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Erebidae
Erebidae (Leach, 1815), also called erebid moths, is the largest family of Lepidoptera with about 25,000 species in 18 subfamilies, including tiger moths, tussock moths, and underwings, within Noctuoidea.
Erectile dysfunction
Erectile dysfunction (ED, impotence): persistent inability to achieve or maintain an erection sufficient for sexual activity. Affects up to 52% of men aged 40–70; vasculogenic in up to 80% of cases; treated first with PDE5 inhibitors (sildenafil, tadalafil).
Erection
Erection (penile erection, tumescence): hardening and enlargement of the penis as blood fills the corpora cavernosa, driven by nitric oxide and nervous-system signals; three types, ED when impaired.
Erection Hardness Score
Erection Hardness Score (EHS, also EHGS): single-item patient-reported 0-4 scale of penile rigidity developed in 1998 for sildenafil trials, validated 2007 by Mulhall et al., used as an adjunct ED outcome measure.
Erector spinae muscles
Erector spinae (sacrospinalis): the intermediate layer of deep back muscles, three columns (spinalis, longissimus, iliocostalis) extending the spine from cranium to pelvis; target of the ESP block.
Erector spinae plane block
The erector spinae plane block, or thoracic erector spinae plane block, is a regional anesthesia technique that anesthetizes thoracic spinal nerves for perioperative and chronic pain relief.
EREG
EREG (epiregulin, EPR) is a human chromosome 4q13.3 gene encoding an EGF-family peptide growth factor that binds EGFR and ErbB4 as a low-affinity, long-acting ligand, released by ADAM17, and implicated in inflammation, wound healing, fibrosis, and cancer progression.
Eremias
Eremias (racerunners, desert and steppe runners) is a genus of about 40 lacertid lizard species from southeastern Europe, the Middle East, and Central and East Asia, established by Fitzinger in 1834 with Eremias velox as type species.
Eremochaetidae
Eremochaetidae is an extinct family of brachyceran flies from the Late Jurassic to Late Cretaceous of Asia and Burmese amber, erected by Ussatchov in 1968, with endoparasitoid females bearing needle-like ovipositors.
ERES trial
ERES trial (NCT04124172): Institut Guttmann pilot randomized triple-blind study of 1 Hz rTMS plus rehabilitation versus sham rTMS for paretic upper-limb function in subacute stroke, 24 planned participants.
Erethism
Erethism (erethism mercurialis, mad hatter syndrome) is a neuropsychiatric syndrome of chronic mercury poisoning: shyness, irritability, memory loss, insomnia. Linked to mercuric nitrate in 19th-century hat felt making; term coined by John Pearson in 1805.
Erez Raz
Erez Raz is an Israeli-born developmental and cell biologist, professor and institute director at the University of Münster, known for showing that chemokine SDF-1 guides zebrafish germ cell migration.
Erfonrilimab
Erfonrilimab (KN046, 依瑞利单抗), a PD-L1 x CTLA-4 bispecific antibody from Jiangsu Alphamab, in phase III trials (ENREACH-L-01 squamous NSCLC, ENREACH-PDAC-01 pancreatic cancer); phase II ORR 46% in first-line metastatic NSCLC.
ERG
ERG (ETS transcription factor ERG, Gene ID 2078) is a human ETS-family transcription factor on chromosome 21q22.2 regulating endothelium and hematopoiesis, and an oncogenic fusion partner in TMPRSS2-ERG prostate cancer, EWS-ERG Ewing sarcoma, and FUS-ERG AML.
ERG rearrangement analysis
ERG rearrangement analysis is a molecular diagnostic test that detects ERG gene rearrangements, most often the TMPRSS2–ERG fusion, to support prostate cancer diagnosis and risk stratification.
Ergalataxinae
Ergalataxinae (カゴメガイ亜科) is an accepted subfamily of murex sea snails (Muricidae) erected by Kuroda, Habe & Oyama in 1971, with about 31 genera including Ergalatax and Drupella, confirmed monophyletic by molecular phylogenies.
Ergasilidae
Ergasilidae, gill lice, family of cyclopoid copepods whose fertilized females parasitize fish gills while males and larvae are planktonic; about 30 genera, Ergasilus largest, important in aquaculture.
Ergine
Ergine, also called lysergic acid amide (LSA) or d-lysergamide, is a natural ergot alkaloid psychedelic in Convolvulaceae seeds (Hawaiian baby woodrose, morning glory), structurally similar to LSD, causing euphoria, hallucinations, nausea, and anxiety, with possible cluster headache benefit.
Ergocalciferol
Ergocalciferol (vitamin D2), a fat-soluble vitamin made by UV irradiation of ergosterol in yeast, used for vitamin D deficiency, hypoparathyroidism, and refractory rickets; raises serum 25(OH)D less than cholecalciferol (D3).
Ergocryptine
Ergocryptine (Ergocriptin) is a peptide ergot alkaloid of the ergoline family, produced by Claviceps purpurea, occurring as alpha and beta isomers and the parent compound of bromocriptine.
Ergoline
Ergoline is the tetracyclic indoloquinoline core of ergot alkaloids from Claviceps fungi, also called ergolines; basis of ergotamine, ergometrine, LSD, and dopamine agonists like bromocriptine and cabergoline.
Ergometry
Ergometry is a diagnostic method measuring cardiopulmonary responses during controlled exercise on a treadmill or bicycle ergometer, used to diagnose coronary artery disease and prescribe exercise training.
Ergonomics
Ergonomics, also known as human factors, is the science of how people interact with systems, applied to design that maximizes human well-being and overall system performance.
Ergonovine
Ergonovine (ergometrine, ergobasine) is a lysergic acid ergot alkaloid uterotonic used as a second-line drug for postpartum hemorrhage; discovered 1932-1935, first synthesized 1938, contraindicated in hypertension.
Ergospirometry
Ergospirometry, also called cardiopulmonary exercise testing (CPET), is a diagnostic method that measures respiratory gas exchange and ventilation during graded exercise to quantify cardiopulmonary fitness and identify exercise-limiting mechanisms.
Ergosterol (β-ol)
Ergosterol (β-ol), 24R-methyl-cholesta-5,7,22-trienol, is the principal membrane sterol of most fungi, absent in mammals, target of azoles, allylamines, and polyenes, and the UV-converted precursor of vitamin D2.
Ergosterol biosynthesis enzymes (ERG genes)
Ergosterol biosynthesis enzymes are the proteins encoded by ERG genes that fungi use to build ergosterol; in budding yeast the pathway spans 24 reactions and 25 enzymes.
Ergot
Ergot, fungi of the genus Claviceps (especially Claviceps purpurea), replaces grass and cereal seeds with toxic sclerotia; cause of ergotism or St. Anthony's fire and source of drugs like ergotamine and LSD.
Ergot alkaloid biosynthesis protein
Ergot alkaloid biosynthesis protein: database name for enzymes of the fungal EAS gene cluster, exemplified by EasH (UniProt G8GV69.1), a Claviceps purpurea dioxygenase with PDB structure 4NAO that cyclizes ergopeptide lactams.
Ergot sclerotium
Ergot sclerotium (Secale cornutum): the dark overwintering body of Claviceps purpurea replacing rye ovaries, containing 0.15-0.5% ergot alkaloids, cause of ergotism and source of pharmaceutical alkaloids.