing care-recipients' neuropsychiatric symptoms' severity and associated distress after 6 months. Our study highlights the establishment of home-based care units as an advantageous solution, specifically for family members seen to have a "taken-for-granted" role in dementia caring.


Asunto(s)
Cuidadores , Demencia , Actividades Cotidianas/psicología , Cuidadores/psicología , Demencia/psicología , Demencia/terapia , Humanos , Estudios Longitudinales , Estudios Prospectivos
6.
J Dairy Res ; 88(3): 307-313, 2021 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-34392841

RESUMEN

Dairy goat farming is an important sector of the agricultural industry in Greece, with an annual total milk production exceeding 450 000 l and accounting for over 25% of all goat milk produced in the European Union; this milk is used mainly for cheese production. Despite the importance of goat milk for the agricultural sector in Greece, no systematic countrywide investigations in the bulk-tank milk of goats in Greece have been reported. Objectives were to investigate somatic cell counts (SCC) and total bacterial counts (TBC) in raw bulk-tank milk of goat herds in Greece, study factors influencing SCC and TBC therein and evaluate their possible associations with milk content. Throughout Greece, 119 dairy goat herds were visited for milk sampling for somatic cell counting, microbiological examination and composition measurement. Geometric mean SCC and TBC were 0.838 × 106 cells ml-1 and 581 × 103 cfu ml-1, respectively. Multivariable analyses revealed annual frequency of check-ups of milking system and total milk quantity per goat (among 53 variables) to be significant for increased SCC; no factor emerged (among 58 variables) to be significant for increased TBC. Negative correlation of SCC with total protein was found; mean total protein content in the bulk-tank milk in herds with SCC >0.75 × 106 cells ml-1 was 5.1% lower and in herds with SCC >1.5 × 106 cells ml-1, it was 7.8% lower.


Asunto(s)
Carga Bacteriana/veterinaria , Recuento de Células/veterinaria , Cabras , Leche/citología , Leche/microbiología , Animales , Composición Corporal , Industria Lechera/métodos , Femenino , Grecia , Leche/química , Proteínas de la Leche/análisis , Staphylococcus/aislamiento & purificación
7.
Animals (Basel) ; 11(8)2021 Jul 22.
Artículo en Inglés | MEDLINE | ID: mdl-34438630

RESUMEN

Objectives of the study were (a) to investigate the incidence risk of peri-parturient mortality in dairy flocks in Greece, (b) to study when such mortality occurs in relation to lambing, (c) to identify clinical problems associated with the deaths, and (d) to evaluate potentially associated factors. The deaths of ewes during the peri-parturient period (10 days before to 7 days after lambing) were monitored in 60 flocks over two years. In the ewes that died, detailed post-mortems were performed. The incidence risk of peri-parturient deaths was 0.7%. The daily incidence rate of deaths before, at, and after lambing was 0.05, 0.04, and 0.03%, respectively. Clinical problems most frequently associated with peri-parturient deaths were pregnancy toxaemia, ruminal acidosis and post-partum genital problems. For the occurrence of peri-parturient deaths in flocks, the average lambing rate in the flocks was the only significant factor. Regarding deaths before or after lambing, the season during which lambing took place and the number of animals in the flock, respectively, were found to be significant. Most ewes (54.5%) that died at lambing (dystocia) were primigravidae.

8.
Mol Psychiatry ; 26(10): 5797-5811, 2021 10.
Artículo en Inglés | MEDLINE | ID: mdl-34112972

RESUMEN

Psychotic symptoms, defined as the occurrence of delusions or hallucinations, are frequent in Alzheimer disease (AD with psychosis, AD + P). AD + P affects ~50% of individuals with AD, identifies a subgroup with poor outcomes, and is associated with a greater degree of cognitive impairment and depressive symptoms, compared to subjects without psychosis (AD - P). Although the estimated heritability of AD + P is 61%, genetic sources of risk are unknown. We report a genome-wide meta-analysis of 12,317 AD subjects, 5445 AD + P. Results showed common genetic variation accounted for a significant portion of heritability. Two loci, one in ENPP6 (rs9994623, O.R. (95%CI) 1.16 (1.10, 1.22), p = 1.26 × 10-8) and one spanning the 3'-UTR of an alternatively spliced transcript of SUMF1 (rs201109606, O.R. 0.65 (0.56-0.76), p = 3.24 × 10-8), had genome-wide significant associations with AD + P. Gene-based analysis identified a significant association with APOE, due to the APOE risk haplotype ε4. AD + P demonstrated negative genetic correlations with cognitive and educational attainment and positive genetic correlation with depressive symptoms. We previously observed a negative genetic correlation with schizophrenia; instead, we now found a stronger negative correlation with the related phenotype of bipolar disorder. Analysis of polygenic risk scores supported this genetic correlation and documented a positive genetic correlation with risk variation for AD, beyond the effect of ε4. We also document a small set of SNPs likely to affect risk for AD + P and AD or schizophrenia. These findings provide the first unbiased identification of the association of psychosis in AD with common genetic variation and provide insights into its genetic architecture.


Asunto(s)
Enfermedad de Alzheimer , Trastornos Psicóticos , Esquizofrenia , Enfermedad de Alzheimer/genética , Predisposición Genética a la Enfermedad/genética , Estudio de Asociación del Genoma Completo , Alucinaciones , Humanos , Oxidorreductasas actuantes sobre Donantes de Grupos Sulfuro , Polimorfismo de Nucleótido Simple/genética , Trastornos Psicóticos/genética , Esquizofrenia/genética
9.
Pathogens ; 10(4)2021 Mar 24.
Artículo en Inglés | MEDLINE | ID: mdl-33804878

RESUMEN

There is a paucity of information regarding staphylococcal populations on teatcups of milking parlours in sheep and goat farms. The objectives were to describe the populations of staphylococci on teatcups in milking parlours in sheep or goat farms in two field investigations throughout Greece and to potentially associate the findings with the use of anti-staphylococcal mastitis vaccinations in the farms visited during the two investigations. In a cross-sectional (255 sheep and 66 goat farms across Greece) and a longitudinal (12 sheep farms, four samplings, throughout lactation) study, swab samples were collected from 1418 teatcups (upper and lower part) for staphylococcal recovery, identification and assessment of biofilm-formation. A total of 328 contaminated teatcups (23.1%) were found in 105 sheep (41.2%) and 35 goat (53.0%) farms. Staphylococci were more frequently recovered from the upper than the lower part of teatcups: 269 versus 139 teatcups, respectively. After identification, 253 staphylococcal isolates were found: Staphylococcus aureus, Staphylococcus equorum, Staphylococcus lentus, and Staphylococcus capitis predominated. Of these isolates, 87.4% were biofilm-forming. The proportion of contaminated teatcups was smaller in farms where vaccination against anti-staphylococcal mastitis in general or vaccination specifically against mastitis caused specifically by biofilm-forming staphylococcal strains was applied, 19.7% or 10.9%, respectively, versus 25.5% in farms without vaccination. In the longitudinal study, contaminated teatcups were identified in 28 (58.3%) sampling occasions, with staphylococci being recovered more frequently from their upper part. The same species as in the cross-sectional study predominated. Of these isolates, 61.9% were biofilm-forming. In farms where vaccination against mastitis caused specifically by biofilm-forming staphylococcal strains was applied, the proportion of contaminated teatcups was smaller: 20.4% versus 48.3% in farms without vaccination. There were no differences in proportions of contaminated teatcups between sampling occasions. In conclusion, the great majority of staphylococci recovered from teatcups of milking parlours in sheep and goat farms included biofilm-forming isolates. Reduced staphylococcal isolation was noted in farms where anti-staphylococcal vaccination was performed; this was possibly the effect of reduced excretion of staphylococci in the milk of vaccinated animals.

10.
Foods ; 10(2)2021 Jan 28.
Artículo en Inglés | MEDLINE | ID: mdl-33525696

RESUMEN

Objectives were to investigate somatic cell counts (SCC) and total bacterial counts (TBC) in the raw bulk-tank milk of sheep flocks in Greece, to study factors potentially influencing increased SCC and TBC in the bulk-tank milk of sheep and to evaluate possible associations of SCC and TBC with milk content. Throughout Greece, 325 dairy sheep flocks were visited for collection of milk sampling for somatic cell counting, microbiological examination and composition measurement. Geometric mean SCC were 0.488 × 106 cells mL-1; geometric mean TBC were 398 × 103 cfu mL-1; 228 staphylococcal isolates were recovered form 206 flocks (63.4%). Multivariable analyses revealed annual incidence risk of clinical mastitis, age of the farmer and month into lactation period (among 53 variables) to be significant for SCC > 1.0 × 106 cells mL-1 and month into lactation period at sampling and availability of mechanical ventilators (among 58 variables) to be significant for TBC > 1500 × 103 cfu mL-1. Negative correlation of SCC with fat, total protein and lactose and positive correlation of SCC with added water were found. With SCC > 1.0 × 106 cells mL-1, significant reduction of protein content (2%) was observed, whilst in flocks with SCC > 1.5 × 106 cells mL-1, significantly lower annual milk production per ewe (42.9%) was recorded.

11.
J Dairy Res ; 87(3): 277-281, 2020 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-32883377

RESUMEN

The objectives of this work were (a) to determine the presence of streptococci in samples from small ruminant dairy farms (bulk-tank milk and, where possible, teatcup swabs), (b) to investigate the potential adverse effects of streptococci on milk quality and (c) to investigate the importance of some husbandry factors for the isolation of streptococci. Bulk-tank milk samples and teatcups swab samples were examined bacteriologically for the presence of streptococci. Somatic cell counting and milk composition measurements were also performed. The husbandry factors present in each farm were assessed for potential associations with the isolation of streptococci. Streptococci were isolated from milk samples from 31.4% of sheep and 17.4% of goat farms and from 4.8% of sheep and 5.9% of goat teatcups. Streptococci were isolated more frequently from the upper part than the lower part of teatcups: 5.0% vs. 1.9%. Most isolates (57.9%) were identified as Streptococcus uberis. Most isolates (68.4%) were slime-producing; slime-production was more frequent among isolates from teatcups (83.3%) than from bulk-tank milk (55.0%). Somatic cell counts and milk composition did not differ between farms in which streptococci were or were not isolated. Machine-milking was associated with the isolation of streptococci from bulk-tank milk samples. The initial stage of the milking period (first two months) was found to be associated with the isolation of streptococci from milking machine teatcups in sheep farms only.


Asunto(s)
Industria Lechera/instrumentación , Cabras , Leche/microbiología , Ovinos , Streptococcus/aislamiento & purificación , Animales , Granjas , Femenino
12.
Animals (Basel) ; 10(9)2020 Aug 24.
Artículo en Inglés | MEDLINE | ID: mdl-32846944

RESUMEN

The objective of this work was to develop, use and present a detailed questionnaire for the evaluation of health management in dairy small ruminants; it includes 442 questions organised in seven sections: general, infrastructure, animals, production characteristics, health management, nutrition, human resources. Consistency of replies was evaluated in 27 farmers, interviewed twice. Inconsistent replies were given by all farmers to 30 different questions (Cronbach's coefficient alpha: 0.987). Then, interviews were performed in 444 farms around Greece. Mean duration of an interview was 63.6 min. Clarifications were requested by 273 farmers to 22 different questions (maximum per farmer: 8). The experience of the investigator, the primary language of farmers and asking clarifications by the farmers affected the duration of the interview. The questionnaire can be used for research work in the field, to record details in the farms under study. In accord with the needs of a particular study, it can be modified, by adding more specific questions or omitting others deemed of less importance. Moreover, it can also be used for routine monitoring purposes, as a useful means to record and maintain details of farms during clinical work. To the best of our knowledge, the questionnaire is the most extensive and detailed one available internationally for dairy small ruminants.

14.
J Nurs Manag ; 28(3): 615-624, 2020 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-31985861

RESUMEN

OBJECTIVE: To investigate possible correlations between stigma and burnout of nurses and non-graduate professional caregivers of elderly with dementia in nursing homes. BACKGROUND: Research on dementia stigma in health care professionals as well as its relationship with their well-being is seriously lacking. METHODS: This cross-sectional study involved a convenience sample of 171 nurses and other professional caregivers in 16 Greek elderly care units who responded to Maslah Burnout Inventory (ΜΒΙ) as well as the Family Stigma in Alzheimer's Disease Scale (FS-ADS). In order to find adjusted associations between independent variables and the stigma and burnout of professional caregivers, multiple linear regression analysis was used. RESULTS: Cognitive, emotional and behavioural attributions of the three dimensions of stigma were found to be independent predictive factors of burnout's dimensions which indicate that stigma nurses deposit on patients, contributes towards their burnout. CONCLUSION: Educational preparation of geriatric nurses should provide them with the option of seeing dementia as a normal stage of life since reducing stigma can contribute towards preventing and managing professional burnout. IMPLICATIONS FOR NURSING MANAGEMENT: In order to reduce burnout, nurse managers should design lifelong learning programs on the basis of changing the stigmatizing negative cognitive and emotional attitudes of professionals towards dementia.


Asunto(s)
Agotamiento Profesional/etiología , Demencia/enfermería , Enfermeras y Enfermeros/psicología , Estigma Social , Adulto , Agotamiento Profesional/psicología , Estudios Transversales , Demencia/complicaciones , Femenino , Grecia , Humanos , Masculino , Persona de Mediana Edad , Encuestas y Cuestionarios
15.
Mol Biol Rep ; 47(1): 191-200, 2020 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-31595439

RESUMEN

Serotoninergic system is one of the most important neurotransmission systems investigated in the field of psychiatry. Extensive evidence reveals how alterations of this system, and especially of the SLC6A4 gene, may be associated with psychiatric disorders. In this study we aimed to evaluate the pleiotropic nature of SLC6A4 alterations and their association with the overall risk of brain diseases rather than disorder-specific. SLC6A4 variants, namely 5HTTLPR, STin2, rs2066713, rs25531, rs4251417, rs6354 and rs7224199 were investigated in 4 independent cohorts of subjects with specific psychiatric disorders, including Alcohol dependence disorder (ALC), Alzheimer disease (ALZ), Schizophrenia (SCZ) and Bipolar disorder (BPD). Other variables (biochemical parameters and Psychiatric scales scores) were also tested for association. SLC6A4 polymorphisms are not associated with the risk of developing major psychiatric disorders (SCZ and BPD); however some signals were detected in ALC (HTTLPR pd = 9.25 × 10-03, pr = 7.24 × 10-03; rs2066713 pd = 6.35 × 10-08; rs25531 pd = 2.95 × 10-02; rs4251417 pd = 2.46 × 10-03), and ALZ (rs6354 pr = 1.22 × 10-02; rs7224199 pd = 1.00 × 10-08, pr = 2.65 × 10-02) cohorts. Some associations were also observed on exploratory analyses. Our findings did not reveal any major influence on SCZ and BPD development; On the other hand, some alteration of the SLC6A4 sequence were associated with an increased risk of ALC and ALZ disorders, suggesting common pathways. The results of this study should be carefully interpreted since it suffers of some inherent limitations (e.g. cohort size, slight ethnic heterogeneity). Further analyses may provide better detail on the molecular processes behind SLC6A4 alterations.


Asunto(s)
Alcoholismo/genética , Enfermedad de Alzheimer/genética , Trastornos Mentales/genética , Polimorfismo Genético , Proteínas de Transporte de Serotonina en la Membrana Plasmática/genética , Adolescente , Adulto , Anciano , Anciano de 80 o más Años , Alcoholismo/complicaciones , Alcoholismo/epidemiología , Enfermedad de Alzheimer/complicaciones , Enfermedad de Alzheimer/epidemiología , Estudios de Casos y Controles , Estudios de Cohortes , Comorbilidad , Frecuencia de los Genes , Estudios de Asociación Genética , Predisposición Genética a la Enfermedad , Genotipo , Grecia/epidemiología , Humanos , Italia/epidemiología , Desequilibrio de Ligamiento , Trastornos Mentales/epidemiología , Persona de Mediana Edad , Adulto Joven
16.
Animals (Basel) ; 9(10)2019 Sep 26.
Artículo en Inglés | MEDLINE | ID: mdl-31561433

RESUMEN

The objectives of this review paper are to present udder defences, including teat of the udder, mammary epithelial cells, leucocytes, immunoglobulins, complement system and chemical antibacterial agents, to describe cooperation and interactions between them and to elaborate on potentials regarding their significance in mammary immunisation strategies. The teat of the udder provides initial protection to the mammary gland. The mammary epithelial cells synthesise antibacterial proteins and the leucocytes produce various inflammation mediators (cytokines or chemokines), phagocytose bacteria and recognise antigenic structures. In the mammary gland, four immunoglobulins (IgG1, IgG2, IgM and IgA) have important roles against bacterial pathogens. The complement system is a collection of proteins, participating in the inflammatory process through various pathways. Other components contributing to humoral mammary defence include lactoferrin, lysozyme and the lactoperoxidase/myeloperoxidase systems, as well as oligosaccharides, gangliosides, reactive oxygen species, acute phase proteins (e.g., haptoglobin and serum amyloid A), ribonucleases and a wide range of antimicrobial peptides. Management practices, genetic variations and nutrition can influence mammary defences and should be taken into account in the formulation of prevention strategies against ovine mastitis.

17.
Neuropsychobiology ; 78(2): 79-85, 2019.
Artículo en Inglés | MEDLINE | ID: mdl-31096213

RESUMEN

BACKGROUND: Alzheimer's disease (AD) is a neurodegenerative disorder accounting for 60-70% of dementia cases. Genetic origin accounts for 49-79% of disease risk. This paper aims to investigate the association of 17 polymorphisms within 7 genes involved in neurotransmission (COMT, HTR2A, PPP3CC, RORA, SIGMAR1, SIRT1, and SORBS3) and AD. METHODS: A Greek and an Italian sample were investigated, for a total of 156 AD subjects and 301 healthy controls. Exploratory analyses on psychosis and depression comorbidities were performed, as well as on other available clinical and serological parameters. RESULTS: AD was associated with rs4680 within the COMT gene in the total sample. Trends of association were found in the 2 subsamples. Some nominal associations were found for the depressive phenotype. rs10997871 and rs10997875 within SIRT1 were nominally associated with depression in the total sample and in the Greek subsample. rs174696 within COMT was associated with depression comorbidity in the Italian subsample. DISCUSSION: Our data support the role of COMT, and particularly of rs4680, in the pathogenesis of AD. Furthermore, the SIRT1 gene seems to modulate depressive symptomatology in the AD population.


Asunto(s)
Enfermedad de Alzheimer/epidemiología , Enfermedad de Alzheimer/genética , Catecol O-Metiltransferasa/genética , Inflamación/epidemiología , Trastornos Mentales/epidemiología , Trastornos Mentales/genética , Sirtuina 1/genética , Anciano , Anciano de 80 o más Años , Estudios de Casos y Controles , Comorbilidad , Femenino , Predisposición Genética a la Enfermedad/genética , Grecia/epidemiología , Humanos , Inflamación/genética , Italia/epidemiología , Masculino , Polimorfismo de Nucleótido Simple/genética , Transmisión Sináptica/genética
19.
J Neurol Sci ; 370: 162-166, 2016 11 15.
Artículo en Inglés | MEDLINE | ID: mdl-27772752

RESUMEN

INTRODUCTION: With the increase of the population's average age, Alzheimer's disease (AD) is becoming one of the most disabling diseases worldwide. Recently, neurodevelopment processes have been involved in the AD etiopathogenesis. Genetic studies in this field could contribute to our knowledge and suggest new molecular targets for possible treatments. METHODS: Our primary aim was to investigate the associations among single nucleotide polymorphisms (SNPs) within neurodevelopment related genes (BDNF, ST8SIA2, C15orf32, NCAPG2, ESYT2, WDR60, LOC154822, VIPR2, GSK3B, NR1I2, ZNF804A, SP4) and AD. A number of exploratory analyses was also performed to evaluate the associations with the presence of behavioral and psychiatric symptoms of dementia (BPSD), as well as with variations in hematological parameters. Two independent samples were investigated, one of 228 Greek subjects and one sample of 229 Italian subjects, including 156Alzheimer's Disease patients CE patients and 301 healthy controls. All patients were affected by late onset AD (LOAD). RESULTS: None of the analyzed SNPs was associated with AD in our samples. In the exploratory analyses, several genetic variants were associated with inflammation parameters in the Greek sample and in the merged one, suggesting a relationship among these genes and the modulation of inflammation and the immune response. Other exploratory analyses showed associations among several SNPs and psychiatric symptomatology in the Greek sample, suggesting a possible modulation of these variants on psychiatric comorbidities in AD. CONCLUSIONS: Although we failed to find a direct relationship between AD and the genetic variants investigated, possible connections with inflammation and psychiatric symptoms were suggested.


Asunto(s)
Enfermedad de Alzheimer/genética , Enfermedad de Alzheimer/inmunología , Trastornos Mentales/complicaciones , Trastornos Mentales/genética , Polimorfismo de Nucleótido Simple , Anciano , Anciano de 80 o más Años , Enfermedad de Alzheimer/complicaciones , Enfermedad de Alzheimer/psicología , Comorbilidad , Femenino , Estudios de Asociación Genética , Predisposición Genética a la Enfermedad , Grecia , Humanos , Italia , Masculino , Trastornos Mentales/inmunología , Escala del Estado Mental , Escalas de Valoración Psiquiátrica
20.
J Clin Exp Neuropsychol ; 38(1): 23-39, 2016.
Artículo en Inglés | MEDLINE | ID: mdl-26588427

RESUMEN

Rey's Auditory Verbal Learning Test (RAVLT) is a widely used neuropsychological test to assess episodic memory. In the present study we sought to establish normative and discriminative validity data for the RAVLT in the elderly population using previously adapted learning lists for the Greek adult population. We administered the test to 258 cognitively healthy elderly participants, aged 60-89 years, and two patient groups (192 with amnestic mild cognitive impairment, aMCI, and 65 with Alzheimer's disease, AD). From the statistical analyses, we found that age and education contributed significantly to most trials of the RAVLT, whereas the influence of gender was not significant. Younger elderly participants with higher education outperformed the older elderly with lower education levels. Moreover, both clinical groups performed significantly worse on most RAVLT trials and composite measures than matched cognitively healthy controls. Furthermore, the AD group performed more poorly than the aMCI group on most RAVLT variables. Receiver operating characteristic (ROC) analysis was used to examine the utility of the RAVLT trials to discriminate cognitively healthy controls from aMCI and AD patients. Area under the curve (AUC), an index of effect size, showed that most of the RAVLT measures (individual and composite) included in this study adequately differentiated between the performance of healthy elders and aMCI/AD patients. We also provide cutoff scores in discriminating cognitively healthy controls from aMCI and AD patients, based on the sensitivity and specificity of the prescribed scores. Moreover, we present age- and education-specific normative data for individual and composite scores for the Greek adapted RAVLT in elderly subjects aged between 60 and 89 years for use in clinical and research settings.


Asunto(s)
Envejecimiento/fisiología , Escolaridad , Memoria Episódica , Aprendizaje Verbal/fisiología , Estimulación Acústica , Anciano , Anciano de 80 o más Años , Femenino , Grecia/epidemiología , Humanos , Masculino , Persona de Mediana Edad , Pruebas Neuropsicológicas , Valores de Referencia , Reproducibilidad de los Resultados , Estadísticas no Paramétricas
SELECCIÓN DE REFERENCIAS
DETALLE DE LA BÚSQUEDA