Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 20 de 30
Filtrar
Más filtros

Banco de datos
País/Región como asunto
Tipo del documento
Intervalo de año de publicación
1.
Rheumatology (Oxford) ; 62(9): 3075-3083, 2023 09 01.
Artículo en Inglés | MEDLINE | ID: mdl-36692142

RESUMEN

OBJECTIVE: GCA is the commonest primary systemic vasculitis in adults, with significant health economic costs and societal burden. There is wide variation in access to secondary care GCA services, with 34% of hospitals in England not having any formal clinical pathway. Quality standards provide levers for change to improve services. METHODS: The multidisciplinary steering committee were asked to anonymously put forward up to five aspects of service essential for best practice. Responses were qualitatively analysed to identify common themes, subsequently condensed into domain headings, and ranked in order of importance. Quality standards and metrics for each domain were drafted, requiring a minimum 75% agreement. RESULTS: 13 themes were identified from the initial suggestions. Nine quality standards with auditable metrics were developed from the top 10 themes. Patient Access, glucocorticoid use, pathways, ultrasonography, temporal artery biopsy, PET scan access, rheumatology/ophthalmology expertise, education, multidisciplinary working have all been covered in these quality standards. Access to care is a strand that has run through each of the developed standards. An audit tool was developed as part of this exercise. CONCLUSION: These are the first consensus auditable quality standards developed by clinicians from rheumatology and ophthalmology, nursing representatives and involvement of a patient charity. We hope that these standards will be adopted by commissioning bodies to provide levers for change from the improvement of patient care of individuals with GCA.


Asunto(s)
Arteritis de Células Gigantes , Reumatología , Humanos , Arteritis de Células Gigantes/patología , Atención Secundaria de Salud , Arterias Temporales/patología , Tomografía de Emisión de Positrones
2.
J Neuroophthalmol ; 41(2): e202-e204, 2021 Jun 01.
Artículo en Inglés | MEDLINE | ID: mdl-32590613

RESUMEN

ABSTRACT: A 39-year-old woman presented with acute visual loss in her right eye. Brain and orbit MRI demonstrated T2 hyperintensity along a long section of her right optic nerve, chiasm, and tract with no evidence of decussation of the inflammation. Subsequent seropositivity for the aquaporin 4 antibody confirmed a diagnosis of neuromyelitis optica. Posterior pathway involvement is typical in neuromyelitis optica and supports the hypothesis that the condition is an astrocytopathy. Furthermore, the absence of decussation in the condition may be a function of astrocyte localization within the chiasm.


Asunto(s)
Astrocitos/patología , Neuromielitis Óptica/diagnóstico , Quiasma Óptico/patología , Nervio Óptico/patología , Adulto , Femenino , Humanos , Imagen por Resonancia Magnética
3.
J Exp Child Psychol ; 171: 113-130, 2018 07.
Artículo en Inglés | MEDLINE | ID: mdl-29571028

RESUMEN

By their fourth year of life, children are expert imitators, but it is unclear how this ability develops. One approach suggests that certain types of experience might forge associations between the sensory and motor representations of an action that may facilitate imitation at a later time. Sensorimotor experience of this sort may occur when an infant's action is imitated by a caregiver or when socially synchronous action occurs. This learning approach, therefore, predicts that the strength of sensory-motor associations should depend on the frequency and quality of previous experience. Here, we tested this prediction by examining automatic imitation, that is, the tendency of an action stimulus to facilitate the performance of that action and interfere with the performance of an incompatible action. We required children (aged between 3 years 8 months and 7 years 11 months) to respond to actions performed by an experimenter (e.g., two hands clapping) with both compatible actions (i.e., two hands clapping) and incompatible actions (i.e., two hands waving) at different stages in the experimental procedure. As predicted by a learning account, actions thought to be performed in synchrony (i.e., clapping/waving) produced stronger automatic imitation effects when compared with actions where previous sensorimotor experience is likely to be more limited (e.g., pointing/hand closing). Furthermore, these automatic imitation effects were not found to vary with age, with both compatible and incompatible responses quickening with age. These findings suggest a role for sensorimotor experience in the development of imitative ability.


Asunto(s)
Desarrollo Infantil , Conducta Imitativa , Aprendizaje , Niño , Preescolar , Femenino , Mano , Humanos , Masculino
4.
Behav Brain Sci ; 40: e398, 2017 01.
Artículo en Inglés | MEDLINE | ID: mdl-29342815

RESUMEN

According to Keven & Akins (K&A), infant orofacial gestures may not reflect imitative responses. Here, we emphasise that these actions nonetheless represent a significant feature of the infant's early sensorimotor experience, and therefore may play a key role in the development of imitative capacities. We discuss how the ideas proposed in the target article could contribute substantially to experiential accounts of imitation.


Asunto(s)
Conducta Imitativa , Habla , Gestos , Humanos , Lactante , Recién Nacido , Relaciones Interpersonales , Movimiento
5.
Biology (Basel) ; 12(9)2023 Aug 29.
Artículo en Inglés | MEDLINE | ID: mdl-37759581

RESUMEN

Glucocorticoids (GCs) are mammalian steroid hormones involved in a variety of physiological processes, including metabolism, the immune response, and cardiovascular functions. Due to their link to the physiological stress response, GC measurement is a valuable tool for conservation and welfare assessment in animal populations. GC levels can be measured from different matrices, such as urine and feces. Moreover, especially in captive settings, measuring GCs from saliva samples proved particularly useful as those samples can be collected non-invasively and easily from trained animals. Salivary GC levels can be measured using a variety of analytical methods, such as enzyme immunoassays. However, it is crucial to validate the analytical method for each specific application and species when using a new matrix. Using high-pressure liquid chromatography and a cortisol enzyme immunoassay, we show that the main glucocorticoids secreted in the saliva of squirrel monkeys and brown capuchin monkeys are cortisol and cortisone. Our biological validation found the expected salivary cortisol level to decline throughout the day. Our findings support the reliability of salivary cortisol measurements and their potential to be used as a valid tool in research and welfare assessment for these non-human primates.

6.
Rheumatol Adv Pract ; 7(3): rkad095, 2023.
Artículo en Inglés | MEDLINE | ID: mdl-38033363

RESUMEN

Objective: The aim was to determine prevalent co-morbidities in cases with PMR or GCA compared with matched controls. Methods: This was a nested, cross-sectional case-control study within the UK Biobank, which recruited participants aged 40-69 years. Case status was defined as self-reported prior diagnosis of PMR or GCA. Ten controls per case were matched for age, sex, ethnicity and assessment centre. Associations with selected self-reported co-morbidities were studied using conditional logistic regression. Results: Of PMR (n = 1036) or GCA (n = 102) cases, 72% were female, 98% White, and 58% reported current use of glucocorticoids. Mean age was 63 years. At the time of the assessment visit, compared with controls, PMR/GCA cases were more likely to report poor general health and at least several days of low mood in the past 2 weeks. PMR was associated with hypothyroidism [odds ratio (OR) = 1.34; 95% CI = 1.07, 1.67] and ever-use of HRT (OR = 1.26; 95% CI = 1.07, 1.47). Regarding common co-morbidities, PMR and GCA were both associated with hypertension (PMR: OR = 1.21; 95% CI = 1.06, 1.39; GCA: OR = 1.86; 95% CI = 1.23, 2.81) and cataract (PMR: OR = 1.51; 95% CI = 1.19, 1.93; GCA: OR = 3.84; 95% CI = 2.23, 6.60). Additionally, GCA was associated with depression (OR = 3.05; 95% CI = 1.59, 5.85). Neither condition was associated with diabetes. Conclusion: Participants with a history of PMR/GCA, including those not currently taking glucocorticoids, rated their health as poorer than matched controls. Some previously described disease associations (hypothyroidism and early menopause) were replicated. Hypertension and cataract, both of which can be exacerbated by long-term glucocorticoid therapy, were over-represented in both diseases, particularly GCA.

7.
Eur J Clin Invest ; 42(11): 1173-9, 2012 Nov.
Artículo en Inglés | MEDLINE | ID: mdl-22803952

RESUMEN

BACKGROUND: Biomarkers of cardiovascular (CV) risk are tests that predict a patient's risk of future CV events. Recently, two proteins involved in vascular calcification; serum levels of osteoprotegerin (OPG) and tumour necrosis factor-related apoptosis-inducing ligand (TRAIL) have emerged as potentially useful biomarkers. OPG levels are positively correlated with CV risk, whereas TRAIL levels show a negative correlation. Exercise training is known to reduce risk factors for CV disease by improving metabolism, vascular biology and blood flow. This study examined the effects of a 6-month exercise training programme on levels of OPG and TRAIL. Pulse wave velocity (PWV) and high-sensitivity C-reactive protein (hsCRP) were measured for comparative purposes. MATERIALS AND METHODS: Overweight and obese patients undertook a 6-month exercise programme. Patients participated in 4 h of primarily aerobic exercise per week of which 2 h were supervised. At the beginning and end of the programme, anthropometric measurements, PWV and serum levels of OPG, TRAIL and hsCRP were measured. RESULTS: A total of 21 patients (17 men) aged 55.2 ± 10 years completed the programme. Mean body mass index decreased from 34.1 ± 5.8 to 32.6 ± 5.4 kg/m(2) (P<0.05), while waist circumference decreased from 111.8 ± 12.4 to 109.6 ± 12.8 cm (P<0.05). PWV decreased from 9.2 to 8.5 m/s (P<0.02). OPG, TRAIL and hsCRP levels did not change significantly. CONCLUSIONS: Exercise training reduced PWV but not OPG, TRAIL or hsCRP in this population. These data suggest that while an intervention of this nature improves vascular tone, it does not exert significant effects on serum biomarkers related to atherosclerotic inflammation and calcification.


Asunto(s)
Proteína C-Reactiva/análisis , Ejercicio Físico/fisiología , Obesidad/sangre , Osteoprotegerina/sangre , Ligando Inductor de Apoptosis Relacionado con TNF/sangre , Biomarcadores/sangre , Índice de Masa Corporal , Enfermedades Cardiovasculares/diagnóstico , Enfermedades Cardiovasculares/metabolismo , Enfermedades Cardiovasculares/prevención & control , Femenino , Humanos , Masculino , Persona de Mediana Edad , Análisis de la Onda del Pulso , Factores de Riesgo , Circunferencia de la Cintura
8.
Cureus ; 14(10): e29804, 2022 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-36337822

RESUMEN

An 81-year-old Afro-Caribbean woman presented with a two-week history of a dull headache in her temples, jaw claudication especially when chewing food, and reduced vision in her eyes, more pronounced in the right eye. There was no past medical or family history of hypothyroidism or autoimmunity. On examination, the vision was counting fingers in the right eye and 6/36 in the left eye, best corrected. Dilated fundus examination revealed multiple peripapillary cotton wool spots in both eyes though more pronounced in the right. Her erythrocyte sedimentation rate (ESR) was 120 mm/h, and her C-reactive protein (CRP) level was 79 mg/L. A temporal artery ultrasound scan was undertaken immediately which demonstrated a halo sign around both temporal arteries and so a giant cell arteritis (GCA) diagnosis was made. The patient was commenced on daily high-dose IV methylprednisolone 1 g for three days and referred to the rheumatology team. Her vision improved to 1/60 right and 6/9 left eye best corrected at three days post-treatment. At 12 months after the initial presentation, her vision stabilized at 6/60 in the right and 6/6 with complete visual fields in the left eye. Cotton wool spots can be a sign of GCA. Their appearance with or without characteristic systemic symptoms should prompt urgent evaluation.

9.
Diabetes Res Clin Pract ; 189: 109947, 2022 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-35709911

RESUMEN

AIM: Report the outcomes of pregnant women with type 1 and type 2 diabetes and to identify modifiable and non-modifiable factors associated with poor outcomes. METHODS: Retrospective analysis of pregnancy preparedness, pregnancy care and outcomes in the Republic of Ireland from 2015 to 2020 and subsequent multivariate analysis. RESULTS: In total 1104 pregnancies were included. Less than one third attended pre-pregnancy care (PPC), mean first trimester haemoglobin A1c was 7.2 ± 3.6% (55.5 ± 15.7 mmol/mol) and 52% received pre-conceptual folic acid. Poor preparation translated into poorer pregnancy outcomes. Livebirth rates (80%) were comparable to the background population however stillbirth rates were 8.7/1000 (four times the national rate). Congenital anomalies occurred in 42.5/1000 births (1.5 times the background rate). More than half of infants were large for gestational age and 47% were admitted to critical care. Multivariate analyses showed strong associations between non-attendance at PPC, poor glycaemic control and critical care admission (adjusted odds ratio of 1.68 (1.48-1.96) and 1.61 (1.43-1.86), p < 0.05 respectively) for women with type 1 diabetes. Smoking and teratogenic medications were also associated with critical care admission and hypertensive disorders of pregnancy. CONCLUSION: Pregnancy outcomes in women with diabetes are suboptimal. Significant effort is needed to optimize the modifiable factors identified in this study.


Asunto(s)
Diabetes Mellitus Tipo 2 , Embarazo en Diabéticas , Estudios de Cohortes , Diabetes Mellitus Tipo 2/tratamiento farmacológico , Femenino , Humanos , Irlanda/epidemiología , Embarazo , Resultado del Embarazo/epidemiología , Embarazo en Diabéticas/epidemiología , Estudios Retrospectivos
11.
Diabetes Metab Res Rev ; 26(6): 496-502, 2010 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-20809534

RESUMEN

BACKGROUND: Osteoprotegerin (OPG), receptor activator for nuclear factor kappa beta ligand (RANKL) and tumour necrosis factor-related apoptosis-inducing ligand (TRAIL) are newly discovered members of the tumour necrosis factor-alpha receptor superfamily. While their role in bone metabolism is well described, their function within the vasculature is poorly understood. OPG inhibits vascular calcification in vitro and high serum levels have been demonstrated in type 2 diabetes, but serum RANKL and TRAIL and their potential correlation with well-established biomarkers of subclinical vascular inflammation such as high-sensitivity C-reactive protein (hsCRP) and interleukin-6 (IL-6) have not been described. METHODS: Sixty-two patients with well-controlled type 2 diabetes and an age, gender and body mass index-matched group of 58 healthy individuals were recruited. Serum OPG, RANKL and TRAIL were measured using commercial enzyme-linked immunosorbent assays, as were hsCRP and IL-6. RESULTS: Serum OPG, IL-6 and hsCRP levels, but not RANKL or TRAIL, were higher in patients with type 2 diabetes mellitus than in healthy controls, after adjustment for age and gender. After exclusion of diabetes patients with a history of micro- or macrovascular disease, OPG remained significantly higher in those with diabetes, but IL-6 and hsCRP levels were no longer elevated. There was a positive correlation between OPG and IL-6 in the group as a whole, but no correlation was found between RANKL or TRAIL and either hsCRP or IL-6. CONCLUSION: OPG, but not RANKL or TRAIL, is significantly increased in type 2 diabetes. Higher OPG (but not IL-6 or hsCRP) in those without vascular disease suggests these biomarkers reflect separate pathophysiological processes in the vasculature.


Asunto(s)
Biomarcadores/sangre , Diabetes Mellitus Tipo 2/sangre , Inflamación/sangre , Osteoprotegerina/metabolismo , Proteína C-Reactiva/metabolismo , Diabetes Mellitus Tipo 2/complicaciones , Angiopatías Diabéticas/sangre , Femenino , Humanos , Interleucina-6/sangre , Masculino , Persona de Mediana Edad , Ligando RANK/sangre , Ligando Inductor de Apoptosis Relacionado con TNF/sangre
12.
Clin Endocrinol (Oxf) ; 71(5): 709-14, 2009 Nov.
Artículo en Inglés | MEDLINE | ID: mdl-19302582

RESUMEN

BACKGROUND AND OBJECTIVES: Transsphenoidal surgery is indicated for patients with nonfunctioning pituitary adenomas (NFPAs) causing compressive symptoms. Previous studies attempting to define the rate of recurrence/regrowth of surgically treated but radiation-naïve NFPAs were somewhat limited by selection bias and/or small numbers and/or lack of consistency of findings between studies. A better understanding of the natural history of this condition could allow stratification of recurrence risk and inform future management. We aimed to define the natural history of a large, mainly unselected cohort with surgically treated, radiotherapy (RT)-naïve NFPAs and to try to identify predictors of recurrence/regrowth. DESIGN: Case-note analysis of all patients who underwent surgery for NFPA in our hospital between 1980 and 2006 was undertaken. Median follow-up was 5.7 (range 1-25) years. PATIENTS: A total of 212 patients were identified of which 159 were suitable for analysis. 93% did not receive post-operative RT. MEASUREMENT: Post-operative recurrent/regrowth was defined by any increase in tumour remnant size on serial post-operative pituitary imaging. RESULTS: Recurrence/regrowth was documented in 53 patients (33.5%). Multivariate analysis revealed size of the post-operative tumour remnant and length of follow-up to be the two major determinants of recurrence/regrowth. The presence of a tumour with an extrasellar remnant was associated with the highest risk of recurrence (odds ratio 3.73 [CI: 1.97-7.09]), while no recurrence was seen in those with no residual tumour post-operatively and regrowth risk was intermediate for those with remaining intrasellar remnant. CONCLUSION: These results indicate that patients with post-operative tumour with an extrasellar remnant should be considered routinely for adjuvant RT to reduce the risk of tumour regrowth while those with no residual tumour can be safely observed. Individualized decisions should be made for patients with an intrasellar remnant.


Asunto(s)
Adenoma/cirugía , Neoplasias Hipofisarias/cirugía , Radioterapia , Adolescente , Adulto , Supervivencia sin Enfermedad , Femenino , Humanos , Masculino , Persona de Mediana Edad , Modelos de Riesgos Proporcionales , Resultado del Tratamiento , Adulto Joven
13.
Clin Transplant ; 23(5): 616-20, 2009.
Artículo en Inglés | MEDLINE | ID: mdl-19732096

RESUMEN

INTRODUCTION: The aim of this study was to determine the cardiovascular (CV) risk factor response in Irish patients with type 1 diabetes following simultaneous pancreas and kidney transplantation (SPK), analyzing response based on mode of immunosuppression and surgical drainage in a uniquely homogenous population. METHODS: A retrospective review of SPKs carried out between 1993 and 2005 in the National Renal and Pancreatic Centre of Ireland was performed. Weight, glycated hemoglobin (HBA1c), lipid profile, and blood pressure (BP) were measured pre- and post-operatively. RESULTS: Fifty-eight SPK patients with functioning grafts were analyzed. Thirty-two were male. Following transplantation, mean HbA1c fell from 8.1 (+/-1.5) to 5.2 (+/-0.5)% (p < 0.0001), total cholesterol from 5.2 (+/-1.2) to 4.5 (+/-1.0) mmol/L (p = 0.0004), serum triglycerides from 1.5 (+/-0.6) to 1.1 (+/-0.6) mmol/L (p < 0.0001), and serum creatinine from 699.3 (+/-273.4) to 162.5 (+/-135.8) mmol/L (p < 0.0001). Systolic and diastolic BP fell from 148.5 (+/-23.3) to 136.9 (+/-22.4) mmHg (p = 0.02), and 84.8 (+/-11.7) to 77.8 (+/-10.4) mmHg (p = 0.003), respectively. Cholesterol reduction was significantly greater in the group that received cyclosporine (n = 29) compared with a tacrolimus and mycophenolic acid mofetil (MMF) combination (1.3 +/- 0.3 vs. 0.2 +/- 0.2 mmol/L, p = 0.003). Choice of exocrine vs. endocrine graft drainage did not affect risk factor response. CONCLUSION: SPK resulted in significant improvements both in glucose control and other measured CV risk factors.


Asunto(s)
Enfermedades Cardiovasculares/etiología , Diabetes Mellitus Tipo 1/cirugía , Rechazo de Injerto/prevención & control , Fallo Renal Crónico/cirugía , Trasplante de Riñón , Trasplante de Páncreas , Complicaciones Posoperatorias , Adulto , Glucemia/metabolismo , Enfermedades Cardiovasculares/fisiopatología , Colesterol/metabolismo , Ciclosporina/uso terapéutico , Drenaje , Femenino , Hemoglobina Glucada/metabolismo , Rechazo de Injerto/etiología , Humanos , Inmunosupresores/uso terapéutico , Masculino , Ácido Micofenólico/uso terapéutico , Pronóstico , Estudios Retrospectivos , Factores de Riesgo , Tasa de Supervivencia , Tacrolimus/uso terapéutico , Resultado del Tratamiento , Triglicéridos/metabolismo
14.
J Comp Psychol ; 131(4): 337-347, 2017 Nov.
Artículo en Inglés | MEDLINE | ID: mdl-28857603

RESUMEN

Stimulus-response (S-R) compatibility effects occur when observing certain stimuli facilitate the performance of a related response and interfere with performing an incompatible or different response. Using stimulus-response action pairings, this phenomenon has been used to study imitation effects in humans, and here we use a similar procedure to examine imitative biases in nonhuman primates. Eight capuchin monkeys (Sapajus spp.) were trained to perform hand and mouth actions in a stimulus-response compatibility task. Monkeys rewarded for performing a compatible action (i.e., using their hand or mouth to perform an action after observing an experimenter use the same effector) performed significantly better than those rewarded for incompatible actions (i.e., performing an action after observing an experimenter use the other effector), suggesting an initial bias for imitative action over an incompatible S-R pairing. After a predetermined number of trials, reward contingencies were reversed; that is, monkeys initially rewarded for compatible responses were now rewarded for incompatible responses, and vice versa. In this 2nd training stage, no difference in performance was identified between monkeys rewarded for compatible or incompatible actions, suggesting any imitative biases were now absent. In a 2nd experiment, 2 monkeys learned both compatible and incompatible reward contingencies in a series of learning reversals. Overall, no difference in performance ability could be attributed to the type of rule (compatible-incompatible) being rewarded. Together, these results suggest that monkeys exhibit a weak bias toward action copying, which (in line with findings from humans) can largely be eliminated through counterimitative experience. (PsycINFO Database Record


Asunto(s)
Conducta Animal/fisiología , Cebus/fisiología , Conducta Imitativa/fisiología , Aprendizaje Social/fisiología , Animales , Femenino , Masculino
15.
J Diabetes Res ; 2015: 846807, 2015.
Artículo en Inglés | MEDLINE | ID: mdl-26064990

RESUMEN

Statin therapy improves lipid profiles and reduces vascular inflammation, but its effects on central arterial stiffness in type 2 diabetes are unclear. The aim of this study was to determine whether statin therapy reduces central arterial stiffness, in a dose-dependent manner, in male patients with type 2 diabetes. Fifty-one patients ceased statin therapy for 6 weeks, followed by randomisation to either 10 or 80 mg of atorvastatin. At randomization, 3 and 12 months, central arterial stiffness was measured via carotid-femoral pulse wave velocity (PWV), along with serum markers of vascular inflammation including high-sensitivity c-reactive protein (hsCRP) and osteoprotegerin (OPG). PWV decreased from 10.37 ± 1.30 to 9.68 ± 1.19 m/sec (p < 0.01 from baseline) at 3 months and 9.10 ± 1.17 m/sec (p < 0.001 from baseline) at 12 months. hsCRP and OPG decreased significantly at 3 and 12 months. Reductions in PWV did not differ significantly between the groups. Baseline PWV and OPG values correlated strongly (r = 0.48, p < 0.01), as did their response to atorvastatin over 12 months (r = 0.36 delta-OPG and delta-PWV, p < 0.01). Atorvastatin therapy appeared to reduce central arterial stiffness in male type 2 diabetes, with no dose-dependent effect observed. The correlation observed between reductions in PWV and OPG suggests that atorvastatin reduces PWV via direct anti-inflammatory effects on the vasculature.


Asunto(s)
Atorvastatina/uso terapéutico , Diabetes Mellitus Tipo 2/tratamiento farmacológico , Inhibidores de Hidroximetilglutaril-CoA Reductasas/uso terapéutico , Rigidez Vascular/efectos de los fármacos , Adulto , Anciano , Anciano de 80 o más Años , Atorvastatina/farmacología , Biomarcadores/sangre , Proteína C-Reactiva/metabolismo , Diabetes Mellitus Tipo 2/sangre , Diabetes Mellitus Tipo 2/fisiopatología , Humanos , Inhibidores de Hidroximetilglutaril-CoA Reductasas/farmacología , Masculino , Persona de Mediana Edad , Osteoprotegerina/sangre , Análisis de la Onda del Pulso , Resultado del Tratamiento , Rigidez Vascular/fisiología
18.
Metabolism ; 62(1): 34-8, 2013 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-22841521

RESUMEN

OBJECTIVE: Insulin resistance (IR) is associated with low adiponectin and elevated high sensitivity C-reactive protein (hsCRP). Osteoprotegerin (OPG) has been shown to be elevated in type 2 diabetes, but whether it reflects underlying IR is unclear. We aimed to compare the ability of serum OPG with adiponectin and hsCRP to act as a marker for IR in individuals with normal and abnormal glucose tolerance. MATERIALS/METHODS: 115 men underwent a 75 g oral glucose tolerance test. OPG, hsCRP and adiponectin were measured using ELISA. IR was assessed using the homeostasis model assessment of insulin resistance (HOMA-IR). RESULTS: Men with abnormal glucose tolerance (n=38) were older (58.3±11.2 vs 47.3±11.4 years, P<.001), had higher body mass index (BMI) (31.1±2.9 vs 27.9±3.2 kg/m(2), P<.001) and were more insulin resistant (median (I.Q.) HOMA-IR 5.88 (3.38) vs 1.13 (1.14), P<.001) than those with normal glucose tolerance (n=77). After adjustment for age and BMI, OPG (6.28 (2.32) vs 5.16 (1.86) pmol/L, P<.001) and hsCRP (2.07 (5.47) vs 0.78 (1.05) mg/L, P<.001) were higher and adiponectin (3.02±1.17 vs 4.78±2.38 µg/mL, P<.001) was lower in those with AGT. After adjustment for age and BMI, adiponectin (r=-0.317, P<.001) and hsCRP (r=0.318, P<.001), but not OPG (r=0.126, P=.196) correlated with HOMA-IR. On multiple linear regression analysis, adiponectin and hsCRP but not OPG were independent predictors of HOMA-IR. CONCLUSIONS: OPG is higher in individuals with abnormal glucose tolerance, but unlike adiponectin and hsCRP, does not correlate with HOMA-IR, suggesting its elevation within this cohort of individuals is due to factors other than insulin resistance.


Asunto(s)
Adiponectina/sangre , Proteína C-Reactiva/metabolismo , Resistencia a la Insulina/fisiología , Osteoprotegerina/sangre , Área Bajo la Curva , Biomarcadores/sangre , Estudios de Cohortes , Ensayo de Inmunoadsorción Enzimática , Prueba de Tolerancia a la Glucosa , Humanos , Modelos Lineales , Masculino , Persona de Mediana Edad
19.
J Clin Endocrinol Metab ; 97(4): E608-12, 2012 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-22319044

RESUMEN

CONTEXT: Raised maternal body mass index (BMI) in association with hyperglycemia is associated with adverse pregnancy outcome. The contribution of raised BMI as an independent risk factor for adverse pregnancy outcome is of growing concern and increasing prevalence. OBJECTIVE: The aim of this study was to investigate the effects of raised maternal BMI on pregnancy outcome in glucose-tolerant women using the International Association of Diabetes and Pregnancy Study Groups criteria. PARTICIPANTS AND SETTING: We studied a cohort of glucose-tolerant, pregnant women (n = 3656) who were attending antenatal obstetric clinics and were recruited to a universal screening program for gestational diabetes under the ATLANTIC-DIP partnership. DESIGN: We conducted a prospective observational study of pregnancy outcome. Maternal outcomes include glucose, delivery mode, pregnancy-induced hypertension, preeclampsia, antepartum hemorrhage, and postpartum hemorrhage. Fetal outcomes included birthweight, congenital malformation, fetal death, neonatal jaundice, hypoglycemia, and respiratory distress. RESULTS: Increasing maternal BMI was associated with adverse pregnancy outcomes: higher cesarean section rates, preeclampsia, pregnancy-induced hypertension, increased birth weight, and congenital malformation. The association of glucose with adverse pregnancy outcome was weak and did not interact with raised BMI. A BMI threshold of 28 kg/m(2) was associated with a significant rise in adverse pregnancy outcome. CONCLUSIONS: Raised maternal BMI, within the overweight range, is associated with adverse pregnancy outcomes. These adverse effects of BMI occur independently of maternal glucose. It is apparent that pregnancy unmasks an underlying unhealthy metabolic milieu in obese and overweight women.


Asunto(s)
Índice de Masa Corporal , Fenómenos Fisiologicos Nutricionales Maternos , Hipernutrición/fisiopatología , Complicaciones del Embarazo/etiología , Adolescente , Adulto , Peso al Nacer , Glucemia/análisis , Cesárea , Estudios de Cohortes , Anomalías Congénitas/etiología , Femenino , Humanos , Hipertensión Inducida en el Embarazo/etiología , Irlanda/epidemiología , Persona de Mediana Edad , Hipernutrición/sangre , Hipernutrición/metabolismo , Preeclampsia/etiología , Embarazo , Estudios Prospectivos , Riesgo , Adulto Joven
20.
Eur J Endocrinol ; 165(6): 953-9, 2011 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-21937504

RESUMEN

OBJECTIVE: Gestational diabetes (GDM) is associated with adverse fetal and maternal outcomes, and identifies women at risk of future type 2 diabetes mellitus (T2DM). Breast-feeding may improve post partum maternal glucose tolerance. Our objective was to identify the prevalence of post partum dysglycemia after GDM, to delineate associated factors and to examine the effect of lactation on post partum glucose tolerance. DESIGN: We compared post partum 75 g oral glucose tolerance test (OGTT) results from 300 women with GDM and 220 controls with normal gestational glucose tolerance (NGT) in five regional centers. Breast-feeding data was collected at time of OGTT. Methods Post partum OGTT results were classified as normal (fasting plasma glucose (FPG) <5.6 mmol/l, 2 h <7.8 mmol/l) and abnormal (impaired fasting glucose (IFG), FPG 5.6-6.9 mmol/l; impaired glucose tolerance (IGT), 2 h glucose 7.8-11 mmol/l; IFG+IGT; T2DM, FPG ≥7 mmol/l±2 h glucose ≥11.1 mmol/l). Binary logistic regression was used to identify factors predictive of persistent hyperglycemia. RESULTS: Five hundred and twenty women were tested; six (2.7%) with NGT in pregnancy had post partum dysglycemia compared with 57 (19%) with GDM in index pregnancy (P<0.001). Non-European ethnicity (odds ratio (OR) 3.40; 95% confidence interval (CI) 1.45-8.02, P=0.005), family history of T2DM (OR 2.14; 95% CI 1.06-4.32, P=0.034), and gestational insulin use (OR 2.62; 95% CI 1.17-5.87, P=0.019) were associated with persistent dysglycemia. The prevalence of persistent hyperglycemia was significantly lower in women who breast-fed vs bottle-fed post partum (8.2 vs 18.4%, P<0.001). CONCLUSIONS: Non-European ethnicity, gestational insulin use, family history of T2DM, and elevated body mass index were associated with persistent dysglycemia after GDM. Breast-feeding may confer beneficial metabolic effects after GDM and should be encouraged.


Asunto(s)
Lactancia Materna , Diabetes Mellitus Tipo 2/sangre , Diabetes Gestacional/sangre , Intolerancia a la Glucosa/sangre , Periodo Posparto/sangre , Adolescente , Adulto , Océano Atlántico/epidemiología , Glucemia/metabolismo , Alimentación con Biberón/tendencias , Lactancia Materna/métodos , Lactancia Materna/tendencias , Diabetes Mellitus Tipo 2/epidemiología , Diabetes Gestacional/epidemiología , Femenino , Intolerancia a la Glucosa/epidemiología , Humanos , Irlanda/epidemiología , Persona de Mediana Edad , Embarazo , Prevalencia , Adulto Joven
SELECCIÓN DE REFERENCIAS
DETALLE DE LA BÚSQUEDA