עמוד 1 מ 171 תוצאות
The cytomegalovirus-immediate early (CMV-IE) promoter is widely used as a strong and constitutively active promoter. Although the CMV-IE promoter does not harbor heat-responsive sequences, we determined its heat inducibility. We analyzed in vitro and in vivo heat responsiveness and possible
OBJECTIVE
To investigate whether hyperthermia can enhance the killing effect of 5- fluorocytosine (5- FC) on human colorectal carcinoma cell lines SW480 transfected with carcinoembryonic antigen (CEA) tissue- specific cytosine deaminase (CD) gene in vitro,and study its mechanism.
METHODS
Human
Engineered bacterial cells that are designed to express therapeutic enzymes under the transcriptional control of remotely inducible promoters can mediate the de novo conversion of non-toxic prodrugs to their cytotoxic forms. In situ cellular expression of enzymes provides increased stability and
Familial Mediterranean fever (FMF) is a hereditary autoinflammatory disease that is inherited in an autosomal recessive manner and is caused by mutations in the MEFV gene. As the name indicates, FMF occurs within families and is more common in individuals of Mediterranean descent than in persons of
Northern blot hybridisation was used to study the accumulation of specific cellular mRNAs (ubiquitin and actin) in Vero cells infected with African swine fever virus (ASFV). ASFV modulates the cytoplasmic levels of ubiquitin and actin mRNAs throughout infection. Before viral DNA replication,
Viridans streptococci (VS) are an increasing cause of bacteraemia in neutropenic patients with cancer. Case-control studies of predisposing factors for acquisition of this infection in children are not published. Between January 1989 and December 1999, 168 episodes of bacteraemia in 161 children
The herpesvirus of bovine malignant catarrhal fever (MCFV, alcelaphine herpes-virus I) causes an acute, fatal lymphoproliferative disorder in rabbits. In dying rabbits, virus antigen and infectivity were associated with medium sized lymphocytes and not with theproliferative lymphoblastoid cells.
Two-dimensional (2D) analysis of African swine fever (ASF) virus purified by Percoll gradient centrifugation resolves 54 structural proteins, 30 in conventional IEF gels and 24 in NEPHGE gels, while only 26 structural proteins are separated by SDS-PAGE. The two main bands separated by SDS-PAGE, with
Infection of Vero cells with African swine fever (ASF) virus resulted in a marked increase of DNase active on single-stranded DNA (ss-DNase). No increase was observed for double-stranded DNA-specific nuclease activity. In contrast to uninfected cell ss-DNase, which has a pH optimum at pH range
African swine fever virus (ASFV) induces the synthesis of a virus-specific DNA polymerase, which is inhibited by phosphonoacetic acid and cytosine arabinoside. In contrast to all other alpha-like DNA polymerases of DNA viruses, ASFV-specific DNA polymerase is resistant to aphidicolin. Concentrations
Seventeen extensively pre-treated patients with non-Hodgkin's lymphoma in relapse were treated with high-dose cytosine arabinoside given at a dose of 3 g/m2 on a 12-hour basis for two to eight doses per course. Seventy percent of patients (12 of 17) showed response with this regimen, including three
To determine optimal dosage, Dihydroxyanthracenedione (DHAD) was given once daily for 3 days at dosage levels of 6, 7, 8, and 10 mg/m2 in combination with a 7-day continuous infusion of cytosine arabinoside (Ara-C). Nineteen of 20 children with leukemia who received these agents developed fever
Intensive induction chemotherapy was applied to 25 patients with acute myelogenous leukemia by continuing drugs (daunorubicin, behenoyl-cytosine arabinoside, 6-mercaptopurine and prednisolone) until the achievement of severe bone marrow aplasia (leukemic cells less than 1,000/microliters). Complete
Experience with high-dose cytosine arabinoside (HDAC) in pediatric solid tumors is limited. Sixteen children with solid tumors resistant to conventional therapies were registered in a pilot Pediatric Oncology Group (POG) study that required the administration of HDAC at 3 g/m2 every 12 hours for