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OBJECTIVE: Orthorexia Nervosa (ON) is an eating disorder of growing interest that is characterized by an obsession with healthy eating. Nowadays, people spend an increasing amount of time on social media, which may negatively impact eating behaviors. The aim of this study was to investigate the relationship between social media usage and risk of ON. SUBJECTS AND METHODS: We conducted an online survey using the 10-item Italian-Düsseldorf Orthorexia Scale questionnaire (I-DOS). A total of 4,107 individuals participated and were classified according to sex, age, education level, marital status, BMI, main occupation, and diet. RESULTS: The prevalence of ON was 28.5%. Participants who reported using social media for over 60 minutes per day had a higher prevalence of ON than those using social media for less than 15 minutes per day. CONCLUSIONS: The results of this study suggest that longer time spent on social media is associated with ON.
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Ortorexia Nervosa , Mídias Sociais , Humanos , Comportamentos Relacionados com a Saúde , Dieta , Inquéritos e Questionários , Comportamento AlimentarRESUMO
The World elderly population is expected to double before 2050. Unhealthy habits and unhealthy lifestyles are commonly associated with age-related diseases or their worsening. Modification in daily lifestyle and diet may help preventing age-related diseases onset and efficiently affecting their evolution, thus promoting the Healthy Aging process, concept recently coined to describe the disease-free aging process. This review highlights the role of nutrition science in promoting healthy aging. Since the Mediterranean Model demonstrated to be a useful style in supporting healthy aging, promotion of this correct lifestyle by health policies seems to be the best approach to achieve this target.
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Dieta Mediterrânea , Envelhecimento Saudável , Idoso , Dieta , Nível de Saúde , Humanos , Estilo de VidaRESUMO
AIM: The aim of the present study was to evaluate the anthropometric parameters and the body composition through bioelectrical impedance analysis on paediatric subjects with dental agenesis. MATERIALS AND METHODS: The study was conducted on 144 subjects (58.3% females and 41.7% males), aged 7-14 years (average age 10.22±2.53 years). Each patient underwent a dental check-up at the Paediatric Dentistry Unit, University of Rome Tor Vergata (Italy) and a nutritional evaluation, aimed at analysing the anthropometric characteristics and evaluating the indices of body composition through bioelectrical impedance analysis (BIA) at the Human Nutrition Unit, University of Rome Tor Vergata. The sample was divided into three groups: a group with single agenesis (Group 1), a group with multiple agenesis (Group 2) and a control group (Group A). Using the predictive equations, the following values were evaluated: resistance (R), reactance (Xc), phase angle (PHA), body cell mass index (BCMI), body cell mass (BCM), total body water (TBW), intracellular water (ICW), extracellular water (ECW), fat mass (FM), fat free mass (FFM). STATISTICS: The Excel environment and the SAS System, version 9.3, were used for statistical analysis, providing a descriptive and parametric analysis of the sample. The values of the anthropometric parameters were expressed as mean ± standard deviation. For the statistical analysis of anthropometric parameters and body composition, analysis of variance (1-way ANOVA) was used, which allowed us to find differences and the Student's t-test to compare Groups 1, 2, and A. RESULTS: There is a significant difference in the resistance R value between the case group with single agenesis (Group 1) and the control group (Group A) (R, 710.28±72.46 vs 667.4±104.16, p=0.028), and the phase angle PHA between the case group with multiple agenesis (Group 2) and the control group (Group A) (PHA, 5.18±0.48 vs 5.85±1.05, p=0.028). The BCM% value shows a significant difference between both Group 1 and Group A (BCM%, 50.53 ± 3.29 vs 52.68 ± 4.74, p=0.016) and between Group 2 and Group A (BCM%, 49.25± 2.86 vs 52.68 ± 4.74, p=0.035). The TBW, ICW, ECW, FM, FFM values showed no significant differences between the various groups analysed. CONCLUSION: Body composition in subjects with dental agenesis presents a higher R, a consequently lower PHA and a lower BCM% compared to the control group. For the first time, the results highlighted the possible relationship between dental agenesis and body composition, measured through BIA.
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Composição Corporal , Estado Nutricional , Adolescente , Índice de Massa Corporal , Criança , Impedância Elétrica , Feminino , Humanos , Itália , MasculinoRESUMO
Obesity is linked to other systemic diseases, such as diabetes mellitus, dyslipidemia, and arterial hypertension. These comorbidities increase the risk of developing cardiovascular disease risk. Adipose tissue is a true endocrine organ and releases various pro-inflammatory cytokines. Periodontal disease (PD) is a chronic inflammatory disorder of the gingiva and bone support (periodontal tissues) that surrounds the teeth. The relationship between obesity and an increased risk of developing PD is already known in the literature. Many studies correlated the cardiometabolic risk with periodontal disease. Bariatric surgery is a way to reduce the adipose tissue in obese patients, that meet specific criteria. It has been observed that this type of surgery usually reduces both the systemic inflammation and the cardiometabolic risk. Some authors have hypothesized that, as a result, the progression of periodontal disease is also reduced. Five articles are analyzed in this systematic review. In these papers, the periodontal health before and after the bariatric surgery was compared. However, the conclusion of the previous studies demonstrated a scarce literature and did not confirm the reduction of periodontal disease after bariatric surgery, but a reduction of cardiometabolic risk. Therefore, periodontal disease in no way influences the reduction of cardiovascular risk after bariatric surgery.
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Cirurgia Bariátrica , Obesidade/cirurgia , Doenças Periodontais/cirurgia , Tecido Adiposo/patologia , Humanos , Obesidade/patologia , Doenças Periodontais/patologia , Fatores de RiscoRESUMO
No Abstract Available.
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Infecções por Coronavirus/terapia , Apoio Nutricional , Pneumonia Viral/terapia , Betacoronavirus , COVID-19 , Estado Terminal/terapia , Carboidratos da Dieta/administração & dosagem , Gorduras na Dieta/administração & dosagem , Proteínas Alimentares/administração & dosagem , Ingestão de Energia , Humanos , Micronutrientes/administração & dosagem , Estado Nutricional , Pandemias , Probióticos/administração & dosagem , SARS-CoV-2 , Equilíbrio HidroeletrolíticoRESUMO
OBJECTIVE: ANGPTL4 inhibits lipoprotein lipase in adipose tissue, regulating plasma triglycerides levels. In persons with obesity plasma ANGPTL4 levels have been positively correlated with body fat mass, TG levels and low HDL. A loss-of-function E40K mutation in ANGPTL4 prevents LPL inhibition, resulting in lower TGs and higher HDLc in the general population. Since obesity determines metabolic alterations and consequently is a major risk factor for cardiovascular disease, the aim was to explore if obesity-related metabolic abnormalities are modified by the ANGPTL4-E40K mutation. METHODS: ANGPTL4-E40K was screened in 1206 Italian participants, of which 863 (71.5%) with obesity. All subjects without diabetes underwent OGTT with calculation of indices of insulin-sensitivity. RESULTS: Participants with obesity carrying the E40K variant had significantly lower TG (p = 0.001) and higher HDLc levels (p = 0.024). Also in the whole population low TGs and high HDLc were confirmed in E40K carriers. In the obese subpopulation it was observed that almost all E40K carriers were within the lowest quartile of TGs (p = 1.1 × 10-9). E40K had no substantial effect of on glucose metabolism. Finally, none of the obese E40K carriers had T2D, and together with the favourable lipid profile, they resemble a metabolically healthy obese (MHO) phenotype, compared to 38% of E40E wild-type obese that had diabetes and/or dyslipidaemia (p = 0.0106). CONCLUSIONS: In participants with obesity the ANGPTL4-E40K variant protects against dyslipidemia. The phenotype of obese E40K carriers is that of a patient with obesity without metabolic alterations, similar to the phenotype described as metabolic healthy obesity.
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BACKGROUND: Several studies suggested that abnormalities in tissue perfusion of external genitalia and vagina can lead to female sexual dysfunctions (FSDs) and can be associated to metabolic and cardiovascular risk factors. However, there are some technical difficulties in assessing these abnormalities. The measurement of oxygen partial pressure is a noninvasive method to measure oxygen partial pressure (pO2) at the skin surface to assess tissue perfusion. The aim of this study was to evaluate whether transmucosal oxygen tension (TmPO2) can be measured at the mucosal surface of clitoris and whether the measurements are reliable. METHODS: TmPO2 was measured in six young healthy women by using a device to measure transcutaneous pO2 on the skin and by choosing a small sensor, usually used for newborns. The identical procedure for the detection of pO2 at the skin surface was used. RESULTS: The mean value of TmPO2 was 42.3 mmHg (range: 24.1-53.4 mmHg). All the trend curves of the TmPO2 showed the same behavior: after a stabilization time, there was a stable pO2 (plateau phase) that corresponds to the TmPO2 of the clitoris. These curves had a similar trend to those recorded at the skin surface. CONCLUSIONS: TmPO2 can be easily measured at the mucosal surface of clitoris. Large epidemiological studies in healthy and unhealthy women and in women with FSD are needed to establish both the normal range of TmPO2 and the meaning that different values of TmPO2 can have on sexual and general health of the women.
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Fenômenos Fisiológicos Cardiovasculares , Clitóris/química , Nível de Saúde , Metabolismo/fisiologia , Oximetria/métodos , Comportamento Sexual , Adulto , Monitorização Transcutânea dos Gases Sanguíneos , Feminino , Humanos , Mucosa/química , Valores de Referência , Reprodutibilidade dos Testes , Saúde da MulherRESUMO
BACKGROUND AND AIMS: Type I hyperlipoproteinemia, also known as familial chylomicronemia syndrome (FCS), is a rare autosomal recessive disorder caused by variants in LPL, APOC2, APOA5, LMF1 or GPIHBP1 genes. The aim of this study was to identify novel variants in the LPL gene causing lipoprotein lipase deficiency and to understand the molecular mechanisms. METHODS AND RESULTS: A total of 3 individuals with severe hypertriglyceridemia and recurrent pancreatitis were selected from the Lipid Clinic at Sahlgrenska University Hospital and LPL was sequenced. In vitro experiments were performed in human embryonic kidney 293T/17 (HEK293T/17) cells transiently transfected with wild type or mutant LPL plasmids. Cell lysates and media were used to analyze LPL synthesis and secretion. Media were used to measure LPL activity. Patient 1 was compound heterozygous for three known variants: c.337T > C (W113R), c.644G > A (G215E) and c.1211T > G (M404R); patient 2 was heterozygous for the known variant c.658A > C (S220R) while patient 3 was homozygous for a novel variant in the exon 5 c.679G > T (V227F). All the LPL variants identified were loss-of-function variants and resulted in a substantial reduction in the secretion of LPL protein. CONCLUSION: We characterized at the molecular level three known and one novel LPL variants causing type I hyperlipoproteinemia showing that all these variants are pathogenic.
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Hiperlipoproteinemia Tipo I/genética , Lipase Lipoproteica/genética , Mutação , Adulto , Idoso , Feminino , Predisposição Genética para Doença , Células HEK293 , Heterozigoto , Homozigoto , Humanos , Hiperlipoproteinemia Tipo I/sangue , Hiperlipoproteinemia Tipo I/diagnóstico , Hiperlipoproteinemia Tipo I/enzimologia , Hipertrigliceridemia/sangue , Hipertrigliceridemia/enzimologia , Hipertrigliceridemia/genética , Lipídeos/sangue , Lipase Lipoproteica/metabolismo , Masculino , Pessoa de Meia-Idade , Pancreatite/sangue , Pancreatite/enzimologia , Pancreatite/genética , Fenótipo , Recidiva , TransfecçãoRESUMO
OBJECTIVE: To evaluate the impact of a new formulation of probiotic mouthwash (PM), using Biocult strong® dissolved in neutral mouthwash. PATIENTS AND METHODS: Forty-two patients with cardiovascular disease (CVD) or type 1 and type 2 diabetes were enrolled. Plaque Control Record (PCR) and Bleeding on Probing (BOP) were assessed at baseline and after two weeks of PM or positive control treatment in intervention group (IG) and control group (CG). Food intake was estimated by 3-day diet record. RESULTS: BOP was significantly reduced in all treatments and samples, except for IG in CVD sample (p=0.15). PCR decreased significantly in all treatments and samples (p<0.01). No significance was obtained for BOP and IP in the time x group interaction. Food intake was not significantly different between IG and CG in all samples. Nutrients such as fats and simple carbohydrates were correlated with BOP in patients who received positive control, rather than PM, indicating a lack of food influence on BOP and PCR in IG. CONCLUSIONS: PM treatment was effective in relation to the reduction of PCR and BOP. Probiotics represent a good, but additional, tool for prophylaxis, because they cannot completely substitute the classic oral hygiene methods. Moreover, one week of treatment was not sufficient to draw firm conclusions about the efficacy of the treatment itself.
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Doenças Cardiovasculares/complicações , Diabetes Mellitus Tipo 2/complicações , Antissépticos Bucais/uso terapêutico , Higiene Bucal , Probióticos/uso terapêutico , Idoso , Feminino , Humanos , Masculino , Pessoa de Meia-IdadeRESUMO
PURPOSE: C-peptide has been shown to exert several, previously unknown, biological effects. A recent cross-sectional study demonstrated an association between low C-peptide serum levels and low lumbar bone density of postmenopausal women not affected by diabetes. To date, very little research attention has been directed toward the association between C-peptide and osteoporotic fractures. To contribute toward filling this gap, we investigated the association between C-peptide and fractures in postmenopausal women. METHODS: A cohort of 133 non-diabetic postmenopausal women with and without a history of fractures was evaluated in this cross-sectional investigation. Standardized interviews were performed to gather information on the patients' fracture history. All of the participants underwent a bone mineral density assessment by DXA, radiographs, and a serum C-peptide measurement. RESULTS: Thirty-four women presented fractures. Bivariate analysis revealed an inverse correlation between C-peptide and fractures (r = -0.27, p = 0.002). A significant difference in mean C-peptide levels was also found between women with vs. without fractures (p = 0.01, adjusted for age, BMI and glucose). Logistic regression analysis showed that C-peptide levels, femoral and vertebral BMD were all negatively associated with fracture status (B = -1.097, ES = 0.401, p = 0.006, 95% CI 0.15-0.73; B = -15.6, SE = 4.17, p < 0.001, CI 0.001-0.002; B = -24.8, SE = 5.23, p < 0.001, CI 0001-0.002; respectively). CONCLUSIONS: This study confirms an inverse association between serum C-peptide levels and a history of fractures in postmenopausal women without diabetes. These results suggest that C-peptidemay exert an effect on bone mineral density. However, further large-scale studies are needed to corroborate this finding and investigate the potential underlying mechanisms involved.
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Biomarcadores/sangue , Densidade Óssea , Peptídeo C/deficiência , Diabetes Mellitus , Osteoporose Pós-Menopausa/diagnóstico , Fraturas por Osteoporose/diagnóstico , Idoso , Peptídeo C/sangue , Estudos Transversais , Feminino , Seguimentos , Humanos , Itália/epidemiologia , Pessoa de Meia-Idade , Osteoporose Pós-Menopausa/sangue , Osteoporose Pós-Menopausa/epidemiologia , Fraturas por Osteoporose/sangue , Fraturas por Osteoporose/epidemiologia , Pós-Menopausa , Prevalência , Prognóstico , Fatores de RiscoRESUMO
The total number of microbes that colonize the human body is far greater than the number of cells that make it up. In recent years, it has been shown that bacteria play an essential role in the body; in fact, they are essential for the maturation of the intestine, the development and control of the immune system, the development of the brain, the metabolism of macronutrients, the synthesis of vitamins, and the energy balance. Bacteria play an essential role in defense of their territory against the entry of other bacteria that may be pathogenic to health. Metchnikoff, about a century ago, invented probiotics, assuming that the use of certain bacteria could be beneficial to maintaining health. Bacteria colonize our body from birth and breastfeeding, using the bacterial flora of the mother by accessing newborns through the mouth. Antibiotic therapies in pregnancy or cesarean section prevent this flow of probiotics to infants and open the way for very important diseases, such as diabetes and obesity. The alterations of oral bacterial flora are responsible for numerous diseases of the oral cavity and the idea of the use of probiotics is leading the way to new therapeutic perspectives.
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Odontologia , Boca/microbiologia , Probióticos/uso terapêutico , Feminino , Humanos , Recém-Nascido , Intestinos/microbiologia , GravidezRESUMO
UNLABELLED: In this population-based, cross-sectional study in Italian postmenopausal females not affected by diabetes, we showed a link between serum C-peptide and lumbar bone mineral density, suggesting that C-peptide exerts an insulin-independent effect on bone mass. INTRODUCTION: It is well known that type 1 (T1) diabetes, characterized by insulin and C-peptide deficiency, is associated with a low lumbar bone mineral density and an increased risk for fracture. While a role for insulin in the pathogenesis of osteoporosis has been demonstrated, the association between C-peptide and the bone mineral density has not been investigated. We conducted a study in a cohort of 84 postmenopausal women without diabetes to clarify the association between serum C-peptide and the lumbar bone mineral density. METHODS: Participants underwent a bone mineral density evaluation by DXA and biochemical analysis including the C-peptide assay. RESULTS: rteen percent of the population had osteoporosis and 38% had osteopenia. With ANOVA test, we showed that women with the lowest C-peptide concentration had lower lumbar mineral density in comparison to those in all other C-peptide concentration group (p = 0.02 among groups after adjustment). The univariate and multivariate analysis showed that C-peptide was positively associated with both lumbar T-score and Z-score besides other well-known factors like age (with T-score p < 0.001; beta = -0.38) and BMI (with T-score p = 0.009; beta = 0.34), while insulin was not correlated with the lumbar bone mineral density. The area under the receiver operating characteristic (ROC) curve for C-peptide to predict the absence of lumbar osteoporosis was 0.74 (SE = 0.073; p = 0.013). CONCLUSIONS: These results suggest that C-peptide may exert an insulin- and BMI-independent effect on lumbar bone mineral density and that further large-scale studies are needed in order to clarify its role in bone mineralization especially in subjects without diabetes.
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Doenças Ósseas Metabólicas/sangue , Peptídeo C/deficiência , Vértebras Lombares/fisiopatologia , Absorciometria de Fóton/métodos , Idoso , Biomarcadores/sangue , Índice de Massa Corporal , Densidade Óssea/fisiologia , Doenças Ósseas Metabólicas/fisiopatologia , Peptídeo C/sangue , Estudos Transversais , Diabetes Mellitus/sangue , Feminino , Humanos , Pessoa de Meia-Idade , Osteoporose Pós-Menopausa/sangue , Osteoporose Pós-Menopausa/fisiopatologia , Sensibilidade e EspecificidadeRESUMO
OBJECTIVE: The purpose of this study is to report a case of full-arch rehabilitation on six endosseous implants loaded following the standard procedure. METHODS: An implant-prosthetic treatment was proposed to a 53-year-old woman with a total prosthesis in the upper jaw. Six implants on upper maxillary were placed keeping the upper complete denture during the osseointegration period. The implants were left submerged to allow the patient to wear removable prostheses and the prosthesis was rebase with Hydrocast to not compress the sites of healing during the osseointegration period. The impression of implants was made with silicones for addition (VPS) with different viscosities after 8 weeks. The final restoration was carried out taking into account the aesthetic and functional canons. CONCLUSIONS: Correct diagnosis and accurate implant planning are key for success in implant rehabilitation.
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BACKGROUND AND AIM: Studies on the association between serum calcium levels and cardiovascular diseases suggested a causative role for hypercalcemia but other studies showed that even serum calcium levels within normal range could be involved in atherosclerosis. However, while dietary calcium intake does not seem to be related to adverse cardiovascular effects, the association between calcium supplementation and the cardiovascular events has not been fully proven. Our aim was to determine the relation between serum calcium levels, within normal range, and the presence of carotid atherosclerosis in a population in whom investigations on this topic are lacking, the postmenopausal women. METHODS AND RESULTS: In this retrospective study, participants were recruited from women aged 49-65 years who underwent an ultrasonography evaluation of the carotid arteries between years 2008-2012. The study included 413 subjects with serum calcium level available, without symptomatic cardiovascular disease. A physical examination, including the evaluation of body mass index, waist and hip circumferences and the blood pressure, as well as, a collection of a venous blood sample was performed. The mean age was 56 ± 7 years. The prevalence of the carotid atherosclerosis was 50.8%. The comparison between women with and without carotid atherosclerosis showed differences for the classical risk factors and for serum calcium levels (p = 0.001). The logistic regression analysis, adjusting for these risk factors, confirmed the association between serum calcium levels and carotid atherosclerosis (p = 0.011). Furthermore, we showed an increasing prevalence of carotid atherosclerosis from lower to higher calcium quartiles (p = 0.016). CONCLUSION: We found a positive relation between serum calcium levels and the carotid atherosclerosis in postmenopausal women. This study may suggest a redetermination of the reference range of calcemia, at least in menopause.
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Envelhecimento , Cálcio/sangue , Doenças das Artérias Carótidas/epidemiologia , Idoso , Artérias Carótidas/diagnóstico por imagem , Doenças das Artérias Carótidas/sangue , Doenças das Artérias Carótidas/diagnóstico por imagem , Estudos de Coortes , Feminino , Humanos , Itália/epidemiologia , Modelos Logísticos , Pessoa de Meia-Idade , Pós-Menopausa , Prevalência , Estudos Retrospectivos , Fatores de Risco , UltrassonografiaRESUMO
BACKGROUND AND AIM: To verify if the carotid plaque development is concomitant to brachial artery diameter enlargement, in healthy postmenopausal women. METHODS AND RESULTS: This is a retrospective, recall study. We enrolled 40 postmenopausal women, selected from a database for the period 2000-2008, not affected by subclinical carotid atherosclerosis and without risk factors for cardiovascular disease. At the recall visit, carotid and brachial duplex scan was again obtained. The incidence of plaque was 30% after a mean follow-up period of 60 months. There were no differences in baseline characteristics between subjects developing carotid atherosclerosis and subjects who did not, except for the brachial diameter change, follow-up and heart rate. The logistic-regression analysis confirmed that only brachial diameter change resulted to be correlated with the development of carotid atherosclerosis. CONCLUSION: Brachial artery diameter increase is concomitant to carotid plaque development. Vascular enlargement could not be a focal change but a systemic process associated with atherosclerotic plaque development. Brachial diameter could be a tool with a predictive significance.
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Artéria Braquial/fisiopatologia , Placa Aterosclerótica/epidemiologia , Placa Aterosclerótica/fisiopatologia , Pós-Menopausa , Idoso , Artéria Braquial/diagnóstico por imagem , Artérias Carótidas/diagnóstico por imagem , Artérias Carótidas/fisiopatologia , Doenças das Artérias Carótidas/diagnóstico por imagem , Doenças das Artérias Carótidas/fisiopatologia , Feminino , Seguimentos , Frequência Cardíaca , Humanos , Hipertrofia/diagnóstico por imagem , Hipertrofia/fisiopatologia , Incidência , Modelos Logísticos , Pessoa de Meia-Idade , Placa Aterosclerótica/diagnóstico por imagem , Estudos Retrospectivos , Fatores de Risco , Ultrassonografia , População BrancaRESUMO
OBJECTIVE: This article presents a case report of restoration of anterior teeth using an indirect technique with composite veneers in order to restore the dental anatomy and to provide aesthetic and function of anterior teeth. MATERIALS AND METHODS: A treatment of upper anterior teeth with indirect micro-hybrid composite restoration was proposed to a 40-year-old woman with old discolored and fractured ceramic veneers. Upper six anterior teeth were prepared and, after impressions with VPS of maxillary arche, the composite veneers were placed. DISCUSSION AND RESULTS: There are several advantages offered by indirect techniques compared to direct techniques. The increased practice of veneering technique with indirect composites is due to improvement in the properties of composite materials in the last years. The results are very favourable and the patient is satisfied. CONCLUSIONS: The restorations with composite veneers have proved durable and aesthetic, protect tooth structure and aesthetic and function is predictably re-established.
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UNLABELLED: Prosthetic-restorative approach for the restoration of tooth wear. Case report OBJECTIVE: This article presents a case report of combined prosthetic-adhesive rehabilitation in a patient with a generalized tooth wear. METHODS: A combined treatment adhesive - prosthetic was proposed to a male patient of 65 years old having a clinically significant tooth wear, with dentine exposure and with a reduction in clinical crown height. The erosive/abrasive worn dentition have been reconstructed with direct resin composite restorations on the posterior teeth and with zirconia crown on the anterior teeth. RESULTS: Direct composite restorations have a number of distinct advantages. These restorations have proved durable and aesthetic, protect tooth structure and posterior occlusal contact is predictably re-established. CONCLUSIONS.: A combinations of direct and indirect restorations, based on the new vertical dimension of occlusion (VDO), can help to reestablish anatomy and function.
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AIM: The mechanisms of vascular remodeling have attracted great interest since it is a phenomenon related to cardiovascular diseases. We would like to examine studies that contributed to clarify the remodeling mechanisms, to explore the different faces of atherosclerosis process. DATA SYNTHESIS: A number of invasive and non-invasive vascular assessment methods were developed, to detect the early sign of atherosclerosis. It became clear that the invasive tests were not applicable to large-scale studies. Consequently, a non-invasive test was developed. Studies showed that the endothelial function evaluation is a predictor of future cardiac events in individuals at cardiovascular risk and in those with established disease. However, analyzing several works, an interesting concept emerged, i.e., the inverse relation between endothelium-dependent dilation and vessel size, since large vessel tend not to dilate significantly. This notion emphasized the role of basal diameter on vascular response. In particular, as brachial artery diameter is the measure on which FMD is based, it could add more information in clinical evaluation, simplifying the assessment. Several studies showed that morphological change of brachial artery is a better indicator of the extent of coronary disease rather than FMD. Other studies showed that brachial diameter has predictive significance in the stratification of cardiovascular risk. CONCLUSION: Brachial diameter is a useful and simple tool. It should be incorporated into the overall assessment of cardiovascular risk but further studies are warranted to determine the final place of brachial diameter assessment in routine clinical setting.
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Aterosclerose/diagnóstico , Artéria Braquial/anatomia & histologia , Artéria Braquial/fisiopatologia , Doença das Coronárias/diagnóstico , Animais , Aterosclerose/fisiopatologia , Doença das Coronárias/fisiopatologia , Endotélio Vascular/anatomia & histologia , Endotélio Vascular/fisiopatologia , Humanos , Modelos Animais , Fatores de RiscoRESUMO
BACKGROUND AND AIM: Vascular remodelling is one of the possible compensatory mechanisms in response to artery wall injury. It was demonstrated that post-menopausal women with carotid atherosclerosis had a larger brachial artery diameter (BAD) than women without carotid plaques. Therefore, it is possible to hypothesise that artery enlargement could be a marker of early atherosclerosis. To investigate the eventual association between carotid and brachial artery diameter and disease affecting the vascular wall, we performed a case-control study in post-menopausal women with or without type II diabetes mellitus. METHODS AND RESULTS: We enrolled 28 cases (with diabetes) and 56 controls (without diabetes) matched for age and carotid atherosclerosis presence and severity. On the t-test, women with diabetes showed significantly larger brachial and common carotid artery diameters and, as expected, higher plasma glucose level and homeostasis model assessment (HOMA) than women without diabetes. On the univariate analysis, only plasma glucose level results correlated to BAD in the whole sample. Multivariate analysis confirmed that diabetes was a good predictor of brachial and carotid artery diameter, while age, systolic blood pressure and triglycerides were correlated only to the carotid diameter. CONCLUSIONS: Our data confirm that vascular remodelling is a systemic process occurring in conditions related to atherosclerosis, such as type II diabetes. Indeed, artery diameter could be a marker of early response of vessel wall to injury.
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Artéria Braquial/patologia , Doenças das Artérias Carótidas/patologia , Diabetes Mellitus Tipo 2/patologia , Pós-Menopausa , Idoso , Glicemia/análise , Artéria Braquial/diagnóstico por imagem , Doenças das Artérias Carótidas/diagnóstico por imagem , Artéria Carótida Primitiva/diagnóstico por imagem , Artéria Carótida Primitiva/patologia , Diabetes Mellitus Tipo 2/sangue , Feminino , Humanos , Pessoa de Meia-Idade , Análise Multivariada , UltrassonografiaRESUMO
Multitasking nanoparticles are gaining great attention for smart drug delivery systems. The exploration of the nano-scale opens new concrete opportunities for revealing new properties and undiscovered cell-particle interactions. Here we present a biodegradable nanoporous silicon nanoparticle that can be successfully employed for in vivo targeted drug delivery and sustained release. The bare nanoporous nanocarriers can be accurately designed and fabricated with an effective control of porosity, surface chemistry and particle size, up to a few nm. The proposed nanoparticles exhibit several remarkable features including high payload, biodegradability, no toxicity, and multiple loading in water without the need of additional chemical reagents at room temperature. The targeting strategy is based on phage display technology that was successfully used to discover cell surface binding peptide for murine B lymphoma A20 cell line. The peptide used in combination with the nanoporous nanoparticles allows an efficient in vivo targeting, a sustained release and a sensible therapeutic effect.