Evidence map›Paper›PMID 39877457›Full record

ArticleDiabetology international2025

Impact of angiotensin receptor neprilysin inhibitor on serum C-peptide levels in patients with type 2 diabetes.

Tatsuya Ishibashi, Nobuyuki Nishi, Masanori Kita, Satomi Uenoyama, Tomomi Nakao, Ken Takeshima, Yasushi Furukawa, Shuhei Morita, Hiroto Furuta, Tokio Sanke and 1 more

Abstract read
In one paragraph

Article in Diabetology international, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
2citing papers in PubMed, 1 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

2 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
  2. Article
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

11 authors.

Tatsuya IshibashiFirst Department of Medicine, Wakayama Medical University, 811‑1 Kimi‑idera, Wakayama, 641‑8509 Japan.ORCID 0000-0001-8684-1545
Nobuyuki NishiFirst Department of Medicine, Wakayama Medical University, 811‑1 Kimi‑idera, Wakayama, 641‑8509 Japan.
Masanori KitaFirst Department of Medicine, Wakayama Medical University, 811‑1 Kimi‑idera, Wakayama, 641‑8509 Japan.
Satomi UenoyamaFirst Department of Medicine, Wakayama Medical University, 811‑1 Kimi‑idera, Wakayama, 641‑8509 Japan.
Tomomi NakaoFirst Department of Medicine, Wakayama Medical University, 811‑1 Kimi‑idera, Wakayama, 641‑8509 Japan.
Ken TakeshimaFirst Department of Medicine, Wakayama Medical University, 811‑1 Kimi‑idera, Wakayama, 641‑8509 Japan.
Yasushi FurukawaFirst Department of Medicine, Wakayama Medical University, 811‑1 Kimi‑idera, Wakayama, 641‑8509 Japan.
Shuhei MoritaFirst Department of Medicine, Wakayama Medical University, 811‑1 Kimi‑idera, Wakayama, 641‑8509 Japan.
Hiroto FurutaFirst Department of Medicine, Wakayama Medical University, 811‑1 Kimi‑idera, Wakayama, 641‑8509 Japan.
Tokio SankeInstitute for Diabetes, Fuchu Hospital, Seichokai Social Medical Corporation, Osaka, Japan.
Taka-Aki MatsuokaFirst Department of Medicine, Wakayama Medical University, 811‑1 Kimi‑idera, Wakayama, 641‑8509 Japan.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Sacubitril/valsartan, an angiotensin receptor neprilysin inhibitor (ARNI), is becoming more common in the treatment of heart failure and hypertension. Neprilysin is highly expressed in the renal tubules, and reports have shown increases in urinary C-peptide reactivity (CPR) levels after administration of ARNI. However, the effect of ARNI on serum CPR levels, a critical marker of insulin secretion in diabetes, remains underexplored. We evaluated the effect of ARNI on serum CPR levels in patients with type 2 diabetes and its impact on the assessment of endogenous insulin secretion. We retrospectively investigated the medical records of patients with type 2 diabetes at two hospitals, where fasting plasma glucose and serum CPR levels were measured before and after administration of ARNI. All eleven patients (five males, six females) who met the criteria showed an increase in median fasting serum CPR levels following ARNI administration. The levels rose from a median of 1.78 ng/mL (IQR: 1.26-2.02) to 3.19 ng/mL (IQR: 2.71-5.12), accompanied by significant increases in the C-peptide index. Immunoreactive insulin levels barely changed after ARNI administration, but the ratio of immunoreactive insulin to CPR decreased significantly, from 3.3 (IQR: 2.5-3.9) to 1.6 (IQR: 1.3-1.9). The increase in serum CPR levels is attributed to inhibition of CPR degradation rather than an increase in endogenous insulin secretion, as fasting blood glucose levels remained unchanged. These findings suggest the need for caution when using serum CPR levels to evaluate endogenous insulin secretion in patients treated with an ARNI, which are increasingly being prescribed for heart failure and hypertension.

Indexed as

ARNIInsulin secretionNeprilysin inhibitorSerum CPRType 2 diabetes

Identifiers

PMID39877457
PMCPMC11769879

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.