• Title/Summary/Keyword: Human Immunodeficiency Virus

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Anti-HIV and Antihepatotoxic Constituents from Medicinal Plant Resources

  • Park, Jong-Cheol;Park, Ju-Gwon;Hur, Jong-Moon;Hwang, Young-Hee;Jung, Deuk-Young
    • Proceedings of the Plant Resources Society of Korea Conference
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    • 2001.11a
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    • pp.68-73
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    • 2001
  • Medicinal plants were screened for the inhibitory effects on human immunodeficiency virus type 1 pretense Of the extracts tested, the strong inhibitory effects were observed in the acetone extracts of the pericarp of Camellia japonica. Camelliatannin H from the pericarp of C. japonica showed a potent inhibitory activity on HIV- 1 pretense. Effects of the extract and compound from leaves of Zanthoxylum piperitum on the enzyme activities were investigated in the liver of bromobenzene-treated rats. The methanol extract and protocatechuic acid isolated from Z. piperitum reduced the activity of aniline hydroxylase that increased by bromobenzene, while did not affect the activities of aminopyrin N-demethylase and glutathione S-transferase The extract and protocatechuic acid recovered significantly the activity of epoxide hydrolase decreased by bromobenzene.

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Inhibitory effects of Korean plant resources on human immunodeficiency virus type 1 protease activity

  • Park, Jong-Cheol
    • Advances in Traditional Medicine
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    • v.3 no.1
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    • pp.1-7
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    • 2003
  • Some Korean plants were found to inhibit HIV-1 protease activity. The extracts of Acanthopanax koreanum (stem bark), Berchemia berchemiaefolia (stem), Berchemia berchemiaefolia (bark), Distylium racemosum (leaves), Distylium racemosum (stem), Lindera erythrocarpa (leaves), Physalis alkekengi var. francheti (root), Platycarya strobilacea (stem), Rodiola rosea (root), Rosa davurica (stem), Syringa dilatata (leaves), Viburnum awabuki (stem) and Viburnum awabuki (leaves) showed significant inhibitory effect against HIV-1 protease. Camelliatannin H from Camellia japonica and uvaol from Cratagus pinatrifida were potent active inhibitors of HIV-1 protease with $IC_{50}$ values of $0.9\;{\mu}M$ and $5.5\;{\mu}M$, respectively. The cure and prevention of AIDS have been a global challenge since it was discovered in the ealy 1980s. However, the development of anti-HIV agent that can effectively treat or prevent this disease are still demanded.

Chronic Inflammatory Demyelinating Polyneuropathy Associated with HIV-Infection (사람면역결핍바이러스 감염과 연관된 만성염증탈수초다발신경병증)

  • Huh, So-Young;Ahn, Bo-Young;Oh, Se-Jin;Park, Yeong-Eun;Kim, Dae-Seong
    • Annals of Clinical Neurophysiology
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    • v.13 no.2
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    • pp.97-100
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    • 2011
  • Chronic inflammatory demyelinating polyneuropathy (CIDP) is an acquired immune-mediated polyneuropathy. Corticosteroids, intravenous immunoglobulin (IVIG) and plasmapheresis have been reported to be effective treatment. Rarely, CIDP can occur in the patients with HIV infection. The clinical features and electrophysiological findings of CIDP are known to be similar in patients with and without HIV infection. We report a 30-year-old male with HIV infection associated CIDP who improved after the administration of intravenous immunoglobulin and long term oral prednisone.

Antiretroviral Therapy 2006: Pharmacology, Applications, and Special Situations

  • Samuel, Rafik;Bettiker, Robert;Suh, Byung-Se
    • Archives of Pharmacal Research
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    • v.29 no.6
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    • pp.431-458
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    • 2006
  • As we approach the completion of the first 25 years of the human immunodeficiency virus(HIV) epidemic, there have been dramatic improvements in the care of patients with HIV infection. These have prolonged life and decreased morbidity. There are twenty currently available antiretrovirals approved in the United States for the treatment of this infection. The medications, including their pharmacokinetic properties, side effects, and dosing are reviewed. In addition, the current approach to the use of these medicines is discussed. We have included a section addressing common comorbid conditions including hepatitis B and C along with tuberculosis.

Anti-Human Immunodeficiency Virus-Type 1 Activity of Constituents from Juglans mandshurica

  • Min, Byung-Sun;Lee, Hyeong-Kyu;Lee, Sang-Myung;Kim, Young-Ho;Bae, Ki-Hwan;Otake, Toru;Nakamura, Norio;Hattori, Masao
    • Archives of Pharmacal Research
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    • v.25 no.4
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    • pp.441-445
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    • 2002
  • Three naphthalene glycosides (1-3), four flavonoids (4-7), and two galloyl glycosides (8-9) were isolated from the stem-bark of Juglans mandshurica (Juglandaceae). Their structures were determined by chemical and spectral means, including to 2D-NMR (COSY, HMQC, and HMBC) experiments. Amongst the isolated compounds, taxifolin (4) showed the most potent HIV-induced cytopethic activity against MT-4 cells with complete inhibitory concentration ($IC_{100}$) value of $25{\;}{\mu\textrm{g}}/ml$ and maximum cytotoxic concentration ($CC_{100}$) value of above $100{\;}{\mu\textrm{g}}/ml$. However, naphthalene glycosides (1-3), flavonoids (5-7)), and galloyl tannins (8-9) were inactive against anti-HIV-1 activity.

Baicalein and Baicalin as Inhibitors of HIV-1 Integrase (면역결핍바이러스 인테그라제 억제제로서 Baicalein과 Baicalin)

  • 이민전;김미라;이용섭;신차균
    • YAKHAK HOEJI
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    • v.47 no.1
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    • pp.46-51
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    • 2003
  • Baicalein and baicalin are flavonoid compounds isolated from medicinal herb Scutellaria baicalensis Georgi (Labiatae) and have been known to possess antiviral activities. In the present study, we investigated the in vitro effects of baicalein and baicalin on the three distinctive enzymatic activities of the human immunodeficiency virus type-1 (HIV-1) integrase-endonucleolytic, integration, and disintegration activities. Both compounds inhibited the three enzymatic activities in a dose-dependent manner. The 50% inhibitory concentrations of baicalein and baicalin for endonucleolytic activities of HIV-1 integrase were 4.4$\pm$3.3 and 25.9$\pm$4.0$\mu$M, respectively. In general, baicalein exhibited nearly 6- to 10-fold stronger inhibition than baicalin for the three enzymatic activities. These data demonstrate that baicalein or baicalin can be used as a leading compound to develop anti-AIDS chemotherapeutic agents targeting to the HIV-1 integrase.

Antigen Delivery Systems: Past, Present, and Future

  • Hyun-Jeong Ko;Yeon-Jeong Kim
    • Biomolecules & Therapeutics
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    • v.31 no.4
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    • pp.370-387
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    • 2023
  • The COVID-19 pandemic has increased demand for safe and effective vaccines. Research to develop vaccines against diseases including Middle East respiratory syndrome, Ebolavirus, human immunodeficiency virus, and various cancers would also contribute to global well-being. For successful vaccine development, the advancement of technologies such as antigen (Ag) screening, Ag delivery systems and adjuvants, and manufacturing processes is essential. Ag delivery systems are required not only to deliver a sufficient amount of Ag for vaccination, but also to enhance immune response. In addition, Ag types and their delivery systems determine the manufacturing processes of the vaccine product. Here, we analyze the characteristics of various Ag delivery systems: plasmids, viral vectors, bacterial vectors, nanoparticles, self-assembled particles, natural and artificial cells, and extracellular vesicles. This review provides insight into the current vaccine landscape and highlights promising avenues of research for the development and improvement of Ag delivery systems.

THE REVIEW OF TRANSMISSION OF INFECTIOUS DISEASE IN HUMAN TISSUE TRANSPLANTATION: PART I ALLOGENIC BONE (동종조직이식술 시 전염성질환의 이환가능성에 대한 고찰 I : 동종골조직)

  • Lee, Eun-Young;Kim, Kyoung-Won;Um, In-Woong
    • Maxillofacial Plastic and Reconstructive Surgery
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    • v.28 no.4
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    • pp.365-370
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    • 2006
  • Viral, bacterial and fungal infections can be transmitted via allografts such as bone, skin, cornea and cardiovascular tissues. Allogenic bone grafts have possibility of transmission of hepatitis C, human immunodeficiency virus (HIV-1), human T-Cell leukaemia virus (HTLV), tuberculosis and other bacterias. The tissue bank should have a policy for obtaining information from the patient's medical report as to whether the donor had risk factors for infectious diseases. Over the past several years, improvements in donor screening criteria, such as excluding potential donor with "high risk" for HIV-1 and hepatitis infection, and donor blood testing result in the reduction of transmission of these diseases. During tissue processing, many allografts are exposed to antibiotics, disinfectants and terminal sterilization such as irradiation, which further reduce or remove the risk of transmitting diseases. Because the effectiveness of some tissue grafts such as, fresh frozen osteochondral grafts, depends on cellular viability, not all can be subjected to sterilization and processing steps and, therefore, the risk of transmission of infectious disease remains. This article is review of the transmission of considering infectious disease in allogenic bone transplantation and the processing steps of reducing the risk. The risk of viral transmission in allografts can be reduced in several standards. The most important are donor-screening tests and the removal of blood and soft tissues by processing steps under the aseptic environment. In conclusion, final sterilizations including the irradiation, can be establish the safety of allografts.

Effectiveness of Intravenous Isoniazid and Ethambutol Administration in Patients with Tuberculosis Meningoencephalitis and HIV Infection

  • Butov, Dmytro;Feshchenko, Yurii;Kuzhko, Mykhailo;Gumenuik, Mykola;Yurko, Kateryna;Grygorova, Alina;Tkachenko, Anton;Nekrasova, Natalia;Tlustova, Tetiana;Kikinchuk, Vasyl;Peshenko, Alexandr;Butova, Tetiana
    • Tuberculosis and Respiratory Diseases
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    • v.83 no.1
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    • pp.96-103
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    • 2020
  • Background: The aim of this study was to investigate the effectiveness of intravenous isoniazid (H) and ethambutol (E) administered in patients with new sputum positive drug-susceptible pulmonary tuberculosis (TB) with tuberculous meningoencephalitis (TM) and human immunodeficiency virus (HIV) co-infection in the intensive phase of treatment. Methods: Fifty-four patients with TB/TM and HIV co-infection were enrolled for this study. Group 1 comprised of 23 patients treated with E and H intravenously, while rifampicin and pyrazinamide were prescribed orally. Group 2 consisted of 31 patients treated with the first-line anti-TB drugs orally. The concentrations of H and E in blood serum were detected using a chromatographic method. Results: A significant improvement in the clinical symptoms and X-ray signs in patients treated intravenously with H and E was observed and compared to group 2. The sputum Mycobacterium tuberculosis positivity was observed during the second month of the treatment in 25.0% of patients from group 1 and 76.1% of the patients from the control group (p=0.003). In addition, nine patients (39.1%) died up to 6 months when H and E were prescribed intravenously compared with 22 (70.9%) in group 2 (p=0.023). Conclusion: In TB/TM with HIV, the intravenous H and E treatment was more effective than oral H and E treatment at 2 months of intensive treatment in sputum conversion as well as in clinical improvement, accompanied by significantly higher mean serum concentrations. In addition, the mortality rate was lower in intravenous H and E treatment compared to oral treatment.

Development of quality of life with WHOQOL-HIV BREF Korean version among HIV patients in Korea (후천성면역결핍환자의 삶의 질 측정을 위한 한국판 WHOQOL-HIV BREF 개발)

  • Lee, Won Kee;Kim, Shin-Woo;Kim, Hye-In;Chang, Hyun-Ha;Lee, Jong-Myung;Kim, Yoon-Joo;Lee, Mi-Young
    • Journal of the Korean Data and Information Science Society
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    • v.25 no.2
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    • pp.337-347
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    • 2014
  • There is no known publication about assessment of quality of life (QOL) in Korean HIV patients. We aimed to assess the QOL of HIV patients. We developed Korean version of the WHOQOL-HIV BREF (short forms of WHOQOL-HIV, 31 questions with 6 domains). Survey data from 220 HIV-positive adults were obtained in 14 centers in South Korea. Male were dominant (202/220, 91.8%). Mean age was $40.6{\pm}12.1$. Mean CD4+ T-cell count was $414.9{\pm}226.6/ml$. Overall of WHOQOL-HIV BREF were $53.2{\pm}14.9$ (perfect score=100) (Cronbach's ${\alpha}$ = 0.942). It is similar score comparing to another country (Portugal: 54.75/100, measured by WHOQOL-HIV). Correlations of WHOQOL-HIV BREF score with patients' subjective QOL and with subjective satisfaction were 0.747 (p <0.01) and 0.651 (p <0.01), respectively. WHOQOL-HIV BREF have internal reliability. There is in need of monitoring for QOL of HIV patients in the clinical practice and trials. This survey tool could be used to assess the effect of intervention. Additionally, comparison across countries would be possible and promising.