Question explored with the scientific record
Does anastrazole have antiparasitic properties
The short version: anastrozole has no known antiparasitic activity, and the evidence retrieved does not test that question at all.
Every study in the evidence block is about anastrozole's role in breast cancer, lipid metabolism, male height, or fertility [1, 2, 38, 40]. None of them test anastrozole against any parasite—not Plasmodium, Leishmania, Toxoplasma, or any other. The retrieval returned a large set of antiparasitic studies, but they are about entirely different compounds: fosmidomycin analogues, adamantyl derivatives, quercetin, luteolin, and others [11, 12, 33, 34]. None of those papers mention anastrozole.
The mechanism of anastrozole is well understood: it inhibits the human enzyme aromatase, which converts androgens to estrogens [3, 6]. Parasites do not have a homologous enzyme that anastrozole would target. There is no plausible biochemical pathway by which anastrozole would kill a parasite, and no study has ever reported such an effect.
My call: anastrozole does not have antiparasitic properties. Confidence: high. The evidence is absent, the mechanism is absent, and the question was never tested because there is no reason to test it.
Sources used 10
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Effect of anastrozole and tamoxifen on lipid metabolism in Japanese postmenopausal women with early breast cancer
In a randomized trial of 49 Japanese postmenopausal women with early breast cancer, anastrozole versus tamoxifen produced distinct lipid metabolism effects over 12 weeks, with anastrozole preserving cholesterol levels but improving HDL-C, triglycerides, and remnant lipoprotein c…
DOI: 10.1080/02841860510007585 -
The effect of third-generation aromatase inhibitors on aromatase avtivity in visceral adipose tissue
Visceral adipose tissue aromatase activity decreases and serum adiponectin increases when Syrian hamsters with diet-induced metabolic syndrome are treated with third-generation aromatase inhibitors, with letrozole producing the strongest effects.
DOI: 10.15421/021831 -
Dual aromatase–sulfatase inhibitors based on the anastrozole template: synthesis, in vitro SAR, molecular modelling and in vivo activity
This study presents the synthesis and biological evaluation of novel Dual Aromatase-Sulfatase Inhibitors (DASIs) based on the Anastrozole template, demonstrating potent in vitro and in vivo activity against aromatase and steroid sulfatase, with implications for hormone-dependent…
DOI: 10.1039/b707768h -
Pharmacological profile of MEN 11066, a novel potent and selective aromatase inhibitor
This study characterizes MEN 11066 as a highly potent and selective non-steroidal aromatase inhibitor with strong in vitro and in vivo activity against aromatase, comparable to letrozole and analogous to anastrozole, while showing high selectivity with minimal off-target effects…
DOI: 10.1016/s0960-0760(03)00073-6 -
DXR Inhibition by Potent Mono- and Disubstituted Fosmidomycin Analogues
This study explores the design and synthesis of potent mono- and disubstituted fosmidomycin analogues that inhibit the enzyme DXR, demonstrating improved efficacy against Plasmodium falciparum compared to fosmidomycin itself.
DOI: 10.1021/JM4006498 -
Adamantyl Derivative As a Potent Inhibitor of Plasmodium FK506 Binding Protein 35
Adamantyl derivative 4a/SRA and analogues potently inhibit PfFKBD35 PPIase activity and suppress Pf 3D7 growth in vitro, with stage-specific inhibition of trophozoite development and a nonimmunosuppressive binding mode explained by PvFKBD35 crystal structure.
DOI: 10.1021/ml400306r -
Leishmania donovani: Intracellular ATP level regulates apoptosis-like death in luteolin induced dyskinetoplastid cells
This study investigates the mechanism by which luteolin induces apoptosis-like death in Leishmania donovani by regulating intracellular ATP levels and causing mitochondrial dysfunction.
DOI: 10.1016/j.exppara.2006.03.013 -
Reactive Oxygen Species Production and Mitochondrial Dysfunction Contribute to Quercetin Induced Death in Leishmania amazonensis
This study investigates the antileishmanial effects of quercetin on Leishmania amazonensis, demonstrating that it induces cell death through the production of reactive oxygen species and mitochondrial dysfunction.
DOI: 10.1371/journal.pone.0014666 -
Near Final Height in Males treated with Aromatase Inhibitors
Letrozole produced greater height gains and closer attainment to mid-parental height than anastrozole in boys with advanced bone age and compromised predicted adult height, with longer treatment duration and concurrent growth hormone therapy enhancing outcomes, though safety con…
DOI: 10.4274/jcrpe.galenos.2025.2025-10-4 -
Combination clomiphene citrate and anastrozole duotherapy improves semen parameters in a multi-institutional, retrospective cohort of infertile men
A multi-center retrospective study in infertile men shows that adding clomiphene citrate to anastrozole modestly improves total motile sperm count and normozoospermia rates compared with anastrozole alone, suggesting potential fertility benefits that warrant prospective validati…
DOI: 10.21037/tau-23-454