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1.
Subst Use Misuse ; 59(6): 840-846, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-38247162

RESUMO

Background: Delta-8 THC is a federally unregulated psychoactive cannabis product rising in popularity. However, little is known regarding its retail availability. Method: We assessed Delta-8 THC retail by calling locations with alcohol, tobacco, and/or consumable hemp retail licenses in Fort Worth, Texas, before and after Texas announced ongoing litigation surrounding Delta-8 THC legality. We linked census block area deprivation index (ADI) scores (1-10; 10 = most disadvantaged) to locations. Logistic regression models examined associations between license type, ADI, ADI*license type interaction, and Delta-8 availability at each time. Results: Retail availability was 11% at Time 1 (n = 133/1,223) and 9% at Time 2 (n = 94/1,026). Alcohol (aORTime1 = 0.18, 95%CI = 0.12,0.28; aORTime2 = 0.14, 95%CI = 0.08,0.24), tobacco (aORTime1 = 15.13, 95%CI = 6.78,33.74; aORTime2 = 12.39, 95%CI = 4.97,30.91), and consumable hemp licenses (aORTime1 = 21.85, 95%CI = 7.91,60.39; aORTime2 = 22.93, 95%CI = 6.92,75.98) were associated with Delta-8 THC retail availability; ADI scores were borderline but not statistically significant. The multiplicative interaction at Time 2 indicated locations with both high ADI scores and alcohol retail licenses had higher odds of selling Delta-8 THC. Differential associations between ADI and Delta-8 THC availability were observed based on those with (b = 0.007) or without (b = -0.023) alcohol retail licenses. Conclusions: Both timepoints had similar proportions of Delta-8 THC retailers, indicating that despite the uncertain legal landscape in Texas, interest in Delta-8 did not appear to be declining. Geographic socioeconomic disparities were observed among locations with alcohol retail licenses. Future regulations may include minimum distances from specific locations (e.g., schools), particularly in more disadvantaged areas. Increasing the compliance of Texas Delta-8 THC retailers to have the required hemp license is important for surveillance and product safety.


Assuntos
Cannabis , Alucinógenos , Humanos , Texas , Marketing , Etanol , Dronabinol
2.
Anaesthesia ; 78(4): 432-441, 2023 04.
Artigo em Inglês | MEDLINE | ID: mdl-36639918

RESUMO

Identifying factors associated with persistent pain after breast cancer surgery may facilitate risk stratification and individualised management. Single-population studies have limited generalisability as socio-economic and genetic factors contribute to persistent pain development. Therefore, this prospective multicentre cohort study aimed to develop a predictive model from a sample of Asian and American women. We enrolled women undergoing elective breast cancer surgery at KK Women's and Children's Hospital and Duke University Medical Center. Pre-operative patient and clinical characteristics and EQ-5D-3L health status were recorded. Pain catastrophising scale; central sensitisation inventory; coping strategies questionnaire-revised; brief symptom inventory-18; perceived stress scale; mechanical temporal summation; and pressure-pain threshold assessments were performed. Persistent pain was defined as pain score ≥ 3 or pain affecting activities of daily living 4 months after surgery. Univariate associations were generated using generalised estimating equations. Enrolment site was forced into the multivariable model, and risk factors with p < 0.2 in univariate analyses were considered for backwards selection. Of 210 patients, 135 (64.3%) developed persistent pain. The multivariable model attained AUC = 0.807, with five independent associations: age (OR 0.85 95%CI 0.74-0.98 per 5 years); diabetes (OR 4.68, 95%CI 1.03-21.22); pre-operative pain score at sites other than the breast (OR 1.48, 95%CI 1.11-1.96); previous mastitis (OR 4.90, 95%CI 1.31-18.34); and perceived stress scale (OR 1.35, 95%CI 1.01-1.80 per 5 points), after adjusting for: enrolment site; pre-operative pain score at the breast; pre-operative overall pain score at rest; postoperative non-steroidal anti-inflammatory drug use; and pain catastrophising scale. Future research should validate this model and evaluate pre-emptive interventions to reduce persistent pain risk.


Assuntos
Neoplasias da Mama , Criança , Humanos , Feminino , Pré-Escolar , Neoplasias da Mama/cirurgia , Estudos Prospectivos , Estudos de Coortes , Atividades Cotidianas , Dor , Fatores de Risco , Dor Pós-Operatória/epidemiologia , Dor Pós-Operatória/etiologia , Dor Pós-Operatória/diagnóstico
3.
Osteoporos Int ; 33(3): 725-735, 2022 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-34643755

RESUMO

Decreased cortical bone density and bone strength at peak height velocity (PHV) were noted in girls with adolescent idiopathic scoliosis (AIS). These findings could provide the link to the previously reported observation that low bone mineral density (BMD) could contribute as one of the prognostic factors for curve progression that mostly occurs during PHV in AIS. INTRODUCTION: As part of the studies related to aetiopathogenesis of AIS, we assessed bone qualities, bone mechanical strength and bone turnover markers (BTMs) focusing at the peri-pubertal period and PHV in AIS girls. METHODS: 396 AIS girls in two separate cohorts were studied. Skeletal maturity was assessed using the validated thumb ossification composite index (TOCI). Bone qualities and strength were evaluated with high-resolution peripheral quantitative computed tomography (HR-pQCT) and finite element analysis (FEA). RESULTS: Cohort-A included 179 girls (11.95 ± 0.95 years old). Girls at TOCI-4 had numerically the highest height velocity (0.71 ± 0.24 cm/month) corresponding to the PHV. Subjects at TOCI-4 had lower cortical volumetric BMD (672.36 ± 39.07 mg/mm3), cortical thickness (0.68 ± 0.08 mm) and apparent modulus (1601.54 ± 243.75 N/mm2) than: (a) those at TOCI-1-3 (724.99 ± 32.09 mg/mm3 (p < 0.001), 0.79 ± 0.11 mm (p < 0.001) and 1910.88 ± 374.75 N/mm2 (p < 0.001), respectively) and (b) those at TOCI-8 (732.28 ± 53.75 mg/mm3 (p < 0.001), 0.84 ± 0.14 mm (p < 0.001), 1889.11 ± 419.37 N/mm2 (p < 0.001), respectively). Cohort-B included 217 girls (12.22 ± 0.89 years old). Subjects at TOCI-4 had higher levels of C-terminal telopeptide of type 1 collagen (1524.70 ± 271.10 pg/L) and procollagen type 1 N-terminal propeptide (941.12 ± 161.39 µg/L) than those at TOCI-8 (845.71 ± 478.55 pg/L (p < 0.001) and 370.08 ± 197.04 µg/L (p < 0.001), respectively). CONCLUSION: AIS girls had decreased cortical bone density and bone mechanical strength with elevated BTMs at PHV. Coupling of PHV with decreased cortical and FEA parameters could provide the link to the previously reported observation that low BMD could contribute as one of the prognostic factors for curve progression that mostly occurs during PHV in AIS.


Assuntos
Escoliose , Adolescente , Densidade Óssea , Remodelação Óssea , Criança , Osso Cortical , Estudos Transversais , Feminino , Humanos , Estudos Longitudinais , Escoliose/diagnóstico por imagem
4.
Osteoporos Int ; 32(7): 1287-1300, 2021 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-33704541

RESUMO

The association between the risk of fractures and suboptimal vitamin D (Vit-D) status remains controversial in children. This meta-analysis suggested that serum 25(OH)Vit-D levels were lower in pediatric cases with fractures. 25-hydroxyvitamin D (25(OH)Vit-D) levels less than 50 nmol/L were associated with increased fracture risk in children. INTRODUCTION: This study aimed to assess the association between serum 25(OH)Vit-D and the risk of fractures in children, and to explore the sources of heterogeneity and investigate their impact on results. METHODS: Systematic review and meta-analysis were conducted for observational studies comparing serum 25(OH)Vit-D levels between fracture and non-fracture pediatric cases. The quality of the included studies was assessed using the Newcastle-Ottawa Scale (NOS). RESULTS: Analysis on 17 case-control and 6 cross-sectional studies (2929 fracture cases and 5000 controls) suggested that 25(OH)Vit-D was lower in fracture cases than in controls (pooled mean difference (MD) = - 3.51 nmol/L; 95% confidence interval (CI): - 5.60 to - 1.42) with a heterogeneity (I2) of 73.9%. The sensitivity analysis which merged the case-control studies that had a NOS score ≥ 4 showed a pooled MD of - 4.35 nmol/L (95% CI: - 6.64 to - 2.06) with a heterogeneity (I2) of 35.9%. Pooled odds ratio of fracture in subjects with 25(OH)Vit-D ≤ 50 nmol/L compared to subjects with 25(OH)Vit-D > 50 nmol/L was 1.29 (95% CI: 1.10 to 1.53; I2 < 1%). CONCLUSION: This study indicated that serum 25(OH)Vit-D levels were lower in pediatric patients with fractures. 25(OH)Vit-D ≤ 50 nmol/L was associated with increased fracture risk in children.


Assuntos
Fraturas Ósseas , Deficiência de Vitamina D , Estudos de Casos e Controles , Criança , Estudos Transversais , Fraturas Ósseas/epidemiologia , Fraturas Ósseas/etiologia , Humanos , Vitamina D , Deficiência de Vitamina D/complicações , Deficiência de Vitamina D/epidemiologia , Vitaminas
5.
Respir Res ; 22(1): 157, 2021 May 21.
Artigo em Inglês | MEDLINE | ID: mdl-34020644

RESUMO

BACKGROUND: The long-term consequences of COVID-19 remain unclear. There is concern a proportion of patients will progress to develop pulmonary fibrosis. We aimed to assess the temporal change in CXR infiltrates in a cohort of patients following hospitalisation for COVID-19. METHODS: We conducted a single-centre prospective cohort study of patients admitted to University Hospital Southampton with confirmed SARS-CoV2 infection between 20th March and 3rd June 2020. Patients were approached for standard-of-care follow-up 12-weeks after hospitalisation. Inpatient and follow-up CXRs were scored by the assessing clinician for extent of pulmonary infiltrates; 0-4 per lung (Nil = 0, < 25% = 1, 25-50% = 2, 51-75% = 3, > 75% = 4). RESULTS: 101 patients with paired CXRs were included. Demographics: 53% male with a median (IQR) age 53.0 (45-63) years and length of stay 9 (5-17.5) days. The median CXR follow-up interval was 82 (77-86) days with median baseline and follow-up CXR scores of 4.0 (3-5) and 0.0 (0-1) respectively. 32% of patients had persistent CXR abnormality at 12-weeks. In multivariate analysis length of stay (LOS), smoking-status and obesity were identified as independent risk factors for persistent CXR abnormality. Serum LDH was significantly higher at baseline and at follow-up in patients with CXR abnormalities compared to those with resolution. A 5-point composite risk score (1-point each; LOS ≥ 15 days, Level 2/3 admission, LDH > 750 U/L, obesity and smoking-status) strongly predicted risk of persistent radiograph abnormality (0.81). CONCLUSION: Persistent CXR abnormality 12-weeks post COVID-19 was common in this cohort. LOS, obesity, increased serum LDH, and smoking-status were risk factors for radiograph abnormality. These findings require further prospective validation.


Assuntos
COVID-19/complicações , COVID-19/diagnóstico por imagem , Tórax/diagnóstico por imagem , Idoso , Estudos de Coortes , Feminino , Seguimentos , Hospitalização , Humanos , L-Lactato Desidrogenase/sangue , Tempo de Internação , Masculino , Pessoa de Meia-Idade , Obesidade , Reação em Cadeia da Polimerase , Estudos Prospectivos , Radiografia Torácica , Fatores de Risco , Fumar , Resultado do Tratamento
6.
BMC Public Health ; 21(1): 307, 2021 02 06.
Artigo em Inglês | MEDLINE | ID: mdl-33549071

RESUMO

BACKGROUND: Polytobacco product use is increasingly popular, but little is known about the prevalence, trend, and factors of such use particularly in non-western countries. METHOD: A representative sample of 1139 current cigarette smokers aged 15+ (84.1% male) were telephone interviewed in Tobacco Control Policy-related Surveys in 2015-2017. Information collected included poly-tobacco use (PTU), smoking and socio-demographic characteristics. Associations of current PTU with related factors were analyzed using logistic regression with adjustment for confounders. Prevalence was weighted by age and sex of current cigarette users in the general population. RESULTS: Eighty-four point one percent (95% CI 81.4-86.6%) were exclusive cigarette smokers. Fifteen point nine percent (13.4-18.6%) were current polytobacco product users, 12.3% (10.2-14.8%) used one tobacco product and 2.52% (1.59-3.97%) used two tobacco products in addition to cigarette. Cigarette use with cigar was more common (6.28%, 4.75-8.27%), and the least used product with cigarette was e-cigarette (1.05%, 0.44-2.50%). The changes in overall prevalence of PTU by number of products use varied in 3 years. Current PTU was associated with being male (AOR 2.01, 95% CI 1.12-3.61), younger age (AORs range from 1.34-4.65, P for trend < .001) and less ready to quit (2.08, 1.09-3.97). CONCLUSIONS: Prevalence of PTU increased slowly by year, one tobacco product use with cigarette was more common. The most used tobacco product with cigarette was cigar. Being male, younger and less ready to quit were associated with current PTU.


Assuntos
Sistemas Eletrônicos de Liberação de Nicotina , Produtos do Tabaco , Adolescente , China/epidemiologia , Feminino , Hong Kong/epidemiologia , Humanos , Masculino , Fumantes , Uso de Tabaco/epidemiologia
7.
Mol Carcinog ; 59(2): 227-236, 2020 02.
Artigo em Inglês | MEDLINE | ID: mdl-31820492

RESUMO

Colorectal cancer (CRC) is associated with significant morbidity and mortality in the US and worldwide. CRC is the second most common cancer-related death in both men and women globally. Chronic inflammation has been identified as one of the major risk factors of CRC. It may drive genetic and epigenetic/epigenomic alterations, such as DNA methylation, histone modification, and non-coding RNA regulation. Current prevention modalities for CRC are limited and some treatment regimens such as use the nonsteroidal anti-inflammatory drug aspirin may have severe side effects, namely gastrointestinal ulceration and bleeding. Therefore, there is an urgent need of developing alternative strategies. Recently, increasing evidence suggests that several dietary cancer chemopreventive phytochemicals possess anti-inflammation and antioxidative stress activities, and may prevent cancers including CRC. Curcumin (CUR) is the yellow pigment that is found in the rhizomes of turmeric (Curcuma longa). Many studies have demonstrated that CUR exhibit strong anticancer, antioxidative stress, and anti-inflammatory activities by regulating signaling pathways, such as nuclear factor erythroid-2-related factor 2, nuclear factor-κB, and epigenetics/epigenomics pathways of histones modifications, and DNA methylation. In this review, we will discuss the latest evidence in epigenetics/epigenomics alterations by CUR in CRC and their potential contribution in the prevention of CRC.


Assuntos
Neoplasias do Colo/prevenção & controle , Curcumina/farmacologia , Epigênese Genética/efeitos dos fármacos , Epigenômica , Inflamação/prevenção & controle , Antineoplásicos/farmacologia , Neoplasias do Colo/genética , Neoplasias do Colo/patologia , Curcuma/química , Humanos , Inflamação/genética , Inflamação/patologia , Estadiamento de Neoplasias , Fitoterapia/métodos
8.
Diabet Med ; 37(8): 1234-1243, 2020 08.
Artigo em Inglês | MEDLINE | ID: mdl-32510624

RESUMO

The prevalence and incidence of young-onset diabetes are increasing in many parts of the world, with the most rapid increase occurring in Asia, where one in five people with diabetes are diagnosed below the age of 40 years. Accumulation of glycaemic burden from an early age significantly increases the lifetime risks of developing complications from diabetes. Despite impending health threats, young people fare worse in the control of blood glucose and other metabolic risk factors. Challenges in the management of young-onset diabetes are compounded by heterogeneity of the underlying causes, pathophysiology and clinical phenotypes in this group. Effective characterization of people with diabetes has implications in steering the choice of glucose-lowering drugs, which, in turn, determines the clinical outcome. Medical nutritional therapy is key to effective management of people with diabetes but dietary adherence is often suboptimal among younger individuals. A recently published consensus report on nutritional therapy addresses dietary management in people with prediabetes as well as diabetes, and summarizes clinical evidence regarding macronutrient and micronutrient composition as well as eating patterns in people with diabetes. For people with type 1 diabetes, automated insulin delivery systems have rapidly evolved since the concept was first introduced at the National Institute of Health and the Juvenile Diabetes Research Foundation in 2005. The subsequent development of a type 1 diabetes simulator, developed using detailed human physiology data on carbohydrate metabolism replaced the need for pre-clinical animal studies and facilitated the seamless progression to artificial pancreas human clinical trials.


Assuntos
Diabetes Mellitus Tipo 1/terapia , Diabetes Mellitus Tipo 2/terapia , Hipoglicemiantes/administração & dosagem , Sistemas de Infusão de Insulina , Insulina/administração & dosagem , Terapia Nutricional , Idade de Início , Automonitorização da Glicemia , Humanos , Bombas de Infusão Implantáveis , Diabetes Autoimune Latente em Adultos/terapia , Monitorização Ambulatorial , Pâncreas Artificial
9.
Cost Eff Resour Alloc ; 17: 13, 2019.
Artigo em Inglês | MEDLINE | ID: mdl-31303866

RESUMO

BACKGROUND: International guidelines recommend using basal insulin in patients with type-2 diabetes mellitus if glycaemic target cannot be attained on non-insulin anti-diabetic drugs. Available choices of basal insulin include intermediate-acting neutral protamine Hagedorn (NPH) insulin and long-acting insulin analogues like insulin glargine U100. Despite clear advantages of glargine U100, the existing practice in Hong Kong still favours NPH insulin due to lower immediate drug costs. OBJECTIVES: The objective of this study was to assess the cost-effectiveness of insulin glargine U100 compared to NPH insulin in patients with type-2 diabetes uncontrolled with non-insulin anti-diabetic agents alone in Hong Kong. METHODS: The IQVIA™ Core Diabetes Model (CDM) v9.0 was used to conduct the cost-effectiveness analysis of glargine U100 versus NPH. Baseline characteristics were collected from the Hong Kong Diabetes Registry. Efficacy rates were extracted from a published study comparing glargine U100 and NPH in Asia, utilities from published literature, and costs constructed using the Hong Kong Hospital Authority (HA) Gazette (public healthcare setting). The primary outcome was an incremental cost-effectiveness ratio (ICER). RESULTS: Insulin glargine U100 resulted in an ICER of HKD 98,663 per Quality Adjusted Life Year (QALY) gained. The incremental gains in QALY and costs were 0.217 years and HKD 21,360 respectively. Results from scenario and probabilistic sensitivity analyses were consistent with that from base case analysis. CONCLUSION: Insulin glargine U100 is a cost-effective treatment for patients with type 2 diabetes compared to NPH insulin in setting in Hong Kong. This was mainly driven by the significantly lower rates of hypoglycaemia of insulin glargine U100 than NPH insulin.

10.
Angiogenesis ; 21(3): 581-597, 2018 08.
Artigo em Inglês | MEDLINE | ID: mdl-29582235

RESUMO

BACKGROUND: The liver sinusoidal capillaries play a pivotal role in liver regeneration, suggesting they may be beneficial in liver bioengineering. This study isolated mouse liver sinusoidal endothelial cells (LSECs) and determined their ability to form capillary networks in vitro and in vivo for liver tissue engineering purposes. METHODS AND RESULTS: In vitro LSECs were isolated from adult C57BL/6 mouse livers. Immunofluorescence labelling indicated they were LYVE-1+/CD32b+/FactorVIII+/CD31-. Scanning electron microscopy of LSECs revealed the presence of characteristic sieve plates at 2 days. LSECs formed tubes and sprouts in the tubulogenesis assay, similar to human microvascular endothelial cells (HMEC); and formed capillaries with lumens when implanted in a porous collagen scaffold in vitro. LSECs were able to form spheroids, and in the spheroid gel sandwich assay produced significantly increased numbers (p = 0.0011) of capillary-like sprouts at 24 h compared to HMEC spheroids. Supernatant from LSEC spheroids demonstrated significantly greater levels of vascular endothelial growth factor-A and C (VEGF-A, VEGF-C) and hepatocyte growth factor (HGF) compared to LSEC monolayers (p = 0.0167; p = 0.0017; and p < 0.0001, respectively), at 2 days, which was maintained to 4 days for HGF (p = 0.0017) and VEGF-A (p = 0.0051). In vivo isolated mouse LSECs were prepared as single cell suspensions of 500,000 cells, or as spheroids of 5000 cells (100 spheroids) and implanted in SCID mouse bilateral vascularized tissue engineering chambers for 2 weeks. Immunohistochemistry identified implanted LSECs forming LYVE-1+/CD31- vessels. In LSEC implanted constructs, overall lymphatic vessel growth was increased (not significantly), whilst host-derived CD31+ blood vessel growth increased significantly (p = 0.0127) compared to non-implanted controls. LSEC labelled with the fluorescent tag DiI prior to implantation formed capillaries in vivo and maintained LYVE-1 and CD32b markers to 2 weeks. CONCLUSION: Isolated mouse LSECs express a panel of vascular-related cell markers and demonstrate substantial vascular capillary-forming ability in vitro and in vivo. Their production of liver growth factors VEGF-A, VEGF-C and HGF enable these cells to exert a growth stimulus post-transplantation on the in vivo host-derived capillary bed, reinforcing their pro-regenerative capabilities for liver tissue engineering studies.


Assuntos
Capilares/crescimento & desenvolvimento , Células Endoteliais/metabolismo , Fígado/irrigação sanguínea , Engenharia Tecidual , Animais , Capilares/ultraestrutura , Colágeno/metabolismo , Células Endoteliais/ultraestrutura , Fator de Crescimento de Hepatócito/metabolismo , Imuno-Histoquímica , Fígado/crescimento & desenvolvimento , Fígado/metabolismo , Fígado/ultraestrutura , Vasos Linfáticos/metabolismo , Camundongos , Microscopia Eletrônica/métodos , Esferoides Celulares/metabolismo , Esferoides Celulares/ultraestrutura , Alicerces Teciduais , Fator A de Crescimento do Endotélio Vascular/metabolismo , Fator C de Crescimento do Endotélio Vascular/metabolismo
11.
Ann Oncol ; 29(12): 2313-2327, 2018 12 01.
Artigo em Inglês | MEDLINE | ID: mdl-30307465

RESUMO

The molecular landscape of squamous cell carcinoma of the head and the neck (SCCHN) has been characterized and actionable or targetable genomic alterations have been identified. However, targeted therapies have very limited activity in unselected SCCHN, and the current treatment strategy is still based on tumor location and disease stage and not on tumor biology. Trying to select upfront the patients who will benefit from a specific treatment might be a way to improve patients' outcome. With the objective of optimizing the activity of targeted therapies and immunotherapy, we have designed an umbrella biomarker-driven study dedicated to recurrent and/or metastatic SCCHN patients (EORTC-1559-HNCG, NCT03088059). In this article, we review not only the different trial designs for biomarker-driven studies with their respective advantages and opportunities but also the potential pitfalls that led to the design of the EORTC-1559-HNCG protocol. We also discuss the scientific and logistic challenges of biomarker-driven trials.


Assuntos
Antineoplásicos/uso terapêutico , Biomarcadores Tumorais/genética , Neoplasias de Cabeça e Pescoço/tratamento farmacológico , Recidiva Local de Neoplasia/tratamento farmacológico , Carcinoma de Células Escamosas de Cabeça e Pescoço/tratamento farmacológico , Antineoplásicos/farmacologia , Biomarcadores Tumorais/antagonistas & inibidores , Biomarcadores Tumorais/metabolismo , Biópsia , Ensaios Clínicos como Assunto , Intervalo Livre de Doença , Europa (Continente) , Neoplasias de Cabeça e Pescoço/genética , Neoplasias de Cabeça e Pescoço/mortalidade , Neoplasias de Cabeça e Pescoço/patologia , Humanos , Terapia de Alvo Molecular/métodos , Recidiva Local de Neoplasia/genética , Recidiva Local de Neoplasia/mortalidade , Recidiva Local de Neoplasia/patologia , Seleção de Pacientes , Medicina de Precisão/métodos , Intervalo Livre de Progressão , Projetos de Pesquisa , Carcinoma de Células Escamosas de Cabeça e Pescoço/genética , Carcinoma de Células Escamosas de Cabeça e Pescoço/mortalidade , Carcinoma de Células Escamosas de Cabeça e Pescoço/patologia
12.
Breast Cancer Res Treat ; 168(2): 357-364, 2018 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-29198055

RESUMO

PURPOSE: A Phase Ib study in patients with trastuzumab-resistant, human epidermal growth factor receptor-2- (HER2)-positive advanced breast cancer defined the recommended Phase II dose of buparlisib as 100 mg/day in combination with 2 mg/kg weekly trastuzumab, and reported preliminary signs of clinical activity. Here we present results from the Phase II portion. METHODS: Patients with trastuzumab-resistant, HER2-positive advanced breast cancer received buparlisib plus trastuzumab. Study endpoints included safety/tolerability and antitumour activity. The study was extended to include a Phase Ib dose-escalation phase, in which patients with progressive brain metastases also received capecitabine. RESULTS: In the Phase II portion, of 50 patients treated with buparlisib and trastuzumab, the most common (≥ 30%) all-grade adverse events (AEs) were diarrhoea (54%), nausea (48%), decreased appetite, increased alanine aminotransferase (36% each), increased aspartate aminotransferase (34%), fatigue, rash (32% each), cough and hyperglycemia (30% each). One (2%) patient achieved complete response and four (8%) patients had confirmed partial responses [PR; including two patients with phosphatidylinositol 3-kinase (PI3 K) pathway-activated tumours]. Overall response rate (ORR) was 10%: the primary endpoint (ORR ≥ 25%) was therefore not met. In the Phase Ib portion, all patients with measurable brain lesions at baseline showed tumour shrinkage to some degree; due to low enrollment, maximum tolerated dose of buparlisib in combination with trastuzumab and capecitabine was not determined. CONCLUSION: Buparlisib plus trastuzumab, as a chemotherapy-free regimen, demonstrated an acceptable safety profile but limited efficacy in patients with heavily pretreated, trastuzumab-resistant HER2-positive breast cancer, and in patients with progressive brain metastases also receiving capecitabine.


Assuntos
Aminopiridinas/efeitos adversos , Protocolos de Quimioterapia Combinada Antineoplásica/efeitos adversos , Neoplasias Encefálicas/tratamento farmacológico , Neoplasias da Mama/tratamento farmacológico , Morfolinas/efeitos adversos , Trastuzumab/efeitos adversos , Adulto , Idoso , Aminopiridinas/administração & dosagem , Protocolos de Quimioterapia Combinada Antineoplásica/administração & dosagem , Biomarcadores Tumorais/análise , Neoplasias Encefálicas/secundário , Neoplasias da Mama/patologia , Capecitabina/administração & dosagem , Capecitabina/efeitos adversos , Progressão da Doença , Resistencia a Medicamentos Antineoplásicos/efeitos dos fármacos , Feminino , Humanos , Dose Máxima Tolerável , Pessoa de Meia-Idade , Morfolinas/administração & dosagem , Receptor ErbB-2/metabolismo , Critérios de Avaliação de Resposta em Tumores Sólidos , Trastuzumab/administração & dosagem
13.
Hong Kong Med J ; 24(4): 408-415, 2018 08.
Artigo em Inglês | MEDLINE | ID: mdl-30100583

RESUMO

In 2016, meetings of groups of physicians and paediatricians with a special interest in lipid disorders and familial hypercholesterolaemia were held to discuss several domains of management of familial hypercholesterolaemia in adults and children in Hong Kong. After reviewing the evidence and guidelines for the diagnosis, screening, and management of familial hypercholesterolaemia, consensus was reached on the following aspects: clinical features, diagnostic criteria, screening in adults, screening in children, management in relation to target plasma low-density lipoprotein cholesterol levels, detection of atherosclerosis, lifestyle and behaviour modification, and pharmacotherapy.


Assuntos
Anticolesterolemiantes/uso terapêutico , Hiperlipoproteinemia Tipo II/diagnóstico , Hiperlipoproteinemia Tipo II/tratamento farmacológico , Adulto , Doenças Cardiovasculares/prevenção & controle , Criança , Consenso , Gerenciamento Clínico , Humanos , Guias de Prática Clínica como Assunto
14.
Diabet Med ; 34(12): 1701-1709, 2017 12.
Artigo em Inglês | MEDLINE | ID: mdl-28945282

RESUMO

AIM: Family history of diabetes is an established risk factor for Type 2 diabetes, but the impact of a family history of young-onset diabetes (onset < 40 years) on future risk of diabetes among first-degree relatives is unclear. In this prospective study, we examined the influence of family history of late- versus young-onset diabetes on the development of diabetes in a young to middle-aged Chinese population. METHODS: Some 365 siblings identified through probands with Type 2 diabetes and 452 participants from a community-based health awareness project (aged 18-55 years) who underwent metabolic assessment during the period 1998-2002 were followed to 2012-2013 to determine their glycaemic status. Multivariate logistic regression was performed to investigate the association of family history of diabetes presented at different age categories with development of diabetes. RESULTS: In this cohort, 53.4% (n = 167) of participants with a family history of young-onset diabetes, 30.1% (n = 68) of those with a family history of late-onset diabetes and 14.4% (n = 40) of those without a family history developed diabetes. Using logistic regression, family history of diabetes presented at ages ≥ 50, 40-49, 30-39 and < 30 years, increased conversion to diabetes with respective odds ratios of 2.4, 5.8, 9.4 and 7.0 (P < 0.001 for all), after adjustment for socio-economic status, smoking, obesity, hypertension and dyslipidaemia. Among participants without diabetes at baseline, risk association of family history of late-onset diabetes with incident diabetes was not sustained, whereas that of family history of young-onset diabetes remained robust on further adjustment for baseline glycaemic measurements. CONCLUSIONS: First-degree relatives of people with Type 2 diabetes, especially relatives of those with young-onset diabetes, are at high risk for diabetes.


Assuntos
Diabetes Mellitus Tipo 2/epidemiologia , Família , Estado Pré-Diabético/epidemiologia , Adolescente , Adulto , Idade de Início , Progressão da Doença , Feminino , Seguimentos , Humanos , Masculino , Pessoa de Meia-Idade , Estado Pré-Diabético/patologia , Fatores de Risco , Adulto Jovem
15.
Diabet Med ; 34(3): 440-450, 2017 03.
Artigo em Inglês | MEDLINE | ID: mdl-27278933

RESUMO

AIMS: To test the hypothesis that delivery of integrated care augmented by a web-based disease management programme and nurse coordinator would improve treatment target attainment and health-related behaviour. METHODS: The web-based Joint Asia Diabetes Evaluation (JADE) and Diabetes Monitoring Database (DIAMOND) portals contain identical built-in protocols to integrate structured assessment, risk stratification, personalized reporting and decision support. The JADE portal contains an additional module to facilitate structured follow-up visits. Between January 2009 and September 2010, 3586 Chinese patients with Type 2 diabetes from six sites in China were randomized to DIAMOND (n = 1728) or JADE, plus nurse-coordinated follow-up visits (n = 1858) with comprehensive assessments at baseline and 12 months. The primary outcome was proportion of patients achieving ≥ 2 treatment targets (HbA1c < 53 mmol/mol (7%), blood pressure < 130/80 mmHg and LDL cholesterol < 2.6 mmol/l). RESULTS: Of 3586 participants enrolled (mean age 57 years, 54% men, median disease duration 5 years), 2559 returned for repeat assessment after a median (interquartile range) follow-up of 12.5 (4.6) months. The proportion of participants attaining ≥ 2 treatment targets increased in both groups (JADE 40.6 to 50.0%; DIAMOND 38.2 to 50.8%) and there were similar absolute reductions in HbA1c [DIAMOND -8 mmol/mol vs JADE -7 mmol/mol (-0.69 vs -0.62%)] and LDL cholesterol (DIAMOND -0.32 mmol/l vs JADE -0.28 mmol/l), with no between-group difference. The JADE group was more likely to self-monitor blood glucose (50.5 vs 44.2%; P = 0.005) and had fewer defaulters (25.6 vs 32.0%; P < 0.001). CONCLUSIONS: Integrated care augmented by information technology improved cardiometabolic control, with additional nurse contacts reducing the default rate and enhancing self-care. (Clinical trials registry no.: NCT01274364).


Assuntos
Prestação Integrada de Cuidados de Saúde , Complicações do Diabetes/prevenção & controle , Diabetes Mellitus Tipo 2/terapia , Gerenciamento Clínico , Cooperação do Paciente , Melhoria de Qualidade , Qualidade da Assistência à Saúde , Idoso , Automonitorização da Glicemia , Pressão Sanguínea , China/epidemiologia , LDL-Colesterol/sangue , Terapia Combinada/enfermagem , Países em Desenvolvimento , Complicações do Diabetes/epidemiologia , Complicações do Diabetes/enfermagem , Diabetes Mellitus Tipo 2/sangue , Diabetes Mellitus Tipo 2/complicações , Diabetes Mellitus Tipo 2/enfermagem , Feminino , Seguimentos , Hemoglobinas Glicadas/análise , Humanos , Internet , Masculino , Pessoa de Meia-Idade , Fatores de Risco
16.
Transgenic Res ; 26(2): 237-246, 2017 04.
Artigo em Inglês | MEDLINE | ID: mdl-27873161

RESUMO

In spite of the emergence of genome editing tools, ES cell mediated transgenesis remains the most controllable way of creating genetically modified animals. Although tetraploid (4N) complementation of 4N host embryos and ES cells, is the only method guaranteeing that offspring are entirely ES cell derived, this technique is challenging, not always successful and difficult to implement in some laboratory settings. The current study shows that pretreatment of host blastocysts with FGF4 prior to ES cell injection can provide an alternative method for the generation of animals displaying high rates of chimaerism. Chimaerism assessment in E11 fetuses and born pups shows that a large percentage of resulting conceptuses show a high ES cell contribution from implantation onwards and that developing pups do not necessitate c-section for delivery.


Assuntos
Animais Geneticamente Modificados/genética , Desenvolvimento Embrionário/genética , Células-Tronco Embrionárias , Fator 4 de Crescimento de Fibroblastos/genética , Animais , Animais Geneticamente Modificados/crescimento & desenvolvimento , Blastocisto/metabolismo , Quimera/genética , Quimera/crescimento & desenvolvimento , Clonagem de Organismos , Fator 4 de Crescimento de Fibroblastos/metabolismo , Edição de Genes/métodos , Técnicas de Transferência de Genes , Camundongos
18.
Br J Surg ; 103(11): 1476-86, 2016 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-27511444

RESUMO

BACKGROUND: Radiofrequency ablation (RFA) is an emerging treatment for primary aldosteronism owing to aldosterone-producing adenoma. Whether RFA could be an alternative treatment to laparoscopic adrenalectomy is unknown. METHODS: This was a retrospective comparative study in patients with aldosterone-producing adenoma undergoing either laparoscopic adrenalectomy or CT-guided percutaneous RFA between 2004 and 2012. Short-term outcomes and long-term resolution rates of primary aldosteronism (normalized aldosterone to renin ratio), hypokalaemia and hypertension (BP lower than 140/90 mmHg without antihypertensive medical therapy) were evaluated. RESULTS: Some 63 patients were included, 27 in the laparoscopic adrenalectomy group and 36 in the RFA group. RFA was associated with shorter duration of operation (median 12 versus 124 min; P < 0·001), shorter hospital stay (2 versus 4 days; P < 0·001), lower analgesic requirements (13 of 36 versus 23 of 27 patients; P < 0·001) and earlier resumption of work (median 4 versus 14 days; P = 0·006). Morbidity rates were similar in the two groups. With median follow-up of 5·7 (range 1·9-10·6) years, resolution of primary aldosteronism was seen in 33 of 36 patients treated with RFA and all 27 patients who had laparoscopic adrenalectomy (P = 0·180). Hypertension was resolved less frequently after treatment with RFA compared with laparoscopic adrenalectomy (13 of 36 versus 19 of 27 patients; P = 0·007). Hypokalaemia was resolved in all patients. CONCLUSION: For patients with aldosterone-producing adenoma the efficacy of resolution of primary aldosteronism and hypertension was inferior after treatment with RFA compared with laparoscopic adrenalectomy.


Assuntos
Adenoma/cirurgia , Neoplasias das Glândulas Suprarrenais/cirurgia , Adrenalectomia/métodos , Laparoscopia/métodos , Terapia a Laser/métodos , Adenoma/diagnóstico , Adenoma/metabolismo , Adolescente , Neoplasias das Glândulas Suprarrenais/diagnóstico , Neoplasias das Glândulas Suprarrenais/metabolismo , Adulto , Assistência ao Convalescente , Idoso , Idoso de 80 Anos ou mais , Aldosterona/metabolismo , Feminino , Humanos , Hiperaldosteronismo/diagnóstico , Hiperaldosteronismo/cirurgia , Hipertensão/etiologia , Hipertensão/cirurgia , Tempo de Internação/estatística & dados numéricos , Imageamento por Ressonância Magnética , Masculino , Pessoa de Meia-Idade , Duração da Cirurgia , Complicações Pós-Operatórias/etiologia , Estudos Retrospectivos , Tomografia Computadorizada por Raios X , Resultado do Tratamento , Adulto Jovem
19.
Diabet Med ; 33(9): 1230-9, 2016 09.
Artigo em Inglês | MEDLINE | ID: mdl-26511783

RESUMO

AIMS: Diabetic kidney disease independently predicts cardiovascular disease and premature death. We examined the burden of chronic kidney disease (CKD, defined as an estimated GFR < 60 ml/min/1.73 m(2) ) and quality of care in a cross-sectional survey of adults (age ≥ 18 years) with Type 2 diabetes across Asia. METHODS: The Joint Asia Diabetes Evaluation programme is a disease-management programme implemented using an electronic portal that systematically captures clinical characteristics of all patients enrolled. Between July 2007 and December 2012, data on 28 110 consecutively enrolled patients (China: 3415, Hong Kong: 15 196, India: 3714, Korea: 1651, Philippines: 3364, Vietnam: 692, Taiwan: 78) were analysed. RESULTS: In this survey, 15.9% of patients had CKD, 25.0% had microalbuminuria and 12.5% had macroalbuminuria. Patients with CKD were less likely to achieve HbA1c < 53 mmol/mol (7.0%) (36.0% vs. 42.3%) and blood pressure < 130/80 mmHg (20.8% vs. 35.3%), and were more likely to have retinopathy (26.2% vs. 8.7%), sensory neuropathy (29.0% vs. 7.7%), cardiovascular disease (26.6% vs. 8.7%) and self-reported hypoglycaemia (18.9% vs. 8.2%). Despite high frequencies of albuminuria (74.8%) and dyslipidaemia (93.0%) among CKD patients, only 49.0% were using renin-angiotensin system inhibitors and 53.6% were on statins. On logistic regression, old age, male gender, tobacco use, long disease duration, high HbA1c , blood pressure and BMI, and low LDL cholesterol were independently associated with CKD (all P < 0.05). CONCLUSIONS: The poor control of risk factors, suboptimal use of organ-protective drugs and high frequencies of hypoglycaemia highlight major treatment gaps in patients with diabetic kidney disease in Asia.


Assuntos
Diabetes Mellitus Tipo 2/epidemiologia , Nefropatias Diabéticas/epidemiologia , Sistema de Registros , Insuficiência Renal Crônica/epidemiologia , Fatores Etários , Idoso , Albuminúria/epidemiologia , Albuminúria/metabolismo , Antagonistas de Receptores de Angiotensina/uso terapêutico , Inibidores da Enzima Conversora de Angiotensina/uso terapêutico , Ásia/epidemiologia , Doenças Cardiovasculares/tratamento farmacológico , Doenças Cardiovasculares/epidemiologia , China/epidemiologia , Estudos Transversais , Diabetes Mellitus Tipo 2/complicações , Diabetes Mellitus Tipo 2/tratamento farmacológico , Diabetes Mellitus Tipo 2/metabolismo , Nefropatias Diabéticas/tratamento farmacológico , Nefropatias Diabéticas/etiologia , Nefropatias Diabéticas/metabolismo , Neuropatias Diabéticas/epidemiologia , Neuropatias Diabéticas/etiologia , Retinopatia Diabética/epidemiologia , Retinopatia Diabética/etiologia , Dislipidemias/tratamento farmacológico , Dislipidemias/epidemiologia , Feminino , Taxa de Filtração Glomerular , Hemoglobinas Glicadas/metabolismo , Hong Kong/epidemiologia , Humanos , Inibidores de Hidroximetilglutaril-CoA Redutases/uso terapêutico , Hipoglicemia/induzido quimicamente , Hipoglicemia/epidemiologia , Hipoglicemiantes/uso terapêutico , Índia/epidemiologia , Modelos Logísticos , Masculino , Pessoa de Meia-Idade , Antagonistas de Receptores de Mineralocorticoides/uso terapêutico , Análise Multivariada , Filipinas/epidemiologia , Qualidade da Assistência à Saúde , Insuficiência Renal Crônica/tratamento farmacológico , Insuficiência Renal Crônica/etiologia , Insuficiência Renal Crônica/metabolismo , República da Coreia/epidemiologia , Fatores Sexuais , Taiwan/epidemiologia , Uso de Tabaco/epidemiologia , Vietnã/epidemiologia
20.
Diabet Med ; 32(2): 220-5, 2015 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-25388749

RESUMO

AIM: To investigate the relationship between birthweight and cardiometabolic traits in two cohorts: one of Chinese adolescents and one of Chinese adults. METHODS: Birthweight and clinical data, including anthropometric traits, fasting plasma glucose and fasting plasma insulin levels, blood pressure and lipid profiles were collected from 2035 adolescents and 456 adults. A subset of 735 subjects underwent an oral glucose tolerance test to measure the glucose and insulin concentrations at 0, 15, 30, 60 and 120 min. RESULTS: Among adolescents, birthweight showed U-shaped relationships with larger body size, obesity, abdominal obesity in girls, insulin resistance and worse lipid profiles (0.0013 < P(quadratic) < 0.0499), as well as an inverse association with fasting plasma glucose (P(linear) = 0.0368). After further adjustment for adiposity, decreasing birthweight was associated with elevated fasting plasma glucose levels, greater insulin resistance and worse lipid profiles (3.1 × 10⁻5 < P(linear) < 0.0058). Among adults, high birthweight was associated with larger body size and abdominal obesity in men, while low birthweight was associated with elevated glucose levels at 15, 30, 60 and 120 min and a greater area under the curve at 0-120 min, as well as with ß-cell dysfunction (6.5 × 10⁻5 < P(linear) < 0.0437). Adjustment for adult adiposity did not substantially change the relationships. There was significant interaction between birthweight and abdominal obesity in elevating fasting plasma insulin and homeostasis model assessment of insulin resistance (P > 0.05), with abdominally obese adolescents in the lowest birthweight category (≤ 2.5 kg) having the highest risk of insulin resistance. CONCLUSIONS: Both high and low birthweights are associated with an increased risk of cardiometabolic abnormalities including obesity, abdominal obesity, hyperglycaemia, dyslipidaemia and insulin resistance, as well as with ß-cell dysfunction.


Assuntos
Peso ao Nascer , Dislipidemias/epidemiologia , Hiperglicemia/epidemiologia , Resistência à Insulina , Células Secretoras de Insulina/metabolismo , Insulina/metabolismo , Obesidade/epidemiologia , Adolescente , Adulto , Povo Asiático , Índice de Massa Corporal , Estudos de Coortes , Diabetes Mellitus Tipo 2/sangue , Diabetes Mellitus Tipo 2/epidemiologia , Diabetes Mellitus Tipo 2/etnologia , Diabetes Mellitus Tipo 2/fisiopatologia , Dislipidemias/sangue , Dislipidemias/etnologia , Dislipidemias/fisiopatologia , Feminino , Hong Kong/epidemiologia , Humanos , Hiperglicemia/sangue , Hiperglicemia/etnologia , Hiperglicemia/fisiopatologia , Insulina/sangue , Resistência à Insulina/etnologia , Secreção de Insulina , Masculino , Pessoa de Meia-Idade , Obesidade/sangue , Obesidade/etnologia , Obesidade/fisiopatologia , Obesidade Abdominal/sangue , Obesidade Abdominal/epidemiologia , Obesidade Abdominal/etnologia , Obesidade Abdominal/fisiopatologia , Fatores de Risco , Fatores Sexuais , Saúde da População Urbana/etnologia
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