A review on causes, stages and treatments used in alzheimerand#039;s disease
Journal name: World Journal of Pharmaceutical Research
Original article title: A review on causes, stages and treatments used in alzheimer's disease
The WJPR includes peer-reviewed publications such as scientific research papers, reports, review articles, company news, thesis reports and case studies in areas of Biology, Pharmaceutical industries and Chemical technology while incorporating ancient fields of knowledge such combining Ayurveda with scientific data.
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Diptesh T. Patil, Aditya Singh and Dr. Vanita Kanase
World Journal of Pharmaceutical Research:
(An ISO 9001:2015 Certified International Journal)
Full text available for: A review on causes, stages and treatments used in alzheimer's disease
Source type: An International Peer Reviewed Journal for Pharmaceutical and Medical and Scientific Research
Doi: 10.20959/wjpr201712-9668
Copyright (license): WJPR: All rights reserved
Summary of article contents:
Introduction
Alzheimer's disease (AD) is a chronic progressive neurodegenerative disorder that significantly impairs an individual's cognitive abilities, including memory, reasoning, and daily functioning. With the symptoms worsening over time, early detection and appropriate treatment become crucial. The disease can lead to three main categories of symptoms: cognitive dysfunction (memory loss, language difficulties, and executive dysfunction), non-cognitive symptoms (depression, hallucinations, and agitation), and difficulties with daily living activities, making it imperative to address both pharmacological and non-pharmacological treatment options.
The Cholinergic Hypothesis
The cholinergic hypothesis is one of the longstanding theories explaining the pathophysiology of Alzheimer’s disease. It posits that a deficit in the neurotransmitter acetylcholine (ACh) is central to the development of AD. Reduced synthesis of ACh leads to impaired cholinergic transmission, which correlates with the cognitive symptoms of AD. Most of the current pharmacotherapies, including cholinesterase inhibitors like Donepezil, Rivastigmine, and Galantamine, target this hypothesis by preventing the breakdown of acetylcholine, thereby enhancing its availability in synaptic clefts and alleviating cognitive deficits. This approach highlights the importance of neurotransmitter balance in managing symptoms of Alzheimer’s.
The Amyloid and Tau Hypotheses
Two significant hypotheses that illustrate the pathological mechanisms underlying AD are the amyloid hypothesis and the tau hypothesis. The amyloid hypothesis suggests that the accumulation of amyloid-beta (Aβ) plaques in the brain is a primary event in AD onset. These plaques disrupt cellular functioning and trigger neurodegeneration. Conversely, the tau hypothesis emphasizes the role of abnormal tau protein aggregates, known as neurofibrillary tangles, which damage the neuronal cytoskeleton and compromise neuronal transport and communication. Both hypotheses have directed research towards novel therapeutic targets aimed at reducing amyloid and tau pathology, signaling a shift in treatment strategies through the development of drugs like gamma-secretase inhibitors.
Progression and Stages of Alzheimer's Disease
The progression of Alzheimer’s disease can be divided into seven distinct stages, from normal cognitive function to severe dementia. Initially, individuals may experience normal age-related forgetfulness. As the disease advances, mild cognitive impairment emerges, characterized by difficulties in memory and problem-solving. Further stages involve increasing levels of confusion and assistance needed for daily activities, culminating in severe Alzheimer’s, where patients may lose the ability to communicate and become unresponsive. Recognizing these stages is vital for caregivers and health professionals to provide appropriate support and care tailored to the patient's level of impairment.
Conclusion
Alzheimer's disease remains a pressing global healthcare challenge, with no cure currently available. However, ongoing research offers hope through the investigation of new pharmacological treatments and lifestyle modifications that can alleviate symptoms and improve patients' quality of life. Understanding key concepts such as the cholinergic hypothesis, amyloid and tau pathologies, and the disease's progression can aid in developing holistic treatment approaches. As the science of AD advances, early diagnosis and integrated care will be pivotal in managing this complex and debilitating condition.
FAQ section (important questions/answers):
What are the main symptoms of Alzheimer's disease?
Alzheimer's disease symptoms include memory loss, language difficulties, confusion, and behavioral changes, which progress from mild issues to severe cognitive impairment, affecting daily activities and personality.
What are the stages of Alzheimer's disease progression?
Alzheimer's disease progresses through seven stages: normal functioning, mild forgetfulness, mild cognitive impairment, mild Alzheimer’s, moderate Alzheimer’s, moderately severe Alzheimer's, and severe Alzheimer’s, culminating in severe cognitive decline.
What pharmacological treatments are available for Alzheimer's disease?
Current treatments for Alzheimer's include cholinesterase inhibitors like Donepezil and Rivastigmine, which enhance acetylcholine levels, and Memantine, an NMDA receptor antagonist that protects against neurotoxicity from excess glutamate.
What are the main hypotheses explaining the causes of Alzheimer's disease?
Key hypotheses include genetic factors, cholinergic dysfunction, amyloid beta deposits, tau pathology, and additional factors like blood-brain barrier dysfunction and environmental influences such as smoking and pollution.
What lifestyle changes can help manage Alzheimer's disease symptoms?
Maintaining a healthy diet rich in antioxidants, engaging in regular physical activity, staying socially active, and managing stress can be beneficial for individuals with Alzheimer's disease.
Are there any new drugs under evaluation for Alzheimer's disease treatment?
Research is ongoing for several new treatments, including nicotinic receptor agonists, antioxidants like vitamin E, and PPAR gamma agonists, which show promise in addressing Alzheimer's disease's underlying causes.
Glossary definitions and references:
Scientific and Ayurvedic Glossary list for “A review on causes, stages and treatments used in alzheimerand#039;s disease”. This list explains important keywords that occur in this article and links it to the glossary for a better understanding of that concept in the context of Ayurveda and other topics.
1) Disease:
Disease refers to a pathological condition of a bodily part, an organism, or system resulting from various causes, such as infections, genetic defects, or environmental factors. Alzheimer's disease is a prominent neurodegenerative disorder characterized by cognitive dysfunction, memory loss, and behavioral changes, highlighting its profound effects on the patient's health and quality of life.
2) Drug:
A drug is a chemical substance used to treat, cure, prevent, or diagnose a disease or to enhance physical or mental well-being. In the context of Alzheimer's disease, several drugs, particularly cholinesterase inhibitors and NMDA receptor antagonists, are employed to manage symptoms and improve cognitive function, demonstrating the role of pharmacotherapy.
3) Patil:
Diptesh T. Patil is an academic associated with the Oriental College of Pharmacy in Maharashtra, India. His contributions to Alzheimer’s research are highlighted through reviews discussing the causes, stages, and treatments of the disease, shedding light on current and emerging therapeutic strategies in the field of pharmacology.
4) Food:
Food plays a crucial role in maintaining cognitive health and overall wellness. In Alzheimer's management, certain foods like antioxidants, omega-3 fatty acids, and anti-inflammatory herbs are encouraged for their potential neuroprotective effects, while other processed foods are discouraged, emphasizing the link between diet and disease progression.
5) Blood:
Blood is the liquid connective tissue transporting essential nutrients, oxygen, and waste products throughout the body. Its significance in Alzheimer's lies in the study of blood-brain barrier integrity and cerebrovascular health, which can influence neurodegenerative processes, making it a critical factor in understanding and treating the disease.
6) Language:
Language is a complex cognitive function that can be severely impaired in Alzheimer's disease. Patients often struggle with word-finding, understanding, and forming sentences, reflecting cognitive decline. This difficulty not only impacts communication but can also cause frustration and emotional distress, highlighting the importance of language preservation strategies in care.
7) Learning:
Learning is the process of acquiring new, or modifying existing, knowledge and skills. In Alzheimer’s patients, learning capabilities are often diminished due to cognitive decline, affecting daily functioning. Therefore, therapeutic interventions may focus on enhancing memory and understanding to improve the quality of life and sustain cognitive engagement.
8) Pharmacological:
Pharmacological treatments involve the use of drugs to modulate biological functions. In Alzheimer's disease, pharmacological approaches aim at alleviating symptoms, enhancing neurotransmission, and potentially slowing disease progression. Understanding these treatments is crucial for developing effective therapeutic strategies that can improve patient outcomes.
9) Activity:
Activity refers to the actions or functioning of individuals. Cognitive activities are essential in Alzheimer’s care as they engage the brain, potentially slowing cognitive decline. Encouraging patients to participate in activities can help maintain independence and foster social interaction, which are vital for emotional well-being.
10) Channel:
Channel in the context of Alzheimer's may refer to ion channels and neurotransmitter pathways that are altered in the disease. For example, NMDA channels are critical for memory function; blocking overexcited pathways may prevent neurotoxicity, underscoring the importance of maintaining healthy neurotransmission in managing cognitive disorders.
11) Death:
Death is the cessation of all biological functions that sustain a living organism. In the context of Alzheimer’s, the disease is terminal, with progression leading to severe cognitive impairments and ultimately death. Discussing the disease's impact on mortality reinforces the importance of early diagnosis and effective management strategies.
12) Pharmacotherapy:
Pharmacotherapy refers to the treatment of disease through the administration of drugs. In Alzheimer’s, pharmacotherapy includes a range of medications aimed at managing symptoms and slowing disease progression, showcasing the importance of ongoing research to develop new and effective therapeutic options for improved patient care.
13) Pharmacology:
Pharmacology is the branch of medicine concerned with the study of drug action. It underpins the understanding of how medications used in Alzheimer’s work on a biochemical level, informing the development of new treatments aimed at ameliorating symptoms and managing the disease’s progression effectively.
14) Maharashtra (Maharastra, Maha-rashtra):
Maharashtra is a state in western India, home to many educational and research institutions, including the Oriental College of Pharmacy. Research conducted in this region contributes to the global understanding of Alzheimer’s disease, particularly in pharmacological advancements and treatment strategies tailored to local patient demographics.
15) Dressing:
Dressing refers to the ability to groom oneself, which can be affected in Alzheimer’s patients. As the disease progresses, individuals may require assistance with basic activities of daily living, including dressing, emphasizing the need for caregiver support and the creation of a safe environment for patients.
16) Coconut (Cocoanut):
Coconut, particularly its oil, is highlighted for its potential health benefits, including cognitive effects that may support brain function. Medium-chain triglycerides (MCTs) found in coconut oil can serve as an alternative energy source for brain cells, particularly in Alzheimer's patients who may struggle with glucose metabolism.
17) Milk:
Milk is a nutritious beverage that plays a role in overall health, including bone and brain health. In discussions on diet for Alzheimer's patients, the consideration is given to the effects of dairy consumption, with some recommendations advocating for alternatives to mitigate any potential adverse effects on cognitive function.
18) Pur:
Poor cognitive function is a hallmark of Alzheimer’s disease, affecting memory, thinking, and daily functioning. The progressive nature of the disease can lead to increased dependency on caregiver support, and understanding these challenges is vital for developing management plans that address both cognitive and emotional needs.
19) Life:
Life in the context of Alzheimer's disease encompasses the quality of existence for patients as cognitive functions decline. Managing Alzheimer’s effectively involves consideration of the emotional, psychological, and physical aspects of life, fostering an environment conducive to dignity, respect, and quality of life for affected individuals.
20) Accumulation (Accumulating, Accumulate):
Accumulation refers to the buildup of pathological substances, such as amyloid plaques and tau tangles, in the brains of Alzheimer's patients. These accumulations disrupt normal neuronal function, leading to progressive cognitive decline and underlining the need for targeted therapeutic approaches to prevent or reduce such pathological changes.
21) Depression:
Depression is a common comorbidity in Alzheimer’s patients and significantly impacts their quality of life. Recognizing and managing depression in these individuals is essential as it complicates treatment, exacerbates cognitive decline, and highlights the need for holistic care approaches that address both cognitive and emotional health.
22) Medicine:
Medicine is the field concerned with the diagnosis, treatment, and prevention of diseases. In Alzheimer’s disease, advancements in medicine aim to enhance understanding of the disease mechanisms and develop effective pharmacological interventions, emphasizing the importance of ongoing research and clinical application in patient care.
23) Delusion (Deluded):
Delusions are false beliefs commonly experienced by Alzheimer's patients, reflecting cognitive dysfunction characteristic of the disease. These may manifest as paranoia or misunderstandings about reality, requiring caregivers to employ sensitive approach and ongoing support to help manage these challenging symptoms effectively.
24) Science (Scientific):
Science plays a critical role in understanding diseases like Alzheimer's by investigating biological mechanisms, potential treatments, and therapeutic interventions. Scientific studies contribute to the development of new drugs and treatment protocols, highlighting the importance of empirical research to improve patient care and outcomes.
25) Nature:
Nature refers to the natural environment, which can impact human health. In the context of Alzheimer’s, studies on natural compounds, such as antioxidants found in certain foods, show promise in neuroprotection, revealing the value of integrating natural resources into treatment and prevention strategies.
26) Reason:
Reason refers to the cognitive ability to process information and make judgments. This ability may be severely impaired in individuals with Alzheimer's disease, affecting their decision-making and understanding of situations, which impacts their daily lives and interactions with caregivers and family members.
27) Water:
Water is essential for overall health, including optimal brain function. Staying hydrated is crucial for Alzheimer's patients as dehydration can worsen cognitive deficits and lead to confusion. Ensuring adequate water intake is an important aspect of patient care and management in Alzheimer’s disease.
28) Sugar:
Sugar, particularly refined sugars, is associated with various health problems, including cognitive decline. In Alzheimer's management, reducing sugar intake is encouraged to prevent exacerbating symptoms or influencing metabolic pathways that may lead to increased neurodegeneration.
29) Study (Studying):
Study refers to systematic investigation and examination of phenomena to gain knowledge. Research studies on Alzheimer's disease are vital in uncovering the mechanisms behind cognitive decline, exploring new treatment avenues, and informing clinical practices that aim to improve quality of life for affected individuals.
30) Beta:
Beta relates to beta-amyloid, a protein that forms plaques in the brains of Alzheimer's patients. The accumulation of beta-amyloid is considered central to the pathology of Alzheimer's, making it an important target for therapeutic intervention and understanding disease progression.
31) Mud:
Mood refers to a temporary state of mind or feeling, which can be significantly affected in Alzheimer's patients. Emotional health is critical; fluctuations in mood often complicate caregiving and management of the disease, necessitating strategies to address emotional well-being alongside cognitive symptoms.
32) Withania somnifera:
Withania somnifera, commonly known as ashwagandha, is an herb that may possess therapeutic properties valuable in managing stress and cognitive decline. Its potential neuroprotective effects warrant further exploration in altered brain function associated with Alzheimer’s disease, emphasizing the growing interest in herbal remedies.
33) Curcuma longa:
Curcuma longa, or turmeric, contains curcumin, which has shown potential anti-inflammatory and neuroprotective properties. It may help mitigate cognitive deterioration in Alzheimer's by reducing brain inflammation and oxidative stress, suggesting its inclusion in dietary strategies for cognitive health.
34) Allium sativum:
Allium sativum, commonly known as garlic, is acclaimed for its numerous health benefits, including potential neuroprotective effects. Its antioxidant properties may help combat oxidative stress in the brain, making it a relevant dietary consideration for Alzheimer's management.
35) Transmission:
Transmission relates to the process of conveying signals in the nervous system, critical for cognitive functions. Disruptions in neurotransmission are central to cognitive deficits in Alzheimer's, leading researchers to develop therapies aimed at enhancing and restoring synaptic communication in affected individuals.
36) Surrounding:
Surrounding pertains to the environment and context in which individuals live. In Alzheimer’s care, creating a supportive and safe surrounding can significantly improve the quality of life and facilitate better interactions, thus playing an essential role in overall patient management.
37) Developing:
Developing refers to the process of advancing or emerging new ideas, treatments, or understandings. In Alzheimer's research, developing new pharmacological strategies and interventions is crucial for addressing the complexities of the disease, as ongoing innovation is necessary to improve patient outcomes and enhance care.
38) Substance:
Substance refers to a particular kind of matter with uniform properties. In neuroscience, various substances, such as neurotransmitters and drugs, play critical roles in brain function. Understanding the interactions of these substances is essential for addressing cognitive impairments in Alzheimer's disease.
39) Psychosis:
Psychosis involves impaired relationship with reality, often presenting in Alzheimer’s patients as delusions or hallucinations. Recognizing psychosis in this population is crucial for guiding treatment, as it impacts the overall management of Alzheimer's and ensures holistic care approaches.
40) Cinnamon:
Cinnamon is a spice with potential antioxidant and anti-inflammatory properties. Its inclusion in diets may offer neuroprotective benefits, suggesting its role in a holistic approach to managing Alzheimer's through dietary and lifestyle interventions, emphasizing the importance of natural remedies.
41) Mutation:
Mutation refers to the alteration in the DNA sequence, which can contribute to genetic diseases, including familial Alzheimer's. Understanding the genetic mutations linked to the disease helps in recognizing at-risk populations and developing personalized therapeutic approaches to treatment.
42) Turmeric:
Turmeric is known for its active compound, curcumin, which has anti-inflammatory and neuroprotective qualities. Its potential benefits in Alzheimer's management arise from its ability to combat oxidative stress and inflammation in the brain, making it a valuable addition to dietary strategies in addressing cognitive decline.
43) Relative:
Relative in this context may refer to family members of individuals with Alzheimer’s disease. It emphasizes the impact of the disease on family dynamics and the importance of involving relatives in care discussions and management strategies to support overall emotional and psychological well-being.
44) Meeting:
Meeting signifies the congregating of individuals to discuss or collaborate. It can also denote significant historical figures in Alzheimer’s research, as well as sessions focused on developing care strategies or sharing findings, reinforcing the collaborative efforts in addressing this widespread disease.
45) Anxiety:
Anxiety represents a common emotional response that may significantly affect Alzheimer’s patients, often exacerbating cognitive symptoms and complicating care. Effective management of anxiety is essential to improve quality of life, necessitating integrative approaches that address both cognitive and emotional needs.
46) Aditya:
Aditya Singh is one of the contributors to the research study on Alzheimer’s disease, affiliated with the Oriental College of Pharmacy. His involvement reflects the collaborative academic efforts to explore and advance understanding of Alzheimer’s treatment and management strategies, contributing valuable insights in this field.
47) Vaṇita (Vanita):
Dr. Vanita Kanase is mentioned in the research on Alzheimer’s disease. As the head of pharmacology, her expertise likely guides research efforts aimed at understanding disease mechanisms and developing effective treatments, highlighting the importance of dedicated professionals in addressing the challenges posed by Alzheimer’s.
48) Nausea:
Nausea is a common side effect of many Alzheimer’s medications, particularly cholinesterase inhibitors. Managing nausea is important to maintain patient adherence to treatment regimens, emphasizing the need for supportive measures to enhance quality of life and medication compliance among those affected.
49) Garlic:
Garlic (Allium sativum) is a widely recognized dietary supplement known for its potential health benefits, including cardiovascular support and anti-inflammatory effects. In Alzheimer's research, garlic's antioxidant properties may help protect against oxidative stress, suggesting its use within dietary recommendations for cognitive health.
50) Summer:
Summer represents one of the four seasons, which can affect human health and activity levels. Seasonal changes, including temperature and sunlight exposure, may influence cognitive health, lifestyle habits, and individual preferences in dietary choices regarded as beneficial for Alzheimer's management.
51) Medium:
Medium typically refers to a state or condition in which a substance exists. In the context of Alzheimer's, it could relate to medium-chain triglycerides derived from coconut oil, which are thought to provide alternative energy sources for brain cells impaired by the disease's progression.
52) Animal:
Animal studies are pivotal in Alzheimer's research as they offer insights into disease mechanisms, potential therapeutic targets, and the efficacy of new drugs. Understanding animal models is key for translating research findings into human applications that can enhance treatment strategies for Alzheimer's.
53) Cilli:
Chilli, a spicy pepper, contains capsaicin, a compound with potential health benefits, such as anti-inflammatory properties. Including chilli in diets may support cognitive health and contribute a variety of bioactive compounds that promote overall wellness, suggesting its role in dietary strategies for dementia prevention.
54) Trade:
Trade refers to the buying and selling of goods or services. In pharmaceuticals, trade names of drugs play a critical role in marketing and consumer recognition, making it important to establish a clear understanding of various medication options available for the treatment of Alzheimer’s disease.
55) House:
House symbolizes the living environment of individuals, especially elderly or Alzheimer’s patients. A structured and safe home contributes significantly to the well-being and comfort of patients, underscoring the need for adaptable living spaces that support their cognitive and physical limitations.
56) Kola:
Kola, specifically Centella asiatica or gotu kola, is a plant that may have cognitive-enhancing properties. Its traditional use in medicine suggests a role in supporting memory and mental clarity, making it a subject of interest in herbal treatments for conditions like Alzheimer's disease.
57) Cara:
Cara is likely used in the context of discussing chemical structures, including molecules related to pharmacology. Correct comprehension of molecular interactions is essential for developing drugs and understanding their effectiveness, laying the groundwork for advancements in Alzheimer’s therapy and management.
58) King:
King can symbolize the predominant or most influential entity in a particular context. In discussions of natural substances, referring to certain compounds, like antioxidants found in foods or herbs, as 'kings' of health may denote their superior benefits in protecting cognitive functions in Alzheimer’s patients.
59) Sign:
Sign refers to an indicator or symptom of a condition. In Alzheimer's, cognitive and behavioral changes often serve as signs of the disease's progression. Identifying these signs early is crucial for early intervention and management strategies aimed at improving patient quality of life.
60) Line:
Line may denote a boundary or distinction. In Alzheimer’s discussions, it can refer to the line between normal age-related cognitive decline and pathological decline seen in Alzheimer’s, which is critical for diagnosis, treatment planning, and understanding the disease's nature.
61) Burning (Burn, Burned, Burnt):
Burn may refer to physical or emotional strain experienced by caregivers or patients in Alzheimer’s care. Recognizing and managing the 'burn' of caregiving stress is vital in creating supportive systems that ensure the well-being of both caregivers and patients suffering from cognitive decline.
62) Pole:
Pole often signifies extremes or boundaries. In Alzheimer’s research, it may represent contrasting approaches to understanding and managing the disease, highlighting the divergence between conventional therapies and emerging alternative methods that aim to provide comprehensive care for affected individuals.
Other Science Concepts:
Discover the significance of concepts within the article: ‘A review on causes, stages and treatments used in alzheimerand#039;s disease’. Further sources in the context of Science might help you critically compare this page with similair documents:
Pharmacotherapy, Preventive measure, Alzheimer's disease, Clinical trial, Early detection, Cognitive dysfunction, Neuroprotective properties, Cognitive decline, Epidemiological studies, Antioxidant, Vascular disease, Nutraceutical, Cognitive symptoms, Lifestyle change, Functional disabilities, Pharmacological treatment, Diagnostic test, Donepezil, Cholinergic hypothesis, Chronic progressive neurodegenerative disorder, First line of defence, Non-cognitive symptoms, Tau hypothesis, Memantine, Biomarker studies, Huperzine A, Statin, Cholinesterase inhibitor, Heavy metal chelator.