Table 1 Summary of trials retrieved to investigate the impact of taurine on metabolic syndrome.

From: Taurine reduces the risk for metabolic syndrome: a systematic review and meta-analysis of randomized controlled trials

First author & year

Country

Population

Participants (F/M)

Age

Funding/grants/support

Azuma [22]

Japan

Congestive heart failure

58 (30/28)

38 - 89

N/A

Azuma [21]

Japan

Congestive heart failure

14 (5/9)

68.71 ± 9.10

Osaka University Medical School

Fujita [27]

Japan

Borderline hypertension

19 (N/A)

20 - 25

N/A

Azuma [23]

Japan

Idiopathic dilated cardiomyopathy

17 (6/11)

N/A

N/A

Mizushima [30]

Japan

Healthy male volunteers

20 (0/20)

18 - 29

N/A

Zhang [8]

Japan

Overweight or obese non-diabetic subjects

30 (16/14)

Taurine group 20.1 ± 2.0

Placebo group 20.4 ± 1.1

Taisho Pharmaceutical Co., Ltd., Japan

Spohr [7]

Denmark

Type 2 diabetes mellitus

18 (0/18)

40 ± 8

Steno Diabetes Center, Gentofte, Denmark, Aase and Ejnar Danielsens Foundation, Lyngby, Denmark

Moloney [31]

Ireland

Type 1 diabetes mellitus

19 (0/19)

28.0 ± 2.0

N/A

Beyranvand [25]

Iran

Heart failure with left ventricular ejection fraction less than 50%

29 (3/26)

60.57 ± 6.54

Shahid

Beheshti Medical University

Arrieta [19]

Spain

Patients require amino-acid supplement after major surgical procedure

74 (21/53)

Taurine group: 48 – 90

Placebo group: 50 - 113

N/A

Hsieh [28]

China

Chronic alcoholic patients

30 (17/13)

Taurine group 59 ± 13

Placebo group 60 ± 12

Asia University (100-A-06), Chung Shan MedicalUniversity (CSMU-INT-102-12).

Rosa [34]

Brazil

Obese women

16 (16/0)

32 ± 2

National Council of Scientific and Technological Development (CNPq), State of Sao Paulo Research Foundation (FAPESP).

Averin [20]

Russia

Coronary heart disease/Heart valve defects

48 (12/36)

Taurine group: 49.79 ± 1.4

Placebo group 48.65 ± 1.5

N/A

Ra [33]

Japan

Healthy men

29 (0/29)

Taurine group: 25. 4 ± 1.0Placebo group: 25.2 ± 1.0

Japan Society for the Promotion of Science (JSPS)

Sun [37]

China

Prehypertensive individuals

86 (44/42)

56.75 ± 8.26

National Basic Research Program of China, National Natural Science Foundation of China

Ahmadian [17] a a (Journal of Dietary Supplements)

Iran

Heart failure

16 (N/A)

Taurine group: 60.12 ± 5.4

Placebo group: 60.13 ± 8.3

N/A

Ahmadian [18] b a (Ther Adv Cardiovasc Dis)

Iran

Heart failure

16 (N/A)

Taurine group: 60.12 ± 5.4

Placebo group: 60.13 ± 8.3

N/A

Schwarzer [35]

Austria

Patients with hepatic venous pressure gradient ≥12 mmHg

22 (8/14)

52 ± 11

N/A

Batitucci [24]

Brazil

Obese women

22 (22/0)

36.6 ± 6.4

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior - Brasil (CAPES); The Sao Paulo Research Foundation (FAPESP)

Shari [36]

Iraq

Type 2 diabetes mellitus

80 (34/46)

Taurine group: 48.8 + 3.1

Placebo group: 50.2 ± 3.7

N/A

Van Hove [38]

USA

Inherited cystathionine -β-synthase deficient homocystinuria

36 (19/17)

8 - 50

Food and Drug Administration, Walter S. and Lucienne Driskill Foundation

Maleki [29]

Iran

Type 2 diabetes mellitus

45 (30/15)

Taurine group: 41.61 ± 6.63

Placebo group: 43.86 ± 7.06

Tabriz University of Medical Sciences, Tabriz, Iran

Esmaeili [26]

Canada

Type 2 diabetes mellitus

46 (32/14)b

Taurine group: 42.74 ± 7.21

Placebo group: 43.52 ± 6.94

N/A

Zaki [39]

Egypt

Peripartum cardiomyopathy

40 (40/0)

Taurine group: 31.1 ± 2.64

Placebo group: 30.85 ± 3.07

N/A

Moludi [32]

Iran

Type 2 diabetes mellitus

120 (97/23)

Taurine group: 52.13 ± 8.1

Placebo group: 53.08 ± 8.8

N/A

  1. AA amino acid, RCT randomized controlled trial, N/A not applicable.
  2. aDescribes the same set of subjects, but provides different outcomes.
  3. bBefore loss of follow up.