Abstract：
:Oral administration of adenovirus strain K87 to BALB/c nude mice resulted in viral proliferation in the intestinal tract up to around week 6 at which point replication was suppressed. In other words, the host acquired resistance. However, this resistance was temporary and the viral infection persisted over a long period with repeated periods of proliferation and resistance. That the appearance of this resistance is the result of infecting mice with the virus and is not due to age difference per se was made clear through experimentation with nude mice of different age groups. However, it was indicated that increase in age is involved in the decreased rate of reproliferation following initial suppression. No evidence of the virus was obtained from any other organ throughout the infection. Furthermore, throughout the persistent infection, even during the aforementioned periods of resistance, no neutralizing antibody was detected from sera, intestinal wall or intestinal content. When spleen cells from BALB/c heterozygous littermate mice was transferred to the nude mice, an earlier onset of antiviral resistance was seen than in nude mice without the transfer, and this was accompanied by a rise in neutralizing antibody titer. From these results, it is believed that the resistance characteristic of nude mice infected by mouse adenovirus is dependent on some factor other than the neutralizing antibody invoked resistance exhibited by euthymic mice.
journal_name
Microbiol Immunoljournal_title
Microbiology and immunologyauthors
Umehara K,Hirakawa M,Hashimoto Kdoi
10.1111/j.1348-0421.1984.tb00722.xsubject
Has Abstractpub_date
1984-01-01 00:00:00pages
679-90issue
6eissn
0385-5600issn
1348-0421journal_volume
28pub_type
杂志文章abstract：:We developed a rapid and simple method for the screening of antiviral agents against herpes simplex virus (HSV) in a model of gastrointestinal herpetic infection in vitro. This method was based on inhibition of HSV-induced cytopathogenicity in gastric adenocarcinoma MKN-28 cells, as monitored by an MTT colorimetric as...
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更新日期：1989-01-01 00:00:00
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journal_title：Microbiology and immunology
pub_type： 杂志文章
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更新日期：1998-01-01 00:00:00
abstract：:A cholera-like enterotoxin was purified from Vibrio cholerae O139 strain AI-1841 isolated from a diarrheal patient in Bangladesh. Its characteristics were compared with that of cholera toxins (CTs) of classical strain 569B and El Tor strain KT25. Al-1841 produced as much toxin as O1 strains. The toxins were indistingu...
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