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When elderly become frail and in need for complex care, they can no longer live independently at home and may be admitted to nursing homes. Various studies have shown that oral health in this population is remarkably poor, which may lead to distressing situations and impacts quality of life. A variety of definitions or descriptions for oral health is used. Without a uniform parameter, it is impossible to determine whether oral health in institutionalized elderly is actually improving or deteriorating over time, as well as the effect of (preventive) interventions. In search for an adequate and clinically applicable parameter to determine oral health in this specific patient group, this scoping review aims to give an overview of the currently used parameters for determining oral health in institutionalized elderly. Ninety different parameters were identified, and 50 parameters were solely used by one study. Only 4 parameters were frequently used (in > 20 studies). The relevance of these parameters for this specific patient group is discussed. To aid the planning and commissioning of future research and patient care, there is an urgent need for an adequate and uniform parameter for oral health determination in institutionalized elderly.
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Salud Bucal , Calidad de Vida , Humanos , Anciano , Casas de Salud , Anciano FrágilRESUMEN
Many older individuals with dementia show care-resistant behavior for oral care. Providing care despite resistance is considered to be involuntary care. The Dutch law, 'Wet zorg en dwang' (care and coercion), states that care must be ceased in the presence of resistance, unless there is (a risk of) serious harm. This study was conducted to gain insight into the attitudes of healthcare providers with regard to involuntary oral care in older individuals with dementia. An online questionnaire consisting of general questions, case specific questions and knowledge questions about the Dutch law was filled out by 392 care providers. In all cases, a discrepancy was seen between the assessment of oral health problems as potentially harmful and the willingness to provide involuntary oral care. Hence, many healthcare providers are aware of the subsequent potential health risks related to not providing care, but are still reluctant to provide involuntary oral care. A large part of the healthcare providers also has a low level of knowledge with regard to the Dutch law 'Wet zorg en Dwang'.
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Demencia , Emociones , Humanos , Anciano , Personal de Salud , Salud BucalRESUMEN
There is growing evidence that spiritual well-being is positively associated with adaptive coping and health. The Spiritual Attitude and Involvement List (SAIL) was developed to measure a sense of connectedness to oneself, the environment and the transcendent as a universal experience. The aim of the current study was to develop a short form of the SAIL (SAIL-SF). A factor analytic approach was adopted to select the items for the SAIL-SF based on earlier studies among nurses (n = 458) and cancer patients (n = 445). The dimensionality, factor-loadings, internal consistency, construct validity and incremental validity of the final SAIL-SF were then evaluated in a new sample of adults (n = 225) participating in a trial assessing a positive psychology intervention. The first study yielded seven items, each representing one of the dimensions of the original SAIL: meaningfulness, trust, acceptance, caring for others, connectedness with nature, transcendent experiences, and spiritual activities. The seven items represented a single meaningful factor in both samples and the factor loadings of the items were adequately high. In the second study, a good fit across the various model indices was found and all items had adequately high factor loadings in a strict unidimensional confirmatory factor model and demonstrated good internal consistency. The SAIL-SF explained 7% of variance in ability to adapt above and beyond emotional, psychological, and social well-being. The current study shows that the SAIL-SF has good psychometric properties, and that spiritual well-being has a unique contribution to the ability to adapt in comparison with other types of well-being.
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Many frail older adults have a poor oral health: unrestorable broken teeth and root remnants with open root canals, commonly associated with periapical and periodontal inflammation, are often seen. Improving oral health in this growing group of frail older adults is a considerable challenge for dental care professionals. Dentists are often uncertain how to deal with root remnants and unrestorable broken teeth in psychogeriatric and/or medically compromised frail older adults. Decisions about the extraction or retention of root remnants should not only be made on the basis of preventing pain and inflammation, but also on the course of disease, life expectancy, cooperation, laws and regulations and other factors that are an issue in geriatric patients but not in regular (healthy) patients. To help oral health care professionals in their treatment choice for this complex patient group, a decision tree was developed in which both root and patient-related factors were included.
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Anciano Frágil , Salud Bucal , Anciano , Humanos , Estado de Salud , Inflamación , Esperanza de Vida , Cuidado Dental para AncianosRESUMEN
BACKGROUND: In patients with severe polycystic liver disease (PLD), there is a need for new treatments. Estrogens and possibly other female sex hormones stimulate growth in PLD. In some patients, liver volume decreases after menopause. Female sex hormones could therefore be a target for therapy. The AGAINST-PLD study will examine the efficacy of the GnRH agonist leuprorelin, which blocks the production of estrogen and other sex hormones, to reduce liver growth in PLD. METHODS: The AGAINST-PLD study is an investigator-driven, multicenter, randomized controlled trial. Institutional review board (IRB) approval was received at the University Medical Center of Groningen and will be collected in other sites before opening these sites. Thirty-six female, pre-menopausal patients, with a very large liver volume for age (upper 10% of the PLD population) and ongoing liver growth despite current treatment options will be randomized to direct start of leuprorelin or to 18 months standard of care and delayed start of leuprorelin. Leuprorelin is given as 3.75 mg subcutaneously (s.c.) monthly for the first 3 months followed by 3-monthly depots of 11.25 mg s.c. The trial duration is 36 months. MRI scans to measure liver volume will be performed at screening, 6 months, 18 months, 24 months and 36 months. In addition, blood will be drawn, DEXA-scans will be performed and questionnaires will be collected. This design enables comparison between patients on study treatment and standard of care (first 18 months) and within patients before and during treatment (whole trial). Main outcome is annualized liver growth rate compared between standard of care and study treatment. Secondary outcomes are PLD disease severity, change in liver growth within individuals and (serious) adverse events. The study is designed as a prospective open-label study with blinded endpoint assessment (PROBE). DISCUSSION: In this trial, we combined the expertise of hepatologist, nephrologists and gynecologists to study the effect of leuprorelin on liver growth in PLD. In this way, we hope to stop liver growth, reduce symptoms and reduce the need for liver transplantation in severe PLD. Trial registration Eudra CT number 2020-005949-16, registered at 15 Dec 2020. https://www.clinicaltrialsregister.eu/ctr-search/search?query=2020-005949-16 .
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Leuprolida , Hepatopatías , Femenino , Humanos , Quistes , Leuprolida/uso terapéutico , Hepatopatías/tratamiento farmacológico , Estudios Multicéntricos como Asunto , Estudios Prospectivos , Ensayos Clínicos Controlados Aleatorios como AsuntoRESUMEN
Cross-sectional studies have shown that elderly with a natural dentition or implant-retained overdenture have better general health outcomes than elderly with conventional dentures. It is not known whether these findings would be confirmed in longitudinal studies of such groups of elderly. Therefore, in this study a large group of elderly (aged 75 and over) with a natural dentition (n = 143,199), an implant-retained overdenture (n = 6,503) or conventional denture (n=18,420) were followed over a period of 8 years. Elderly with conventional dentures had chronic conditions more often, used more medication and had higher healthcare costs. Remarkably, the general health outcomes of elderly with an implant-retained overdenture declined over the period of 8 years. At the time the implant-retained overdenture was placed, their general health profile seemed comparable to that of elderly with a natural dentition, but as time progressed it declined to the level of elderly with conventional dentures.
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Implantes Dentales , Prótesis Dental de Soporte Implantado , Anciano , Estudios Transversales , Atención Odontológica , Prótesis de Recubrimiento , Costos de la Atención en Salud , Humanos , Mandíbula , Satisfacción del PacienteRESUMEN
Although many elderly remain healthy to an advanced age, apparently healthy and robust elderly can quickly become frail as a result of physical or psychological events. With frailty, oral health can quickly deteriorate and treatment is often difficult, with possible consequences for general health and quality of life. To prevent treatment dilemma's at an advanced age, it is advisable to think ahead when making a treatment plan for older patients and to aim for a surveyable oral situation, so in case of illness or care dependency, oral health can be maintained relatively easily. This so-called 'lifetime' dental treatment plan takes into account the various areas of frailty (physical, psychological and social), is predictable and can be modified, and takes life expectancy and general health into consideration. Lifetime dental treatment for the elderly, specifically the periodontally affected, has as yet rarely been discussed in the literature. This article represents a view of such treatment on the basis of clinical expertise.
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Anciano Frágil , Calidad de Vida , Anciano , Atención Odontológica , Evaluación Geriátrica , Estado de Salud , Humanos , Salud BucalRESUMEN
Although ample research has been done on implant-retained overdentures, little is known about the age, health aspects and socio-economic status of patients receiving an implant-retained overdenture for the first time. Therefore, a big data study was set up, in cooperation with Vektis (a Dutch national database for all insured and claimed healthcare), with the aim of investigating the aspects mentioned earlier in patients who received implant-retained overdentures between 2009 and 2016. The study showed that these overdentures were predominantly made for the lower jaw, using a bar attachment system. It also showed they were mainly used for relatively young (55- to 75-year-olds) and healthy patients. It was concluded that relatively few implants are placed to support implant-retained overdentures in patients over 85 years of age and in those with diabetes mellitus, although neither are contraindicated.
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Implantes Dentales , Arcada Edéntula , Estudios Transversales , Prótesis Dental de Soporte Implantado , Retención de Dentadura , Prótesis de Recubrimiento , Humanos , MandíbulaRESUMEN
In a consensus meeting (September 2019) of the three Dutch and the two Flemish dental schools their current education programmes on gerodontology were presented and discussed. The aim was to examine if these programmes were in line with the most recent (inter)national guidelines, such as those of the European College of Gerodontology and the recently introduced Dutch framework Oral Health Care (2020). Therefore, the competences regarding the domain of gerodontology were analysed to assess if students were prepared adequately to meet the oral health care needs of the ageing population. In the consensus meeting a new set of competences was formulated together with a new outline for the gerodontology-programme applicable for the Dutch and Flemish dental schools.
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Educación Continua en Odontología , Facultades de Odontología , Curriculum , Educación en Odontología , Humanos , EstudiantesRESUMEN
BACKGROUND: It is unclear how many community-dwelling elderly (≥75 years) experience oral health problems (e.g. pain, dry mouth, chewing problems) and how they manage their dental care needs. This study aimed to assess self-reported oral health problems in elderly who are frail or have complex care needs, and their ability to organize dental care when reporting oral pain. METHODS: Three thousand five hundred thirty-three community-dwelling elderly participating in the "Embrace" project were asked to complete questionnaires regarding oral status and oral health problems. Frailty was assessed with the Groningen Frailty Indicator (GFI). Intermed for Elderly Self-Assessment (IM-E-SA) was used to determine complexity of care needs. Next, elderly who reported oral pain were interviewed about their oral pain complaints, their need for dental care, and their ability to organize and receive dental care. For statistical analyses Chi2-tests and the one-way ANOVA were used. RESULTS: One thousand six hundred twenty-two elderly (45.9%) completed the questionnaires. Dry mouth (11.7%) and oral pain (6.2%) were most frequently reported. Among the elderly reporting oral pain, most were registered at a local dentist and could go there when needed (84.3%). Robust elderly visited the dentist independently (87%), frail (55.6%) and complex (26.9%) elderly more often required assistance from caregivers. CONCLUSIONS: Dry mouth and oral pain are most reported oral health problems among community-dwelling elderly. Elderly with complex care needs report most oral health problems. In case an elderly seeks dental treatment to alleviate an oral pain complaint, most elderly in this study were able to organize dental care and transport to the dentist. Frail and complex elderly often need assistance from caregivers to visit the dentist. Therefore caretakers should keep in mind that when frailty progresses, visiting a dentist may become more and more difficult and the risk for poor oral health increases.
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Cuidado Dental para Ancianos/estadística & datos numéricos , Atención Odontológica/estadística & datos numéricos , Salud Bucal , Anciano , Anciano de 80 o más Años , Estudios Transversales , Encuestas de Salud Bucal , Femenino , Anciano Frágil , Evaluación Geriátrica , Servicios de Salud para Ancianos , Humanos , Vida Independiente , AutoinformeRESUMEN
OBJECTIVES: To investigate associations of leptin and adiponectin levels with knee and hand osteoarthritis, and explore whether these mediate the association between adiposity and osteoarthritis. METHODS: This is a cross-sectional analysis of baseline data from the population-based Netherlands Epidemiology of Obesity study. Adiposity was assessed with body mass index (BMI) and percentage total body fat (%TBF). Osteoarthritis, defined as hand or knee osteoarthritis, was determined using American College of Rheumatology criteria. Fasting serum adipokine levels were measured using immunoassays. Associations between adiposity and osteoarthritis were examined with logistic regression, adjusted for age, sex, ethnicity and education, and additionally for leptin and adiponectin as potential mediators. RESULTS: In 6408 participants (56% women, median age 56 years), prevalence of osteoarthritis was 22% (10% isolated knee and 8% isolated hand osteoarthritis). Leptin levels were positively associated with osteoarthritis, while adiponectin levels were not. Leptin partially mediated the association of adiposity with osteoarthritis (OR 1.40 (95%CI 1.30; 1.52) attenuated to 1.38 (1.24; 1.54) per 5 units BMI and OR 1.25 (1.17; 1.35) to 1.20 (1.10; 1.32) per 5 units %TBF, representing 4% and 17% mediation, respectively). Larger proportion mediation by leptin was found in knee (13%/27%) than in hand osteoarthritis (9%/18%). Sex-stratified analyses generally showed stronger associations between adiposity, leptin and osteoarthritis in women than in men. CONCLUSIONS: Serum leptin levels were associated with osteoarthritis, and partially mediated the association between adiposity and osteoarthritis, while adiponectin levels were not associated with osteoarthritis. These findings provide evidence for systemic effects of adipose tissue in osteoarthritis.
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Adiponectina/metabolismo , Articulaciones de la Mano , Leptina/metabolismo , Obesidad/metabolismo , Osteoartritis de la Rodilla/metabolismo , Adiposidad , Anciano , Femenino , Humanos , Modelos Logísticos , Masculino , Persona de Mediana Edad , Países Bajos/epidemiología , Obesidad/epidemiología , Osteoartritis/epidemiología , Osteoartritis/metabolismo , Osteoartritis de la Rodilla/epidemiologíaRESUMEN
Current data show many older adults to have poor oral health, deteriorating even more when they become frail or care dependent. In order to achieve a structural and sustained improvement of this situation, it is necessary to have a clear view of the factors determining oral health in older adults, such as (endogenous (biological, lifestyle), environmental determinants and determinants associated with the organisation of healthcare. The various determinants show oral health in older adults is the result of thecombined effects of very diverse factors and for that reason, a solution will have to be based on a multidisciplinary approach, also involving people outside of clinical care. To promote good oral health over the full course of life, it is important to invest in a good start in life, that helps accumulate oral health gains, and at the same time it is essential to adapt the healthcare system and prevention strategies to the individual's needs in order to make oral care effective for the full course of life.
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Atención a la Salud , Salud Bucal , Anciano , HumanosRESUMEN
Oral health in frail older people is often poor. There are a number of reasons for this, such as increased morbity and decreased motivation for (self) care. Good oral health is, however, very important. Studies have revealed poor oral health to cause or aggravate several medical and psychological problems. Illness and medication can, in turn, damage oral health. Oral health among the elderly should therefore be carefully monitored and maintained. This requires multidisciplinary and interprofessional collaboration on the part of healthcare professionals and others involved. Such collaboration is now still very limited; hardly anything has been written about how such collaboration in the area of oral care for frail older people should or could be organised. This article provides an overview of the possibilities and the relevant factors in the area of oral care for the elderly in promoting collaboration among healthcare professionals and others involved. All of this is under the banner of 'united we stand'.
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Anciano Frágil , Salud Bucal , Anciano , Anciano de 80 o más Años , Personal de Salud , Humanos , AutocuidadoRESUMEN
Oral care for older people is an underexposed topic in dentistry as well as in general healthcare, while oral care professionals are increasingly confronted with frail and multimorbid older people with complex care needs. The research agenda 'Oral care for the elderly' was developed to encourage the collaboration of researchers in the Netherlands and Flanders (Belgium) to do more research in this area and in this way, to achieve an expansion and implementation of knowledge. This will make possible the provision of a socially responsible and robust basis for sustainable oral care for frail older people. The focus of the agenda is on 3 themes, namely oral health and oral function for older people; multi/interdisciplinary collaboration within primary care and the costs, benefits and long-term effect(s) of oral care throughout the entire course of life. This article provides an overview of this research agenda and the way in which it has been established.
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Atención a la Salud , Atención Primaria de Salud , Anciano , Anciano de 80 o más Años , Bélgica , Anciano Frágil , Humanos , Países Bajos , Salud BucalRESUMEN
Lynch syndrome (LS) mutation carriers may reduce their cancer risk by adhering to lifestyle recommendations for cancer prevention. This study tested the effect of providing LS mutation carriers with World Cancer Research Fund-the Netherlands (WCRF-NL) health promotion materials on awareness and knowledge of and adherence to these recommendations. In this randomized controlled trial (n = 226), the intervention group (n = 114) received WCRF-NL health promotion materials. All LS mutation carriers were asked to fill out questionnaires at 2 weeks before (baseline, T0) and at 2 weeks (T1) and 6 months (T2) after the intervention. Linear mixed models were performed on awareness (0-7) and knowledge (0-7) of the recommendations, and on the secondary outcomes, that is adherence, distress, cancer worry, and risk perception. Compared with the control group, the intervention group became significantly more aware (overall mean difference = 1.24; 95%CI = 0.82-1.67) and obtained significantly improved knowledge of the recommendations (overall mean difference = 1.65; 95%CI = 1.27-2.03). Differences were significantly larger for T1 (Pinteraction = .003 and ≤.001, respectively) but remained significant for T2. No effect on secondary outcomes was found. In conclusion, provision of WCRF-NL health promotion materials increases awareness and knowledge of lifestyle recommendations for cancer prevention among LS mutation carriers without causing additional distress, but does not affect adherence.
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Neoplasias Colorrectales Hereditarias sin Poliposis/genética , Guías como Asunto , Promoción de la Salud/métodos , Estilo de Vida , Mutación , Neoplasias/prevención & control , Adulto , Neoplasias Colorrectales Hereditarias sin Poliposis/complicaciones , Femenino , Conocimientos, Actitudes y Práctica en Salud , Heterocigoto , Humanos , Masculino , Persona de Mediana Edad , Neoplasias/complicaciones , Neoplasias/genética , Evaluación de Resultado en la Atención de Salud/métodos , Evaluación de Resultado en la Atención de Salud/estadística & datos numéricos , Factores de TiempoRESUMEN
AIM: Most people who are at increased familial colorectal cancer (FCRC) risk are not identified, despite the need for enhanced surveillance colonoscopy for effective CRC prevention. An online self-test may enhance this identification. We assessed whether taking an online self-test to identify increased FCRC risk increases anxiety, distress or CRC risk perception in population-based CRC screening. METHOD: After the precolonoscopy consultation, patients who had a positive immunohistochemical occult faecal blood test (iFOBT+) in population-based CRC screening were invited by email to take an online self-test at home which returned details of family history. Anxiety (STAI-DY), distress (HADS) and CRC risk perception were assessed immediately before and after taking the online self-test and 2 weeks later. RESULTS: Of 250 participants invited, 177 (71%) completed the online self-test and psychological questionnaires and 153 (61%) completed questionnaires 2 weeks later. The median age was 65 years (range 61-75). The FCRC risk was increased in 17 participants (9.6%). Of these, 12 (6.8%) had a highly increased FCRC risk and may benefit from germline genetic testing for Lynch syndrome. In 7 of 17 participants (40%) the self-test obtained novel information on family history. Anxiety and distress levels were, and remained, below a clinically relevant level. Perception of CRC risk remained unchanged. Most participants (83%) would recommend the online self-test to others. CONCLUSION: Of those with a iFOBT+, 9.6% had a previously unidentified increasedFCRC risk and require an enhanced surveillance colonoscopy instead of iFOBT. As screening for this risk did not increase anxiety or distress, and was highly acceptable, we recommend adding the online self-test to population-based CRC screening.
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Neoplasias Colorrectales/diagnóstico , Detección Precoz del Cáncer/psicología , Predisposición Genética a la Enfermedad/psicología , Vigilancia de la Población/métodos , Medición de Riesgo/métodos , Adulto , Neoplasias Colorrectales/psicología , Autoevaluación Diagnóstica , Detección Precoz del Cáncer/métodos , Femenino , Humanos , Internet , Masculino , Anamnesis , Persona de Mediana Edad , Encuestas y Cuestionarios , Escala de Ansiedad ante PruebasRESUMEN
OBJECTIVE: To assess oral health, health, and quality of life (QoL) of care-dependent community-living older people with and without remaining teeth who recently received formal home care. MATERIALS AND METHODS: For this cross-sectional observational study, community-living older people (≥ 65 years), who recently (< 6 months) received formal home care, were interviewed with validated questionnaires and underwent an oral examination. Oral health, general health, medicines usage, frailty (Groningen Frailty Indicator), cognition (Minimal Mental State Examination), QoL (RAND 36), and oral health-related QoL (Oral Health Impact Profile-14) were assessed. RESULTS: One hundred three out of 275 consecutive eligible older people (median age 79 [IQR (Inter Quartile Range) 72-85 years] participated in the study. Thirty-nine patients had remaining teeth and 64 were edentulous. Compared with edentulous older people, older people with remaining teeth scored significantly better on frailty, QoL, physical functioning, and general health. No significant differences were seen in cognition. Dental and periodontal problems were seen in more than half of the patients with remaining teeth. Two third of the edentulous patients did not visit their dentist regularly or at all. CONCLUSIONS: Care-dependent home-dwelling older people with remaining teeth generally were less frail, scored better on physical functioning and general health and had better QoL than edentulous older people. Dental and periodontal problems were seen in approximately 50% of the elderly. CLINICAL RELEVANCE: Notwithstanding their common dental problems, frailty, health, and QoL are better in home-dwelling older people with remaining teeth. To maintain this status, we advise not only dentists, but also health care workers and governments, to encourage people to maintain good oral health.
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Evaluación Geriátrica , Servicios de Atención de Salud a Domicilio , Vida Independiente , Salud Bucal , Calidad de Vida , Anciano , Anciano de 80 o más Años , Estudios Transversales , Femenino , Anciano Frágil , Humanos , Masculino , Boca Edéntula , Encuestas y CuestionariosRESUMEN
BACKGROUND AND PURPOSE: Previous studies, mostly case reports and uncontrolled studies, provide a low level of evidence for the hypothesized link between Lyme disease and amyotrophic lateral sclerosis (ALS). In order to make evidence-based recommendations regarding testing for Borrelia burgdorferi antibodies in the diagnostic work-up for ALS, the objective of this study was to explore the evidence for an association between these antibodies and ALS in a case-control design including age-, gender- and residency-matched controls. METHODS: A total of 491 patients with ALS were matched to 982 controls. IgG titers against B. burgdorferi were determined by an enzyme-linked immunosorbent assay and, in the case of positivity or borderline results, a western blot was performed. Conditional logistic regression and Fisher's exact tests were used to compare the antibody titers or positivity between patients and controls. RESULTS: No difference in seroprevalence of Borrelia was found between patients (4.1%) and controls (5.9%). Clinical characteristics and survival were similar between seropositive and seronegative patients. Moreover, patients with a spinal onset were not more frequently seropositive compared with patients with a bulbar onset (P = 0.47), and neither were patients with a short diagnostic delay of <6 months compared with controls (P = 0.69). None of the 20 patients with a diagnostic delay of <3 months tested positive for IgM antibodies, suggestive of a recent infection. CONCLUSION: This large case-control study provides evidence for a lack of association between B. burgdorferi antibodies and ALS, and therefore does not support the inclusion of routine testing for these antibodies in the diagnostic work-up in patients with classical ALS.
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Esclerosis Amiotrófica Lateral/inmunología , Anticuerpos Antibacterianos/sangre , Borrelia burgdorferi/inmunología , Adulto , Anciano , Anciano de 80 o más Años , Esclerosis Amiotrófica Lateral/sangre , Esclerosis Amiotrófica Lateral/microbiología , Estudios de Casos y Controles , Diagnóstico Tardío , Femenino , Humanos , Masculino , Persona de Mediana Edad , Estudios Seroepidemiológicos , Adulto JovenRESUMEN
Complex coacervate core micelles (C3Ms) are colloidal structures useful for encapsulation of biomacromolecules. We previously demonstrated that enhanced green fluorescent protein (EGFP) can be encapsulated into C3Ms using the diblock copolymer poly(2-methyl-vinyl-pyridinium)41-b-poly(ethylene-oxide)205. This packaging resulted in deviating spectroscopic features of the encapsulated EGFP molecules. Here we show that for monomeric EGFP variant (mEGFP) micellar encapsulation affects the absorption and fluorescence properties to a much lesser extent, and that changes in circular dichroism characteristics are specific for encapsulated EGFP. Time-resolved fluorescence anisotropy of encapsulated (m)EGFP established the occurrence of homo-FRET (Förster resonance energy transfer) with larger transfer correlation times in the case of EGFP. Together, these findings support that EGFP dimerizes whereas the mEGFP mainly remains as a monomer in the densely packed C3Ms. We propose that dimerization of encapsulated EGFP causes a reorientation of Glu222, resulting in a pKa shift of the chromophore, which is fully reversible after release of EGFP from the C3Ms at a high ionic strength.
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Proteínas Fluorescentes Verdes/química , Micelas , Polietilenglicoles/química , Polivinilos/química , Dicroismo Circular , Fluorescencia , Polarización de Fluorescencia , Conformación Proteica , Multimerización de Proteína , Espectrometría de FluorescenciaRESUMEN
OBJECTIVE: To assess oral status and self-reported oral health in community-living elderly and to determine differences between relevant subgroups of oral status (remaining teeth, edentulous, implant-retained overdentures) and case complexity (robust, frail, complex care needs). SUBJECTS AND METHODS: In this cross-sectional descriptive study, 1325 Dutch community-living elderly (≥75 years of age) were asked to complete validated questionnaires on frailty, activities of daily living (ADL), complexity of care needs, and QoL. Data on oral status, self-reported oral health, dental care, general health, and medication use were assessed. Differences between relevant subgroups were determined. RESULTS: Data of 1026 (77%) elderly (median 80 years, IQR 77-84) were analyzed: 39% had remaining teeth, 51% were edentulous, and 10% had implant-supported overdentures. Elderly with complex care needs (n = 225, 22%) and frail elderly (n = 217, 21%) were more often edentulous and reported more oral problems than robust elderly (n = 584, 57%). Elderly persons with remaining teeth were less frail, had better QoL and ADL, and used fewer medicines than edentulous elderly. Elderly with implant-supported overdentures performed better on frailty and QoL than edentulous elderly with conventional dentures. CONCLUSION: Community-living elderly commonly suffer from oral health problems, in particular elderly with complex care needs. QoL, ADL, and general health are higher among community-living elderly with remaining teeth and implant-supported overdentures than in edentulous elderly.