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Hoffman C, Cheng J, Morales R, Ji D, Dabaghian Y. Altered patterning of neural activity in a tauopathy mouse model. bioRxiv 2024:2024.03.23.586417. [PMID: 38585991 PMCID: PMC10996513 DOI: 10.1101/2024.03.23.586417] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/09/2024]
Abstract
Alzheimer's disease (AD) is a complex neurodegenerative condition that manifests at multiple levels and involves a spectrum of abnormalities ranging from the cellular to cognitive. Here, we investigate the impact of AD-related tau-pathology on hippocampal circuits in mice engaged in spatial navigation, and study changes of neuronal firing and dynamics of extracellular fields. While most studies are based on analyzing instantaneous or time-averaged characteristics of neuronal activity, we focus on intermediate timescales-spike trains and waveforms of oscillatory potentials, which we consider as single entities. We find that, in healthy mice, spike arrangements and wave patterns (series of crests or troughs) are coupled to the animal's location, speed, and acceleration. In contrast, in tau-mice, neural activity is structurally disarrayed: brainwave cadence is detached from locomotion, spatial selectivity is lost, the spike flow is scrambled. Importantly, these alterations start early and accumulate with age, which exposes progressive disinvolvement the hippocampus circuit in spatial navigation. These features highlight qualitatively different neurodynamics than the ones provided by conventional analyses, and are more salient, thus revealing a new level of the hippocampal circuit disruptions.
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Affiliation(s)
- C Hoffman
- Department of Neurology, The University of Texas McGovern Medical School, 6431 Fannin St, Houston, TX 77030
| | - J Cheng
- Department of Neuroscience, Baylor College of Medicine, Houston, TX 77030
| | - R Morales
- Department of Neurology, The University of Texas McGovern Medical School, 6431 Fannin St, Houston, TX 77030
| | - D Ji
- Department of Neuroscience, Baylor College of Medicine, Houston, TX 77030
| | - Y Dabaghian
- Department of Neurology, The University of Texas McGovern Medical School, 6431 Fannin St, Houston, TX 77030
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Song Y, Yoon DH, Yang H, Cao J, Ji D, Koh Y, Jing H, Eom H, Kwak J, Lee W, Lee J, Shin H, Jin J, Wang M, Yang Z, Kim WS, Zhu J. Phase I dose escalation and expansion study of golidocitinib, a highly selective JAK1 inhibitor, in relapsed or refractory peripheral T-cell lymphomas. Ann Oncol 2023; 34:1055-1063. [PMID: 37673210 DOI: 10.1016/j.annonc.2023.08.013] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2023] [Revised: 08/09/2023] [Accepted: 08/22/2023] [Indexed: 09/08/2023] Open
Abstract
BACKGROUND Relapsed or refractory peripheral T-cell lymphomas (r/r PTCLs) are a group of rare and aggressive diseases that lack effective therapies. Constitutive activation of the Janus kinase (JAK)/signal transducer and activator of transcription (STAT) pathway is reported to be associated with PTCLs. Golidocitinib is an oral, potent JAK1 selective inhibitor evaluated in a phase I/II multinational study in patients with r/r PTCLs. PATIENTS AND METHODS Patients with r/r PTCLs were eligible. The primary objectives were to assess safety and tolerability of golidocitinib and to define its recommended phase II dose (RP2D). The secondary objectives were to evaluate its antitumor activity and pharmacokinetics (PK). RESULTS A total of 51 patients were enrolled and received golidocitinib treatment at 150 or 250 mg once daily (QD). The median prior lines of therapies were 2 (range: 1-8). Golidocitinib was tolerated at both doses tested, while a higher incidence of serious adverse events and dose modifications at 250 mg were observed. The most common grade ≥3 drug-related treatment-emergent adverse events were neutropenia (27.5%) and thrombocytopenia (11.8%). An objective response rate of 39.2% and a complete response rate of 21.6% were observed. With median follow-up time of 14.7 and 15.9 months, the median duration of response (DoR) and progression-free survival were 8.0 and 3.3 months, respectively. Based on these data, 150 mg QD was defined as the RP2D. Golidocitinib demonstrated a favorable PK profile as an oral agent. Biomarker analysis suggested a potential correlation between JAK/STAT pathway aberrations and clinical activity of golidocitinib. CONCLUSIONS In this phase I study, golidocitinib demonstrated an acceptable safety profile and encouraging antitumor efficacy in heavily pretreated patients with r/r PTCLs. These results support the initiation of the multinational pivotal study in patients with r/r PTCLs.
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Affiliation(s)
- Y Song
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), Department of Lymphoma, Peking University Cancer Hospital and Institute, Beijing, China
| | - D H Yoon
- Department of Oncology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, South Korea
| | - H Yang
- Department of Lymphoma, Cancer Hospital of the University of Chinese Academy of Sciences (Zhejiang Cancer Hospital), Hangzhou
| | - J Cao
- Department of Medical Oncology, Fudan University Shanghai Cancer Center, Shanghai, China
| | - D Ji
- Department of Medical Oncology, Fudan University Shanghai Cancer Center, Shanghai, China
| | - Y Koh
- Department of Internal Medicine, Division of Hematology and Medical Oncology, Seoul National University Hospital, Seoul, South Korea
| | - H Jing
- Department of Hematology and Lymphoma Research Center, Peking University Third Hospital, Beijing, China
| | - H Eom
- Hematology-Oncology Clinic, National Cancer Center, Goyang
| | - J Kwak
- Department of Internal Medicine, Chonbuk National University Medical School, Jeonju
| | - W Lee
- Department of Hematology-Oncology, Inje University College of Medicine, Busan Paik Hospital, Busan
| | - J Lee
- Division of Hematology-Oncology, Department of Internal Medicine, Seoul National University Bundang Hospital, Seongnam
| | - H Shin
- Division of Hematology-Oncology, Department of Internal Medicine, Medical Research Institute, Pusan National University Hospital, Pusan National University School of Medicine, Busan, South Korea
| | - J Jin
- Department of Hematology, The First Affiliated Hospital, Zhejiang University College of Medicine, Hangzhou
| | - M Wang
- Dizal Pharmaceutical, Jiangsu, China
| | - Z Yang
- Dizal Pharmaceutical, Jiangsu, China
| | - W S Kim
- Division of Hematology and Oncology, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, South Korea.
| | - J Zhu
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), Department of Lymphoma, Peking University Cancer Hospital and Institute, Beijing, China.
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Mao C, Ji D, Ding Y, Zhang Y, Song W, Liu L, Wu Y, Song L, Feng X, Zhang J, Cao J, Xu N. Suvemcitug as second-line treatment of advanced or metastatic solid tumors and with FOLFIRI for pretreated metastatic colorectal cancer: phase Ia/Ib open label, dose-escalation trials. ESMO Open 2023; 8:101540. [PMID: 37178668 DOI: 10.1016/j.esmoop.2023.101540] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2023] [Revised: 03/20/2023] [Accepted: 03/29/2023] [Indexed: 05/15/2023] Open
Abstract
BACKGROUND Suvemcitug (BD0801), a novel humanized rabbit monoclonal antibody against vascular endothelial growth factor, has demonstrated promising antitumor activities in preclinical studies. PATIENTS AND METHODS The phase Ia/b trials investigated the safety and tolerability and antitumor activities of suvemcitug for pretreated advanced solid tumors and in combination with FOLFIRI (leucovorin and fluorouracil plus irinotecan) in second-line treatment of metastatic colorectal cancer using a 3 + 3 dose-escalation design. Patients received escalating doses of suvemcitug (phase Ia: 2, 4, 5, 6, and 7.5 mg/kg; phase Ib: 1, 2, 3, 4, and 5 mg/kg plus FOLFIRI). The primary endpoint was safety and tolerability in both trials. RESULTS All patients in the phase Ia trial had at least one adverse event (AE). Dose-limiting toxicities included grade 3 hyperbilirubinemia (one patient), hypertension and proteinuria (one patient), and proteinuria (one patient). The maximum tolerated dose was 5 mg/kg. The most common grade 3 and above AEs were proteinuria (9/25, 36%) and hypertension (8/25, 32%). Forty-eight patients (85.7%) in phase Ib had grade 3 and above AEs, including neutropenia (25/56, 44.6%), reduced leucocyte count (12/56, 21.4%), proteinuria (10/56, 17.9%), and elevated blood pressure (9/56, 16.1%). Only 1 patient in the phase Ia trial showed partial response, [objective response rate 4.0%, 95% confidence interval (CI) 0.1% to 20.4%] whereas 18/53 patients in the phase Ib trial exhibited partial response (objective response rate 34.0%, 95% CI 21.5% to 48.3%). The median progression-free survival was 7.2 months (95% CI 5.1-8.7 months). CONCLUSIONS Suvemcitug has an acceptable toxicity profile and exhibits antitumor activities in pretreated patients with advanced solid tumors or metastatic colorectal cancer.
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Affiliation(s)
- C Mao
- Department of Medical Oncology, The First Affiliated Hospital of Medical College of Zhejiang University, Shangcheng District, Hangzhou, Zhejiang Province
| | - D Ji
- Department of Head & Neck Tumors and Neuroendocrine Tumors, Fudan University Shanghai Cancer Hospital, Xuhui District, Shanghai; Department of Oncology, Shanghai Medical College, Fudan University, Xuhui District, Shanghai, China
| | - Y Ding
- Phase I Clinical Trials Unit, The First Hospital of Jilin University, Chaoyang District, Changchun, Jilin Province, China
| | - Y Zhang
- Department of Gastrointestinal Medical Oncology, Harbin Medical University Cancer Hospital, Nangang District, Harbin, China
| | - W Song
- Clinical Science, Shandong Simcere Bio-Pharmaceutical Co., Ltd., Yantai, Shandong Province, China
| | - L Liu
- Clinical Statistics, Shandong Simcere Bio-Pharmaceutical Co., Ltd., Yantai, Shandong Province, China
| | - Y Wu
- Clinical Science, Shandong Simcere Bio-Pharmaceutical Co., Ltd., Yantai, Shandong Province, China
| | - L Song
- Clinical Pharmacology, Shandong Simcere Bio-Pharmaceutical Co., Ltd., Yantai, Shandong Province, China
| | - X Feng
- Clinical Science, Shandong Simcere Bio-Pharmaceutical Co., Ltd., Yantai, Shandong Province, China
| | - J Zhang
- Clinical Science, Shandong Simcere Bio-Pharmaceutical Co., Ltd., Yantai, Shandong Province, China
| | - J Cao
- Department of Lymphoma, Fudan University Shanghai Cancer Hospital, Xuhui District, Shanghai, China.
| | - N Xu
- Department of Medical Oncology, The First Affiliated Hospital of Medical College of Zhejiang University, Shangcheng District, Hangzhou, Zhejiang Province.
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Zhang M, Chen X, Yang F, Song Y, Zhang D, Chen Q, Ma Y, Wang S, Ji D, Duan Z, Zhang L, Wang Q. Evaluation of Left Ventricular Mass in Different Cardiac Geometry Using Three-Dimensional Contrast-Enhanced Echocardiography. Int Heart J 2023; 64:885-893. [PMID: 37778991 DOI: 10.1536/ihj.22-663] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/03/2023]
Abstract
A total of 69 patients were enrolled in the study, including 23 patients with hypertrophic cardiomyopathy (HCM), 26 patients with Left Ventricle (LV) enlargement comprising 16 dilated cardiomyopathy (DCM) patients and 10 ischemic cardiomyopathy (ICM) patients, and 20 control subjects. All patients underwent 2DE, contrast-enhanced 2DE (Contrast-2DE), 3DE, Contrast-3DE, and single photon emission computed tomography (SPECT) examinations. The 2DE-AL and 3DE methods measured the left ventricular mass (LVM). The results were compared with those measured by SPECT. The measured LVM of the 69 patients was systematically overestimated by 2DE-AL (177.4 ± 56.2 g), Contrast-2DE-AL (174.5 ± 55.5 g), 3DE (167.3 ± 59.2 g), and Contrast-3DE (154.2 ± 46.7 g) when compared with SPECT (148.5 ± 52.4 g) (P < 0.05), while Contrast-3DE provided the best agreement with SPECT in LVM measurement (r = 0.898, P < 0.001) and had the smallest deviation (5.7 ± 23.1 g). 3DE overestimated LVM more compared to Contrast-3DE in LV hypertrophy group (165.5 ± 37.9 g versus 153.5 ± 27.6 g, P = 0.003) and LV enlargement group (204.5 ± 69.3 g versus 183.5 ± 53.5 g, P = 0.006). For 2DE methods, there was no significant difference between the LVM obtained with or without contrast enhancement in control group (132.3 ± 23.6 g versus 128.4 ± 23.3 g), LV hypertrophy group (177.7 ± 38.6 versus 178.3 ± 30.9 g, P = 0.889), and LV enlargement group (211.9 ± 63.2 g versus 206.5 ± 66.0 g, P = 0.386). The difference between LVM measured by 2DE-AL and SPECT was the greatest (27.9 ± 34.0 g), especially in LV hypertrophy group and LV enlargement group (LV hypertrophy group 39.7 ± 26.0 g; LV enlargement group 24.2 ± 42.8 g). To conclude, Contrast-3DE and SPECT show greater consistency in LVM measurement, especially in cardiomyopathy, when compared with 2DE. Administering contrast can effectively reduce the overestimation of LVM by non-contrast DE.
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Affiliation(s)
- Meiqing Zhang
- Department of Cardiology, Fourth Medical Center of Chinese PLA General Hospital
| | - Xu Chen
- Medical School of Chinese PLA
| | - Feifei Yang
- Department of Cardiology, Sixth Medical Center of Chinese PLA General Hospital
| | - Yanjie Song
- Department of Cardiology, Fourth Medical Center of Chinese PLA General Hospital
| | - Dai Zhang
- Department of Cardiology, Fourth Medical Center of Chinese PLA General Hospital
| | - Qiang Chen
- Department of Cardiology, Fourth Medical Center of Chinese PLA General Hospital
| | - Yongjiang Ma
- Department of Cardiology, Fourth Medical Center of Chinese PLA General Hospital
| | - Shuhua Wang
- Department of Cardiology, Fourth Medical Center of Chinese PLA General Hospital
| | - Dongdong Ji
- Department of Cardiology, Fourth Medical Center of Chinese PLA General Hospital
| | - Zhongxiang Duan
- Department of Nuclear Medicine, Fourth Medical Center of Chinese PLA General Hospital
| | - Liwei Zhang
- Department of Cardiology, Sixth Medical Center of Chinese PLA General Hospital
| | - Qiushuang Wang
- Department of Cardiology, Fourth Medical Center of Chinese PLA General Hospital
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Xu Y, Ji D, Pan P, Li T, Han LX, Zhang Z, Wang Y, Li H, Chen XF, Zheng XJ, Xu L, Liu HX, Meng QH, Wang MZ, Zheng QS. 1175P Pharmacokinetics of ensartinib in advanced solid tumors and anaplastic lymphoma kinase-positive non-small cell lung cancer. Ann Oncol 2022. [DOI: 10.1016/j.annonc.2022.07.1298] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022] Open
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Fan Y, Ji D, Luo Y, Wang J, Chen S, Lan B, Xu B. 207P Comparison of CDK4/6 inhibitors, PI3K/mTOR inhibitors, and HDAC inhibitors in the second-line treatment of hormone receptor-positive, HER2-negative advanced breast cancer: A network meta-analysis. Ann Oncol 2022. [DOI: 10.1016/j.annonc.2022.07.241] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022] Open
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Abstract
This study attempted to determine the expression of p21-activated kinase 4 (PAK4) in non-small cell lung cancer (NSCLC) tissues and the normal lung tissues. The correlation between PAK4 expression and prognosis of NSCLC patients was also evaluated in the present study. The expression level of PAK4 was measured by high-performance liquid chromatography method. Chi-square test was adopted to explore the relationship of PAK4 expression and clinical features. Kaplan-Meier survival curves were plotted to delineate the overall survival rate of NSCLC patients. Cox regression analysis was performed to evaluate the prognostic significance of PAK4 expression in NSCLC. The PAK4 expression in NSCLC tissue samples was significantly higher than that in normal lung tissues (P<0.001) and shared significant correlation with Eastern Cooperative Oncology Group score, histological type, and distant metastasis (P<0.05). Survival curve revealed that NSCLC patients with high PAK4 expression had relatively higher mortality than those with low PAK4 expression (P = .001). Cox regression analysis explained that PAK4 expression was associated with the prognosis of NSCLC patients (P = .024; HR, 3.104; 95% CI, 1.164-8.278). In a word, PAK4 was highly expressed in NSCLC tissues and could act as a prognostic factor for NSCLC patients.
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Affiliation(s)
- Chenghui Li
- Department of Medical Oncology, Anqing Hospital Affiliated to Medical University of Anhui, Anqing, China
| | - Dongdong Ji
- Department of Medical Oncology, Anqing Hospital Affiliated to Medical University of Anhui, Anqing, China
| | - Aixiong Duan
- Department of Medical Oncology, Anqing Hospital Affiliated to Medical University of Anhui, Anqing, China
- *Correspondence: Aixiong Duan, Department of Medical Oncology, Anqing Hospital Affiliated to Medical University of Anhui, Anqing, China (e-mail: )
| | - Qian Jiang
- Department of Medical Oncology, Anqing Hospital Affiliated to Medical University of Anhui, Anqing, China
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Huang Q, Ji D, Tian X, Ma L, Sun X. [Berberine inhibits erastin-induced ferroptosis of mouse hippocampal neuronal cells possibly by activating the Nrf2-HO-1/GPX4 pathway]. Nan Fang Yi Ke Da Xue Xue Bao 2022; 42:937-943. [PMID: 35790446 DOI: 10.12122/j.issn.1673-4254.2022.06.19] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
OBJECTIVE To explore the mechanism by which berberine inhibits ferroptosis of mouse hippocampal neuronal cells (HT22). METHODS Cultured HT22 cells were pretreated with 30 or 60 μmol/L berberine for 2 h before exposure to 0.5 μmol/L erastin for 8 h, and the cell proliferation, intracellular ferric iron level, changes in intracellular reactive oxygen species (ROS) and cell apoptosis were detected using CCK-8, Fe2+ fluorescent probe, fluorescent dye (DAPI) and fluorescent probe (H2DCFH-DA). RT-qPCR and Western blotting were used to detect the mRNA and protein expressions of Nrf2, HO-1 and GPX4 in the cells. We further tested the effects of treatments with 2 μmol/L ML385 (a Nrf2 inhibitor), 60 μmol/L berberine and erastin in the cells to explore the protective mechanism of berberine against erastin-induced ferroptosis in the neuronal cells. RESULTS Treatment with 0.5 μmol/L erastin significantly lowered the viability of HT22 cells (P < 0.05) and increased the production of ROS, cell apoptosis rate and ferric iron level (P < 0.05). Pretreatment with 30 and 60 μmol/L berberine both significantly increased the vitality of erastin-exposed cells (P < 0.05) and lowered the levels of intracellular ROS and ferric iron content (P < 0.05). RT-qPCR and Western blotting showed that berberine obviously promoted the expressions of Nrf2, HO-1 and GPX4 in the cells (P < 0.05), and treatment with ML385 significantly inhibited the Nrf2-HO-1/GPX4 pathway, increased intracellular ROS and ferric iron contents and mitigated the protective effect of berberine against erastin-induced ferroptosis (P < 0.05). CONCLUSION Berberine can inhibit erastin-induced ferroptosis in HT22 cells possibly by activating the Nrf2-HO-1/ GPX4 pathway.
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Affiliation(s)
- Q Huang
- Department of Clinical Medicine, Biochemical Drugs Engineering and Technological Research Center of Anhui Province, Bengbu 233030, China
| | - D Ji
- Department of Clinical Medicine, Biochemical Drugs Engineering and Technological Research Center of Anhui Province, Bengbu 233030, China
| | - X Tian
- Department of Clinical Medicine, Biochemical Drugs Engineering and Technological Research Center of Anhui Province, Bengbu 233030, China
| | - L Ma
- Department of Pharmacy, Bengbu Medical College, Biochemical Drugs Engineering and Technological Research Center of Anhui Province, Bengbu 233030, China
| | - X Sun
- Department of Pharmacy, Bengbu Medical College, Biochemical Drugs Engineering and Technological Research Center of Anhui Province, Bengbu 233030, China
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Ji D, Papachristou S, Francesconi M. The role of inflammation and cortisol in the relationship between social cognition abilities and later emotional or behavioural problems: evidence from a UK birth cohort. Eur Psychiatry 2022. [PMCID: PMC9562928 DOI: 10.1192/j.eurpsy.2022.928] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Introduction Deficits in social cognition have been associated with the onset of emotional and behavioural problems, but the biological mechanisms underlying this relationship remain unclear. Objectives This study examined whether diurnal cortisol patterns, systemic inflammation, or both, explained the association between social cognition difficulties and subsequent emotional and behavioural symptoms. Methods The sample consisted of 714 individuals from the Avon Longitudinal Study of Parents and Children (ALSPAC) with valid data on cortisol measures (age 15 years) and emotional or behavioural problems (age 17 years). Social cognition abilities were measured at 8, 11, and 14 years old. Inflammation was measured using serum levels of interleukin 6 (IL-6, age 9 years) and C-reactive protein (CRP, age 9 and 16 years). Bayesian structural equation modelling was used to investigate the mediating effect of cortisol or inflammation on the association between social cognitive difficulties and emotional or behavioural problems. Results Children with social cognition difficulties were associated with later emotional and behavioural problems. Flattened diurnal cortisol slope was associated with the hyperactivity/inattention problem two years later. Mediation analyses revealed that lower morning cortisol significantly mediated the associations between social communication difficulties at 8 years with hyperactivity/inattention and conduct problems in adolescence, with the adjustment of inflammation and all covariates. Systemic inflammation was not related to social cognitive difficulties or future emotional and behavioural problems. Conclusions The finding suggests that social cognition is related to cortisol activities longitudinally. It also expands the evidence that adolescents with behavioural problems are characterised by hypoactivity of the hypothalamic-pituitary-adrenal (HPA) axis. Disclosure No significant relationships.
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Ji D, We Q, Fan S, Kong L. The "Hand as Foot" teaching method in anatomy of the hepatic venous system and portal vein system. Asian J Surg 2022; 45:2109-2110. [PMID: 35570105 DOI: 10.1016/j.asjsur.2022.04.122] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2022] [Accepted: 04/29/2022] [Indexed: 11/02/2022] Open
Affiliation(s)
- Dongdong Ji
- Department of Hepatobiliary Surgery, Binzhou Medical University Hospital, Binzhou, Shandong Province, China
| | - Qiang We
- Department of Hepatobiliary Surgery, Binzhou Medical University Hospital, Binzhou, Shandong Province, China
| | - Songsong Fan
- Department of Hepatobiliary Surgery, Binzhou Medical University Hospital, Binzhou, Shandong Province, China
| | - Lingqun Kong
- Department of Hepatobiliary Surgery, Binzhou Medical University Hospital, Binzhou, Shandong Province, China.
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Niu C, Wang L, Ji D, Ren M, Ke D, Fu Q, Zhang K, Yang X. Fabrication of SA/Gel/C scaffold with 3D bioprinting to generate micro-nano porosity structure for skin wound healing: a detailed animal in vivo study. Cell Regen 2022; 11:10. [PMID: 35490207 PMCID: PMC9056587 DOI: 10.1186/s13619-022-00113-y] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/28/2021] [Accepted: 02/22/2022] [Indexed: 12/15/2022]
Abstract
Bioprinting has exhibited remarkable promises for the fabrication of functional skin substitutes. However, there are some significant challenges for the treatment of full-thickness skin defects in clinical practice. It is necessary to determine bioinks with suitable mechanical properties and desirable biocompatibilities. Additionally, the key for printing skin is to design the skin structure optimally, enabling the function of the skin. In this study, the full-thickness skin scaffolds were prepared with a gradient pore structure constructing the dense layer, epidermis, and dermis by different ratios of bioinks. We hypothesized that the dense layer protects the wound surface and maintains a moist environment on the wound surface. By developing a suitable hydrogel bioink formulation (sodium alginate/gelatin/collagen), to simulate the physiological structure of the skin via 3D printing, the proportion of hydrogels was optimized corresponding to each layer. These results reveal that the scaffold has interconnected macroscopic channels, and sodium alginate/gelatin/collagen scaffolds accelerated wound healing, reduced skin wound contraction, and re-epithelialization in vivo. It is expected to provide a rapid and economical production method of skin scaffolds for future clinical applications.
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Affiliation(s)
- Changmei Niu
- Novaprint Therapeutics Suzhou Co., Ltd, Suzhou, 215000, China
| | - Liyang Wang
- Novaprint Therapeutics Suzhou Co., Ltd, Suzhou, 215000, China.,Shanghai University of Engineering Science, Shanghai, 201620, China
| | - Dongdong Ji
- Department of Burns and Plastic Surgery Affiliated Suzhou Hospital Of Nanjing Medical University, Suzhou, 215000, China
| | - Mingjun Ren
- State Key Laboratory of Mechanical System and Vibration, School of Mechanical Engineering, Shanghai Jiaotong University, Shanghai, 200240, China
| | - Dongxu Ke
- Novaprint Therapeutics Suzhou Co., Ltd, Suzhou, 215000, China
| | - Qiang Fu
- The Department of Urology, Affiliated Sixth People's Hospital, Shanghai JiaoTong University, Shanghai, 200235, China.,Shanghai Eastern Institute of Urologic Reconstruction, Shanghai, 200000, China
| | - Kaile Zhang
- The Department of Urology, Affiliated Sixth People's Hospital, Shanghai JiaoTong University, Shanghai, 200235, China.,Shanghai Eastern Institute of Urologic Reconstruction, Shanghai, 200000, China
| | - Xi Yang
- Novaprint Therapeutics Suzhou Co., Ltd, Suzhou, 215000, China.
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Shao Y, Li L, Liu L, Yang Y, Huang J, Ji D, Zhou Y, Chen Y, Zhu Z, Sun B. CD44/ERM/F-actin complex mediates targeted nuclear degranulation and excessive neutrophil extracellular trap formation during sepsis. J Cell Mol Med 2022; 26:2089-2103. [PMID: 35146909 PMCID: PMC8980940 DOI: 10.1111/jcmm.17231] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2021] [Revised: 01/06/2022] [Accepted: 01/28/2022] [Indexed: 12/24/2022] Open
Abstract
Neutrophils release neutrophil extracellular traps (NETs) to capture and kill pathogens, but excessive NET release can damage the surrounding tissues. Myeloperoxidase (MPO) and neutrophil elastase (NE) are thought to be important in promoting histone depolymerization and DNA breakage in the nucleus. However, the detailed path by which MPO and NE enter the nucleus is unknown. In the present study, we observed that delayed fusion of azurophilic granules with the nuclear membrane 15–20 min after extracellular degranulation in activated neutrophils. In a subsequent experiment, we further demonstrated that this fusion leads to MPO entry into the nucleus and promotes nuclear histone depolymerization and DNA breakage, a process called ‘targeted nuclear degranulation’. This process can be effectively inhibited by dexamethasone and accompanied by the continuous low levels of MPO in the nucleus after PMA stimulation. Meanwhile, we found that ‘targeted nuclear degranulation’ is dependent on the CD44 translocation and subsequent redistribution of CD44 / ERM (Ezrin/Radixin/Moesin) / F‐actin complexes, which guides the movement of azurophilic granules towards the nucleus. Application of ERM phosphorylation inhibitors and importin activity inhibitors significantly reduced the complexes formation and redistribution. Taken together, these findings indicate for the first time that delayed ‘targeted nuclear degranulation’ after neutrophil activation is a key mechanism of NET formation. CD44/ERM/F‐actin complex mediates this process, which providing targets with promising prospects for the precise regulation of NET formation.
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Affiliation(s)
- Yiming Shao
- Department of Burns and Plastic Surgery, Affiliated Suzhou Hospital of Nanjing Medical University, Suzhou, Jiangsu Province, China
| | - Linbin Li
- Department of Burns and Plastic Surgery, Affiliated Suzhou Hospital of Nanjing Medical University, Suzhou, Jiangsu Province, China
| | - Lu Liu
- School of Medicine, Jiangsu University, Zhenjiang, Jiangsu Province, China
| | - Yunxi Yang
- Department of Burns and Plastic Surgery, Affiliated Suzhou Hospital of Nanjing Medical University, Suzhou, Jiangsu Province, China
| | - Jiamin Huang
- Department of Burns and Plastic Surgery, Affiliated Suzhou Hospital of Nanjing Medical University, Suzhou, Jiangsu Province, China
| | - Dongdong Ji
- Department of Burns and Plastic Surgery, Affiliated Suzhou Hospital of Nanjing Medical University, Suzhou, Jiangsu Province, China
| | - Yuying Zhou
- Department of Burns and Plastic Surgery, Affiliated Suzhou Hospital of Nanjing Medical University, Suzhou, Jiangsu Province, China
| | - Yi Chen
- Department of Burns and Plastic Surgery, Affiliated Suzhou Hospital of Nanjing Medical University, Suzhou, Jiangsu Province, China
| | - Zhechen Zhu
- Department of Burns and Plastic Surgery, Affiliated Suzhou Hospital of Nanjing Medical University, Suzhou, Jiangsu Province, China
| | - Bingwei Sun
- Department of Burns and Plastic Surgery, Affiliated Suzhou Hospital of Nanjing Medical University, Suzhou, Jiangsu Province, China
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Huang J, Zhu Z, Ji D, Sun R, Yang Y, Liu L, Shao Y, Chen Y, Li L, Sun B. Single-Cell Transcriptome Profiling Reveals Neutrophil Heterogeneity and Functional Multiplicity in the Early Stage of Severe Burn Patients. Front Immunol 2022; 12:792122. [PMID: 35116026 PMCID: PMC8803731 DOI: 10.3389/fimmu.2021.792122] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2021] [Accepted: 12/23/2021] [Indexed: 01/07/2023] Open
Abstract
The pathophysiological mechanisms, especially the roles of immune cells, underlying early stages of severe burn injury have not yet been fully clarified. Here, we analyzed circulating neutrophils (PMNs) in healthy donors and early burned patients by single-cell RNA sequencing to provide a comprehensive transcriptional landscape of PMNs in heterogeneity and functional multiplicity. Circulating PMNs in the healthy donors and burned groups were divided into five subgroups (G3, G4, G5a, G5b, G5c) with different functions. The dominant subsets of PMNs in homeostasis and burn injury significantly differed between groups. In addition, cells in the same subpopulation had the same core identity markers but performed different functions in healthy and burned states. Under burned conditions, PMN activation was very evident and accompanied by clear degranulation and metabolic abnormalities. Interestingly, was found that PMN activation, degranulation, chemotaxis, phagocytosis and reactive oxygen species (ROS) production in burned patients significantly differed between day 1 and days 2 or 3, thus providing a theoretical basis for PMN interventions in early burn stages. Significantly, previously undescribed transcription factors were also identified, including ZNF-787, ZNF-467, ZNF-189, ZNF-770, ZNF-262. In conclusion, this study conducted for the first time a detailed analysis of the heterogeneity and functional multiplicity of PMNs in early stages of severe burn injuries. Our findings attempted to clarify the influence of PMN heterogeneity on the pathophysiology and related mechanisms of burn injuries, which can provide new ideas for further research in burn intervention.
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Affiliation(s)
- Jiamin Huang
- Department of Burns and Plastic Surgery, Affiliated Suzhou Hospital of Nanjing Medical University, Suzhou, China
| | - Zhechen Zhu
- Department of Burns and Plastic Surgery, Affiliated Suzhou Hospital of Nanjing Medical University, Suzhou, China
| | - Dongdong Ji
- Department of Burns and Plastic Surgery, Affiliated Suzhou Hospital of Nanjing Medical University, Suzhou, China
| | - Ran Sun
- Department of Burns and Plastic Surgery, Affiliated Suzhou Hospital of Nanjing Medical University, Suzhou, China
| | - Yunxi Yang
- Department of Burns and Plastic Surgery, Affiliated Suzhou Hospital of Nanjing Medical University, Suzhou, China
| | - Lu Liu
- School of Medicine, Jiangsu University, Zhenjiang, China
| | - Yiming Shao
- Department of Burns and Plastic Surgery, Affiliated Suzhou Hospital of Nanjing Medical University, Suzhou, China
| | - Yi Chen
- Department of Burns and Plastic Surgery, Affiliated Suzhou Hospital of Nanjing Medical University, Suzhou, China
| | - Linbin Li
- Department of Burns and Plastic Surgery, Affiliated Suzhou Hospital of Nanjing Medical University, Suzhou, China
| | - Binwei Sun
- Department of Burns and Plastic Surgery, Affiliated Suzhou Hospital of Nanjing Medical University, Suzhou, China
- *Correspondence: Binwei Sun,
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14
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Ji D, Zhu QC, Wei YH. [The in vivo imaging of zebrafish for chemical vascular toxicity assessment]. Zhonghua Yu Fang Yi Xue Za Zhi 2022; 56:33-37. [PMID: 35092988 DOI: 10.3760/cma.j.cn112150-20210510-00457] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Objective: To evaluate the vascular toxicity of chemicals by a real-time observation approach using the transgenic zebrafish. Methods: The spatiotemporal vascular alterations of transgenic zebrafish after chemical exposure were assessed by laser confocal microscopy and high-content screening analysis, respectively. Results: The method using Laser Confocal Microscopy (LCM) is easier to operate and yields high-resolution images, while it is lower throughput and inefficient. In contrast, high-content analysis (HCA) analysis obtains high-quality data of vascular toxicity manifesting whole blood vasculature, whereas it requires delicate operation procedures and advanced experimental conditions. Conclusion: Two kinds of zebrafish imaging methods each have advantages and disadvantages. LCM is suitable for the evaluation of a small number of chemicals. HCA, a cutting-edge technology, has great potential for chemical safety assessment allowing high throughput vascular toxicity tests of a good number of chemicals at a time.
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Affiliation(s)
- D Ji
- Guangdong Provincial Key Laboratory of Food, Nutrition and Health, Department of Toxicology, School of Public Health, Sun Yat-sen University, Guangzhou 510080, China
| | - Q C Zhu
- Guangdong Provincial Key Laboratory of Food, Nutrition and Health, Department of Toxicology, School of Public Health, Sun Yat-sen University, Guangzhou 510080, China
| | - Y H Wei
- Guangdong Provincial Key Laboratory of Food, Nutrition and Health, Department of Toxicology, School of Public Health, Sun Yat-sen University, Guangzhou 510080, China
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15
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Kim W, Yoon D, Song Y, Koh Y, Cao J, Ji D, Yang H, Eom H, Jing H, Kwak J, Lee W, Lee J, Shin H, Jin J, Wang M, Li J, Huang X, Deng X, Yang Z, Zhu J. EARLY SAFETY AND EFFICACY DATA FROM A PHASE I/II TRIAL OF DZD4205, A SELECTIVE JAK1 INHIBITOR, IN RELAPSED/REFRACTORY PERIPHERAL T‐CELL LYMPHOMA. Hematol Oncol 2021. [DOI: 10.1002/hon.57_2879] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- W.‐S. Kim
- Samsung Medical Center Department of Hematology and Oncology Seoul Korea
| | - D.‐H. Yoon
- Asan Medical Center Department of Oncology ‐ Hematologic Cancer & BMT center Seoul Korea
| | - Y. Song
- Peking University Cancer Hospital Department of Lymphoma Beijing China
| | - Y. Koh
- Seoul National University Hospital Department of Hemato‐Oncology Center Seoul Korea
| | - J. Cao
- Fudan University Shanghai Cancer Center Department of Oncology Shanghai China
| | - D. Ji
- Fudan University Shanghai Cancer Center Department of Oncology Shanghai China
| | - H. Yang
- Zhejiang Cancer Hospital Department of Lymphoma Hangzhou China
| | - H.‐S. Eom
- National Cancer Center Center for Hematologic Malignancy Goyang Korea
| | - H. Jing
- Peking University Third Hospital Department of Hematology Beijing China
| | - J.‐Y. Kwak
- Chonbuk National University Hospital Department of Hemato‐oncology Jeonju Korea
| | - W.‐S. Lee
- Inje University Busan Paik Hospital Department of Hemato‐oncology Busan Korea
| | - J.‐S. Lee
- Seoul National University Bundang Hospital Department of Hematology & Medical Oncology Seongnam Korea
| | - H.‐J. Shin
- Pusan National University Hospital Department of Hemato‐oncology Busan Korea
| | - J. Jin
- The First Affiliated Hospital of Zhejiang University Department of Hematology Hangzhou China
| | - M. Wang
- Dizal Pharmaceuticals Bioscience Shanghai China
| | - J. Li
- Dizal Pharmaceuticals Clinical Development Shanghai China
| | - X. Huang
- Dizal Pharmaceuticals Clinical Development Shanghai China
| | - X. Deng
- Dizal Pharmaceuticals Biostatistics Shanghai China
| | - Z. Yang
- Dizal Pharmaceuticals Clinical Development Shanghai China
| | - J. Zhu
- Peking University Cancer Hospital Department of Lymphoma Beijing China
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Song C, Chongsuvivatwong V, Wangdui S, Mima D, Zhuoma C, Ji D, Luobu O, Sriplung H. Coverage and effectiveness of hypertension screening in different altitudes of Tibet autonomous region. BMC Public Health 2021; 21:33. [PMID: 33407265 PMCID: PMC7788880 DOI: 10.1186/s12889-020-09858-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2020] [Accepted: 11/09/2020] [Indexed: 12/13/2022] Open
Abstract
BACKGROUND Tibet is an autonomous region in China located around an average altitude of 4500 m above sea level. Since 2012 the local government of Tibet has been providing free physical examinations, including screening for hypertension. However, the coverage and effectiveness of this free program have not been uncovered. This study aims to assess the coverage and effectiveness of hypertension screening and management program in 3 altitude levels of Tibet, and also the determinants of the success of the screening program. METHODS A stratified cluster survey was conducted among 1636 residents aged 18 years or over in three different altitude areas in Tibet. We adjusted for age and sex based on national census data and used weighted logistic regression models to find factors associated with hypertension screening. RESULTS The coverage of the hypertension screening program evaluated by participation rate in the previous screening was 94.9%, while 24.7% (95% CI: 22.1-27.3%) of them were diagnosed with hypertension. Females and alcohol drinkers were more likely to be screened. Among those diagnosed with hypertension, 28.7% had it under control. High altitude areas had a high proportion of controlled hypertension. The overall rate of controlled hypertension in high, moderate and low altitude areas was 35.1% (95% CI: 24.8-45.3%), 32.7% (95% CI: 22.2-43.2%) and 23.7% (95% CI: 14.7-32.6%), respectively. Younger aged persons were more likely to have better control of their hypertension. CONCLUSIONS The coverage of hypertension screening in Tibet was high, especially in the low altitude areas. However, the effectiveness of hypertension control was low, indicating a need to implement the treatment adherence routines into the current screening interventions.
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Affiliation(s)
- Ci Song
- Medical College, Tibet University, Lhasa, 850002 China
- Epidemiology Unit, Faculty of Medicine, Prince of Songkla University, Hat Yai, Songkhla, 90110 Thailand
| | | | - Suolang Wangdui
- Bomi county centers for disease control and prevention, Nyingchi, 860300 China
| | - Danzeng Mima
- Dagze district centers for disease control and prevention, Lhasa, 850100 China
| | - Cuoji Zhuoma
- Nagarze county centers for disease control and prevention, Lhokha, 851100 China
| | - D. Ji
- Medical College, Tibet University, Lhasa, 850002 China
| | - Ouzhu Luobu
- Medical College, Tibet University, Lhasa, 850002 China
| | - Hutcha Sriplung
- Epidemiology Unit, Faculty of Medicine, Prince of Songkla University, Hat Yai, Songkhla, 90110 Thailand
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Zhang Y, Wang Y, Ji D, Qian J, Xu J, Shi J. [Ultrasound cardiac output monitor and thermodilution for cardiac function monitoring in critical patients: a Meta-analysis]. Zhonghua Wei Zhong Bing Ji Jiu Yi Xue 2020; 31:1462-1468. [PMID: 32029030 DOI: 10.3760/cma.j.issn.2095-4352.2019.12.006] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
OBJECTIVE To assess the differences between ultrasound cardiac output monitor (USCOM) and thermodilution (TD) systematically in cardiac function monitoring of critically ill patients. METHODS The Chinese and English literatures about the clinical trials which using USCOM and TD to monitor cardiac function published in CNKI, Wanfang database, China biomedical literature database, VIP database, China Clinical Trial Registration Center, PubMed, Embase and Cochrane Library were searched by computer from the establishment to December 2018. Some indicators, like cardiac output (CO), cardiac index (CI), stroke volume (SV) and other parameters were used to evaluate cardiac function. Literature search, quality evaluation and data extraction were conducted independently by two authors. The tailored Quality Assessment of Diagnostic Accuracy Studies (QUADAS-2) was used for literature quality evaluation. EndNote X6 was used for literature screening and management. RevMan 5.3 was used for Meta-analysis. Funnel chart analysis was used for publication bias. RESULTS A total of 26 studies involving 772 patients were included. Among them, there were 5 literatures found that the agreements of cardiac function between the USCOM and TD methods were poor. Meta-analysis showed that there was no significant difference between the two methods in CO and CI monitoring [CO: mean difference (MD) = -0.06, 95% confidence interval (95%CI) was -0.17 to 0.05, P = 0.31; CI: MD = -0.04, 95%CI was -0.13 to 0.05, P = 0.38]. Subgroup analysis of different TD methods [pulmonary artery catheter (PAC), pulse indicator continuous cardiac output (PiCCO)] and different windows of USCOM ultrasonic probe [aorta (AA), pulmonary artery (PA)] in CO monitoring was not shown significant difference yet (PAC: MD = -0.07, 95%CI was -0.18 to 0.04, P = 0.23; PiCCO: MD = 0.09, 95%CI was -0.31 to 0.50, P = 0.65; AA windows: MD = -0.14, 95%CI was -0.31 to 0.02, P = 0.09; PA windows: MD = -0.00, 95%CI was -0.15 to 0.14, P = 0.95; AA/PA windows: MD = 0.23, 95%CI was -0.40 to 0.86, P = 0.47). However, the difference in SV was statistically significant between the USCOM and TD method (MD = 1.48, 95%CI was 0.04 to 2.92, P = 0.04). Funnel chart showed that the literature distribution of CO and CI monitoring were basically symmetrical, indicating that the bias of literature publication is small. CONCLUSIONS USCOM has good consistency with TD method in monitoring the cardiac function parameters of CO and CI, and different windows of ultrasonic probe of USCOM have no significant influence on the monitoring results, but there is significant difference in the consistency of the two methods in SV monitoring.
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Affiliation(s)
- Yun Zhang
- Department of Emergency, Wuxi People's Hospital of Nanjing Medical University, Wuxi 214023, Jiangsu, China. Corresponding author: Shi Jing,
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18
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Song W, Jiang B, Ji D. Improving the Tribological Performance of MAO Coatings by Using a Stable Sol Electrolyte Mixed with Cellulose Additive. Materials (Basel) 2019; 12:E4226. [PMID: 31888232 PMCID: PMC6947229 DOI: 10.3390/ma12244226] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/23/2019] [Revised: 12/10/2019] [Accepted: 12/12/2019] [Indexed: 11/17/2022]
Abstract
In this study, micro-arc oxidation (MAO) of aluminum 6061 alloy was carried out within a silicate base electrolyte containing 0.75 g/L of cellulose, and the tribological properties of the coating were investigated. The as-prepared coating was detected by Fourier Transform Infrared Spectroscopy (FTIR), X-ray diffraction (XRD), a scanning electron microscope (SEM) and an energy-dispersive spectrometer (EDS), respectively. The results suggested that cellulose filled in the microcracks and micropores, or it existed by cross-linking with Al3+. In addition, it was found that the cellulose had little effect on the coating hardness. However, the thickness and roughness of the coating were improved with the increase in cellulose concentration. Moreover, the ball-on-disk test showed that the friction coefficient, weight loss and wear rate of the MAO coating decreased with the increase in cellulose concentration. Further, the performances of the coatings obtained in the same electrolyte, under different preserved storage periods, were compared, revealing that the cellulose was uniformly dispersed in the electrolyte and improved the tribological properties of the MAO coating within 30 days.
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Affiliation(s)
- Wei Song
- Faculty of Materials Science and Engineering, XI’AN University of Technology, NO.5 South Jinhua Road, Xi’an 710048, Shaanxi, China; (W.S.); (D.J.)
- School of biological and Chemical Engineering, Nanyang Institute of Technology, NO.80 Changjiang Road, Nanyang 473004, He’nan, China
| | - Bailing Jiang
- Faculty of Materials Science and Engineering, XI’AN University of Technology, NO.5 South Jinhua Road, Xi’an 710048, Shaanxi, China; (W.S.); (D.J.)
| | - Dongdong Ji
- Faculty of Materials Science and Engineering, XI’AN University of Technology, NO.5 South Jinhua Road, Xi’an 710048, Shaanxi, China; (W.S.); (D.J.)
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Sorenson WR, Sullivan D, Baugh S, Collison M, Das R, Erickson A, Harmon T, Heathman S, Ji D, Khandelwal B, Kohn A, Morris S, Norden D, Peng T, Post B, Powers E, Reif K, Schulzki G, Shevchuk C, Solyom A. Determination of Campesterol, Stigmasterol, and Beta-Sitosterol in Saw Palmetto Raw Materials and Dietary Supplements by Gas Chromatography: Collaborative Study. J AOAC Int 2019. [DOI: 10.1093/jaoac/90.3.670] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Abstract
An interlaboratory study was conducted to evaluate a method for the determination of campesterol, stigmasterol, and beta-sitosterol in saw palmetto raw materials and dietary supplements at levels >1.00 mg/100 g based on a 23 g sample. Test samples were saponified at high temperature with ethanolic KOH solution. The unsaponifiable fraction containing phytosterols (campesterol, stigmasterol, and beta-sitosterol) was extracted with toluene. Phytosterols were derivatized to trimethylsilyl ethers and then quantified by gas chromatography with hydrogen flame ionization detection. Twelve blind duplicates, one of which was fortified, were successfully analyzed by 10 collaborators. Recoveries were obtained for the sample that was fortified. The results were 99.8, 111, and 111% for campesterol, stigmasterol, and beta-sitosterol, respectively. For repeatability, the relative standard deviation (RSDr) ranged from 3.93 to 17.3% for campesterol, 3.56 to 22.7% for stigmasterol, and 3.70 to 43.9% for beta-sitosterol. For reproducibility, the RSDR ranged from 7.97 to 22.6%, 0 to 26.7%, and 5.27 to 43.9% for campesterol, stigmasterol, and beta-sitosterol, respectively. Overall, the Study Director approved 5 materials with acceptable HorRat values for campesterol, stigmasterol, and beta-sitosterol ranging from 1.02 to 2.16.
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20
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Szpylka J, DeVries JW, Bhandari S, Bui MH, Ji D, Konings E, Lewis R, Maas P, Parish H, Post B, Schierle J, Sullivan; D, Taylor A, Wang J, Ware G, Woollard D, Wu T. Determination of β-Carotene in Supplements and Raw Materials by Reversed-Phase High Pressure Liquid Chromatography: Collaborative Study. J AOAC Int 2019. [DOI: 10.1093/jaoac/88.5.1279] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Abstract
Twelve laboratories representing 4 countries participated in an interlaboratory study conducted to determine all-trans-β-carotene and total β-carotene in dietary supplements and raw materials. Thirteen samples were sent as blind duplicates to the collaborators. Results obtained from 11 laboratories are reported. For products composed as softgels and tablets that were analyzed for total β-carotene, the reproducibility relative standard deviation (RSDR) ranged from 3.35 to 23.09% and the HorRat values ranged from 1.06 to 3.72. For these products analyzed for trans β-carotene, the reproducibility relative standard deviation (RSDR) ranged from 4.28 to 22.76% and the HorRat values ranged from 0.92 to 3.37. The RSDr and HorRat values in the analysis of a beadlet raw material were substantial and it is believed that the variability within the material itself introduced significant variation in subsampling. The method uses high pressure liquid chromatography (LC) in the reversed-phase mode with visible light absorbance for detection and quantitation. If high levels of α-carotenes are present, a second LC system is used for additional separation and quantitation of the carotene species. It is recommended that the method be adopted as an AOAC Official Method.
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Affiliation(s)
- John Szpylka
- Medallion Laboratories Division of General Mills, 9000 Plymouth Ave N, Minneapolis, MN 55427-3870
| | - Jonathan W DeVries
- Medallion Laboratories Division of General Mills, 9000 Plymouth Ave N, Minneapolis, MN 55427-3870
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Ding LM, Hu HX, Wang YJ, Ji D, Ni LY, Sun ZH, Ding HY. [Tall cell variant of papillary breast carcinoma: report of a case]. Zhonghua Bing Li Xue Za Zhi 2019; 48:815-817. [PMID: 31594051 DOI: 10.3760/cma.j.issn.0529-5807.2019.10.015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- L M Ding
- Department of Pathology, Yi'an District People's Hospital, Tongling City, Anhui Province, Tongling 244100, China
| | - H X Hu
- Department of General Surgery, Yi'an District People's Hospital, Tongling City, Anhui Province, Tongling 244100, China
| | - Y J Wang
- Clinicopathological Center, the Fourth Affiliated Hospital of Anhui Medical University, Hefei 230011, China
| | - D Ji
- Department of Pathology, Yi'an District People's Hospital, Tongling City, Anhui Province, Tongling 244100, China
| | - L Y Ni
- Department of Pathology, Yi'an District People's Hospital, Tongling City, Anhui Province, Tongling 244100, China
| | - Z H Sun
- Department of Pathology, Yi'an District People's Hospital, Tongling City, Anhui Province, Tongling 244100, China
| | - H Y Ding
- Department of Pathology, the Seventh Medical Center of PLA General Hospital, Beijing 100700, China
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Tian C, Shao L, Ji D, Yang J, Xie J, Yin Q, Le H. Synthesis and characterization of tungsten and barium co-doped La2Mo2O9 by sol-gel process for solid oxide fuel cells. J RARE EARTH 2019. [DOI: 10.1016/j.jre.2018.12.013] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Duan X, Yang S, Zhang H, Wu J, Zhang Y, Ji D, Tie L, Boerkoel C. A Novel AMELX Mutation, Its Phenotypic Features, and Skewed X Inactivation. J Dent Res 2019; 98:870-878. [DOI: 10.1177/0022034519854973] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Amelogenesis imperfecta (AI) is a group of genetic disorders of defective dental enamel. Mutation of AMELX encoding amelogenin on the X chromosome is a major cause of AI. Here we report a Chinese family with hypoplastic and hypomineralized AI. Whole exome analysis revealed a novel mutation c.185delC in exon 5 of AMELX causing the frame shift p.Pro62ArgfsTer47 (or p.Pro62Argfs*47). By sequencing of polymerase chain reaction products and T-vector clones, the mutation was confirmed as homozygous in the proband, hemizygous in her father, and heterozygous in her mother. The proband and her father had small and yellowish teeth with thin and rough enamel that was radiographically indistinguishable from the underlying dentin. Scanning electronic microscopy of 1 maternal tooth showed cracks and exposed loosely packed enamel prisms in affected areas. Consistent with a 25:75 skewing of X inactivation in the peripheral blood DNA as measured by androgen receptor allele methylation, the surface of the mother’s tooth had alternating vertical ridges of transparent normal and white chalky enamel in a 34:66 ratio. In summary, this study provides one of the few phenotypic comparisons of hemizygous and homozygous AMELX mutations and suggests that the skewing of X inactivation in AI contributes to the phenotypic variations in heterozygous carriers of X-linked AI.
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Affiliation(s)
- X. Duan
- Department of Oral Biology, Clinic of Oral Rare and Genetic Diseases, School of Stomatology, Air Force Military Medical University (the Fourth Military Medical University), Xi’an, China
| | - S. Yang
- Department of Oral Biology, Clinic of Oral Rare and Genetic Diseases, School of Stomatology, Air Force Military Medical University (the Fourth Military Medical University), Xi’an, China
| | - H. Zhang
- Department of Oral Biology, Clinic of Oral Rare and Genetic Diseases, School of Stomatology, Air Force Military Medical University (the Fourth Military Medical University), Xi’an, China
| | - J. Wu
- Department of Prosthodontic, School of Stomatology, Air Force Military Medical University (the Fourth Military Medical University), Xi’an, China
| | - Y. Zhang
- Department of Oral Biology, Clinic of Oral Rare and Genetic Diseases, School of Stomatology, Air Force Military Medical University (the Fourth Military Medical University), Xi’an, China
| | - D. Ji
- Department of Oral Biology, Clinic of Oral Rare and Genetic Diseases, School of Stomatology, Air Force Military Medical University (the Fourth Military Medical University), Xi’an, China
| | - L. Tie
- Department of Oral Biology, Clinic of Oral Rare and Genetic Diseases, School of Stomatology, Air Force Military Medical University (the Fourth Military Medical University), Xi’an, China
| | - C.F. Boerkoel
- Department of Medical Genetics, Children’s and Women’s Health Centre of BC, University of British Columbia, Vancouver, BC, Canada
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Li Q, Luo L, Lu X, Ji X, Ji D, Feng H, Jiang S. PROTEOMIC ANALYSIS OF SERUM PROTEINS AT THE ONSET OF ARDS IN PATIENTS. Chest 2019. [DOI: 10.1016/j.chest.2019.02.366] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022] Open
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Chang J, Hu Z, Ji D, Chuai S, Shen W, Cao J, Wang J, Wu X. JCSE01.11 Dynamic ctDNA Monitoring Revealed Novel Resistance Mechanisms and Response Predictors of Osimertinib Treatment in East Asian NSCLC Patients. J Thorac Oncol 2018. [DOI: 10.1016/j.jtho.2018.08.219] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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26
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Chang J, Hu Z, Ji D, Chuai S, Shen W, Cao J, Wang J, Wu X. P2.01-16 Dynamic ctDNA Monitoring Revealed Novel Resistance Mechanisms and Response Predictors of Osimertinib Treatment in East Asian NSCLC Patients. J Thorac Oncol 2018. [DOI: 10.1016/j.jtho.2018.08.1070] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Shen L, Cao J, Gong J, Ji D, Qin Z, Dai H, Wu K, Xu J, Yang J. Preliminary safety, pharmacokinetics (PK) and efficacy results from a phase I study of CS1001, an anti-programmed death ligand-1 (PD-L1) monoclonal antibody (mAb) in patients (pts) with advanced tumors. Ann Oncol 2018. [DOI: 10.1093/annonc/mdy288.038] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Ji D, Cheng J, Zhao J, Gui XZ. [The prevalence of allergy-related symptoms and their risk factorinvestigation in early life]. Lin Chung Er Bi Yan Hou Tou Jing Wai Ke Za Zhi 2018; 30:948-951. [PMID: 29771061 DOI: 10.13201/j.issn.1001-1781.2016.12.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 02/07/2016] [Indexed: 11/12/2022]
Abstract
Objective:The aim of this study is to investigate the incidence of allergy-related symptoms and the associated risk factors.Method:There were 205 children aged 3 to 4 years old recruited for this study.Questionnaires on skin,wheezing and rhinitis symptoms were answered,and total IgE and specific IgE in serum against house dust mite extracts were tested.Logistic regression analysis with which we calculated odds ratio(OR) and 95% confidence interval(95%CI) were used for risk factor analysis.Result:Questionnaire results show that the reported history of symptoms was 43%(88 cases) for lactation eczema and 25%(51 cases) for wheezing.The currently reported symptoms was 19%(38 cases) for frequent skin rashes,16% (33 cases) for frequent wheezing and 46%(95 cases) for rhinitis symptoms.There are 33% (68 cases) of the children reported with no symptoms currently.The lactation eczema history(OR[95%CI]:2.76[1.10-3.40],P<0.05)and wheezing history(OR[95%CI]:2.40[1.22-4.73],P<0.01)are both the risk factors for developing rhinitis symptoms.Serology test shows that house dust mite IgE prevalence is 24%,which is the risk factor developing rhinitis symptom(OR[95%CI]:2.10[1.09-4.07],P<0.05).But it has nothing to do with wheezing symptom.Conclusion:Lactation eczema and house dust mite sensitization are the risk factors for developing respiratory diseases in early childhood.The house dust mite allergic respiratory symptom starts with rhinitis symptom.
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Affiliation(s)
- D Ji
- Department of Otolaryngology Head and Neck Surgry,the Second People's Hospital of Wuhu,Wuhu,241000,China
| | - J Cheng
- Department of Otolaryngology Head and Neck Surgry,the Second People's Hospital of Wuhu,Wuhu,241000,China
| | - J Zhao
- Department of Otolaryngology Head and Neck Surgry,the Second People's Hospital of Wuhu,Wuhu,241000,China
| | - X Z Gui
- Department of Otolaryngology Head and Neck Surgry,the Second People's Hospital of Wuhu,Wuhu,241000,China
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Gong D, Ji D, Ren B, Tao J, Xu B, Ronco C, Li L. Significant Decrease in Dialysate Albumin Concentration during Molecular Adsorbent Recirculating System (M.A.R.S.) Therapy. Int J Artif Organs 2018; 31:333-9. [PMID: 18432590 DOI: 10.1177/039139880803100410] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
Aim The molecular adsorbent recirculating system (M.A.R.S.) is widely used as liver support therapy in patients with hepatic dysfunction. The goal of this study was to measure changes in dialysate albumin and bilirubin concentrations during clinical MARS treatments. Methods Eight patients with acute liver dysfunction and hyperbilirubinemia were enrolled in this study. Five of them received a total of 10 treatments with MARS, in which 600 mL of 20% human albumin was used as dialysate, continuously regenerated by two adsorbent columns in the circuit. Three patients received 4 treatments of a modified MARS, in which the two adsorbent columns were bypassed in the first course for 4 h, and then connected to the circuit in the second course for another 4 h. The total, conjugated and unconjugated bilirubin (TB, CB, UCB) and albumin concentrations in serum and albumin dialysate were dynamically measured, and the adsorbent column inlet pressures were recorded during each session. In one session, dialysate albumin levels were measured during the priming process, at the time points prior to the priming process, immediately after priming, and at the end of the treatment. Results During MARS therapies, the reduction ratio of serum TB, CB and UCB was 26.6±9.0%, 29.5±9.6% and 14.8±12.3%, respectively. The molar ratio of TB/albumin in serum was approximately 20-fold higher than dialysate at all time points. A significant albumin concentration decrease from baseline in the dialysate was found (mean±SD, 34.6±16.6%). For the first four hours of modified treatments, in which only albumin dialysis without albumin regeneration by adsorbent columns was performed, the dialysate albumin decrease was substantially smaller (mean, 8.3±1.5%). After switching to standard MARS, there was a further decrease in the dialysate albumin concentration of 35.1±14.5%. In one session, dialysate albumin concentrations were measured during the priming process, and levels decreased from 196.9 g/L to 144.4 g/L. Adsorber inlet pressure increased from 40±10mmHg at the start of priming to 150±50mmHg at the end of priming, and further increased to 340±100mmHg at the end of treatment. Conclusion There is a significant reduction in dialysate albumin concentration during MARS therapy. Binding of albumin to the adsorbent columns used for albumin regeneration is largely responsible for this decrease.
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Affiliation(s)
- D. Gong
- Research Institute of Nephrology, Jinling Hospital, Nanjing University School of Medicine, Nanjing - P.R. China
| | - D. Ji
- Research Institute of Nephrology, Jinling Hospital, Nanjing University School of Medicine, Nanjing - P.R. China
| | - B. Ren
- Research Institute of Nephrology, Jinling Hospital, Nanjing University School of Medicine, Nanjing - P.R. China
| | - J. Tao
- Research Institute of Nephrology, Jinling Hospital, Nanjing University School of Medicine, Nanjing - P.R. China
| | - B. Xu
- Research Institute of Nephrology, Jinling Hospital, Nanjing University School of Medicine, Nanjing - P.R. China
| | - C. Ronco
- Department of Nephrology, Dialysis and Transplantation, San Bortolo Hospital - International Renal Research Institute Vicenza (IRRIV), Vicenza - Italy
| | - L. Li
- Research Institute of Nephrology, Jinling Hospital, Nanjing University School of Medicine, Nanjing - P.R. China
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Tao J, Gong D, Ji D, Xu B, Liu Z, Li L. Improvement of Monocyte Secretion Function in a Porcine Pancreatitis Model by Continuous Dose-Dependent Veno-Venous Hemofiltration. Int J Artif Organs 2018; 31:716-21. [PMID: 18825644 DOI: 10.1177/039139880803100805] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Objective Monocyte and its secreted cytokines play a crucial role in the process of severe acute pancreatitis (SAP). It has been known that continuous veno-venous hemofiltration (CVVH) can partially attenuate the inflammatory process by removal of cytokines, but the effect of CVVH on monocyte secretion function remains unknown. This study investigated the effect of different doses of CVVH on monocyte secretion function as well as the plasma cytokine profile in a SAP porcine model. Methods After successful induction of SAP by pressure-controlled (100 mmHg), intraductal injection of sodium taurocholate (4%, 1 ml/kg) and trypsin (2 U/kg), 24 swine were randomly assigned to 3 groups. Swine in group I (n=8) serving as SAP controls received only standard medical therapy (SMT). Besides SMT, swine in two other groups received zero-balanced CVVH, one hour after the induction of SAP, with low volume fluid exchange (group II, n=8, ultrafiltration rate (UFR) 20 ml/kg/h, LV-CVVH) or high volume (group III, n=8, UFR 100 ml/kg/h, HV-CVVH). Using heparin as anticoagulant, the filter (AN69, Hospal, Lyon, France) was changed every 24 hours. Monocytes were isolated from porcine blood at various timepoints for detection of cytokine secretion (interleukin-6, IL-6; interleukin-10, IL-10; tumor necrosis-α, TNF-α) after LPS stimulus; plasma cytokines were measured simultaneously. Results CVVH showed a dose-dependent beneficial effect on the animals’ survival time. In control animals, plasma pro-inflammatory cytokine levels exhibited a double-phase fluctuation after SAP induction: IL-6 and TNF-α rapidly increased to a peak level within 6–12 hours, then dropped to very low level in the late stage. Unlike pro-inflammatory cytokines, the plasma level of anti-inflammatory cytokine IL-10 reached a plateau within 6–12 hours but dropped little. In CVVH-treated animals, the peak-nadir patterns of 3 cytokines were all flattened, most prominently in the HV-CVVH group. Similarly to plasma cytokine patterns, the monocyte ex vivo response to LPS stimulus showed an over-production of cytokines within 6–12 hours, but low production in the late stage. Although unable to totally prevent the abnormality of the monocyte secretion function, CVVH showed a dose-dependent ameliorative effect on it. Conclusions Monocytes are over-reactive to stimulus in the early stage of SAP, accompanied by a high level of plasma cytokines, and hypo-reactive to stimulus in the late stage of SAP, accompanied with a low level of plasma cytokines. CVVH treatment has a dose-dependent improvement effect on monocyte responsiveness.
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Affiliation(s)
- J. Tao
- Research Insititute of Nephrology, Jingling Hospital, Nanjing University School of Medicine, Nanjing - China
| | - D. Gong
- Research Insititute of Nephrology, Jingling Hospital, Nanjing University School of Medicine, Nanjing - China
| | - D. Ji
- Research Insititute of Nephrology, Jingling Hospital, Nanjing University School of Medicine, Nanjing - China
| | - B. Xu
- Research Insititute of Nephrology, Jingling Hospital, Nanjing University School of Medicine, Nanjing - China
| | - Z. Liu
- Research Insititute of Nephrology, Jingling Hospital, Nanjing University School of Medicine, Nanjing - China
| | - L. Li
- Research Insititute of Nephrology, Jingling Hospital, Nanjing University School of Medicine, Nanjing - China
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Xia Z, Lv F, Xue K, Zhang Q, Ji D, Cao J, Hong X, Guo Y. PEGYLATED LIPOSOMAL DOXORUBICIN COMBINED WITH CYCLOPHOSPHAMIDE, VINCRISTINE/VINDESINE, AND PREDNISONE IN PATIENTS WITH AGGRESSIVE T-CELL LYMPHOMA: PRELIMINARY RESULTS OF APHASE II STUDY. Hematol Oncol 2017. [DOI: 10.1002/hon.2439_162] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Z. Xia
- Medical Oncology; Fudan University Shanghai Cancer Center; Shanghai China
| | - F. Lv
- Medical Oncology; Fudan University Shanghai Cancer Center; Shanghai China
| | - K. Xue
- Medical Oncology; Fudan University Shanghai Cancer Center; Shanghai China
| | - Q. Zhang
- Medical Oncology; Fudan University Shanghai Cancer Center; Shanghai China
| | - D. Ji
- Medical Oncology; Fudan University Shanghai Cancer Center; Shanghai China
| | - J. Cao
- Medical Oncology; Fudan University Shanghai Cancer Center; Shanghai China
| | - X. Hong
- Medical Oncology; Fudan University Shanghai Cancer Center; Shanghai China
| | - Y. Guo
- Medical Oncology; Fudan University Shanghai Cancer Center; Shanghai China
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Li C, Ma X, Pan Z, Lv F, Xia Z, Xue K, Zhang Q, Ji D, Cao J, Hong X, Guo Y. Consolidation radiotherapy does not improve the outcome as compared with chemotherapy alone in patients with limited stage diffuse large B-cell lymphoma of Waldeyer's ring. Hematol Oncol 2017. [DOI: 10.1002/hon.2439_76] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- C. Li
- Department of Medical Oncology; Fudan University Shanghai Cancer Center; Shanghai China
| | - X. Ma
- Department of Radiation Oncology; Fudan University Shanghai Cancer Center; Shanghai China
| | - Z. Pan
- Department of Radiation Oncology; Fudan University Shanghai Cancer Center; Shanghai China
| | - F. Lv
- Department of Medical Oncology; Fudan University Shanghai Cancer Center; Shanghai China
| | - Z. Xia
- Department of Medical Oncology; Fudan University Shanghai Cancer Center; Shanghai China
| | - K. Xue
- Department of Medical Oncology; Fudan University Shanghai Cancer Center; Shanghai China
| | - Q. Zhang
- Department of Medical Oncology; Fudan University Shanghai Cancer Center; Shanghai China
| | - D. Ji
- Department of Medical Oncology; Fudan University Shanghai Cancer Center; Shanghai China
| | - J. Cao
- Department of Medical Oncology; Fudan University Shanghai Cancer Center; Shanghai China
| | - X. Hong
- Department of Medical Oncology; Fudan University Shanghai Cancer Center; Shanghai China
| | - Y. Guo
- Department of Medical Oncology; Fudan University Shanghai Cancer Center; Shanghai China
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Lv F, Xia Z, Xue K, Zhang Q, Ji D, Cao J, Hong X, Guo Y. Preliminary results of a phase II study using response-adapted therapy for limited-stage diffuse large B-cell lymphoma based on interim PET/CT. Hematol Oncol 2017. [DOI: 10.1002/hon.2439_34] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- F. Lv
- Medical Oncology; Fudan University Shanghai Cancer Center; Shanghai China
| | - Z. Xia
- Medical Oncology; Fudan University Shanghai Cancer Center; Shanghai China
| | - K. Xue
- Medical Oncology; Fudan University Shanghai Cancer Center; Shanghai China
| | - Q. Zhang
- Medical Oncology; Fudan University Shanghai Cancer Center; Shanghai China
| | - D. Ji
- Medical Oncology; Fudan University Shanghai Cancer Center; Shanghai China
| | - J. Cao
- Medical Oncology; Fudan University Shanghai Cancer Center; Shanghai China
| | - X. Hong
- Medical Oncology; Fudan University Shanghai Cancer Center; Shanghai China
| | - Y. Guo
- Medical Oncology; Fudan University Shanghai Cancer Center; Shanghai China
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Cao J, Ji D, Shen W, Wang Q, Liu Y, Lu D, Sturm I, Huang F, Cleton A. 193P A phase 1 study evaluating the pharmacokinetics (PK), safety, and efficacy of regorafenib (REG) in Chinese patients with advanced, refractory solid tumors. Ann Oncol 2016. [DOI: 10.1093/annonc/mdw581.026] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Cao J, Li J, Ji D, Shen W, Jiang L, Ma X, Pang J, Kanehisa A, Legrand F, Pallis A, Paux G, Robert R, Chen X, Letecheur P, Qiang L, Ding J. 126O A phase I study evaluating the safety, efficacy, pharmacokinetics and pharmacodynamics of AL3810 in advanced solid tumors. Ann Oncol 2015. [DOI: 10.1093/annonc/mdv521.02] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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36
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Ji D, Sha H, cao Y. Epigenetic assessment of polar body as oocyte genome replacement for mitochondrial donation. Fertil Steril 2015. [DOI: 10.1016/j.fertnstert.2015.07.054] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Ding Z, Wu H, Zhang J, Huang G, Ji D. MicroRNAs as novel biomarkers for pancreatic cancer diagnosis: a meta-analysis based on 18 articles. Tumour Biol 2014; 35:8837-48. [PMID: 24880590 DOI: 10.1007/s13277-014-2133-4] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2014] [Accepted: 05/20/2014] [Indexed: 02/06/2023] Open
Abstract
Dysregulated microRNAs (miRNAs) have been reported to be associated with pancreatic cancer (PaC), suggesting that they may serve as useful novel diagnostic biomarkers for PaC. Various studies have been performed to investigate the diagnostic value of miRNAs for PaC but have obtained conflicting results. Therefore, this meta-analysis aims to comprehensively and quantitatively evaluate the potential diagnostic value of miRNAs for PaC. We systematically searched PubMed, Embase, Google Scholar, Cochrane Library, and Chinese National Knowledge Infrastructure for publications concerning the diagnostic value of miRNAs for PaC without language restriction. The quality of each study was scored using the revised Quality Assessment of Diagnostic Accuracy Studies (QUADAS-2). The summary receiver operator characteristic curve and other parameters were applied to check the overall test performance. Heterogeneity was tested with the I (2) test and publication bias was tested with the Deek's funnel plot asymmetry test. This meta-analysis included 18 articles with a total of 2,036 patients and 1,444 controls. The pooled sensitivity was 82 % (95 % CI, 78-86 %); the specificity was 77 % (95 % CI, 73-81 %); the PLR was 3.6 (95 % CI, 3.0-4.4); the NLR was 0.23 (95 % CI, 0.18-0.29); the DOR was 16 (95 % CI, 10-24); and the AUC was 0.86 (95 % CI, 0.83-0.89). Subgroups analyses were also performed and revealed that there were significant differences between some subgroups: the multiple-miRNAs profiling-based assays, non-blood-based assays, and healthy control-based studies all showed higher accuracies in diagnosing PaC than that of their counterparts. This meta-analysis suggests that the use of miRNAs has potential diagnostic value with a relatively high sensitivity and specificity for PaC, particularly the use of multiple miRNAs for discriminating PaC patients from healthy individuals. More prospective studies on the diagnostic value of miRNAs for PaC are needed in the future.
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Affiliation(s)
- Zhongyang Ding
- Department of General Surgery, Wuxi People's Hospital of Nanjing Medical University, No. 299, Qingyang Road, Wuxi, 214023, China
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Zhou H, Ma H, Wei W, Ji D, Song X, Sun J, Zhang J, Jia L. B4GALT family mediates the multidrug resistance of human leukemia cells by regulating the hedgehog pathway and the expression of p-glycoprotein and multidrug resistance-associated protein 1. Cell Death Dis 2013; 4:e654. [PMID: 23744354 PMCID: PMC3698553 DOI: 10.1038/cddis.2013.186] [Citation(s) in RCA: 57] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
β-1, 4-Galactosyltransferase gene (B4GALT) family consists of seven members, which encode corresponding enzymes known as type II membrane-bound glycoproteins. These enzymes catalyze the biosynthesis of different glycoconjugates and saccharide structures, and have been recognized to be involved in various diseases. In this study, we sought to determine the expressional profiles of B4GALT family in four pairs of parental and chemoresistant human leukemia cell lines and in bone marrow mononuclear cells (BMMC) of leukemia patients with multidrug resistance (MDR). The results revealed that B4GALT1 and B4GALT5 were highly expressed in four MDR cells and patients, altered levels of B4GALT1 and B4GALT5 were responsible for changed drug-resistant phenotype of HL60 and HL60/adriamycin-resistant cells. Further data showed that manipulation of these two gene expression led to increased or decreased activity of hedgehog (Hh) signaling and proportionally mutative expression of p-glycoprotein (P-gp) and MDR-associated protein 1 (MRP1) that are both known to be related to MDR. Thus, we propose that B4GALT1 and B4GALT5, two members of B4GALT gene family, are involved in the development of MDR of human leukemia cells, probably by regulating the activity of Hh signaling and the expression of P-gp and MRP1.
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Affiliation(s)
- H Zhou
- College of Laboratory Medicine, Dalian Medical University, Dalian 116044, Liaoning Province, China
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Kamalden TA, Ji D, Osborne NN. Rotenone-Induced Death of RGC-5 Cells is Caspase Independent, Involves the JNK and p38 Pathways and is Attenuated by Specific Green Tea Flavonoids. Neurochem Res 2012; 37:1091-101. [DOI: 10.1007/s11064-012-0713-5] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2011] [Revised: 01/16/2012] [Accepted: 01/19/2012] [Indexed: 12/21/2022]
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Liu Y, Wang C, Zhong Y, Li X, Dai J, Ren X, Xu Z, Li L, Yao Z, Ji D, Wang L, Zhang L, Wong VW‐S, Zoulim F, Xu D. Genotypic resistance profile of hepatitis B virus (HBV) in a large cohort of nucleos(t)ide analogue-experienced Chinese patients with chronic HBV infection. J Viral Hepat 2011; 18:e29-39. [PMID: 21392168 PMCID: PMC7167191 DOI: 10.1111/j.1365-2893.2010.01360.x] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
The study investigated the hepatitis B virus (HBV) genotypic resistance profile in 1803 nucleos(t)ide analogue (NA)-experienced Chinese patients with chronic HBV infection. Serum HBV DNA was extracted, and the reverse transcriptase region was analysed by a high-sensitive direct PCR sequencing and verified by clonal sequencing if necessary. Drug-resistant mutations were detected in 560 of the 1803 patients, including 214 of 490 patients who received lamivudine (LAM), 35 of 428 patients who received adefovir (ADV), five of 18 patients who received telbivudine and 306 of 794 patients who received various sequential/combined NA therapies. ADV-resistant mutations were detected in 36 of 381 patients who received LAM and then switched-to ADV in contrast to one of 82 patients who received ADV add-on LAM. Entecavir (ETV)-resistant mutations were detected not only in LAM- and ETV-treated patients but also in LAM-treated ETV-naïve patients. Double mutations rtM204I and rtL180M were detected more frequently in genotype C than in genotype B virus, and patients infected with this mutant had higher alanine transaminase levels than those infected with mutant containing the rtM204I substitution alone. Multidrug-resistant HBV strains were identified in eight patients, including two novel strains with mutational patterns rtL180M + A181V + S202G + M204V + N236T and rtL180M + S202G + M204V + N236T. The results provide new information on HBV genotypic resistance profiles in a large cohort of Chinese patients with chronic HBV infection and may have important clinical implication for HBV drug resistance management in China.
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Affiliation(s)
- Y. Liu
- Viral Hepatitis Research Laboratory, Institute of Infectious Diseases, Beijing 302 Hospital, Beijing, China
| | - C. Wang
- Viral Hepatitis Research Laboratory, Institute of Infectious Diseases, Beijing 302 Hospital, Beijing, China
| | - Y. Zhong
- Viral Hepatitis Research Laboratory, Institute of Infectious Diseases, Beijing 302 Hospital, Beijing, China
| | - X. Li
- Viral Hepatitis Research Laboratory, Institute of Infectious Diseases, Beijing 302 Hospital, Beijing, China
| | - J. Dai
- Viral Hepatitis Research Laboratory, Institute of Infectious Diseases, Beijing 302 Hospital, Beijing, China
| | - X. Ren
- Viral Hepatitis Research Laboratory, Institute of Infectious Diseases, Beijing 302 Hospital, Beijing, China
| | - Z. Xu
- Viral Hepatitis Research Laboratory, Institute of Infectious Diseases, Beijing 302 Hospital, Beijing, China
| | - L. Li
- Viral Hepatitis Research Laboratory, Institute of Infectious Diseases, Beijing 302 Hospital, Beijing, China
| | - Z. Yao
- Viral Hepatitis Research Laboratory, Institute of Infectious Diseases, Beijing 302 Hospital, Beijing, China
| | - D. Ji
- Viral Hepatitis Research Laboratory, Institute of Infectious Diseases, Beijing 302 Hospital, Beijing, China
| | - L. Wang
- Viral Hepatitis Research Laboratory, Institute of Infectious Diseases, Beijing 302 Hospital, Beijing, China
| | - L. Zhang
- Viral Hepatitis Research Laboratory, Institute of Infectious Diseases, Beijing 302 Hospital, Beijing, China
| | - V. W. ‐S. Wong
- Department of Medicine and Therapeutics and Institute of Digestive Disease, The Chinese University of Hong Kong, Hong Kong, China
| | - F. Zoulim
- INSERM, U871, Lyon, France,Université Lyon 1, IFR62 Lyon‐Est, Lyon, France,Hospices Civils de Lyon, Hôtel Dieu, Department of Hepatology and Gastroenterology, Lyon, France
| | - D. Xu
- Viral Hepatitis Research Laboratory, Institute of Infectious Diseases, Beijing 302 Hospital, Beijing, China
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Kamalden TA, Ji D, Fawcett RJ, Osborne NN. Genistein blunts the negative effect of ischaemia to the retina caused by an elevation of intraocular pressure. Ophthalmic Res 2010; 45:65-72. [PMID: 20714194 DOI: 10.1159/000313985] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2010] [Accepted: 02/15/2010] [Indexed: 01/24/2023]
Abstract
AIMS Deduce whether the isoflavone genistein blunts the effect of ischaemia to the retina. METHODS Ischaemia was induced in rats by raising the intraocular pressure (120 mm Hg) for 50 min. Genistein (10 mg/kg) was injected intraperitoneally 1 h before and after ischaemia. Seven days after ischaemia, the level of mRNAs for neurofilament light (NF-L), caspase 3, caspase 8, glial fibrillary acidic protein (GFAP), poly-ADP ribose polymerase (PARP), Thy-1 and proteins (GFAP, NF-L, PARP) in whole retinas were determined. NF-L and tubulin proteins in optic nerves were also determined. Retinas were also processed for the localization of choline acetyltransferase (ChAT) and GFAP immunoreactivities. RESULTS Ischaemia caused a significant reduction in ganglion cell proteins in the optic nerve (NF-L and tubulin) and retina (NF-L). Retinal Thy-1 (mRNA and protein) and NF-L (mRNA) were also reduced while mRNAs of caspase 3, caspase 8, PARP and GFAP (also protein) were increased. Changes in the mRNAs and proteins induced by ischaemia were significantly blunted by genistein with the exception of the increase in GFAP and PARP protein/mRNA levels. Ischaemia-induced changes in the localization of ChAT were also clearly attenuated by genistein treatment. CONCLUSIONS Genistein blunts most of the damaging effects caused to the retina by ischaemia.
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Affiliation(s)
- T A Kamalden
- Nuffield Laboratory of Ophthalmology, University of Oxford, Oxford, UK
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Jung SH, Kang KD, Ji D, Fawcett RJ, Safa R, Kamalden TA, Osborne NN. The flavonoid baicalin counteracts ischemic and oxidative insults to retinal cells and lipid peroxidation to brain membranes. Neurochem Int 2008; 53:325-37. [PMID: 18835309 DOI: 10.1016/j.neuint.2008.09.004] [Citation(s) in RCA: 79] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2008] [Revised: 09/04/2008] [Accepted: 09/05/2008] [Indexed: 12/28/2022]
Abstract
The purpose of the present study was to determine whether the flavonoid, baicalin is effective at blunting the negative influence of ischemia/reperfusion to the rat retina in situ and of various insults to a transformed retinal ganglion cells (RGC-5 cells) in culture. Baicalin was administered intraperitoneally just before and after an ischemic insult to retina of one eye of a rat. Ischemia was delivered by raising the intraocular pressure above the systolic blood pressure for 50min. Seven days after ischemia, retinas were analysed for the localisation of various antigens. Retinal extracts were also analysed for various mRNAs. Moreover, the content of specific proteins was deduced in retinal and optic nerve extracts. Also, RGC-5 cells in culture were given one of three different insults, light (1000lx for 2 days), hydrogen peroxide (200microM H(2)O(2) for 24h) or serum deprivation (48h) where cell survival and reactive oxygen species (ROS) formation was assayed. Moreover, a lipid peroxidation assay was used to compare the antioxidant capacity of baicalin with the flavonoid, epigallocatechin gallate (EGCG). Ischemia/reperfusion to the retina affected the localisation of Thy-1 and choline acetyltransferase (ChAT) and the content of various proteins (optic nerve and retina) and mRNAs (retina). Importantly, baicalin statistically blunted most of the effects induced by ischemia/reperfusion. Only the increase in caspase-8 and caspase-3 mRNAs caused by ischemia/reperfusion were unaffected by baicalin treatment. Baicalin also attenuated significantly the negative insult of light, hydrogen peroxide and serum withdrawal to RGC-5 cells. In the lipid peroxidation studies, baicalin was also found to be equally effective as EGCG to act as an antioxidant. Significantly, the negative insult of serum withdrawal on RGC-5 cell survival was blunted by baicalin but not by EGCG revealing the different properties of the two flavonoids.
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Affiliation(s)
- S H Jung
- Nuffield Laboratory of Ophthalmology, Oxford University, John Radcliffe Hospital, Oxford OX3 9DU, UK
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Gong D, Ren B, Ji D, Tao J, Xu B, Liu Z, Li Z. Selective albumin exchange: a novel and simple method to remove bilirubin. Int J Artif Organs 2008; 31:425-30. [PMID: 18609516 DOI: 10.1177/039139880803100508] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
PURPOSE Owing to its non-selectivity, plasma exchange has limited use in the treatment of patients with hepatic failure, although it is effective in removal of protein-bound toxins. This study reports a novel way to perform selective albumin exchange (SAE) by using a secondary plasma separator and aims to study its depurative capacity in the removal of bilirubin. METHOD In ex vivo experiments, the sieving coefficients (SCs) of plasma proteins for two secondary plasma separators, EC20W and EC30W (Asahi Medical, Tokyo, Japan), were measured. The EC20W membrane was chosen for use in clinical treatment because of its higher selectivity in separating albumin from plasma than the EC30W. The SCs of albumin, immunoglobumin G, A and M (IgG, IgA, IgM) for the EC20W were 0.3+/-0.021, 0.017+/-0.012, and 0, respectively. Five inpatients with plasma total bilirubin (TB) more than 200 micromol/L were enrolled in the present study and received a total of 10 SAE therapy sessions. Each session lasted 10 hours. SAE using the EC20W was conducted, making it similar to post-dilution continuous veno-venous hemofiltration (CVVH), with a filtrate rate of 2000 ml/h. Replacement fluid was composed by adding human albumin into conventional CVVH replacement fluid, with a final albumin concentration of 0.6%. During each treatment, the parameters of plasma and filtrate TB, direct bilirubin (DB), indirect bilirubin (IDB), and proteins were dynamically monitored. Hemostasis parameters were measured before and after sessions. RESULTS The reduction ratio of plasma TB, DB, and IDB after a single session was 29.1+/-3.0%, 31.3+/-4.5%, and 18.7+/-10.2%, respectively. The clearance of TB at initiation was 11.1+/-1.3 mL/min and declined to 4.4+/-0.5 ml/min at the end (p<0.01). This decline was accompanied by a reduction in albumin SC from 0.3+/-0.021 to 0.13+/-0.05. The molar ratio of bilirubin to albumin in filtrate was comparable to that in plasma. After a single treatment, plasma protein concentration including total protein, albumin, IgA and IgM remained unaffected, except for globulin and IgG, which were reduced by 11.5+/-7.8% and 11.1+/-2.3%, respectively. An improvement in hemostasis parameters, including plasma fibrinogen, prothrombase time and INR, was found after treatment. No obvious side effects were reported during any of the sessions. CONCLUSION Selective albumin exchange is a simple and effective method to remove bilirubin. However, further studies are required to verify its effects on clinical outcome.
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Affiliation(s)
- D Gong
- Research Institute of Nephrology, Jinling Hospital, Nanjing University School of Medicine, Nanjing - China.
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Liu Y, Bai GQ, Cheng J, Yang Q, Zhang LY, Ji D, Wang JJ. [Cloning of genes transactivated by nonstructural protein 4A of hepatitis C virus.]. Zhonghua Shi Yan He Lin Chuang Bing Du Xue Za Zhi 2006; 20:270-2. [PMID: 17086291] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
BACKGROUND To construct a subtractive cDNA library of genes transactivated by NS4A protein of hepatitis C virus with suppression subtractive hybridization technique (SSH). METHODS The mRNA was isolated from Hep G2 cells transfected pcDNA3.1(-)-NS4A and pcDNA3.1(-) empty vector, respectively, then the cDNA was synthesized. SSH method was employed to analyze the differentially expressed RNA sequence between the two groups. The twice enriched PCR products were subcloned into T/A vectors to set up the subtractive library. Amplification of the library was carried out with E.coli strain JM109. The cDNA was sequenced and analyzed in comparison with those in GenBank with Blast search after PCR. RESULTS The amplified library contained 36 positive clones. Colony PCR showed that 36 clones contained 200-1000 bp inserts. Sequence analysis was performed in 25 clones, and the full length sequences were obtained with bioinformatics method. Altogether 20 kinds of coding sequences were achieved, which consisted of 18 kinds of known and 2 kinds of unknown ones. The obtained sequences may be target genes transactivated by NS4A protein of HCV, among which some genes coding for proteins involved in cell cycle regulation, cell apoptosis, signal transduction pathway and tumour development. CONCLUSION A subtractive library of genes transactivated by NS4A protein of HCV was constructed successfully, which brought some new clues for studying the biological functions and pathogenesis of the viral proteins.
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Affiliation(s)
- Y Liu
- Viral Hepatitis Research Center, Institute of Infectious Diseases, The No.302 Hospital of PLA, Beijing 100039, China
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Zhao L, Yang S, Zhou GQ, Yang J, Ji D, Sabatakos G, Zhu T. Downregulation of cAMP-dependent protein kinase inhibitor gamma is required for BMP-2-induced osteoblastic differentiation. Int J Biochem Cell Biol 2006; 38:2064-73. [PMID: 16870489 DOI: 10.1016/j.biocel.2006.05.015] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2006] [Revised: 05/11/2006] [Accepted: 05/15/2006] [Indexed: 11/19/2022]
Abstract
Osteoblasts, normally derived from undifferentiated mesenchymal precursor cells, acquire their characteristic phenotypes when induced by various regulatory factors, one of which is bone morphogenetic protein-2 (BMP-2). Our recent studies suggest that expression of cAMP-dependent protein kinase (PKA) inhibitor G (PKIG) is down-regulated as human mesenchymal stromal cells (MSCs) undergo BMP-2-induced osteoblastic differentiation. This raises our hypothesis that the PKA pathway is involved in osteogenesis. In this report, we demonstrated that PKIG in human MSCs and its murine homologue PKA inhibitor gamma (PKIgamma) in murine pre-myoblast C2C12 cells were down-regulated when these cells were treated with BMP-2. On the contrary, the PKA activity of C2C12 cells was increased upon BMP-2 treatment. Overexpression of PKIgamma in C2C12 cells was shown to repress mRNA expression of early osteoblastic markers osterix and type I collagen while inhibiting the PKA activity. This correlated with decreased alkaline phosphatase (ALP) activities. Furthermore, inhibition of the PKA activity using its specific inhibitor KT5720 was found to have the similar effect, whereas 8-Br-cAMP, a specific PKA activator, accelerated BMP-2-induced ALP activities. Finally, this study showed that BMP-2 treatment promoted activities of transcription regulatory elements including cAMP response element (CRE) and activating protein-1 (AP1). This effect of BMP-2 was diminished in PKIgamma-overexpressed C2C12 cells. Taken together, our results indicate that the activation of the PKA pathway may be one of key BMP-2-activated signaling events that lead to osteogenesis and that downregulation of PKIgamma may be prerequisite for the PKA activation during the osteoblastic differentiation of precursor cells.
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Affiliation(s)
- L Zhao
- Nankai University Medical College, Tianjin 300071, China
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Chen YH, Chang CY, Huang SF, Chiu CY, Ji D, Shang NC, Yu YH, Chiang PC, Ku Y, Chen JN. Decomposition of 2-naphthalenesulfonate in aqueous solution by ozonation with UV radiation. Water Res 2002; 36:4144-4154. [PMID: 12405423 DOI: 10.1016/s0043-1354(02)00135-5] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
This study investigates the ozonation of 2-naphthalenesulfonate (2-NS) combined with ultraviolet (UV) radiation. Naphthalenesulfonic acids are of importance as dye intermediates for the dye and textile auxiliary industries. Its derivatives, such as 2-NS, have been found in rivers and tannery effluents causing pollution problems. Thus, the 2-NS is of concern for the aquatic pollution control especially in the surface and waste waters. Ozonation combined with UV radiation is employed for the removal of 2-NS in the aqueous solution. Semibatch ozonation experiments were proceeded under different reaction conditions to study the effects of ozone dosage and UV radiation on the oxidation of 2-NS. The concentrations of 2-NS and sulfate are analyzed at specified time intervals to elucidate the decomposition of 2-NS. In addition, values of pH and oxidation reduction potential are continuously measured in the course of experiments. Total organic carbon is chosen as a mineralization index of the ozonation of 2-NS. The mineralization of 2-NS via the ozonation is remarkably enhanced by the UV radiation. These results can provide useful information for the proper removal of 2-NS in the aqueous solution by the ozonation with UV radiation.
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Affiliation(s)
- Y H Chen
- Graduate Institute of Environmental Engineering, National Taiwan University, Taipei
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Ji D, Gong D, Xie H, Xu B, Liu Y, Li L. A retrospective study of continuous renal replacement therapy versus intermittent hemodialysis in severe acute renal failure. Chin Med J (Engl) 2001; 114:1157-61. [PMID: 11729510] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/22/2023] Open
Abstract
OBJECTIVE To investigate the efficacy of continuous renal replacement therapy (CRRT) versus intermittent hemodialysis (IHD) in patients with severe acute renal failure (ARF). METHODS One hundred and ninety-three severe ARF patients who received renal support between December 1978 and December 1998 were involved in this study. Of them, 101 (52.3%) were treated with CRRT (CRRT group), and 92 (47.7%) with IHD (IHD group). RESULTS Sixty (59.4%) patients in the CRRT group got through the acute phase of disease and 41 (40.6%) patients did not survive while in the IHD group 59 (64.1%) patients survived and 33 (35.9%) patients did not. No significant difference in survival rate was found between the two groups. 24 of 64 patients (37.5%) in the CRRT group with multiple organ dysfunction syndrome (MODS) survived, while in the IHD group, 8 out of 44 (27.3%) survived, their survival rate was much lower than that in the CRRT group. Patients in CRRT group were more severely ill, as manifested by lower mean arterial pressure, higher APACHE II score, more dysfunctioned organs and requiring mechanical ventilation and vasopressor support as compared with patients in the IHD group, CRRT was found to improve hemodynamic stability with a better fluid balance and control of biochemical status, increased nutritional intake and a shorter duration of acute renal failure (P < 0.05). CONCLUSION CRRT perhaps may be the best choice in the treatment of severe ARF patients, for it can offer several distinct advantages compared to IHD. These may contribute to improving the survival rate of ARF patients, particularly those that are critically ill patients.
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Affiliation(s)
- D Ji
- Research Institute of Nephrology, Jingling Hospital, Nanjing University School of Medicine, Nanjing 210002, China.
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Abstract
Nicotine, the main addictive component of tobacco, activates and desensitizes nicotinic acetylcholine receptors (nAChRs). In that way, nicotine alters normal nicotinic cholinergic functions. Among the myriad of psychopharmacological effects that underlie the addiction process, nicotine influences nAChR participation in synaptic plasticity. This influence has particular importance in the mesocorticolimbic dopamine system, which serves during the reinforcement of rewarding behaviors.
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Affiliation(s)
- J A Dani
- Division of Neuroscience, Baylor College of Medicine, Houston, TX 77030, USA.
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Abstract
This study reveals mechanisms in the mouse hippocampus that may underlie nicotinic influences on attention, memory, and cognition. Induction of synaptic plasticity, arising via generally accepted mechanisms, is modulated by nicotinic acetylcholine receptors. Properly timed nicotinic activity at pyramidal neurons boosted the induction of long-term potentiation via presynaptic and postsynaptic pathways. On the other hand, nicotinic activity on interneurons inhibited nearby pyramidal neurons and thereby prevented or diminished the induction of synaptic potentiation. The synaptic modulation was dependent on the location and timing of the nicotinic activity. Loss of these synaptic mechanisms may contribute to the cognitive deficits experienced during Alzheimer's diseases, which is associated with a loss of cholinergic projections and with a decrease in the number of nicotinic receptors.
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Affiliation(s)
- D Ji
- Division of Neuroscience and, Structural and Computational Biology and Molecular Biophysics Program, Baylor College of Medicine, One Baylor Plaza, 77030, Houston, TX, USA.
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Gong D, Ji D, Xie H, Xu B, Liu Y, Li L. [The effects of dialysate and ultrafiltration flow rate on solute clearance during continuous renal replacement therapy]. Zhonghua Nei Ke Za Zhi 2001; 40:183-6. [PMID: 11798577] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/23/2023]
Abstract
OBJECTIVE To study the solute clearance during various forms of continuous renal replacement therapy(CRRT) and test the formulas that allow the prediction of the influence of dialysate and ultrafiltration flow rate on small solute removal during CRRT. METHOD Five patients with acute renal failure were included in the study and were treated by venovenous CRRT using the PRISMA predilution system. Solute clearance of urea nitrogen(UN), creatinine(Cr), uric acid(Ua), phosphate(P) and beta(2)-microglobulin(beta(2)-M) were evaluated during CRRT with different dialysates and ultrafiltration flow rates. RESULTS The determined clearance of small molecular solutes during continuous venovenous hemofiltration (CVVH) and continuous venovenous hemodialysis(CVVHD) was similar with the following formulas: K(UF) = (Q(UF)/60) x Q(B)/(Q(B) + Q(UF)/60) (in CVVH), Kd = Q(D)/60 (in CVVHD), where K is the clearance, Q(B), Q(D) and Q(UF) are blood, dialysate and ultrafiltration flow rates, respectively. There was very significant correlation between calculated values of K(UF) and observed clearances of small solutes such as UN, Cr, Ua and P during CVVH, between calculated values of Kd and observed clearances of UN, Cr, Ua but not P during CVVHD (P < 0.001). Clearances of UN, Cr, Ua and P during CVVHD were greater than those during CVVH, but clearance of beta(2)-M during CVVHD was less than that during CVVH. Interaction between convection and diffusion was found during continuous venovenous hemodiafiltration (CVVHDF). CONCLUSIONS The previous formulas can provide with the prediction of the clearance of small molecular solutes during CVVH and CVVHD. The present results demonstrate that diffusion is more efficient in removing small solutes than convection but less efficient in removing large solutes than convection. There is interaction between convection and diffusion during CVVHDF.
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Affiliation(s)
- D Gong
- Research Institute of Nephrology, Jinling Hospital, Nanjing 210002, China
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