Proteostasis disruption and senescence in Alzheimer's disease pathways to neurodegeneration.

Alzheimer's Disease (AD) is a progressive neurological disease associated with behavioral abnormalities, memory loss, and cognitive impairment that cause major causes of dementia in the elderly. The pathogenetic processes cause complex effects on brain function and AD progression. The proper protein homeostasis, or proteostasis, is critical for cell health. AD causes the buildup of misfolded proteins, particularly tau and amyloid-beta, to break down proteostasis, such aggregates are toxic to neurons and play a critical role in AD pathogenesis. The rise of cellular senescence is accompanied by aging, marked by irreversible cell cycle arrest and the release of pro-inflammatory proteins. Senescent cell build-up in the brains of AD patients exacerbates neuroinflammation and neuronal degeneration. These cells senescence-associated secretory phenotype (SASP) also disturbs the brain environment. When proteostasis failure and cellular senescence coalesce, a cycle is generated that compounds each other. While senescent cells contribute to proteostasis breakdown through inflammatory and degradative processes, misfolded proteins induce cellular stress and senescence. The principal aspects of the neurodegenerative processes in AD are the interaction of cellular senescence and proteostasis failure. This review explores the interconnected roles of proteostasis disruption and cellular senescence in the pathways leading to neurodegeneration in AD.

Impact of ecDNA: A mechanism that directs tumorigenesis in cancer drug Resistance-A review.

Extrachromosomal DNA (ecDNA) is often found in cancerous cells, and numerous scientific investigations have already shown that ecDNA-mediated oncogene amplification which contributes to cancer therapy resistance. This ecDNA is found to be essential for enhancing gene transcription and resistance to chemotherapeutic drugs, as well as promoting tumor heterogeneity and reversing tumor phenotypes, suggesting that it plays a key role in carcinogenesis. The ecDNA induces tumors to become hostile which results in a lower survival rate and chemotherapy tolerance. It also holds the potential as a target for treatment or diagnostic procedure of tumors. The review describes the properties and origins of ecDNA, as well as how it affects carcinogenesis, its function in cancer etiology and progression, and its therapeutic value. Propagation of oncogenes and resistance genes situated in extra-chromosomal DNA has been discovered to become one of the primary causes of intra-tumor genetic heterogeneity and may result in a threshold of probable evolutionary adaptation in many investigations.

The Types and Pattern of Use of Mobile Health Applications Among the General Population: A Cross-Sectional Study from Selangor, Malaysia.

PURPOSE: The aims of this study are to explore the types and patterns of use of health mobile apps among pharmacy clients in Selangor, Malaysia, and to explore the users' experiences and views regarding the benefits of and issues with the use of the health apps. PATIENTS AND METHODS: A cross-sectional survey was conducted with 278 pharmacy clients who were using health apps on their smartphones. A survey was developed, piloted, and rolled out, comprised of socio-demographic characteristics, information regarding the common types and the pattern of health app use, the benefits of health apps, and issues that users faced while using these apps. Statistical analysis was performed using IBM SPSS version 21. RESULTS: The mean (±SD) age of health app users was 29.8 (±11.74) years old, and over half of them (51.8%) were male, while less than half were female (48.2%). There were 48 different types of mobile health apps used by the participants in this study. The two most common were multi-purpose general health apps (53.6%) and fitness apps (38.1%). In terms of pattern of use, 33.5% of the participants reported using their health apps daily, 36.7% at least once weekly, and 25.2% monthly. The main benefits reported by the users were tracking of health status (47%), motivation (41%), and knowledge about health and fitness (9%). The main issues reported by the participants included inaccuracy of the app (24%), inconvenience (20.7%), and not being user-friendly (18.5%). CONCLUSION: The study showed that the participants used many different types of mobile health apps for several purposes, including general health, wellness, fitness, and self-management of diseases. These apps helped the participants to track their health-related activities and motivated them to maintain their wellness and fitness. Further areas of improvement were identified to ensure evidence-based and effective utilization of apps to achieve required health outcomes.

Revolutionizing polymer-based nanoparticle-linked vaccines for targeting respiratory viruses: A perspective.

Viral respiratory tract infections have significantly impacted global health as well as socio-economic growth. Respiratory viruses such as the influenza virus, respiratory syncytial virus (RSV), and the recent SARS-CoV-2 infection (COVID-19) typically infect the upper respiratory tract by entry through the respiratory mucosa before reaching the lower respiratory tract, resulting in respiratory disease. Generally, vaccination is the primary method in preventing virus pathogenicity and it has been shown to remarkably reduce the burden of various infectious diseases. Nevertheless, the efficacy of conventional vaccines may be hindered by certain limitations, prompting the need to develop novel vaccine delivery vehicles to immunize against various strains of respiratory viruses and to mitigate the risk of a pandemic. In this review, we provide an insight into how polymer-based nanoparticles can be integrated with the development of vaccines to effectively enhance immune responses for combating viral respiratory tract infections.