Table 1.

Comparison of HK-2 cell ultrastructure in different experimental groups.

	Control group	15 mmol/L group	30 mmol/L group	45 mmol/L group
Cell morphology	Normal	Slight swelling	Significant swelling	Significant swelling
Cell membrane	Intact and continuous	Partial membranous perforation and cytoplasmic content overflow	Membranous perforation and massive cytoplasm content overflow	Intact and continuous
Cytoplasm	The organelle structure was intact without damage	Vesiculation and expansion of endoplasmic reticulum	Vesiculation and expansion of endoplasmic reticulum, mitochondrial vacuolation, and Golgi swelling	Mitochondrial vacuolation and myeloid structure
Nucleus	No chromatin pyknosis or adherence to nuclear membrane	Partial nuclear chromatin pyknosis, margination and adhesion to the nuclear membrane	Disappearance of part of nucleoli, chromatin margination and adhesion to the nuclear membrane	No chromatin margination or adhesion to the nuclear membrane