Evidence map›Paper›PMID 39055720›Full record

ArticleJournal of the Endocrine Society2024

SHBG, Free Testosterone, and Type 2 Diabetes Risk in Middle-aged African Men: A Longitudinal Study.

Ikanyeng D Seipone, Amy E Mendham, Karl-Heinz Storbeck, Imken Oestlund, Clement N Kufe, Tinashe Chikowore, Maphoko Masemola, Nigel J Crowther, Andre Pascal Kengne, Shane Norris and 4 more

Abstract read
In one paragraph

Article in Journal of the Endocrine Society, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.

0numbers the graph read from it
0cells of the map it votes in
4citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

4 citing papers in PubMed.

  1. Review
  2. Review
  3. Article
  4. Observational
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

14 authors.

Ikanyeng D SeiponeBiomedical Research Innovation Platform, South African Medical Research Council, Cape Town 7505, South Africa.ORCID https://orcid.org/0000-0003-2853-4736
Amy E MendhamRiverland Academy of Clinical Excellence, Riverland Mallee Coorong Local Health Network, South Australia Health, Berri, SA 5343, Australiacountry.
Karl-Heinz StorbeckDepartment of Biochemistry, Stellenbosch University, Stellenbosch 7602, South Africa.ORCID https://orcid.org/0000-0003-1669-6383
Imken OestlundDepartment of Biochemistry, Stellenbosch University, Stellenbosch 7602, South Africa.
Clement N KufeSouth African Medical Research Council/WITS Developmental Pathways for Health Research Unit, Department of Paediatrics, School of Clinical Medicine, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg 2000, South Africa.
Tinashe ChikoworeSouth African Medical Research Council/WITS Developmental Pathways for Health Research Unit, Department of Paediatrics, School of Clinical Medicine, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg 2000, South Africa.
Maphoko MasemolaSouth African Medical Research Council/WITS Developmental Pathways for Health Research Unit, Department of Paediatrics, School of Clinical Medicine, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg 2000, South Africa.
Nigel J CrowtherDepartment of Chemical Pathology, National Health Laboratory Service and University of the Witwatersrand Faculty of Health Sciences, Johannesburg 2000, South Africa.
Andre Pascal KengneNon-Communicable Diseases Research Unit, South African Medical Research Council, Cape Town 7505, South Africa.
Shane NorrisSouth African Medical Research Council/WITS Developmental Pathways for Health Research Unit, Department of Paediatrics, School of Clinical Medicine, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg 2000, South Africa.
Tommy OlssonDepartment of Public Health and Clinical Medicine, Umeå University, Umeå 90187, Sweden.ORCID https://orcid.org/0000-0001-7768-1076
Todd BrownDivision of Endocrinology and Metabolism, Johns Hopkins University School of Medicine, Baltimore, MD 21218, USA.ORCID https://orcid.org/0000-0001-8599-278X
Lisa K MicklesfieldSouth African Medical Research Council/WITS Developmental Pathways for Health Research Unit, Department of Paediatrics, School of Clinical Medicine, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg 2000, South Africa.
Julia H GoedeckeBiomedical Research Innovation Platform, South African Medical Research Council, Cape Town 7505, South Africa.ORCID https://orcid.org/0000-0001-6795-4771

Funding

Medical Research Council MC_PC_16099
6 · The paper itself

Abstract

Objectives: To investigate longitudinal changes in SHBG and free testosterone (free T) levels among Black middle-aged African men, with and without coexistent HIV, and explore associations with incident dysglycaemia and measures of glucose metabolism. Design: This longitudinal study enrolled 407 Black South African middle-aged men, comprising primarily 322 men living without HIV (MLWOH) and 85 men living with HIV (MLWH), with normal fasting glucose at enrollment. Follow-up assessments were conducted after 3.1 ± 1.5 years. Methods: At baseline and follow-up, SHBG, albumin, and total testosterone were measured and free T was calculated. An oral glucose tolerance test at follow-up determined dysglycaemia (impaired fasting glucose, impaired glucose tolerance, type 2 diabetes) and glucose metabolism parameters including insulin sensitivity (Matsuda index), insulin resistance (homeostasis model assessment of insulin resistance), and beta(β)-cell function (disposition index). The primary analysis focussed on MLWOH, with a subanalysis on MLWH to explore whether associations in MLWOH differed from MLWH. Results: The prevalence of dysglycaemia at follow-up was 17% (n = 55) in MLWOH. Higher baseline SHBG was associated with a lower risk of incident dysglycaemia (odds ratio 0.966; 95% confidence interval 0.945-0.987) and positively associated with insulin sensitivity (β = 0.124, Conclusion: SHBG levels predict the development of dysglycaemia in middle-aged African men but do not exhibit the same predictive value in MLWH.

Indexed as

Africadysglycaemiafree testosteronesex hormone-binding globulintype 2 diabetes

Identifiers

PMID39055720
PMCPMC11272087

What OpenQuestion holds

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Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.