Gene/Protein Disease Symptom Drug Enzyme Compound
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Query: UMLS:C0018681 (headache)
 56,091 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

A 33-year-old Japanese man, with a history of recurrent skin cryptococcosis, was admitted complaining of fever and severe headache for 3 weeks. He had no known risk factors for human immunodeficiency virus (HIV) infection. Cerebrospinal fluid examination revealed an elevated opening pressure of 32 cm H2O, cell counts of 884/mm3, a total protein value of 184 mg/dl, a glucose level of 16 mg/dl, and demonstrated a positive India ink stain for fungus. Cultures grew Cryptococcus neoformans. Hematological studies showed a persistently low CD4+ cell count (30/mm3) and a low CD4/CD8 ratio of 0.1. He has been repeatedly seronegative (ELISA and Western blot) for HIV-1 and HIV-2. He responded to fluconazole, and was given itraconazole as secondary prophylaxis because of persistent low CD4 counts. To our knowledge this is the first patient with idiopathic CD4+ T lymphocytopenia associated with CNS cryptococcosis in Japan. CD4 counts should be part of the initial work up for patients with CNS cryptococcosis.
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PMID:[CNS cryptococcosis with idiopathic CD4+ T lymphocytopenia]. 1088 36

Abacavir (formerly 1592U89) is a carbocyclic nucleoside analog with potent anti-human immunodeficiency virus (anti-HIV) activity when administered alone or in combination with other antiretroviral agents. The population pharmacokinetics and pharmacodynamics of abacavir were investigated in 41 HIV type 1 (HIV-1)-infected, antiretroviral naive adults with baseline CD4(+) cell counts of >/=100/mm(3) and plasma HIV-1 RNA levels of >30,000 copies/ml. Data for analysis were obtained from patients who received randomized, blinded monotherapy with abacavir at 100, 300, or 600 mg twice-daily (BID) for up to 12 weeks. Plasma abacavir concentrations from sparse sampling were analyzed by standard population pharmacokinetic methods, and the effects of dose, combination therapy, gender, weight, and age on parameter estimates were investigated. Bayesian pharmacokinetic parameter estimates were calculated to determine the peak concentration of abacavir in plasma (C(max)) and the area under the concentration-time curve from time zero to infinity (AUC(0-infinity)) for individual subjects. The pharmacokinetics of abacavir were dose proportional over the 100- to 600-mg dose range and were unaffected by any covariates. No significant correlations were observed between the incidence of the five most common adverse events (headache, nausea, diarrhea, vomiting, and malaise or fatigue) and AUC(0-infinity). A significant correlation was observed between C(max) and nausea by categorical analysis (P = 0.019), but this was of borderline significance by logistic regression (odds ratio, 1.45; 95% confidence interval, 0.95 to 2.32). The log(10) time-averaged AUC(0-infinity) minus baseline (AAUCMB) values for HIV-1 RNA and CD4(+) cell count correlated significantly with C(max) and AUC(0-infinity), but with better model fits for AUC(0-infinity). The increase in AAUCMB values for CD4(+) cell count plateaued early for drug exposures that were associated with little change in AAUCMB values for plasma HIV-1 RNA. There was less than a 0.4 log(10) difference over 12 weeks in the HIV-1 RNA levels with the doubling of the abacavir AUC(0-infinity) from 300 to 600 mg BID dosing. In conclusion, pharmacodynamic modeling supports the selection of abacavir 300 mg twice-daily dosing.
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PMID:Population pharmacokinetics and pharmacodynamic modeling of abacavir (1592U89) from a dose-ranging, double-blind, randomized monotherapy trial with human immunodeficiency virus-infected subjects. 1089 75

We report on a 48-year-old man with idiopathic hypertrophic cranial pachymeningitis (IHCP) manifesting headache, facial pain, and tongue pain with unilateral atrophy, dysarthria, and dysphagia. Although steroid therapy ameliorated these symptoms, they recurred after he developed steroid-induced diabetes mellitus. We treated the patient by lymphocytapheresis (LCP), which resulted in an improvement of his symptoms, a reduction in the CD4 lymphocyte population, a reduction of the CD4/CD8 ratio, and a reduced thickening of the dura mater that lasted for more than 14 months. Results presented here suggest that LCP can be effective in the treatment of IHCP.
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PMID:Long-term improvement of idiopathic hypertrophic cranial pachymeningitis by lymphocytapheresis. 1097 80

The nucleoside reverse transcriptase inhibitor 3TC (lamivudine) appears to induce unusually prolonged HIV suppression when used in combination with AZT, according to the results of four randomized clinical trials. The studies showed that 3TC and AZT had similar antiviral effects when used alone. However, investigators observed a substantial, prolonged increase in CD4 counts and a significant decrease in HIV RNA when the drugs were administered simultaneously. These benefits persisted in all study groups for the 24-week study period, and in several for the six-month follow-up period as well. The combination was well-tolerated by nearly 1000 AZT-naive and AZT-experienced subjects enrolled in these trials, with the most common adverse effects being nausea, vomiting and headaches. A possible explanation for the antiviral effect is suggested by the mutation at HIV codon 184 that is frequently observed in virions exposed to 3TC for extended periods of time. In vitro studies have shown that this mutation confers 3TC resistance. It may also counteract other mutations that would normally lead to AZT resistance, therefore enabling virions exposed to both drugs to remain effectively susceptible to AZT.
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PMID:Combination 3TC/AZT therapy shows promise. 1136 92

It was reported at the 1995 Second National Retrovirus Conference that AIDS has now surpassed unintentional injury as the leading cause of death for male Americans between the ages of 25 to 44, and for women, AIDS is fourth behind unintentional injury. A study of multidrug resistant tuberculosis that showed improved survival rates as long as appropriate therapy began within four weeks of diagnosis was also presented. The current recommendation is to consider the PPD skin test positive in persons with HIV if the bump that appears is over five millimeters in diameter. A new ganciclovir implant study demonstrated the implant's effectiveness in preventing CMV disease progression with low rates of complications, suggesting implants should probably replace intravenous ganciclovir as maintenance therapy. Another study demonstrated the effectiveness of cidofovir as a treatment for CMV infection, indicating that cidofovir was appropriate as a salvage therapy for those failing ganciclovir and foscarnet. In vitro studies involving Taxol and Kaposi's sarcoma (KS) show partial responses (55 percent), and some disease stabilization (40 percent). Four of five patients with pulmonary KS responded with clearance of tumor lesions. The first randomized trial involving Loviride with zidovudine has shown a sustained increase in CD4 cells with headache, nausea, and diarrhea as the most common side effects. Preliminary assessments reveal a reduction in viral load using the combination as opposed to monotherapy. Additional Loviride combination trials are being planned in Europe.
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PMID:Second National Retrovirus conference: a further report. 1136 59

Agouron Pharmaceuticals is making their protease inhibitor, nelfinavir mesylate (Viracept), available in an expanded access program for people who are unable to use any of the three approved protease inhibitors due to intolerance, contraindication, or prior failure with those drugs. They must also have a CD4 count below 50. Viracept has already been studied in 500 patients, with the most frequent side effects being mild to moderate diarrhea, headache, and fatigue.
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PMID:New protease inhibitor available through expanded access. 1136 81

Glaxo Wellcome is offering an expanded access program for abacavir (Ziagen, formerly 1592) to HIV-positive patients who are not benefiting from their current combination therapy. In a dramatic departure from the usual entry criteria, the abacavir eligibility criteria require no specific CD4 cell count or viral load. To qualify, volunteers must be on a failing regimen, unable to tolerate standard therapies, and a physician must verify that another drug combination would not be viable. Patients are urged to switch to a regimen of at least two new drugs based on U.S. government treatment guidelines. Similar programs are available for the anti-HIV drugs efavirenz (Sustiva) and adefovir dipivoxil (Preveon). People using abacavir, a nucleoside analog, may experience side effects such as headache, nausea, and vomiting. If a hypersensitivity reaction develops, patients must stop the treatment. Taking the drug after experiencing an adverse reaction can be life threatening.
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PMID:Glaxo opens broad expanded access program for abacavir (Ziagen). 1136 71

A new study to be presented at the 12th World AIDS Conference demonstrates that IL-2 dramatically restores immune function in people with AIDS. The study group included patients with fewer than 200 CD4-cells and a history of severe AIDS-related complications including CMV retinitis, PCP, wasting syndrome, KS, and Cryptococcal meningitis. In the study, CD4 counts rose 96 percent when IL-2 was added to protease inhibitor therapy. The increases were sustained, and naive cells increased as well. Most common side effects included fever, fatigue, sinus congestion, and headache; most side effects stopped within 24 hours of completing the treatment cycle. The findings represent new hope for people whose immune systems are substantially compromised. Contact information is provided.
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PMID:New data on IL-2. 1136 33

The efficacy and safety of recombinant human interferon gamma (rIFN-gamma) in the reduction of opportunistic disease in patients with advanced HIV-1 infection are assessed. A 12-month double-blind, placebo-controlled, multicenter, Phase III trial of rIFN-gamma in HIV-positive patients with CD4 < 100 x 10(9)/liter on stable antiretroviral therapy. Eighty-four patients were allocated treatment on a 1:1 basis to rIFN-gamma or placebo. Patients received rIFN-gamma 0.05 mg/m(2) or 0.9% saline subcutaneously three times weekly for 48 weeks (optional extension to 18 months). The primary end point was the incidence of opportunist infections (CDC categories B/C). Secondary end points included mortality, immunological, and virological parameters. Patients on placebo had a mean of 3.45 opportunist infections (OIs) in the first 48 weeks. Patients treated with rIFN-gamma had a mean of 1.71 OIs (p = 0.04). However, the model showed overdispersion and the inclusion of a dispersion factor raised the p value to 0.13. rIFN-gamma appeared to have a particular effect on the incidence of Candida, herpes simplex, and cytomegalovirus infections. Three-year survival in the rIFN-gamma arm was 28% compared to 18% in the placebo group (not significant). rIFN-gamma-associated side-effects of headache, fatigue, rigors, influenza-like symptoms, depression, myalgia, and granulocytopenia were reversible. There was no evidence for HIV activation. Although not significant, the trend towards decreased opportunistic infections and increased survival warrants consideration of further trials of rIFN-gamma. The study gives additional information on the safety profile of this cytokine.
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PMID:A phase III study of recombinant human interferon gamma to prevent opportunistic infections in advanced HIV disease. 1142 20

Although influenza vaccination is recommended for individuals with HIV infection, there are no data indicating an increased incidence or severity of influenza in this population. We sought to describe the clinical manifestations and morbidity of influenza in HIV-infected patients. All cases of influenza occurring in HIV-infected individuals over 3 years at a large county hospital were reviewed. Forty-three cases of influenza were diagnosed. Most patients presented with typical signs and symptoms of influenza, including cough (90%), myalgias (64%), and fever (52%). Sore throat and headache occurred in less than half of patients. The mean CD4 cell count and HIV viral load in patients with influenza was 340 cells/mm(3) and 3.34 log copies/ml, respectively. No significant differences in CD4 counts or viral loads were noted in patients with pneumonia (n=7) compared with patients without pneumonia (n=36), P>0.5. Six patients were hospitalized. One patient each had encephalitis and renal failure, although the relationship to influenza was not clear. No new or unusual clinical manifestations were observed. The rate of pulmonary complications was similar to other studies in HIV-negative patients; however, the hospitalization rate was higher than commonly seen in HIV-negative individuals.
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PMID:Clinical manifestations of influenza in HIV-infected individuals. 1156 31


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