Medicine an Surgery notes

Apr 25th, 2015
Studypool Tutor
Price: $5 USD

Tutor description

Word Count: 820
Showing Page: 1/19
Hepatitis bkibaru Etiology. HBV is a 42-nm-diameter member of theHepadnaviridae family a noncytopathogenic, hepatotropic group of DNAviruses. HBV has a circular, partially double-stranded DNAgenome The surface of the virus includes two particlesdesignated hepatitis B surface antigen (HBsAg): a 22-nm-diameter spherical particle and a 22-nm-wide tubular particle with a variable length of up to 200nm. The inner portion of the virion contains hepatitis B core antigen (HBcAg), thenucleocapsid that encodes the viral DNA a nonstructural antigen called hepatitis B eantigen (HBeAg), a nonparticulate solubleantigen derived from HBcAg by proteolytic selfcleavage. HBeAg serves as a marker of active viral replication. . Replication of HBV occurs predominantly inthe liver but also occurs in the lymphocytes,spleen, kidney, and pancreasrisk factor forperinatal exposure to an HBsAg-positive mother. The risk of transmission is greatest if the mother also is HBeAg positive 70-90% of their infants become chronically infected if untreated. During the neonatal period, hepatitis B antigen is present in blood of 2infants born to affected mothers, indicating that intrauterine infection o antigenemia appearing later, suggest thattransmission occurred at the time of delivery;virus contained in amniotic fluid or inmaternal feces or blood may be the source. . Although most infants born to infect

Review from student

Studypool Student
" Very Satisfied. "
Ask your homework questions. Receive quality answers!

Type your question here (or upload an image)

1827 tutors are online

Brown University

1271 Tutors

California Institute of Technology

2131 Tutors

Carnegie Mellon University

982 Tutors

Columbia University

1256 Tutors

Dartmouth University

2113 Tutors

Emory University

2279 Tutors

Harvard University

599 Tutors

Massachusetts Institute of Technology

2319 Tutors

New York University

1645 Tutors

Notre Dam University

1911 Tutors

Oklahoma University

2122 Tutors

Pennsylvania State University

932 Tutors

Princeton University

1211 Tutors

Stanford University

983 Tutors

University of California

1282 Tutors

Oxford University

123 Tutors

Yale University

2325 Tutors