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. 2021 Dec 13;11:23904. doi: 10.1038/s41598-021-03456-9

Table 1.

Stomatological and clinical characteristics of AD patients and the control group.

C AD P-value
Median (minimum–maximum) Mean ± SD Median (minimum–maximum) Mean ± SD
Sex (Men/Female) 10/15 10/15 NS
Age (years) 83.6 (66–90) 82.1 ± 6.67 82.5 (66–90) 81.19 ± 6.765 NS
Time from diagnosing the disease (years) 9 (5–13) 9.043 ± 2.30569
Stomatological characteristics
SWS total protein (μg/mL) 2314 (1379–3872) 2368 ± 647.2 1338 (203.8–4391) 1597 ± 1065 0.0022
SWS flow (mL/min) 1.465 (0.5–2) 1.364 ± 0.479 0.12 (0.09–0.26) 0.09 ± 0.06325  < 0.0001
DMFT 28.44 (25.44–29.98) 29.45 ± 0.56 28.66 (27.34–29.98) 29.98 ± 0.88 NS
GI 1.58 (1.34–2.3) 1.58 ± 0.07 1.99 (1.59–2.18) 2.05 ± 0.15 NS
Blood count and biochemical characteristics
Leukocytes (103/µl) 7.87 (3.55–9.7) 6.41 ± 2.211 6.3 (3.9–12.6) 6.72 ± 2.114 NS
Erythrocytes (106/µl) 4.21 (3.92–5.61) 4.185 ± 0.563 4.075 (3.33–6.1) 4.233 ± 0.6395 NS
HGB (g/dL) 13.23 (11.9–17.42) 12.89 ± 1.123 12.95 (9.7–14.2) 12.74 ± 1.081 NS
HCT (%) 39.32 (33.24–50.02) 37.96 ± 2.806 38.05 (29.3–42.3) 37.87 ± 2.902 NS
Glucose (mg/dL) 79 (70–94) 115.6 ± 46.64 78 (68–96) 116.9 ± 46.22 NS
CRP (mg/L) 3.2 (0.2–12.45) 23.8 ± 75.17 3.4 (0.1–37.1) 23.4 ± 77.19 NS
AST (U/L) 19 (10–46) 25.89 ± 12.42 21 (12–63) 26.26 ± 11.48 NS
ALT (U/L) 14 (7–55) 17.98 ± 8.67 17 (7–35) 18.42 ± 8.329 NS
Na+ (mmol/L) 143.6 (136.5–140.2) 142.2 ± 3.321 142.3 (135.9–145.1) 141.5 ± 2.922 NS
K+ (mmol/L) 4.58 (3.87–5.8) 9.87 ± 30.25 4.215 (3.71–147) 10.81 ± 30.42 NS
TSH (µIU/mL) 1.4 (1.45–4.69) 1.925 ± 1.102 1.34 (0.69–4.73) 1.857 ± 1.201 NS
Vit. D3 (ng/mL) 20 (12.13–53.23) 18.67 ± 13.46 16.19 (3–43.67) 17.37 ± 12.32 NS
Vit. B12 (pg/mL) 314.7 (123–542) 256.6 ± 132.5 214.3 (50–456.3) 222.7 ± 121.2 NS
Folic acid (ng/mL) 2.34 (1.23–16.55) 3.105 ± 3.021 2.28 (0.88–12.53) 3.324 ± 3.028 NS
Cognitive function
MMSE 28 (26–29) 16 ± 5.43 15 (0–20) 14 ± 4.69 NS
Concomitant diseases
Hypertension n (%) 14 (56) 16 (64) NS
Diabetes n (%) 2 (8) 3 (12) NS
CHD n (%) 5 (20) 6 (24) NS
Atherosclerosis n (%) 3 (12) 3 (12) NS
Osteoporosis n (%) 1 (4) 2 (8) NS
Drugs
Donepezil n (%) 0 12 (48)  < 0.0001
Rivastigmine n (%) 0 10 (40)  < 0.0001
Galantamine n (%) 0 3 (12)  < 0.0001
ACEi n (%) 12 (48) 11 (44) NS
β-blockers n (%) 5 (20) 6 (24) NS
CCB n (%) 8 (32) 7 (28) NS
Loop diuretics n (%) 4 (16) 4 (16) NS
Metformin (%) 2 (8) 3 (12) NS
Alendronate (%) 1 (4) 1 (4) NS

AD—Alzheimer’s disease; C—control group; SWS—stimulated whole saliva; DMFT—decayed, missing, filled teeth index; GI—gingival index; HGB—hemoglobin; HCT—hematocrit; CRP—C-reactive protein; AST—aspartate transaminase; ALT—alanine transferase; Na+—sodium; K+—potassium; TSH—thyroid stimulating hormone; Vit. D3—vitamin D3; Vit. B12—vitamin B12; MMSE—Mini Mental State Examination; CHD—coronary heart disease; ACEi—angiotensin converting enzyme inhibitors; CCB—calcium channel blockers.