BACKGROUND:Prolyl hydroxylase domain 2(PHD2)inhibitors can regulate bone metabolism and relieve osteoporosis in ovariectomized rats.cpd17 is a small molecule oral PHD2 inhibitor newly developed by China Pharmaceutical University.It is effective in the treatment of renal anemia with few side effects,but its effect on bone formation and bone resorption is still unclear. OBJECTIVE:To investigate the effects of cpd17 on mouse osteogenic precursor cells. METHODS:Osteogenic precursor cells were treated with cpd17.Alkaline phosphatase activity and extracellular matrix mineralization were measured,and the expression levels of osteogenesis-and osteoclastogenesis-related markers,as well as PHD2 and hypoxia-inducible factor 1α,were detected.After inhibition of the hypoxia-inducible factor 1α pathway using LW6(a hypoxia-inducible factor 1α pathway inhibitor),alkaline phosphatase activity and extracellular matrix mineralization were detected again,as well as the expression levels of osteogenesis-and osteoclastogenesis-related markers,PHD2 and hypoxia-inducible factor 1α. RESULTS AND CONCLUSION:cpd17 significantly enhanced alkaline phosphatase activity and extracellular matrix mineralization,up-regulated the expression of osteogenesis-related markers,down-regulated the expression of osteoclastogenesis-related markers,up-regulated the expression of hypoxia-inducible factor 1α,down-regulate the expression of PHD2.However,cpd17's effects were significantly attenuated by LW6.To conclude,the PHD2 inhibitor cpd17 promotes osteogenic differentiation and inhibits osteoclastic differentiation through activation of the hypoxia-inducible factor 1α signaling pathway.

We retrospectively analyzed therapy efficacy and the adverse reactions of 10 patients suffering from systemic lupus erythematosus (SLE) with intestinal involvement treated with rituximab (RTX). Patients were hospitalized in the Department of Rheumatology and Immunology of the First Medical Center of PLA General Hospital from January 2015 to January 2023. Among the 10 patients, two were men and eight were women. The age of the cohort was (41.9±8.8) years. The age at disease onset was (28.8±9.2) years. The total course of the SLE diagnosis was(109.6±59.9) months. The course of the diagnosis of SLE with intestinal involvement was (89.3±50.2) months. The time from the appearance of intestinal symptoms to the diagnosis of SLE with intestinal involvement was 1.5 (1.0,8.0) months. The time from the diagnosis of SLE with intestinal involvement to RTX use was 13.0 (1.0,46.3) months. Follow-up duration after application of RTX treatment was (55.3±28.4) months. There were five cases of abdominal pain, four cases of abdominal distension, nine cases of diarrhea, three cases of nervous-system involvement, nine cases of lupus nephritis, and seven cases of serositis. All 10 patients underwent computed tomography and radiology of the abdomen. Eight patients had intestinal-wall edema, seven suffered intestinal dilation, four had target signs, three suffered congestion of mesenteric blood vessels, eight had increased mesenteric-fat density, and six had false intestinal obstruction. All 10 patients showed a low level of complement C3 (250-750 mg/L). Nine cases showed a low level of complement C4 (10-90 mg/L). The SLE disease activity index 2000 (SLEDAI-2K) at baseline in 10 patients was 20.5 (17.8, 30.0). After receiving RTX (0.5 g: day 1, day 14, or 375 mg/m 2: day 1, day 14) induction treatment, the intestinal symptoms of 10 cases were relieved completely. Four patients had adverse reactions, of which three received a high-dose glucocorticoid combined with RTX treatment simultaneously. Adverse reactions manifested mainly as a reduced level of IgG and infection with herpes simplex virus in one case, reduced level of IgG and lung infection in one patient, lung infection in one case, and reduced IgG level in one patient. RTX may an efficacious treatment strategy for patients suffering from refractory SLE with intestinal involvement.

Objective To explore the brain metabolic hormone homocysteine in patients with schizophrenia homocysteine(HCY),prolactin(PRL)in its correlation with cognitive function,mining of repetitive transcranial magnetic stimulation(rTMS)combined with olanzapine for the disease,in order to interpret the influence mechanism of brain metabolic hormones and cognitive function,at the same time,mining rTMS and olanzapine to enrich research in this field,to provide reference for related studies.Methods The data of 128 schizophrenia patients treated in the hospital from June 2021 to August 2023 were selected for retrospective analysis,divided into the observation group 72 cases combined rTMS with olanzapine and the control group 56 cases(olanzapine monotherapy).Serum serum HCY,PRL,positive and negative syndrome scale(PANSS),interleukin(IL)-12,tumor necrosis factor(TNF)-α and their associations were analyzed in both groups.The incidence of adverse effects was compared between the two groups.Results After treatment,the levels of PRL,HCY,IL-12,and TNF-α in the observation group were lower than those of the control group,with significant and statistically significant differences(P<0.05).Under the interaction,time point and between groups,the PANSS scores of the two groups changed due to the time passage of different treatment methods,but the observation group was lower than the control group,with significant differences(P<0.05).Treatment was negatively associated with HCY,PRL,IL-12,TNF-α,and PANSS,and HCY,PRL,IL-12,TNF-α,and PANSS were positively associated(P<0.05).The incidence of headache,impaired memory,drowsiness,and adverse reaction events in the observed group was lower than that in the control group,and the difference was significant(P<0.05).Conclusion After rTMS combined with olanzapine treatment,schizophrenia patients can reduce HCY and PRL hormone levels,alleviate inflammation,reduce adverse reactions,and improve cognitive function.

Objective The aim of this study was to investigate whether there are differences in the expression spectrums of RSK4 in different tumor cells and to predict the possible protein subtypes and their biological characteris-tics.Methods RNA was extracted from glioma cells GL261,ovarian cancer cells ID8,breast cancer cells 4T1 and 168FARN,colon cancer cells mc38 and CT26,gastric cancer cells MFC and lung cancer cells LLC1.The expres-sions and splicing isomers of RSK4 were detected by RT-PCR.The biological characteristics and functions of RSK4 were analyzed by bioinformatics.Results RT-PCR results showed that RSK4 was expressed in GL261,4T1,mc38,CT26,MFC and LLC1;and multiple splicing isomers were expressed in different tumor cells.Open reading frame analysis revealed RSK4 may encode at least 11 protein subtypes.Secondary structure analysis showed that these protein subtypes encoded by the splicing isomers were composed of α-helix,extended strand,β-turn and random coil,and had the same conserved domain.The results of protein interaction network enrichment analysis showed that RSK4 exerted kinase activity in the nucleus and cytoplasm mainly through the mTOR signaling pathway and long-term potentiation.Conclusions RSK4 has different expression spectrums in different tumor cells,and may produces a variety of protein isoforms with different nitrogen terminals,which can be involved in different biological processes through multiple signaling pathways.

The study aimed to analyze the efficacy and safety of rituximab in the treatment of 23 cases of lupus nephritis and explore the prospect of half-dose rituximab in lupus nephritis treatment. Twenty-three patients with lupus nephritis hospitalized in the Department of Rheumatology and Immunology at the First Medical Center of the PLA General Hospital from May 2013 to December 2021 were selected. Eighteen patients received rituximab 375 mg/m 2 on the first and 14th days, 5 patients received 500 mg of rituximab on the first and 14th days, and rituximab was used as needed 6 months later. Methylprednisolone (80-120 mg) was given together with rituximab. Afterward, 1 mg/kg prednisone was used for 4 weeks, which was progressively tapered to maintenance doses or discontinued. B lymphocyte level, renal function, 24-h urine protein level, and systemic lupus erythematosus (SLE) disease activity index 2000 (SLEDAI2K) score before and after treatment were recorded. The efficacy and adverse reactions were analyzed. The results showed that 11 patients suffered from renal insufficiency [creatinine (162.7±58.6) μmol/L ] at baseline, while the creatinine level of 9 patients returned to normal 12 months after the treatment [ (66.3±10.1)μmol/L ]. Normal renal function of the other 12 patients was maintained during treatment. After 12 months, the 24-h urine protein level decreased from 4.00 (2.00,6.80) g in the baseline period to 0.10 (0.08,0.40) g. SLEDAI2K score decreased from 22 (18,26) in the baseline period to 3 (0,6) 12 months after the treatment. The B lymphocyte level reached 0.00 (0.00,0.01)% at 3 months. Of 23 patients, 13 patients achieved complete remission, and 7 patients achieved partial remission after 6 months of rituximab treatment. Five patients experienced adverse reactions related to rituximab, including 1 case of transfusion reaction, 1 case of perioral herpes with pulmonary infection, and 3 cases of decreased IgG levels. Therefore, rituximab regimen used in this study can be an effective treatment strategy for lupus nephritis.

In situ and real-time monitoring of responsive drug release is critical for the assessment of pharmacodynamics in chemotherapy. In this study, a novel pH-responsive nanosystem is proposed for real-time monitoring of drug release and chemo-phototherapy by surface-enhanced Raman spectroscopy (SERS). The Fe₃O₄@Au@Ag nanoparticles (NPs) deposited graphene oxide (GO) nanocomposites with a high SERS activity and stability are synthesized and labeled with a Raman reporter 4-mercaptophenylboronic acid (4-MPBA) to form SERS probes (GO-Fe₃O₄@Au@Ag-MPBA). Furthermore, doxorubicin (DOX) is attached to SERS probes through a pH-responsive linker boronic ester (GO-Fe₃O₄@Au@Ag-MPBA-DOX), accompanying the 4-MPBA signal change in SERS. After the entry into tumor, the breakage of boronic ester in the acidic environment gives rise to the release of DOX and the recovery of 4-MPBA SERS signal. Thus, the DOX dynamic release can be monitored by the real-time changes of 4-MPBA SERS spectra. Additionally, the strong T₂ magnetic resonance (MR) signal and NIR photothermal transduction efficiency of the nanocomposites make it available for MR imaging and photothermal therapy (PTT). Altogether, this GO-Fe₃O₄@Au@Ag-MPBA-DOX can simultaneously fulfill the synergistic combination of cancer cell targeting, pH-sensitive drug release, SERS-traceable detection and MR imaging, endowing it great potential for SERS/MR imaging-guided efficient chemo-phototherapy on cancer treatment.

[This corrects the article DOI: 10.1016/j.apsb.2022.08.024.].

Alphapapillomavirus ; Humans ; Lupus Erythematosus, Systemic ; Papillomavirus Infections/prevention & control* ; Vaccination

A 28-year-old man was admitted to the first medical center of Chinese People′s Liberation Army General Hospital because of multiple myalgia and intramuscular nodules for more than 2 months. The patient complained of dysphagia, fever and weight loss 2 months ago. Magnetic resonance imaging and biopsy revealed nodular fasciitis. Inflammatory indicators including C-reactive protein, erythrocyte sedimentation rate, platelet count and fibrinogen were slightly elevated. Urine occult blood was positive. Abdominal ultrasound revealed left hydronephrosis. Because nodular fasciitis could not explain the whole situation, a needle biopsy of intramuscular nodules was performed. Pathological examination revealed intramuscular metastatic adenocarcinoma with poor differentiation. Gastric endoscope and positron emission tomography-computed tomography confirmed the diagnosis of advanced gastric adenocarcinoma with extensive metastases of esophagus, lymph nodes, muscles, ureter and bone. Although chemotherapy was given, the patient died of disease progression six months later.

Objective To investigate the efficacy of arthroscopic synovectomy on refractory knee arthritis complicated with popliteal cyst.Methods Patients diagnosed as rheumatoid arthritis (RA) or spondyloarthritis (SPA) with refractory knee arthritis who underwent knee arthroscopic synovectomy in our hospital from 2010 to 2017 were enrolled,including 20 patients (16 RA,4 SpA) with popliteal cyst.Clinical data,RA disease activity score (DAS28),SpA back pain score,etc,were collected to evaluate the efficacy of knee surgery.Results Erythrocyte sedimentation rate (ESR) [58(17,79)mm / 1h vs.19(9,30)mm/1h,P＜ 0.001],C reactive protein (CRP) [3.72(0.92,8.14) mg/L vs.0.85(0.10,3.08) mg/L,P＜0.001],rheumatoid factor [64.6(20.2,193.3) vs.20.5(10.0,58.4),P＜0.001],DAS28 score(4.67±1.25 vs.2.81±1.23,P＜0.001),knee joint discomfort score [5(4,6) vs.2(1,3),P＜0.001] and the volume of knee joint effusion by ultrasound (P＜0.05) in 95 RA patients were significantly decreased compared to those before operation.ESR [27(12,54)mm/1h vs.20 (16,28) mm/1 h,P＜0.001],CRP [3.27(1.06,6.95) mg/L vs.1.41(0.34,3.03)mg/L,P＜0.001],knee discomfort score [2(0,5) vs.1(0,3),P＜0.05],back pain visual analogue score (VAS) [5(4,5) vs.2(1,3),P＜0.001],and the volume of knee joint effusion by ultrasound (P＜0.001) in 58 SpA patients were significantly lower than those before the operation.The rate [16.84％(16/95) vs.6.32％(6/95),P=0.023] and grading (P=0.007) of popliteal cyst in RA were decreased after the operation.No statistically difference was observed in the rate [6.90％ (4/58) vs.5.17％(3/58),P=0.697] of popliteal cyst in patients with SpA,yet with a trend of decrease in 4 patients.Conclusion This study provide evidence that knee arthroscopic synovectomy has a good effect for refractory knee arthritis,which can reduce disease activity,improve joint symptoms and decrease the grading of popliteal cyst.