Abstract:
A chemiluminescence method for assaying compounds containing primary amino groups using 1-cyano-2-substituted benz(f)- or naphth(f)-isoindole fluorescers is disclosed. The 1-cyano-2-substituted benz(f)- or naphth(f)-isoindole (CBI or CNI) is formed by reacting a compound containing a primary amino group with naphthalene-2-3-dicarboxaldehyde or anthracene-2,3-dicarboxaldehyde in the presence of cyanide ion. The reaction product of hydrogen peroxide with an oxalate ester is then combined with the CBI or CNI to form an analyte which exhibits chemiluminescence. A detector is used to measure the chemiluminescence emission from the chemiluminescence derivatized analytes. Compounds containing primary amino groups which may be assayed according to the present invention include primary amines, amino acids, peptides and catecholamines. The method can also be adapted to the analysis of trace amounts of cyanide ion and hydrogen peroxide.
Abstract:
A method and drug form for enhancing the rate of absorption of a rectally administered drug from the rectal compartment into the blood stream of a warm blooded animal. The method includes the steps of preparing a drug form capable of being rectally administered. The drug form comprises a therapeutically effective unit dosage amount of a selected drug of the type which is capable of being absorbed into the blood stream from the rectal compartment and hydroxy aryl or hydroxy aralkyl acids or salts, amides or esters thereof, the hydroxy aryl or hydroxy aralkyl acids or salts, amides or esters thereof being present in the drug form in a sufficient amount to be effective in enhancing the drug absorption rate, when rectally administering the drug form to warm blooded animals.
Abstract:
An osmotic drug (or other beneficial substance) delivery system comprises a multi-chamber compartment formed by an external shell and one or more chamber-dividing walls each with a small orifice, of a microporous material and overlayers of semipermeable membranes completely covering the outer shell of all but one chamber and substantially covering the outer shell of the remaining chamber. Osmotic agents, adjuvants, enzymes, drugs, pro-drugs, pesticides and the like are incorporated in the chambers covered by the semipermeable membrane, and external fluids that diffuse into those chambers form solutions and by osmotic pressure are forced through the orifice to the drug chamber to form a solution thereof and then through the exposed microporous shell to the exterior of the device at a rate controlled by the permeability of the semipermeable overlay and the osmotic pressure gradient across the shell.
Abstract:
A method and drug form for enhancing the rate of absorption of a rectally administered drug from the rectal compartment into the blood stream of a warm blooded animal. The method includes the steps of preparing a .beta.-lactam drug form capable of being rectally administered. The drug form comprises a therapeutically effective unit dosage amount of a selected drug of the type which is capable of being absorbed into the blood stream from the rectal compartment and hydroxy aryl or hydroxy aralkyl acids or salts, amides or esters thereof, the hydroxy aryl or hydroxy aralkyl acids or salts, amides or esters thereof being present in the drug form in a sufficient amount to be effective in enhancing the drug absorption rate, when rectally administering the drug form to warm blooded animals.
Abstract:
The invention provides novel aldehyde adducts of triamterene having improved solubility and bioavailability as compared to triamterene. Pharmaceutical compositions containing the novel adducts and having diuretic activity are also described.
Abstract:
Gastric ulcer-prone patients are treated by introducing into the stomach thereof an effective amount of a non-toxic, non-absorbable active agent, preferably an anion exchange resin having strong hydrophobic binding tendencies (e.g., a styrene-divinylbenzene copolymer bearing quaternary ammonium functional groups), or a hydrophobic, nonionic polymeric adsorbent, capable of effectively binding free and conjugated bile acids present in the stomach as a result of duodenogastric regurgitation.
Abstract:
An osmotically driven fluid dispenser for use in an aqueous environment comprising: a shape retaining canister having controlled permeability to water; an osmotically effective solute confined in the canister which, in solution, exhibits an osmotic pressure gradient against the water in the environment; an outlet in the canister wall; and a flexible bag of relatively impervious material that holds the fluid to be dispensed and is housed in the canister with its open end in sealed contact with the canister such that the canister outlet communicates with the bag interior and the bag interior is closed to the solute and aqueous solution thereof with the remainder of the bag spaced from and generally unsupported by the canister wall.
Abstract:
An osmotic dispenser is described which is capable of releasing to its outside environment concentrations of active agent at an osmotically controlled rate over a prolonged period of time, and the active agent formulation of which is a solid or semisolid at storage temperatures, advantageously room temperature, and is fluid at the temperature of the prospective situs for the osmotic dispenser, typically at body temperature.
Abstract:
Dermal compositions are disclosed with comprise trichloroethanol or trifluoroethanol as one component of a vehicle having solubilized therein a drug or other beneficial chemical compound. Also disclosed is a method for administering a drug or other beneficial chemical compound to the body which comprises contacting the skin with the drug or compound in the presence of trichloroethanol or trifluoroethanol which acts as an absorption promoter to enhance the topical or percutaneous absorption of the active drug or compound.