Pygeum

Complementary and alternative medicine utilization continues to abound, as does the use of prescription medications. Thus, real and hypothetical concerns exist for potential drug-dietary supplement interactions. Several supplements, including kava and St. John's Wort, have the potential for adverse medication interactions, but there are also several supplements, such as fish oil, garlic, ginkgo, pygeum, and saw palmetto, whose adverse potential may have been embellished. Still, there are other common supplements, such as vitamin D, that are enjoying an impressive amount of attention and consumption but their potential for current or future toxicity seems considerable and concerning, especially with individuals with multiple non-communicating practitioners. Regardless, it is important to continue to monitor dietary supplements (not just herbal products) that may have interaction and toxicity issues, and to also educate patients and clinicians on other supplements that do not have these issues despite an earlier concern and avoidance based on a minimal number of laboratory studies or case reports.

Pygeum africanum extract has been used for more than 20 years in France in patients suffering from benign prostatic hypertrophy (BPH). The extract displays anti-inflammatory activity and inhibits bladder hyperreactivity during the above conditions. However, the mechanism of action of P. africanum extract has never been clearly resolved. It has been recently demonstrated that infiltration by inflammatory cells may be involved in the development of BPH. Certain of these cell types, such as macrophages, are known to produce chemotactic mediators including leukotrienes, and thus may contribute to the development of the disease. In order to investigate the potential effect of P. africanum extract on arachidonate metabolism, we examined its effect in vitro on leukotriene (LT) synthesis in human polymorphonuclear cells stimulated with the calcium ionophore A23187. Two formulations of the extract were tested, one dissolved in DMSO and one aqueous solution obtained after alkalinization (0.1 N; NaOH/acidification (0.1 N; HCl). Neither formulation had any effect on cell viability which was above 95% in both cases. P. africanum extract dissolved in DMSO significantly inhibited the production of 5-lipoxygenase metabolites (5-HETE, 20-COOH LTB4, LTB4 and 20-OH LTB4) at concentrations as low as 3 micrograms/ml (p < 0.01), while the same extract dissolved in NaOH/HCl only exhibited an inhibitory effect at 10 micrograms/ml (p < 0.01). This difference apparently reflects the greater solubility of the active components in the extract in DMSO. The ability of P. africanum to antagonize 5-lipoxygenase metabolite production may contribute, at least in part, to its therapeutic activity in inflammatory component of BPH.

BACKGROUND: and aims: Benign Prostatic hyperplasia (BPH) is an important public health problem. Roughly half of all men will suffer from BPH related symptoms later in life. The prostate gland, a hormone dependent part of the male reproductive system, is susceptible to internal and external disruptions of regulatory systems. We attempt in this paper to collect available evidence on influence of lifestyle modifications, and naturally occurring substances, plants, micronutrients and supplements on BPH symptoms. METHODS: Systematic review was performed within the MEDLINE database and Cochrane Library Central Search using a combination of Medical Subject Headings (MeSH) and keywords. RESULTS: Moderate exercise and the type and amount of protein intake have a considerable influence on BPH symptoms. The intake of zinc and vitamin D also positively influence BPH symptoms, and so do certain supplements, such as saw palmetto, cemilton and pygeum extracts. CONCLUSIONS: Lifestyle changes, diet modification and certain nutritional supplements can favorably influence BPH symptoms.

OBJECTIVE: To evaluate the usefulness of phytotherapy in the treatment of the benign prostatic hyperplasia (BPH) and prostatic adenocarcinoma (ADCP). ACQUISITION OF EVIDENCE: Systematic review of the evidence published until January 2011 using the following scientific terms: phytotherapy, benign prostate hyperplasia, prostatic adenocarcinoma, prostate cancer and the scientific names of compounds following the rules of the International Code of Botanical Nomenclature. The databases used were Medline and The Cochrane Library. We included articles published until January 2011 written in English and Spanish. We included studies in vitro/in vivo on animal models or human beings. Exclusion criteria were literature not in English and Spanish or articles with serious methodological flaws. SYNTHESIS OF THE EVIDENCE: We included 65 articles of which 40 met the inclusion criteria. BPH: the most studied products are serenoa repens and pygeum africanum. There are many studies in favour of the use of phytotherapy but its conclusions are inconsistent due to the small number of patients, the lack of control with placebo or short follow-up. However the use of these products is common in our environment. ADCP: there is no evidence to recommend phytotherapy in the treatment of the ADCP. There are works on prevention but only at experimental level so there is no evidence for its recommendation. CONCLUSIONS: The scientific evidence on the use of phytotherapy in prostatic pathology is conclusive not recommend ing the use of it for BPH or the ADCP.

INTRODUCTION: Lower urinary tract symptoms related to benign prostatic hyperplasia (BPH) and bladder outlet obstruction may affect up to 30% of men in their early 70s. Symptoms can improve without treatment, but the usual course is a slow progression of symptoms, with acute urinary retention occurring in 1% to 2% of men with BPH per year. METHODS AND OUTCOMES: We conducted a systematic review and aimed to answer the following clinical questions: What are the effects of medical, herbal, and surgical treatments? We searched: Medline, Embase, The Cochrane Library, and other important databases up to July 2009 (Clinical Evidence reviews are updated periodically, please check our website for the most up-to-date version of this review). We included harms alerts from relevant organisations such as the US Food and Drug Administration (FDA) and the UK Medicines and Healthcare products Regulatory Agency (MHRA). RESULTS: We found 63 systematic reviews, RCTs, or observational studies that met our inclusion criteria. We performed a GRADE evaluation of the quality of evidence for interventions. CONCLUSIONS: In this systematic review we present information relating to the effectiveness and safety of the following interventions: 5 alpha-reductase inhibitors, alpha-blockers, beta-sitosterol plant extract, Pygeum africanum, rye grass pollen extract, saw palmetto plant extracts, transurethral electrovaporisation, transurethral Holmium laser enucleation of the prostate, transurethral microwave thermotherapy, transurethral needle ablation, and transurethral resection (including transurethral resection versus transurethral incision, and transurethral resection versus visual laser ablation/laser vaporisation).

BACKGROUND: Benign prostatic hyperplasia (BPH), nonmalignant enlargement of the prostate, can lead to obstructive and irritative lower urinary tract symptoms (LUTS). The pharmacologic use of plants and herbs (phytotherapy) for the treatment of LUTS associated with BPH has been growing steadily. The extract of the African prune tree, Pygeum africanum, is one of the several phytotherapeutic agents available for the treatment of BPH. OBJECTIVES: To investigate the evidence whether extracts of Pygeum africanum (1) are more effective than placebo in the treatment of Benign Prostatic Hyperplasia (BPH), (2) are as effective as standard pharmacologic BPH treatments, and (3) have less side effects compared to standard BPH drugs. SEARCH STRATEGY: Trials were searched in computerized general and specialized databases (MEDLINE (1966-2000), EMBASE, Cochrane Library, Phytodok), by checking bibliographies, and by contacting relevant manufacturers and researchers. SELECTION CRITERIA: Trials were eligible if they (1) were randomized (2) included men with BPH (3) compared preparations of Pygeum africanum (alone or in combination) with placebo or other BPH medications (4) included clinical outcomes such as urologic symptom scales, symptoms, or urodynamic measurements. Eligibility was assessed by at least two independent observers. DATA COLLECTION AND ANALYSIS: Information on patients, interventions, and outcomes were extracted by at least two independent reviewers using a standard form. The main outcome measure for comparing the effectiveness of Pygeum africanum with placebo and standard BPH medications was the change in urologic symptoms scale scores. Secondary outcomes included change in urologic symptoms including nocturia and urodynamic measures (peak and mean urine flow, prostate size). The main outcome measure for adverse effects was the number of men reporting adverse effects. MAIN RESULTS: A total of 18 randomized controlled trials involving 1562 men met inclusion criteria and were analyzed. Only one of the studies reported a method of treatment allocation concealment, though 17 were double-blinded. There were no studies comparing Pygeum africanum to standard pharmacologic

PURPOSE: To conduct a systematic review and quantitative meta-analysis of the therapeutic efficacy and tolerability of Pygeum africanum in men with symptomatic benign prostatic hyperplasia. METHODS: Studies were identified through the search of Medline (1966 to 2000), Embase, Phytodok, the Cochrane Library, bibliographies of identified trials and review articles, and contact with relevant authors and drug companies. Randomized trials were included if participants had symptomatic benign prostatic hyperplasia, the intervention was a preparation of P. africanum alone or in combination with other phytotherapeutic agents, a control group received placebo or other pharmacologic therapies for benign prostatic hyperplasia, and treatment duration was at least 30 days. Two investigators independently extracted key data on design features, subject characteristics, and therapy allocation. RESULTS: A total of 18 randomized controlled trials involving 1,562 men met the inclusion criteria and were analyzed. Many studies did not report results in a method that permitted meta-analysis. Only 1 of the studies reported a method of treatment allocation concealment, although 17 were double-blinded. The mean study duration was 64 days (range 30 to 122). Compared with placebo in 6 studies, P. africanum provided a moderately large improvement in the combined outcome of urologic symptoms and flow measures as assessed by an effect size defined by the difference of the mean change for each outcome divided by the pooled standard deviation for each outcome (-0.8 SD [95% confidence interval (CI): -1.4 to -0.3]). Summary estimates of individual outcomes were also improved by P. africanum. Men were more than twice as likely to report an improvement in overall symptoms (risk ratio = 2.1, 95% CI: 1.40 to 3.1). Nocturia was reduced by 19% and residual urine volume by 24%; peak urine flow was increased by 23%. Adverse effects due to P. africanum were mild and similar to placebo. The overall dropout rate was 12% and was similar for P. africanum (13%), placebo (11%), and other controls (8%; P = 0.4 versus placebo and P = 0.5 versus other controls). CONCLUSIONS: The literature on P. africanum for the

Despite its popularity as a medication in various European countries or as a nutritional supplement in the United States, the role of plant extracts for the treatment of LUTS due to BPH remains controversial. Only a few randomized clinical trials that meet standard criteria of evidence-based medicine but with relatively short follow-up times and some meta-analyses mainly regarding Serenoa repens and Pygeum Africanum as well as more recent studies on pumpkin seeds have shown clinical effects and good tolerability. To better judge the therapeutic potential of these plant extracts, additional randomized placebo-controlled clinical trials with sufficient follow-up are needed.

Despite their traditional popularity in many European countries and their increasing use as dietary supplements in the United States, the role of phytotherapeutic agents in treating lower urinary tract symptoms (LUTS) and benign prostatic hyperplasia (BPH) is continuously debated. If strict criteria of evidence-based medicine are applied, the available data have not yet provided clear evidence of efficacy for most phytotherapeutic preparations. Different extraction procedures used by the different manufacturers, the variations of the raw products (plants) used and the fact that the potentially active component(s) of the final product and its (their) mechanism(s) of action are still under investigation make comparisons between the various products impossible. Thus, one product might have clinical efficacy while another might not. Therefore, as long as the composition of the final product of the various preparations is not proven to be identical, each manufacturer's preparation must be evaluated separately, using the gold standard of placebo-controlled studies according to accepted guidelines. Conclusions of meta-analyses that include products from different plants undergoing different extraction procedures and that are used in different dosages may be misleading. A number of short-term randomised trials and some metaanalyses in the recent literature suggest clinical efficacy and good tolerability for some preparations, mainly extracts from Serenoa repens and also Pygeum africanum, products with high concentrations of beta-sitosterol, and pumpkin seeds. It is also claimed that the efficacy of an extract from S. repens is comparable to that of finasteride and alpha-blockers. However, as has been demanded by the International Consultations on BPH, additional randomised, placebo-controlled trials are needed before phytotherapeutic agents can be recommended as an effective option in treating LUTS and BPH.

OBJECTIVE: To systematically review the existing evidence regarding the efficacy and safety of phytotherapeutic compounds used to treat men with symptomatic benign prostatic hyperplasia (BPH). DESIGN: Randomized trials were identified searching MEDLINE (1966--1997), EMBASE, Phytodok, the Cochrane Library, bibliographies of identified trials and review articles, and contact with relevant authors and drug companies. The studies were included if men had symptomatic benign prostatic hyperplasia, the intervention was a phytotherapeutic preparation alone or combined, a control group received placebo or other pharmacologic therapies for BPH, and the treatment duration was at least 30 days. Key data were extracted independently by two investigators. RESULTS: A total of 44 studies of six phytotherapeutic agents (Serenoa repens, Hypoxis rooperi, Secale cereale, Pygeum africanum, Urtica dioica, Curcubita pepo) met inclusion criteria and were reviewed. Many studies did not report results in a method allowing meta-analysis. Serenoa repens, extracted from the saw palmetto, is the most widely used phytotherapeutic agent for BPH. A total of 18 trials involving 2939 men were reviewed. Compared with men receiving placebo, men taking Serenoa repens reported greater improvement of urinary tract symptoms and flow measures. Serenoa repens decreased nocturia (weighted mean difference (WMD) = -0.76 times per evening; 95% CI = -1.22 to -0.32; n = 10 studies) and improved peak urine flow (WMD = 1.93 ml s(-1); 95% CI = 0.72 to 3.14, n = 8 studies). Men treated with Serenoa repens rated greater improvement of their urinary tract symptoms versus men taking placebo (risk ratio of improvement = 1.72; 95% CI = 1.21 to 2.44, n = 8 studies). Improvement in symptoms of BPH was comparable to men receiving the finasteride. Hypoxis rooperi (n = 4 studies, 519 men) was also demonstrated to be effective in improving symptom scores and flow measures compared with placebo. For the two studies reporting the International Prostate Symptom Score, the WMD was -4.9 IPSS points (95% CI = -6.3 to -3.5, n = 2 studies) and the WMD for peak urine flow was 3.91 ml s(-1) (95% CI = 0.91 to 6.90, n = 4 studies). Seca

OBJECTIVE: The aim of the clinical trial was to evaluate the efficacy and safety of ProstateEZE Max, an orally dosed herbal preparation containing Cucurbita pepo, Epilobium parviflorum, lycopene, Pygeum africanum and Serenoa repens in the management of symptoms of medically diagnosed benign prostate hypertrophy (BPH). DESIGN: This was a short-term phase II randomized double-blind placebo controlled clinical trial. SETTING: The trial was conducted on 57 otherwise healthy males aged 40-80 years that presented with medically diagnosed BPH. INTERVENTION: The trial participants were assigned to receive 3 months of treatment (1 capsule per day) with either the herbal preparation (n = 32) or a matched placebo capsule (n = 25). OUTCOME MEASURES: The primary outcome measure was the international prostate specific score (IPSS) measured at baseline, 1, 2 and 3 months. The secondary outcomes were the specific questions of the IPSS and day-time and night-time urinary frequency. RESULTS: There was a significant reduction in IPSS total median score in the active group of 36% as compared to 8% for the placebo group, during the 3-months intervention (p < 0.05). The day-time urinary frequency in the active group also showed a significant reduction over the 3-months intervention (7.0-5.9 times per day, a reduction of 15.6% compared to no significant reduction change for the placebo group (6.2-6.3 times per day) (p < 0.03). The night-time urinary frequency was also significantly reduced in the active group (2.9-1.8, 39.3% compared to placebo (2.8-2.6 times, 7%) (p < 0.004). CONCLUSION: The herbal preparation (ProstateEZE Max) was shown to be well tolerated and have a significant positive effect on physical symptoms of BPH when taken over 3 months, a clinically significant outcome in otherwise healthy men.

BACKGROUND: Benign prostatic hyperplasia (BPH), a common condition among older men, confers its morbidity through potentially bothersome lower urinary tract symptoms. Treatments for BPH include drugs such as alpha-adrenergic receptor blockers and 5-alpha reductase inhibitors, minimally invasive therapies that use heat to damage or destroy prostate tissue, and surgery including transurethral resection of the prostate. Complementary and alternative medicines are gaining popularity in the US. Two phytotherapies commonly used for BPH are extracts of the fruit of Serenoa repens, the Saw palmetto dwarf palm that grows in the Southeastern US, and extracts of the bark of Pygeum africanum, the African plum tree. PURPOSE: The objective of the Complementary and Alternative Medicines for Urological Symptoms (CAMUS) clinical trial is to determine if phytotherapy is superior to placebo in the treatment of BPH. METHODS: CAMUS was originally designed as a 3300-participant, four-arm trial of S. repens, P. africanum, an alpha-adrenergic blocking drug, and placebo with time to clinical progression of BPH, a measure of long-term efficacy, as the primary endpoint. Before enrollment started, a randomized, double-blind, placebo-controlled, single institution clinical trial showed that S. repens at the usual dose did not demonstrate any benefit over placebo with respect to symptom relief at 1 year. Consequently, the focus of CAMUS shifted from evaluating long-term efficacy to determining if any short-term (6-18 months) symptom relief could be achieved with increasing doses of S. repens, the phytotherapy most commonly used in the US for BPH. RESULTS: Results are anticipated in 2011. CONCLUSIONS: Trial design occurs in an environment of continually evolving information. In this case, emerging results from another trial suggested that a study of long-term efficacy was premature, and that an effective dose and preparation of S. repens had to be established before proceeding to a long-term clinical trial.

OBJECTIVES: To compare the efficacy and safety of Pygeum africanum extract, 50 mg twice daily and 100 mg once daily. METHODS: Patients with symptomatic benign prostatic hyperplasia (BPH) entered a 2-month randomized, parallel-group, double-blind, comparative phase (group A, 50 mg twice daily; group B, 100 mg once daily), followed by a 10-month, open phase (100 mg once daily). Main efficacy assessment parameters included International Prostate Symptom Score (IPSS), quality of life (QOL), and maximum urinary flow rate (Qmax). RESULTS: Two hundred nine patients completed the comparative phase in compliance with the protocol; 174 were included in the open phase. Both treatments had similar efficacy. IPSS (baseline 17 in both groups) improved by 38% in group A and 35% in group B. QOL improved by 28% in both groups. Qmax increased by 1.63 mL/s (16%) in group A and 2.02 mL/s (19%) in group B. After 12 months, the IPSS fell from 16 (baseline) to 9 (-46%). Half of the patients had an IPSS below 8. Mean Qmax increased by 1.65 mUs (15%). The safety profile was similar between groups and study phases. CONCLUSIONS: P. africanum extract at 50 mg twice daily and 100 mg once daily proved equally effective and safe at 2 months. Further improvements in efficacy with a satisfactory safety profile were documented after 12 months.

The 134 patients (aged 53 to 84 years) with symptoms of benign prostatic hyperplasia were drawn from two medical centers in Warsaw. The patients were randomly assigned to receive two capsules of the standard dose of an urtica/pygeum preparation (300 mg of Urtica dioica root extract combined with 25 mg of Pygeum africanum bark extract) or two capsules containing half the standard dose twice daily for 8 weeks. After 28 days' treatment, urine flow, residual urine, and nycturia were significantly reduced in both treatment groups. After 56 days' treatment, further significant decreases were found in residual urine (half-dose group) and in nycturia (both groups). There were no between-group differences in these measures of efficacy. Five patients reported adverse effects of treatment; treatment was not discontinued in any patient because of side effects. It is concluded that half doses of the urtica/pygeum extract are as safe and effective as the recommended full doses.

The efficacy of an extract of Pygeum africanum in the treatment of micturitional disorders due to benign prostatic hyperplasia was tested in a multicentre double-blind trial versus placebo. Capsules containing 50 mg of Pygeum africanum extract or placebo were administered at a dosage of 1 capsule in the morning and 1 capsule in the evening over a period of 60 days. 263 patients were included in this study, which was carried out in 8 centres in Germany, France, and Austria. Evaluation was mainly based on quantitative parameters such as residual urine, uroflowmetry and the precise monitoring of diurnal and nocturnal pollakiuria. Treatment with the Pygeum africanum extract led to a marked clinical improvement: a comparison of the quantitative parameters showed a significant difference between the Pygeum africanum group and the placebo group with respect to therapeutic response. The characteristic subjective symptoms of micturitional disorders, which were evaluated by the patients in a qualitative manner, were also significantly improved by administration of Pygeum africanum extract. Overall assessment at the end of therapy, showed that micturition improved in 66% of the patients treated with Pygeum africanum extract, as compared with an improvement of 31% in the placebo group. The difference was significant at the statistical level of p less than 0.001. During therapy with Pygeum africanum extract, gastrointestinal side effects occurred in 5 patients. Treatment was discontinued in three of those cases.

9. Ann Urol (Paris). 1984 May;18(3):193-5. [Controlled study of the effects of Pygeum africanum extract on the functional symptoms of prostatic adenoma]. [Article in French] Dufour B, Choquenet C, Revol M, Faure G, Jorest R. Two random groups of sixty patients each were given an extract of pygeum africanum in one group, and a placebo in the other. The results highlight the placebo effect (50 per cent of cases), and that the extract provided an overall improvement in the functional symptoms. The differences between the two treatments were statistically significant for nocturnal frequency, difficulty in starting micturition, and incomplete emptying of the bladder.