home
***
CD-ROM
|
disk
|
FTP
|
other
***
search
/
Shareware Overload Trio 2
/
Shareware Overload Trio Volume 2 (Chestnut CD-ROM).ISO
/
dir26
/
med9406b.zip
/
M9460313.TXT
< prev
next >
Wrap
Text File
|
1994-06-12
|
3KB
|
43 lines
Document 0313
DOCN M9460313
TI Theoretical and technical concerns in inactivation/elimination of
viruses in plasma derivatives.
DT 9408
AU Hilfenhaus J; Niedrig M; Nowak T; Research Laboratories, Behringwerke
AG, Marburg.
SO Dev Biol Stand. 1993;81:117-23. Unique Identifier : AIDSLINE
MED/94229365
AB To know the virus eliminating/inactivating capacity of the manufacturing
process of a plasma protein, it is essential to analyse it by adding
virus to the source material or to different materials obtained at
various stages of the manufacturing procedure and then to determine the
elimination/inactivation of this virus. To carry out such experiments
properly, three prerequisites have to be fulfilled: (i) the
manufacturing procedure must be scaled down as exactly as possible; (ii)
relevant test viruses have to be selected for the spiking experiments
and (iii) the resulting samples must be assayed properly for infectious
virus. The successful reduction of a manufacturing procedure to a more
than 1000-fold smaller scale has to be validated to prove that it
corresponds to the production scale. The most important viruses of risk
in human plasma are hepatitis B virus (HBV), hepatitis C virus (HCV) and
human immunodeficiency virus (HIV). HIV is the only one of these viruses
which can be tested in vitro. A decision has therefore to be made
concerning which other viruses should be used. The selection of test
viruses depends on (i) the relationship of these candidates to the
viruses of risk; (ii) the possibility of growing them to high titres in
vitro and (iii) the availability of accurate infectivity assays. The use
of highly sensitive assays is necessary to be able to determine small
amounts of residual viruses. Since such assays are based on a 7 to 28
day incubation of the virus samples on cell cultures, these samples must
be sterile and non-cytotoxic.(ABSTRACT TRUNCATED AT 250 WORDS)
DE Biological Products/ADVERSE EFFECTS/ISOLATION & PURIF/*STANDARDS
Containment of Biohazards Drug Contamination/PREVENTION & CONTROL
Human Models, Biological Plasma/*MICROBIOLOGY Risk Safety
Sensitivity and Specificity Virology/INSTRUMENTATION/*METHODS
Virulence Viruses/ISOLATION & PURIF/*PHYSIOLOGY/PATHOGENICITY JOURNAL
ARTICLE REVIEW REVIEW, TUTORIAL
SOURCE: National Library of Medicine. NOTICE: This material may be
protected by Copyright Law (Title 17, U.S.Code).