Effects of green tea supplementation on inflammation markers, antioxidant status and blood pressure in NaCl-induced hypertensive rat model

Figures & data

Table 1. Body mass of rats at the end of the experiment.

	Group	N	Mean	Median	Minimum	Maximum	SD	p-value
Body mass (g)	SK	10	287.50	286.00	265.00	315.00	16.22	0.7174
	SH2	10	282.90	282.00	267.00	309.00	14.70
	SH4	10	286.70	288.00	259.00	312.00	16.98

SD- standard deviation

Table 2. Blood pressure values in each group of rats at the end of the experiment.

	Group	N	Mean	Median	Minimum	Maximum	SD	p-value
SBP (mmHg)	SK	10	154.5	155.8	117.7	172.3	16.7	0.0066
	SH2	10	126.0	131.9	86.1	160.8	22.6
	SH4	10	134.5	135.0	117.7	152.3	10.1
DBP (mmHg)	SK	10	95.2	95.0	90.0	102.3	4.4	0.0033
	SH2	10	82.5	76.9	53.8	116.9	20.5
	SH4	10	70.6	69.6	46.1	90.8	12.3

The parameters in all groups were consistent with normal distribution (Shapiro–Wilk test). SBP, systolic blood pressure; DBP, diastolic blood pressure; SD, standard deviation.

Table 3. The concentrations of inflammatory and oxidative stress parameters in a model of hypertension in each group of rats at the end of the experiment.

	Group	N	Mean	Median	Mininum	Maximum	SD	p-value
TNF-α (ng ml^–1)	SK	10	3.08	3.37	2.02	4.10	0.76	0.0095
	SH2	10	2.63	2.70	2.00	3.20	0.36
	SH4	10	2.20	1.98	1.76	2.91	0.43
CRP (ng ml^–1)	SK	10	82.20	83.50	75.00	87.00	3.77	0.07
	SH2	10	79.80	79.50	76.00	84.00	2.74
	SH4	10	78.70	78.50	75.00	84.00	3.16
TAS (mM)	SK	10	1.09	0.95	0.88	1.60	0.27	0.0001
	SH2	10	1.69	1.80	1.22	1.93	0.25
	SH4	10	2.23	2.23	2.08	2.31	0.07

CRP levels in all groups were consistent with normal distribution (Shapiro–Wilk test). Part of TNF-α and TAS levels were not consistent with a normal distribution (Shapiro–Wilk test). TNF-α, tumor necrosis factor; CRP, C-reactive protein; TAS, plasma total antioxidant status; SD, standard deviation.

Table 4. Significant correlations between TAS and SBP, DBP and TNF-α in the entire population of rats.

Correlated parameters	N	The correlation coefficient R	p
TAS (mM) & SBP (mmHg)	30	−0.4005	0.0283
TAS (mM) & DBP (mmHg)	30	−0.6460	0.0001
TAS (mM) & TNF-α (ng ml^–1)	30	−0.5083	0.0041

TAS estimated in relation to the total of all three groups were not consistent with a normal distribution (Shapiro–Wilk test). TAS, plasma total antioxidant status; SBP, systolic blood pressure; DBP, diastolic blood pressure; TNF-α, tumor necrosis factor.