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PubMed2000

Oxandrolone in trauma patients.

STUDY OBJECTIVE: To determine the effect of oxandrolone administration on nutritional and clinical outcomes after multiple trauma. DESIGN: Prospective, randomized, double-blind, placebo-controlled study. SETTING: Level 1 trauma center in a university teaching hospital. PATIENTS: Sixty-two patients requiring enteral nutrition, 60 of whom completed the study. INTERVENTION: Patients were randomized to receive either oxandrolone 10 mg or placebo twice/day for a maximum of 28 days. MEASUREMENTS AND MAIN RESULTS: Total urinary nitrogen, prealbumin, nitrogen balance, total body water, and body cell mass were measured on day 1 of enteral nutrition and then at day 7, day 10, and study exit. Patients were assessed daily for metabolic and infectious complications. The two groups were similar for demographics and dosage of enteral nutrition. Measurement of total urinary nitrogen at study entry showed both groups to be highly catabolic (oxandrolone 17.2 +/- 4.9, placebo 19.1 +/- 10.8 g/day, NS). On days 7 and 10, total urinary nitrogen increased in both groups; however, there was no significant difference between groups. Nitrogen balance was negative throughout the study in each group. Body cell mass decreased slightly in both groups over the study period. Prealbumin serum concentrations increased significantly in both groups at day 10 and study exit compared with study entry. The groups did not differ significantly for length of hospital stay (oxandrolone 30.8 +/- 17.9, placebo 27.0 +/- 25.7 days), length of intensive care unit stay (oxandrolone 17.1 +/- 7.8, placebo 15.5 +/- 9.7 days), and frequency of pneumonia or sepsis (oxandrolone 48, placebo 43 episodes). CONCLUSION: Oxandrolone 20 mg/day does not have obvious benefit in nutritional and clinical outcomes during the first month after multiple trauma.

Adult↗

PubMed1981

Oxandrolone and plasma triglyceride reduction: effect on triglyceride-rich and high density lipoproteins.

Oxandrolone, an anabolic androgenic steroid, has been shown repeatedly to lower plasma triglycerides in hypertriglyceridemic patients. This study was performed to determine which of seven subfractions of triglyceride-rich lipoproteins are affected by the action of oxandrolone with respect to both their plasma levels and composition. Concurrently, we have determined the levels and composition of HDL subfractions and the plasma levels of the major HDL apoprotein, apoA-I. Oxandrolone was administered to two hypertriglyceridemic subjects, one with type III and one with type V hyperlipoproteinemia until plasma triglycerides were below the target level of 270 mg/dl. Two months and two weeks were required for the type III and type V patients, respectively. In both subjects, the treatment caused a reduction in the plasma levels of all seven subclasses of triglyceride-rich lipoproteins without altering their overall composition. LDL were at least temporarily increased. The reduction of VLDL subfractions caused by oxandrolone was accompanied by a progressive and consistent effect on HDL subfractions in both hypertriglyceridemic subjects; in the type III patient, oxandrolone reduced HDL2 from low pretreatment levels further until they became undetectable. The type V subject had no detectable HDL2 levels prior to treatment. In both subjects, oxandrolone lowered the levels of HDL3. This lowering effect was caused by a preferential reduction of the less dense, major HDL3 subfraction, i.e. HDL3L, causing the denser, smaller HDL3 subfraction, HDL3D, to become the predominant HDL class. The lowering of HDL levels was reflected by a decrease in the plasma levels of the major HDL apoprotein, apoA-I. This first report on the simultaneous reduction of VLDL and the larger, less dense HDL subclasses suggest that oxandrolone lowers plasma triglycerides by a mechanism other than increased lipolysis.

Adult↗

PubMed1993

A study of oral nutritional support with oxandrolone in malnourished patients with alcoholic hepatitis: results of a Department of Veterans Affairs cooperative study.

A Veterans Affairs cooperative study involving 273 male patients was performed to evaluate efficacy of oxandrolone in combination with an enteral food supplement in severe alcoholic hepatitis. All patients had some degree of protein calorie malnutrition. On an intention-to-treat basis, only minimal changes in mortality were observed. However, in patients with moderate malnutrition mortality on active treatment at 1 mo was 9.4% compared with 20.9% in patients receiving placebo. This beneficial effect was maintained so that after 6 mo on active treatment 79.7% of patients were still alive, compared with 62.7% of placebo-treated patients (p = 0.037). Improvements in both the severity of the liver injury (p = 0.03) and malnutrition (p = 0.05) also occurred. No significant improvement was observed with severe malnutrition. To better determine the effect on therapeutic efficacy, we compared results with those from a nearly identical population (cooperative study 119) treated with oxandrolone but not given the food supplement. Patients were stratified according to their caloric intake (greater than 2,500 kcal/day was considered adequate to supply energy needs and promote anabolism). For patients with moderate malnutrition and adequate caloric intake, oxandrolone treatment reduced 6-mo mortality (4% active treatment vs. 28% placebo [p = 0.002]). For patients with moderate malnutrition and inadequate calorie intake, oxandrolone had no effect on mortality (30% active treatment vs. 33% placebo). In cases of severe malnutrition, oxandrolone had no effect on survival. However, adequate caloric intake was associated with 19% mortality, whereas patients with inadequate intake exhibited 51% mortality (p = 0.0001). These results indicate that nutritional status should be evaluated in patients with alcoholic hepatitis. When malnutrition is present, vigorous nutrition therapy should be provided, and in patients with moderate malnutrition oxandrolone should be added to the regimen.

Alcohol Drinking↗

PubMed1986

Methionyl human growth hormone and oxandrolone in Turner syndrome: preliminary results of a prospective randomized trial.

Seventy girls with Turner syndrome, 4 to 12 years of age, were randomly assigned to receive either no treatment (control) or methionyl human growth hormone (0.125 mg/kg three times per week), oxandrolone (0.125 mg/kg/day), or combination hGH plus oxandrolone therapy. Baseline growth rates averaged 4.3 cm/yr, and all were within 2 SD of mean growth velocity for age in girls with Turner syndrome. Sixty-seven girls remained in the study for a minimum of 1 year. Growth rates and growth velocity (in standard deviations for age in girls with Turner syndrome) were control 3.8 cm/yr (-0.1 SD), hGH 6.6 cm/yr (+2.3 SD), oxandrolone 7.9 cm/yr (+3.7 SD), and combination therapy 9.8 cm/yr (+5.4 SD). Mean bone ages advanced 1.0 years (hGH), 1.3 years (oxandrolone), and 1.6 years (combination). However, median increments in height age/bone age (delta HA/delta BA) ratios ranged from 1.0 to 1.1 for treatment groups, compared with 0.8 for the controls. Predicted adult height by the method of Bayley-Pinneau increased 2.5 cm for hGH or oxandrolone alone, and 3.2 cm for combination treatment. These data indicate that both hGH and oxandrolone can significantly stimulate short-term skeletal growth in patients with Turner syndrome, and potentially increase final adult height.

Adolescent↗

PubMed1988

Three-year results of a randomized prospective trial of methionyl human growth hormone and oxandrolone in Turner syndrome.

Seventy girls with Turner syndrome, 4 to 12 years of age, participated in a prospective, randomized study to determine the effects on growth of methionyl human growth hormone (met-hGH) or oxandrolone. Subjects were randomly assigned to receive either no treatment (control) or met-hGH (0.125 mg/kg three times per week), oxandrolone (0.125 mg/kg/day), or combination met-hGH plus oxandrolone. At the end of an initial period of 12 to 20 months, patients in the original control and oxandrolone groups were given combination met-hGH plus oxandrolone. At that time the dosage of oxandrolone was lowered to 0.0625 mg/kg/day. Sixty-five subjects have now completed the first 3 years of the study. Compared with the control growth rate for year 1 (3.8 cm/yr), significant increases in growth rate were seen in all 3 years of combination therapy (9.8, 7.4, and 6.1 cm/yr, respectively) and in the first 2 years of treatment with met-hGH alone (6.6, 5.4, and 4.6 cm/yr). When growth velocity was expressed as standard deviation for age in girls with Turner syndrome, significant increases relative to the control group for year 1 (-0.1 SD) were seen in all three years of both combination therapy and met-hGH alone (combination, +6.6, +4.3, +3.0 SD; met-hGH, +3.1, +2.0, +1.4 SD). After 3 years of treatment, predicted adult height by the method of Bayley-Pinneau increased 4.5 cm in the met-hGH group and 8.2 cm in the combination group.

Body Height↗

PubMedDate not supplied

Oxandrolone, an anabolic steroid, enhances the healing of a cutaneous wound in the rat.

The effect of the anabolic steroid oxandrolone on the healing rate of a standardized full thickness linear wound on the back of the rat was studied. Oxandrolone was given orally by gavage in peanut oil at a dose of 0.1 mg/kg/day. A placebo powder in peanut oil was given at the same dose to a control group. Parameters monitored were time to complete wound closure, wound hydroxyproline content and tensile strength, as well as histology. We found that wounds closed completely in 12+/-3 days with oxandrolone, compared to 18+/-3 days for a placebo, a statistically significant difference. The rate of body weight gain was identical in both groups. Hydroxyproline content of the healed incision site was 23+/-4 mg/g tissue vs. 17+/-3 mg/g tissue, while the tensile strength increased to 185+/-13 g/mm2 vs. 102+/-18 g/mm2 in the oxandrolone and placebo groups, respectively. Both parameters were significantly increased with the anabolic steroid. Histologic examination showed a wound that contained more mature and densely packed collagen and was also hypercellular with oxandrolone treatment. We conclude that the anabolic steroid oxandrolone significantly enhanced wound healing unrelated to any generalized increase in protein mass as would be reflected in body weight.

Anabolic Agents↗

PubMed1999

Oxandrolone, used for treatment of wasting disease in HIV-1-infected patients, does not diminish the antiviral activity of deoxynucleoside analogues in lymphocyte and macrophage cell cultures.

Antiviral agents are the primary therapy for patients infected with HIV-1. However, supportive therapies are often necessary in addition to antiviral drugs because of the devastating wasting process associated with HIV-1 infection and AIDS. Oxandrolone, an anabolic steroid, is used in promoting weight gain and, most important lean body mass (LBM), in patients with HIV-1 disease. We investigated whether oxandrolone interferes with the antiviral activity of zidovudine (ZDV), dideoxyinosine (ddI), and dideoxycytidine (ddC) on HIV-1 replication in peripheral blood lymphocytes and macrophage-monocytes. The nucleoside analogues had nanomolar 50% inhibitory concentrations (IC50) in peripheral lymphocytes. Combinations of nucleoside analogues and oxandrolone did not result in increased IC50 values. Oxandrolone used alone exhibited micromolar IC50 values in peripheral blood lymphocytes. Lack of interference was consistent for nucleoside concentrations up to 5 microM and for oxandrolone concentrations up to 100 microM in several combinations of drugs, viral strains, and peripheral lymphocytes and macrophages. We conclude that oxandrolone can be used for the promotion of weight gain in patients with AIDS-related wasting without interference with the antiviral effects of ZDV, ddI, or ddC.

Anabolic Agents↗

PubMed2005

Oxandrolone enhances skeletal muscle myosin synthesis and alters global gene expression profile in Duchenne muscular dystrophy.

Earlier studies have shown that the progressive, unrelenting muscle loss associated with Duchenne muscular dystrophy (DMD) involves an imbalance between the rates of synthesis and degradation of muscle proteins. Although previous studies have suggested that oxandrolone may be beneficial in DMD, the mechanism of action of oxandrolone on muscle in DMD remains unclear. To address these issues, we combined stable isotope studies and gene expression analysis to measure the fractional synthesis rate of myosin heavy chain (MHC), the key muscle contractile protein, the transcript levels of the isoforms of MHC, and global gene expression profiles in four children with DMD before and after 3 mo of treatment with oxandrolone. Gastrocnemius muscle biopsies and blood samples were collected during the course of a primed 6-h continuous infusion of l-[U-(13)C]leucine on two separate occasions, before and after the 3-mo treatment with oxandrolone (0.1 mg.kg(-1).day(-1)). Gene expression analysis was done with microarrays and RT-qPCR. In response to the treatment, MHC synthesis rate increased 42%, and this rise was accounted for, at least in part, by an upregulation of the transcript for MHC8 (perinatal MHC). Gene expression data suggested a decrease in muscle regeneration as a consequence of oxandrolone therapy, presumably because of a decrease in muscle degeneration. These findings suggest that 1) oxandrolone has a powerful protein anabolic effect on a key contractile protein and 2) larger and longer-term studies are warranted to determine whether these changes translate into meaningful therapy for these patients.

Adolescent↗

PubMed1991

A randomized, controlled trial of treatment of alcoholic hepatitis with parenteral nutrition and oxandrolone. I. Short-term effects on liver function.

The present studies were designed to provide careful measures of effects of oxandrolone, an anabolic steroid, intravenous nutritional supplementation, and the combination of these two treatments on liver functions, metabolic balances, nitrogen metabolism, and nutritional status in patients with moderate to severe alcoholic hepatitis. Of 43 patients originally recruited, 39 (19 men, 20 women) with typical clinical and laboratory features of alcoholic hepatitis (11 Child's-Pugh class B; 28 class C) were admitted to a metabolic unit and completed a 35-day three-phase protocol. Phase I was a 10-day baseline period of observation, during which routine and special quantitative tests of liver function (galactose and antipyrine metabolism), a 7-day elemental balance study, and a 15N, 13C-leucine metabolism study were done. Phase II was a 21-day treatment period during which patients were randomly assigned to receive one of four regimens: 1) standard therapy, consisting of abstinence, a balanced, nutritionally adequate diet, and multivitamins; 2) oxandrolone (20 mg orally four times a day) plus standard therapy; 3) nutritional supplementation, consisting of 2 L daily of 3.5% crystalline amino acids (in 5% dextrose), given by peripheral vein; or 4) a combination of oxandrolone and nutritional supplementation, along with standard therapy. Metabolic balances were repeated during phase II. Phase III was 2 or 3 days posttreatment, during which special studies of liver functions and volumes and leucine metabolism were repeated. All patients who completed phase I of study and were randomly allocated to one of the four treatment groups completed the subsequent two phases. Overall, with time, patients showed highly significant improvements in most clinical and laboratory features. For most standard laboratory tests (e.g., serum albumin, transferrin, prothrombin time) improvements were more marked in patients treated with nutritional supplementation and/or oxandrolone than in those given standard therapy alone. Liver volumes fell in all treatment groups, with greater improvement in those treated with nutritional supplementation. Improvements in galactose and antipyrine metabolism rates were significant only in those treated with nutritional supplementation or oxandrolone. Effects of treatments on metabolic balances, nitrogen metabolism, and measures of nutrition are described in this issue in a companion paper. We conclude that the addition of nutritional supplementation and oxandrolone to standard therapy of moderately severe or severe alcoholic hepatitis is well tolerated, and leads to more rapid improvement in the laboratory parameters measured.

Adult↗

PubMed1991

A randomized, controlled trial of treatment of alcoholic hepatitis with parenteral nutrition and oxandrolone. II. Short-term effects on nitrogen metabolism, metabolic balance, and nutrition.

Patients with moderately severe or severe alcoholic hepatitis, described in a companion paper in this issue, had serial studies of energy and protein metabolism and elemental balances before and during treatment for 21 days with one of four randomly assigned regimens: 1) standard therapy, consisting of abstinence, a balanced, nutritionally adequate diet, and multivitamins; 2) oxandrolone (20 mg orally four times a day) plus standard therapy; 3) nutritional supplementation, consisting of 2 liters of 3.5% crystalline amino acids in 5% dextrose given by peripheral vein (PPN) plus standard therapy; and 4) a combination of the other three treatments. Dietary and intravenous intakes and weights were recorded daily, and weekly averages were calculated. Anthropometric measurements and blood studies were done weekly; blood studies included white blood cell counts and differentials, serum prealbumin, transferrin, and total protein and plasma aminograms. Four-days complete balance studies and measures of 15N,1-13C-leucine metabolism also were performed at baseline and after the treatment period. Major findings were as follows: a) Intakes of total calories and protein were significantly higher in PPN-treated than in other groups. b) All patients had positive elemental balances, both at baseline and at the end of the treatment period. However, those treated with PPN (with or without oxandrolone) had higher positive balances of nitrogen, potassium, phosphorus, and magnesium, indicating improvement in lean body mass. c) Anthropometric measurements showed no significant changes, but measures of the visceral protein compartment (serum prealbumin, transferrin, total protein, total lymphocyte count) improved significantly with time. For most of these variables, increases were significantly greater in those treated with PPN with or without oxandrolone than in the other groups. However, for prealbumin, the increase was greatest in the oxandrolone-treated group d) PPN treatment produced dramatic increases in levels of branched-chain amino acids and improvement in the ratio of plasma branched chain to aromatic amino acids. Other treatments had no effect on plasma aminograms. e) Metabolism of 15N,1-13C-leucine was normal and was not affected significantly by treatment. Therapy with PPN and/or oxandrolone was tolerated well. We conclude that PPN has favorable effects on energy and protein metabolism in florid alcoholic hepatitis; oxandrolone has lesser effects, although it may exert some additional action and particularly increases serum prealbumin levels. The results support the use of nutritional supplementation in therapy of moderately severe or severe alcoholic hepatitis.

Adult↗

PubMed1989

Studies on anabolic steroids. II--Gas chromatographic/mass spectrometric characterization of oxandrolone urinary metabolites in man.

The metabolism of 17 alpha-methyl-17 beta-hydroxy-2-oxa-5 alpha-androstan-3-one (oxandrolone) in man has been investigated by gas chromatography/mass spectrometry. After oral administration of a 10 mg dose to man, five metabolites were detected in the free fraction of the urinary samples. Oxandrolone, the major compound excreted in urine, was detected within 72 h after administration. During this period 35.8 and 8.4% of the administered dose was excreted as unchanged oxandrolone and 17-epioxandrolone, respectively. In addition, minute amounts of 16 alpha- and 16 beta-hydroxyoxandrolone and a delta-hydroxy acid resulting from the hydrolysis of the lactone group of oxandrolone were detected in the urine samples 8-60 h after administration. Furthermore, the susceptibility of oxandrolone to hydrolysis was investigated under several pH conditions. Extraction and fractionation of steroidal metabolites was achieved by using C18 and silica Sep Pak chromatography. The mass spectra of the metabolites are presented and major fragmentation pathways discussed.

Adult↗

PubMed1991

The effect of short-term growth hormone or low-dose oxandrolone treatment in boys with constitutional growth delay.

We evaluated the effect of six-month treatment with growth hormone (GH) or low-dose oxandrolone in a group of boys with constitutional growth delay (CGD). Sixteen boys were randomly assigned to two treatment groups. Group 1 received GH (0.6 U/kg/week sc 5-6 times/week) and Group 2 received oxandrolone (0.07 mg/kg po). The boys of the two groups were closely matched for age (13.7 +/- 0.5 and 12.8 +/- 0.4 years) (mean +/- SE), chronologic age/bone age ratio (1.15 +/- 0.04 and 1.16 +/- 0.02), height standard deviation score (SDS; -2.7 +/- 0.4 and -2.5 +/- 0.3) and pretreatment height velocity (HV) (3.7 +/- 0.8 and 4.0 +/- 0.4 cm/year). Other known causes of short stature were excluded in all subjects, and none had taken long-term medication prior to the study. After 6 months of treatment HV increased to 7.5 +/- 0.4 and to 8.1 +/- 0.5 cm/year in group 1 and 2, respectively. Plasma IGF-I concentrations rose significantly after treatment in both groups. Predicted adult height was not significantly affected by either GH or oxandrolone treatment. We conclude that a short-term course of low-dose oxandrolone is as effective as GH to accelerate growth in boys with CGD. Low-dose oxandrolone represents an effective, cheap, and convenient therapeutic approach in boys with CGD.

Adolescent↗

PubMed2004

Effects of long-term oxandrolone administration in severely burned children.

BACKGROUND: Severe burns cause exaggerated catabolism of muscle protein and inhibit bone deposition. Weakness and bony growth arrest interfere with rehabilitation. The purpose of this study was to determine whether oxandrolone administration for 1 year after the burn reverses muscle and bone catabolism in hypermetabolic pediatric burn patients. METHODS: Children with burns greater than 40% total body surface area were enrolled into a randomized controlled trial to receive oxandrolone as a long-term anabolic agent. All patients received similar clinical care. Subjects were studied at discharge (95% healed) and at 6, 9, and 12 months after the burn, after treatment with 0.1 mg/kg po bid or placebo. Serum hepatic transaminases were measured. Lean body mass (LBM), bone mineral content (BMC,) and bone mineral density (BMD) were measured by dual energy x-ray absorptiometry. Patients completed a safety questionnaire and were reviewed clinically at intervals. RESULTS: The groups were similar in age, weight, and total body surface area burned. LBM was significantly greater with oxandrolone at 6, 9, and 12 months after the burn (P < .001) and BMC at 12 months (P < .016). Age- and gender-matched BMD z scores were significantly better with oxandrolone (P < .039). Liver transaminases were unaffected. CONCLUSIONS: Long-term administration of oxandrolone safely improves LBM, BMC, and BMD in severely burned children.

Adolescent↗

PubMed1992

Six-year results of a randomized, prospective trial of human growth hormone and oxandrolone in Turner syndrome.

Seventy girls with Turner syndrome, verified by karyotype, were randomly assigned to observation or treatment with human growth hormone (hGH), oxandrolone, or a combination of hGH plus oxandrolone for a period of 12 to 24 months, to assess the effect of treatment on growth velocity and adult height. Subsequently, all subjects received either hGH alone or hGH plus oxandrolone. Data are presented for 62 subjects treated for a period of 3 to 6 years. When compared with the anticipated growth rate in untreated patients, the growth rate after treatment with hGH, both alone and in combination with oxandrolone, showed a sustained increase for at least 6 years. Treatment is continuing in over half of the subjects; at present, 14 (82%) of 17 girls receiving hGH alone and 41 (91%) of 45 girls receiving combination therapy exceeded their expected adult heights. Thirty girls have completed treatment; mean height for these 30 patients is 151.9 cm, compared with their mean original projected adult height of 143.8 cm. We conclude that therapy with hGH, alone and in combination with oxandrolone, can result in a sustained increase in growth rate and a significant increase in adult height for most prepubertal girls with Turner syndrome.

Age Determination by Skeleton↗

PubMed1988

Carbohydrate and lipid metabolism in Turner syndrome: effect of therapy with growth hormone, oxandrolone, and a combination of both.

To evaluate the effects of growth-promoting therapy on carbohydrate metabolism in girls with Turner syndrome, we determined glucose and insulin concentrations during oral glucose tolerance tests (OGTTs) at baseline and after 5 days, 2 months, and 12 months of treatment with growth hormone (GH), oxandrolone, or a combination of GH and oxandrolone, or after the same intervals with no therapy. Before therapy, subjects had a significantly greater glucose response during OGTT than published normal control values. There were no significant changes in mean fasting glucose, cholesterol, or triglyceride concentrations in any of the treatment groups. The integrated glucose concentrations rose significantly over baseline values in the oxandrolone group at 2 and 12 months and in the combination group at 5 days. There were significant increases in the mean integrated insulin concentrations at 2 and 12 months for the group receiving oxandrolone alone and at all three times for the group receiving combination therapy. Thus oxandrolone, alone or in combination with GH, had significant effects on carbohydrate metabolism in subjects with Turner syndrome, whereas GH alone did not.

Blood Glucose↗

PubMed2001

The rate of restoration of body weight after burn injury, using the anabolic agent oxandrolone, is not age dependent.

We determined the effect of age on the restoration of lost body weight and lean mass after burn injury, using the anabolic steroid oxandrolone. Patients with deep burns of 30-55% of body surface were studied when entering the recovery phase of injury, defined as resolution of the hypermetabolic, catabolic state. Patients were provided optimum nutrition and exercise alone or with the addition of oxandrolone. The rate of body weight and lean mass gain and improvement in physical function were measured over a 4-week period. Four groups were studied. A younger group, mean age of 34 years and burn size of 47+/-7% versus an older group, mean age 60 years and burn size 36+/-5%. The mean loss of body weight in the younger and older groups was 10+/-2 and 11+/-2% of total. Both groups were randomly divided into a control and oxandrolone study group. Weight restoration, 74+/-5% of which was lean mass, averaged 1.7+/-0.4 kg and 1.6+/-0.3 kg per week in the young and older oxandrolone groups. This rate was compared with 0.7+/-0.2 kg and 0.5+/-0.2 kg in the young and older control groups, with only 55% of weight gain being lean mass. These differences were statistically significant. The increase in the rate of weight gain with oxandrolone corresponded with a 30% decrease in length of stay in the burn rehabilitation unit. We concluded that the ability of an anabolic steroid to restore lean mass and physical function after burn surgery is not related to age.

Adolescent↗

PubMed1975

Effect of oxandrolone treatment on the activity of lipoprotein lipase, hepatic lipase and phospholipase A1 of human postheparin plasma.

The effect of a synthetic steroid, oxandrolone, on total postheparin plasma lipolytic activity, postherpain hepatic lipase activity, lipoprotein lipase and phospholipase A1 was studied in seven patients with hypertriglyceridemia. The mean total postheparin lipolytic activity increased 100 per cent during oxandrolone tratement (p smaller than 0.05). This change was caused mainly by postheparin hepatic lipase, whose activity increased on the average more than 2.5 times (p smaller than 0.001). The change in postheparin plasma-lipoprotein-lipase activity was insignificant. A highly significant correlation (r equals +0.87, p smaller than 0.01) was observed between the activities of postheparin hepatic lipase and phospholipase A1 before and during oxandrolone treatment. No relation was observed between serum triglyceride level and various postheparin lipase activities, or between the changes induced by oxandrolone in the level of serum lipids and the activities of postheparin lipases. We conclude that oxandrolone increases the activities of postheparin plasma hepatic lipase and phospholipase A1 but has little influence on lipoprotein lipase.

Adult↗

PubMed2004

Comparing megestrol acetate therapy with oxandrolone therapy for HIV-related weight loss: similar results in 2 months.

Weight loss is known to impact survival among patients infected with human immunodeficiency virus (HIV) even in the era of highly active antiretroviral therapy (HAART). In a randomized trial, we compared the effects of 2 months of treatment with either megestrol acetate (800 mg every day) or oxandrolone (10 mg twice per day) on body weight and composition in patients with weight loss of > or =5 kg who were receiving HAART. The mean weight was 66 kg, and the mean body mass index was 21. Mean weight gain in the megestrol acetate and the oxandrolone arms were 2.8 kg (4.6% of the baseline value) and 2.5 kg (3.9% of the baseline value), respectively (P=.80). Lean body mass accounted for 39% of weight gain in the megestrol acetate arm and 56% in the oxandrolone arm (P=.38). Seven patients in the megestrol acetate arm and 5 patients in the oxandrolone arm reported minor adverse events (P=.74). In conclusion, megestrol acetate therapy and oxandrolone therapy have similar effects on body weight and composition and are safe and well-tolerated during HAART.

Adult↗