Video Experimental Relacionado
Updated: Sep 3, 2026

07:27
Olfactory Assays for Mouse Models of Neurodegenerative Disease
Published on: August 25, 2014
Pérdidas del gusto y el olfato en el envejecimiento normal y en enfermedades
1Department of Psychiatry, Duke University Medical Center, Durham, NC 27710, USA. sss@acpub.duke.edu
JAMA
|October 29, 1997
Resumen
La disminución de los quimiosensores, incluidos el gusto y el olfato, es común en los adultos mayores. Esto puede afectar la nutrición, la seguridad y la calidad de vida, pero la mejora del sabor puede ayudar.
Área de la Ciencia:
- Gerontología Gerontología.
- La neurociencia es la neurociencia.
- La ciencia sensorial es la ciencia sensorial.
Sus antecedentes:
- Los cambios relacionados con la edad tienen un impacto significativo en los sentidos del gusto y el olfato.
- Estas alteraciones sensoriales pueden afectar el bienestar y los resultados de salud de un adulto mayor.
Objetivo del estudio:
- Revisar exhaustivamente la literatura científica sobre las alteraciones del gusto y el olfato en los ancianos.
- Explorar las causas, el diagnóstico, el pronóstico y el tratamiento de estos déficits quimiosensoriales.
Principales métodos:
- Una extensa búsqueda en la literatura de MEDLINE (1966-1997) utilizando los términos relevantes de MeSH.
- La inclusión de informes originales y artículos de revisión frecuentemente citados.
- Revisión sistemática, tabulación y resumen de los datos extraídos en función de la calidad y la relevancia clínica.
Principales resultados:
- Las causas comunes incluyen el envejecimiento normal, enfermedades (por ejemplo, la enfermedad de Alzheimer), medicamentos, cirugía y factores ambientales.
- Los déficits de gusto y olfato disminuyen el disfrute de los alimentos, lo que plantea riesgos de deficiencias nutricionales e inmunológicas.
- Estas disminuciones pueden conducir a una intoxicación alimentaria accidental o a una exposición química peligrosa.
Conclusiones:
- Las deficiencias quimiosensoriales son frecuentes en los ancianos, afectando la vida cotidiana y la salud.
- Intervenciones como el uso de alimentos con sabor mejorado pueden mejorar la ingesta de alimentos, el disfrute y el estado inmunológico.
- Abordar la pérdida del gusto y el olfato es crucial para mantener la salud y la calidad de vida de los adultos mayores.
Videos de Conceptos Relacionados
Olfaction
The sense of smell is achieved through the activities of the olfactory system. It starts when an airborne odorant enters the nasal cavity and reaches olfactory epithelium (OE). The OE is protected by a thin layer of mucus, which also serves the purpose of dissolving more complex compounds into simpler chemical odorants. The size of the OE and the density of sensory neurons varies among species; in humans, the OE is only about 9-10 cm2.
The olfactory receptors are embedded in the cilia of the...
The olfactory receptors are embedded in the cilia of the...
The Effect of Aging on Tissues
Several body functions deteriorate with age. The external signs of aging are easily identifiable. For example, the skin becomes dry, less elastic, and thins out, forming wrinkles. The skin of the face begins to appear looser due to a decrease in the levels of elastic and collagen fibers in the connective tissue. Additionally, melanin production in the hair follicle decreases with age, resulting in gray hair. Moreover, the senses of sight and hearing decline, so glasses and hearing aids may...
Taste Buds and Receptors
Gustation, or the sense of taste, is intrinsically linked to the anatomical structures located on the tongue. This organ's surface, along with the entirety of the oral cavity, is adorned with stratified squamous epithelium. Evident on the tongue are elevated structures known as papillae (singular = papilla), which house the mechanisms for the transduction of gustatory stimuli. Four distinct types of papillae exist, each identified by their unique morphological attributes: the circumvallate,...
Aging
Aging is a complex biological phenomenon influenced by various processes that affect cellular and systemic functions. Several prominent theories attempt to explain its mechanisms, highlighting cellular limitations, oxidative damage, and hormonal changes as central factors in aging.
Cellular Clock Theory
The cellular clock theory posits that the human lifespan is closely tied to the finite capacity of cells to divide, a phenomenon governed by telomeres, which are protective caps at the ends of...
Cellular Clock Theory
The cellular clock theory posits that the human lifespan is closely tied to the finite capacity of cells to divide, a phenomenon governed by telomeres, which are protective caps at the ends of...
Alzheimer Disease l: Introduction
Alzheimer disease is a chronic, progressive, and irreversible neurodegenerative disorder and the most common cause of dementia in older adults. It leads to gradual neuronal loss, causing cognitive decline, behavioral changes, and loss of functional independence.Risk Factors and EtiologyThe disease is multifactorial. Age is the strongest risk factor, with prevalence doubling every 5 years after age 65. Genetic factors include mutations in genes such as APP, PSEN1, and PSEN2, which are associated...
Dementia l: Introduction
Dementia is an acquired, progressive syndrome characterized by a decline in multiple cognitive domains severe enough to impair daily functioning and reduce independence. Although memory loss is a central feature, the diagnosis requires additional deficits involving language, executive function, visuospatial skills, judgment, calculation, or abstract reasoning. These cognitive impairments reflect underlying neurodegenerative or vascular processes that gradually disrupt neuronal networks...

