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PubMed1983

Pharmacological and toxicological studies on domiodol, a new mucolytic agent and expectorant.

The efficacy and toxicity of a compound containing organically bound iodine, 4-hydroxymethyl-2-indomethyl-2,3-dioxolane (domiodol), were evaluated. After oral and intravenous administration domiodol increased respiratory tract excretion indirectly measured on the basis of bronchial secretion in rats. Based on Kasé's method for quantitatively collecting respiratory tract fluid from rabbits, oral domiodol at the dose of 50-200 mg/kg induced a dose-related increase in respiratory tract fluid. In addition, oral domiodol (50 and 100 mg/kg) significantly reduced the viscosity of sputum collected quantitatively from rabbits with subacute bronchitis induced by long-term exposure to SO2 gas; the percentage decrease in viscosity was statistically correlated with the content of dry matter, protein and polysaccharides in the sputum. Domiodol had a marked cilio-excitatory effect, but did not affect experimental asthma in guinea-pigs or the respiratory resistance of anesthetized dogs. Subacute toxicity of the substance was investigated in rats. In serum biochemistry tests mean triglycerides were reduced in both sexes at dose levels higher than 32 mg/kg. Changes of T3 levels and a slight increase in thyroid weight accompanied by minimal histological alterations were observed in rats given high doses of domiodol. The majority of the changes observed were reversible after withdrawal of domiodol.

Airway Resistance↗
PubMed1982

[Expectorants].

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Clinical Trials as Topic↗
PubMed1980

[Effect of various phytotherapeutic expectorants on mucociliary transport].

The normal transport velocity of the isolated ciliated epithelium of the frog oesophagus was proved to be 228 +/- 15 micron . s-1. Bromhexin increased this transport rate 1.34 fold and KNEIPP-Hustentee 1.38 fold. The components of the cough tea had different effects on the mucociliar activity. The following ingredients increased the transport rate with falling rank order: Folia farfarae (coltsfoot), fructus foeniculi (fennel), and fructus anisi (anise). Herba plantaginis (plantain), flores verbasci (torch weed), and radix liquiritiae (liquorice) were ineffective whereas semen foenigraeci (foenugrec), radix althaeae (marsh mallow), and herba thymi (mother of thyme) had an inhibiting effect in raising rank order. The latter two groups of ingredients are constituents of the tea because of their attributed additional effects, e.g. protective effects due to mucous layers in the hypopharynx and spasmolytic, secretolytic and bactericide effects.

Animals↗