Table Of ContentCurrent Topics in 
Microbiology 
134  and Immunology 
Editors 
A  Clarke, Parkvi11eNictoria  .  R W. Compans, 
Binningham/A  labama  .  M  Cooper, Birmingham!A  labama 
H. Eisen, Paris  .  W. Goebel, Wfuzburg  .  H. Koprowski, 
Philadelphia  .  F. Melchers, Basel  .  M  Oldstone, 
La Jolla/California  .  P.K Vogt, Los Angeles 
H. Wagner, Ulm  .  1. Wilson, La Jolla/California
This  collection  of studies  was  conceived  as  part of a  two 
volume review of the subject.  The contents of Volume 133 
are listed below. 
Arenaviruses:  Genes, Proteins, and Expression 
M.B.A. OLDSTONE:  The Arenaviruses - An Introduction 
D.H.L. BISHOP and D.D. AUPERIN: Arenavirus Gene Struc-
ture and Organization 
P.l.  SOUTHERN  and D.H.L.  BISHOP:  Sequence Comparison 
Among Arenaviruses 
M.l.  BUCHMEIER  and  B.S.  PAREKH:  Protein  Structure  and 
Expression Among Arenaviruses 
Y. RIVIERE:  Mapping Arenavirus Genes Causing Virulence 
S.l. FRANCIS,  P.l.  SOUTHERN,  A.  VALSAMAKIS,  and M.B.A. 
OLDSTONE:  State of Viral  Genome and Proteins During 
Persistent Lymphocytic Choriomeningitis Virus Infection 
D.H.  WALKER  and  F.A.  MURPHY:  Pathology  and  Patho-
genesis of Arenavirus Infections 
Subject Index
Arenaviruses 
Biology and Immunotherapy 
Edited by M. B. A. Oldstone 
With 33  Figures 
Springer-Verlag 
Berlin Heidelberg NewY  ork 
London Paris Tokyo
MICHAEL  B.A. OWSTONE, M.D. 
Department of Immunology 
Scripps Clinic and Research Foundation 
10666 North Torrey Pines Road 
La Jolla, CA 92037, USA 
ISBN-13: 978-3-642-71728-4  e-ISBN-13: 978-3-642-71726-0 
DOl:  10.1007/978-3-642-71726-0 
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©  Springer-Verlag Berlin Heidelberg 1987 
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Table of Contents 
M.B.A.  OLDSTONE:  The Arenaviruses-
An Introduction  .  .  .  .  .  .  .  .  .  1 
e.J. PETERS,  P.B.  JAHRLING,  C.T.  Lm, R.H.  KENYON, 
K.T.  McKEE JR.,  and J.G.  BARRERA  ORO: 
Experimental Studies of Arenaviral Hemorrhagic 
Fevers. With 7 Figures  .  .  .  .  .  .  .  .  .  .  5 
J.B.  MCCORMICK:  Epidemiology and Control of 
Lassa Fever. With 1 Figure  .  .  .  .  .  ..  ..  69 
M.C.  WEISSENBACHER,  R.P.  LAGUENS,  and C.E. 
COTO:  Argentine Hemorrhagic Fever. With 1 
Figure  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  79 
C.R.  HOWARD:  Neutralization of Arenaviruses by 
Antibody. With 3 Figures  .  .  .  .  .  .  .  .  ..  117 
J.E.  ALLAN,  J.E.  DIXON,  and P.e. DOHERTY:  Nature 
of the  Inflammatory Process  in  the Central 
Nervous System of Mice  Infected with 
Lymphocytic Choriomeningitis Virus.  With 5 
Figures  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  ..  .  131 
O.  MARKER  and A.R.  THOMSEN:  Clearance of Virus 
by T  Lymphocytes  Mediating Delayed Type 
Hypersensitivity.  With 6 Figures  .  .  .  .  .  .  .  .  145 
R.M.  WELSH:  Regulation and Role of Large 
Granular  Lymphocytes  in  Arenavirus  Infections  185 
M.B.A.  OLDSTONE:  Immunotherapy for Virus 
Infection. With 10  Figures  .....  ... 211 
S.P.  FISHER-HoCH  and J.B.  MCCORMICK: 
Pathophysiology  and  Treatment  of  Lassa  Fever  231 
Subject Index  241 
Indexed in  Current  Contents
List of Contributors 
You will  find  the addresses at the beginning of the 
respective contribution 
ALLAN,  J.E.  131  Lru, C.T.  5 
BARRERA  ORO,  J.G.  5  MARKER,  O.  145 
COTO,  e.E.  79  MCCORMICK,  J.B.  69,  231 
DIXON,  J.E.  131  McKEE  K.T.,  JR.  5 
DOHERTY,  P.C.  131  OLDSTONE,  M.B.A.  1,  211 
FISHER-HoCH,  S.P.  231  PETERS,  C.J.  5 
HOWARD,  C.R.  117  THOMSEN,  A.R.  145 
JAHRLING,  P.B.  5  WEISSENBACHER,  M.e.  79 
KENYON,  R.H.  5  WELSH,  R.M.  185 
LAGUENS,  R.P.  79
The Arenaviruses - An Introduction 
M.B.A. OLDSTONE 
Viruses are generally studied either because they cause significant human, animal 
or plant disease  or for  their utility as  materials  to  probe a  basic  phenomenon 
in biology, chemistry, genetics or molecular biology. Arenaviruses are unusually 
interesting in that they occupy both of these categories. 
Arenaviruses  cause  severe  human diseases  known  primarily  as  the  hemor-
rhagic  fevers  occurring  in  South and  Latin America  (Bolivia:  Machupo  virus 
and Argentina:  Junin virus)  and  in Africa  (Lassa virus).  Because  such viruses 
produce  profound  disability  and  may  kill  the  persons  they  infect,  they  are  a 
source of economic hardship in the countries where they are prevalent. Further, 
they  provide  new  problems  for  health care  personnel  owing  to  the  narrowing 
of the  world  as  visitors  from  many  countries  increasingly  travel  to  and  from 
these endemic areas.  In  addition,  lymphocytic choriomeningitis virus  (LCMV) 
can infect  humans  worldwide,  although  the  illness  is  most often  less  disabling 
than those elicited by other arenaviruses. Yet LCMV is likely of greater concern 
to  non-arena-virologists  and  experimentalists  using  tissue  culture  or animals, 
i.e.,  workers  in  molecular  biology,  cancer  research,  virology,  immunobiology, 
etc.,  because  normal  appearing  cultured cells  or tissues  and  animals  used  for 
research may be persistently infected with LCMV without manifesting clinical 
disease  or  cytopathology  and  transmit  that  infection  to  laboratory  workers 
(reviewed  OLDSTONE  and PETERS  1978).  For example,  HINMAN  et al.  (1975)  re-
corded 48 cases among personnel in the radiotherapy department and vivarium 
at the University of Rochester School of Medicine.  These persons had contact 
with Syrian hamsters into which tumors, unknown to be occultly infected with 
LCMV, were transferred. These tumors were obtained from an outside research 
supplier  who  distributed  tumor  cell  lines  to  numerous  laboratories  primarily 
interested  in  SV -40  and  polyoma  virus  research.  In  subsequent  investigation 
of the  22  tumor  lines  in  question,  13  yielded  infectious  LCMV.  Infection  was 
spread  from  the  experimental  area,  presumably  via  air  ducts.  Similarly,  the 
Communicable  Disease  Center,  USA,  has  recorded  multiple  cases  of LCMV 
infections  in  families  scattered  from  the  northeast  coast  of the  United  States 
(New  York)  to  the western  region  (Reno,  Nevada)  originating  from  hamsters 
sold by a  single supplier in the southeast (Florida).  Several investigators found 
that their hybridomas making monoclonal antibodies were infected with LCMV. 
The mechanism  was  likely  by  the  use  of infected  splenic  feeder  cells  obtained 
Department of Immunology,  Scripps  Clinic  and  Research  Foundation,  10666  North Torrey  Pines 
Road, La Jolla, CA 92037, USA 
Current Topics in Microbiology and Immunology, Vol. 134 
©  Springer-Verlag Berlin· Heidelberg 1987
2  M.B.A. Old stone 
Table 1. Recognized Arenavirus diseases of man 
Virus  Disease  Locality  Rodent  Person to  Laboratory 
reservoir  person  model of 
and vector  trans- human 
mission  infection 
Lymphocytic  Grippe, aseptic  Probably origi- Mus musculus  Never  Mouse 
chorio- meningitis, oc- nated in  Europe,  natural host;  documented 
meningitis  casional more  now worldwide  colonized ro-
severe forms  dents, parti-
of meningoence- cularly mice 
phalomyelitis  and hamster; 
dog? 
Junin  Argentinian  Circumscribed  Calomys mus- Occasional  Guinea pig 
hemorrhagic  area of Argen- culinus, pos-
fever  tina; Buenos  sibly others 
Aires  to northeast 
Machupo  Bolivian  Beni  region  Calomys  Occasional,  Rhesus 
hemorrhagic  of Bolivia  callosus  particularly  monkey 
fever  spouses;  recog-
nized hospital 
outbreak 
Lassa  Lassa fever  Western Africa  Mastomys  Frequent;  Squirrel mon-
nataliensis  blood con- key, Guinea 
tamination  pig strain 13 
LCMVWEin 
guinea pig 
from clinically healthy but persistently infected mice purchased from a  commer-
cial  source.  Hence,  researchers  studying  such  diverse  areas  as  the  molecular 
biology of SV4  0,  biologic effects of chlamydia, immune responses of mice mak-
ing hybridoma cells or production of ascites fluids have found their preparations 
contaminated with LCMV (LEHMANN-GRUBE  1973; WHO Bulletin 1975; GRIM-
WOOD  1983,  1985; VAN  DER  ZElJST  et al.  1983a, b). Thus,  experimentalists may 
be exposed to the unexpected and potentially dangerous effects of LCMV owing 
to its non-cytolytic persistent infection in tissue culture cell lines and experimen-
tal or pet animals.  The recognized  arenavirus diseases  of man,  the vectors and 
laboratory models used for their study are listed in Table 1. 
Study of the biology of LCMV has led to several major advances in contem-
porary  virology  and  immunology.  For  example,  research  on  both  the  acute 
and  persistent  infection  of mice  with  LCMV  led  to  the  first  descriptions  of 
virus induced immunopathologic disease (ROWE  1954), ofT cell mediated killing 
(COLE  et al.  1973;  MARKER  and  VOLKERT  1973)  and  of the  two  unique  and 
separate  signals  necessary  for  recognition  and  lysis  of virus  infected  targets 
by cytotoxic T  lymphocytes (CTLs) (ZINKERNAGEL  and DOHERTY  1974). Hence, 
study of the LCMV  indicated  that CTLs  kill  virus  infected  targets  only when 
two conditions are met: recognition of virus specific determinants and matching 
of the  major  histocompatibility  complex  on  the  CTL  and  the  infected  target 
cell. This phenomenon ofMHC restriction, one of the major tenets of contempo-
The Arenaviruses - An Introduction  3 
rary  immunology,  was  not  only  first  described  by  experimentalists  working 
with  LCMV  but  also  its  implications  were  clearly  recognized  in  this  setting 
(reviewed by ZINKERNAGEL  and DOHERTY  1979). Additionally,  the components, 
kinetics, genetic control and deposition of immune complexes from the circula-
tion  into  a  variety  of tissues  including  renal  glomeruli,  brain  choroid  plexus 
and blood vessel arteries were explored by utilizing the LCMV model (OLDSTONE 
and DIXON  1969).  The conclusions were  extended  to work on numerous  RNA 
and  DNA  virus  infections  as  well  as  infections  with  other  microbial  agents 
(reviewed  OLDSTONE  1975).  Recently,  by  examination of its  supposedly  benign 
effect,  LCMV  was  shown  to  cause  disease  not  by  means  of the  well-known 
anatomical viral induced destruction of infected cells,  but rather by disordering 
the  synthesis  of such  cells'  differentiated  products  (OLDSTONE  et al.  1982;  re-
viewed  OLDSTONE  1984).  These  studies  in  animals  indicate  that  viruses  may 
cause  disease  by  altering  the  cells'  physiology  and  function  without  causing 
their  destruction.  If these  findings  are  applicable  to  human  viruses,  in  vivo, 
we  can  anticipate  much-needed  understanding  of  the  mechanisms  by  which 
dysfunctions of endocrine, nervous and immune systems occur. 
Arenaviruses  obtained  their  name  from  arenosus  Latin  for  sandy  - on 
the  basis  of characteristic  fine  granularities  seen  inside  the  virion  on ultrathin 
section (ROWE et al. 1970). To avoid confusion between areno and adeno viruses, 
the International Committee on Viral Nomenclature changed the name to arena-
viruses (ROWE  et al.  1970). 
Recently,  the ability of such viruses  to cause persistent infection in cultured 
cells  and animals,  as  well  as  their non-cytolytic nature,  has  been coupled with 
the wealth of information known about their biologic activity to inspire intensive 
investigation  into  the molecular control of viral genes  and  the molecular basis 
of arenavirus  induced disease.  It is  the  melding of newly  obtained information 
on  the viral chromosomes and gene  structure,  the proteins encoded by various 
viral genes and the ambisense (positive-genomic sense and negative-complemen-
tary  sense)  organization  of the  arenavirus  genome  - particularly  as  relates  to 
the  molecular  basis  of viral  persistence,  tissue  tropism,  viral  gene  regulation 
and  mechanism  of pathogenesis  and  biology  of  the  virus  - that  led  to  the 
selection of arenaviruses for these two volumes in the Current Topics in Microbi-
ology and Immunology series. 
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