Biomaterial Database

The skin-dwelling microfilariae of Monanema martini in Lemniscomys striatus as potential drug screening model for onchocerciasis: midazolam effect in vitro. 1988

U Laukamm-Josten, and O Bain

Landesinstitut für Tropenmedizin, Berlin, FRG.

The murid model of Monanema martini in Lemniscomys striatus was used to evaluate its potential as drug screening model in onchocerciasis. It had been described that the histopathology and the reaction to diethylcarbamazine treatment of this model closely resemble human onchocerciasis. To study further similarities the in vitro effect of midazolam was examined. Skin-dwelling microfilariae (mf) of M. martini were taken by skin snips and placed in either plain phosphat buffered saline or midazolam. Concentrations of 50 micrograms/ml midazolam significantly reduced motility within 15 min. The percentage of fully motile mf dropped to 9.2 and 1.4 after 15 and 30 min, respectively. In contrast to this finding fully motile mf were obtained after intraperitoneal injection of 60 mg/kg BW; but the technique used did not allow to evaluate the in vivo effect of midazolam. The similarities with the human disease and the finding that midazolam paralyses mf of M. martini like mf of O. volvulus in vitro indicate the potential of the model for simulating human onchocerciasis.

UI	MeSH Term	Description	Entries
D008842	Microfilariae	The prelarval stage of Filarioidea found in the blood and tissues of mammals, birds and intermediate hosts (vector).	Microfilaria
D008874	Midazolam	A short-acting hypnotic-sedative drug with anxiolytic and amnestic properties. It is used in dentistry, cardiac surgery, endoscopic procedures, as preanesthetic medication, and as an adjunct to local anesthesia. The short duration and cardiorespiratory stability makes it useful in poor-risk, elderly, and cardiac patients. It is water-soluble at pH less than 4 and lipid-soluble at physiological pH.	Dormicum,Midazolam Hydrochloride,Midazolam Maleate,Ro 21-3981,Versed,Hydrochloride, Midazolam,Maleate, Midazolam,Ro 21 3981,Ro 213981
D009115	Muridae	A family of the order Rodentia containing 250 genera including the two genera Mus (MICE) and Rattus (RATS), from which the laboratory inbred strains are developed. The fifteen subfamilies are SIGMODONTINAE (New World mice and rats), CRICETINAE, Spalacinae, Myospalacinae, Lophiomyinae, ARVICOLINAE, Platacanthomyinae, Nesomyinae, Otomyinae, Rhizomyinae, GERBILLINAE, Dendromurinae, Cricetomyinae, MURINAE (Old World mice and rats), and Hydromyinae.	Murids,Murid
D009855	Onchocerciasis	Infection with nematodes of the genus ONCHOCERCA. Characteristics include the presence of firm subcutaneous nodules filled with adult worms, PRURITUS, and ocular lesions.	Onchocerciases
D002465	Cell Movement	The movement of cells from one location to another. Distinguish from CYTOKINESIS which is the process of dividing the CYTOPLASM of a cell.	Cell Migration,Locomotion, Cell,Migration, Cell,Motility, Cell,Movement, Cell,Cell Locomotion,Cell Motility,Cell Movements,Movements, Cell
D004195	Disease Models, Animal	Naturally-occurring or experimentally-induced animal diseases with pathological processes analogous to human diseases.	Animal Disease Model,Animal Disease Models,Disease Model, Animal
D004353	Drug Evaluation, Preclinical	Preclinical testing of drugs in experimental animals or in vitro for their biological and toxic effects and potential clinical applications.	Drug Screening,Evaluation Studies, Drug, Pre-Clinical,Drug Evaluation Studies, Preclinical,Drug Evaluations, Preclinical,Evaluation Studies, Drug, Preclinical,Evaluation, Preclinical Drug,Evaluations, Preclinical Drug,Medicinal Plants Testing, Preclinical,Preclinical Drug Evaluation,Preclinical Drug Evaluations,Drug Screenings,Screening, Drug,Screenings, Drug
D004431	Ear, External	The outer part of the hearing system of the body. It includes the shell-like EAR AURICLE which collects sound, and the EXTERNAL EAR CANAL, the TYMPANIC MEMBRANE, and the EXTERNAL EAR CARTILAGES.	External Ear,Outer Ear,Ear, Outer,Ears, External,Ears, Outer,External Ears,Outer Ears
D005370	Filarioidea	A superfamily of nematodes of the order SPIRURIDA. Members possess a filiform body and a mouth surrounded by papillae.	Litomosoides,Filarioideas,Litomosoide
D000818	Animals	Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA.	Animal,Metazoa,Animalia