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Table 4 Characteristics of subsample for examination of glial cells in A\(\upbeta\) plaque microenvironment, and comparison of glial cell areas between HIV-negative, HIV-undetectable, and HIV-detectable age-matched groups

From: Frontal lobe microglia, neurodegenerative protein accumulation, and cognitive function in people with HIV

 

Total sample

HIV-neg

HIV-U

HIV-D

p

n

31

12

11

8

 

Mean age (SEM)

61.7 (1.28)

61.7 (2.10)

62.8 (2.19)

60.1 (2.57)

0.7302

Male gender, n (%)a

15 (48%)

7 (58%)

2 (18%)

6 (75%)

0.0340

APOE \(\upvarepsilon\)4, n (%)b

16 (52%)

3 (25%)

6 (55%)

7 (88%)

0.0227

APOE \(\upvarepsilon\)2, n (%)

3 (9.7%)

2 (17%)

0

1 (13%)

0.3825

Mean area diffuse plaque, um2 (SEM)

2495 (310)

2213 (503)

2350 (526)

3115 (617)

0.5054

Mean area cored plaque, um2 (SEM)*

1560 (94)

1548 (159)

1649 (159)

1445 (194)

0.6383

cored plaques

GFAP plaque

0.7174 [0.1098,1.2907]

0.1126 [0.0305,1.2316]

1.0813 [0.6481,1.2491]

0.2959 [0.0000,1.4296]

0.3433

GFAP rim

0.4148 [0.0736,0.9678]

0.0885 [0.0239,0.9515]

0.6775 [0.4148,0.9360]

0.2008 [0.0268,1.0748]

0.2997

CD68 plaque

0.7098 [0.1445,1.0210]

0.8035 [0.0993,1.0601]

0.8004 [0.3006,1.0100]

0.4198 [0.1282,1.2166]

0.8655

CD68 rim

0.1570 [0.6844,0.1780]

0.1632 [0.0649,0.1964]

0.1313 [0.0797,0.1766]

0.1146 [0.0494,0.2480]

0.8947

Iba1 plaque

0.9427 (0.0810)

0.9651 (0.1383)

0.9425 (0.1383)

0.9093 (0.1694)

0.9681

Iba1 rim

0.5612 (0.0504)

0.6003 (0.0845)

0.5761 (0.0845)

0.4800 (0.1034)

0.6554

diffuse plaques

GFAP plaque

0.4327 [0.0592,0.8564]

0.1513 [0.0394,0.9381]

0.6198 [0.0969,0.7264]

0.3205 [0.1084,0.8807]

0.4226

GFAP rim

0.3135 [0.0558,0.6165]

0.1392 [0.0509,0.6278]

0.4609 [0.0781,0.6165]

0.3612 [0.0763,0.7271]

0.5281

CD68 plaque

0.1682 [0.0931,0.3177]

0.1478 [0.1027,0.2158]

0.1970 [0.0641,0.3547]

0.2592 [0.0664,0.3815]

0.6105

CD68 rim

0.1492 [0.1099,0.1673]

0.1444 [0.1097,0.1937]

0.1489 [0.1086,0.1673]

0.1576 [0.1257,0.2428]

0.5010

Iba1 plaque

0.7593 (0.0602)

0.7855 (0.0994)

0.7077 (0.1038)

0.7906 (0.1217)

0.8269

Iba1 rim

0.5970 (0.0452)

0.6353 (0.0745)

0.5556 (0.0779)

0.5965 (0.0913)

0.7626

  1. Plaque areas and percentage glial cell areas log transformed prior to analysis; for GFAP and CD68 medians and IQR, for Iba1, means and SEM. *: cored plaques not sufficient in numbers for analysis in 2 HIV-D, 2 HIV-U, and 3 HIV-neg a: HIV-U < HIVD, HIV-neg; b: HIV-D > HIV-U > HIV-neg