Abstract: The present invention relates to an agent which slows down the heart rate which has an excellent controlling ability in diagnostic imaging comprising a short-acting ?-blocker (e.g. landiolol hydrochloride or esmolol hydrochloride). The short-acting ?-blocker has a property of slowing down the heart rate and it can temporarily suppress the tachycardia at diagnosis. According to the dose and the method of administration, it can control the period for the heart rate adjustment. Also, the present invention relates to a diagnostic imaging auxiliary comprising a short-acting ?-blocker as active ingredient.

Abstract: The invention relates to a neurodegenerative disease treating agent for parenteral use, which comprises (2R)-2-propyloctanoic acid or a salt thereof. Since the neurodegenerative disease treating agent of the present invention comprising (2R)-2-propyloctanoic acid or a salt thereof, characterized in that a dosage exceeding about 100 mg per dose is parenterally administered, shows neuropathy improving effect and S-100? increase inhibiting effect in patients with cerebral infarction, it is useful for the treatment of neurodegenerative diseases including cerebral infarction. In addition, it is also useful as a neural regeneration agent after transplantation.

Abstract: The present invention relates to preventive and/or therapeutic agents for Meniere's disease, which comprise a leukotriene antagonist (such as pranlukast hydrate) as an active ingredient. Leukotriene antagonists (such as pranlukast hydrate) are effective in ameliorating various symptoms, such as hearing impairment, tinnitus, a feeling of fullness in the ear and vertigo, thus being useful as a preventive and/or therapeutic agent for Meniere's disease.

Abstract: The invention relates to a neurodegenerative disease treating agent for parenteral use, which comprises (2R)-2-propyloctanoic acid or a salt thereof. Since the neurodegenerative disease treating agent of the present invention comprising (2R)-2-propyloctanoic acid or a salt thereof, characterized in that a dosage exceeding about 100 mg per dose is parenterally administered, shows neuropathy improving effect and S-100 ? increase inhibiting effect in patients with cerebral infarction, it is useful for the treatment of neurodegenerative diseases including cerebral infarction. In addition, it is also useful as a neural regeneration agent after transplantation.

Abstract: The present invention relates to an agent which slows down the heart rate which has an excellent controlling ability in diagnostic imaging comprising a short-acting ?-blocker (e.g. landiolol hydrochloride or esmolol hydrochloride). The short-acting ?-blocker has a property of slowing down the heart rate and it can temporarily suppress the tachycardia at diagnosis. According to the dose and the method of administration, it can control the period for the heart rate adjustment. Also, the present invention relates to a diagnostic imaging auxiliary comprising a short-acting ?-blocker as active ingredient.