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1.
Nano Lett ; 23(20): 9547-9554, 2023 Oct 25.
Article in English | MEDLINE | ID: mdl-37816225

ABSTRACT

Exploring ultrafast carrier dynamics is crucial for the materials' fundamental properties and device design. In this work, we employ time- and energy-resolved photoemission electron microscopy with tunable pump wavelengths from visible to near-infrared to reveal the ultrafast carrier dynamics of the elemental semiconductor tellurium. We find that two discrete sub-bands around the Γ point of the conduction band are involved in excited-state electron ultrafast relaxation and reveal that hot electrons first go through ultrafast intra sub-band cooling on a time scale of about 0.3 ps and then transfer from the higher sub-band to the lower one on a time scale of approximately 1 ps. Additionally, theoretical calculations reveal that the lower one has flat-band characteristics, possessing a large density of states and a long electron lifetime. Our work demonstrates that TR- and ER-PEEM with broad tunable pump wavelengths are powerful techniques in revealing the details of ultrafast carrier dynamics in time and energy domains.

2.
Article in English | MEDLINE | ID: mdl-38064609

ABSTRACT

Objective: To investigate the efficacy and safety of low-dose radiotherapy in treating eosinophilic lymphoid granuloma. Method: This study included a total of 20 patients diagnosed with eosinophilic lymphoid granuloma. All patients underwent low-dose three-dimensional conformal intensity-modulated radiotherapy for their lesions. We analyzed the control status of the lesions and any adverse reactions related to radiotherapy. Results: The overall effectiveness of low-dose radiotherapy in treating eosinophilic lymphoid granuloma was 90%. The incidence of grade I and grade II adverse reactions induced by radiotherapy was 70% and 30%, respectively. Over a median follow-up period of 23.6 months, all patients showed controlled lesions within the target delineation of radiotherapy. After radiotherapy, four patients experienced occasional pruritus, and one patient had a recurrence outside the target area three years later. No long-term severe adverse reactions related to radiotherapy were observed during the follow-up period. Conclusions: Low-dose radiotherapy demonstrates an apparent therapeutic effect on eosinophilic lymphoid granuloma with acceptable adverse reactions.

3.
Cardiovasc Drugs Ther ; 36(1): 113-120, 2022 02.
Article in English | MEDLINE | ID: mdl-33394360

ABSTRACT

PURPOSE: To determine the association between low molecular weight heparin (LMWH) use and mortality in hospitalized COVID-19 patients. METHODS: We conducted a retrospective study of patients consecutively enrolled from two major academic hospitals exclusively for COVID-19 in Wuhan, China, from January 26, 2020, to March 26, 2020. The primary outcome was adjusted in-hospital mortality in the LMWH group compared with the non-LMWH group using the propensity score. RESULTS: Overall, 525 patients with COVID-19 enrolled with a median age of 64 years (IQR 19), and 49.33% men. Among these, 120 (22.86%) were treated with LMWH. Compared with the non-LMWH group, the LMWH group was more likely to be older and male; had a history of hypertension, diabetes, coronary heart disease (CHD), or stroke; and had more severe COVID-19 parameters such as higher inflammatory cytokines or D-dimer. Compared with non-LMWH group, LMWH group had a higher unadjusted in-hospital mortality rate (21.70% vs. 11.10%; p = 0.004), but a lower adjusted mortality risk (adjusted odds ratio [OR], 0.20; 95% CI, 0.09-0.46). A propensity score-weighting analysis demonstrated similar findings (adjusted OR, 0.18; 95% CI, 0.10-0.30). Subgroup analysis showed a significant survival benefit among those who were severely (adjusted OR, 0.07; 95% CI, 0.02-0.23) and critically ill (adjusted OR, 0.32; 95% CI, 0.15-0.65), as well as among the elderly patients' age > 65, IL-6 > 10 times upper limit level, and D-dimer > 5 times upper limit level. CONCLUSIONS: Among hospitalized COVID-19 patients, LMWH use was associated with lower all-cause in-hospital mortality than non-LMWH users. The survival benefit was particularly significant among more severely ill patients.


Subject(s)
Anticoagulants/therapeutic use , COVID-19 Drug Treatment , Heparin, Low-Molecular-Weight/therapeutic use , Hospitalization , Aged , Aged, 80 and over , Anticoagulants/adverse effects , Blood Coagulation/drug effects , COVID-19/diagnosis , COVID-19/mortality , China/epidemiology , Comorbidity , Female , Hemorrhage/chemically induced , Heparin, Low-Molecular-Weight/adverse effects , Hospital Mortality , Humans , Male , Middle Aged , Retrospective Studies , Risk Assessment , Risk Factors , Severity of Illness Index , Time Factors , Treatment Outcome
4.
J Med Virol ; 93(3): 1573-1580, 2021 03.
Article in English | MEDLINE | ID: mdl-32897543

ABSTRACT

To explore the role of thymosin drugs in the prevention of novel coronavirus disease (COVID-19), we analyzed the preventive effects of different medication timings on health medical staff, and then provided recommendations for pharmaceutical monitoring of thymus drugs. The hospital-based retrospective study analyzed 435 medical staffers, treated with or without thymosin drugs as preventive medicines in our hospital of Wuhan City, from January 25 to March 25, 2020. For the prophylactics, the medical staff was prevented from pre-exposure prophylaxis (risk prevention of exposure to COVID-19 patients before using thymosin drugs) and postexposure prophylaxis (risk prevention of exposure to COVID-19 patients after using thymosin drugs). The effectiveness and safety of thymosin drugs were studied in the prevention and control of COVID-19 application, in real-world data research for the application of the drug for COVID- 19. In a similar exposure environment, compared to medical staffers who did not take preventive medicine, the use of thymosin drugs, before exposure and after exposure had an insignificant effect, and the adverse drug reaction (ADR) was increased, especially when thymosin drugs were used together with α-interferon.


Subject(s)
COVID-19/prevention & control , SARS-CoV-2/drug effects , Thymosin/therapeutic use , Adolescent , Adult , Antiviral Agents/therapeutic use , Female , Hospitals , Humans , Male , Medical Staff , Middle Aged , Pre-Exposure Prophylaxis/methods , Retrospective Studies , Young Adult
5.
J Med Virol ; 93(2): 854-862, 2021 02.
Article in English | MEDLINE | ID: mdl-32687223

ABSTRACT

To evaluate the efficacy of angiotensin-converting enzyme inhibitors (ACEIs) and angiotensin receptor blockers (ARBs) vs calcium channel blockers (CCBs) on the progression of Corona Virus Disease 2019 (COVID-19) patients with hypertension in Wuhan. This retrospective single-center case series analyzed COVID-19 patients with hypertension, treated with ACEIs/ARBs or CCBs at the Tongji Hospital of Wuhan City, China from 25th January to 15th March 2020. After propensity score matching analysis, 76 patients were selected into two groups. Univariate and multivariable analyses were conducted to determine factors related to improvement measures and outcome measures by Cox proportional hazard regression models. Among 157 patients with confirmed COVID-19 combined hypertension, including 73 males and 84 females, a median age of 67.28 ± 9.11 vs 65.39 ± 10.85 years. A univariable analysis indicated that clinical classification, lymphocyte count, and interleukin-2 receptor were associated with a lengthened negative time of nucleic acid, with a significant difference between two groups (P = .036). Furthermore, we found no obvious difference in nucleic acid conversion time between ACEIs/ARBs and CCBs groups (hazard ratio [HR]: 0.70; 95% confidence interval [CI]: [0.97, 3.38]; P = .18) in the multivariable analysis as well as chest computed tomography improved time (HR: 0.73; 95% CI [0.45, 1.2]; P = .87), and hospitalization time between ACEIs/ARBs and CCBs groups (HR: 1.06; 95% CI [0.44, 1.1]; P = .83). Our study provided additional evidence of no obvious difference in progress and prognosis between ACEIs/ACEIs and CCBs group, which may suggest ACEIs/ARBs may have scarcely influence on increasing the clinical severe situations of COVID-19 patients with hypertension.


Subject(s)
Angiotensin Receptor Antagonists/therapeutic use , Angiotensin-Converting Enzyme Inhibitors/therapeutic use , COVID-19 Drug Treatment , Calcium Channel Blockers/therapeutic use , Hypertension/epidemiology , Aged , COVID-19/epidemiology , China , Disease Progression , Female , Hospitalization/statistics & numerical data , Humans , Hypertension/virology , Male , Middle Aged , Propensity Score , Proportional Hazards Models , Retrospective Studies
6.
J Med Virol ; 92(7): 814-818, 2020 07.
Article in English | MEDLINE | ID: mdl-32253759

ABSTRACT

Tocilizumab (TCZ), a monoclonal antibody against interleukin-6 (IL-6), emerged as an alternative treatment for COVID-19 patients with a risk of cytokine storms recently. In the present study, we aimed to discuss the treatment response of TCZ therapy in COVID-19 infected patients. The demographic, treatment, laboratory parameters of C-reactive protein (CRP) and IL-6 before and after TCZ therapy and clinical outcome in the 15 COVID-19 patients were retrospectively assessed. Totally 15 patients with COVID-19 were included in this study. Two of them were moderately ill, six were seriously ill and seven were critically ill. The TCZ was used in combination with methylprednisolone in eight patients. Five patients received the TCZ administration twice or more. Although TCZ treatment ameliorated the increased CRP in all patients rapidly, for the four critically ill patients who received an only single dose of TCZ, three of them (No. 1, 2, and 3) still dead and the CRP level in the rest one patient (No. 7) failed to return to normal range with a clinical outcome of disease aggravation. Serum IL-6 level tended to further spiked firstly and then decreased after TCZ therapy in 10 patients. A persistent and dramatic increase of IL-6 was observed in these four patients who failed treatment. TCZ appears to be an effective treatment option in COVID-19 patients with a risk of cytokine storms. And for these critically ill patients with elevated IL-6, the repeated dose of the TCZ is recommended.


Subject(s)
Antibodies, Monoclonal, Humanized/therapeutic use , Betacoronavirus/pathogenicity , Coronavirus Infections/drug therapy , Coronavirus Infections/physiopathology , Disease Outbreaks , Immunologic Factors/therapeutic use , Methylprednisolone/therapeutic use , Pneumonia, Viral/drug therapy , Pneumonia, Viral/physiopathology , Aged , Aged, 80 and over , Betacoronavirus/drug effects , Biomarkers/blood , C-Reactive Protein/metabolism , COVID-19 , China/epidemiology , Coronavirus Infections/diagnosis , Coronavirus Infections/mortality , Drug Administration Schedule , Drug Therapy, Combination , Female , Humans , Interleukin-6/blood , Male , Middle Aged , Pandemics , Pneumonia, Viral/diagnosis , Pneumonia, Viral/mortality , Retrospective Studies , SARS-CoV-2 , Severity of Illness Index , Survival Analysis , Treatment Outcome
7.
J Med Virol ; 92(11): 2523-2527, 2020 11.
Article in English | MEDLINE | ID: mdl-32779755

ABSTRACT

Hydroxychloroquine (HCQ) garnered scientific attention in early February following publication of reports showing in vitro activity of chloroquine (CQ) against coronavirus disease 2019 (COVID-19). While studies are mixed on this topic, the therapeutic effect of HCQ or CQ still need more valid clinical evidence. In this descriptive observational study, we aimed to discuss the treatment response of HCQ in COVID-19 infected patients and 30 cases were included. The demographic, treatment, laboratory parameters of C-reactive protein (CRP) and interleukin-6 (IL-6) before and after HCQ therapy and clinical outcome in the 30 patients with COVID-19 were assessed. To evaluate the effect of mediation time point, we also divided these cases into two groups, patients began administrated with HCQ within 7 days hospital (defined as early delivery group) and 7 days after hospital (defined as later delivery group). We found that, the elevated IL-6, a risk factor in severe patients were reduced to normal level after HCQ treatment. More importantly, patients treated with HCQ at the time of early hospital recovered faster than those who treated later or taken as second line choose for their obvious shorter hospitalization time. In summary, early use of HCQ was better than later use and the effect of IL-6 and CRP level cannot be ruled out.


Subject(s)
COVID-19 Drug Treatment , Hydroxychloroquine/therapeutic use , Adult , Aged , Aged, 80 and over , Alanine Transaminase/blood , Anti-Inflammatory Agents/administration & dosage , Anti-Inflammatory Agents/therapeutic use , Antimalarials/administration & dosage , Antimalarials/therapeutic use , Aspartate Aminotransferases/blood , C-Reactive Protein/analysis , China , Cytokines/blood , Disease Progression , Female , Humans , Hydroxychloroquine/administration & dosage , Interleukin-6/blood , Lymphopenia/blood , Male , Middle Aged , Severity of Illness Index , Time Factors , Young Adult
8.
Hepatology ; 64(6): 2135-2150, 2016 12.
Article in English | MEDLINE | ID: mdl-27639182

ABSTRACT

The central purpose of this study was to investigate therapeutic effects of the botanical derivative, kinsenoside (KD), in experimental autoimmune hepatitis (AIH). Treatment with KD substantially reduced hepatic histopathological damage, induced by lymphocyte infiltration and proinflammatory cytokines, in concanavalin A-induced T-cell-mediated hepatitis, and in dendritic cells (DCs) loaded with hepatocellular carcinoma cells (DC/Hepa1-6) induced murine AIH. Interactions between immune cells after KD treatment in AIH were detected by anti-CD8 antibody blocking, CD8+ T cell sorting, and vaccinated mice with KD-pretreated DCs in a DC/Hepa1-6 model. These results showed that KD inhibited the elevated expressions of CD86 and major histocompatibility complex II, densities of chemokine receptor C-C chemokine receptor type 7, and extensive migration to lymph nodes, and increased the programmed death ligand 1 level of DCs, followed by suppressing CD8+ T cells, characterized as low differentiation and cytotoxicity, and eliciting cytokines balance. Furthermore, biochemical analysis, two-dimensional fingerprint screen and three-dimensional molecular docking results showed that KD bound to the vascular endothelial growth factor receptor 2 (VEGFR2) kinase domain, which inhibited the metabolism-related phosphatidylinositol 3 kinase/protein kinase B (PI3K-AKT) pathway in DCs and DC-modulated CD8+ T cells to lower the mitochondrial membrane potential and glucose/lipid utilization ratio in both cells. KD reversed activation of the PI3K-AKT pathway by 740 Y-P (PI3K agonist), thereby impeding the translocation and dimerization of signal transducer and activators of transcription (STAT) 3 and synergistically blocking the inflammation-related Janus kinase (JAK) 2/STAT3 pathway in DCs and DC-modulated T cells. CONCLUSION: KD treatment elicits immunosuppression against autoimmune liver injury by targeting VEGFR2, followed by diminishing the cross-talk of metabolism-related PI3K-AKT and inflammation-related JAK2-STAT3 pathways, and thereby disrupts DC-induced cross-priming of CD8+ T cell responses. (Hepatology 2016;64:2135-2150).


Subject(s)
4-Butyrolactone/analogs & derivatives , CD8-Positive T-Lymphocytes/drug effects , Cell Communication/drug effects , Dendritic Cells/drug effects , Hepatitis, Autoimmune/drug therapy , Immunosuppressive Agents/therapeutic use , Monosaccharides/therapeutic use , 4-Butyrolactone/therapeutic use , Animals , CD8-Positive T-Lymphocytes/physiology , Cell Communication/physiology , Dendritic Cells/physiology , Male , Mice , Mice, Inbred BALB C , Mice, Inbred C57BL
9.
BMC Anesthesiol ; 17(1): 58, 2017 04 17.
Article in English | MEDLINE | ID: mdl-28415988

ABSTRACT

BACKGROUND: Mivacurium is the shortest acting nondepolarizing muscle relaxant currently available; however, the effect of different dosages and injection times of intravenous mivacurium administration in children of different ages has rarely been reported. This study was aimed to evaluate the muscle relaxant effects and safety of different mivacurium dosages administered over different injection times in pediatric patients. METHODS: Six hundred forty cases of pediatric patients, aged 2 m-14 years, ASA I or II, were divided into four groups (Groups A, B, C, D) according to the age class (2-12 m, 13-35 m, 3-6 years and 7-14 years) respectively, also each group were divided into four subgroups by induction dose (0.15, 0.2 mg/kg in 2-12 m age class; 0.2, 0.25 mg/kg in other three age classes), and mivacurium injection time (20 s, 40 s), totally 16 subgroups. Neuromuscular transmission was monitored with supramaximal train-of-four stimulation of the ulnar nerve. Radial artery blood (1 ml) was sampled to quantify plasma histamine concentrations before and 1, 4, and 7 min after mivacurium injection (P0, P1, P2 and P3). RESULTS: Five hundred sixty-two cases completed the study. There were no demographic differences within the four groups. The onset time of 0.2 mg/kg groups in 2-12 m aged patients were shorter than those of 0.15 mg/kg groups (189 ± 64 s vs. 220 ± 73 s, 181 ± 60 s vs. 213 ± 71 s, P <0.05), and the recovery times were no statistical differences. The T1 25% recovery time of 0.2 mg/kg in 3-6 years aged patients was shorter than that of 0.25 mg/kg group (693 ± 188 s vs. 800 ± 206 s, P <0.05). The onset and recovery times of mivacurium were not different in 13-35 m and 7-14 years aged patients. The plasma concentrations of histamine at P0, P1, P2 and P3 were not different within four groups. CONCLUSIONS: The induction dose and injection time of mivacurium had mostly insignificant effects on onset and recovery times. The main exception to this was that in 2-12 m aged patients, increasing the dose of mivacurium from 0.15 to 0.2 mg/kg accelerated the onset time by about 30 s. Mivacurium produced no significant release of histamine in any age group at the doses studied. TRIAL REGISTRATION: ClinicalTrials.gov Identifier- NCT02117401 , July 14, 2014. (Retrospectively registered).


Subject(s)
Isoquinolines/adverse effects , Isoquinolines/pharmacology , Muscle Relaxation/drug effects , Adolescent , Child , Child, Preschool , Dose-Response Relationship, Drug , Female , Histamine/analogs & derivatives , Histamine/blood , Humans , Infant , Isoquinolines/administration & dosage , Male , Mivacurium , Neuromuscular Monitoring , Neuromuscular Nondepolarizing Agents/administration & dosage , Neuromuscular Nondepolarizing Agents/adverse effects , Neuromuscular Nondepolarizing Agents/pharmacology
10.
Zhonghua Bing Li Xue Za Zhi ; 45(1): 37-42, 2016 Jan.
Article in Zh | MEDLINE | ID: mdl-26791552

ABSTRACT

OBJECTIVE: To investigate the clinicpathologic features and diagnosis of plasmablastic lymphoma (PBL). METHODS: Eleven cases of PBL were collected and followed up, with review of the literature. HIV and EBV status and their relationships with the tumor were specially compared as well. RESULTS: In the current cohort, 10 patients were serologically HIV negative; the male to female ratio was 8 to 3, and the median age was 57 years. Ten cases showed extranodal involvement and one case was nodal based. At presentation, five patients had mid-facial involvement, including sinonasal area (3 cases) and oral cavity (2 cases). Histologically, six were PBL of oral mucosa type, and five were PBL with plasmacytic differentiation. In all cases, the neoplastic cells expressed CD138 and MUM-1, and were negative for CD20 and CD3ε; the median Ki-67 index was 80%. Five cases were EBER1/2 in situ hybridization positive. IgH or/and Igκ gene rearrangement was detected in all five cases examined. CONCLUSIONS: Most patients were no congenital or acquired immunodeficiency in the retrospective study. Of the died patients, EBER1/2 in situ hybridization were negative and their disease staging were Ⅳ, The neoplastic cells were immunoblastic or plasmablastic, sometimes the plasmacytoid cell can be seen and the neoplastic cell had mature plasma cell phenotype, the pathologic diagnosis of the lymphoma is still controversial now. Differentiate with plasma cell neoplasm is difficult, it is necessary to accumulate more cases for advanced study and observation in the future.


Subject(s)
Plasmablastic Lymphoma/diagnosis , Plasmablastic Lymphoma/pathology , Female , Gene Rearrangement , Humans , In Situ Hybridization , Male , Middle Aged , Multiple Myeloma , Plasma Cells , RNA, Viral/metabolism , Retrospective Studies
11.
Dig Dis Sci ; 60(12): 3656-68, 2015 Dec.
Article in English | MEDLINE | ID: mdl-26182900

ABSTRACT

BACKGROUND: Regenerating islet-derived 3 (Reg3) is abnormally expressed in several human digestive system diseases, including chronic pancreatitis (CP) and pancreatic cancer (PC). AIM: The purpose of this study was to clarify the mechanism of the enhanced expression of Reg3 in inflammation-induced PC. METHODS: C57BL/6 mice were treated with caerulein for 6 weeks to induce CP and then injected with pReg3g--a lentivirus system encoding for murine Reg3g--accompanied by dimethylbenzanthracene to induce PC. We detected pancreatic histopathological characteristics, tumor-related gene expression, inflammation-associated pathway activation, serum biochemical indicators, and immunological cell activities. RESULTS: The mice that developed CP after caerulein treatment were marked by pronounced histologic lesions, elevated serum amylase levels, and activation of inflammation-related pathways. Mice given a high dose of pReg3g developed PC by 16 weeks, with recognizable tumors in the pancreas. While, both the low and high doses of pReg3g produced higher transcription of c-fos, k-ras, cytokeratin-19, and proliferating cell nuclear antigen, and a lower expression of caspase-3 compared to pNEG controls. Additionally, the higher dose of pReg3g increased the expressions of pSTAT3, NFκB (p65), and SOCS3 methylation during PC development. In addition, mice treated with pReg3g displayed higher levels of serum IL10 and TGFß and suppressed T lymphocyte proliferation and DC function. CONCLUSION: The comprehensive analysis suggests enhanced Reg3g expression exacerbates PC in inflammation-associated cancer progression. Reg3g appears to promote CP-related PC in mice through multiple mechanisms, involving enhanced transcription of pancreatic tumor markers, repression of anti-tumor immunity, and activation of STAT3/p65 signal transduction pathways.


Subject(s)
Carcinogenesis/chemically induced , Pancreatic Neoplasms/metabolism , Pancreatitis, Chronic/metabolism , Proteins/pharmacology , Acinar Cells , Animals , Carcinogenesis/metabolism , Cytokines/genetics , Cytokines/metabolism , Gene Expression Regulation, Neoplastic/drug effects , Lymphocytes/drug effects , Lymphocytes/physiology , Mice , Mice, Inbred C57BL , Pancreatic Neoplasms/chemically induced , Pancreatic Neoplasms/genetics , Pancreatitis, Chronic/chemically induced , Pancreatitis, Chronic/pathology , Pancreatitis-Associated Proteins , Proteins/genetics , Proteins/metabolism , Proto-Oncogenes/genetics , Proto-Oncogenes/physiology
12.
Anesth Analg ; 118(2): 303-309, 2014 Feb.
Article in English | MEDLINE | ID: mdl-24445631

ABSTRACT

BACKGROUND: Previous studies have shown that a low dose of propofol IV bolus had a beneficial effect on intrathecal morphine-induced pruritus in humans. However, its exact mechanism has not been fully understood. In this study, we hypothesized that propofol relieved intrathecal morphine-induced pruritus in rats by upregulating the expression of cannabinoid-1 (CB[1]) receptors in anterior cingulate cortex (ACC). METHODS: Twenty-four Sprague-Dawley rats were divided into a control group and 20, 40, 80 µg/kg morphine groups to create an intrathecal morphine-induced scratching model. The effects of propofol on intrathecal 40 µg/kg morphine-induced scratching responses were then evaluated. Sixty rats were randomly assigned to control, normal saline, intralipid, and propofol groups, with pruritus behavior observation or killed 8 minutes after venous injection of normal saline, intralipid, or propofol, and brain tissues were then collected for assay. Immunohistochemistry was then performed to identify the expression of CB (1) receptor in ACC, and the concentration of CB(1) receptor in ACC was determined by Western blot analysis. RESULTS: Compared with the control group, rats in the 20, 40, 80 µg/kg morphine groups had higher mean scratching response rates after intrathecal morphine injection (P =0.020, 0.005, and 0.002, respectively). There was a statistical difference between 20 and 40 µg/kg morphine groups at 10 to 15 and 15 to 20 timepoints after intrathecal morphine injection (P = 0.049 and 0.017, respectively). Propofol almost abolished the scratching response that was induced by 40 µg/kg intrathecal morphine injection (F[2, 15] = 46.87, P < 0.001; F[22, 165] = 2.37, P = 0.001). Compared with the intralipid and normal saline groups, the scratching behavior was significantly attenuated in the propofol group (P < 0.001). Compared with control, normal saline, and intralipid groups, the protein expression of CB(1) receptor in ACC (Western blot) in the propofol group increased (0.86 ± 0.21, 0.94 ± 0.18, 0.86 ± 0.13, and 1.34 ± 0.32, respectively, P < 0.001). There was no significant difference among control, normal saline, and intralipid groups. Compared with the control, normal saline, and intralipid groups, the average number of neurons of CB(1) receptor in the ACC area were higher in the propofol group (21.0 ± 1.4, 19.3 ± 1.8, 24.8 ± 7.7, and 37.2 ± 3.3, respectively, P < 0.001). CONCLUSIONS: Morphine elicits dose-independent scratching responses after intrathecal injection in rats. Morphine 40 µg/kg intrathecal injection-induced scratching responses can be prevented by propofol. Increased protein expression of CB(1) receptors in ACC may contribute to the reversal of intrathecal morphine-induced scratching.


Subject(s)
Gyrus Cinguli/drug effects , Injections, Spinal , Morphine/administration & dosage , Propofol/therapeutic use , Pruritus/drug therapy , Up-Regulation , Analgesics, Opioid/administration & dosage , Anesthetics, Intravenous/therapeutic use , Animals , Catheterization, Central Venous , Dose-Response Relationship, Drug , Jugular Veins/pathology , Male , Postoperative Complications/drug therapy , Pruritus/chemically induced , Rats , Rats, Sprague-Dawley , Receptor, Cannabinoid, CB1/metabolism
13.
J Cancer ; 15(6): 1668-1674, 2024.
Article in English | MEDLINE | ID: mdl-38370365

ABSTRACT

Purpose: The prognosis of patients with recurrent or metastatic head and neck squamous cell carcinoma (R/M HNSCC) that are refractory to programmed cell death protein 1 (PD-1) immunotherapy is relatively poor. The salvage therapy was rarely investigated and urgently needed. Methods: We conducted a single center retrospective real-world study to explore the efficacy of cetuximab plus PD-1 inhibitors as salvage therapy in patients progressed from first-line immunotherapy. Results: In the present study, 28 eligible patients were included between October 2020 and May 2023. By the cut-off date (Sep 24th, 2023), the objective response rate (ORR) was 46.4% (95% CI, 29.5%-64.2%). Kaplan-Meier survival analysis revealed the median progression free survival (mPFS) in the study was 6.87 months (95% CI, 4.77-8.97 months), and median overall survival (mOS) was 9.67 months (95% CI, 4.79-14.55 months). Multivariate Cox regression analysis indicated that ECOG performance status and best response to salvage therapy was found to be the prognosis factor of salvage therapy. For the safety, the most common treatment related adverse events (TRAEs) were rash (72.1%), anemia (64.3%) and fatigue (46.5%) during the salvage therapy. The most common potential irAEs were hypothyroidism (25%), and pneumonitis (14.3%). Only 3 patients (10.7%) experienced grade 3 TRAEs, and no treatment-related deaths occurred. Conclusions: Our study showed the combination of cetuximab with PD-1 inhibitors might be a potential efficacy and safety choice in PD-1 refractory patients with R/M HNSCC which need further investigation.

14.
Am J Cancer Res ; 14(3): 1338-1352, 2024.
Article in English | MEDLINE | ID: mdl-38590417

ABSTRACT

Cistanche deserticola, known for its extensive history in Traditional Chinese Medicine (TCM), is valued for its therapeutic properties. Recent studies have identified its anticancer capabilities, yet the mechanisms underlying these properties remain to be fully elucidated. In this study, we determined that a mixture of four cistanche-derived phenylethanoid glycosides (CPhGs), echinacoside, acteoside, 2-acetylacteoside, and cistanoside A, which are among the main bioactive compounds in C. deserticola, eliminated T-cell lymphoma (TCL) cells by inducing apoptosis and pyroptosis in vitro and attenuated tumor growth in vivo in a xenograft mouse model. At the molecular level, these CPhGs elevated P53 by inhibiting the SIRT2-MDM2/P300 and PI3K/AKT carcinogenic axes and activating PTEN-Bax tumor-suppressing signaling. Moreover, CPhGs activated noncanonical and alternative pathways to trigger pyroptosis. Interestingly, CPhGs did not activate canonical NLRP3-caspase-1 pyroptotic signaling pathway; instead, CPhGs suppressed the inflammasome factor NLRP3 and the maturation of IL-1ß. Treatment with a caspase-1/4 inhibitor and silencing of Gasdermin D (GSDMD) or Gasdermin E (GSDME) partially rescued CPhG-induced cell death. Conversely, forced expression of NLRP3 restored cell proliferation. In summary, our results indicate that CPhGs modulate multiple signaling pathways to achieve their anticancer properties and perform dual roles in pyroptosis and NLRP3-driven proliferation. This study offers experimental support for the potential application of CPhGs in the treatment of TCL.

15.
Nanoscale ; 16(19): 9317-9324, 2024 May 16.
Article in English | MEDLINE | ID: mdl-38656387

ABSTRACT

For atomically thin two-dimensional materials, variations in layer thickness can result in significant changes in the electronic energy band structure and physicochemical properties, thereby influencing the carrier dynamics and device performance. In this work, we employ time- and energy-resolved photoemission electron microscopy to reveal the ultrafast carrier dynamics of PdSe2 with different layer thicknesses. We find that for few-layer PdSe2 with a semiconductor phase, an ultrafast hot carrier cooling on a timescale of approximately 0.3 ps and an ultrafast defect trapping on a timescale of approximately 1.3 ps are unveiled, followed by a slower decay of approximately tens of picoseconds. However, for bulk PdSe2 with a semimetal phase, only an ultrafast hot carrier cooling and a slower decay of approximately tens of picoseconds are observed, while the contribution of defect trapping is suppressed with the increase of layer number. Theoretical calculations of the electronic energy band structure further confirm the transition from a semiconductor to a semimetal. Our work demonstrates that TR- and ER-PEEM with ultrahigh spatiotemporal resolution and wide-field imaging capability has great advantages in revealing the intricate details of ultrafast carrier dynamics of nanomaterials.

16.
Cardiovasc Diabetol ; 12: 171, 2013 Nov 15.
Article in English | MEDLINE | ID: mdl-24229414

ABSTRACT

BACKGROUND: The presence of diabetes and plasma glucose concentration on admission are associated with adverse outcomes after an acute myocardial infarction (AMI), as high glucose can induce vascular endothelial cell apoptosis. This study explored the relative associations among admission plasma glucose level, soluble Fas (sFas) concentration, and long-term survival in patients with acute ST-elevation myocardial infarction (STEMI). METHODS: This prospective cohort study include 83 patients with acute STEMI. Based on their admission plasma glucose levels (7.8 and 11.1 mmol/L as the limits for low and high levels, respectively), patients were allocated into one of three groups: normal glucose (n = 33), median glucose (n = 24), and high glucose (n = 26). The admission plasma level of sFas was measured with a sandwich enzyme-linked immunosorbent assay (ELISA). Patients were followed up for an average of 89 ± 20 months for all causes of death and cardiovascular death. RESULTS: sFas levels were significantly higher in the high glucose group compared to the normal glucose group (5.87 ± 1.70 mmol/L vs. 3.07 ± 0.93 mmol/L, respectively, P < 0.05). The sFas level was positively associated with the admission plasma glucose level. The correlation coefficient (R) was 0.747, and R2 was 0.559. Mortality was significantly higher in the high glucose group compared to the normal glucose group (19.2% vs. 3.0%, respectively, P < 0.05). CONCLUSIONS: In patients with acute STEMI, plasma glucose level was high on admission, and sFas apoptosis levels were increased. Long-term follow-up revealed that a high admission plasma glucose level was associated with higher mortality compared to a normal admission glucose level.


Subject(s)
Apoptosis/physiology , Blood Glucose/metabolism , Hyperglycemia/metabolism , Myocardial Infarction/metabolism , fas Receptor/metabolism , Aged , Cohort Studies , Enzyme-Linked Immunosorbent Assay , Female , Humans , Hyperglycemia/complications , Kaplan-Meier Estimate , Male , Middle Aged , Myocardial Infarction/complications , Myocardial Infarction/mortality , Prospective Studies
17.
Front Immunol ; 14: 1212101, 2023.
Article in English | MEDLINE | ID: mdl-37469514

ABSTRACT

Renal cell carcinoma (RCC) represents an extremely challenging disease in terms of both diagnosis and treatment. It poses a significant threat to human health, with incidence rates increasing at a yearly rate of roughly 2%. Extracellular vesicles (EVs) are lipid-based bilayer structures of membranes that are essential for intercellular interaction and have been linked to the advancement of RCC. This review provides an overview of recent studies on the role of EVs in RCC progression, including involvement in the interaction of tumor cells with M2 macrophages, mediating the generation of immune tolerance, and assuming the role of communication messengers in the tumor microenvironment leading to disease progression. Finally, the " troika " of EVs in RCC therapy is presented, including engineered sEVs' or EVs tumor vaccines, mesenchymal stem cell EVs therapy, and reduction of tumor-derived EVs secretion. In this context, we highlight the limitations and challenges of EV-based research and the prospects for future developments in this field. Overall, this review provides a comprehensive summary of the role of EVs in RCC and their potential as a viable pathway for the future treatment of this complex disease.


Subject(s)
Carcinoma, Renal Cell , Extracellular Vesicles , Kidney Neoplasms , Mesenchymal Stem Cells , Humans , Carcinoma, Renal Cell/pathology , Mesenchymal Stem Cells/metabolism , Macrophages/metabolism , Kidney Neoplasms/pathology , Extracellular Vesicles/metabolism , Tumor Microenvironment
18.
J Asian Nat Prod Res ; 14(3): 270-5, 2012.
Article in English | MEDLINE | ID: mdl-22332775

ABSTRACT

This study examined the effects of breviscapine (1) on pulmonary inflammatory response and lung function in pediatric patients undergoing open heart surgery. Forty-five children (ASA II or III, aged 2-72 months) were randomly assigned to control group (saline, Group C), low dose 1 group (0.5 mg/kg, Group Bre0.5), and high dose 1 group (1.0 mg/kg, Group Bre1.0), 15 cases each group. Plasma concentrations of procalcitonin (PCT) and neutrophil elastase (NE) were measured and compared at different time points. Plasma concentrations of PCT and NE were increased after cardiopulmonary bypass (CPB) induction, and the concentrations were lower in 1-treated groups. The present results indicated that continuous infusion of 1 before the CPB suppressed the production of PCT and NE attenuated systemic inflammatory response, which could result in lung protective effect in children undergoing open heart surgery.


Subject(s)
Anti-Inflammatory Agents/administration & dosage , Cardiac Surgical Procedures , Flavonoids/pharmacology , Adolescent , Anti-Inflammatory Agents/chemistry , Calcitonin/analysis , Calcitonin/blood , Calcitonin Gene-Related Peptide , Cardiopulmonary Bypass/methods , Child, Preschool , Dose-Response Relationship, Drug , Flavonoids/chemistry , Humans , Infant , Leukocyte Elastase/analysis , Leukocyte Elastase/blood , Protein Precursors/analysis , Protein Precursors/blood , Thoracic Surgery
19.
Zhong Nan Da Xue Xue Bao Yi Xue Ban ; 37(2): 137-41, 2012 Feb.
Article in Zh | MEDLINE | ID: mdl-22561441

ABSTRACT

OBJECTIVE: To analyze the status quo of quantitative classification in Hunan Province catering industry, and to discuss the countermeasures in-depth. METHODS: According to relevant laws and regulations, and after referring to Daily supervision and quantitative scoring sheet and consulting experts, a checklist of key supervision indicators was made. The implementation of quantitative classification in 10 cities in Hunan Province was studied, and the status quo was analyzed. RESULTS: All the 390 catering units implemented quantitative classified management. The larger the catering enterprise, the higher level of quantitative classification. In addition to cafeterias, the smaller the catering units, the higher point of deduction, and snack bars and beverage stores were the highest. For those quantified and classified as C and D, the point of deduction was higher in the procurement and storage of raw materials, operation processing and other aspects. CONCLUSION: The quantitative classification of Hunan Province has relatively wide coverage. There are hidden risks in food security in small catering units, snack bars, and beverage stores. The food hygienic condition of Hunan Province needs to be improved.


Subject(s)
Food Contamination/prevention & control , Food Services/organization & administration , Foodborne Diseases/prevention & control , Restaurants/legislation & jurisprudence , China , Food Microbiology , Hygiene
20.
Medicine (Baltimore) ; 101(47): e31858, 2022 Nov 25.
Article in English | MEDLINE | ID: mdl-36451436

ABSTRACT

The incidence of endometrial adenocarcinoma (EA) has increased worldwide in recent years due to the widespread use of estrogen therapy and the overall increase in life expectancy. However, we know of no sensitive molecular index that can be used to predict the onset of EA, evaluate the therapeutic effects of treatment agents, or provide prognostic benefit in post-treatment follow-up. To explore the correlation between human olfactomedin 4 (OLFM4) and the clinicopathologic parameters of EA, and to determine the precise involvement of OLFM4 as a related factor in the occurrence and development of EA. We enrolled 61 gynecologic patients for a retrospective study at the Tai'an Central Hospital of Shandong Province from January 1, 2016, to June 30, 2022. We determined the expression levels of estrogen receptor α (ERα), progesterone receptor (PR), and OLFM4 proteins in endometrial tissue with the immunohistochemical S-P staining method, and analyzed the correlations among ERα, PR, and OLFM4 protein expression levels and with the pathologic stage, histologic grade, myometrial invasiveness, and lymphatic metastasis of EA. The expression levels of OLFM4 in EA were higher than in normal endometrium (P = .036). The expression level of OLFM4 protein in stage II-III patients was higher than that in stage I patients (P = .034), and the expression levels of ERα and PR proteins in EA were lower than those in normal endometrial tissue (P = .014 and P = .0005). While we observed no correlation in endometrial tissues of disparate pathologic types between OLFM4 and the expression levels of ERα and PR proteins, we noted a positive correlation between the expression levels of ERα and PR protein. The expression level of OLFM4 protein increased with the malignant degree of endometrial lesions and OLFM4 protein expression was related to the FIGO stage of EA. And OLFM4 protein can be used as 1 of the potential diagnostic factors for endometrial lesions, which is worthy of further study.


Subject(s)
Adenocarcinoma , Estrogen Receptor alpha , Humans , Female , Retrospective Studies , Epithelium , Hormone Replacement Therapy , Granulocyte Colony-Stimulating Factor
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