求翻译：但许多研究已证实，它与中脑黑质多巴胺神经元变性、坏死存在着一定的因果关系，若能针对危险因素采取相应的预防措施，对预防帕金森病的发病和延缓病程进展肯定是有益的。是什么意思？

However, many studies have confirmed it with substantia nigra dopamine neuron degeneration, necrosis, there is some causal relationship, if risk factors for taking appropriate preventive measures to prevent and delay the onset of Parkinson's disease progression is certainly useful of.

However, many studies have confirmed that it and the brain black quality dopamine neuronal necrosis transsexual, there is a certain causal relationship aimed at the risk factors, if they can take appropriate preventive measures, to prevent Parkinson's disease incidence and stay the course is certain

But many research confirmed that, it with the mesencephalon opsoninum multi-Pakistan amine neuron denaturation, necrosis has certain causal relation, if can aim at the dangerous factor to take the corresponding preventive measure, to prevents the morbidity and the postponement course of an illness w

Many studies have confirmed that it and degeneration of midbrain dopaminergic neurons in substantia, necrosis of the existence of certain causal relationships, if they can take appropriate precautions against risk factors, prevention and delay of onset of Parkinson's disease progression is certainly

But a lot of research has already verified, it, neuronal sex change of dopamine of black quality of the midbrain, necrosised have certain causality, if can take the corresponding preventive action to the dangerous factor, to preventing the morbidity and delaying the progress of course of disease of