Evidence map›Paper›PMID 33104989›Full record

Observational studyObesity surgery2021

Improvements in Diabetic Neuropathy and Nephropathy After Bariatric Surgery: a Prospective Cohort Study.

Safwaan Adam, Shazli Azmi, Jan H Ho, Yifen Liu, Maryam Ferdousi, Tarza Siahmansur, Alise Kalteniece, Andrew Marshall, Shaishav S Dhage, Zohaib Iqbal and 9 more

Abstract readObservational Study
In one paragraph

Observational study in Obesity surgery, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 37 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
37citing papers in PubMed, 2 pooled it
–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

37 citing papers in PubMed, 2 syntheses or guidelines pooled it.

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4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

19 authors.

Safwaan AdamFaculty of Biology, Medicine and Health, University of Manchester, Manchester, UK.ORCID http://orcid.org/0000-0001-8004-1897
Shazli AzmiFaculty of Biology, Medicine and Health, University of Manchester, Manchester, UK.
Jan H HoFaculty of Biology, Medicine and Health, University of Manchester, Manchester, UK.
Yifen LiuFaculty of Biology, Medicine and Health, University of Manchester, Manchester, UK.
Maryam FerdousiFaculty of Biology, Medicine and Health, University of Manchester, Manchester, UK.
Tarza SiahmansurFaculty of Biology, Medicine and Health, University of Manchester, Manchester, UK.
Alise KaltenieceFaculty of Biology, Medicine and Health, University of Manchester, Manchester, UK.
Andrew MarshallFaculty of Biology, Medicine and Health, University of Manchester, Manchester, UK.
Shaishav S DhageFaculty of Biology, Medicine and Health, University of Manchester, Manchester, UK.
Zohaib IqbalFaculty of Biology, Medicine and Health, University of Manchester, Manchester, UK.
Yvonne D'SouzaManchester University NHS Foundation Trust, Manchester, UK.
Salim NathaWrightington, Wigan and Leigh NHS Foundation Trust, Wigan, UK.
Philip A KalraFaculty of Biology, Medicine and Health, University of Manchester, Manchester, UK.
Rachelle DonnFaculty of Biology, Medicine and Health, University of Manchester, Manchester, UK.
Basil J AmmoriFaculty of Biology, Medicine and Health, University of Manchester, Manchester, UK.
Akheel A SyedFaculty of Biology, Medicine and Health, University of Manchester, Manchester, UK.
Paul N DurringtonFaculty of Biology, Medicine and Health, University of Manchester, Manchester, UK.
Rayaz A MalikFaculty of Biology, Medicine and Health, University of Manchester, Manchester, UK.
Handrean SoranFaculty of Biology, Medicine and Health, University of Manchester, Manchester, UK. handrean.soran@mft.nhs.uk.

Funding

Wellcome Trust
6 · The paper itself

Abstract

purposeThere are limited data on the impact of bariatric surgery on microvascular complications of type 2 diabetes (T2D), particularly diabetic neuropathy. We assessed microvascular complications (especially neuropathy) in obese patients with T2D before and 12 months after bariatric surgery. MATERIALS AND

methodsThis was a prospective observational cohort study. Measurements of neuropathy symptom profile (NSP), neuropathy disability score (NDS), vibration (VPT), cold (CPT) and warm (WPT) perception thresholds, nerve conduction studies (NCS) and corneal confocal microscopy (CCM) to quantify corneal nerve fibre density (CNFD), branch density (CNBD) and fibre length (CNFL); urinary albumin/creatinine ratio (uACR), estimated glomerular filtration rate (eGFRcyst-creat) and retinal grading were taken.

resultsTwenty-six (62% female; median age 52 years) obese patients with T2D were recruited. Body mass index (BMI) (47.2 to 34.5 kg/m

conclusionBariatric surgery results in improvements in small nerve fibres and glomerular hyperfiltration in obese people with T2D, which were associated with weight loss, triglycerides and systolic blood pressure, but with no change in retinopathy or uACR at 12 months.

Indexed as

Bariatric SurgeryDiabetes Mellitus, Type 2Diabetic NeuropathiesObesity, MorbidFemaleHumansMaleMiddle AgedProspective StudiesBariatric surgeryMicrovascularNephropathyNeuropathyObesityRetinopathySmall nerve fibreType 2 diabetes

Identifiers

PMID33104989
PMCPMC7847862

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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.