Kremezin (AST-120)
/ Mitsubishi Tanabe, Kureha Corp
- LARVOL DELTA
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November 17, 2025
Clinical Pharmacokinetic-Pharmacodynamic Relationships of Pharmacological Strategies for Attenuating p-Cresyl Sulfate in Patients with Kidney Disease.
(PubMed, Clin Pharmacokinet)
- "The studies included AST-120 (n = 3), sevelamer (n = 9), sucroferric Noxyhydroxide (n = 1 [+ 1 overlapping with sevelamer]), prebiotics (n = 15), probiotics (n = 9), synbiotics (n = 13), antibiotics (n = 3), ketoanalogs (n=3), and curcumin (n = 3)...In contrast, the majority of sucroferric oxyhydroxide, prebiotics, probiotics, ketoanalogs, and curcumin studies did not demonstrate consistent pCS reductions...In Ngeneral, it was also difficult to establish associations with outcomes in most studies because of limitations in experimental design, and in instances where potential pharmacokinetic-pharmacodynamic relationships were observed, they were generally weak and only with surrogate markers of commonly measured biochemistry, oxidative stress, lipid profiles, and inflammatory markers, with only a handful of studies capturing clinical outcomes. In conclusion, we have identified potential pharmacological interventions that may be further developed for the purpose of..."
Journal • PK/PD data • Review • Cardiovascular • Chronic Kidney Disease • Congestive Heart Failure • Heart Failure • Myocardial Infarction • Nephrology • Renal Disease • Transplantation
October 18, 2025
Long-Term Renoprotective Effects of AST-120 (Kremezin) in Patients with CKD
(KIDNEY WEEK 2025)
- "Conclusion AST-120 demonstrated significant long-term renoprotective effects at 8 years in CKD stage 3-5 patients and at 10 years in CKD stage 4 patients. 8-Year Survival Free from ESRD or Mortality Risk of ESRD or Mortality at 8 and 10 Years"
Clinical • Chronic Kidney Disease • Nephrology • Renal Disease
October 18, 2025
Kidney Injury Following Pregnancy Related (PR)-AKI
(KIDNEY WEEK 2025)
- "A subset of rats were treated with an oral carbon absorbent, AST-120, which absorbs the precursor of indoxyl sulfate in the gut...In order to identify a safe therapeutic that can be administered during pregnancy, more experiments are needed to determine the exact role of indoxyl sulfate in the renal injury progression. We are currently examining the role of I.S. during pregnancy and the postpartum period."
Acute Kidney Injury • Cardiovascular • Chronic Kidney Disease • Fibrosis • Immunology • Inflammation • Nephrology • Obstetrics • Renal Disease • Reperfusion Injury
November 06, 2025
Unraveling the mysteries of the gut-kidney axis: the protective role of traditional Chinese medicine in chronic kidney disease.
(PubMed, Front Microbiol)
- "Contemporary therapeutic arsenals targeting this axis encompass probiotic reconstitution, prebiotic orchestration, synbiotic hybridization, precision nutritional calibration, and enteral sequestrants including AST-120...Sophisticated polyherbal architectures, exemplified by YQHG and YSHS, harmoniously fortify intestinal impermeability while nullifying uremic translocation. These revelations substantiate the transformative potential of integrative paradigms amalgamating TCM-based phytomedicine with microbiota-directed precision therapeutics for CKD stewardship."
Journal • Review • Chronic Kidney Disease • Gastrointestinal Disorder • Nephrology • Renal Disease
August 30, 2025
Stabilizing Mirizzi Syndrome With ERCP: Endoscopic Management as a Bridge to Delayed Cholecystectomy
(ACG 2025)
- "ALP 349 U/L, AST 120 U/L, ALT 228 U/L, total bilirubin 5.5 mg/dL, WBC 12.4 ×10⁹/L...Surgical management is challenging due to inflammation around the gallbladder neck, increasing the risk of bile duct injury during laparoscopic procedures. As seen in this case, endoscopic management with ERCP can provide symptomatic relief and diagnostic clarification in patients not suitable for immediate surgery.Figure: 7.28 mm Dilated CBD Found on MRCPFigure: Stenosis of the Common Hepatic Duct and Failure of Gallbladder Filling Seen on ERCP"
Addiction (Opioid and Alcohol) • Dermatology • Fibrosis • Gallbladder Cancer • Gastroenterology • Genetic Disorders • Hepatology • Immunology • Liver Failure • Pruritus • Solid Tumor
July 01, 2025
SPONTANEOUS PNEUMOTHORAX IN PARAQUAT POISONING: THE RARE BUT LETHAL DAISLEY-BARTON SYNDROME
(CHEST 2025)
- "Arterial blood gas (ABG) analysis demonstrated metabolic acidosis (pH-7.35, PaO₂-60 mmHg, HCO₃ mmol/L), and laboratory investigations indicated mild liver injury (AST-120 IU/L, ALT-98 IU/L) and acute kidney injury (creatinine-2.1 mg/dL, BUN-35 mg/dL)...High-resolution computed tomography (HRCT) of the chest showed diffuse bilateral ground-glass opacities (GGOs), consistent with acute lung injury.He was started on oxygen therapy, intravenous dexamethasone (6mg thrice daily), N-acetylcysteine (NAC), ceftriaxone (1g twice daily), and Vitamin C.On day three of hospitalization, the patient developed acute desaturation (SpO₂: 62%) despite supplemental oxygen and worsening tachypnea (RR: 40)... This case highlights the rare occurrence of spontaneous pneumothorax in paraquat poisoning, emphasizing the importance of early intervention, vigilant supportive care, and monitoring for late-onset complications to improve outcomes in fatal paraquat poisoning"
Acute Kidney Injury • Acute Lung Injury • Hepatology • Inflammation • Liver Failure • Metabolic Disorders • Nephrology • Renal Disease • Respiratory Diseases
October 08, 2025
HSD17B13 EXPRESSION IS INCREASED IN BALLOONED HEPATOCYTES FROM PATIENTS WITH STEATOTIC LIVER DISEASE (SLD) AND CAN BE THERAPEUTICALLY TARGETED BY GSK4532990 IN PATIENTS WITH ALCOHOL-ASSOCIATED LIVER DISEASE (ALD)
(AASLD 2025)
- P2 | "C-P A participants had ALT 55 (35–117) vs 39 (13–53) IU/L and AST 120 (180–73) vs 80 (144–53) IU/L, despite consistent alcohol consumption during follow-up (PEth 758 [427-1273] vs 796 [417–1169] µg/L) at baseline vs W8, (median [IQR]; Fig. HSD17B13 expression is increased in ballooned hepatocytes. Preliminary data from the ongoing STARLIGHT ALD study have not identified safety concerns from a single dose of GSK4532990. There was a trend toward reduced aminotransferases, despite ongoing alcohol consumption, that may correspond to improvements in hepatocyte ballooning."
Clinical • Addiction (Opioid and Alcohol) • Fibrosis • Hepatology • Immunology
September 20, 2025
ASTRA-AKD: AST-120 (Kremezin®) for the Renal Protection and Attenuation of Decline in Acute Kidney Disease
(clinicaltrials.gov)
- P4 | N=100 | Recruiting | Sponsor: Chang Gung Memorial Hospital
New P4 trial • Acute Kidney Injury • Nephrology • Renal Disease
July 31, 2025
Gut-derived uremic toxins and cardiovascular health in chronic kidney disease.
(PubMed, Tzu Chi Med J)
- "Recent trials have demonstrated the potential of agents such as sevelamer, high-amylose-resistant starch, and AST-120 to reduce UT levels and improve certain vascular markers. However, more robust, long-term studies are necessary to fully establish the therapeutic efficacy and optimize treatment strategies to mitigate the impact of gut-derived UTs on CKD and CV health."
Journal • Review • Cardiovascular • Chronic Kidney Disease • Gastrointestinal Disorder • Inflammation • Nephrology • Renal Disease
July 17, 2025
Adynamic bone disorder in chronic kidney disease: meta-analysis and narrative review of potential biomarkers as diagnosis and therapeutic targets.
(PubMed, Ren Fail)
- "Romosozumab, while effective, has safety concerns that limit its use. Uremic toxins are reduced by AST-120 treatment, which alleviates PTH hypo-responsiveness and bone toxicity. Adjunctive measures include addressing vitamin D deficiency, and diabetes, and utilizing antioxidant and anti-inflammatory therapies. Overall, BALP and iPTH appear as potential promising biomarkers for diagnosing and monitoring adynamic bone disorder in CKD, effectively guiding therapeutic interventions."
Biomarker • Clinical • Journal • Retrospective data • Review • Chronic Kidney Disease • Diabetes • Hypoparathyroidism • Inflammation • Metabolic Disorders • Nephrology • Orthopedics • Renal Disease
June 19, 2025
Effect of AST-120 and synbiotics on the gut microbiome in chronic kidney disease patients, a randomized-controlled trial: Non-dialysis CKD, Diabetic Kidney Disease
(KSN 2025)
- "These findings suggest that AST-120 and synbiotics may have a synergistic effect in modulating the gut microbiome, potentially leading to improved renal and systemic health outcomes in CKD patients. Result_histogram.png"
Clinical • Chronic Kidney Disease • Diabetic Nephropathy • Nephrology • Renal Disease • Sarcopenia
February 24, 2025
Death Crystals: Sign of Impending Doom
(ATS 2025)
- "Patient was initially admitted for nausea after her first cycle of carboplatin/etoposide/durvalumab...Liver function at arrival was AST 120 and ALT 16 with an INR of 4.6...Here, isolated elevation of INR preceded the discovery of the crystals and prompt treatment may have helped prevent imminent hemodynamic instability. Increased reporting of this phenomena will provide further data so the significance of these inclusion crystals can further be identified."
Chronic Obstructive Pulmonary Disease • Gastroenterology • Hepatology • Immunology • Liver Failure • Lung Cancer • Oncology • Respiratory Diseases • Small Cell Lung Cancer • Solid Tumor
May 22, 2025
Indoxyl Sulfate Contributes to Selenium Deficiency and Renal Ferroptosis by Decreasing the Expression of Selenium Transport Protein SEPP1.
(PubMed, Kidney360)
- "This study highlights the key role IS plays in selenium deficiency and renal ferroptosis by suppressing hepatic SEPP1 expression. The findings suggest potential therapeutic strategies that target IS and selenium deficiency for the management of CKD."
Journal • Chronic Kidney Disease • Nephrology • Renal Disease • AMPK • GPX4 • MIR34A
February 26, 2025
Uremic Toxins, Chronic Kidney Disease, and Cognitive Dysfunction.
(PubMed, J Am Soc Nephrol)
- "Reviewed therapeutic interventions include: AST-120 [indoxyl sulfate absorbent], CH-223191 [aryl hydrocarbon receptor antagonist], TRAM34 [Kca3.1-specific inhibitor], anakinra [IL-1R inhibitor], marimastat, exercise, supplements, and kidney transplantation. Finally, future research directions are suggested including targeting of cellular senescence abundance with senotherapeutics and capitalizing on anti-inflammatory effects of regenerative, cell-based therapeutics (e.g. mesenchymal stem cells and extracellular vesicles), and use of aged murine models. Collectively, CKD-associated cognitive impairment represents a prevalent condition for which remaining knowledge gaps exist, and scientific advancements are needed to preserve cognitive function and improve the lives of in individuals with CKD."
Journal • Alzheimer's Disease • Chronic Kidney Disease • CNS Disorders • Cognitive Disorders • Inflammation • Nephrology • Renal Disease • Transplantation • Vascular Neurology • IL1R1
February 22, 2025
Impact of using oral spherical carbon adsorbent in predialysis chronic kidney disease period on cardiovascular outcome after dialysis therapy.
(PubMed, Sci Rep)
- "The oral spherical carbon adsorbent (OSCA), AST-120, has demonstrated efficacy in slowing the progression of chronic kidney disease (CKD)...Additionally, the OSCA ≥ 4 months group experienced significantly fewer composite outcome (HR 0.46, 95% CI 0.24-0.90). These findings indicate that longer-term OSCA use before dialysis initiation could reduce cardiovascular events and death post-dialysis, suggesting a potential 'legacy effect'."
Journal • Retrospective data • Cardiovascular • Chronic Kidney Disease • Nephrology • Renal Disease
February 09, 2025
Mitochondrial dysfunction and mitophagy blockade contribute to renal osteodystrophy in chronic kidney disease-mineral bone disorder.
(PubMed, Kidney Int)
- "The altered p62 /SQSTM1 and LC3-II expression was consistent with impaired mitophagy machinery, and the effects of uremic toxins were reversible by rapamycin. A causal link between uremic toxins and the development of mitochondrial abnormalities and ROD was established by showing that a mitochondria-targeted antioxidant (MitoQ) and the charcoal adsorbent AST-120 were able to mitigate the uremic toxin-induced mitochondrial changes and improve bone health...Targeting uremic toxins, oxygen-free radical production and the mitophagy process may offer novel routes for intervention to preserve bone health in patients with CKD-MBD. This would be timely as our current armamentarium of anti-fracture medications for patients with severe CKD-MBD is limited."
Journal • Chronic Kidney Disease • Metabolic Disorders • Musculoskeletal Diseases • Nephrology • Orthopedics • Osteoporosis • Renal Disease • ATG7 • SQSTM1
December 27, 2024
The Ability of AST-120 to Lower the Serum Indoxyl Sulfate Level Improves Renal Outcomes and the Lipid Profile in Diabetic and Nondiabetic Animal Models of Chronic Kidney Disease: A Meta-Analysis.
(PubMed, Toxins (Basel))
- "AST-120 lowered serum IS and triglyceride levels and improved renal function in animal models of CKD independent of diabetes status. However, AST-120's ability to lower the total cholesterol level was more prominent in animals with diabetic CKD."
Clinical • Journal • Preclinical • Retrospective data • Chronic Kidney Disease • Diabetes • Diabetic Nephropathy • Dyslipidemia • Metabolic Disorders • Nephrology • Renal Disease
August 20, 2024
Now You See Me, Now You Don't: Spontaneous Remission of HCC
(ACG 2024)
- "Labs were notable for chronic HBV co-infection with Hepatitis D, HBV viral load of 60 IU/mL, ALT 91 U/L, AST 120 U/L, total bilirubin 1.4 mg/dL, AFP of 1429 ng/mL...He was referred to medical oncology, who recommended lenvatinib for treatment of unresectable HCC...During this interval, he was started on entecavir 0.5 mg daily for treatment of chronic HBV...MRI abdomen in 11/2017 demonstrated a 93 mm, ill-defined heterogenous mass involving the right lobe of the liver, predominantly in segment 5, 6 and 8 (A). By 12/2018, this mass was no longer recognized (B), and remained as such in 12/2019 (C) and on most recent imaging in 11/2023 (D)."
Clinical • Hepatitis B • Hepatocellular Cancer • Hepatology • Immunology • Infectious Disease • Metabolic Disorders • Metabolic Dysfunction-Associated Steatohepatitis • Pain • Systemic Inflammatory Response Syndrome • Thrombosis • CD4 • IL2 • TNFA
November 27, 2024
AST-120 Protects Cognitive and Emotional Impairment in Chronic Kidney Disease Induced by 5/6 Nephrectomy.
(PubMed, Brain Sci)
- "Our findings demonstrate the potential therapeutic effects of AST-120 in lowering IS levels and improving cognitive and emotional impairments associated with CKD."
Journal • Cardiovascular • Chronic Kidney Disease • CNS Disorders • Cognitive Disorders • Mood Disorders • Nephrology • Psychiatry • Renal Disease • GFAP
August 20, 2024
Plasmablastic Lymphoma in the Duodenum: A Rare and Aggressive disease
(ACG 2024)
- "He was found to be intermittently febrile, and initial laboratory studies were significant for WBC 1.82 K/μL, Hb 6.0 g/dL, platelets 41 K/μL, alkaline phosphatase 603 U/L, AST 120 U/L, ALT 62 U/L, total bilirubin 0.8 mg/dL, CD4 98 cells/μL, and HIV viral load 2,700,455...Figure 2 (right) reveals Endoscopic findings on initial EGD of near-obstructing mass in duodenal sweep and 2nd portion of duodenum. Note: The table for this abstract can be viewed in the ePoster Gallery section of the ACG 2024 ePoster Site or in The American Journal of Gastroenterology's abstract supplement issue, both of which will be available starting October 27, 2024."
B Cell Lymphoma • Diffuse Large B Cell Lymphoma • Gastroenterology • Gastrointestinal Disorder • Hematological Disorders • Hematological Malignancies • Hepatology • Human Immunodeficiency Virus • Infectious Disease • Leukemia • Liver Failure • Lymphoma • Non-Hodgkin’s Lymphoma • Oncology • Pain • CD4
August 20, 2024
A Challenging Diagnosis of Low-grade Appendiceal Mucinous Neoplasm Mimicking Ovarian Cancer and Primary Biliary Cholangitis
(ACG 2024)
- "Labs showed WBC 12.8 k/mm3, lactic acid 2.4 mmol/l, creatinine 5.43 mg/dl (baseline 0.7 mg/dl), AST 120 iu/l, ALT 58 u/l, alkaline phosphatase 468 u/l, and total bilirubin 6.7 mg/dl...Additionally, colorectal cancer should be excluded with a colonoscopy in these patients due to the associated risks. Figure: A. Magnetic Resonance Imaging of the Abdomen and Pelvis without contrast showing moderate to large amounts of abdominal ascites."
Acute Kidney Injury • Appendix Cancer • Colorectal Cancer • Gynecology • Hepatology • Immunology • Nephrology • Oncology • Ovarian Cancer • Primary Biliary Cholangitis • Renal Disease • Solid Tumor • CA 19-9 • MUC16
September 23, 2024
Effect of Oral Absorbent Therapy on Kidney Progression According to the Cause of CKD
(KIDNEY WEEK 2024)
- "Changes in Serum Cr Before and After Drug Therapy Over One Year in Each Etiology Group Background: Oral absorbent therapy with DW-7202 (Renemezin®) and AST-120 (Kremezin®) slows the progression of CKD... These findings suggest that oral absorbent therapy has different effects depending on the cause of CKD. The treatment significantly alleviated CKD progression in patients with HTN, DM, ADPKD, and unknown etiology compared to those with GN."
Autosomal Dominant Polycystic Kidney Disease • Chronic Kidney Disease • Polycystic Kidney Disease
September 02, 2024
AST-120 alleviates renal ischemia-reperfusion injury by inhibiting HK2-mediated glycolysis.
(PubMed, Mol Med)
- "In conclusion, AST-120 alleviates renal IRI via suppressing HK2-mediated glycolysis, which suppresses H3K18 lactylation and further reduces HK2 levels. This study proposes a novel mechanism by which AST-120 alleviates IRI."
Journal • Acute Kidney Injury • Cardiovascular • Nephrology • Renal Disease • Reperfusion Injury • HK2
August 23, 2024
Electrospun EVOH/AST-120 hybrid nanofiber membranes for removal of indoxyl sulfate from blood.
(PubMed, RSC Adv)
- "Furthermore, the nanofibers successfully reduced the IS concentration in the blood under circulating conditions. Therefore, these EVOH/AST-120 nanofibers are expected to greatly improve the prognosis of patients with CKD when used in combination with the current hemodialysis therapy as an IS-adsorbing filter."
Journal • Chronic Kidney Disease • Nephrology • Renal Disease
July 11, 2024
A case of chronic kidney disease with refractory periodic vomiting and hypertension in a pediatric patient.
(PubMed, CEN Case Rep)
- "In Japan, the uremic toxin adsorbent AST-120 and angiotensin-converting enzyme inhibitor-I (ACE-I) are not strongly recommended for CKD patients...However, our patient had low serum levels of proinflammatory cytokines, and his serum levels of the chemokines CX3CL1 and CCL2 decreased with age, together with improvement in his clinical course. Therefore, some specific chemokines might be diagnostic and/or prognostic biomarkers of CKD."
Journal • Atherosclerosis • Cardiomyopathy • Cardiovascular • Chronic Kidney Disease • Dyslipidemia • Gastrointestinal Disorder • Hypertension • Nephrology • Pediatrics • Renal Disease • CCL2 • CX3CL1
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