Towards high-resolution quantitative assessment of vascular dysfunction

Neurovascular alterations are increasingly recognized as a key feature of many brain diseases. They can manifest as a reduction in resting cerebral blood flow or cerebrovascular reactivity (CVR) in the whole brain or in specific regions, depending on the underlying condition. Neurovascular impairment is observed in hypertension, Alzheimer’s disease, stroke, multiple sclerosis and cerebral small vessel disease. Magnetic resonance imaging (MRI)-derived CVR mapping is a reliable marker of vascular dysfunction and has been performed mainly at standard functional MRI (fMRI) resolutions of 2–3 mm using the blood oxygen level dependent (BOLD) contrast. However, vascular alterations may occur at a finer scale (i.e., in the capillary bed) which would be better characterized with smaller voxel sizes. Capillaries in gray matter deliver oxygen and glucose to neural tissue and are arranged in a mesh structure, with variable density across the cortical depth. Given that the human cortex is, on average, 2.5 mm thick, submillimetric voxel sizes are effective in increasing the spatial specificity of measurements of hemodynamic and metabolic changes. Novel MRI sequences offer the possibility to map physiological parameters at high resolution with relatively simple experimental setups. In particular, pairing the BOLD acquisition with a contrast sensitive to blood volume changes, while administering a mild hypercapnic challenge, allows for simultaneous mapping of CVR, cerebral metabolic rate of oxygen consumption and other relevant parameters at a high resolution and can be performed at the clinical field strength of 3 T. We propose that this approach will help provide crucial insights into vascular impairment

Patents, supply of medicines and protection of public health

INTRODUCCIÓN: A fin de cumplir con las obligaciones asumidas en la Organización Mundial del Comercio, Argentina comenzó a conceder patentes sobre medicamentos en octubre de 2000. Cerca de 1.000 patentes farmacéuticas fueron concedidas entre 2000 y 2007 OBJETIVOS: caracterizar el patentamiento farmacéutico y, en particular, establecer el tipo de materias protegidas, las aplicaciones terapéuticas y el origen de los titulares de patentes otorgadas; examinar el posible impacto del nuevo régimen de patentamiento sobre las adquisiciones públicas de medicamentos; clarificar en qué situaciones y con qué procedimientos pueden otorgarse licencias obligatorias, especialmente en casos de emergencia sanitaria; y examinar qué implicaciones tiene el marco legal nacional e internacional de la propiedad intelectual sobre las políticas de salud pública. MÉTODOS: Se diseñó y analizó una base de datos con las patentes concedidas en el período indicado. Se revisaron los procedimientos de adquisición de medicamentos del Ministerio de Salud de la Nación y el marco legal aplicable, así como las negociaciones internacionales en curso. RESULTADOS: casi la totalidad de las patentes otorgadas pertenecen a empresas extranjeras; la mayoría se refiere a enfermedades del sistema nervioso e incluyen reivindicaciones del tipo "Markush". La mayoría de las patentes son de derivados o variantes de productos existentes (sales, formulaciones, polimorfos, etc.). CONCLUSIONES: El estudio concluye con recomendaciones, sobre los procedimientos de adquisición, concesión de licencias obligatorias y la transparencia del sistema de patentes en lo concerniente a medicamentos.INTRODUCTION: In order to comply with its obligations in the World Trade Organization, Argentina started to grant patents on pharmaceutical products in October 2000. In the period 2000-2007 near one thousand pharmaceutical patents were granted. OBJECTIVES: To characterize pharmaceutical patenting and, in particular, to establish the type of protected subject matter, the therapeutic uses and the origin of patent owners; to examine the possible impact of the new patenting regime on public procurement of medicines; to clarify in which situations and with which procedures compulsory licenses can be granted, particularly in cases of health emergencies; to examine the implications of the national and international legal framework of intellectual property on public health policies. METHODS: A data base with the patents granted in the above-mentioned period was designed and analyzed, the procurement procedures of the National Ministry of Health were studied, as well as the applicable legal framework and ongoing international negotiations. RESULTS: The study revealed that almost all granted patents belong to foreign companies. The majority refers to diseases of the nervous system and includes 'Markush-type'. In addition, the great majority of patents relate to derivatives or variants of existing products (salts, formulations, polymorphs, etc.). CONCLUSIONS: The study concludes with recommendations, about procurement procedures, the grant of compulsory licenses and the transparency of the patent system as regards medicines.Facultad de Ciencias Médica

Covid-19 and the role of smoking: the protocol of the multicentric prospective study COSMO-IT (COvid19 and SMOking in ITaly).

The emergency caused by Covid-19 pandemic raised interest in studying lifestyles and comorbidities as important determinants of poor Covid-19 prognosis. Data on tobacco smoking, alcohol consumption and obesity are still limited, while no data are available on the role of e-cigarettes and heated tobacco products (HTP). To clarify the role of tobacco smoking and other lifestyle habits on COVID-19 severity and progression, we designed a longitudinal observational study titled COvid19 and SMOking in ITaly (COSMO-IT). About 30 Italian hospitals in North, Centre and South of Italy joined the study. Its main aims are: 1) to quantify the role of tobacco smoking and smoking cessation on the severity and progression of COVID-19 in hospitalized patients; 2) to compare smoking prevalence and severity of the disease in relation to smoking in hospitalized COVID-19 patients versus patients treated at home; 3) to quantify the association between other lifestyle factors, such as e-cigarette and HTP use, alcohol and obesity and the risk of unfavourable COVID-19 outcomes. Socio-demographic, lifestyle and medical history information will be gathered for around 3000 hospitalized and 700-1000 home-isolated, laboratory-confirmed, COVID-19 patients. Given the current absence of a vaccine against SARS-COV-2 and the lack of a specific treatment for -COVID-19, prevention strategies are of extreme importance. This project, designed to highly contribute to the international scientific debate on the role of avoidable lifestyle habits on COVID-19 severity, will provide valuable epidemiological data in order to support important recommendations to prevent COVID-19 incidence, progression and mortality

Prevalence and Control of Dyslipidemia in Patients Referred for High Blood Pressure: The Disregarded "Double-Trouble" Lipid Profile in Overweight/Obese

INTRODUCTION: We evaluated the prevalence and control of dyslipidemia in a wide sample of patients referred to our ESH "Hypertension Excellence Centre" for high blood pressure (BP). Furthermore, we evaluated the role of adiposity on the serum lipid profile. METHODS: Observational study on 1219 consecutive outpatients with valid ambulatory BP monitoring (ABPM) referred for high BP. Patients with body mass index (BMI) ≥ 25 kg/m2 were defined as overweight/obese (OW/OB). Dyslipidemia and the control rates of low-density lipoprotein cholesterol (LDLc) were defined according to the 2016 ESC/EAS Guidelines. RESULTS: Mean age: 56.5 ± 13.7 years. Male prevalence: 55.6%. OW/OB patients were 70.2%. The prevalence of dyslipidemia was 91.1%. Lipid-lowering drugs were taken by 23.1% of patients. Patients with controlled LDLc comprised 28.5%, while BP was controlled in 41.6% of patients. Only 12.4% of patients had both 24-h BP and LDLc controlled at the same time. The higher the cardiovascular (CV) risk was, the lower was the rate of LDLc control (p < 0.001). Patients in secondary prevention had worse LDLc control than patients in primary prevention (OR 3.5 for uncontrolled LDLc, p < 0.001). OW/OB showed a more atherogenic lipid profile, characterized by lower high-density lipoprotein cholesterol (HDLc) (p < 0.001), higher non-HDLc (p = 0.006), higher triglycerides (p < 0.001), higher non-HDLc/HDLc (p < 0.001) and higher (non-HDLc + non-LDLc) (p < 0.001). CONCLUSION: Dyslipidemia is still too often neglected in hypertensives, especially in patients at higher CV risk. OW/OB hypertensives have a "double-trouble" atherogenic lipid pattern likely driven by adiposity. We encourage a comprehensive evaluation of the lipid profile in all hypertensives, especially if they are OW/OB, to correctly assess their CV risk and improve their management

Single-pill fixed-dose drug combinations to reduce blood pressure: the right pill for the right patient

Arterial hypertension is one of the major causes of cardiovascular morbidity and mortality worldwide. Effective and sustained reduction in blood pressure is essential to reduce individual cardiovascular risk. In daily clinical practice, single-pill fixed-dose combinations of different drug classes are important therapeutic resources that could improve both treatment adherence and cardiovascular risk management by targeting distinct pathophysiological mechanisms. The aim of this practical narrative review is to help physicians choosing the right single-pill fixed-dose combination for the right patient in the daily clinical practice, based on the individual clinical phenotype and cardiovascular risk profile