1.Association between improved erectile function and dietary patterns: a systematic review and meta-analysis.
Bin YANG ; Chao WEI ; Yu-Cong ZHANG ; De-Lin MA ; Jian BAI ; Zhuo LIU ; Xia-Ming LIU ; Ji-Hong LIU ; Xiao-Yi YUAN ; Wei-Min YAO
Asian Journal of Andrology 2025;27(2):239-244
Erectile dysfunction (ED) is prevalent among men, but its relationship with dietary habits is uncertain. The aim of our study was to assess whether dietary patterns enhance erectile function by reviewing the literature published before August 1, 2022, via PubMed, Web of Science, and EMBASE databases. The data compiled included author details; publication dates, countries, treatments, patient numbers, ages, follow-ups, and clinical trial outcomes, such as ED cases, odds ratios (ORs), confidence intervals (CIs), and International Index of Erectile Function-5 (IIEF-5) scores with means and standard deviations. An analysis of 14 studies with 27 389 participants revealed that plant-based diets (OR = 0.71, 95% CI: 0.66-0.75; P < 0.00001), low-fat diets (OR = 0.27, 95% CI: 0.13-0.53; P = 0.0002), and alternative diets such as intermittent fasting and organic diets (OR = 0.54, 95% CI: 0.36-0.80; P = 0.002) significantly reduced ED risk. High-protein low-fat diets (hazard ratio [HR] = 1.38, 95% CI: 1.12-1.64; P < 0.00001) and high-carb low-fat diets (HR = 0.79, 95% CI: 0.55-1.04; P < 0.00001) improved IIEF-5 scores. Combined diet and exercise interventions decreased the likelihood of ED (OR = 0.49, 95% CI: 0.28-0.85; P = 0.01) and increased the IIEF-5 score (OR = 3.40, 95% CI: 1.69-5.11; P < 0.0001). Diets abundant in fruits and vegetables (OR = 0.97, 95% CI: 0.96-0.98; P < 0.00001) and nuts (OR = 0.54, 95% CI: 0.37-0.80; P = 0.002) were also correlated with lower ED risk. Our meta-analysis underscores a strong dietary-ED association, suggesting that low-fat/Mediterranean diets rich in produce and nuts could benefit ED management.
Humans
;
Male
;
Erectile Dysfunction/epidemiology*
;
Diet
;
Diet, Fat-Restricted
;
Feeding Behavior
;
Penile Erection/physiology*
;
Diet, Vegetarian
2.Prognostic Value of Plasma Fibrinogen Levels in Patients with Diffuse Large B-Cell Lymphoma.
Bing ZHANG ; Lin LIN ; Jian-Min JI ; Yu WU ; Qun SHEN
Journal of Experimental Hematology 2025;33(1):114-120
OBJECTIVE:
To assess the prognostic significance of plasma fibrinogen(FIB) levels in patients of diffuse large B-cell lymphoma(DLBCL).
METHODS:
We retrospectively analyzed 203 newly diagnosed with DLBCL patients who met the study requirements from November 2016 to May 2024. Based on the receiver operating characteristic (ROC) curve analysis of plasma FIB levels during diagnosis, the critical value of FIB was determined, and patients were divided into high FIB and low FIB groups. The clinical characteristics and relevant laboratory indicators of two groups were compared. The impact of plasma FIB levels on overall survival (OS) were evaluated using Kaplan-Meier curves as well as univariate and multivariate Cox regression analysis. The differences in FIB and other laboratory indicators under different disease states were compared.
RESULTS:
According to the ROC curve, the optimal cut-off value of FIB was 3.49 g/L. Compared with the high FIB group (>3.49 g/L), the low FIB group (≤3.49 g/L) had a significant decrease in neutrophil count (ANC) (P =0.001) and platelet count (PLT) (P =0.027), and a significant increase in prealbumin (PA) (P =0.001). A high FIB level was associated with decreased OS (P =0.005). Univariate analysis results showed that FIB had an impact on survival of patients(HR=2.031,95%CI : 1.221-3.375, P =0.006). Multivariate analysis showed that higher FIB level was an independent adverse prognostic factor affecting patients survival (HR=2.684, 95%CI :1.478-4.875, P =0.001). Compared with patients with newly diagnosed or recurrent DLBCL, patients with complete remission showed a significant decrease in FIB (P ND < 0.001, P R=0.001) and ANC (P ND < 0.001, P R=0.021), as well as an increase in albumin (ALB) (P ND < 0.001, P R=0.018) and PA (P ND < 0.001, P R < 0.001).
CONCLUSION
Elevated FIB is a poor prognostic factor for DLBCL patients. The plasma FIB level is correlated with laboratory indicators such as ANC, PLT, PA, and disease status in DLBCL patients. Dynamic monitoring can assist in the early detection of changes in the condition.
Humans
;
Lymphoma, Large B-Cell, Diffuse/diagnosis*
;
Fibrinogen/metabolism*
;
Prognosis
;
Retrospective Studies
;
Male
;
Female
;
ROC Curve
;
Middle Aged
;
Aged
;
Adult
3.Establishment and Mechanistic Study of Venetoclax-Resistant Cell Lines in Acute Myeloid Leukemia.
Kai-Fan LIU ; Ling-Ji ZENG ; Su-Xia GENG ; Xin HUANG ; Min-Ming LI ; Pei-Long LAI ; Jian-Yu WENG ; Xin DU
Journal of Experimental Hematology 2025;33(4):986-997
OBJECTIVE:
To establish venetoclax-resistant acute myeloid leukemia (AML) cell lines, assess the sensitivity of venetoclax-resistant cell lines to the BCL-2 protein family, and investigate their resistance mechanisms.
METHODS:
CCK-8 method was used to screen AML cell lines (MV4-11, MOLM13, OCI-AML2) that were relatively sensitive to venetoclax. Low concentrations of venetoclax continuously induced drug-resistance development in the cell lines. Changes in cell viability and apoptosis rate before and after resistance development were measured using the CCK-8 method and flow cytometry. BH3 profiling assay was performed to anayze the transform of mitochondrion-dependent apoptosis pathway as well as the sensitivity of resistant cell lines to BCL-2 family proteins and small molecule inhibitors. Real-time fluorescence quantitative PCR (RT-qPCR) was utilized to examine changes in the expression levels of BCL-2 protein family members in both venetoclax-resistant cell lines and multidrug-resistant patients.
RESULTS:
Venetoclax-resistant cell lines of MV4-11, MOLM13, and OCI-AML2 were successfully established, with IC50 values exceeding 10-fold. Under the same concentration of venetoclax, the apoptosis rate of resistant cells decreased significantly (P < 0.05). BH3 profiling assay revealed that the drug-resistant cell lines showed increased sensitivity to many pro-apoptotic proteins (such as BIM,BID and NOXA). RT-qPCR showed significantly upregulated MCL1 and downregulated NOXA1 were detected in drug-resistant cell lines. Expression changes in MCL1 and NOXA1 in venetoclax-resistant patients were consistent with our established drug-resistant cell line results.
CONCLUSION
The venetoclax-resistant AML cell lines were successfully established through continuous induction with low concentrations of venetoclax. The venetoclax resistance resulted in alterations in the mitochondrial apoptosis pathway of the cells and an increased sensitivity of cells to pro-apoptotic proteins BIM, BID, and NOXA, which may be associated with the upregulation of MCL1 expression and downregulation of NOXA1 expression in the drug-resistant cells.
Humans
;
Sulfonamides/pharmacology*
;
Drug Resistance, Neoplasm
;
Bridged Bicyclo Compounds, Heterocyclic/pharmacology*
;
Leukemia, Myeloid, Acute/pathology*
;
Proto-Oncogene Proteins c-bcl-2/metabolism*
;
Cell Line, Tumor
;
Apoptosis
;
Antineoplastic Agents/pharmacology*
4.Comparison of open reduction hollow nail anchoring system with loop plate fixation under arthroscopy for the treat-ment of posterior cruciate ligament avulsion fractures
Rong WU ; Zhan-Feng ZHANG ; Wei WENG ; Hong-Hang YANG ; Ji-Kang MIN ; Jian-Wei SUN ; Zhe-Yuan SHEN
China Journal of Orthopaedics and Traumatology 2024;37(6):583-590
Objective To compare clinical effect between open reduction and fixation with cannulated screw and threaded rivet via posteromedial approach versus arthroscopic Endobutton plate fixation in treating posterior cruciate ligament avulsion fractures.Methods Clinical data of 38 patients with posterior cruciate ligament avulsion fractures from July 2020 to December 2021 were analyzed retrospectively,and divided into open reduction and internal fixation group(posterior medial approach hollow anchor system fixation)and arthroscopic fixation group(Endobutton with loop plate fixation under arthroscopy).There were 20 patients in open reduction and internal fixation group,including 16 males and 4 females,aged from 26 to 74 years old with an average of(42.9±18.8)years old;13 patients on the left side and 7 patients on the right side;12 patients were classi-fied to type Ⅱ and 8 patiens with type Ⅲ according to Meyers-McKeever fractures classification;14 patients were grade Ⅱ and 6 patients were grade Ⅲ in back drawer test.There were 18 patients in arthroscopic fixation group,including 11 males and 7 fe-males;aged from 24 to 70 years old with an average of(53.5±13.4)years old;11 patients on the left side and 7 patients on the right side;10 patients were classified to type Ⅱ and 8 patiens with type Ⅲ according to Meyers-McKeever fractures classifica-tion;11 patients were grade Ⅱ and 7 patients were grade Ⅲ in back drawer test.Operation time,blood loss,and quality of im-mediate reduction were compared between two groups.Knee range of motion,knee back drawer test,and International Knee Documentation Committee(IKDC)grading,KT2000 stability evaluation and Lysholm function score of knee joint were com-pared at 6 months after operation.Results All patients were followed up for 8 to 16 months with an average of(12.3±1.9)months.There were no complications such as incision infection,fracture malunion or non-union,and internal fixation loosening occurred.The avulsion fractures of knee joint were reached to imaging healing standard at 6 months after operation.Operation time and blood loss in open reduction and internal fixation group were(56.4±7.1)min and(63.2±10.2)ml,while(89.9±7.4)min and(27.7±8.7)ml in arthroscopic fixation group,respectively,and had significant difference between two groups(P<0.05).There were no differences in immediate reduction quality(x2=0.257,P=0.612),knee joint range of motion at 6 months after opertaion(t=0.492,P=0.626),knee joint rear drawer test(x2=0.320,P=0.572),IKDC classification of knee joint(x2=0.127,P=0.938),KT2000stability evaluation(x2=0.070,P=0.791),and knee Lysholmfunction score(t=0.092,P=0.282)between two groups.Conclusion Posterior medial approach with hollow anchoring system fixation and arthroscopic Endobutton with loop plate fixa-tion for the treatment of posterior cruciate ligament tibial occlusion avulsion fracture could achieve satisfactory clinical results,and arthroscopic surgery has less bleeding,but also has a longer learning curve and longer operation time than traditional inci-sion surgery.The surgeon needs to make a choice according to clinical situation of patient and their own surgical inclination.
5.Electrophysiological technique for treatment of chronic prostatiti:Curative effect observation
Song WANG ; Jian-Xin HU ; Shan WANG ; Chao PENG ; Ji CAI ; Min DING
National Journal of Andrology 2024;30(7):611-615
Objective:To observe the clinical effect of electrophysiological technique in treating chronic prostatitis.Meth-ods:Choose 40 patients of chronic prostatitis/chronic pelvic pain syndrome(chronicprostatis/chronicpelvicpainsyndrome,CP/CPPS)in People's Hospital in Zhijin and People's hospital in Guizhou Province from January 2022 to April 2023,The patients were randomly divided into control group(n=20)and treatment group(n=20).The treatment group received low-frequency neuromuscular electri-cal stimulation combined with drug therapy,while the control group received drug therapy alone.The improvement of prostatitis symp-tom score(NIH-CPSI)and International Prostatitis Symptom score(IPSS)before and after treatment was compared and analyzed.Results:A total of 37 patients were followed up(1 patient in the treatment group withdrew due to hypersensitivity to the electrode;2 patients in the control group were lost to follow-up.)There was no significant difference in baseline data between the two groups(P>0.05).The NIH-CPSI score and IPSS score before and after treatment were compared between the two groups,and the difference was statistically significant(P<0.05).The IPSS score of the two groups after treatment was compared,the average reduction of the treat-ment group was15.84±0.92 points,and that of the control group was7.17±0.40 points,and the difference was statistically signifi-cant(t=4.792,P<0.05).The NIH-CPSI score of the two groups after treatment was compared,and the average reduction was 17.47±0.92 points in the treatment group and 10.56±0.49 points in the control group.The difference between the two groups was statistically significant(t=6.654,P<0.05).Conclusion:The effect of electrophysiological combined drug therapy is obviously better than that of simple drug therapy.Electrophysiological therapy for chronic prostatitis has definite clinical effect and is worth pro-moting and applying.
6.Study on untargeted metabolomics of Codonopsis pilosula from different producing areas based on ultra-performance liquid chromatography tandem high resolution mass spectrometry
Yuan-jing NIU ; Jia-qi WEN ; Hui-xin JI ; Jian-kuan LI ; Min GAO ; Yun-e BAI ; Jian-ping GAO
Acta Pharmaceutica Sinica 2023;58(7):1842-1850
Lu Dangshen, a traditional authentic medicinal material of Codonopsis Radix is mainly produced in Shangdang (Changzhi) area of Shanxi Province. Baitiao Dangshen is mainly produced in Gansu Province. Codonopsis Radix contains many kinds of components such as phenylpropanoids, polyalkynes, alkaloids, terpenes, fatty acids, flavonoids, and so on. At present, the effect of producing areas on its chemical compositions has not been systematically studied. This study analyzed the differences of metabolites among
7.IL-6 promotes pluripotency of mouse embryonic stem cells and regulates cardiac differentiation in a development-dependent manner.
Si-Qi JI ; Ya-Nan ZHAO ; Jian-Xia ZHOU ; Zong-Hai CHEN ; Hua-Min LIANG
Acta Physiologica Sinica 2023;75(1):49-58
Interleukin 6 (IL-6), an important component of cardiac microenvironment, favors cardiac repair by improving cardiomyocyte regeneration in different models. This study aimed to investigate the effects of IL-6 on stemness maintenances and cardiac differentiation of mouse embryonic stem cells (mESCs). The mESCs were treated with IL-6 for two days, and then subjected to CCK-8 essay for proliferation analysis and quantitative real-time PCR (qPCR) to evaluate the mRNA expression of genes related to stemness and germinal layers differentiation. Phosphorylation levels of stem cell-related signal pathways were detected by Western blot. siRNA was used to interfere the function of STAT3 phosphorylation. Cardiac differentiation was investigated by the percentage of beating embryoid bodies (EBs) and qPCR analysis of cardiac progenitor markers and cardiac ion channels. IL-6 neutralization antibody was applied to block the endogenous IL-6 effects since the onset of cardiac differentiation (embryonic day of 0, EB0). The EBs were collected on EB7, EB10 and EB15 to investigate the cardiac differentiation by qPCR. On EB15, Western blot was applied to investigate the phosphorylation of several signaling pathways, and immunochemistry staining was adopted to trace the cardiomyocytes. IL-6 antibody was administered for two days (short term) on EB4, EB7, EB10 or EB15, and percentages of beating EBs at late developmental stage were recorded. The results showed that exogenous IL-6 promoted mESCs proliferation and favored maintenances of pluripotency, evidenced by up-regulated mRNA expression of oncogenes (c-fos, c-jun) and stemness markers (oct4, nanog), down-regulated mRNA expression of germ layer genes (branchyury, FLK-1, pecam, ncam, sox17), and increased phosphorylation of ERK1/2 and STAT3. siRNA targeting JAK/STAT3 partially attenuated the effects of IL-6 on cell proliferation and mRNA expression of c-fos and c-jun. During differentiation, long term IL-6 neutralization antibody application decreased the percentage of beating EBs, down-regulated mRNA expression of ISL1, GATA4, α-MHC, cTnT, kir2.1, cav1.2, and declined the fluorescence intensity of cardiac α actinin in EBs and single cell. Long term IL-6 antibody treatment decreased the phosphorylation of STAT3. In addition, short term (2 d) IL-6 antibody treatment starting from EB4 significantly reduced the percentage of beating EBs in late development stage, while short term IL-6 antibody treatment starting from EB10 significantly increased the percentage of beating EBs on EB16. These results suggest that exogenous IL-6 promotes mESCs proliferation and favors stemness maintenance. Endogenous IL-6 regulates mESC cardiac differentiation in a development-dependent manner. These findings provide important basis for the study of microenvironment on cell replacement therapy, as well as a new perspective for understanding the pathophysiology of heart diseases.
Animals
;
Mice
;
Interleukin-6
;
Mouse Embryonic Stem Cells
;
Cell Differentiation
;
Proto-Oncogene Proteins c-fos
;
RNA, Messenger
8.Clinical value of lymph node dissection of No. 14cd during pancreaticoduodenectomy in patients with pancreatic head carcinoma.
Peng Fei WU ; Kai ZHANG ; Lei TIAN ; Jie YIN ; Ji Shu WEI ; Chun Hua XI ; Jian Min CHEN ; Feng GUO ; Zi Peng LU ; Yi MIAO ; Kui Rong JIANG
Chinese Journal of Surgery 2023;61(7):582-589
Objectives: To evaluate the positive rate of left posterior lymph nodes of the superior mesenteric artery (14cd-LN) in patients undergoing pancreaticoduodenectomy for pancreatic head carcinoma,to analyze the impact of 14cd-LN dissection on lymph node staging and tumor TNM staging. Methods: The clinical and pathological data of 103 consecutive patients with pancreatic cancer who underwent pancreaticoduodenectomy at Pancreatic Center,the First Affiliated Hospital of Nanjing Medical University from January to December 2022 were analyzed,retrospectively. There were 69 males and 34 females,with an age(M (IQR))of 63.0 (14.0) years (range:48.0 to 86.0 years). The χ2 test and Fisher's exact probability method was used for comparison of the count data between the groups,respectively. The rank sum test was used for comparison of the measurement data between groups. Univariate and multivariate Logistic regression analyzes were used for the analysis of risk factors. Results: All 103 patients underwent pancreaticoduodenectomy successfully using the left-sided uncinate process and the artery first approach. Pathological examination showed pancreatic ductal adenocarcinoma in all cases. The location of the tumors was the pancreatic head in 40 cases,pancreatic head-uncinate in 45 cases,and pancreatic head-neck in 18 cases. Of the 103 patients,38 cases had moderately differentiated tumor and 65 cases had poorly differentiated tumor. The diameter of the lesions was 3.2 (0.8) cm (range:1.7 to 6.5 cm),the number of lymph nodes harvested was 25 (10) (range:11 to 53),and the number of positive lymph nodes was 1 (3) (range:0 to 40). The lymph node stage was stage N0 in 35 cases (34.0%),stage N1 in 43 cases (41.7%),and stage N2 in 25 cases (24.3%). TNM staging was stage ⅠA in 5 cases (4.9%),stage ⅠB in 19 cases (18.4%),stage ⅡA in 2 cases (1.9%),stage ⅡB in 38 cases (36.9%),stage Ⅲ in 38 cases (36.9%),and stage Ⅳ in 1 case (1.0%). In 103 patients with pancreatic head cancer,the overall positivity rate for 14cd-LN was 31.1% (32/103),and the positive rates for 14c-LN and 14d-LN were 21.4% (22/103) and 18.4% (19/103),respectively. 14cd-LN dissection increased the number of lymph nodes (P<0.01) and positive lymph nodes (P<0.01). As a result of the 14cd-LN dissection,the lymph node stage was changed in 6 patients,including 5 patients changed from N0 to N1 and 1 patient changed from N1 to N2. Similarly,the TNM stage was changed in 5 patients,including 2 patients changed from stage ⅠB to ⅡB,2 patients changed from stage ⅡA to ⅡB,and 1 patient changed from stage ⅡB to Ⅲ. Tumors located in the pancreatic head-uncinate (OR=3.43,95%CI:1.08 to 10.93,P=0.037) and the positivity of 7,8,9,12 LN (OR=5.45,95%CI:1.45 to 20.44,P=0.012) were independent risk factors for 14c-LN metastasis; while tumors with diameter >3 cm (OR=3.93,95%CI:1.08 to 14.33,P=0.038) and the positivity of 7,8,9,12 LN (OR=11.09,95%CI:2.69 to 45.80,P=0.001) were independent risk factors for 14d-LN metastasis. Conclusion: Due to its high positive rate in pancreatic head cancer,dissection of 14cd-LN during pancreaticoduodenectomy should be recommended,which can increase the number of lymph nodes harvested,provide a more accurate lymph node staging and TNM staging.
Male
;
Female
;
Humans
;
Pancreaticoduodenectomy/methods*
;
Retrospective Studies
;
Prognosis
;
Lymph Node Excision/methods*
;
Lymph Nodes/pathology*
;
Pancreatic Neoplasms/pathology*
;
Neoplasm Staging
9.Clinical Features and Outcomes of the Patients with B-Cell Chronic Lymphoproliferative Disease in the New Drug Era.
Cheng-Bo XU ; Min HU ; Jian-Zhen SHEN ; Hua-Qin XU ; Rui-Ji ZHENG
Journal of Experimental Hematology 2023;31(3):722-729
OBJECTIVE:
To analyze the clinical characteristics of the patients with B-cell chronic lymphoproliferative disease(B-CLPD) in the new drug era and the effect of new drug treatment on efficacy and survival.
METHODS:
The clinical and laboratory data of 200 cases B-CLPD patients diagnosed between April 2015 and August 2021 were analyzed retrospectively. The clinical efficacy and survival of the patients under different treatments including Bruton tyrosine kinase(BTK) inhibitors, rituximab, and chemotherapy alone were analyzed. The prognostic factors affecting the survival of patients were analyzed by univarite analysis and multivariate analysis.
RESULTS:
There were 119 male(59.5%) and 81 female(40.5%) in 200 cases B-CLPD patients, the sex ratio(male/female) was 1.5∶1 with median age of 61(30- 91) years old. The distribution of subtypes were as fallows: 51 cases (25.5%) of chronic lymphocytic leukemia/small lymphocytic lymphoma(CLL/SLL), 64(32.0%) cases of follicular lymphoma(FL), 40(20.0%) cases mantle cell lymphoma(MCL), 30(15.0%) cases of marginal zone lymphoma(MZL), 10(5%) cases of lymphoplasmacytic lymphoma/waldenstrom macroglobulinemia(LPL/WM), 5(2.5%) cases of B cell chronic lymphoproliferative disorders unclassified(B-CLPD-U) . The main clinical manifestation of 102 patients was lymph node enlargement, 32 cases were complicated with B symptoms. Among CLL/SLL patients, there were 12(23.5%) cases in Binet A and 39(76.5%) cases in Binet B/C. There were 29 patients(20.9%) in Ann Arbor or Lugano stage I-II and 110 cases(79.1%) in stage III-IV of other subtypes. The complete remission(CR) rate was 43.1%(25/58), 40.2%(39/97), 7.1%(1/14), and overaIl response rate(ORR) was 87.9%(51/58), 62.9%(61/97), 28.6%(4/14) in the groups of BTK inhibitors, rituximab-based therapy, and chemotherapy alone. The 3-year OS rate and PFS rate in all patients was 79.2% and 72.4% respectively. The 3-year OS rate of patient with MZL, CLL/SLL, FL,WM was 94.7%, 87.7%, 86.8% and 83.3% respectively, while the 3-year OS rate of MCL was only 40.6%, which was significantly lower than other subtypes. The median OS of patients treated with BTK inhibitors and rituximab-based therapy was 20.5 and 18.5 months respectively, and the 3-year OS rate was 97.4% and 90.7%. However, the median PFS of patients receiving chemotherapy alone was 4 months, and the 1-year OS rate was 52.7%, which was statistically significant compared with the other two groups(P<0.05). Univarite analysis showed that anemia, elevated lactate dehydrogenase, elevated β2-microglobulin, and splenomegaly were the poor prognostic factors for OS(P<0.05), elevated lactate dehydrogenase was also poor prognostic factors for PFS(P<0.05). Multifactor analysis showed that anemia and elevated lactate dehydrogenase were the independent poor prognostic factors for survival(P<0.05).
CONCLUSION
The clinical features of B-CLPD was various, anemia and elevated lactate dehydrogenase are the prognostic factors for poor survival. BTK inhibitors and new immunotherapy can improve the survival and prognosis of patients in the new drug era.
Humans
;
Adult
;
Female
;
Male
;
Middle Aged
;
Aged
;
Aged, 80 and over
;
Rituximab/therapeutic use*
;
Leukemia, Lymphocytic, Chronic, B-Cell/drug therapy*
;
Retrospective Studies
;
Lymphoma, Mantle-Cell
;
Prognosis
;
Lymphoma, B-Cell, Marginal Zone
;
Lactate Dehydrogenases
10.A new class of potent liver injury protective compounds: Structural elucidation, total synthesis and bioactivity study.
Kailong JI ; Wei LIU ; Weihang YIN ; Xiangrong KONG ; Honghong XU ; Zeng-Wei LAI ; Jing-Ya LI ; Jian-Min YUE
Acta Pharmaceutica Sinica B 2023;13(8):3414-3424
A new class of potent liver injury protective compounds, phychetins A-D ( 1- 4) featuring an unique 6/6/5/6/5 pentacyclic framework, were isolated and structurally characterized from a Chinese medicinal plant Phyllanthus franchetianus. Compounds 2- 4 are three pairs of enantiomers that were initially obtained in a racemic manner, and were further separated by chiral HPLC preparation. Compounds 1- 4 were proposed to be originated biosynthetically from a coexisting lignan via an intramolecular Friedel-Crafts reaction as the key step. A bioinspired total synthesis strategy was thus designated, and allowed the effective syntheses of compounds 2- 4 in high yields. Some of compounds exhibited significant anti-inflammatory activities in vitro via suppressing the production of pro-inflammatory cytokine IL-1β. Notably, compound 4, the most active enantiomeric pair in vitro, displayed prominent potent protecting activity against liver injury at a low dose of 3 mg/kg in mice, which could serve as a promising lead for the development of acute liver injury therapeutic agent.

Result Analysis
Print
Save
E-mail