Diagnostic accuracy of cognitive screening tools validated for older adults in Iran: a systematic review and meta-analysis

BACKGROUND

This systematic review aims to comprehensively assess the diagnostic accuracy of cognitive screening tools validated for older adults in Iran, providing evidence-based recommendations for clinicians and researchers.

METHODS

A comprehensive search in March 2023 across Web of Science, PubMed, Scopus, ScienceDirect, SID, IranMedex, and IranDoc, enhanced by hand-searching references and Google Scholar, identified cross-sectional studies on cognitive screening in Iranian seniors. We assessed diagnostic accuracy, cognitive domains, and test strengths and weaknesses. A bivariate random-effects meta-analysis provided summary estimates and 95% confidence intervals, illustrated in forest plots.

RESULTS

Our review, derived from an initial screening of 38 articles, focused on 17 studies involving 14 cognitive screening tools and participant counts from 60 to 350, mostly from specialized clinics. The MMSE was the only tool examined in at least three studies, prompting a meta-analysis revealing its sensitivity at 0.89 and specificity at 0.77 for dementia detection, albeit amidst significant heterogeneity (I^2 > 80%). ACE-III demonstrated the highest diagnostic accuracy for MCI and dementia, while MoCA's performance was deemed adequate for MCI and excellent for dementia. High bias risk in studies limits interpretation.

CONCLUSION

This review identifies key cognitive tools for dementia and MCI in Iranian older adults, tailored to educational levels for use in primary and specialized care. It emphasizes the need for further validation to enhance diagnostic precision across diverse settings, within a concise framework prioritizing brevity and accuracy for clinical applicability.

Amyloid-induced neurodegeneration: A comprehensive review through aggregomics perception of proteins in health and pathology

Amyloidosis of protein caused by fibrillation and aggregation are some of the most exciting new edges not only in protein sciences but also in molecular medicines. The present review discusses recent advancements in the field of neurodegenerative diseases and therapeutic applications with ongoing clinical trials, featuring new areas of protein misfolding resulting in aggregation. The endogenous accretion of protein fibrils having fibrillar morphology symbolizes the beginning of neuro-disorders. Prognostic amyloidosis is prominent in numerous degenerative infections such as Alzheimer's and Parkinson's disease, Amyotrophic lateral sclerosis (ALS), etc. However, the molecular basis determining the intracellular or extracellular evidence of aggregates, playing a significant role as a causative factor in neurodegeneration is still unclear. Structural conversions and protein self-assembly resulting in the formation of amyloid oligomers and fibrils are important events in the pathophysiology of the disease. This comprehensive review sheds light on the evolving landscape of potential treatment modalities, highlighting the ongoing clinical trials and the potential socio-economic impact of novel therapeutic interventions in the realm of neurodegenerative diseases. Furthermore, many drugs are undergoing different levels of clinical trials that would certainly help in treating these disorders and will surely improve the socio-impact of human life.

Nursing students' attitudes and associated factors towards older people in Heilongjiang Province, northern China: A cross-sectional study

Aim

Attitudes toward older persons could affect services that are provided to them and change the value of the care they receive. The attitude of nursing students toward older persons is very important as it will affect their care of older patients in future. However, in China, the attitude of higher vocational nursing students toward older persons has not been widely studied. The purpose of this study is to explore the attitudes and factors toward older people among nursing students in higher vocational colleges in Heilongjiang Province.

Design

A cross‐sectional study.

Methods

A cross‐sectional study was conducted using cluster sampling. A total of 1106 nursing students from two higher vocational colleges in Heilongjiang Province participated. Multiple linear regression analysis was conducted to identify the factors influencing nursing students’ attitudes toward older people.

Conclusion

This study showed that the vocational college nursing students have a positive attitude towardolder persons. However, the proportion of respondents taking care of older persons as their first choice in their future career needs to be increased. Advanced vocational colleges should pay attention to the attitudes of nursing students toward older persons, and strengthen the education of career development planning, which has practical significance in meeting the diversified health needs of older persons and ensuring healthy aging.

Pharmacogenetic and Association Studies on the Influence of HLA Alleles and Rivastigmine on the Iranian Patients with Late-Onset Alzheimer's Disease

Alzheimer's disease (AD) is a progressive neurodegenerative disorder affecting cognitive function. A number of allelic genes from HLA complex have shown variable associations with AD in different populations. In this study, we investigated the association of DQB1*06:00/x, DRB1*04:00/x, DRB1*15:00/x, and B*07:00/x genotypes with AD and their relevance to the efficacy of rivastigmine treatment in the Iranian population. Our findings suggest that DQB1*06:00/x genotype offers strong protection against AD (P = 0.0074), while B*07:00/x genotype imposes a significant susceptibility for sporadic Alzheimer's disease (SAD) (P = 0.009). Interestingly, B*07:00/x genotype does not show any apparent associations with familial Alzheimer's disease (FAD). Our studies also suggest a pharmacogenetic relationship between drug treatment and presence of a particular genotype in the Iranian LOAD patient population. The Clinical Dementia Rating analysis showed that LOAD patients carrying DRB1*04:00/x genotype tend to display a downward trend in the disease severity and symptoms after 2-year follow-up with rivastigmine treatment. Moreover, in our total patient population, the carriers of DQB1*06:00/x and B*07:00/x alleles have better and worse responses to rivastigmine respectively. We also measured the clinical relevance of the testing for these genotypes employing prevalence-corrected positive predictive value (PcPPV) formula. The PcPPV of testing for DQB1*06:00/x in the Iranian LOAD patients was 1.17% which means that people carrying this genotype have half of the probability of the absolute risk for developing LOAD, whereas the PcPPV of testing for B*07:00/x was 4.45% for SAD, which can be interpreted as a doubling chance for developing LOAD among the Iranian population carrying this genotype. These results also suggest that DQβ1 peptide containing positively charged AAs histidine³⁰ and arginine⁵⁵ and HLA class I β chain containing negatively charges aspartic acid¹¹⁴ and glutamic acid^45,152 in their binding groove plays important roles in protection against and susceptibility for LOAD respectively.

The effects of a Namaste care program on quality of life: A pilot study in Iranian women with late-stage Alzheimer's disease

The current study aimed to investigate the effects of a Namaste care program on the quality of life of 25 women with late-stage Alzheimer's disease. The program was implemented two hours daily and four days per week for six months in a nursing facility, Tehran, Iran. Women's quality of life was measured using the Persian version of the Quality of Life in Late-Stage Dementia scale before and after the program implementation. After a six-month intervention with the Namaste care program, the total score of quality of life significantly decreased (17.79 ± 1.10 at the end of trial compared with 24.67 ± 1.62 at baseline, P = 0.01), indicating improved quality of life. This effect was obtained after controlling for demographic variables and comorbidities. Hence, it seems that the Namaste care program might be an effective supportive method to improve the quality of life of women with late-stage Alzheimer's disease in Iranian culture. However, further large-sample studies are needed to investigate the generalizability of the findings.

The effects of empathy skills training on nursing students' empathy and attitudes toward elderly people

BACKGROUND

Nursing students' empathy and positive attitudes toward elderly people could help provide improved elderly care in their future practice. This study aimed to investigate the effects of empathy skills training on nursing students' empathy and attitudes toward elderly people.

METHODS

This quasi-experimental study was conducted in Yasuj, Iran in 2014. The sample consisted of 63 students at Hazrat Zeinab Nursing and Midwifery School who were randomly divided into a control (n = 31) and an intervention group (n = 32). The intervention group attended an eight-hour workshop on empathy skills that was presented through lectures, demonstration, group discussions, scenarios, and questioning. The data were collected using the Persian versions of Kogan's Attitudes towards Old People Scale and Jefferson Scale of Physician Empathy-Health Professionals Version. Then, the data were entered into the SPSS software, version 19 and were analyzed using descriptive statistics, chi-square test, t-test, and repeated measures analysis of variance.

RESULTS

The results showed that the empathy skills training program had a significant impact on the students' mean scores of empathy and attitudes toward elderly people (p < 0.001). The intervention group's mean score of empathy increased from 77.8 (SD = 10.7) before the intervention to 86 (SD = 7.3) immediately after that and 85.2 (SD = 8.9) 2 months later. Their mean score of attitude also increased from 110.8 (SD = 10.9) before the intervention to 155.2 (SD = 23.4) immediately after the intervention and 158.6 (SD = 23.2) 2 months later. Additionally, the empathy and attitude scores of the intervention group were significantly higher than those for control group immediately and 2 months after the intervention.

CONCLUSIONS

Empathy skills training improved the nursing students' empathy and attitudes towards elderly people. Therefore, empathy training is recommended to be incorporated into the undergraduate nursing curriculum.