Friday, April 24, 2015

Asthma.. A new hope! | Novo tratamento para a asma?

Flickr via Creative Commons/NIAID

Identified for the first time the potential root cause of asthma. New treatment ahead?

Science Translational Medicine journal published a research paper of Cardiff University researchers, in collaboration with King’s College London and the Mayo Clinic (USA), in which is discussed the role of the calcium sensing receptor (CaSR) in asthma. 

The major conclusion is the "effectiveness of a class of drugs known as calcilytics in manipulating CaSR to reverse all symptoms associated with the condition. These symptoms include airway narrowing, airway twitchiness and inflammation - all of which contribute to increased breathing difficulty."

"Our findings are incredibly exciting," said the principal investigator, Professor Daniela Riccardi, from Cardiff University School of Biosciences. "For the first time we have found a link airways inflammation, which can be caused by environmental triggers - such as allergens, cigarette smoke and car fumes – and airways twitchiness in allergic asthma.

"Our paper shows how these triggers release chemicals that activate CaSR in airway tissue and drive asthma symptoms like airway twitchiness, inflammation, and narrowing. Using calcilytics, nebulized directly into the lungs, we show that it is possible to deactivate CaSR and prevent all of these symptoms."

While asthma is well controlled in some people, around one-in-twelve patients respond poorly to current treatments. This significant minority accounts for around 90% of healthcare costs associated with the condition. 

"According to Cardiff University Professor Paul Kemp, who co-authored the study, the identification of CaSR in airway tissue means that the potential for treatment of other inflammatory lung diseases beyond asthma is immense. These include chronic obstructive pulmonary disease (COPD) and chronic bronchitis, for which currently there exists no cure." 

"If we can prove that calcilytics are safe when administered directly to the lung in people, then in five years we could be in a position to treat patients and potentially stop asthma from happening in the first place," added Professor Riccardi.

Source: 
  • http://stm.sciencemag.org/content/7/284/284ra60
  • http://www.asthma.org.uk/News/scientists-discover-potential-root-cause-and-novel-treatment
  • http://www.bbc.co.uk/news/uk-wales-south-east-wales-32418080
  • http://www.kcl.ac.uk/newsevents/news/newsrecords/2015/April/Scientists-discover-asthmas-potential-root-cause.aspx

Identificada pela primeira vez a causa para a asma. Novo tratamento a caminho?

A revista Science Translational Medicine publicou um artigo de investigadores da Cardiff University em colaboração com o King’s College of London e a Mayo Clinic (USA), onde é discutido o papel dos receptores de cálcio (CaSR) na asma.

A principal conclusão do estudo é a "efectividade de uma classe de fármacos conhecidos por calcilytics na manipulação dos CaSR por forma a reverter os sintomas da asma. Estes incluem irritação, inflamação e diminuição das vias respiratórias, contribuindo para a dimunição da capacidade respiratória."

"As nossas conclusões são incrivelmente excitantes" afirmou o investigador responsável, Professor Daniela Riccardi, da Cardiff University School of Biosciences. "Pela primeira vez foi encontrada uma ligação entre a inflamação das vias respiratórias, que pode ser causada por efeitos ambientais - como alergénicos, fumo de tabaco e de carros - e a irritação das vias respiratórias na asma do tipo alérgico.

"O nosso artigo mostra como estes efeitos libertam químicos que activam a CaSR nas mucosas das vias respiratórias levando a sintomas de asma, como irritação, inflamação e espessamento das vias respiratórias. O uso de calcilytics, por acção nebulizadora directa nos pulmões, mostrou a possibilidade de desactivação do CaSR prevenindo todos os sintomas."

Apesar de ser possível realizar o controlo da asma em alguns indivíduos, perto de 1 em 12 pacientes respondem de uma forma não-activa aos tratamentos existentes. A esta minoria de casos estão associados cerca de 90% dos custos médicos da patologia.

De acordo com o Professor Paul Kemp, da Cardiff University e co-autor do estudo, a identificação de CaSR nas vias respiratórias significa que outras patologias de obstrução também poderão ser tratadas. Nestas patologias podem ser incluídas a obstrução pulmonar crónica e a bronquite crónica, para as quais não existe ainda tratamento. 

O Professor Riccardi ainda referiu que "se se conseguir provar que o calcilytics possa ser administrado de uma forma segura nos pulmões de um indivíduo, então em cerca de 5 anos estaremos numa posição de tratar e parar potencialmente efeitos da asma antes que estes ocorram"


Fontes:
  • http://stm.sciencemag.org/content/7/284/284ra60
  • http://www.asthma.org.uk/News/scientists-discover-potential-root-cause-and-novel-treatment
  • http://www.bbc.co.uk/news/uk-wales-south-east-wales-32418080
  • http://www.kcl.ac.uk/newsevents/news/newsrecords/2015/April/Scientists-discover-asthmas-potential-root-cause.aspx

Thursday, April 23, 2015

Pollen Alert | Alerta de pólens

SOUL News:

Pollen report for the week April 23-30, according to Sociedade Portuguesa de Alergologia e Imunologia Clínica weekly report:
  • Very high values: Beira Interior and Alentejo. 
  • High values: Trás os Montes, Lisboa, Setúbal and Algarve. 
  • Moderate values: Beira Litoral and Entre o Douro e Minho. 
  • Low value: Açores and Madeira. 

Avisos de pólenes para a semana de 23 a 30 de Abril, de acordo com o relatório Sociedade Portuguesa de Alergologia e Imunologia Clínica:
  • Muito elevado: Beira Interior and Alentejo. 
  • Elevado: Trás os Montes, Lisboa, Setúbal and Algarve. 
  • Moderado: Beira Litoral and Entre o Douro e Minho. 
  • Baixo: Açores and Madeira. 


Fonte: http://www.tvi24.iol.pt/sociedade/niveis-elevados/alergias-polenes-em-niveis-muito-elevados-ate-ao-fim-do-mes

Tuesday, April 14, 2015

Quality of Air & Air pollution

The European Environment Agency released at February 18, 2015, a briefing regarding Health and environment: The European environment - state and outlook 2015. The topic is critical nowadays with many people (especially young people) suffering from respiratory diseases and SOUL may give some help for authorities and citiziens.

As stated in the report:  

"Air pollution remains a major environmental health risk in Europe, contributing to the burden of respiratory and cardiovascular diseases, lung cancer, and other health effects.[14][15]16] Despite improvements with respect to some pollutants, exposures to particulate matter, ozone and carcinogenic benzo(a)pyrene are of high concern. This is particularly evident using the estimates based on WHO air quality guidelines,[15] which are more stringent than EU air quality standards[17]"

More information at 
http://www.eea.europa.eu/soer-2015/europe/health-and-environment

Friday, April 3, 2015

Blog of SOUL



Blog of SOUL now on-line...

Here you may check for news about SOUL and health alerts.

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Primelayer Team