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. 2026 Aug 24;17:1691999. doi: 10.3389/fphar.2026.1691999

TABLE 3.

Antifibrotic role of curcumin in urinary system fibrosis.

Disease Animal/cell model Inducer Dosage and duration Described effects Pathway Reference
Renal fibrosis In vitro: HKC TGF-β1 (5 mg/mL) Curcumin (3.125, 6.25, 12.5, 25, and 100 μmol/L for 72 h) ↑: Retained epithelial morphology, a cobblestone growth pattern, E-cadherin, and cytokeratin
↓: Proliferation, vimentin and α-SMA, FSP 1-positive cells, p-AKT, mTOR, p70S6K, 4E-BP1, and eIF4E
AKT/mTOR pathway Zhu et al. (2017)
Renal fibrosis In vivo: BALB/c mice (n = 48) Clamping the renal pedicles with non-traumatic microaneurysm clamps ​ ↑: APPL1
↓: Serum creatinine (SCr), urea nitrogen, tubular epithelial cell injury, kidney injury, collagen deposition, fibrotic, collagen I, fibronectin (Fn), and ECM
APPL1/AKT signaling pathway Chen et al. (2018)
In vitro: EpiCM-a ​ Curcumin (25 µM) ↑: APPL1
↓: p-AKT, collagen І, and Fn protein
APPL1/AKT signaling pathway
Chronic kidney disease (CKD) In vivo: female C57BL/6 mice (n = 72) Cyclosporine A (15 mg/kg, s.c.) for 14 days Curcumin (15 mg/kg/day, i.p.) for 14 days ↓: PAI-1, α-SMA, and collagen I - Hu et al. (2016)
In vitro: HK-2 cells Primary ​ ↓: Proliferation, PAI-1, α-SMA, and collagen I
In vitro: HK-2-Si KL (klotho) cells Primary Si KL ​ ↑: PAI-1, α-SMA, and collagen I
↓: Klotho; Dnmt 1; methylation; and CpG249, 240, and 236
Acute kidney injury (AKI) and CKD In vitro: HUVECs TGF-β1 (5 mg/mL) Curcumin solution (10 mg/mL) + ZnSO4 solution (1.61 mg/mL) ↑: HIF-1α, VEGF, ROS, and cellular survival capacity and proliferation
↓: α-SMA, collagen I, Fn, and F-actin
- Zhang et al. (2022)
Peritoneal fibrosis HMrSV5 Dianeal (4.25%, 200 μL) Curcumin (20, 40, and 80 μmol/L) ↑: Cell viability and E-cadherin
↓: α-SMA, collagen I, Fn, TGF-β, p-TAK 1, p-JNK, and p-p38
EMT Zhao et al. (2019a)
Tubulointerstitial fibrosis In vitro: HK-2 cells TGF-β1 (2.5 mg/mL) Curcumin (10 μM) ↑: PPARγ
↓: TβR-I, TβR-II, p-ERK, p-PPARγ, α-SMA, PAI-1, and E-cadherin
-: p-Smad2 and p-Smad3
ERK Li et al. (2013)
Renal fibrosis In vivo: male SD rats (n = 30 + 40) Cisplatin (4.5 mg/kg i.p. for 21 days) Curcumin (300 mg/kg for 21 days) ↑: Creatinine clearance, urea nitrogen, SCr, and urea levels in serum and urine,
↓: TGF-β1, α-SMA, HYP, Shh, Smo, Ptch, renal Gli1 and Gli2, fibrotic score, kidney injury score, tubular injury, and α-SMA (renal)
Hedgehog signaling Maghmomeh et al. (2019)
Chronic renal failure Male SD rats (n = 70) 5/6 Nephrectomy Curcumin (75 mg/kg for 8 weeks) ↑: Body weight
↓: Biochemical indexes (24-h urine volume, SBp, 24-h urine protein, blood urea nitrogen (BUN), SCr, and serum urea), glomerular diameter, HYP, p-mTOR, mTOR, p-P70S6K1, P70S6K1, P-4E-BP1, 4E-BP1, HIF-1α, and VEGF
mTOR/HIF-1α/VEGF signaling pathway Yangbiao He (2019)
Obstructive nephropathy In vivo: male SD rats (n = 40) Unilateral ureteral obstruction (UUO) Curcumin (200 and 800 mg/kg for 14 days) ↑: AP-1
↓: Renal cortical NF-κB-DNA binding activity, ED-1-positive cell, type III collagen, MCP-1, TGF-β, PAI-1, ICAM-1, RANTES, collagen III
NF-κB-dependent pathway Kuwabara et al. (2006)
Nephrolithiasis In vivo: male C57BL/6 mice (n = 32) Glyoxylate (100 mg/kg for 1 week) Curcumin (50 and 100 mg/kg for 14 days) ↑: SOD, CAT, GPx, GR, GSH, HO-1, NQO1, UGT, NRF2, and p62↓: Calcium oxalate (CaOx), MDA, IL-6, MCP-1, OPN, CD44, α-SMA, collagen I, collagen fibril deposition, TUNEL-positive cells, Beclin-1, LC3 II, and LC3 II/I NRF2 signaling pathway Li et al. (2019)
Renal fibrosis SD rats 5/6 Nephrectomy Curcumin (75 mg/kg for 8 weeks) ↑: Plasma creatinine, right kidney weight, CCr, NRF2, HO-1, and GPX
↓: Creatinine clearance, oxidative stress, inflammation, renal fibrosis, left kidney weight, proteinuria, BUN, Keap-1, MDA, TNF-α, COX-2, NF-κB, and TGF-β
-: Body weight, total cholesterol, triglyceride, and HDL cholesterol
NRF2/Keap-1 Soetikno et al. (2012)
Renal fibrosis In vivo: 20 male Wistar rats Cisplatin (5 mg/kg) i.p. Curcumin (200 mg/kg) ↑: CAT, NAG, GR, NRF2, claudin-2, occludin, E-cadherin, and β-catenin
↓: Plasma creatinine, BUN, MDA, NGAL, KIM-1, ATN, cleaved caspase 3, TGF-β1, collagen I, collagen IV, α-SMA, Hsp70/72, protein tyrosine nitration (3-NT), and PKC β2
Oxidative stress Trujillo et al. (2016)
Renal interstitial fibrosis (RIF) In vivo: male SD rats (n = 24) UUO Curcumin (200 mg/kg for 7 and 14 days) ↑: Complex I, II, III, and IV; LC3B–LC3A ratio; and Beclin-1
↓: Tubulointerstitial injury, RIF, collagen I, collagen III, NLRP3, caspase-1, IL-1β, MAVS, VDAC1, VDAC2, autophagosomes, PI3K, AKT, and mTOR
PI3K/AKT/mTOR pathway Lu et al. (2021a)
Chronic kidney disease (CKD) In vivo: male SD rats Monoclonal antibody OX-7 (2.2 mg/kg) Curcumin (100 mg/kg) ↑: HO-1
↓: PAI-1, TGF-β, Fn, proteinuria, Fn production, and glomerular PAS-positive material
TGF-β Jens Gaedeke (2005)
AKI and CKD In vitro: NRK-49F cells TGF-β1 (5 mg/mL) Curcumin solution (10 mg/mL) + ZnSO4 solution (1.61 mg/mL) ↑: ROS, cellular survival capacity, and cellular proliferation
↓: α-SMA, collagen I, Fn (Fn), and F-actin
TGF-β pathway Zhang et al. (2022)
Renal fibrosis In vivo: male C57 mice (n = 32) UUO Curcumin (50 and 100 mg/kg for 14 days) ↑: PPARγ
↓: Collagen fibers, Fn, collagen I, α-SMA, PCNA, and p-Smad2/3
TGF-β1 signaling pathway Zhou et al. (2014)
In vitro: NRK-49F cells - Curcumin (10, 20, and 30 μM) ↑:
↓: Proliferation, α-SMA, PCNA, cyclin D1, and p-Smad2/3
In vitro: NRK-52E cells Curcumin (10, 20, and 30 μM) Proliferation (−)
Renal fibrosis (unilateral ureteral obstruction) In vivo: male SD rats (n = 30) UUO Curcumin (50 and 100 mg/kg for 8 weeks) ↓: SCr, BUN levels, tubular injury, TGF-β1, P-Smad2/3, cleaved caspase-3, cleaved caspase-8, Dragon levels, and apoptosis TGF-β1/Smad signaling pathway Chen et al. (2021)
In vitro: HK-2 cells TGF-β1 (5 mg/mL for 48 h) Curcumin (10, 20, and 30 μM) ↑: E-cadherin and vimentin
↓: Dragon, Fn, collagen I, collagen IV, and α-SMA
Ischemia reperfusion injury (IRI) In vitro: PC3 human prostate cells, LLC-PK1, and primary porcine kidney endothelial cells Hypoxic atmosphere (95% N2, 5% O2, Bactal 2 gas Air Liquide) Curcumin (65 mmol/L) ↑: Viability
↓: Mitochondrial loss of function, endothelial activation, LDH, TLR4, P-selectin, ICAM1, TNF-α, and MCP 1
TLR Thuillier et al. (2014)
RIF In vivo: male C57 BL/6 mice (n = 18) UUO Curcumin (50 mg/kg/day for 14 days) ↑: E-cadherin
↓: SCr, BUN, IL-1β, IL-6, TNF-α, TGF-β1, α-SMA, ECM collagen, vimentin, TLR4, and NF-κB P65
TLR4/NF-κB and PI3K/AKT signaling pathways Wang et al. (2020)
In vitro: HK-2 cells TGF-β1 (10 ng/mL for 48 h) Curcumin (10 ng/mL for 48 h) ↑: α-SMA and vimentin
↓: Viability, TLR4, NF-κB P65, IL-1β, IL-6, and TNF-α
Diabetic nephropathy In vivo: male Wistar rats Streptozotocin (100 mg/kg body weight) Curcumin (10 Mg/kg/day for 56 days) ↑: Wnt 5α, β-catenin, and TOP–FOP ratio
↓: TGF-β1 and 8-OH-d
Wnt/β-catenin/TGF-β1 Ho et al. (2016)
Uric acid nephropathy Male Wistar rats (n = 30) Adenine (150 mg/kg) + potassium oxonate (250 mg/kg) oral gavage for 4 weeks Curcumin (200 mg/kg for 8 weeks) ↑: SCFAs, ZO-1, occluding, and claudin-1
↓: Serum uric acid, SCr, BUN level, kidney index, and LPS
Intestinal flora Xu et al. (2021)
CKD Male SD rats (n = 48) Adenine (0.25% w/w in feed for 35 days) Curcumin (37.5, 75, and 150 mg/kg for 35 days) ↑: Plasma sclerostin concentrations, NRF2 (kidney), glutathione, diffuse acute tubular necrosis, interstitial fibrosis, apoptotic cells, dilatation of tubules, interstitial inflammatory cell infiltration, and tubular atrophy
↓: IL-1β, IL-6, TNF-α, and cystatin C
-: BP
- Ali et al. (2017)
IRI In vivo: large white male pigs Clamping the right renal pedicle for 60 min with a vascular non-traumatic clamp Curcumin (12 mg/mL) ↑: IL-1Rn, complement C3, pro-fibrotic genes PAI-1, and vimentin
↓: Creatinine values (day 5, 7, 11, and 14), ED 1, CD 3, vimentin, and α-SMA
- Thuillier et al. (2014)
AKI and CKD In vivo: male SD rats 2/3 Nephrectomy Curcumin solution (10 mg/mL) + ZnSO4 solution (1.61 mg/mL) ↑: vWF
↓: α-SMA, SCr, and BUN
-: ALT, AST, TP, and ALB
- Zhang et al. (2022)
CKD In vitro: primary rat mesangial cells - Curcumin (10 μM) ↑: HO-1 - Jens Gaedeke (2005)