Search PubMed⌕ Search

SEARCH · Search PubMed

Results for “Combination therapy”

Search indexed PubMed citations on genomics, clinical trials, systematic reviews and public health. Explore titles, authors and supplied subject terms, then open the PubMed record.

Quote a phrase for an exact phrase match. Source license links do not imply unrestricted reuse.

At least 109 records · Page 6Linked to original sources

Somatostatin receptor gene therapy combined with targeted therapy with radiolabeled octreotide: a new treatment for liver metastases.

OBJECTIVE: To evaluate the effect of peptide receptor radionuclide therapy (PRRT) on somatostatin receptor (SSR)-transfected colon carcinoma cells in a rat liver metastases model. SUMMARY BACKGROUND DATA: Previously the authors have shown highly effective therapy with PRRT of SSR-positive tumors. This treatment is SSR-mediated; successful treatment is seen only in SSR-positive tumors, with no effect in SSR-negative tumors. As many tumors lack this receptor, the idea arose to transfect SSR-negative tumor cells with an SSR gene to apply PRRT on these SSR-transfected tumor cells. METHODS: CC531 colon carcinoma cells (SSR-negative) were transfected in vitro with an SSR (subtype 2) gene (CC2B). Liver metastases were produced after intraportal injection of these tumor cells in rats. On day 7, animals were treated with 185 or 370 MBq [177 Lu-DOTA0, Tyr3 ]octreotate. After 21 days rats were killed and liver metastases were counted. RESULTS: Treatment with 370 MBq [177 Lu-DOTA0, Tyr3 ]octreotate showed a significant antitumor response in rats with CC2B liver metastases (SSR-positive) in comparison with controls. No significant antitumor effect was seen in PRRT-treated rats with CC531 liver metastases (SSR-negative). Also, a dose-dependent tumor response was seen in rats with CC2B liver metastases treated with 185 MBq [ 177Lu-DOTA0, Tyr3 ]octreotate compared with controls. In addition, rats with mixed liver metastases treated with 185 MBq [177 Lu-DOTA0, Tyr3 ]octreotate had significantly fewer metastases compared with controls. CONCLUSIONS: The authors showed an impressive antitumor effect of SSR (subtype 2)-transfected colon carcinoma cells with PRRT in a rat liver metastasis model. Moreover, rats with mixed liver metastases had significantly fewer liver metastases compared with control rats, which may be due to a radiologic bystander effect of [177 Lu-DOTA0, Tyr3 ]octreotate. This phenomenon is beneficial in the concept of in vivo gene therapy.

Adenocarcinoma↗

[Intra-arterial therapy in the combination therapy of acute pancreatitis].

The article discusses the results of endovascular therapy (ET) in 92 patients with various forms of acute pancreatitis. ET was conducted without operative treatment, in preparation for operation, and in the postoperative period. Ten patients were subjected to direct hypothermia by intraarterial infusion of cooled solutions. Bi-arterial catheterization of the aortic branches was performed for higher efficacy of the management of acute pancreatitis and prevention of its complications. The inclusion of ET in the complex of therapeutic measures for acute pancreatitis led to a fall of pancreonecrosis lethality from 54% to 25%.

Acute Disease↗

Long-pulsed dye laser-mediated photodynamic therapy combined with topical therapy for mild to severe comedonal, inflammatory, or cystic acne.

BACKGROUND: Acne patients who fail to respond to conventional treatments have been treated with isotretinoin, an effective treatment coming under strict regulation due to the risk of significant side effects. Photodynamic therapy (PDT) may be a viable alternative treatment for recalcitrant acne of various types and levels of severity. OBJECTIVE: To determine the safety and efficacy of combination PDT with topical 5-aminolevulinic acid (ALA) and activation by long-pulsed, pulsed dye laser (LP PDL, 595 nm) energy with topical therapy in patients with mild to severe acne. METHODS: A prospective, controlled pilot, proof-of-principle study of 19 consecutive patients (aged 16-47 years, Fitzpatrick skin types I-VI) with mild to severe cystic, inflammatory, or comedonal acne of the face was conducted. All patients had failed conventional therapy, including oral antibiotics, topical treatments, hormonal therapy, laser procedures (without ALA), and/or oral isotretinoin. Fifteen patients were treated with ALA PDT and 4 patients served as controls; all were continued on topical medications. Patients undergoing PDT were initially randomized to receive either blue light or laser energy. Because recrudescence occurred in 1 patient while undergoing multiple treatments with ALA and blue light, all subsequent patients were treated with ALA and laser energy. The total number of patients treated with LP PDL-mediated ALA PDT was 14. ALA was applied for a short 45-minute incubation followed by 1 minimally overlapping pass with the LP PDL (595 nm, 7.0-7.5 J/cm2 fluence, 10-ms pulse duration, 10-mm spot size, and dynamic cooling spray of 30 ms with a 30-ms delay). Patients treated with conventional therapy (oral antibiotics, oral contraceptives, and topical medications) or laser energy without ALA PDT served as control groups. Patients were followed monthly for up to 13 months. RESULTS: Complete clearance was achieved in 100% (14 out of 14) patients in the LP PDL PDT-treated group. A mean of 2.9 treatments (range 1-6; 2.0-3.7, 95% CI; n=14) was required to achieve complete clearance for a mean follow-up time of 6.4 months (range 1-13; 3.8-8.9 95% CI; n=14). The patient mean percent lesional clearance rate per treatment was 77% (64%-90%, 95% CI; n=14). Improvement in acne lesions became apparent within 1 to 2 weeks after the first treatment. Clearance in the LP PDL PDT group was superior to control groups. In the LP PDL-only control group (n=2), the patient mean percent lesional clearance rate per treatment was 32% without complete clearance after 3 to 4 treatments. In the oral antibiotics, oral contraceptives, and topicals control group (n=2), the clearance rate per treatment was 20%, the mean clearance rate per month was 4%, and complete clearance was not achieved after 6 to 10 months. In the LP PDL-mediated PDT group, treatments were well-tolerated with minimal erythema lasting 1 to 2 days. No cases of crusting, blistering, purpura, scarring, or dyspigmentation occurred. A reduction in the erythema in erythematous acne scars was observed. CONCLUSION: For teenage to adult patients with recalcitrant comedonal, inflammatory, or cystic acne of various degrees of severity, ALA PDT with activation by LP PDL appears to be a safe and effective treatment with minimal side effects. LP PDL-mediated PDT may serve as an important alternative to isotretinoin. Cosmetically well-accepted, LP PDL PDT combined with topical therapy is the first PDT modality to achieve complete clearance with long-term follow-up as compared to controls.

Acne Vulgaris↗

Recovery of both acute massive pulmonary hemorrhage and acute renal failure in a systemic lupus erythematosus patient with lupus anticoagulant by the combined therapy of plasmapheresis plus cyclophosphamide.

Acute massive pulmonary hemorrhage (AMPH) is a rare and highly fatal complication in systemic lupus erythematosus (SLE). We report here survival in a case of AMPH in a SLE patient with both rapidly progressive glomerulonephritis and lupus anticoagulant. The AMPH occurred while the nephritis was refractory to 2 courses of pulse methylprednisolone therapy. After combined therapy with plasmapheresis plus cyclophosphamide, circulating immune complex levels declined, AMPH recovered, and serum creatinine levels returned to normal. In conclusion, the combined therapy of plasmapheresis plus cyclophosphamide should be considered for treating AMPH especially in those SLE patients with rapidly progressive glomerulonephritis.

Acute Disease↗

Toward more effective antifungal therapy: the prospects of combination therapy.

The availability of new antifungal agents with unique mechanisms of action and improved tolerability has widened the possibilities for the use of combination antifungal therapy for difficult-to-treat opportunistic mycoses. However, the use of this therapy is largely governed by empiricism, especially in patients with invasive mould infections, for whom there is a tremendous need to improve outcomes. Because of the difficulties associated with the design and conduct of clinical trials of combination antifungal therapy for opportunistic mycoses, the majority of the studies evaluating antifungal combinations are still performed in the laboratory or using animal models of infection. However, the methods used to assess combined antifungal effects in vitro and in animals are poorly standardized, and there is little evidence that data generated from these studies can be translated in treating human mycotic infections. Despite the empiricism of combination antifungal therapy, certain principles help guide the use and study of these regimens.

Antifungal Agents↗

Cancer gene therapy: combination with radiation therapy and the role of bystander cell killing in the anti-tumor effect.

Current anti-cancer modalities such as surgery, chemo- and radiation therapies have only limited success in cancer treatment. Gene therapy is a promising new tool to improve outcomes. In this review, first we summarize the various strategies to kill tumor cells, and then focus on the bystander effect of gene therapy. A variety of strategies, such as gene-directed enzyme pro-drug therapy, activation of an anti-tumor immune attack, application of replication-competent and oncolytic viral vectors, tumor-specific as well as radiation- and hypoxiainduced gene expression, might be applied to target tumor cells. We put special emphasis on the combination of these approaches with local tumor irradiation. Using the available vector systems, only a small portion of cancer cells contains the therapeutic genes under clinical situations. However, cells directly targeted by gene therapy will transfer death signals to neighboring cancer cells. This bystander cell killing improves the efficiency of cancer gene therapy. Death signals are delivered by cell-to-cell communication through gap junction intercellular contacts, release of toxic metabolites into the neighborhood or to larger distances, phagocytosis of apoptotic bodies, and the activation of the immune system. Bystander cell killing can be enhanced by the introduction of gap junction proteins into cells, by further activating the immune system with immune-stimulatory molecules, or by introducing genes that help the transfer of cytotoxic genes and/or metabolites into bystander cells. In conclusion, although bystander cell killing can improve therapeutic effects, there should be additional developments in cancer gene therapy for a more efficient clinical application.

Animals↗

[Combined therapy for the chronic pelvic pain syndrome].

OBJECTIVE: To study the clinical diagnosis and treatment of the chronic pelvic pain syndrome (CPPS). METHODS: According to National Institute Health (NIH) classification, 165 cases of chronic prostatitis were surveyed by analysis of their laboratory results and clinical history. In addition, the chronic prostatitis symptom index (CPSI) of each patient was evaluated. All patients were treated for 6 to 8 weeks, type III A with antibiotics and alpha1 receptor inhibitor, type III B with alpha1 receptor inhibitor, diazepam diclogenatis and other narcotics. All cases were additionally treated by psychological and physical therapies. Traditional Chinese Medicine was also used in some cases. RESULTS: Based on the results of CPSI after 6 weeks treatment, 121 (73.3%) significantly improved, 26 (15.8%) slightly improved and only 18(10.9%) did not respond to the therapy. CONCLUSION: Combined therapy can be an effective treatment for the chronic pelvic pain syndrome.

Adolescent↗

New combination therapies for asthma.

Combination products often have useful clinical benefits in asthma. The scientific rationale for combination therapy includes the fact that different agents have complimentary modes of action. Long-acting beta(2)-agonists have effects on airway smooth muscle, and inhaled corticosteroids have potent topical antiinflammatory effect. This combination has been shown to effectively reduce exacerbations and improve symptoms. Substantial clinical trial data provide a rationale for dual-control therapy supported by basic scientific data. Another combined therapy is inhaled steroids plus leukotriene-receptor antagonists, which provides the patient with two effective therapies. Leukotriene-receptor antagonist can also be combined with antihistamines for improved asthma control. Older therapies including theophylline and controlled release albuterol have been effectively added to inhaled corticosteroids, enabling a reduction in the dose of the inhaled steroids. Many other combination therapies are presently being tested.

Administration, Inhalation↗

[Combination therapy of doxifluridine (5'-DFUR) + cyclophosphamide (CPA) + tamoxifen (TAM) for advanced or recurrent breast cancer. Joint Research Group in the Osaka Area for Combination Therapy of 5'-DFUR with Other Drugs].

Outpatients with advanced and recurrent breast cancer were treated by a combination therapy of the following drugs: doxifluridine (5'-DFUR) orally administered at a dose of 1200 mg/day; cyclophosphamide (CPA) orally given at dose of 100 mg/day; and tamoxifen (TAM) orally given at dose of 20 mg daily. 5'-DFUR and CPA were administered on consecutive days 1-14, then discontinued for 14 days. The response rate was 44.8% including five CR and eight PR out of 29 complete cases. As for response cases in terms of the subject lesions, corresponding cases were chiefly found in soft tissue and the lung. As for the response rate with or without pretreatment, cases previously treated showed a higher response rate such as 42.9% indicating that the present therapy was effective in pretreatment cases. The main side effect was leukopenia, but not so severe. Few cases with diarrhea were found. Based on the above findings, the present treatment is conceivably a highly useful therapy, on an outpatient basis, for advanced and recurrent breast cancer, especially metastatic lesions of soft tissue and the lung.

Administration, Oral↗

Subchronic toxicity of human immunodeficiency virus and tuberculosis combination therapies in B6C3F1 mice.

Combination therapy with anti-HIV drugs and opportunistic infection drugs is a common practice in treatment of AIDS patients. Although toxic effects of most individual therapies are known, the toxic potential of most combination therapies has not been established. To understand the toxic consequences of combination therapies, the commonly used anti-HIV drug 3'-azido-3'-deoxythymidine (AZT) and tuberculosis infection therapies pyrazinamide, isoniazid, and rifampicin were evaluated by 13-week gavage studies in B6C3F1 mice, either alone or AZT in combination with one of the antituberculosis drugs. The doses include AZT 100, 200, and 400; pyrazinamide 1000 and 1500; isoniazid 50, 100, and 150; and rifampicin 100, 200, and 400 mg/kg/day. AZT alone caused hematopoietic toxicity with dose-related bone marrow suppression, macrocytic anemia, and thrombocytosis. Pyrazinamide or isoniazid alone at the doses tested did not cause significant toxicity. Rifampicin alone caused hematopoietic toxicity and possibly mild hepatic toxicity. Pyrazinamide below 10 times the therapeutic dose when given with AZT did not increase the hematological toxicity of AZT. Isoniazid markedly increased the hematological toxicity of AZT and contributed to mortality at 3 to 4 times the therapeutic dose combinations. Administration of rifampicin with AZT at the calculated therapeutic doses resulted in toxicity of far greater magnitude than that caused by AZT or rifampicin alone. Combination treatment with AZT and rifampicin caused severe anemia with mortality at 2 to 4 times the therapeutic dose combinations. However, AZT did not enhance the hepatotoxicity of rifampicin. Increased hematopoietic toxicity of AZT when given in combination with the above antituberculosis drugs may be due to changes in the metabolism of AZT. Results of these studies indicate that toxicological effects of combination therapies could be considerably more severe than and different from the toxicity of individual therapies.

Animals↗

[Combination therapy with 5'DFUR and MPA as a second line treatment for advanced/recurrent breast cancer].

As a second line therapy after failure to previous therapies, a combination therapy with MPA 1,200 mg po and 5'DFUR 1,200 mg po daily was given to 31 patients with recurrent breast cancer. At a median follow up period of 18 months, the overall response rate was 42%. The response rates for bone and visceral lesions were still good for the second line therapy. Patients previously exposed to tamoxifen (24 patients), 5-FU or its derivatives (21) and/or adriamycin (18) had response rates of 42%, 33%, 33%, respectively. The median duration of response in responders was 10 months. The overall median survival for the entire series was 9 months after start of the treatment. Thirteen (81%) of 16 patients with bone lesions were relieved from their bone pain. It is of special interest that the pain relief was also obtained in 7 out of 10 NC/PD patients with bone lesions, resulting in much improvement of their performance status. Side effects included obesity 52%, edema of the leg 35%, diarrhea 16% and so on. One patient developed venous thrombosis of her lower extremities and 4 were suspected to have the same condition. Fifty-five % of the patients underwent dose reduction of MPA at the 5th month of treatment in a median. This combination therapy is useful for recurrent disease even in late stages, so long as close observation is made for the occurrence of thrombosis.

Adult↗

Use of pharmacodynamic indices to predict efficacy of combination therapy in vivo.

Although combination therapy with antimicrobial agents is often used, no available method explains or predicts the efficacies of these combinations satisfactorily. Since the efficacies of antimicrobial agents can be described by pharmacodynamic indices (PDIs), such as area under the concentration-time curve (AUC), peak level, and the time that the concentration is above the MIC (time>MIC), it was hypothesized that the same PDIs would be valid in explaining efficacy during combination therapy. Twenty-four-hour efficacy data (numbers of CFU) for Pseudomonas aeruginosa in a neutropenic mouse thigh model were determined for various combination regimens: ticarcillin-tobramycin (n = 41 different regimens), ceftazidime-netilmicin (n = 60), ciprofloxacin-ceftazidime (n = 59), netilmicin-ciprofloxacin (n = 38) and for each of these agents given singly. Multiple regression analysis was used to determine the importance of various PDIs (time>MIC, time>0.25 x the MIC, time>4 x the MIC, peak level, AUC, AUC/MIC, and their logarithmically transformed values) during monotherapy and combination therapy. The PDIs that best explained the efficacies of single-agent regimens were time>0.25 x the MIC for beta-lactams and log AUC/MIC for ciprofloxacin and the aminoglycosides. For the combination regimens, regression analysis showed that efficacy could best be explained by the combination of the two PDIs that each best explained the response for the respective agents given singly. A regression model for the efficacy of combination therapy was developed by use of a linear combination of the regression models of the PDI with the highest R(2) for each agent given singly. The model values for the single-agent therapies were then used in that equation, and the predicted values that were obtained were compared with the experimental values. The responses of the combination regimens could best be predicted by the sum of the responses of the single-agent regimens as functions of their respective PDIs (e.g., time>0.25 x the MIC for ticarcillin and log AUC/MIC for tobramycin). The relationship between the predicted response and the observed response for the combination regimens may be useful for determination of the presence of synergism. We conclude that the PDIs for the individual drugs used in this study are class dependent and predictive of outcome not only when the drugs are given as single agents but also when they are given in combination. When given in combination, there appears to be a degree of synergism independent of the dosing regimen applied.

Animals↗

Activation of maternal killer cells in the pregnant uterus with chronic indomethacin therapy, IL-2 therapy, or a combination therapy is associated with embryonic demise.

We have previously shown that NK lineage cells migrate to the murine decidua of pregnancy; but with advancing gestation, they are progressively inactivated in situ by prostaglandins of the E series (PGE2) secreted by decidual cells and decidual macrophages. We have also shown that the same mechanism inactivates all killer lineage cells in the human decidua, and that this inactivation is at least in part due to a down-regulation of IL-2 receptors and an inhibition of IL-2 production in situ. We examined whether chronic indomethacin therapy (to block prostaglandin synthesis), or a systemic administration of a high dose of IL-2, or a combination of both agents administered to pregnant mice could activate killer cells in situ and interfere with the progress of pregnancy; and if so, whether there was a causal relationship between the two events. Pregnant CD1 mice (Day 5 of gestation) were subjected to chronic indomethacin therapy (14 micrograms/ml in drinking water up to Day 15, or 50 micrograms twice daily sc or ip up to Day 10), high dose IL-2 therapy (25,000 Cetus U of human recombinant IL-2, ip every 8 or 12 hr for 3-5 days), or a combination of the two. These treatments led to pregnancy loss in 89-100% of mice, in contrast to 1% loss in control, vehicle-treated mice. Uterine mononuclear cells isolated from the embryo resorption sites exhibited high killer activity against YAC-1 lymphoma as well as murine trophoblast targets, with NK-like phenotype (Asialo GM-1+, Thy-1-) after indomethacin therapy and LAK-like phenotype (AGM-1+, Thy-1+) after IL-2 or indomethacin + IL-2 therapy. That AGM-1+ killer cells resulted in the pregnancy loss was suggested by the findings that in two of three separate experiments, iv injections of AGM-1 ab into pregnant indomethacin + IL-2-treated mice nearly completely prevented the fetoplacental demise (reducing it to 7.7% from 100%). These results reveal that PGE2-mediated inactivation of killer lineage cells in the decidua in situ is conducive to the survival of the conceptus.

Abortion, Induced↗

Utilizing combination therapy to optimize melasma outcomes.

Melasma is a chronic and recurrent disorder. It has been underdiagnosed and undertreated due to lack of effective therapies and the perception that it is merely a cosmetic nuisance. Hydroquinone, corticosteroids, licorice extracts and kojic acid have been used as monotherapy to treat melasma. However, the present standard of care in melasma therapy is combination therapy. To date, the most effective treatment is a triple-combination agent that contains hydroquinone 4%, tretinoin 0.05% and fluocinolone acetonide 0.01%. In clinical trials, its use led to complete or near-complete clearing of melasma in 8 weeks. A long-term study demonstrated its continuing efficacy and safety for as long as 360 days. In an examination of quality of life parameters, patients using the triple-combination cream showed significant improvements in self-perception by all 1290 patients. Various combinations of melasma therapy, such as chemical peels, particularly as adjuvants to the triple-combination cream, are discussed.

Administration, Cutaneous↗

Comparison of fluvastatin + fenofibrate combination therapy and fluvastatin monotherapy in the treatment of combined hyperlipidemia, type 2 diabetes mellitus, and coronary heart disease: a 12-month, randomized, double-blind, controlled trial.

BACKGROUND: Diabetes risk is often complicated by a mixed hyperlipoproteinemia not sufficiently controlled by a single antihyperlipidemic drug; however, there are some concerns about the safety of combined statin and fibrate treatments. OBJECTIVE: The aim of this study was to compare the efficacy and safety profile of fluvastatin + fenofibrate combination therapy and those of fluvastatin monotherapy in the treatment of combined hyperlipidemia, type 2 diabetes mellitus (DM), and coronary heart disease (CHD) (ie, high risk for cardiovascular disease [CVD]). METHODS: This 12-month, randomized, double-blind, controlled trial was conducted at the University of Pavia, Pavia, Italy. Patients aged 18 to 80 years with combined hyperlipidemia, type 2 DM, and CHD were randomly assigned to receive combination therapy with extended-release fluvastatin 80 mg + micronized fenofibrate 200 mg or monotherapy with extended-release fluvastatin 80 mg. All treatments were given in tablet form, once daily with the evening meal, for 12 months. Lipid variables (low-density lipoprotein cholesterol [LDL-C], high-density lipoprotein cholesterol [HDL-C], total cholesterol [TC], and triglycerides [TG]) at 6 and 12 months were the primary efficacy variables, and glycemic status (glycosylated hemoglobin [HbA(1c)], fasting plasma glucose, and postprandial plasma glucose levels) at 6 and 12 months was the secondary efficacy variable. Tolerability was assessed using physical examination, including vital-sign assessment, body-weight measurement, electrocardiography, adverse events, and laboratory tests. A pharmacoeconomic analysis of both treatment regimens was also carried out using the incremental cost-effectiveness ratio (ICER). RESULTS: A total of 48 patients (24 men, 24 women; mean [SD] age, 60 [5] years) were enrolled. After 6 months, all primary efficacy variables, except for TG level, showed significant improvements from baseline only in the combination-therapy group (changes: LDL-C, -25%; HDL-C, +12%; and TC, -19%; all, P < 0.05 vs baseline). After 12 months, lipid variables showed significant improvements over baseline in both groups (all, P < 0.05), except for TG in the monotherapy group. Significant changes in LDL-C, HDL-C, and TG were found in the combination-therapy group (-35%, +34%, -32%, respectively) versus the monotherapy group (-25%, +14%, -17%, respectively; all, P < 0.05 between groups). The change from baseline in HbA(1c) level was significant with combination therapy (-12% vs -7%; P < 0.05). Both treatments were well tolerated, with no significant differences in the incidences of adverse events between the 2 groups. The ICER showed that each 1% decrease in LDL-C level achieved with the fenofibrate + fluvastatin combination added a cost of 14.97 Euros/y (US 12.25 US dollars/y), and each 1% increase in HDL-C level added a cost of 7.48 Euros/y (6.12/y US dollars), over the cost of monotherapy. CONCLUSIONS: In this selected sample of patients with combined hyperlipidemia, type 2 DM, and CHD, the combination of extended-release fluvastatin + micronized fenofibrate was associated with a more improved lipid profile than fluvastatin monotherapy, and was a well-tolerated and cost-effective therapeutic choice to treat these patients at high risk for CVD.

Adolescent↗

Adherence: a necessity for successful HIV combination therapy.

Patient adherence to combination therapy is a critical component of successful treatment outcomes. While combination therapy is known to be effective in slowing disease progression, the long-term benefit of these therapies can only be sustained if resistant strains of HIV do not emerge. Among factors that can result in the emergence of resistance, non-adherence is perhaps the most amenable to intervention. To maximize intervention efforts, a program of research on adherence is needed. A prerequisite for progress in adherence research is a focused effort on developing reliable and valid methods for measuring adherence that are feasible for patients living with HIV/AIDS. If new adherence assessment procedures cannot be developed, it would be helpful if a consensus on measurement approaches could be achieved. This consensus might propose strategies for matching measurement approaches with research questions and recommendations for the use of multiple measures where appropriate. It is important that research continue to identify psychological, physiological, socio-cultural and environmental factors that are associated with non-adherence in various populations both in the developed and the developing world. Intervention programs that address these risk factors and promote adherence need to be developed and evaluated in controlled clinical trials. These programs will need to be tailored to different populations and cultural groups, and tested in both developed and developing countries where HIV therapies are being prescribed. The results of this research would significantly contribute to efforts to prevent virus breakthrough and, by doing so, assist persons living with HIV/AIDS in achieving the health benefits that the combination therapies offer.

Anti-HIV Agents↗

ACTH therapy for infantile spasms: a combination therapy with high-dose pyridoxal phosphate and low-dose ACTH.

Combination therapy consisting of high-dose pyridoxal phosphate (40-50 mg/kg/day) and low-dose synthetic ACTH (0.01 mg/kg/day) was prescribed in 28 children with infantile spasms. Monotherapy with pyridoxal phosphate provided excellent seizure control in 3 of the 28 (11%) patients. ACTH was subsequently added to the regimen of the remaining 25 patients. As of 1 month after discontinuing the ACTH treatment, 21 of the 25 (84%) patients had experienced no seizures. The mean interval until seizure control was achieved was 4.1 days after the start of treatment with ACTH. The 21 patients have been monitored for a mean of 34.9 months (range 2-81 months); 6 patients (29%) have had recurrences of infantile spasms, and 10 (48%) have experienced normal development. Fourteen of the 28 patients (50%) have had transient increases in liver enzymes, but none of the patients developed more serious side effects.

Age of Onset↗

The current status of adjuvant hormonal therapy combined with radiation therapy for localised prostate cancer.

Analysis of the results of treatment of localised prostate cancer with radiation and surgery has identified patients who are at high risk of developing metastatic dissemination. High histologic grade, serum prostate specific antigen above 20 ng/ml, extension beyond the capsule of the prostate, and involvement of lymph nodes are highly predictive of metastatic risk. Antiandrogen therapy has high rates of activity in the treatment of overt metastatic disease prompting its assessment as an adjuvant treatment added to radiation therapy. There are now major prospective randomized trials which have been completed. The current evidence indicates that a large survival benefit ensues when antiandrogen therapy is added to radiation for appropriately selected patients. This adjuvant approach is likely to become the standard of care. Strategies for further enhancement of adjuvant therapy are discussed.

Androgen Antagonists↗