Serological testing of hepatitis E virus infection at the Croatian Institute of Transfusion Medicine

Autor: Franić, Krešimir
Přispěvatelé: Šupraha-Goreta, Sandra, Miletić, Manuela
Jazyk: chorvatština
Rok vydání: 2023
Předmět:
Popis: Za virus hepatitisa E (HEV) karakteristično je da ga većina ljudi preboli asimptomatski. Ipak, za određene skupine kao što su trudnice, pacijenti na imunosupresivnoj terapiji te za imunokompromitirane pojedince s već postojećim bolestima jetre, HEV infekcija može dovesti do letalnog ishoda.Tijekom 16 mjeseci (2019. i 2020. godine), nešto više od 500 pacijenata serološki je ispitivano na biljege hepatitisa E u Hrvatskom zavodu za transfuzijsku medicinu (HZTM), i to u Odjelu za dijagnostiku krvlju prenosivih bolesti (OKB). Korišteni su komercijalni HEV IgG Dia.Pro i HEV IgM Dia.Pro testovi koji se temelje na ELISA metodi. Ispitivanja su obavljena na Gemini analizatoru i kompletan protokol pratio je upute proizvođača. Obzirom na rezultate testiranja pacijenata (TP), HEV IgG seroprevalencija iznosi 23,2 % (117 uzoraka) dok je stopa HEV IgM seroprevalencije 9,3 % (47 uzoraka). HZTM još je 2014. godine proveo seroprevalencijsku studiju koja je obuhvatila 1036 uzoraka dobrovoljnih darivatelja krvi (DDK). HEV seroprevalencija u DDK-a procijenjena je s četiri dostupna testa (3 ELISA i 1 imunoblot (IB) test). Uspoređeni su rezultati dobiveni Dia.Pro testom. HEV IgM seroprevalencija među TP statistički je značajno veća u odnosu na DDK (9,3 % naspram 4,4 %) što je dokazano hi-kvadrat testom (χ2 test) uz razinu značajnosti testa α=0,05 (χ2=15,13 > χ2 df=1,α=0,05=3,84, p < 0,05). Ova veća HEV IgM seroprevalencija može se objasniti činjenicom da je riječ o pacijentima kod kojih je liječnik posumnjao na HEV infekciju. Rezultati ove studije pokazuju da je, ukoliko pacijent ima simptome virusnog hepatitisa, a uobičajeni uzročnici su isključeni (HAV, HBV, HCV, EBV, CMV), preporučljiva serološka dijagnostika na biljege virusnog hepatitisa E. Statistički značajna razlika nije primijećena kod HEV IgG seroprevalencije (23,2 % naspram 20,2 %, χ2=1,77 < χ2 df=1,α=0,05=3,84, p > 0,05) što upućuje na zaključak da je HEV i naša autohtona infekcija. The characteristic of hepatitis E virus (HEV) is that most people get over it asymptomatically. However, for certain groups such as pregnant women, patients on immunosuppressive therapy and immunocompromised individuals with pre-existing liver diseases, HEV infection can lead to a fatal outcome. During 16 months (2019 and 2020), slightly more than 500 were serologically tested for hepatitis E markers at the Croatian Institute for Transfusion Medicine (CITM), in the Department for Diagnostics of Blood Transmitted Diseases. Commercial HEV IgG Dia.Pro and HEV IgM Dia.Pro tests were used. The principle of used method is ELISA. Tests were performed on Gemini analyzer and the complete procedure followed the producer's instructions. Considering the results of patient testing (TP), the HEV IgG seroprevalence is 23.2 % (117 samples) while the HEV IgM seroprevalence rate is 9.3 % (47 samples). In 2014, CITM conducted a seroprevalence study that included 1036 samples from voluntary blood donors (VBD). HEV seroprevalence in VBD was assessed with four available tests (3 ELISA and 1 immunoblot (IB) test). The results obtained with Dia.Pro test were compared. HEV IgM seroprevalence among TP is significantly higher compared to VBD (9.3 % vs. 4.4 %) as proven by the chi-square test (χ2 test) with a significance level of α=0.05 (χ2=15.13 > χ2 df=1,α=0.05=3.84, p < 0.05). This higher HEV IgM seroprevalence can be explained by the fact that these are patients in whom the doctor suspected HEV infection. The results of these studies show that, if the patient has symptoms of viral hepatitis, and the usual causative agents are excluded (HAV, HBV, HCV, EBV, CMV), serological diagnosis for markers of viral hepatitis E is recommended. No statistically significant difference was observed in HEV IgG seroprevalence (23.2 % vs. 20.2 %, χ2=1.77 < χ2 df=1,α=0.05=3.84, p > 0.05) which leads to the conclusion that HEV is also our autochthonous infection.
Databáze: OpenAIRE