scholarly journals P24 antigen detection, viral isolation, DNA-PCR and in vitro antibody production for the diagnosis of HIV-1 latent infection in heterosexual women at high risk for HIV-1 infection.

1995 ◽  
Vol 71 (2) ◽  
pp. 123-125
Author(s):  
M Di Stefano ◽  
J R Fiore ◽  
M Chironna ◽  
G Buccoliero ◽  
C Romanelli ◽  
...  
1994 ◽  
Vol 36 (3) ◽  
pp. 287-292 ◽  
Author(s):  
Jorge Simão do Rosário Casseb ◽  
Adele Caterino-de-Araujo

Several cases of primary HIV-1 infection are not identified, either because the diagnosis is not suspected or because they test negative for HIV-1 antibody. This work presents an uncommon case of primary HIV-1 infection in an young parenteral drug abuser man, who presented symptoms of acute hepatitis. During the initial acute phase the serum sample of the patient tested negative for the presence of antibodies against several viruses, including HIV-1. Nevertheless, the diagnosis of primary HIV-1 infection was suspected by using an alternative method for"in vitro" induced antibody production (IVIAP), and confirmed by p24 antigen serum positivity and seroconversion in serial plasma samples of the patient. The authors suggest the use of the IVIAP and others complementary assays to help the diagnosis of acute HIV-1 infection in persons at high risk conditions.


AIDS ◽  
1991 ◽  
Vol 5 (1) ◽  
pp. 15-20 ◽  
Author(s):  
Anita De Rossi ◽  
Anthony E. Ades ◽  
Fabrizio Mammano ◽  
Annarosa Del Mistro ◽  
Alberto Amadori ◽  
...  

1995 ◽  
Vol 72 (6) ◽  
pp. 498-501
Author(s):  
M C Garcia Rodriguez ◽  
I Bates ◽  
I de Jose ◽  
F Hawkins ◽  
R Martinez-Zapico ◽  
...  

Author(s):  
Retno Budiarti ◽  
Siti Qamariyah Khairunisa ◽  
Nasronudin ◽  
Kuntaman ◽  
Guritno

Cellular immune has an important role in response HIV infection, which is attack the infected cells to activate signaling molecule. Hyperbaric Oxygen (HBO) worked as complementary treatment for HIV infection. The production of ROS and RNS molecules during hyperbaric exposure can affect gene expression which contributes to cellular adaptative response. This study was conducted to explore the mechanisms of cellular adaptive response to HIV infection during hyperbaric exposure. This study was carried on in vitro using healthy volunteers’ PBMCs (Peripheral Blood Mononuclear Cells) cultures infected with HIV-1. The study was conducted as a post- test only group design. The experimental unit was PBMC from venous blood of healthy volunteers which were cultured in vitro and infected by co-culturing with HIV-1 in MT4 cell line. The experimental unit consist of treatment and control group. Each group examined the expression of transcription factor NFκB, Interferon α, reverse transcriptase inhibitors (p21), and the amount of HIV-1 p24 antigen. There were increasingly significant differences in the expression of the trancription factor of NFκB, p21, and HIV-1 p24 antigen,as well as mRNA transcription of interferon α2 between treatment and controlgroup. By decreasing p24 antigen showed that HBO exposure was able to suppress HIV-1 replication. The exposure to hyperbaric oxygen at the pressure of 2.4 ATAand 98% oxygen wasable to produce ROS and RNS molecules, which play a role in cellular adaptive responses through increasing the expression of nfĸb, p21 and mRNA of interferon α2 plays a role in inhibition mechanism of HIV-1 replication in cells.


Blood ◽  
1992 ◽  
Vol 79 (10) ◽  
pp. 2680-2687 ◽  
Author(s):  
G Zauli ◽  
MC Re ◽  
B Davis ◽  
L Sen ◽  
G Visani ◽  
...  

Abstract In this report the role played by human immunodeficiency virus type-1 (HIV-1) in the pathogenesis of HIV-1-related thrombocytopenia was investigated. CD34+ hematopoietic stem/progenitor cells were purified from the bone marrow (BM) of HIV-1(+) thrombocytopenic patients, HIV- 1(+) nonthrombocytopenic individuals, HIV-1(-) patients with immune thrombocytopenic purpura, and HIV-1(-) normal donors. CD34+ cells from HIV-1(+) thrombocytopenic individuals alone showed a reduced capacity to give rise to megakaryocytic colonies (CFU-Meg) and also a progressive and significant decline in cell number when placed in liquid culture containing recombinant human interleukin-3 (rIL-3). This decline involved not only megakaryocyte but also erythroid and granulocyte/macrophage progenitors. The defects in megakaryocyte colony formation and CD34+ cell growth did not result from a productive HIV-1 infection of CD34+ cells. Moreover, HIV-1 DNA was absent from CD34+ cells in 10 of 12 thrombocytopenic patients examined. On the other hand, the decreased survival/proliferation of CD34+ cells in liquid culture, within the HIV-1(+) thrombocytopenic patients, was correlated with the presence of HIV-1 p24 antigen in BM plasma. These results demonstrate an impairment of CD34+ cells in HIV-1(+) individuals presenting thrombocytopenia as the only hematologic manifestation. Furthermore, these findings suggest that increased viral replication in the BM microenvironment may cause this impairment and possibly contributes to HIV-induced thrombocytopenia.


2008 ◽  
Vol 102 (1) ◽  
pp. 26-30 ◽  
Author(s):  
S. RUSCONI ◽  
A. RIVA ◽  
L. MERONI ◽  
G. ZEHENDER ◽  
F. COCCHI ◽  
...  
Keyword(s):  
Anti Hiv ◽  

1996 ◽  
Vol 7 (4) ◽  
pp. 179-183 ◽  
Author(s):  
M.D. Wigg ◽  
A.A. Al-Jabri ◽  
S.S. Costa ◽  
E. Race ◽  
B. Bodo ◽  
...  

Aqueous (PA1) and methanolic extracts (PA2a–d; PA3) from the tropical tree Persea americana Mill. (Lauraceae), were evaluated for their cellular toxicity and anti-HIV-1 activity both in virustatic and virucidal assays. With the exception of PA3 and PA2d, all extracts showed anti-HIV-1 activity at concentrations which were not toxic for the H9 indicator cells. From the methanol insoluble extract (PA2) four different fractions (PA2a–d) were obtained using reverse-phase column chromatography, and two of the fractions (b and c) showed detectable virucidal effect. One fraction (PA2a) showed virustatic effects inhibiting HIV syncytium formation and viral p24 antigen formation at concentrations which were not toxic for the indicator cells. The results demonstrate for the first time that extracts from P. americana leaves have moderate anti-HIV-1 activity in vitro.


2013 ◽  
Vol 87 (4) ◽  
pp. 415-423 ◽  
Author(s):  
Takako SANO ◽  
Makiko KONDO ◽  
Yukihiro YOSHIMURA ◽  
Natsuo TACHIKAWA ◽  
Hiroko SAGARA ◽  
...  

Author(s):  
Ni Putu Ermi Hikmawanti ◽  
Prihartini Widiyanti ◽  
Bambang Prajogo EW

Anti retroviral drugs for HIV has problems with uncomfortable side effects and that endanger the lives of HIV sufferers. Several herbs have been empirically proven to have an effect on HIV eradication through inhibition of reverse transcriptase. One of such antiviral herbs is Justicia gendarussa (J. gendarussa). The aim of research is to evaluate anti-HIV activity of 70% fractionated-ethanol extract (with releasing alkaloids) and 70% ethanol extract (without releasing alkaloids) of J. gendarussa leaves on in vitro HIV-infected of MOLT-4 cells. The effect of the extracts in inhibiting viral replication and fusion process on acute HIV infection was identi- fied through syncytia formation assay. Effect of the extracts on HIV p24 antigen was evaluated using HIV-1 p24 ELISA kit. It was found that 70% fractionated-ethanol extract and 70% ethanol extract of J. gendarussa leaves significantly inhibited of HIV replication by inhibition of syncytia formation, where the 50% effective concen- tration (EC50) values of the 70% fractionated-ethanol extract and 70% ethanol extract are 70.5 μg/mL and 228.7 μg/mL, respec- tively. Both of the extracts were also significantly inhibited HIV replication by decreasing HIV p24 antigen level where the EC 50 values of the 70% fractionated-ethanol extract and 70% ethanol extract are 88.8 μg/mL and 540.7 μg/mL, respectively. Moreover, it was found that 70% fractionated-ethanol extract of J. gendarussa leaves has anti-HIV activity since its EC50 values less than 100 μg/mL. It was concluded that J. gendarussa could be potentially developed into a phytopharmaceutical product due to its anti-HIV activity.


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