Review Article

Bioactive Substances in Safflower Flowers and Their Applicability in Medicine and Health-Promoting Foods

Table 3

Studies on the use of HSYA for medical purposes (from 2018 to 2020).

Test organismType of test/parameterConcentration/doseAuthors

In vitro: LAD2 (human mast cells) and MPMCs (mouse peritoneal mast cells)Intracellular Ca2+ mobilization assay/imaging with excitation at 488 nm50 μM, 100 μM, and 200 μM HSYA (pH 7.4)[57]
In vitro: LAD2 (human mast cells)MTT assay (cell viability assay)/absorbance at 490 nm1 μM, 10 μM, 50 μM, 100 μM, 200 μM, and 400 μM
β-Hexosaminidase release assay/absorbance at 405 nm50 μM, 100 μM, and 200 μM
ELISA kits (human chemokine array kits)/measurements of cytokines (levels of TNF-α, interleukin- (IL-) 8, and MCP-1)
LC-ESI-MS/MS (liquid chromatography-electrospray ionization-tandem mass spectrometry)/histamine release assay
In vitro: protein extracted from LAD2 cellsWestern blot analysis (ECL kit)/protein expression (transillumination)
In vivo: miceHindpaw swelling and extravasation assay/optical density at 620 nm0, 2.5 mg/kg, 5 mg/kg, 10 mg/kg HSYA in saline

In vivo: miceELISA kits/assay the levels of testosterone, estradiol, progesterone, luteinizing hormone, follicle-stimulating hormone, anti-Müllerian hormone (AMH)3.5 mg kg-1 HSYA in 0.1 ml, injection[46]

In vitro: INS-1 (rat insulinoma cells)Cell viability assay/absorbance at 570 nm200 μM, 400 μM, 800 μM, and 1600 μM[44]
Western blot analysis/protein expression (transillumination, band densities)800 μM
Insulin ELISA kit/glucose stimulated insulin secretion

In vivo: ratsAnthrone method/hepatic glycogen in the liver120 mg/kg, for 8 weeks[59]
WST-8 method/glycogen synthase
Fasting blood glucose/glucometer test
Oral glucose tolerance test/glucometer test (0, 30, 60, and 120 minutes after oral administration with glucose solution)
Assay kits/fasting blood insulin, triglycerides, total serum cholesterol, high-density lipoprotein cholesterol, low-density lipoprotein cholesterol in serum
Western blot analysis/protein expression

In vitro: HK-2 (renal tubular epithelial cells)Western blot analysis/protein expression10 mg/ml HSYA[60]
Cellular immunofluorescence assay/photographing (fluorescent inverted microscope)
In vivo: ratsELISA kit/interleukin-6 levels, tumor necrosis factor-α levelDoses of 10 mg/kg daily, intragastrically, for 6 weeks
RT-qPCR assay (PCR)/relative expression level of miRNA-140-5p
BCA method (based on T-AOC and MDA kit)/protein concentrations

In vitro: PC12 (pheochromocytoma cell line)MTT assay/cell viability5 μM, 10 μM, 20 μM, 40 μM, and 80 μM[63]
Total mRNA (amount and purity)/absorbance at 260/280 nm10 μM
Western blot/protein expression
In vitro: b.End3 (mouse brain microvascular endothelial cells)Immunofluorescence assay/immunofluorescence (confocal microscopy)20 μM
In vivo: ratsTherapeutic effect in vivo/infarct area, ratio of infarct volume to whole brain tissue10 mg/kg, 20 mg/kg

In vitro: NSCs (neural stem cells of rats)CCK-8 assay/absorbance at 450 nm1 μM, 5 μM, and 10 μM[65]
EdU assay/cell proliferation rate
Cell apoptosis/BD FACSCalibur flow cytometry
Western blot analysis/protein expression

In vivo: miceHanging wire test/hanging time20 mg/kg/d, for 28 days[66]
Western blot analysis/protein expression

In vivo: miceIPGTT (intraperitoneal glucose tolerance test), IPITT (intraperitoneal insulin tolerance test)/glucose and insulin tolerance tests200 mg/kg/d HSYA, for 10 weeks[50]
2−DDCt method/expression of antioxidant enzymes in the liver and adipose tissue
In vitro: HepG2 cells and 3T3-L1 adipocytes2−DDCt method/expression of antioxidant enzymes3T3-L1 adipocytes: 10, 50, and 100 mg/l HSYA for 24 h; HepG2 cells: 10, 50, and 100 mg/l SY for 24 h
ALP activity assay/percentage of ALP activity
Caspase colorimetric assay kit/caspase-3 activity assay
Annexin V-FITC/IP staining kit/percentage of apoptotic cells
Western blot analysis/protein expression
HOP and HOM concentration in serum

In vitro: HSAEC1-KT HSAECs (human small airway epithelial cells)ELISA kits/concentrations of inflammatory cytokines (IL-6, IL-1β, and TNF-α)9, 27, and 81 mmol/l[74]
Western blot analysis/protein expression
Calcium-sensitive fluorescent probe Fluo-3/AM/intracellular calcium ion concentration
Dual-luciferase reporter assay/transcriptional activities of NF-κB and AP1

In vivo: ratsDouble-staining method (with Tcc and Evans blue stains)/infarct size5 mg/kg HSYA; intraperitoneally injected[47]
ELISA kits/cTnI, IL-6, and LdH levels
Flow cytometry analysis, TUNEL (terminal deoxynucleotidyl transferase-mediated dUTP nick-end labeling)/apoptosis level
In vitro: H9c2 (rat cardiomyoblast cells)ELISA/caspase-3 activity20 μM
CCK-8/cell viability
Western blot analysis/protein expression
Span diagnostic reagent kit/serum glutamic oxaloacetic transaminase
Span diagnostic reagent kit/serum alkaline phosphatase
Agappe diagnostic kit/serum total bilirubin

In vivo: miceSP kit (MMP-2, MMP-9, and COX-2)/immunohistochemical analysis1.125 mg/kg, 2.25 mg/kg, intraperitoneally, for 14 days[91]
In vitro: H22 (murine hepatoma cells), HepG2 (human hepatocellular carcinoma cells)Growth inhibition assay—CCK-8/rate of growth inhibition (IC50 80 μM for 72 h)40, 60, 80, 120, and 160 μM, for 24, 48, and 72 h
Western blot analysis/protein expression
Clonogenic assay/optical density at 570 nm
Wound healing assay/cell migration, via Image-Pro Plus

In vitro: KYSE-30 cells (esophageal cancer cells)CCK-8 assay/proliferative activity (optical density of cells)0,1, 1, 10, 20, and 50 μM, for 24, 48, and 72 h[92]
Microscopic measurement of the number of cells/cell invasion and cell migration assays20 μM, for 24 h
Flow cytometric analysis of cell apoptosis/apoptotic rate of cells
Western blot analysis/protein expression
Serum levels of AFP, ALT, TBIL, and ALB/automatic analyzer

In vitro: A2780/DDP (ovarian carcinoma cells)Cytotoxicity assay (CCK-8)/cell survival rates1 mg/ml[45]
RTCA test (real-time cellular analysis)/monitoring cell proliferation
Flow cytometry (Guava EasyCyte Plus)/evaluation of apoptosis1 mg/ml, for 24
In vivo: miceElectronic digital caliper/weekly measurement of tumor size and volume1.1 g/kg body weight; once every three days, for five weeks
Western blot analysis/protein expression

In vitro: SKOV-3 (ovarian carcinoma cells)Cell proliferation assay kit/cell proliferation10, 20, 50, 100, and 150 mg/l, for 72 h[90]
CellTiter-Blue Cell Viability kit/cell viability assay10, 20, 50, 100, and 150 mg/l, for 48 h
Western blot analysis (protein concentration assay kit)/protein expression10, 20, 50, 100, and 150 mg/l

n.d.: no date; SY: carthamine; HOP: hydroxyproline; HOM: hexosamine; CCK-8: cell counting kit.