1.Genomic information mining reveals Rehmannia glutinosa growth-promoting mechanism of endophytic bacterium Kocuria rosea.
Lin-Lin WANG ; Gui-Xiao LA ; Xiu-Hong SU ; Lin-Lin YANG ; Lei-Xia CHU ; Jun-Qi GUO ; Cong-Long LIAN ; Bao ZHANG ; Cheng-Ming DONG ; Sui-Qing CHEN ; Chun-Yan WANG
China Journal of Chinese Materia Medica 2024;49(22):6119-6128
This study explored the growth-promoting effect and mechanism of the endophytic bacterium Kocuria rosea on Rehmannia glutinosa, aiming to provide a scientific basis for the development of green bacterial fertilizer. R. glutinosa 'Jinjiu' was treated with K. rosea, and the shoot parameters including leaf length, leaf width, plant width, and stem diameter were measured every 15 days. After 120 days, the shoots and roots were harvested. The root indicators(root number, root length, root diameter, root fresh weight, root dry weight, root volume, and root vitality) and secondary metabolites(catalpol, rehmannioside A, rehmannioside D, verbascoside, and leonuride) were determined. The R. glutinosa growth-promoting mechanism of K. rosea was discussed from the effect of K. rosea on the nutrient element content in R. glutinosa and rhizosphere soil and the genome information of this plant. After application of K. rosea, the maximum increases in leaf length, leaf width, plant width, and stem diameter were 35.67%(60 d), 25.39%(45 d), 40.17%(60 d), and 113.85%(45 d), respectively. The root number, root length, root diameter, root volume, root fresh weight, root dry weight, and root viability increased by 41.71%, 45.10%, 48.61%, 94.34%, 101.55%, 147.61%, and 42.08%, respectively. In addition, the content of rehmannioside A and verbascoside in the root of R. glutinosa increased by 76.67% and 69.54%, respectively. K. rosea promoted the transformation of nitrogen(N), phosphorus(P), and potassium(K) in the rhizosphere soil into the available state. Compared with that in the control, the content of available N(54.60 mg·kg~(-1)), available P(1.83 μmol·g~(-1)), and available K(83.75 mg·kg~(-1)) in the treatment with K. rosea increased by 138.78%, 44.89%, and 14.34%, respectively. The content of N, P, and K in the treatment group increased by 293.22%, 202.63%, and 23.80% in the roots and by 23.60%, 107.23%, and 134.53% in the leaves of R. glutinosa, respectively. K. rosea carried the genes related to colonization(rbsB, efp, bcsA, and gmhC), N, P, and K metabolism(narG, narH, narI, nasA, nasB, GDH2, pyk, aceB, ackA, CS, ppa, ppk, ppk2, pstS, pstA, pstB, and pstC), and indole-3-acetic acid and zeatin synthesis(iaaH and miaA). Further studies showed that K. rosea could colonize the roots of R. glutinosa and secrete indole-3-acetic acid(3.85 μg·mL~(-1)) and zeatin(0.10 μg·mL~(-1)). In summary, K. rosea promotes the growth of R.ehmannia glutinosa by enhancing the nutrient uptake, which provides a theoretical basis for the development of plant growth-promoting microbial products.
Rehmannia/metabolism*
;
Endophytes/metabolism*
;
Plant Roots/growth & development*
;
Micrococcaceae/genetics*
;
Data Mining
;
Plant Leaves/metabolism*
;
Genomics
;
Rhizosphere
2.Efficacy and Safety of Jianpi Jieyu Decoction for Patients with Mild-to-Moderate Depression of Xin (Heart)-Pi (Spleen) Deficiency Syndrome: A Multi-centre Randomized Controlled Study.
Xu CHEN ; Jiu-Xi CHEN ; Xue-Yan HAN ; Yang ZHAO ; Jing CAO ; Xiu-Zhen JIAO ; Hong-Mei LIU ; Chun-Li GUO ; Shuo MENG ; Shuai LIANG ; Jiang-Xia QI ; Dong CHEN ; Ming-Xia LI ; Yun-Xia JIAO ; Ting-Ting WANG ; Xia HONG
Chinese journal of integrative medicine 2023;29(4):299-307
OBJECTIVE:
To evaluate the efficacy and safety of Jianpi Jieyu Decoction (JJD) for treating patients with mild-to-moderate depression of Xin (Heart)-Pi (Spleen) deficiency (XPD) syndrome.
METHODS:
In this multi-center, randomized, controlled study, 140 patients with mild-to-moderate depression of XPD syndrome were included from Xiyuan Hospital of China Academy of Chinese Medical Sciences and Botou Hospital of Traditional Chinese Medicine from December 2017 to December 2019. They were randomly divided into JJD group and paroxetine group by using a random number table, with 70 cases in each group. The patients in the JJD group were given JJD one dose per day (twice daily at morning and evening, 100 mL each time), and the patients in the paroxetine group were given paroxetine (10 mg/d in week 1; 20 mg/d in weeks 2-6), both orally administration for a total of 6 weeks. The primary outcome was the change of 17-item Hamilton Depression Rating Scale (HAMD-17) score at week 6 from baseline. The secondary outcomes included the Hamilton Anxiety Scale (HAMA) score, Traditional Chinese Medicine Symptom Scale (TCMSS), and Clinlcal Global Impression (CGI) scores at the 2nd, 4th, and 6th weekends of treatment, HAMD-17 response (defined as a reduction in score of >50%) and HAMD-17 remission (defined as a score of ⩽7) at the end of the 6th week of treatment. Adverse events (AEs) were also recorded.
RESULTS:
From baseline to week 6, the HAMD-17 scores decreased 10.2 ± 4.0 and 9.1 ± 4.9 points in the JJD and paroxetine groups, respectively (P=0.689). The HAMD-17 response occurred in 60% of patients in the JJD group and in 50% of those in the paroxetine group (P=0.292); HAMD-17 remission occurred in 45.7% and 30% of patients, respectively (P=0.128). The differences of CGI scores at the 6th week were not statistically significant (P>0.05). There were significant differences in HAMD-17 scores between the two groups at 2nd and 4th week (P=0.001 and P=0.014). The HAMA scores declined 8.1 ± 3.0 and 6.9 ± 4.3 points from baseline to week 6 in the JJD and paroxetine groups, respectively (P=0.905 between groups). At 4th week of treatment, there was a significant difference in HAMA between the two groups (P=0.037). TCMSS decreased 11.4 ± 5.1, and 10.1 ± 6.8 points in the JJD and paroxetine groups, respectively (P=0.080 between groups). At the 6th week, the incidence of AEs in the JJD group was significantly lower than that in the paroxetine group (7.14% vs. 22.86%, P<0.05).
CONCLUSION
Compared with paroxetine, JJD was associated with a significantly lower incidence of AEs in patients with mild-to-moderate depression of XPD syndrome, with no difference in efficacy at 6 weeks. (Trial registration No. ChiCTR2000040922).
Humans
;
Paroxetine/adverse effects*
;
Spleen
;
Anxiety
;
Syndrome
;
Medicine, Chinese Traditional
;
Treatment Outcome
;
Double-Blind Method
3.Application of preoperative serum CYFRA 21-1 level in the prognosis of colorectal cancer.
Wen Qi HU ; Hui CONG ; Rong Hua FANG ; Wen Tao YUAN ; Chun Yan MAO ; Jie Rong WANG ; Ying WANG ; Xiu Ying SHI
Chinese Journal of Preventive Medicine 2023;57(10):1613-1619
To explore the predictive value of preoperative serum CYFRA 21-1 in colorectal cancer (CRC) resection patients. In this retrospective study, 456 patients with CRC who received surgical treatment in the Department of General Surgery, Affiliated Hospital of Nantong University from January 2016 to February 2018 were analyzed. Preoperative CYFRA 21-1, CEA, CA19-9 and pathological data of the study subjects were collected. Determine the cut-off value of CYFRA 21-1 based on the X-tile. Chi-square test or Fisher exact probability test were used to compare clinicopathological features in different CYFRA 21-1 level groups. Univariate and multivariate regression analysis of factors affecting 5-year overall survival (OS) and disease-free survival (DFS). Kaplan-Meier survival curves were used to analyze 5-year differences in OS and DFS in CRC patients with different levels of CYFRA 21-1, CEA and CA19-9. Receiver operating characteristic(ROC) was adopted. ROC curves were used to analyze the prognostic efficacy of CYFRA21-1 for CRC, and nomogram maps were used to predict 1, 3, and 5-year survival rates. The results showed that the optimal cut-off values of serum CYFRA 21-1, CEA and CA19-9 were 4.9 ng/ml, 29.2 ng/ml and 72.8 U/ml, respectively. Different gender, tumor size, location, degree of differentiation, depth of invasion, lymph node metastasis and tumor node metastasis (TNM) classification stage were significantly different between the two groups with high and low CYFRA 21-1, the P-values were 0.018,<0.001,<0.001,<0.001, 0.002, 0.001, 0.003, respectively. CYFRA 21-1 (≥4.9 ng/ml) was an independent risk factor for 5-year OS (HR: 4.008, 95%CI: 2.309-6.958, P<0.001) and DFS (HR: 3.75, 95%CI: 2.227-6.314, P<0.001) in CRC patients. CYFRA 21-1 predicts a 5-year AUC of 0.725 and 0.720 for OS and DFS, respectively, and 0.804 and 0.827 for the combination of CEA and CA19-9. Based on the results of multivariate Cox regression analysis, nomogram graphs of OS and DFS were established, the C-indexes were 0.799 and 0.803, respectively. In conclusion, preoperative serum CYFRA 21-1 level may be an independent risk factor affecting the prognosis of patients with colorectal cancer. The prognostic model established by CYFRA 21-1 combined with CEA, CA19-9 and TNM stages may provide references for the prevention of CRC recurrence and clinical decision-making.
Humans
;
Colorectal Neoplasms/pathology*
;
CA-19-9 Antigen
;
Retrospective Studies
;
Neoplasm Staging
;
Neoplasm Recurrence, Local/pathology*
;
Biomarkers, Tumor
4.Application of preoperative serum CYFRA 21-1 level in the prognosis of colorectal cancer.
Wen Qi HU ; Hui CONG ; Rong Hua FANG ; Wen Tao YUAN ; Chun Yan MAO ; Jie Rong WANG ; Ying WANG ; Xiu Ying SHI
Chinese Journal of Preventive Medicine 2023;57(10):1613-1619
To explore the predictive value of preoperative serum CYFRA 21-1 in colorectal cancer (CRC) resection patients. In this retrospective study, 456 patients with CRC who received surgical treatment in the Department of General Surgery, Affiliated Hospital of Nantong University from January 2016 to February 2018 were analyzed. Preoperative CYFRA 21-1, CEA, CA19-9 and pathological data of the study subjects were collected. Determine the cut-off value of CYFRA 21-1 based on the X-tile. Chi-square test or Fisher exact probability test were used to compare clinicopathological features in different CYFRA 21-1 level groups. Univariate and multivariate regression analysis of factors affecting 5-year overall survival (OS) and disease-free survival (DFS). Kaplan-Meier survival curves were used to analyze 5-year differences in OS and DFS in CRC patients with different levels of CYFRA 21-1, CEA and CA19-9. Receiver operating characteristic(ROC) was adopted. ROC curves were used to analyze the prognostic efficacy of CYFRA21-1 for CRC, and nomogram maps were used to predict 1, 3, and 5-year survival rates. The results showed that the optimal cut-off values of serum CYFRA 21-1, CEA and CA19-9 were 4.9 ng/ml, 29.2 ng/ml and 72.8 U/ml, respectively. Different gender, tumor size, location, degree of differentiation, depth of invasion, lymph node metastasis and tumor node metastasis (TNM) classification stage were significantly different between the two groups with high and low CYFRA 21-1, the P-values were 0.018,<0.001,<0.001,<0.001, 0.002, 0.001, 0.003, respectively. CYFRA 21-1 (≥4.9 ng/ml) was an independent risk factor for 5-year OS (HR: 4.008, 95%CI: 2.309-6.958, P<0.001) and DFS (HR: 3.75, 95%CI: 2.227-6.314, P<0.001) in CRC patients. CYFRA 21-1 predicts a 5-year AUC of 0.725 and 0.720 for OS and DFS, respectively, and 0.804 and 0.827 for the combination of CEA and CA19-9. Based on the results of multivariate Cox regression analysis, nomogram graphs of OS and DFS were established, the C-indexes were 0.799 and 0.803, respectively. In conclusion, preoperative serum CYFRA 21-1 level may be an independent risk factor affecting the prognosis of patients with colorectal cancer. The prognostic model established by CYFRA 21-1 combined with CEA, CA19-9 and TNM stages may provide references for the prevention of CRC recurrence and clinical decision-making.
Humans
;
Colorectal Neoplasms/pathology*
;
CA-19-9 Antigen
;
Retrospective Studies
;
Neoplasm Staging
;
Neoplasm Recurrence, Local/pathology*
;
Biomarkers, Tumor
5.EPOSTER • DRUG DISCOVERY AND DEVELOPMENT
Marwan Ibrahim ; Olivier D LaFlamme ; Turgay Akay ; Julia Barczuk ; Wioletta Rozpedek-Kaminska ; Grzegorz Galita ; Natalia Siwecka ; Ireneusz Majsterek ; Sharmni Vishnu K. ; Thin Thin Wi ; Saint Nway Aye ; Arun Kumar ; Grace Devadason ; Fatin Aqilah Binti Ishak ; Goh Jia Shen ; Dhaniya A/P Subramaniam ; Hiew Ke Wei ; Hong Yan Ren ; Sivalingam Nalliah ; Nikitha Lalindri Mareena Senaratne ; Chong Chun Wie ; Divya Gopinath ; Pang Yi Xuan ; Mohamed Ismath Fathima Fahumida ; Muhammad Imran Bin Al Nazir Hussain ; Nethmi Thathsarani Jayathilake ; Sujata Khobragade ; Htoo Htoo Kyaw Soe ; Soe Moe ; Mila Nu Nu Htay ; Rosamund Koo ; Tan Wai Yee ; Wong Zi Qin ; Lau Kai Yee ; Ali Haider Mohammed ; Ali Blebil ; Juman Dujaili ; Alicia Yu Tian Tan ; Cheryl Yan Yen Ng ; Ching Xin Ni ; Michelle Ng Yeen Tan ; Kokila A/P Thiagarajah ; Justin Jing Cherg Chong ; Yong Khai Pang ; Pei Wern Hue ; Raksaini Sivasubramaniam ; Fathimath Hadhima ; Jun Jean Ong ; Matthew Joseph Manavalan ; Reyna Rehan ; Tularama Naidu ; Hansi Amarasinghe ; Minosh Kumar ; Sdney Jia Eer Tew ; Yee Sin Chong ; Yi Ting Sim ; Qi Xuan Ng ; Wei Jin Wong ; Shaun Wen Huey Lee ; Ronald Fook Seng Lee ; Wei Ni Tay ; Yi Tan ; Wai Yew Yang ; Shu Hwa Ong ; Yee Siew Lim ; Siddique Abu Nowajish ; Zobaidul Amin ; Umajeyam Anbarasan ; Lim Kean Ghee ; John Pinto ; Quek Jia Hui ; Ching Xiu Wei ; Dominic Lim Tao Ran ; Philip George ; Chandramani Thuraisingham ; Tan Kok Joon ; Wong Zhi Hang ; Freya Tang Sin Wei ; Ho Ket Li ; Shu Shuen Yee ; Goon Month Lim ; Wen Tien Tan ; Sin Wei Tang
International e-Journal of Science, Medicine and Education 2022;16(Suppl1):21-37
6.Construction of a nomogram prediction model for pathological complete response (pCR) of ipsilateral supraclavicular lymph node after neoadjuvant chemotherapy for breast cancer with first diagnosis of ipsilateral supraclavicular lymph node metastasis.
Min Hao LYU ; De Chuang JIAO ; Jun Zhao WU ; Pei Qi TIAN ; You Zhao MA ; Zhen Zhen LIU ; Xiu Chun CHEN
Chinese Journal of Oncology 2022;44(2):160-166
Objective: To develop a predictive model for pathologic complete response (pCR) of ipsilateral supraclavicular lymph nodes (ISLN) after neoadjuvant chemotherapy for breast cancer and guide the local treatment. Methods: Two hundred and eleven consecutive breast cancer patients with first diagnosis of ipsilateral supraclavicular lymph node metastasis who underwent ipsilateral supraclavicular lymph node dissection and treated in the Breast Department of Henan Cancer Hospital from September 2012 to May 2019 were included. One hundred and forty two cases were divided into the training set while other 69 cases into the validation set. The factors affecting ipsilateral supraclavicular lymph node pCR (ispCR)of breast cancer after neoadjuvant chemotherapy were analyzed by univariate and multivariate logistic regression analyses, and a nomogram prediction model of ispCR was established. Internal and external validation evaluation of the nomogram prediction model were conducted by receiver operating characteristic (ROC) curve analysis and plotting calibration curves. Results: Univariate logistic regression analysis showed that Ki-67 index, number of axillary lymph node metastases, breast pCR, axillary pCR, and ISLN size after neoadjuvant chemotherapy were associated with ispCR of breast cancerafter neoadjuvant chemotherapy (P<0.05). Multivariate logistic regression analysis showed that the number of axillary lymph node metastases (OR=5.035, 95%CI: 1.722-14.721, P=0.003), breast pCR (OR=4.662, 95%CI: 1.456-14.922, P=0.010) and ISLN size after neoadjuvant chemotherapy (OR=4.231, 95%CI: 1.194-14.985, P=0.025) were independent predictors of ispCR of breast cancer after neoadjuvant chemotherapy. A nomogram prediction model of ispCR of breast cancer after neoadjuvant chemotherapy was constructed using five factors: number of axillary lymph node metastases, Ki-67 index, breast pCR, axillary pCR and size of ISLN after neoadjuvant chemotherapy. The areas under the ROC curve for the nomogram prediction model in the training and validation sets were 0.855 and 0.838, respectively, and the difference was not statistically significant (P=0.755). The 3-year disease-free survival rates of patients in the ispCR and non-ispCR groups after neoadjuvant chemotherapy were 64.3% and 54.8%, respectively, with statistically significant differences (P=0.024), the 3-year overall survival rates were 83.8% and 70.2%, respectively, without statistically significant difference (P=0.087). Conclusions: Disease free survival is significantly improved in breast cancer patients with ispCR after neoadjuvant chemotherapy. The constructed nomogram prediction model of ispCR of breast cancer patients after neoadjuvant chemotherapy is well fitted. Application of this prediction model can assist the development of local management strategies for the ipsilateral supraclavicular region after neoadjuvant chemotherapy and predict the long-term prognosis of breast cancer patients.
Axilla/pathology*
;
Breast Neoplasms/pathology*
;
Female
;
Humans
;
Lymph Node Excision
;
Lymph Nodes/pathology*
;
Lymphatic Metastasis/pathology*
;
Neoadjuvant Therapy
;
Nomograms
;
Retrospective Studies
7.Analysis of factors associated with the structure of the gut microbial community in HIV/AIDS patients in some areas of Henan province.
Jia LIU ; Jie GENG ; Jia Qi LIU ; Xiu Juan XUE ; Jiang Zhou YAN ; Yuan YUAN ; Xiang Bing ZHANG ; Chun Hua LIU ; Guo Long ZHANG
Chinese Journal of Epidemiology 2022;43(4):566-571
Objective: To investigate the related factors associated with the structure of the gut microbial community in HIV infection/AIDS cases (HIV/AIDS) in Henan province. Methods: The convenience sampling method was used to select 122 cases who were receiving Antiviral Treatment (ART) or ART-naive in Henan. Whole blood and stool specimens were collected. Genomic DNA of stool samples was extracted, and the V3-V4 hypervariable regions of the 16S rRNA gene were sequenced using Illumina NovaSeq 6000 high-throughput sequencing system. The analysis was performed mainly at the genus level, and the 30 genera with the highest abundance were selected as a measure of the gut microbial community structure. The correlation between community structure and related factors was analyzed using redundancy analysis and Envfit function. Results: 122 cases were finally completed sequencing and analysis, the average BMI was (23.62±2.78) kg/m2 and the average age was (47±13) years. Among them, male accounted for 66.39% (81/122), and heterosexual transmission route constituted the largest ratio, accounting for 51.64% (63/122). 36 cases were treatment naive (29.51%, 36/122). The top five dominant genera of the total population (122 cases) were Prevotella, Roseburia, Megamonas, Bacteroides and Faecalibacterium and the top five dominant genera of the ART population (86 cases) were Prevotella, Megamonas, Bacteroides, Roseburia and Faecalibacterium. The top five dominant genera of the ART-naive population (36 cases) appeared as Prevotella, Faecalibacterium, Roseburia, Bacteroides and Megamonas. In the total population, ART (P<0.001) was the most significant factors of community structure. Other significant factors were: duration of diagnosis (P=0.009), viral load (P=0.022) and anti-HCV (P=0.018). ART was positively correlated with Megamonas and negatively correlated with Prevotella, Roseburia and Faecalibacterium, while the other three factors of duration of diagnosis, viral load and anti-HCV were positively correlated with Prevotella, Roseburia and Faecalibacterium and negatively correlated with Megamonas. In the ART-naive population, duration of diagnosis (P=0.003) were the factors significantly associated with community structure. Duration of diagnosis was positively correlated with Roseburia, Faecalibacterium, Megamonas and Prevotella and negatively correlated with Bacteroides. Conclusion: ART and duration of diagnosis were factors significantly associated with gut microbial community structure and had a significant impact on multiple high-abundance genera.
Acquired Immunodeficiency Syndrome/epidemiology*
;
Adult
;
Gastrointestinal Microbiome/genetics*
;
HIV Infections/epidemiology*
;
Humans
;
Male
;
Microbiota
;
Middle Aged
;
RNA, Ribosomal, 16S/genetics*
8.Kang-Ai Injection Inhibits Gastric Cancer Cells Proliferation through IL-6/STAT3 Pathway.
Chun-Lei ZHENG ; Ke-Zuo HOU ; An-Qi WANG ; Wan-Xia FANG ; Shi-Tong YU ; Jin-E LIANG ; Hai-Yan QI ; Xiu-Juan QU ; Yun-Peng LIU ; Xiao-Fang CHE
Chinese journal of integrative medicine 2022;28(6):524-530
OBJECTIVE:
To explore the mechanisms underlying the proliferative inhibition of Chinese herbal medicine Kang-Ai injection (KAI) in gastric cancer cells.
METHODS:
Gastric cancer cell lines MGC803 and BGC823 were treated by 0, 0.3%, 1%, 3% and 10% KAI for 24, 48 and 72 h, respectively. The cell proliferation was evaluated by 3-(4,5-dimethyl-2-thiazolyl)-2,5-diphenyl-2-H-tetrazolium bromide (MTT) assay. The apoptosis and cell cycle were evaluated by flow cytometry. Interleukin (IL)-6 mRNA and protein expression levels were detected by quantitative real-time polymerase chain reaction (qRT-PCR) and enzyme-linked immune sorbent assay (ELISA), respectively. The protein expression levels of cyclin A, cyclin E, cyclin B1, cyclin D1, p21, retinoblastoma (RB), protein kinase B (AKT), extracellular regulated protein kinases (ERK), signal transducer and activator of transcription (STAT) 1 and STAT3 were detected by Western blot.
RESULTS:
KAI inhibited the proliferation of MGC803 and BGC823 gastric cancer cells in dose- and time-dependent manner. After treated with KAI for 48 h, the proportion of G1 phase was increased, expression level of cyclin D1 and phosphorylation-RB were down-regulated, whereas the expression of p21 was up-regulated (all P<0.01). Furthermore, 48-h treatment with KAI decreased the phosphorylation level of STAT3, inhibited the mRNA and protein expressions of IL-6 (all P<0.01). IL-6 at dose of 10 ng/mL significantly attenuated the proliferative effect of both 3% and 10% KAI, and recovered KAI-inhibited STAT3 phosphorylation and cyclin D1 expression level (all P<0.01).
CONCLUSION
KAI exerted an anti-proliferative function by inhibiting IL-6/STAT3 signaling pathway followed by the induction of G1 phase arrest in gastric cancer cells.
Apoptosis
;
Cell Line, Tumor
;
Cell Proliferation
;
Cyclin D1/pharmacology*
;
Humans
;
Interleukin-6/metabolism*
;
RNA, Messenger/metabolism*
;
STAT3 Transcription Factor/metabolism*
;
Stomach Neoplasms/genetics*
9. Role of zinc finger protein 36, C3H type-like 1 mediating astrocytes activation in motor neuron degeneration in amyotrophic lateral sclerosis
Kang DING ; Feng-Ping ZHANG ; Gao-Xiu QI ; Meng LIN ; Min CHEN ; Zhang-Yu GUO ; Feng-Hua ZHOU ; Gao-Xiu QI ; Min CHEN ; Yan-Chun CHEN ; Ying-Jun GUAN ; Kang DING ; Feng-Ping ZHANG ; Meng LIN ; Yan-Chun CHEN ; Zhang-Yu GUO ; Feng-Hua ZHOU ; Ying-Jun GUAN
Acta Anatomica Sinica 2022;53(3):273-280
Objective To investigate the role of zinc finger protein 36,C3H type-like 1 (ZFP36L1) mediating astrocytes activation in the degeneration of motor neurons in amyotrophic lateral sclerosis (ALS). Methods Superoxide dismutase 1 (S0D1)-G93A transgenic mice were used as animal models, the wild-type littermates as the control (13 mice were taken from mutant and wild-type mice at each time point) . The ZFP36L1 mRNA and protein levels of the spinal cord in the early, middle and late stage were detected by Real-time PGR and Western blotting. The expression and distribution of ZFP36L1 in the spinal cord were detected by immunofluorescence. Primary astrocyte model was established from 15 postnatal 1-2 day mice. The ZFP36L1 mRNA and protein levels in astrocytes were detected by Real-time PCR and Western blotting. Si-ZFP36L1 was transfected into SOD1-G93A mutant primary astrocytes. The transfection efficiency was detected by Western blotting. Tumor necrosis factor a (TNF-a) and interleukin-18 (IL-18) secreted from astrocytes after transfection were assessed by Western blotting and ELISA. After silencing ZFP36L1 in SOD1-G93A mutant primary astrocytes, it was cocultured with SOD1-G93A mutant NSC34 cells. 5 ' -ethynyl-2' deoxyuridine (EdU) test and the level of proliferating cell nuclear antigen (PCNA) were used to determine the effect of ZFP36L1 on NSC34 cell proliferation. TUNEL test and the level of cleaved-Caspase-3 were used to determine the effect of ZFP36L1 on NSC34 cell apoptosis. Blank small interfering RNA(siRNA) was transfected as the control group. Results Compared with the wild-type mice, the mRNA and protein levels of ZFP36L1 were downregulated in the spinal cord of SOD1-G93A transgenic mice. In wild type mice, ZFP36L1 positive cells were mainly [^-tubulin IE positive. In SOD1-G93A mutant mice, ZFP36L1 positive cells were mainly glial fibrillary acidic protein (GFAP) positive. The expression of ZFP36L1 in SOD1-G93A mutant primary astrocytes increased, and si-ZFP36Ll reduced the level of ZFP36L1 in SOD1-G93A mutant primary astrocytes significantly. Inflammatory factors including TNF-a, IL-18 decreased significantly after silencing ZFP36L1. In addition, after silencing ZFP36L1 expression, SOD1-G93A mutant primary astrocytes enhanced the proliferation activity of NSC34 cells and inhibited NSC34 cell apoptosis significantly. Conclusion Astrocytes are activated in the process of ALS. ZFP36L1 promotes the degeneration of motor neurons in ALS through the inflammatory factors secreted by astrocytes.
10.Role of hyperglycemia-induced 5-hydroxytryptamine degradation of hepatic stellate cells in hepatic inflammation and fibrosis induced by type 2 diabetes mellitus.
Xiu Rui LIANG ; Xue Chun SHAN ; Jing GUAN ; Rui ZHANG ; Jing YANG ; Yi ZHANG ; Jia Qi JIN ; Yu Xin ZHANG ; Fan XU ; Ji Hua FU
Journal of Peking University(Health Sciences) 2022;54(6):1141-1150
OBJECTIVE:
To explore the role of 5-hydroxytryptamine (5-HT) in type 2 diabetes mellitus (T2DM)-related hepatic inflammation and fibrosis.
METHODS:
Male C57BL/6J mice were used to establish T2DM model by high-fat diet feeding combined with intraperitoneal injection of streptozotocin. Then, the mice with hyperglycemia were still fed with high-fat diet for nine weeks, and treated with or without 5-HT2A receptor (5-HT2AR) antagonist sarpogrelate hydrochloride (SH) and 5-HT synthesis inhibitor carbidopa (CDP) (alone or in combination). To observe the role of 5-HT in the myofibroblastization of hepa-tic stellate cells (HSCs), human HSCs LX-2 were exposed to high glucose, and were treated with or without SH, CDP or monoamine oxidase A (MAO-A) inhibitor clorgiline (CGL). Hematoxylin & eosin and Masson staining were used to detect the pathological lesions of liver tissue section, immunohistochemistry and Western blot were used to analyze protein expression, biochemical indicators were measured by ELISA or enzyme kits, and levels of intracellular reactive oxygen species (ROS) were detected by fluorescent probe.
RESULTS:
There were up-regulated expressions of 5-HT2AR, 5-HT synthases and MAO-A, and elevated levels of 5-HT in the liver of the T2DM mice. In addition to reduction of the hepatic 5-HT levels and MAO-A expression, treatment with SH and CDP could effectively ameliorate liver lesions in the T2DM mice, both of which could ameliorate hepatic injury and steatosis, significantly inhibit the increase of hepatic ROS (H2O2) levels to alleviate oxidative stress, and markedly suppress the production of transforming growth factor β1 (TGF-β1) and the development of inflammation and fibrosis in liver. More importantly, there was a synergistic effect between SH and CDP. Studies on LX-2 cells showed that high glucose could induce up-regulation of 5-HT2AR, 5-HT synthases and MAO-A expression, increase intracellular 5-HT level, increase the production of ROS, and lead to myofibroblastization of LX-2, resulting in the increase of TGF-β1 synthesis and production of inflammatory and fibrosis factors. The effects of high glucose could be significantly inhibited by 5-HT2AR antagonist SH or be markedly abolished by mitochondrial 5-HT degradation inhibitor CGL. In addition, SH significantly suppressed the up-regulation of 5-HT synthases and MAO-A induced by high glucose in LX-2.
CONCLUSION
Hyperglycemia-induced myofibroblastization and TGF-β1 production of HSCs, which leads to hepatic inflammation and fibrosis in T2DM mice, is probably due to the up-regulation of 5-HT2AR expression and increase of 5-HT synthesis and degradation, resulting in the increase of ROS production in mitochondria. Among them, 5-HT2AR is involved in the regulation of 5-HT synthases and MAO-A expression.
Male
;
Mice
;
Humans
;
Animals
;
Hepatic Stellate Cells/pathology*
;
Transforming Growth Factor beta1/pharmacology*
;
Serotonin/metabolism*
;
Reactive Oxygen Species/metabolism*
;
Diabetes Mellitus, Type 2/complications*
;
Hydrogen Peroxide/metabolism*
;
Mice, Inbred C57BL
;
Liver Cirrhosis/etiology*
;
Hyperglycemia/pathology*
;
Monoamine Oxidase/metabolism*
;
Inflammation
;
Glucose/metabolism*
;
Cytidine Diphosphate/pharmacology*


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