Wormwood (Artemisia absinthium) suppresses tumour necrosis factor
alpha and accelerates healing in patients with Crohn's disease - A controlled
clinical trial.
Krebs S, Omer TN, Omer B.
Abstract
Suppression of tumour necrosis factor alpha (TNF-alpha) and other interleukins
by wormwood (Artemisia absinthium) extracts were reported recently in in vitro
studies. The aim of the present study was to find out if this effect can be
also be observed in Crohn's Disease (CD) patients where TNF-alpha appears to
play an important role. In a controlled trial, 10 randomly selected patients
suffering from CD were given in addition to their basic CD therapy 3x750mg dried
powdered wormwood for 6 weeks. Ten patients, also randomly selected who met
the inclusion criteria served as control group. Minimum score of 200 on Crohn's
Disease Activity Index (CDAI) was required at baseline for inclusion in each
group. Patients who received infliximab or similar were excluded from the trial.
TNF-alpha level in serum were measured at baseline, and after three and six
weeks. During this period all concomitant CD medications was maintained at the
baseline dose levels. Average serum TNF-alpha level fell from 24.5+/-3.5pg/ml
at baseline to 8.0+/-2.5pg/ml after six weeks. The corresponding levels in the
control group were 25.7+/-4.6 (week 0), and 21.1+/-3.2 (week 6). On the clinical
side, CDAI scores fell from 275+/-15 to below 175+/-12 in wormwood group with
remission of symptoms in eight patients (CDAI score below 170 or reduction by
70 points), compared to only two in the placebo group (CDAI of placebo group
282+/-11 at baseline and 230+/-14 on week 6). IBDQ also reflected accelerated
clinical response with wormwood. Of clinical significance were the findings
that wormwood also improved mood of the CD patients, as reflected in Hamilton's
Depression Scale. These findings provide a base to test wormwood in clinical
conditions thought to be mediated by increased production of pro-inflammatory
cytokines such as TNF-alpha.
PMID: 19962291 DOI: 10.1016/j.phymed.2009.10.013 Phytomedicine. 2010 Apr;17(5):305-9.
doi: 10.1016/j.phymed.2009.10.013. Epub 2009 Dec 3. ncbi.nlm.nih.gov
Role of wormwood (Artemisia absinthium) extract on oxidative stress
in ameliorating lead induced haematotoxicity.
Kharoubi O, Slimani M, Krouf D, Seddik L, Aoues A.
Abstract
Effects of ROS generation have been postulated to be major contributors to lead-exposure
related disease. The aim of the study was to investigate the effect of aqueous
extract of wormwood (Artemisia absinthium) on oxidative stress in rats protractedly
exposed to lead. Aqueous extract of wormwood plant was administered orally (200
mg x kg(-1) body weight). Plasma vitamin C, E and non-protein thiol concentrations,
red blood cells (RBC) thiobarbituric acid reactive substances, reduced glutathione
levels and haemolysis test were evaluated. In addition, RBC antioxidant enzymes
activities such as superoxide dismutases, catalase, glutathione peroxidase,
glutathione reductase were also estimated. After 11-weeks, significant decreases
of plasma vitamin C, E, non protein-thiol (NP-SH) and RBC-reduced glutathione
levels were observed in Pb compared to control group (-32.9%, -57.1%, -53.1%,
-33.9%, respectively); superoxide dismutase, glutathione peroxidase, uric aminolevulinic
acid and haemolysis test significantly increased in Pb compared to control group
(+64.3%, +40.3%, +145%, +44.3%, respectively). In our investigation, after 4-weeks
of treatment all treated groups did not show any difference compared to the
control group, except for glutathione peroxidase and RBC-superoxide dismutase
activity (-15.7% and +16.4%, respectively). The findings of this study suggest
that wormwood (Artemisia absinthium) extract restored the enzymes activities
perturbed by exposure to lead, and had a protective role against lipid peroxidation.
PMID: 20161947 PMCID: PMC2816558 Afr J Tradit Complement Altern Med. 2008 Apr
10;5(3):263-70. ncbi.nlm.nih.gov
Wormwood (Artemisia absinthium) for poorly responsive early-stage IgA
nephropathy: a pilot uncontrolled trial.
Krebs S, Omer B, Omer TN, Fliser D.
Abstract
BACKGROUND:
Inhibition of the renin-angiotensin system is a widely accepted approach to
treat immunoglobulin A (IgA) nephropathy, whereas the role of fish oils as a
supplement is controversial. Tumor necrosis factor a (TNF-a) is considered to
be involved in the pathophysiologic process of this disorder. Recent in vitro
and clinical observations that wormwood can decrease TNF-a levels has led us
to investigate the effect of wormwood as a supplement in patients with IgA nephropathy.
STUDY DESIGN:
Pilot uncontrolled trial.
SETTING & PARTICIPANTS:
10 patients with biopsy-proven IgA nephropathy, normal kidney function, and
a history of at least 3 months of proteinuria with protein excretion > 500
mg/d and < 3,500 mg/d despite ongoing dual renin-angiotensin system blockade.
INTERVENTION:
The selected patients were given supplements of 1.8 g/d of thujone-free wormwood
preparation for 6 months without discontinuing their renin-angiotensin system
blockade.
OUTCOMES:
Proteinuria and blood pressure after intervention compared with baseline values.
MEASUREMENTS:
Monthly assessment of urine protein-creatinine ratio and blood pressure during
the observation period.
RESULTS:
Urine protein-creatinine ratio decreased significantly from 2,340 ± 530
to 315 ± 200 mg/g at the end of the supplementation period (P < 0.001)
and was stable during the supplement-free follow-up of another 6 months. Estimated
glomerular filtration rate and endogenous creatinine clearance were unchanged
during the entire study period. There was a moderate, but significant, decrease
(P < 0.002) in mean arterial blood pressure.
LIMITATIONS:
Open uncontrolled trial including a small number of patients.
CONCLUSIONS:
Thujone-free wormwood with its favorable safety profile can be an alternative
supplement to manage proteinuria in patients with IgA nephropathy.
TRIAL REGISTRATION:
ClinicalTrials.gov NCT01126931.
PMID: 20843592 DOI: 10.1053/j.ajkd.2010.06.025 Am J Kidney Dis. 2010 Dec;56(6):1095-9.
doi: 10.1053/j.ajkd.2010.06.025. Epub 2010 Sep 16. ncbi.nlm.nih.gov
Steroid-sparing effect of wormwood (Artemisia absinthium) in Crohn's
disease: a double-blind placebo-controlled study.
Omer B, Krebs S, Omer H, Noor TO.
Abstract
In this double-blind study carried out at five sites in Germany, 40 patients
suffering from Crohn's disease receiving a stable daily dose of steroids at
an equivalent of 40 mg or less of prednisone for at least 3 weeks were administered
a herbal blend containing wormwood herb (3 x 500 mg/day) or a placebo for 10
weeks. Besides steroids, 5-aminosalicylates, if dose remained constant for at
least 4 weeks prior to entering the trial and/or azathioprine, stable dose for
at least 8 weeks, or methotrexate, stable dose for at least 6 weeks, were permitted
as concomitant medications. The recruited 40 patients - 20 in each treatment
group, were evaluated with the help of a Crohn's Disease Activity Index (CDAI)
questionnaire, an Inflammatory Bowel Disease Questionnaire (IBDQ), the 21-item
Hamilton Depression Scale (HAMD) and an 8-item Visual Analogue Scale (VA-Scale)
in 2-week intervals during the first 10 study weeks, and then at week 12, 16
and 20, which were the trial-medication free observation periods. The initial
stable dose of steroids was maintained until week 2, after that a defined tapering
schedule was started so that at the start of week 10 all the patients were free
of steroids. At the end of week 10 the trial medication was also discontinued.
The concomitant medications were maintained at the same dose levels till the
end of the observation period that was the end of week 20. There was a steady
improvement in CD symptoms in 18 patients (90%) who received wormwood in spite
of tapering of steroids as shown by CDA-Index, IBDQ, HAMD, and VAS. After 8
weeks of treatment with wormwood there was almost complete remission of symptoms
in 13 (65%) patients in this group as compared to none in the placebo group.
This remission persisted till the end of the observation period that was week
20, and the addition of steroids was not necessary. In two (10%) patients did
the re-starting of corticoids become necessary? On the other hand, the CD conditions
of the patients who received the placebo deteriorated after the tapering of
steroids, and re-starting steroids became necessary in 16 (80%) patients in
this group after week 10. These results strongly suggest that wormwood has a
steroid sparing effect. The improvements in HAMD scores indicate that wormwood
also has an effect on the mood and quality of life of CD patients, which is
not achieved by other standard medications.
PMID: 17240130 DOI: 10.1016/j.phymed.2007.01.001 Phytomedicine. 2007 Feb;14(2-3):87-95.
Epub 2007 Jan 19. ncbi.nlm.nih.gov
Artemisia absinthium (AA): a novel potential complementary and alternative
medicine for breast cancer.
Shafi G, Hasan TN, Syed NA, Al-Hazzani AA, Alshatwi AA, Jyothi A, Munshi A.
Abstract
Natural products have become increasingly important in pharmaceutical discoveries,
and traditional herbalism has been a pioneering specialty in biomedical science.
The search for effective plant-derived anticancer agents has continued to gain
momentum in recent years. The present study aimed to investigate the role of
crude extracts of the aerial parts of Artemisia absinthium (AA) extract in modulating
intracellular signaling mechanisms, in particular its ability to inhibit cell
proliferation and promote apoptosis in a human breast carcinoma estrogenic-unresponsive
cell line, MDA-MB-231, and an estrogenic-responsive cell line, MCF-7. Cells
were incubated with various concentrations of AA, and anti-proliferative activity
was assessed by MTT assays, fluorescence microscopy after propidium iodide staining,
western blotting and cell cycle analysis. Cell survival assays indicated that
AA was cytotoxic to both MDA-MB-231 and MCF-7 cells. The morphological features
typical of nucleic staining and the accumulation of sub-G1 peak revealed that
the extract triggered apoptosis. Treatment with 25 µg/mL AA resulted in
activation of caspase-7 and upregulation of Bad in MCF-7 cells, while exposure
to 20 µg/mL AA induced upregulation of Bcl-2 protein in a time-dependent
response in MDA-MB-231 cells. Both MEK1/2 and ERK1/2 was inactivated in both
cell lines after AA treatment in a time-dependent manner. These results suggest
that AA-induced anti-proliferative effects on human breast cancer cells could
possibly trigger apoptosis in both cell lines through the modulation of Bcl-2
family proteins and the MEK/ERK pathway. This might lead to its possible development
as a therapeutic agent for breast cancer following further investigations.
PMID: 22311047 DOI: 10.1007/s11033-012-1569-0
Mol Biol Rep. 2012 Jul;39(7):7373-9. doi: 10.1007/s11033-012-1569-0. Epub 2012
Feb 5. ncbi.nlm.nih.gov
Preventive and curative effects of Artemisia absinthium on acetaminophen
and CCl4-induced hepatotoxicity.
Gilani AH, Janbaz KH.
Abstract
1. Effect of aqueous-methanolic extract of Artemisia absinthium (Compositae)
was investigated against acetaminophen- and CCl4-induced hepatic damage. 2.
Acetaminophen produced 100% mortality at the dose of 1 g/kg in mice while pretreatment
of animals with plant extract (500 mg/kg) reduced the death rate to 20%. 3.
Pretreatment of rats with plant extract (500 mg/kg, orally twice daily for two
days) prevented (P < 0.01) the acetaminophen (640 mg/kg) as well as CCl4
(1.5 ml/kg)-induced rise in serum transaminases (GOT and GPT). 4. Post-treatment
with three successive doses of extract (500 mg/kg, 6 hr) restricted the hepatic
damage induced by acetaminophen (P < 0.01) but CCl4-induced hepatotoxicity
was not altered (P > 0.05). 5. Plant extract (500 mg/kg) caused significant
prolongation (P < 0.05) in pentobarbital (75 mg/kg)-induced sleep as well
as increased strychnine-induced lethality in mice suggestive of inhibitory effect
on microsomal drug metabolizing enzymes (MDME). 6. These results indicate that
the crude extract of Artemisia absinthium exhibits hepatoprotective action partly
through MDME inhibitory action and validates the traditional use of plant in
hepatic damage.
PMID: 7590079 Gen Pharmacol. 1995 Mar;26(2):309-15. ncbi.nlm.nih.gov
Thirteen-week repeated dose toxicity study of wormwood (Artemisia absinthium)
extract in rats.
Muto T, Watanabe T, Okamura M, Moto M, Kashida Y, Mitsumori K.
Abstract
Wormwood, Artemisia absinthium, is a very bitter plant, and its extract has
been used as food additives such as seasonings for food and drinks. A 13-week
repeated dose toxicity study of wormwood extract was performed in both sexes
of Wistar Hannover (GALAS) rats. Rats were divided into 4 groups consisting
of 10 males and 10 females each, and were given water containing 0, 0.125, 0.5,
or 2% wormwood extract. All rats had survived at the end of the study, and no
changes indicating obvious toxicities that are attributable to the treatment
of wormwood extract were observed in the body weights, hematological and serum
biochemical examinations, organ weights, and histopathological examinations.
Based on the results of the present study, the NOAEL (no-observed-adverse-effect-level)
of wormwood extract of Wistar Hannover rats was estimated to be 2% (equivalent
to 1.27 g/kg/day in males and 2.06 g/kg/day in females) or more.
PMID: 14746350 J Toxicol Sci. 2003 Dec;28(5):471-8. ncbi.nlm.nih.gov