OBJECTIVES: To evaluate the photothermal and antibacterial activities of polydopamine-modified phycocyanin nanoparticles (PDA@PC NPs) and their capacity for promoting wound healing. METHODS: PDA@PC NPs were synthesized from phycocyanin (C-PC) and dopamine hydrochloride using a one-pot method. The photothermal activity of the nanoparticles was assessed in vitro by 808 nm laser irradiation, their biocompatibility was evaluated using CCK-8 assay, and their photothermal antibacterial activity by plate colony counting. In adult male BALB/c mice, two symmetrical full-thickness skin wounds (1.0 cm ×1.0 cm) were created on both sides of the spine, and 200 μL of Staphylococcus aureus suspension was inoculated into the wounds. The mice were divided into control group, PDA@PC NPs group, and PDA@PC NPs with laser irradiation group, and wound healing rates and histomorphological changes in the wound tissues were evaluated on days 0, 7 and 14 after modeling. RESULTS: The synthesized PDA@PC NPs exhibited no obvious cytotoxicity up to a concentration of 500 μg/mL and showed strong photothermal and antibacterial activities in response to 808 nm laser irradiation. In the mouse models, the size of the infected skin wounds showed substantial reduction at 7 and 14 days in PDA@PC NPs group and PDA@PC NPs with laser irradiation group, and the mean wound healing rate was faster in the latter group. HE staining and Masson's trichrome staining revealed extensive granulation tissue formation and collagen deposition on the wound surfaces in both of the treatment groups, and these changes were more obvious in the PDA@PC NPs with laser irradiation group. CONCLUSIONS PDA@PC NPs possess excellent photothermal and antibacterial activities and can effectively promote wound healing in mice.
Animals ; Indoles/chemistry* ; Wound Healing/drug effects* ; Mice ; Mice, Inbred BALB C ; Male ; Nanoparticles ; Polymers/chemistry* ; Phycocyanin/chemistry* ; Skin/injuries* ; Staphylococcus aureus/drug effects* ; Anti-Bacterial Agents/pharmacology*

Objective To assess the therapeutic effect of acupuncture in depressive disorders based on current randomized controlled trials(RCTs).Method RCTs on acupuncture interventions for primary depression by searching databases including CNKI,Wanfang,VIP,Sinomed,PubMed,and Embase.Two researchers independently assessed the quality of the literature,extracted data according to the latest Cochrane Handbook for Systematic Reviews of Interventions,and cross-checked the data.Meta-analysis was performed using RevMan 5.4 software.Result A total of 52 studies were included,comprising 5277 patients.The meta-analysis results showed that acupuncture significantly improved depression symptoms as measured by the Hamilton Depression Rating Scale(HAMD)and reduced clinical inefficacy rates{HAMD-17:WMD=-2.35,95%CI[-3.04,-1.67],P<0.000 01;HAMD-24:WMD=-2.77,95%CI[-3.52,-2.03],P<0.000 01;HAMD(unspecified scale):WMD=-2.77,95%CI[-3.52,-2.03],P<0.000 01;Clinical inefficacy:RR=0.39,95%CI[0.33,0.47],P<0.000 01}.Additionally,acupuncture increased 5-HT levels(SMD=1.11,95%CI[0.67,1.55],P<0.000 01).In terms of safety,acupuncture did not increase the incidence of adverse events and reduced TESS scores{Adverse event incidence:RR=0.65,95%CI[0.47,0.89],P=0.007;TESS scores:WMD=-1.66,95%CI[-3.12,-0.20],P=0.03}.There is potential publication bias regarding clinical inefficacy and adverse events,necessitating cautious interpretation.Conclusion Based on the current evidence,acupuncture is an effective and safe treatment for depressive disorders.However,more high-quality RCTs are needed to further validate or refine these conclusions.

Objective:To investigate the combined therapeutic role of the AKT inhibitor MK2206 and Ruxolitinib in treating Myeloproliferative Neoplasms (MPN) driven by a calreticulin (CALR) gene mutation.Methods:① Murine bone marrow c-kit + cells were isolated by sacrificing mice and harvesting bone marrow from the femur, tibia, and ilium for subsequent c-kit + cell sorting. ② A CALR transplantation mouse model was established. GFP-tagged retroviral vectors containing either the CALR gene mutation or the migR1 control were constructed, packaged in Platinum-E cells, and used to transduce murine bone marrow c-kit + cells. These transduced cells were then transplanted into lethally irradiated female recipient mice via tail vein injection. ③ Following successful engraftment, the mice were randomly assigned to four treatment groups for intragastric administration. Complete blood counts were monitored periodically, and the spleen size and weight of transplanted mice were measured. ④ Flow cytometry was used to quantify the proportions of GFP + tumor cells, megakaryocytic lineage cells, and hematopoietic stem cells in both splenic and bone marrow tissues. Histopathological examination was performed to evaluate the degree of tumor cell infiltration in these organs. Results:① Following gavage treatment, peripheral blood platelet (PLT) and white blood cell counts were significantly lower in the combined AKT inhibitor MK2206 and Ruxolitinib group compared to the MK2206, Ruxolitinib, and control groups ( P<0.05). ② In comparison with the MK2206 and Ruxolitinib monotherapy groups, the combination therapy group exhibited a significant reduction in spleen weight and a marked improvement in splenomegaly at 30 weeks post-transplantation ( P<0.05). ③ After four weeks of continuous treatment, combined administration resulted in a significant decrease in the proportion of megakaryocytic lineage cells and GFP + tumor cells in the bone marrow and spleen ( P<0.05). Additionally, the proportion of hematopoietic stem cells in the bone marrow was also significantly reduced ( P<0.05). ④ Histopathological analysis (H&E staining) of bone marrow and spleen tissues confirmed that the combined regimen decreased both tumor cell infiltration and the proportion of abnormal megakaryocytes in these organs. Conclusion:The combination of AKT inhibitor MK2206 and Ruxolitinib is effective at significantly ameliorating disease symptoms and reducing tumor infiltration in vivo in mice with a myeloproliferative tumor transplantation driven by a CALR gene mutation.

OBJECTIVE To explore the distribution of pathogens isolated from respiratory tract secretions,observe the expressions of serum nitric oxide(NO),matrix metalloproteinase-2(MMP-2)and interleukin-8(IL-8)in the epiglottic cyst infection patients complicated with acute epiglottitis,and analyze the clinical significance.METHODS The clinical data were collected from 98 epiglottic cyst infection patients complicated with acute epi-glottitis who were treated in the First People's Hospital of Linping District from Jan.2019 to Jun.2023.The dis-tribution of pathogens isolated from the respiratory tract secretions was recorded.Among the enrolled patients,45 patients who received conservative therapy were assigned as the non-surgery group,and 53 patients who under-went electrotome resection under self-retaining laryngoscope were assigned as the surgery group.The levels of ser-um NO,MMP-2 and IL-8 were compared between the two groups of patients,the recurrence rate was observed and compared after the discharge for 6 months.The values of serum NO,MMP-2 and IL-8 at the admission in prediction of recurrence of the non-surgery group 6 months after the surgery were analyzed by means of receiver operating characteristic(ROC)curves.RESULTS Totally 61 strains of pathogens were isolated from the 98 pa-tients,63.93％of which were gram-negative bacteria,and 36.07％were gram-positive bacteria.The levels of ser-um NO,MMP-2 and IL-8 of the two groups were lower after the discharge than at the admission(P＜0.05),which were lower on the 7th day of admission than on the 3rd day of admission(P＜0.05).The levels of serum NO,MMP-2 and IL-8 of the surgery group were lower than those of the non-surgery group on the 7th day of dis-charge(P＜0.05).The recurrence rate of the surgery group was 0 after the discharge for 6 months,lower than 13.33％of the non-surgery group(0.00％vs.13.33％,continuity correction x2=5.387,P=0.020).ROC curve a-nalysis showed that the levels of serum NO,MMP-2 and IL-8 at the admission had statistical significance in pre-diction of recurrence 6 months after the discharge(P＜0.05).CONCLUSION As compared with conservative thera-py,the electrotome resection under self-retaining laryngoscope may reduce the recurrence rate of acute epiglottitis in the epiglottic cyst infection patients,and the levels of serum NO,MMP-2 and IL-8 can assist the prediction of risk of recurrence.

Objective:To investigate the combined therapeutic role of the AKT inhibitor MK2206 and Ruxolitinib in treating Myeloproliferative Neoplasms (MPN) driven by a calreticulin (CALR) gene mutation.Methods:① Murine bone marrow c-kit + cells were isolated by sacrificing mice and harvesting bone marrow from the femur, tibia, and ilium for subsequent c-kit + cell sorting. ② A CALR transplantation mouse model was established. GFP-tagged retroviral vectors containing either the CALR gene mutation or the migR1 control were constructed, packaged in Platinum-E cells, and used to transduce murine bone marrow c-kit + cells. These transduced cells were then transplanted into lethally irradiated female recipient mice via tail vein injection. ③ Following successful engraftment, the mice were randomly assigned to four treatment groups for intragastric administration. Complete blood counts were monitored periodically, and the spleen size and weight of transplanted mice were measured. ④ Flow cytometry was used to quantify the proportions of GFP + tumor cells, megakaryocytic lineage cells, and hematopoietic stem cells in both splenic and bone marrow tissues. Histopathological examination was performed to evaluate the degree of tumor cell infiltration in these organs. Results:① Following gavage treatment, peripheral blood platelet (PLT) and white blood cell counts were significantly lower in the combined AKT inhibitor MK2206 and Ruxolitinib group compared to the MK2206, Ruxolitinib, and control groups ( P<0.05). ② In comparison with the MK2206 and Ruxolitinib monotherapy groups, the combination therapy group exhibited a significant reduction in spleen weight and a marked improvement in splenomegaly at 30 weeks post-transplantation ( P<0.05). ③ After four weeks of continuous treatment, combined administration resulted in a significant decrease in the proportion of megakaryocytic lineage cells and GFP + tumor cells in the bone marrow and spleen ( P<0.05). Additionally, the proportion of hematopoietic stem cells in the bone marrow was also significantly reduced ( P<0.05). ④ Histopathological analysis (H&E staining) of bone marrow and spleen tissues confirmed that the combined regimen decreased both tumor cell infiltration and the proportion of abnormal megakaryocytes in these organs. Conclusion:The combination of AKT inhibitor MK2206 and Ruxolitinib is effective at significantly ameliorating disease symptoms and reducing tumor infiltration in vivo in mice with a myeloproliferative tumor transplantation driven by a CALR gene mutation.

OBJECTIVE To explore the distribution of pathogens isolated from respiratory tract secretions,observe the expressions of serum nitric oxide(NO),matrix metalloproteinase-2(MMP-2)and interleukin-8(IL-8)in the epiglottic cyst infection patients complicated with acute epiglottitis,and analyze the clinical significance.METHODS The clinical data were collected from 98 epiglottic cyst infection patients complicated with acute epi-glottitis who were treated in the First People's Hospital of Linping District from Jan.2019 to Jun.2023.The dis-tribution of pathogens isolated from the respiratory tract secretions was recorded.Among the enrolled patients,45 patients who received conservative therapy were assigned as the non-surgery group,and 53 patients who under-went electrotome resection under self-retaining laryngoscope were assigned as the surgery group.The levels of ser-um NO,MMP-2 and IL-8 were compared between the two groups of patients,the recurrence rate was observed and compared after the discharge for 6 months.The values of serum NO,MMP-2 and IL-8 at the admission in prediction of recurrence of the non-surgery group 6 months after the surgery were analyzed by means of receiver operating characteristic(ROC)curves.RESULTS Totally 61 strains of pathogens were isolated from the 98 pa-tients,63.93％of which were gram-negative bacteria,and 36.07％were gram-positive bacteria.The levels of ser-um NO,MMP-2 and IL-8 of the two groups were lower after the discharge than at the admission(P＜0.05),which were lower on the 7th day of admission than on the 3rd day of admission(P＜0.05).The levels of serum NO,MMP-2 and IL-8 of the surgery group were lower than those of the non-surgery group on the 7th day of dis-charge(P＜0.05).The recurrence rate of the surgery group was 0 after the discharge for 6 months,lower than 13.33％of the non-surgery group(0.00％vs.13.33％,continuity correction x2=5.387,P=0.020).ROC curve a-nalysis showed that the levels of serum NO,MMP-2 and IL-8 at the admission had statistical significance in pre-diction of recurrence 6 months after the discharge(P＜0.05).CONCLUSION As compared with conservative thera-py,the electrotome resection under self-retaining laryngoscope may reduce the recurrence rate of acute epiglottitis in the epiglottic cyst infection patients,and the levels of serum NO,MMP-2 and IL-8 can assist the prediction of risk of recurrence.

Objective:To investigate the relationship between retinoblastoma binding protein 1 (RB1) gene deletion and the prognosis of multiple myeloma (MM) patients, and the possible effect of renal insufficiency on it.Methods:A retrospective cohort study was conducted. The clinical data and follow-up information of MM patients who were treated in the Second Affiliated Hospital of Xuzhou Medical University and the Affiliated Hospital of Xuzhou Medical University from December 2020 to November 2023 were collected. According to the presence of RB1 gene deletion in bone marrow samples detected by fluorescence in situ hybridization (FISH), the patients were divided into the RB1 gene deletion group and the RB1 gene non-deletion group, and the clinicopathological characteristics and hematological index levels were compared between the two groups. Renal insufficiency was determined by renal function assessment indicator serum creatinine (Scr) >177 μmol/L. The Spearman test was used to analyze the relationship between the number of RB1 gene deletion positive cells and levels of Scr, hemoglobin and serum calcium in MM patients. The Kaplan-Meier method was used to analyze progression-free survival (PFS), and the Cox proportional hazards model was used to determine the influencing factors of PFS in all MM patients and RB1 gene deletion and non-deletion MM patients.Results:A total of 75 MM patients were enrolled, of whom 24 (32.0%) had RB1 gene deletion. There were no significant differences in gender, age ≥65 years old, bone destruction and lactate dehydrogenase level between the RB1 gene deletion and non-deletion groups (all P > 0.05). There were significant differences in the distributions of patients in each stage of MM International Staging System (ISS) and revised International Staging System (R-ISS) between the two groups, as well as in hemoglobin, serum calcium, Scr, β 2-microglobulin, serum albumin levels, and the proportion of bone marrow plasma cells (all P < 0.05). The number of RB1 gene deletion positive cells was positively correlated with Scr level ( r = 0.863, P = 0.016), but not with hemoglobin and serum calcium levels (both P > 0.05). The PFS of the RB1 gene non-deletion group was better than that of the RB1 gene deletion group (1-year PFS rate: 83.5% vs. 71.7%, 2-year PFS rate: 56.3% vs. 26.3%), and the difference was statistically significant ( P = 0.012). PFS in the non-renal insufficiency group was better than that in the renal insufficiency group (1-year PFS rate: 85.6% vs. 61.9%, 2-year PFS rate: 58.0% vs. 13.5%), and the difference was statistically significant ( P = 0.001). The PFS of patients without renal insufficiency in both the RB1 gene deletion and non-deletion groups was better than that in patients with renal insufficiency, and the differences were statistically significant (both P < 0.05). Multivariate Cox regression analysis showed that ISS stage Ⅲ was an independent risk factor for poor PFS in MM patients (stage Ⅲ vs. stage Ⅰ, HR = 11.317, 95% CI: 1.220-104.979, P = 0.033). Multivariate Cox regression analysis in RB1 gene deletion and non-deletion groups showed that ISS stage Ⅲ (stage Ⅲ vs. stageⅠ, HR = 4.166, 95% CI: 1.419-12.225, P = 0.009), R-ISS stage Ⅲ (stage Ⅲ vs. stage Ⅰ, HR = 3.800, 95% CI: 1.005-14.367, P = 0.049), serum calcium > 2.52 mmol/L (> 2.52 mmol/L vs. ≤2.52 mmol/L, HR = 2.398, 95% CI: 1.037-5.546, P = 0.041) and renal insufficiency (yes vs. no, HR = 2.363, 95% CI: 1.021-5.472, P = 0.045) were independent risk factors for poor PFS in RB1 gene non-deletion MM patients, and serum calcium >2.52 mmol/L (>2.52 mmol/L vs. ≤ 2.52 mmol/L, HR = 3.673, 95% CI: 1.160-11.627, P = 0.027) and renal insufficiency (yes vs. no, HR = 3.985, 95% CI: 1.220-13.016, P = 0.022) were independent risk factors for poor PFS in RB1 gene deletion MM patients. Conclusions:The PFS of MM patients with RB1 gene deletion is worse than that of patients without RB1 gene deletion, RB1 gene deletion may be related to renal insufficiency in MM patients, and the prognosis of MM patients with RB1 gene deletion and renal insufficiency may be worse.

Objective To assess the therapeutic effect of acupuncture in depressive disorders based on current randomized controlled trials(RCTs).Method RCTs on acupuncture interventions for primary depression by searching databases including CNKI,Wanfang,VIP,Sinomed,PubMed,and Embase.Two researchers independently assessed the quality of the literature,extracted data according to the latest Cochrane Handbook for Systematic Reviews of Interventions,and cross-checked the data.Meta-analysis was performed using RevMan 5.4 software.Result A total of 52 studies were included,comprising 5277 patients.The meta-analysis results showed that acupuncture significantly improved depression symptoms as measured by the Hamilton Depression Rating Scale(HAMD)and reduced clinical inefficacy rates{HAMD-17:WMD=-2.35,95%CI[-3.04,-1.67],P<0.000 01;HAMD-24:WMD=-2.77,95%CI[-3.52,-2.03],P<0.000 01;HAMD(unspecified scale):WMD=-2.77,95%CI[-3.52,-2.03],P<0.000 01;Clinical inefficacy:RR=0.39,95%CI[0.33,0.47],P<0.000 01}.Additionally,acupuncture increased 5-HT levels(SMD=1.11,95%CI[0.67,1.55],P<0.000 01).In terms of safety,acupuncture did not increase the incidence of adverse events and reduced TESS scores{Adverse event incidence:RR=0.65,95%CI[0.47,0.89],P=0.007;TESS scores:WMD=-1.66,95%CI[-3.12,-0.20],P=0.03}.There is potential publication bias regarding clinical inefficacy and adverse events,necessitating cautious interpretation.Conclusion Based on the current evidence,acupuncture is an effective and safe treatment for depressive disorders.However,more high-quality RCTs are needed to further validate or refine these conclusions.

Objective:To investigate the relationship between retinoblastoma binding protein 1 (RB1) gene deletion and the prognosis of multiple myeloma (MM) patients, and the possible effect of renal insufficiency on it.Methods:A retrospective cohort study was conducted. The clinical data and follow-up information of MM patients who were treated in the Second Affiliated Hospital of Xuzhou Medical University and the Affiliated Hospital of Xuzhou Medical University from December 2020 to November 2023 were collected. According to the presence of RB1 gene deletion in bone marrow samples detected by fluorescence in situ hybridization (FISH), the patients were divided into the RB1 gene deletion group and the RB1 gene non-deletion group, and the clinicopathological characteristics and hematological index levels were compared between the two groups. Renal insufficiency was determined by renal function assessment indicator serum creatinine (Scr) >177 μmol/L. The Spearman test was used to analyze the relationship between the number of RB1 gene deletion positive cells and levels of Scr, hemoglobin and serum calcium in MM patients. The Kaplan-Meier method was used to analyze progression-free survival (PFS), and the Cox proportional hazards model was used to determine the influencing factors of PFS in all MM patients and RB1 gene deletion and non-deletion MM patients.Results:A total of 75 MM patients were enrolled, of whom 24 (32.0%) had RB1 gene deletion. There were no significant differences in gender, age ≥65 years old, bone destruction and lactate dehydrogenase level between the RB1 gene deletion and non-deletion groups (all P > 0.05). There were significant differences in the distributions of patients in each stage of MM International Staging System (ISS) and revised International Staging System (R-ISS) between the two groups, as well as in hemoglobin, serum calcium, Scr, β 2-microglobulin, serum albumin levels, and the proportion of bone marrow plasma cells (all P < 0.05). The number of RB1 gene deletion positive cells was positively correlated with Scr level ( r = 0.863, P = 0.016), but not with hemoglobin and serum calcium levels (both P > 0.05). The PFS of the RB1 gene non-deletion group was better than that of the RB1 gene deletion group (1-year PFS rate: 83.5% vs. 71.7%, 2-year PFS rate: 56.3% vs. 26.3%), and the difference was statistically significant ( P = 0.012). PFS in the non-renal insufficiency group was better than that in the renal insufficiency group (1-year PFS rate: 85.6% vs. 61.9%, 2-year PFS rate: 58.0% vs. 13.5%), and the difference was statistically significant ( P = 0.001). The PFS of patients without renal insufficiency in both the RB1 gene deletion and non-deletion groups was better than that in patients with renal insufficiency, and the differences were statistically significant (both P < 0.05). Multivariate Cox regression analysis showed that ISS stage Ⅲ was an independent risk factor for poor PFS in MM patients (stage Ⅲ vs. stage Ⅰ, HR = 11.317, 95% CI: 1.220-104.979, P = 0.033). Multivariate Cox regression analysis in RB1 gene deletion and non-deletion groups showed that ISS stage Ⅲ (stage Ⅲ vs. stageⅠ, HR = 4.166, 95% CI: 1.419-12.225, P = 0.009), R-ISS stage Ⅲ (stage Ⅲ vs. stage Ⅰ, HR = 3.800, 95% CI: 1.005-14.367, P = 0.049), serum calcium > 2.52 mmol/L (> 2.52 mmol/L vs. ≤2.52 mmol/L, HR = 2.398, 95% CI: 1.037-5.546, P = 0.041) and renal insufficiency (yes vs. no, HR = 2.363, 95% CI: 1.021-5.472, P = 0.045) were independent risk factors for poor PFS in RB1 gene non-deletion MM patients, and serum calcium >2.52 mmol/L (>2.52 mmol/L vs. ≤ 2.52 mmol/L, HR = 3.673, 95% CI: 1.160-11.627, P = 0.027) and renal insufficiency (yes vs. no, HR = 3.985, 95% CI: 1.220-13.016, P = 0.022) were independent risk factors for poor PFS in RB1 gene deletion MM patients. Conclusions:The PFS of MM patients with RB1 gene deletion is worse than that of patients without RB1 gene deletion, RB1 gene deletion may be related to renal insufficiency in MM patients, and the prognosis of MM patients with RB1 gene deletion and renal insufficiency may be worse.

Objective To isolate endophytic fungi from Angelica sinensis and evaluate the bioactivity of their secondary metabolites.Methods Angelica sinensis and rhizosphere soil were utilized as materials.The tissue homogenization method was employed with six diverse culture media to isolate endophytic fungi.The antibacterial activity of secondary metabolites was gauged using a 96-well plate assay,while UV spectrophotometry was used to evaluate the inhibitory activity of four enzymes.Results A total of 153 fungal strains were isolated and purified from Angelica sinensis roots,stems,leaves,and soil.The samples exhibited specific inhibitory activities against adenosine deaminase(ADA),β-lactamase,xanthine oxidase(XO),and tyrosinase(TYR),with rates of 45.83%,52.78%,51.39%and 55.56%,respectively.Furthermore,1.39%of the samples displayed wide-ranging inhibitory effects against four indicator bacteria.Strain 6B also showcased the lowest inhibitory concentration values of 62.5 and 7.81 μg/mL against Escherichia coli ATCC25922 and ATCC35218,respectively,signifying its potential research significance.Conclusion Angelica sinensis has abundant endophytic fungal resources and is a good source for discovering active compounds,demonstrating certain research value.