A composition for testing periodontal diseases which diagnoses or prognosticates contraction or progress of the diseases or diagnoses the therapeutic value by promptly determining peptidase-like enzymatic activity in a specimen. The composition is a combination of a compound of the formula [1] or [2] or a mixture thereof, a chromogen and an oxidase:
X-T-Pro-Y [1] or X′-Z′-Arg-Y′ [2]
wherein Pro is proline residue; Arg is arginine residue; X and X′ are hydrogen or an amino protecting group, respectively; Y and Y′ are a residue of a compound which can increase oxidation reaction rate of the chromogen with an oxidase in the presence of oxygen and is attached to the C-terminal of Pro or Arg, respectively; and T and Z′ are an amino acid or peptide residue composed of 0 to 4 amino acids or their protected derivatives, the C-terminal of which is attached to the N-terminal of Pro or Arg, respectively.
一种用于检测牙周疾病的组合物,通过迅速测定标本中肽酶样酶的活性,诊断或预示疾病的收缩或进展,或诊断治疗价值。该组合物由式[1]或[2]化合物或其混合物、发色剂和氧化酶组合而成:
X-T-Pro-Y[1]或X′-Z′-Arg-Y′[2]
其中,Pro 是脯
氨酸残基;Arg 是精
氨酸残基;X 和 X′分别是氢或
氨基保护基团;Y 和 Y′是一种化合物的残基,该化合物可在有氧的情况下提高发色剂与氧化酶的氧化反应速率,并分别连接到 Pro 或 Arg 的 C-末端;T和Z′分别是由0至4个
氨基酸或其保护衍
生物组成的
氨基酸或肽残基,其C端分别连接到Pro或Arg的N端。