Hermite Polynomial

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In a famous paper by Ait-Sahalia I have found this expression for the Hermite polynomial (pp 252, line -5):

$$ H_{j+1}^{\prime}\left(z\right)=-(1+j)\,H_j(z)\quad (1) $$

where $H_j$ is the $j$-th Hermite polynomial. The only relationship that links $H_{j+1}$ with $H_j$ that I know is

$$ H_{j+1}(z) = z\,H_j(z)-H_{j}^{\prime}(z)\quad (2) $$

which does not imply (1). More precisely taking the derivative of (2) I get

$$ H_{j+1}^{\prime}(z) = H_j(z)+z\,H^{\prime}_j(z)-H_{j}^{\prime\prime}(z). $$

So I am wondering where relationship (1) comes from.