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Table 3 Summary of participant characteristics

From: A systematic review of mitochondrial abnormalities in myalgic encephalomyelitis/chronic fatigue syndrome/systemic exertion intolerance disease

Reference

Dx

Sample (n)

Age (years, average (SD)

Sex, female (%)

Illness duration

Marker assessed

Sample source

ME/CFS/SEID

HC

ME/CFS/SEID

HC

ME/CFS/SEID

HC

Armstrong et al. [5]

Canadian Criteria

34

25

34.9 (1.8 SE)

33.0 (1.6 SE)

100%

100%

NR

Metabolites

Whole blood and urine

Billing-Ross et al. [6]

Fukuda Criteria,

Canadian Criteria

193

196

NR

NR

NR

NR

NR

mtDNA

DNA

Booth et al. [7]

Fukuda Criteria

138

53

Cohort 1: 45.1 (11.8)

Cohort 2: 41.1 (12.1)

35.9 (13.4)

Cohort 1: 79%

Cohort 2: 70%

76%

NR

ATP

Neutrophils

Castro-Marrero et al. [8]

Fukuda Criteria

23

15

44.1 (3.8)

43.5 (5.4)

65.2%

66.7%

15.6 (10.8)

CoQ10, ATP, lipid peroxidation, Mitochondrial citrate

synthase activity, mTDNA, Expression levels of peroxisome proliferator-activated

receptor gamma-coactivator 1-alpha and transcription factor A

PBMCs

Germain et al. [9]

Fukuda Criteria,

IOM 2015

17

15

53.9 (6.2)

51.9 (6.2)

100%

100%

NR

Metabolites

Whole blood

Light et al. [10]

Fukuda criteria

39

22

40–79

40–79

NR

NR

NR

mRNA

Leukocytes

Maes et al. [11]

Fukuda Criteria

58

22

38.5 (13.9)

45.4 (10.1)

86.2%

77.3%

NR

Coenzyme Q10

Plasma

Mandarano et al. [12]

Canadian Criteria

53

45

50.8 (16.2)

50.2 (17.5)

58.5%

57.8%

21.7

Mitochondria

T cells

Missailidis et al. [22]

Canadian Criteria

51

22

26–70

21–58

86%

68%

NR

Mitochondria

Lymphoblasts

Missailidis et al. [23]

Canadian Criteria

51

22

26–70

21–58

86%

68%

NR

Mitochondria

PBMCs

Lymphoblasts

Naviaux et al. [13]

Canadian Criteria,

Fukuda Criteria,

IOM 2015

45

39

F: 52 (2.5)

M: 53 (2.8)

F: 48 (2.8)

M: 53 (3.5)

51.1%

53.8%

F: 17 (2.3)

M: 21 (3.0)

Metabolites

Plasma

Nguyen et al. [14]

Fukuda Criteria

17

19

48.68 (1.06)

46.48 (1.22)

82.4%

68.4%

8.4

TRPM3 surface expression

NK cells, B lymphocytes

Nguyen et al. [15]

Fukuda Criteria,

International Consensus

Criteria

6

6

50.33 (4.95)

50.00 (5.04)

83.3%

83.3%

NR

Mitochondria

NK cells

Plioplys and Plioplys [16]

Fukuda Criteria

15

15

18–58

19–58

53.3%

53.3%

8 months–20 years

Mitochondria

Percutaneous needle muscle biopsies

Shungu et al. [17]

Fukuda Criteria

15

13

32.7 (8.6)

27.6 (7.4)

80%

53.8%

9.7 (9.1)

Metabolites

Cerebrospinal fluid

Sweetman et al. [18]

Canadian Criteria

10

10

36.4

38.8

60%

60%

12.6

RNA

PBMCs

Tomas et al. [19]

Fukuda Criteria

52

35

42.8 (13.7)

36.6 (12.0)

84.6%

77.1%

NR

Mitochondria

PBMCs

Venter et al. [20]

Fukuda Criteria

UK: 89 moderate, 29 severe

RSA: 143 moderate

UK: 64

RSA:98

NR

NR

NR

NR

NR

mtDNA

mtDNA

Yamano et al. [21]

Fukuda Criteria

Training: 47

Validation: 20

Training: 46

Validation: 20

Training: 38.08 (6.57)

Validation: 36.15 (8.14)

Training: 38.78 (9.71)

Validation: 36.10 (8.35)

Training: 87.2%

Validation: 100%

Training: 89.1%

Validation: 100%

NR

Metabolites

Plasma

  1. ATP adenosine triphosphate, CoQ10 Coenzyme Q10, DNA deoxyribonucleic acid, Dx diagnostic criteria, F female, HC healthy control, IOM Institute of Medicine, M male, mtDNA mitochondrial deoxyribonucleic acid, ME/CFS/SEID myalgic encephalomyelitis/chronic fatigue syndrome/systemic exertion intolerance disease, NK natural killer, NR not recorded, N number, PBMCs peripheral blood mononuclear cells, RSA Republic of South Africa, RNA ribonucleic acid, SD standard deviation, TRPM3 transient receptor potential melastatin 3, UK United Kingdom