Hemoglobin
Hemoglobin is an iron-containing protein in red blood cells that transports Oxygen from the lungs to tissues and facilitates the carriage of carbon dioxide back to the lungs.
Hemoglobin is an iron-containing protein in red blood cells that transports Oxygen from the lungs to tissues and facilitates the carriage of carbon dioxide back to the lungs. It is composed of globin protein chains containing heme groups, each of which can reversibly bind Oxygen. Hemoglobin also contributes to blood’s acid–base buffering capacity. Its production is stimulated principally by erythropoietin in response to reduced tissue oxygen availability, with iron, folate, vitamin B12, and other nutrients required for effective erythropoiesis.
Hemoglobin concentration is a routinely measured clinical metric, usually reported as part of a complete blood count alongside hematocrit and red-cell indices. A reduced concentration is termed anemia and may reflect blood loss, nutritional deficiency, inflammation, impaired erythropoietin production, hemolysis, or inherited disorders such as sickle-cell disease. Hemoglobin values are interpreted in relation to Age, sex, pregnancy status, altitude, hydration, and clinical context. In research and clinical risk models, hemoglobin may be evaluated with inflammatory, nutritional, renal, and hematologic variables including C-reactive protein (CRP), albumin, white blood cell count, and platelet count. It is distinct from glycated hemoglobin (HbA1c), which reflects the proportion of hemoglobin modified by β-glucose over the preceding several weeks and is used primarily in assessment of glycemic exposure.
Rebuilt from PubMed 18 Sept 2026 · no new papers today
Where the papers sit
11 papers study hemoglobin directly. Those 11 do not group into themes. Hemoglobin appears as a biomarker, nutritional outcome, transfusion-related measure, diagnostic target, and cancer-resistance factor across unrelated clinical questions. The cluster shares hemoglobin measurement rather than a unified biological theme or research direction. They are no more alike than papers drawn from anywhere in the corpus. 1 new direction follows.
Hemoglobin is an intracellular antioxidant that drives sorafenib resistance in hepatocellular carcinoma
The hepatocellular carcinoma study finds that HIF1α-KLF4 signaling induces extra-erythrocytic hemoglobin in cancer cells, where it scavenges reactive oxygen species, preserves redox homeostasis, and promotes sorafenib resistance 42744801Sep. This departs from treating hemoglobin primarily as a circulating measure of anemia, disease status, or treatment response: hemoglobin becomes a tumor-cell mechanism of therapy resistance, and suppressing its expression emerges as a way to restore oxidative stress and enhance tumor suppression.
Recent Findings on hemoglobin
Clinical Hemoglobin Associations: Hemoglobin links cancer biology, transplantation, nutrition, infection prediction, TB triage, and blood-based sensing with clinically important outcomes through different pathways. In hepatocellular carcinoma, HIF1α-KLF4 induces extra-erythrocyte hemoglobin, which scavenges reactive oxygen species and promotes sorafenib resistance; hemoglobin upregulation independently predicts poor outcomes 42744801Sep. Higher pre-transplant hemoglobin attenuated delayed granulocyte engraftment and RBC transfusion requirements after allogeneic HSCT, while preoperative anemia predicted hospital-acquired complications during surgery for spinal metastases 42703897Sep42043869Apr. Strict follow-up of therapeutic iron or preventive multiple micronutrient powder and home-based multiple micronutrient powder improved infant hemoglobin, although residual anemia remained common in high-altitude Peru 42647478Aug42318876Jun. Hemoglobin contributed to an explainable Gradient Boosting model for in-hospital infection in systemic lupus erythematosus, underperformed C-reactive protein for TB triage, and was paired with HbA1c in a dual-target SERS sensor 42557059Aug42506936Jul42478624Jul. NHANES and aging-cohort analyses associated lower hemoglobin with diabetic kidney disease and cognitive impairment, but Mendelian randomization showed SNP-specific heterogeneity and the mediation findings require intervention-based validation 42566589Aug41980534Apr.
Written from 11 PubMed abstracts, each one cited by PMID above. Published: 2026-08-20. Last written: 2026-09-17 by GPT. Drafted by language models from published abstracts; not medical advice.