1.Ethanol extract of Herpetospermum caudigerum Wall ameliorates psoriasis-like skin inflammation and promotes degradation of keratinocyte-derived ICAM-1 and CXCL9.
Ya ZHONG ; Bo-Wen ZHANG ; Jin-Tao LI ; Xin ZENG ; Jun-Xia PEI ; Ya-Mei ZHANG ; Yi-Xi YANG ; Fu-Lun LI ; Yu DENG ; Qi ZHAO
Journal of Integrative Medicine 2023;21(6):584-592
OBJECTIVE:
To explore whether the ethanol extract of Herpetospermum caudigerum Wall (EHC), a Xizang medicinal plant traditionally used for treating liver diseases, can improve imiquimod-induced psoriasis-like skin inflammation.
METHODS:
Immunohistochemistry and immunofluorescence staining were used to determine the effects of topical EHC use in vivo on the skin pathology of imiquimod-induced psoriasis in mice. The protein levels of interferon-γ (IFN-γ), tumor necrosis factor-α (TNF-α), and interleukin-17A (IL-17A) in mouse skin samples were examined using immunohistochemical staining. In vitro, IFN-γ-induced HaCaT cells with or without EHC treatment were used to evaluate the expression of keratinocyte-derived intercellular cell adhesion molecule-1 (ICAM-1) and chemokine CXC ligand 9 (CXCL9) using Western blotting and reverse transcription-quantitative polymerase chain reaction. The protein synthesis inhibitor cycloheximide and proteasome inhibitor MG132 were utilized to validate the EHC-mediated mechanism underlying degradation of ICAM-1 and CXCL9.
RESULTS:
EHC improved inflammation in the imiquimod-induced psoriasis mouse model and reduced the levels of IFN-γ, TNF-α, and IL-17A in psoriatic lesions. Treatment with EHC also suppressed ICAM-1 and CXCL9 in epidermal keratinocytes. Further mechanistic studies revealed that EHC suppressed keratinocyte-derived ICAM-1 and CXCL9 by promoting ubiquitin-proteasome-mediated protein degradation rather than transcriptional repression. Seven primary compounds including ehletianol C, dehydrodiconiferyl alcohol, herpetrione, herpetin, herpetotriol, herpetetrone and herpetetrol were identified from the EHC using ultra-performance liquid chromatography-quadrupole-time of flight-mass spectrometry.
CONCLUSION
Topical application of EHC ameliorates psoriasis-like skin symptoms and improves the inflammation at the lesion sites. Please cite this article as: Zhong Y, Zhang BW, Li JT, Zeng X, Pei JX, Zhang YM, Yang YX, Li FL, Deng Y, Zhao Q. Ethanol extract of Herpetospermum caudigerum Wall ameliorates psoriasis-like skin inflammation and promotes degradation of keratinocyte-derived ICAM-1 and CXCL9. J Integr Med. 2023; 21(6): 584-592.
Animals
;
Mice
;
Interleukin-17/metabolism*
;
Intercellular Adhesion Molecule-1
;
Imiquimod/adverse effects*
;
Tumor Necrosis Factor-alpha/metabolism*
;
Ligands
;
Psoriasis/chemically induced*
;
Keratinocytes
;
Inflammation/drug therapy*
;
Chemokines/metabolism*
;
Interferon-gamma/metabolism*
;
Disease Models, Animal
;
Mice, Inbred BALB C
2.Immune and coagulation profiles in 3 adults with multisystem inflammatory syndrome.
Ruth Xian Lynn YAP ; Bernard Pui Lam LEUNG ; Hwee Siew HOWE ; Mung Ee LOH ; Barnaby Edward YOUNG ; Bingwen Eugene FAN ; Xin Rong LIM
Annals of the Academy of Medicine, Singapore 2023;52(2):80-87
INTRODUCTION:
There is a paucity of information on the cytokine, complement, endothelial activation, and coagulation profiles of multisystem inflammatory syndrome in adults (MIS-A), a rare but serious complication following recovery from SARS-CoV-2 infection. We aim to examine the immune biomarker and coagulation profiles in association with the clinical presentation and course of MIS-A.
METHOD:
The clinical features of MIS-A patients admitted to our tertiary hospital were documented. Their levels of interleukin (IL)-1β, IL-6, IL-10, IL-17, IL-18, interferon-α (IFN-α), IFN-γ, interferon gamma-induced protein 10 (IP-10), tumour necrosis factor (TNF)-α, monocyte chemoattractant protein (MCP)-1, complement activation product (complement 5a [C5a]), and endothelial biomarker intercellular adhesion molecule-1 (ICAM-1) levels were assayed. The haemostatic profile was assessed with standard coagulation testing and thromboelastography.
RESULTS:
Three male patients were diagnosed with MIS-A at our centre from January to June 2022 with a median age of 55 years. All had tested positive for SARS-CoV-2 12-62 days prior to MIS-A presentation, with gastrointestinal and cardiovascular systems as the most commonly involved. Levels of IL-6, IL-10, IL-18, IP-10 and MCP-1 were raised whereas IL-1β, IFN-α, IFN-γ, IL-17 and TNF-α remained normal. Markedly elevated levels of C-reactive protein (CRP), ferritin and ICAM-1 were present in all. C5a was elevated in 2 patients. A hypercoagulable state was demonstrated by raised levels of D-dimer, factor VIII, von Willebrand factor antigen, and ristocetin cofactor with corresponding raised parameters in thromboelastography in the 2 patients who had their coagulation profile assessed.
CONCLUSION
MIS-A patients demonstrate activation of pro-inflammatory cytokines, endotheliopathy, complement hyperactivation and hypercoagulability.
Humans
;
Adult
;
Male
;
Middle Aged
;
COVID-19/complications*
;
Interleukin-10
;
Interleukin-18
;
Intercellular Adhesion Molecule-1
;
Interleukin-17
;
Chemokine CXCL10
;
Interleukin-6
;
SARS-CoV-2
;
Connective Tissue Diseases
;
Hemostatics
3.Mechanism of total flavonoids of Ziziphora clinopodioides in improving atherosclerosis by regulating PI3K/Akt/mTOR pathway.
Xiao-Yu MA ; Hao-Ran ZHAO ; Hui-Lin QIAO ; You-Cheng ZENG ; Xuan-Ming ZHANG
China Journal of Chinese Materia Medica 2023;48(2):465-471
The present study observed the regulatory effect of total flavonoids of Ziziphora clinopodioides on autophagy and the phosphatidylinositol 3-kinase(PI3K)/protein kinase B(Akt)/mammalian target of rapamycin(mTOR) signaling pathways in ApoE~(-/-) mice and explored the mechanism of total flavonoids of Z. clinopodioides against atherosclerosis(AS). ApoE~(-/-) mice were fed on a high-fat diet for eight weeks to induce an AS model. The model mice were randomly divided into a model group, a positive control group, and low-, medium-and high-dose groups of total flavonoids of Z. clinopodioides, while C57BL/6J mice fed on a common diet were assigned to the blank group. The serum and aorta samples were collected after intragastric administration for 12 weeks, and the serum levels of total cholesterol(TC), triglyceride(TG), low density lipoprotein-cholesterol(LDL-C), and high density lipoprotein-cholesterol(HDL-C) were detected by an automatic biochemical analyzer. The serum expression levels of intercellular adhesion molecule-1(ICAM-1), vascular cell adhesion molecule-1(VCAM-1), matrix metalloproteinase-2(MMP-2), and matrix metalloprotei-nase-9(MMP-9) were detected by enzyme-linked immunosorbent assay(ELISA). Oil red O staining was used to observe the aortic plaque area in mice. Hematoxylin-eosin(HE) staining was used to observe the aortic plaque and pathological changes in mice. The expression of P62 and LC3 in the aorta was detected by the immunofluorescence method. The protein expression of LC3Ⅱ/Ⅰ, Beclin-1, P62, p-PI3K, p-Akt, and p-mTOR in the aorta of mice was detected by Western blot. The results showed that compared with the blank group, the serum levels of TC, TG, LDL-C, ICAM-1, VCAM-1, MMP-2 and MMP-9 in the model group were significantly increased(P<0.01 or P<0.05), the content of HDL-C was decreased(P<0.05), intra-aortic plaque area was enlarged(P<0.01), the expression of LC3 in the aorta was significantly down-regulated, P62 expression was up-regulated(P<0.01 or P<0.05), the expressions of LC3Ⅱ/Ⅰ and Beclin-1 in the aortic lysate were significantly down-regulated, and the expressions of p-PI3K, p-Akt, p-mTOR and P62 were significantly increased(P<0.01). The medium-and high-dose groups of total flavonoids of Z. clinopodioides could reduce the serum levels of TC, TG, LDL-C, ICAM-1, VCAM-1, MMP-2, and MMP-9 in AS model mice(P<0.01 or P<0.05), and increase the content of HDL-C(P<0.01 or P<0.05). The aortic plaque area of mice after middle and high doses of total flavonoids of Z. clinopodioides was significantly reduced(P<0.01), the content of foam cells decrease, and the narrowing of the lumen decreased. The total flavonoids of Z. clinopodioides significantly increased the expression of LC3 in the aorta and the expression of LC3Ⅱ/Ⅰ and Beclin-1 in the lysate, and decreased the expression of P62 in the aorta and the expression of p-PI3K, p-Akt, p-mTOR and P62 in the lysate(P<0.01 or P<0.05). The results showed that the total flavonoids of Z. clinopodioides could improve the content of blood lipids and inflammatory factors, and reduce the generation of foam cells and plaques in aortic tissue, and the mechanism may be related to the regulation of PI3K/Akt/mTOR signaling pathway.
Animals
;
Mice
;
Apolipoproteins E
;
Atherosclerosis/genetics*
;
Beclin-1
;
Cholesterol, LDL
;
Intercellular Adhesion Molecule-1
;
Matrix Metalloproteinase 2/genetics*
;
Matrix Metalloproteinase 9/genetics*
;
Mice, Inbred C57BL
;
Phosphatidylinositol 3-Kinases/metabolism*
;
Plaque, Atherosclerotic
;
Proto-Oncogene Proteins c-akt/metabolism*
;
TOR Serine-Threonine Kinases/genetics*
;
Vascular Cell Adhesion Molecule-1/genetics*
4.Effect of Isodon ternifolius-medicated serum on hepatic stellate cells based on TLR4/NF-κB/NLRP3 signaling pathway.
Gui-Dong HUANG ; Zhi-Pin ZHOU ; Zhi PANG ; Le QIN ; Rui-Sheng WU ; Yong CHEN ; Xiao-Xue YE
China Journal of Chinese Materia Medica 2023;48(14):3913-3921
The present study aimed to investigate the inhibitory effect and mechanism of Isodon terricolous-medicated serum on lipopolysaccharide(LPS)-induced hepatic stellate cell(HSC) activation. LPS-induced HSCs were divided into a blank control group, an LPS model group, a colchicine-medicated serum group, an LPS + blank serum group, an I. terricolous-medicated serum group, a Toll-like receptor 4(TLR4) blocker group, and a TLR4 blocker + I. terricolous-medicated serum group. HSC proliferation was detected by methyl thiazolyl tetrazolium(MTT) assay. Enzyme-linked immunosorbent assay(ELISA) was used to measure type Ⅰ collagen(COL Ⅰ), COL Ⅲ, transforming growth factor-β1(TGF-β1), intercellular adhesion molecule-1(ICAM-1), α-smooth muscle actin(α-SMA), vascular cell adhesion molecule-1(VCAM-1), cysteinyl aspartate-specific proteinase-1(caspase-1), and monocyte chemotactic protein-1(MCP-1). Real-time PCR(RT-PCR) was used to detect mRNA expression of TLR4, IκBα, and NOD-like receptor thermal protein domain associated protein 3(NLRP3), nuclear factor-κB(NF-κB) p65, gasdermin D(GSDMD), and apoptosis-associated speck-like protein containing a CARD(ASC) in HSCs. Western blot(WB) was used to detect the protein levels of TLR4, p-IκBα, NF-κB p65, NLRP3, ASC, and GSDMD in HSCs. The results showed that I. terricolous-medicated serum could inhibit the proliferation activity of HSCs and inhibit the secretion of COL Ⅰ, COL Ⅲ, α-SMA, TGF-β1, caspase-1, MCP-1, VCAM-1, and ICAM-1 in HSCs. Compared with the LPS model group, the I. terricolous-medicated serum group, the colchicine-medicated serum group, and the TLR4 blocker group showed down-regulated expression of p-IκBα, NLRP3, NF-κB p65, GSDMD, and ASC, and up-regulated expression of IκBα. Compared with the TLR4 blocker group, the TLR4 blocker + I. terricolous-medicated serum group showed decreased expression of TLR4, p-IκBα, NLRP3, NF-κB p65, GSDMD, and ASC, and increased expression of IκBα. In conclusion, I. terricolous-medicated serum down-regulates HSC activation by inhibiting the TLR4/NF-κB/NLRP3 signaling pathway.
NF-kappa B/metabolism*
;
Hepatic Stellate Cells
;
Transforming Growth Factor beta1/metabolism*
;
NF-KappaB Inhibitor alpha/metabolism*
;
Intercellular Adhesion Molecule-1/metabolism*
;
Isodon
;
NLR Family, Pyrin Domain-Containing 3 Protein/metabolism*
;
Toll-Like Receptor 4/metabolism*
;
Vascular Cell Adhesion Molecule-1/metabolism*
;
Lipopolysaccharides/pharmacology*
;
Signal Transduction
;
Colchicine/pharmacology*
;
Caspases
5.Salidroside alleviates retinopathy in diabetes rats by inhibiting oxidative stress and immune inflammation through activating PI3K/AKT pathway.
Chinese Journal of Cellular and Molecular Immunology 2023;39(5):404-409
Objective To investigate the ameliorative effect of salidroside on diabetes retinopathy (DR) rats and its mechanism. Methods Male SD rats were randomly divided into blank group, model group, low-dose and high-dose salidroside treatment groups. Except for the blank group, other groups were modeled by intraperitoneal injection of streptozotocin. After successful modeling, treatment groups were injected intraperitoneally with [50 mg/(kg.d)] and [100 mg/(kg.d)] salidroside respectively, for 4 weeks; the blank group and model group were injected with corresponding doses of saline. ELISA was used to measure the expression levels of antioxidant-related enzyme activity and inflammatory factors in blood glucose and serum of rats in each group. Retinal tissue lesions were detected by HE staining, and the expression of vascular endothelial growth factor (VEGF) and intercellular adhesion molecule 1 (ICAM-1) in retinal tissues were detected by immunohistochemical staining. Western blot analysis was used to detect the expression of phosphatidylinositol 3 kinase (PI3K) , nuclear factor κB p65 (NF-κB p65), phosphorylated p38 MAPK (p-p38 MAPK), and phosphorylated protein kinase B (p-AKT) proteins. Results Compared with model group, salidroside could significantly reduce blood glucose level and increase body mass in DR rats. The serum levels of superoxide dismutase (SOD) and catalase (CAT) were significantly increased, while the levels of malondialdehyde (MDA), tumor necrosis factor α (TNF-α), interleukin 6 (IL-6) and IL-1β were reduced. The protein expression of VEGF, ICAM-1, NF-κB p65 and p-p38 MAPK was significantly decreased, while the protein expression of PI3K and p-AKT was increased. Conclusion Salidroside can reduce DR in rats by inhibiting oxidative stress and immune inflammatory response, which may be related to the reduction of abnormal expression of VEGF and ICAM-1 and the activation of PI3K/AKT signaling pathway.
Animals
;
Male
;
Rats
;
Blood Glucose
;
Diabetes Mellitus
;
Inflammation/metabolism*
;
Intercellular Adhesion Molecule-1/metabolism*
;
NF-kappa B/metabolism*
;
Oxidative Stress
;
Phosphatidylinositol 3-Kinases/metabolism*
;
Proto-Oncogene Proteins c-akt/metabolism*
;
Rats, Sprague-Dawley
;
Retinal Diseases
;
Tumor Necrosis Factor-alpha/metabolism*
;
Vascular Endothelial Growth Factor A/metabolism*
6.Therapeutic effects of the extract of Sancao Formula, a Chinese herbal compound, on imiquimod-induced psoriasis via cysteine-rich protein 61.
Wan-Jun GUO ; Yi WANG ; Yu DENG ; Lin-Yan CHENG ; Xin LIU ; Ruo-Fan XI ; Sheng-Jie ZHU ; Xin-Yi FENG ; Liang HUA ; Kan ZE ; Jian-Yong ZHU ; Dong-Jie GUO ; Fu-Lun LI
Journal of Integrative Medicine 2022;20(4):376-384
OBJECTIVE:
Psoriasis is a common chronic inflammatory skin disease that is prone to recurrence, and the proinflammatory factor, cysteine-rich protein 61 (Cyr61), is important in its pathophysiology. Long-term clinical practice has shown that Sancao Formula (SC), a Chinese herbal compound, is effective in the treatment of psoriasis, but the precise mechanism remains unknown. In this study, we investigate the mechanism by which SC extract alleviates imiquimod (IMQ)-induced psoriasis.
METHODS:
The expression of Cyr61 in psoriatic lesions and normal healthy skin was detected using immunohistochemical analysis to investigate the biological role of Cyr61 in models of psoriatic inflammation. A psoriatic mouse model was established by topical application of IMQ, and the effect of topical application of SC extract was evaluated using the psoriasis area and severity index (PASI) score, hematoxylin-eosin staining, and histopathological features of the skin. Next, a HaCaT cell inflammation model was established using interferon-γ (IFN-γ), and the effect of SC extract on the mRNA and protein levels of Cyr61 and intercellular cell adhesion molecule-1 (ICAM-1) was confirmed using Western blot and quantitative real-time polymerase chain reaction analyses.
RESULTS:
Immunohistochemical staining showed that the expression of Cyr61 in psoriatic lesions was higher than that in normal skin samples (78.26% vs 41.18%, P < 0.05), and the number of Cyr61-positive cells in psoriatic lesions was also significantly higher than in normal skin (18.66 ± 2.51 vs 4.33 ± 1.52, P < 0.05). Treatment in mice with IMQ-induced psoriasis showed that SC extract could significantly improve the inflammatory phenotype, PASI score (10.875 ± 0.744 vs 3.875 ± 0.582, P < 0.05), and pathological features compared with those in IMQ model group; SC treatment was also associated with decreased levels of Cyr61 and ICAM-1. In the IFN-γ-induced inflammatory cell model, the mRNA and protein levels of Cyr61 and ICAM-1 were upregulated, while the SC extract downregulated the levels of Cyr61 and ICAM-1.
CONCLUSION
The results provide a theoretical basis for the involvement of Cyr61 in the pathogenesis of psoriasis, and suggest that SC should be used to target Cyr61 for the prevention of psoriasis recurrence.
Animals
;
China
;
Cysteine-Rich Protein 61/metabolism*
;
Disease Models, Animal
;
Drugs, Chinese Herbal/therapeutic use*
;
Imiquimod/adverse effects*
;
Inflammation/drug therapy*
;
Intercellular Adhesion Molecule-1/genetics*
;
Interferon-gamma
;
Mice
;
Mice, Inbred BALB C
;
Psoriasis/pathology*
;
RNA, Messenger/therapeutic use*
7.Antiplatelet and myocardial protective effect of Shexiang Tongxin Dropping Pill in patients undergoing percutaneous coronary intervention: A randomized controlled trial.
Yan-Jun LIN ; Kun-Li JIAO ; Bo LIU ; Lu FANG ; Shu MENG
Journal of Integrative Medicine 2022;20(2):126-134
BACKGROUND:
High on-clopidogrel platelet reactivity could be partially explained by loss-of-function alleles of CYP2C19, the enzyme that converts clopidogrel into its active form. Shexiang Tongxin Dropping Pill (STDP) is a traditional Chinese medicine to treat angina pectoris. STDP has been shown to improve blood flow in patients with slow coronary flow and attenuate atherosclerosis in apolipoprotein E-deficient mice. However, whether STDP can affect platelet function remains unknown.
OBJECTIVE:
The purpose of this study is to examine the potential effects of STDP on platelet function in patients undergoing percutaneous coronary intervention (PCI) for unstable angina. The interaction between the effects of STDP with polymorphisms of CYP2C19 was also investigated.
DESIGN, PARTICIPANTS AND INTERVENTION:
This was a single-center, randomized controlled trial in patients undergoing elective PCI for unstable angina. Eligible subjects were randomized to receive STDP (210 mg per day) plus dual antiplatelet therapy (DAPT) with clopidogrel and aspirin or DAPT alone.
MAIN OUTCOME MEASURES:
The primary outcome was platelet function, reflected by adenosine diphosphate (ADP)-induced platelet aggregation and platelet microparticles (PMPs). The secondary outcomes were major adverse cardiovascular events (MACEs) including recurrent ischemia or myocardial infarction, repeat PCI and cardiac death; blood biomarkers for myocardial injury including creatine kinase-MB isoenzyme (CK-MB) and high-sensitive troponin I (hsTnI); and biomarkers for inflammation including intercellular cell adhesion molecule-1 (ICAM-1), vascular cell adhesion molecule-1 (VCAM-1), monocyte chemoattractant protein-1 (MCP-1) and galectin-3.
RESULTS:
A total of 118 subjects (mean age: [66.8 ± 8.9] years; male: 59.8%) were included into analysis: 58 in the control group and 60 in the STDP group. CYP2C19 genotype distribution was comparable between the 2 groups. In comparison to the control group, the STDP group had significantly lower CK-MB (P < 0.05) but similar hsTnI (P > 0.05) at 24 h after PCI, lower ICAM-1, VCAM-1, MCP-1 and galectin-3 at 3 months (all P < 0.05) but not at 7 days after PCI (P > 0.05). At 3 months, the STDP group had lower PMP number ([42.9 ± 37.3] vs. [67.8 ± 53.1] counts/μL in the control group, P = 0.05). Subgroup analysis showed that STDP increased percentage inhibition of ADP-induced platelet aggregation only in slow metabolizers (66.0% ± 20.8% in STDP group vs. 36.0% ± 28.1% in the control group, P < 0.05), but not in intermediate or fast metabolizers. The rate of MACEs during the 3-month follow-up did not differ between the two groups.
CONCLUSION:
STDP produced antiplatelet, anti-inflammatory and cardioprotective effects. Subgroup analysis indicated that STDP inhibited residual platelet reactivity in slow metabolizers only.
TRIAL REGISTRATION
This study was registered on www.chictr.org.cn: ChiCTR-IPR-16009785.
Adenosine Diphosphate
;
Angina, Unstable/chemically induced*
;
Animals
;
Biomarkers
;
Clopidogrel
;
Cytochrome P-450 CYP2C19/genetics*
;
Drugs, Chinese Herbal
;
Galectin 3
;
Humans
;
Intercellular Adhesion Molecule-1
;
Male
;
Mice
;
Percutaneous Coronary Intervention/adverse effects*
;
Platelet Aggregation Inhibitors/adverse effects*
;
Vascular Cell Adhesion Molecule-1/genetics*
8.Seabuckthorn Berries Extract Attenuates Pulmonary Vascular Hyperpermeability in Lipopolysaccharide-Induced Acute Lung Injury in Mice.
Lei-Lei DU ; Ying LIU ; Li WAN ; Chu CHEN ; Gang FAN
Chinese journal of integrative medicine 2022;28(12):1081-1087
OBJECTIVE:
To investigate the effect of seabuckthorn berries extract (SBE) on pulmonary vascular hyperpermeability in the mice model of acute lung injury (ALI) induced by lipopolysaccharide (LPS).
METHODS:
Sixty Kunming mice were allocated into 6 groups by a random number table, including control, LPS, dexamethasone (Dex, 1 mg/kg), and 120, 240 and 480 mg/kg SBE groups, 10 mice in each group. Except the control group, mice were pre-treated with Dex and SBE, respectively, for 7 days before LPS was intraperitoneally injected to induce ALI. Pulmonary vascular hyperpermeability was evaluated by histopathologic observation and transvascular leakage determination. Tumor necrosis factor alpha (TNF-α) and interleukin-6 (IL-6) levels in serum were measured using enzyme-linked immunosorbent assay. The expression of nuclear factor-kappa B (NF-κB) p65 in lung cells was determined by immunofluorescence analysis. The contents of cytoplasmic inhibitor of nuclear factor-κB kinase (IKK) and nuclear p65, as well as downstream proteins of E-selectin (CD62E) and intercellular adhesion molecule-1 (ICAM-1), were determined using Western blot analysis.
RESULTS:
Histopathological observation confirmed SBE treatment alleviated morphological lesion induced by LPS. Compared with the LPS group, 480 mg/kg SBE significantly decreased the water content of lung, Evans blue accumulation in lung tissue, and protein concentration and neutrophils count in bronchoalveolar lavage fluid (P<0.01); moreover, 480 mg/kg SBE significantly suppressed release of TNF-α and IL-6, and down-regulated expressions of IKK, nuclear p65, ICAM-1 and CD62E (P<0.01).
CONCLUSION
SBE maintained alveolar-capillary barrier integrity under endotoxin challenge in mice by suppressing the key factors in the pathogenesis of ALI.
Animals
;
Mice
;
Acute Lung Injury/drug therapy*
;
Fruit/chemistry*
;
Hippophae/chemistry*
;
Intercellular Adhesion Molecule-1/metabolism*
;
Interleukin-6/metabolism*
;
Lipopolysaccharides
;
Lung/pathology*
;
NF-kappa B/metabolism*
;
Tumor Necrosis Factor-alpha/metabolism*
;
Plant Extracts/therapeutic use*
9.Study on protective effect of total flavonoids from Rosa multiflora on HUVEC induced by ox-LDL.
Dan YANG ; Jun WANG ; Kai-Yan LI
China Journal of Chinese Materia Medica 2021;46(5):1211-1216
The aim of this paper was to study the protective effect of total flavonoids from Rosa multiflora(TF-RM) on the injury of HUVEC induced by oxidized low density lipoprotein(ox-LDL). SPF male SD rats were randomly divided into blank group, simvastatin group(1.8 mg·kg~(-1)·d~(-1)) and TF-RM group(2.5 g·kg~(-1)·d~(-1)), with 10 rats in each group. They were intragastrically administered with drugs for 7 days, and then blood was collected from the abdominal aorta to prepare drug-containing serum. The HUVEC injury model was established through ox-LDL induction, and added with 15% simvastatin, 5% TF-RM, 10% TF-RM, 15% TF-RM drug-containing serum and blank serum, respectively. Reactive oxygen species(ROS) was determined by flow cytometry. Nitric oxide(NO) content was determined by nitrate reductase method. The contents of ET-1, P-selectin, E-selectin, ICAM-1, VCAM-1, IL-1β, IL-6 and TNF-α were determined by ELISA. The expression of Lox-1 protein was determined by Western blot. Compared with the blank group, ROS level in HUVEC and the contents of ET-1, P-selectin, E-selectin, ICAM-1, VCAM-1 and IL-1β in HUVEC were significantly increased(P<0.05), NO decreased significantly(P<0.01),Lox-1 protein expression increased significantly(P<0.05), and TNF-α and IL-6 showed an increasing trend. Compared with the model group, TF-RM significantly reduced ROS level in HUVEC and ET-1, P-selectin, E-selectin, ICAM-1, TNF-α, IL-1β content in supernatant(P<0.05), significantly increased NO content(P<0.01), and inhibited Lox-1 protein expression(P<0.05). VCAM-1, IL-6 contents showed a decreasing trend. Serum containing TF-RM acts on lectin-like oxidized low-density lipoprotein receptors, and exerts a protective effect on vascular endothelial cells by reducing cell oxidative damage, regulating vasoactive substances, and reducing adhesion molecules and inflammatory cascades.
Animals
;
Cells, Cultured
;
Endothelial Cells
;
Endothelium, Vascular
;
Flavonoids/pharmacology*
;
Intercellular Adhesion Molecule-1/genetics*
;
Lipoproteins, LDL
;
Male
;
Rats
;
Rats, Sprague-Dawley
;
Rosa
10.Effects of Tripterine on Adhesion Molecules and Cell Cycle in Human Acute Promyelocytic Leukemia Model Mice.
Deng-Peng SONG ; Sheng-Ying WU
Journal of Experimental Hematology 2021;29(1):72-76
OBJECTIVE:
To observe the effects of tripterine on adhesion molecules and cell biological characteristics in mice with acute promyelocytic leukemia (APL) tumor.
METHODS:
Eighteen SCID beige mice were caudal vein injected with NB4 cell lines (5×10
RESULTS:
The neutrophil decrased and promyelocytes, NB4 cells, B lymphocytes and white blood cells increased in tumor-bearing group as compared with control group (P<0.05), and the expressions of serum P-selectin (P-selectin), soluble vascular adhesion molecule-1 (soluble vascular adhesion molecule-1, sVCAM-1) and soluble intercellular adhesion molecule-1 (soluble intercellular adhesion molecule-1, sICAM-1) all increased (P<0.05). The cell cycle showed that the proportion of G
CONCLUSION
Tripterine may not only inhibit the expression of sVCAM-1 and sICAM-1 proteins in APL tumor-bearing mice and reduce the adhesion of tumor cells, but also block tumor cells at G
Animals
;
Cell Cycle
;
Cell Division
;
Humans
;
Intercellular Adhesion Molecule-1
;
Leukemia, Promyelocytic, Acute/drug therapy*
;
Mice
;
Mice, SCID
;
Triterpenes
;
Vascular Cell Adhesion Molecule-1

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