Evidence map›Paper›PMID 25277395›Full record

ArticleDiabetes2015

Lowering plasma 1-deoxysphingolipids improves neuropathy in diabetic rats.

Alaa Othman, Roberto Bianchi, Irina Alecu, Yu Wei, Carla Porretta-Serapiglia, Raffaella Lombardi, Alessia Chiorazzi, Cristina Meregalli, Norberto Oggioni, Guido Cavaletti and 3 more

Open access · bronzeAbstract read
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In one paragraph

Article in Diabetes, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 57 papers.

0numbers the graph read from it
0cells of the map it votes in
57citing papers in PubMed
2.6field-weighted citation impact, top 10% of its field
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

57 citing papers in PubMed, 85 citations in OpenAlex.

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  9. Long Chain Base Profiling with Multiple Reaction Monitoring Mass Spectrometry.Methods in molecular biology (Clifton, N.J.) · 2025
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4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

13 authors at 5 institutions in 2 countries.

Alaa OthmanInstitute for Clinical Chemistry, University Hospital Zurich, Zurich, Switzerland Centre for Integrative Human Physiology, University of Zurich, Zurich, Switzerland Competence Centre for Systems Physiology and Metabolic Diseases, Zurich, Switzerland.
Roberto BianchiNeuroalgology and Headache Unit, IRCCS Foundation, Carlo Besta Neurological Institute, Milan, Italy.
Irina AlecuInstitute for Clinical Chemistry, University Hospital Zurich, Zurich, Switzerland Centre for Integrative Human Physiology, University of Zurich, Zurich, Switzerland.
Yu WeiInstitute for Clinical Chemistry, University Hospital Zurich, Zurich, Switzerland.
Carla Porretta-SerapigliaNeuroalgology and Headache Unit, IRCCS Foundation, Carlo Besta Neurological Institute, Milan, Italy.
Raffaella LombardiNeuroalgology and Headache Unit, IRCCS Foundation, Carlo Besta Neurological Institute, Milan, Italy.
Alessia ChiorazziExperimental Neurology Unit and Milan Center for Neuroscience, Department of Surgery and Translational Medicine, University of Milan-Bicocca, Milan, Italy.
Cristina MeregalliExperimental Neurology Unit and Milan Center for Neuroscience, Department of Surgery and Translational Medicine, University of Milan-Bicocca, Milan, Italy.
Norberto OggioniExperimental Neurology Unit and Milan Center for Neuroscience, Department of Surgery and Translational Medicine, University of Milan-Bicocca, Milan, Italy.
Guido CavalettiExperimental Neurology Unit and Milan Center for Neuroscience, Department of Surgery and Translational Medicine, University of Milan-Bicocca, Milan, Italy.
Giuseppe LauriaNeuroalgology and Headache Unit, IRCCS Foundation, Carlo Besta Neurological Institute, Milan, Italy.
Arnold von EckardsteinInstitute for Clinical Chemistry, University Hospital Zurich, Zurich, Switzerland Centre for Integrative Human Physiology, University of Zurich, Zurich, Switzerland Competence Centre for Systems Physiology and Metabolic Diseases, Zurich, Switzerland.
Thorsten HornemannInstitute for Clinical Chemistry, University Hospital Zurich, Zurich, Switzerland Centre for Integrative Human Physiology, University of Zurich, Zurich, Switzerland Competence Centre for Systems Physiology and Metabolic Diseases, Zurich, Switzerland thorsten.hornemann@usz.ch.
Fondazione IRCCS Istituto Neurologico Carlo Besta · ITUniversity of Milano-Bicocca · ITSwiss Integrative Center for Human Health · CHUniversity of Zurich · CHUniversity Hospital of Zurich · CH

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

1-Deoxysphingolipids (1-deoxySLs) are atypical neurotoxic sphingolipids that are formed by the serine-palmitoyltransferase (SPT). Pathologically elevated 1-deoxySL concentrations cause hereditary sensory and autonomic neuropathy type 1 (HSAN1), an axonal neuropathy associated with several missense mutations in SPT. Oral L-serine supplementation suppressed the formation of 1-deoxySLs in patients with HSAN1 and preserved nerve function in an HSAN1 mouse model. Because 1-deoxySLs also are elevated in patients with type 2 diabetes mellitus, L-serine supplementation could also be a therapeutic option for diabetic neuropathy (DN). This was tested in diabetic STZ rats in a preventive and therapeutic treatment scheme. Diabetic rats showed significantly increased plasma 1-deoxySL concentrations, and L-serine supplementation lowered 1-deoxySL concentrations in both treatment schemes (P < 0.0001). L-serine had no significant effect on hyperglycemia, body weight, or food intake. Mechanical sensitivity was significantly improved in the preventive (P < 0.01) and therapeutic schemes (P < 0.001). Nerve conduction velocity (NCV) significantly improved in only the preventive group (P < 0.05). Overall NCV showed a highly significant (P = 5.2E-12) inverse correlation with plasma 1-deoxySL concentrations. In summary, our data support the hypothesis that 1-deoxySLs are involved in the pathology of DN and that an oral L-serine supplementation could be a novel therapeutic option for treating DN.

Indexed as

AnimalsBody WeightDiabetic NeuropathiesEatingElectrophysiologyHereditary Sensory and Autonomic NeuropathiesMaleRatsRats, Sprague-DawleySerineSphingosine1-deoxysphingosineSerineSphingosine

Identifiers

PMID25277395
OpenAlexW2167939048

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

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.