Table 2 Effect of NMN on the body weight, testis weight and sperm parameters in diabetic mice

Group	Body weight (g)	Testis weight (mg)	Sperm count (×10 7)	Abnormal sperm Number (×10 7)	Abnormal sperm rate (%)
	Pre-treatment	After treatment
Control	21.34±0.83	23.72±2.73	164.54±12.61	7.87±1.13	1.76±0.25	22.44±1.83
DM	19.48±0.75**	15.64±1.97**	138.45±20.40*	2.70±1.14**	3.30±1.01*	65.76±16.88**
DM+NMN	19.46±0.67**	20.52±0.82 ##	166.20±4.30 #	6.75±0.53 ##	1.95±0.86 #	22.69±12.80 ##

* P<0.05, ** P<0.01 vs control; ^# P< 0.05, ^## P<0.01 vs DM.