Cardiac troponin I (TNNI3)
TNNI3 encodes Cardiac Troponin I (CTNI), a cardiac-specific contractile protein and one of the most widely used biomarkers of myocardial injury in clinical medicine.
TNNI3 encodes Cardiac Troponin I (CTNI), a cardiac-specific contractile protein and one of the most widely used biomarkers of myocardial injury in clinical medicine. In the context of biomedical research and diagnostics, TNNI3 is primarily studied as a clinical metric rather than as a therapeutic target: its circulating protein product is measured to assess cardiac muscle damage, especially in acute myocardial infarction and other forms of myocardial injury.
Biologically, Cardiac Troponin I is part of the troponin regulatory complex in the cardiac sarcomere, where it helps control actin–myosin interaction and calcium-dependent contraction. Because CTNI is highly enriched in cardiac tissue, its release into blood reflects disruption of cardiomyocyte integrity. Recent studies also examine how CTNI behaves relative to cardiac troponin T (cTnT), including the CTNI/cTnT ratio, and how myocardial injury pathways such as calpain activity may alter troponin organization. In applied diagnostics, TNNI3 is a major target for ultrasensitive immunoassays, lateral flow formats, and point-of-care platforms.
Where the papers sit
9 papers from the last 6 months study Cardiac troponin I (TNNI3) directly · updated from PubMed 1 Oct 2026
Study type 0 clinical trials · 1 observational · 8 human data
Themes one subject
Those 9 are all about one subject.
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Point-of-Care Troponin Testing
Cardiac troponin I measurement is moving toward ultrasensitive, portable, and low-background testing. Lateral-flow formats use peroxidase-heme, cerium oxide, nanodiamond, and gold-nanoparticle amplification, while electrochemical and photoelectrochemical aptasensors broaden signal-generation options. Smartphone readout with integrated classification and regression supports quantitative testing outside centralized laboratories. Clinical work also links elevated troponin I with prognosis in hospitalized community-acquired pneumonia, but broader validation remains necessary.
Papers
The 9 papers from the last 6 months that study Cardiac troponin I (TNNI3) directly, newest first, by theme and by study type. Study types come from PubMed publication types and MeSH headings.
By theme
Point-of-Care Troponin Testing (9)
- A Prolonged Multimodal Lateral Flow Immunoassay Enabled by Synergistic Peroxidase-Heme Nanohybrids. Analytical chemistry · 11 Aug 2026 PMID 42578840
- Electrospun Cellulose Acetate Membranes Enable Low-Background Fluorescent Nanodiamond Lateral Flow Immunoassays for Highly Sensitive cTnI Detection. ACS applied materials & interfaces · 5 Aug 2026 PMID 42556312
- Zwitterionic peptide-grafted S-CNQDs/Cu2O photocathode for reliable photoelectrochemical detection of cardiac troponin I. Analytica chimica acta · 27 Jul 2026 PMID 42508893
- Exploiting amino acid-modulated active sites of Cu-MOF nanozyme for signal-amplified electrochemical aptasensing of cardiac troponin I. Mikrochimica acta · 15 Jul 2026 PMID 42455351
- Prognostic value of cardiac troponin I in hospitalized patients with community-acquired pneumonia: A retrospective cohort study. Medicine · 23 May 2026 PMID 42175516
- Low-Background Cardiac Troponin I Detection via In Situ Self-Color-Changing Lateral Flow Immunoassay Enabled by H2O2-Triggered Cerium Oxide Nanoprobes. Analytical chemistry · 12 May 2026 PMID 42118913
- Self-amplifying cascade-triggered Au NP assembly strategy for ultrasensitive cTnI detection with dynamic light scattering. Analytical methods : advancing methods and applications · 7 May 2026 PMID 42093395
- Smartphone-Based Microbubble-Linked Immunosorbent Assay Powered by Classification-Regression Integrated Deep Learning for Portable Quantitative Biomarker Analysis. ACS nano · 5 May 2026 PMID 42083727
- Hierarchical Mesochannel-Confined Nanozyme Reactors Propelling Gold Amplification Immunoassays for Ultrasensitive Point-of-Care Diagnostics. Analytical chemistry · 1 May 2026 PMID 42063290
By study type
Observational studies and case reports (1)
- Prognostic value of cardiac troponin I in hospitalized patients with community-acquired pneumonia: A retrospective cohort study. Medicine · 23 May 2026 PMID 42175516
Human data, design not indexed (8)
- A Prolonged Multimodal Lateral Flow Immunoassay Enabled by Synergistic Peroxidase-Heme Nanohybrids. Analytical chemistry · 11 Aug 2026 PMID 42578840
- Electrospun Cellulose Acetate Membranes Enable Low-Background Fluorescent Nanodiamond Lateral Flow Immunoassays for Highly Sensitive cTnI Detection. ACS applied materials & interfaces · 5 Aug 2026 PMID 42556312
- Zwitterionic peptide-grafted S-CNQDs/Cu2O photocathode for reliable photoelectrochemical detection of cardiac troponin I. Analytica chimica acta · 27 Jul 2026 PMID 42508893
- Exploiting amino acid-modulated active sites of Cu-MOF nanozyme for signal-amplified electrochemical aptasensing of cardiac troponin I. Mikrochimica acta · 15 Jul 2026 PMID 42455351
- Low-Background Cardiac Troponin I Detection via In Situ Self-Color-Changing Lateral Flow Immunoassay Enabled by H2O2-Triggered Cerium Oxide Nanoprobes. Analytical chemistry · 12 May 2026 PMID 42118913
- Self-amplifying cascade-triggered Au NP assembly strategy for ultrasensitive cTnI detection with dynamic light scattering. Analytical methods : advancing methods and applications · 7 May 2026 PMID 42093395
- Smartphone-Based Microbubble-Linked Immunosorbent Assay Powered by Classification-Regression Integrated Deep Learning for Portable Quantitative Biomarker Analysis. ACS nano · 5 May 2026 PMID 42083727
- Hierarchical Mesochannel-Confined Nanozyme Reactors Propelling Gold Amplification Immunoassays for Ultrasensitive Point-of-Care Diagnostics. Analytical chemistry · 1 May 2026 PMID 42063290
Written from 9 PubMed abstracts, each one listed by PMID above. Published: 2026-07-08. Last written: 2026-07-29 by GPT. Drafted by language models from published abstracts; not medical advice.