AGE AND SARS-COV2 INFECTION
| Autor: | SLAVICA DODIG, IVANA ČEPELAK, IVAN PAVIĆ |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: | |
| Zdroj: | Acta medica Croatica : Časopis Akademije medicinskih znanosti Hrvatske Volume 74 Issue 2 |
| ISSN: | 1848-8897 1330-0164 |
| Popis: | SARS-CoV-2 (Severe Acute Respiratory Syndrome Corona Virus 2), a novel virus of the beta coronavirus group RNA viruses, is responsible for a zoonotic disease named COVID-19 (coronavirus disease from 2019). The main receptor through which the virus enters the host cell is angiotensin-converting enzyme 2 (ACE2), known as a multifunctional protein. ACE2 expression has been found in oral and nasal mucosa, lungs, adipose tissue, heart, brain, kidneys, vascular tissue, stomach, liver. Upon entry of the virus into the target host cells, two processes are initiated, the host’s immune response and the infl ammatory cascade. As immune (innate and adaptive) and infl ammatory responses change throughout life both qualitatively and quantitatively, both processes are responsible for varying degrees of disease severity depending on the patient’s age. Short-time experience with SARS-CoV-2 infection has shown that: (i) children and adolescents develop the disease with mild symptoms, mainly on upper respiratory airways; (ii) the disease has a more severe course in adult patients with associated chronic diseases such as cardiovascular and renal diseases, chronic respiratory diseases, diabetes, etc.; and (iii) the most severe, often fatal disease occurs in the elderly, due to more pronounced processes of immunosenescence and infl amm-aging. RSARS-CoV-2 (engl. Severe Acute Respiratory Syndrome Coronavirus 2), novi virus iz skupine RNA betakoronavirusa, odgovoran je za zoonotsku bolest nazvanu COVID-19 (bolest uzrokovana koronavirusom iz 2019.). Glavni receptor pomoću kojega virus ulazi u stanicu domaćina je angiotenzin konvertirajući enzim 2 (ACE2), poznat kao multifunkcionalni protein. Receptor ACE2 prisutan je u oralnoj i nosnoj sluznici, plućima, masnom tkivu, srcu, mozgu, bubrezima, vaskularnom tkivu, želucu, jetri. Nakon ulaska virusa u ciljne stanice domaćina pokreću se dva procesa, imunosni odgovor domaćina i upalna kaskada. Budući da se imunosni (urođeni i stečeni) i upalni odgovori tijekom života mijenjaju u kvalitativnom i kvantitativnom smislu, oba procesa su odgovorna za različit stupanj ozbiljnosti bolesti, ovisno o pacijentovoj dobi. Kratkotrajno iskustvo s infekcijom uzrokovanom virusom SARS-CoV-2 pokazalo je da: (i) djeca i adolescenti razvijaju bolest s blagim simptomima, uglavnom na gornjim dišnim putevima; (ii) bolest ima teži tijek u odraslih bolesnika s pridruženim kroničnim bolestima kao što su kardiovaskularne i bubrežne bolesti, kronične respiratorne bolesti, dijabetes i sl.; (iii) najteži, često fatalni oblik pojavljuje se u starijih osoba zbog izraženijih procesa imunosenescencije i upale pri starenju. |
| Databáze: | OpenAIRE |
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