In the sentence extracted from biomedical literature, identify all the chemical entities. The required answer format is the same sentence with HTML <span> tags to mark up specific entities. 
### Entity Markup Guides:
Use <span class="chemical"> to denote a chemical.

### Input Text: Maleate - induced renal injury included increase in renal vascular resistance and in the urinary excretion of total protein , glucose , sodium , neutrophil gelatinase - associated lipocalin ( NGAL ) and N - acetyl b - D - glucosaminidase ( NAG ) , upregulation of kidney injury molecule ( KIM ) - 1 , decrease in renal blood flow and claudin - 2 expression besides of necrosis and apoptosis of tubular cells on 24 h .
### Output Text:
<span class="chemical">Maleate</span> - induced renal injury included increase in renal vascular resistance and in the urinary excretion of total protein , <span class="chemical">glucose</span> , <span class="chemical">sodium</span> , neutrophil gelatinase - associated lipocalin ( NGAL ) and N - acetyl b - D - glucosaminidase ( NAG ) , upregulation of kidney injury molecule ( KIM ) - 1 , decrease in renal blood flow and claudin - 2 expression besides of necrosis and apoptosis of tubular cells on 24 h . 