Objective:To explore the clinical efficacy and safety of daratumumab-based combined regimens for relapsed/refractory multiple myeloma (RRMM).Methods:A retrospective case series study was conducted. The clinical data of 38 patients with RRMM in Jining NO.1 People's Hospital from Janunary 2020 to December 2022 were retrospectively analyzed. All patients were treated with daratumumab-based combined regimens. The Dd regimen (12 cases) was treated with daratumumab and dexamethasone, the DPD regimen (20 cases) was treated with pomalodomide based on the Dd regimen, the DVD regimen (6 cases) was treated with bortezomib based on the Dd regimen. The therapeutic efficacy and adverse reactions of all groups were analyzed. Kaplan-Meier method was used for survival analysis.Results:The median follow-up time was 9.5 months (1.0 months, 32.5 months) and the median treatmemt time was 6.2 months (3.2 months, 25.6 months). Among 38 patients, 7 cases (18.7%) achieved complete remission, 9 cases (23.6%) achieved very good partial remission, 10 cases (26.3%) achieved partial remission, 4 cases (10.5%) achieved minimal remission, 5 cases (13.1%) achieved stable disease, 3 cases (7.9%) had the progression of the disease. The overall response rate (ORR) was 78.9% (30/38). The ORR was 66.7%(8/12), 83.3%(5/6), 85.0%(17/20), respectively in the Dd group, DVD group and DPD group. There was no statistically significant difference in the ORR between the DVD group and DPD group ( χ2 = 0.01, P>0.05); there was no statistically significant difference in the ORR between the DVD group and Dd group ( χ2 = 0.55, P>0.05); there was no statistically significant difference in the ORR between the DPD group and Dd group ( χ2 = 1.47, P>0.05). The median progression-free survival (PFS) time was 12.5 months (95% CI: 8.5-24.2 months),the median overall survival (OS) time was not reached, and the 1-year OS rate was 89.4%. Among 38 patients, the main adverse reactions during treatment were infusion-related adverse reactions in 5 cases, grade 3 neutropenia in 7 cases, grade 3 thrombocytopenia in 9 cases, severe anemia in 12 cases; no one had drug discontinuation or drug reduction due to the intolerance of adverse reactions. Conclusions:Daratumumab-based combined regimens in the treatment of RRMM show a favorable efficacy and safety.

Objective: To investigate the hygienic status of the central air conditioner ventilation system in public places in urban areas of Ma'anshan City, Anhui Province, so as to provide insights into formulation of supervision and management interventions. Methods: A total of 15 public places with the central air conditioner ventilation system were randomly sampled from main urban areas in Ma'anshan City in 2022. Sampling and detection were performed following the standard GB/T 18204.5—2013 Examination methods for public places Part 5: Central air conditioning ventilation system, including total number of bacteria and total number of fungus on the inner surface of wind pipes, total number of bacteria and fungus, particulate matter (PM10) and β-hemolytic streptococci in the air supply system, and Legionella pneumophila in the cooling water, and the detection indicators were assessed following the WS 394—2012 Guideline for hygiene of the central air conditioner ventilation system in public places. The eligible rate of samples, the detection rate of L. pneumophila were analyzed. Results: A total of 368 samples were collected from 15 public places, and the qualified rate was 50.54%, no places had all eligible measurement indicators. The qualified rates of total bacteria and fungus numbers on the inner surface of wind pipes were 52.67% and 59.33%. The qualified rates of total bacterium number, total fungus number, PM10 and β-hemolytic streptococci were 12.00%, 28.00%, 90.00% and 96.00% in the air supply system. The qualified rates of samples in administrative workplaces, hotels, bathing places and malls (supermarkets) were 32.50%, 59.24%, 61.09% and 68.92%, the qualified rates of total bacteria on the inner surface of air ducts were 8.33%, 72.46%, 66.67% and 61.90%, and the qualified rates of total fungus numbers in air supply were 0, 21.70%, 33.30% and 71.40%, respectively, with statistical significance (P<0.05). A total of 18 cooling water samples were collected, and L. pneumophila was detected in three samples (16.67%). Conclusions Poor hygiene is seen in the central air conditioning ventilation systems in public places in main urban areas of Ma'anshan City. High attention needs to be paid to contamination of bacterium, fungus and L. pneumophila, and expansion of supervision coverage and improved supervision intensity are recommended.

Objective To investigate the effect of vitamin D(VD)on intestinal flora in spontaneously diabetic rats.Methods Zucker diabetic fatty rats(ZDF rats)were randomised to control(Con)group,VD control(VD)group,model(T2DM)group,and VD intervention(VD+T2DM)group.Fasting blood glucose profiles and oral glucose tolerance levels were determined in rats of each group.16S rDNA sequencing was used to assess changes in rat intestinal flora.OTU analysis(Venn diagram),α diversity analysis(chao1,observed species,PD whole tree,and shannon and simpson),βdiversity analysis(principal coordinate analysis(PCoA)),flora structure,and colony species variability analysis(linear discriminant analysis and influence factor(LEfSe)analysis)were also performed.Results VD intervention significantly improved fasting blood glucose levels and insulin resistance in T2DM rats(P＜0.05).α diversity showed no significant differences in chao1,observed species,PD whole tree,and shannon and simpson indices between T2DM and VD+T2DM groups(P＞0.05).β diversity analysis showed that the VD+T2DM group had more species similarity to the Con group than the T2DM group.The dominant bacteria of rat intestinal flora in each group were significantly different.In comparison to the T2DM group,the VD+T2DM group showed a decrease in abundance of Bacteroidetes and increases in abundances of Firmicutes and Clostridium XIVa.Conclusions VD improves fasting glucose elevation and insulin resistance in T2DM rats.VD improves the structure of intestinal flora,decreases Bacteroidetes,and elevates Firmicutes and Clostridium XIVa abundances in T2DM rats.

Objective:To establish the qualitative and quantitative methods of Lomatogonium carinthiacum(Wulf.)Reichb.in the prescription of Mongolian medicine Polypill Zhuanglun-5 decoction,and solve the phe-nomenon of Lomatogonium carinthiacum(Wulf.)Reichb.being replaced.Methods:Microscopic identification method was used to observe the pollen grains in the powder;The reference substance of swertiamarin and Lomato-gonium carinthiacum(Wulf.)Reichb.were used as the control,and the ethyl acetate methanol water formic acid(12∶2∶2∶0.5)was used as the developing agent for TLC identification;HPLC was used under the condin-tion including Agilent Eclipse Plus C18(250 mm × 4.6 mm,5 μm)as chromatographic column and 0.2％phosphoric acid solution(A)-acetonitrile(B)as mobile phase with gradient elution at 238 nm of detection wavelength were used.Contents of Zhuanglun-5 decoction from different manufacturers were determined with swertiamarin as reference substance.Results:Among the 12 batches of Zhuanglun-5 decoction,8 batches were Lomatogonium carinthiacum(Wulf.)Reichb.,2 batches were Viola yedoensis,and 2 batches were other medicinal materials.The content of swertiamarin in 8 batches of Zhuanglun-5 decoction ranged from 0.2 to 11.7 mg·g-1.Conclusion:The established identification method is simple and effective,and the content determination method is stable and has strong specificity.It can provide technical support for the supervision of the preparation,and has a reference effect for the improvement of traditional Chinese and Mongolian pharmaceuti-cal preparation standards.

ObjectiveBased on non-targeted metabolomics， to analyze the regulation of endogenous differential metabolites in serum of type 2 diabetes mellitus（T2DM） rats by Fuling Yunhua granules， and to clarify the metabolic pathways through which this granules exerted its effect on improving T2DM. MethodSeventy SD rats， half male and half female， were randomly divided into the control group， model group， and high， medium， low dose groups of Fuling Yunhua granules（20.70， 10.35， 5.18 g·kg^-1 in raw drug amount） and the positive drug group（pioglitazone hydrochloride tablets， 8.1 mg·kg^-1）. Except for the control group， other groups were fed with high-sugar and high-fat diet combined with intraperitoneal injection of streptozotocin（STZ） to establish a T2DM rat model. After successful modeling， the treatment groups were administered the corresponding drugs by gavage， and the control group and model group were treated with an equal volume of saline by gavage， once/d， for 28 d. Fasting blood glucose（FBG） and glycosylated hemoglobin A1c（GHbA1c） levels were measured in all groups of rats during the administration period， and hematoxylin-eosin（HE） staining was used to observe the pathomorphological changes in the pancreatic tissues of rats at the end of the administration period. The endogenous metabolite levels in rat serum were detected by ultra-performance liquid chromatography-linear ion trap-electrostatic field orbitrap high-resolution mass spectrometry（UPLC-LTQ-Orbitrap MS）， and the data were processed using principal component analysis（PCA） and orthogonal partial least squares-discriminant analysis（OPLS-DA）. Differential metabolites were identified by the Human Metabolome Database（HMDB） and the Kyoto Encyclopedia of Genes and Genomes（KEGG）， and screened for differential metabolites with variable importance in the projection（VIP） value>1， P<0.05， and fold change（FC）<0.6 or FC>1. And the metabolic pathway enrichment analysis of the screened differential metabolites was performed by MetaboAnalyst 5.0， then the screened differential metabolites were diagnosed and evaluated by the receiver operating characteristic（ROC） curves. ResultCompared with the control group， the FBG level of rats in the model group increased significantly（P<0.01）， the GHbA1c content tended to increase， but the difference was not statistically significant， and the pancreatic tissue of rats was obviously damaged， the number of pancreatic islets decreased， and the pancreatic β-cells were obviously reduced， atrophied and enlarged. Compared with the model group， the FBG levels of rats in the high dose group of Fuling Yunhua granules and the positive drug group were significantly reduced after 2 weeks of administration（P<0.05， P<0.01）， the GHbA1c content of rats in the high dose group of Fuling Yunhua granules was significantly reduced（P<0.05）， and the pancreatic tissue lesions of rats in the different dose groups of Fuling Yunhua granules were reduced. The results of non-targeted metabolomics showed that 46 differential metabolites were significantly changed in the model group compared with the blank group. Pathway enrichment analysis found that T2DM mainly affected biological processes including biosynthesis of primary bile acid， D-amino acid metabolism， steroid hormone biosynthesis， and glycerophospholipid metabolism in rats. Compared with the model group， the levels of 8 differential metabolites in the high dose group of Fuling Yunhua granules were significantly adjusted， and the pathway enrichment analysis found that D-amino acid metabolism， retinol metabolism， glycine， serine and threonine metabolism， tryptophan metabolism and other metabolic pathways were mainly involved. ROC curves further analysis revealed that the four characteristic differential markers of 11-cis-retinol， D-piperidinic acid， D-serine， and p-cresol sulfate had high diagnostic value for the treatment of T2DM with Fuling Yunhua granules. ConclusionFuling Yunhua granules can improve the symptoms of T2DM rats by regulating the amino acid metabolic and retinol metabolic pathways through the modulation of endogenous differential metabolites.

Objective:To explore the clinical effect and safety of venetoclax combined with azacitidine for high-risk myelodysplastic syndromes (MDS).Methods:A retrospective case series study was conducted. The clinical data of 48 patients with high-risk MDS in Jining No.1 People's Hospital from January 2020 to May 2023 were collected, and all patients were divided into the control group (20 cases) and the test group (28 cases) according to medications. The control group was treated with azacitidine alone, and the test group was treated with venetoclax combined with azacitidine regimen. The total effective rate and adverse reactions of the 2 groups were compared after 3 courses of treatment.Results:Among 48 patients, 30 cases were male and 18 cases were females; the median onset age [ M ( Q1, Q3)] was 62 years (54 years, 75 years). There were no statistically significant differences in gender, age, white blood cell count, neutrophil count, hemoglobin, platelet count, bone marrow original cells proportion between the 2 groups (all P>0.05). After 3 courses of treatment, the total effective rate in the test group was 75% (22/28), and the rate in the control group was 45% (9/20), and there was a statistically significant difference between the two groups ( χ2 = 5.74, P<0.05). The incidence of grade 3 and the above adverse reactions in the control group and the test group was 25% (5/20), 54% (15/28), respectively, and the difference was statistically significant ( χ2 = 1.62, P>0.05). Conclusions:Venetoclax combined with azacitidine regimen for high-risk MDS can improve the clinical efficacy, and the adverse reactions can be tolerated.

Objective:To investigate the effect of macrophage-derived exosomes on the morphological transformation of Candida albicans (CA), and to explore the underlying mechanisms.Methods:In vitro cultured human acute monocytic leukemia cell line THP-1 was induced and differentiated into M0 macrophages using the phorbol ester PMA. CA was activated and prepared as the fungal suspension. M0 macrophages were infected with the CA suspension, and the process of cell phagocytosis was observed under a high-content imaging analysis system. M0 macrophage-derived exosomes (exosome group) and CA-infected M0 macrophage-derived exosomes (CA exosome group) were extracted by differential centrifugation; transmission electron microscopy, nanoparticle tracking analysis, and Western blot analysis were performed to identify and compare exosomes in the two groups. The exosomes from the two groups were separately co-cultured with CA (exosome-treated group and CA exosome-treated group), and independently cultured CA served as the blank control group; the morphological changes of CA were observed under an inverted microscope, the intracellular cyclic adenosine monophosphate (cAMP) contents were detected by the enzyme-linked immunosorbent assay (ELISA), and the expression levels of cAMP-related genes, RAS1 and CDC35 (also known as Cyr1), were detected by real-time quantitative PCR (RT-qPCR) . Results:Western blot analysis showed that exosomes from the exosome group and CA exosome group both expressed the tumor susceptibility gene 101 protein (TSG101, an exosome marker), and did not express calnexin (a negative marker) ; transmission electron microscopy and nanoparticle tracking analysis showed no significant differences in the morphology or size of the exosomes between the two groups. Compared with the blank control group, the exosome-treated group and CA exosome-treated group both showed obvious inhibition of the yeast-to-mycelial phase transition of CA, with a noticeable reduction in the length of the hyphae under the inverted microscope. ELISA revealed that the intracellular cAMP content in CA significantly decreased in the exosome-treated group and CA exosome-treated group (16.70 ± 0.84 pmol/ml, 16.82 ± 0.87 pmol/ml, respectively) compared with the blank control group (21.82 ± 1.08 pmol/ml; t = 6.45, 6.23, respectively, both P = 0.003). RT-qPCR revealed that the expression of the cAMP-related genes, RAS1 and CDC35, was down-regulated in the exosome-treated group and CA exosome-treated group compared with the blank control group (all P < 0.01), and the RAS1 mRNA expression was significantly lower in the CA exosome-treated group than in the exosome-treated group ( t = 7.43, P = 0.002) . Conclusion:Both M0 macrophage-derived exosomes and CA-infected M0 macrophage-derived exosomes could effectively inhibit the mycelial growth of CA, and the latter one exhibited a stronger inhibitory effect, possibly by down-regulating cAMP in the cAMP/protein kinase A pathway.

Objective:To analyze functional changes in macrophages in mouse models of vulvovaginal candidiasis (VVC) by modulating indoleamine 2,3-dioxygenase 1 (IDO1) .Methods:Forty specific-pathogen-free female ICR mice were randomly divided into 4 groups using a complete randomization method: a blank group, a VVC model group, a VVC model + 1-methyltryptophan (1-MT) group (referred to as the 1-MT group), a VVC model + interferon-γ (IFN-γ) group (referred to as the IFN-γ group), with 10 mice in each group. Except for the blank group, all the mice were injected subcutaneously with estradiol benzoate oil solution in the abdomen every other day for 6 days prior to modeling to induce pseudoestrus; after successful induction of pseudoestrus, the mice were inoculated vaginally with Candida albicans suspensions at a concentration of 2 × 10 9 CFU/ml once a day for 5 days to establish VVC mouse models, and subcutaneous injections of estradiol benzoate oil solution were continued simultaneously to maintain the pseudoestrus state; 1 day before inoculation with fungal suspensions, mice in the 1-MT group and IFN-γ group were pretreated with 1-MT and IFN-γ respectively, followed by once-daily same intervention for 6 consecutive days; mice in the blank group and VVC model group were intraperitoneally injected with physiological saline solution once a day for 6 consecutive days. On the 5th day of modeling, vaginal conditions in mice were observed and vaginal symptoms were scored; the vaginal lavage fluid was collected for smear microscopy and fungal colony counting; then, the mice were sacrificed, the vaginal tissues were collected and subjected to hematoxylin-eosin (HE) staining and periodic acid-Schiff (PAS) staining, and the expression of IDO1 and the macrophage surface marker F4/80 was determined in the vaginal tissues by an immunofluorescence method; real-time fluorescence-based quantitative PCR (qPCR) was performed to determine mRNA expression levels of IDO1, inducible nitric oxide synthase (iNOS), and arginase 1 (Arg-1) in the vaginal tissues, and Western blot analysis to determine the IDO1 protein expression in the vaginal tissues. One-way analysis of variance was used to analyze the differences in indices among groups, and Tukey test was used for multiple comparisons. Results:Smear microscopic examination of the vaginal lavage fluid on the 5th day of modeling showed elongated hyphae with a few spores in the VVC model group, a large number of elongated hyphae aggregating in clusters with surrounding spores in the 1-MT group, and a few thin and short hyphae with a large number of spores in the IFN-γ group. Compared with the VVC model group (360.0 ± 15.9), the fungal colony counts in the vaginal lavage fluid significantly increased in the 1-MT group (523.7 ± 67.7, P = 0.002), but significantly decreased in the IFN-γ group (258.3 ± 27.57, P = 0.026). HE staining and PAS staining showed small abscess formation in the epidermis and predominant infiltration of neutrophils throughout the epidermal and dermal layers with a large number of spores and a few hyphae in the VVC model group; thickened epidermis and diffuse inflammatory infiltration predominated by neutrophils in the dermis were seen in the 1-MT group, with a large number of hyphae and spores aggregating into clusters, which were predominated by hyphae; in the IFN-γ group, spores aggregated in the epidermis without obvious hyphae, and a small amount of inflammatory cells predominated by neutrophils infiltrated the dermis. Immunofluorescence assay revealed that the relative fluorescence intensities of IDO1 and F4/80 were highest in the IFN-γ group and the 1-MT group, respectively. Western blot analysis revealed that the IDO1 protein expression in the VVC model group was significantly higher than that in the blank group ( P < 0.001) and the 1-MT group ( P < 0.05), but significantly lower than that in the IFN-γ group ( P < 0.05). qPCR showed that iNOS mRNA expression significantly increased in the VVC model group compared with the blank group ( P < 0.01), and increased in the IFN-γ group compared with the blank group, VVC model group and 1-MT group (all P < 0.001); Arg-1 mRNA expression significantly increased in the VVC model group compared with the blank group ( P < 0.001) and IFN-γ group ( P < 0.01), and increased in the 1-MT group compared with the blank group, VVC model group, and IFN-γ group (all P < 0.001) . Conclusion:In the VVC mouse models, upregulation of IDO1 may cause macrophage polarization toward the M1 phenotype, and inhibition of IDO1 may cause increased macrophage recruitment and exacerbate the inflammatory response.

Objective:To analyze the diagnostic and prognostic value of routine bone marrow examination in patients with extranodal NK/T-cell lymphoma (ENKTCL) based on PET-CT staging.Methods:Clinical data of 186 patients who received bone marrow biopsy and bone marrow aspiration in Fujian Medical University Union Hospital from 2013 to 2021 were retrospectively analyzed. All patients were divided into bone marrow biopsy + bone marrow aspiration group ( n=186) and PET-CT + bone marrow biopsy group ( n=139). The sensitivity, specificity, positive and negative predictive values were compared between two groups. The data were analyzed and plotted. Survival analysis was performed using Kaplan-Meier method and log-rank test. Results:In the whole cohort, 45 patients were positive for bone marrow biopsy, and 30 of them were positive for bone marrow aspiration. A total of 141 patients who were negative for bone marrow biopsy also achieved negative results for bone marrow aspiration. A total of 139 patients completed PET-CT staging and bone marrow biopsy. And 30 patients were diagnosed with positive bone marrow by PET-CT, in which 22 of them were confirmed positive by bone marrow biopsy. Among 109 patients diagnosed with negative bone marrow by PET-CT, 5 of them were confirmed positive by bone marrow biopsy. All these cases were classified as stage Ⅳ due to distant metastases. PET-CT had a diagnostic sensitivity of 81.5%, a specificity of 92.9%, a positive predictive value of 73.3%, and a negative predictive value of 95.4%. Among early stage (Ⅰ-Ⅱ stage) patients diagnosed with PET-CT, all of them were negative for bone marrow biopsy (the negative predictive value was 100%). In stage Ⅳ patients ( n=55), the 1-year overall survival of patients with bone marrow involvement by bone marrow biopsy or PET-CT ( n=35) compared with their counterparts with the involvement of other organs ( n=20) was 28.7% vs.42.0% ( P=0.13), and 1-year progression free survival rates was 23.2% vs. 23.3% in ( P=0.94). Conclusions:Routine bone marrow biopsy does not change the original staging of patients with early stage ENKTCL based on PET-CT staging. Advanced stage patients with positive bone marrow biopsy tend to obtain worse prognosis, indicating that bone marrow biopsy still has certain value.

Objective:To investigate the expression of LACTB and GST-π in endometrial carcinoma and their correlation with estrogen and progesterone receptors.Methods:A total of 165 patients with endometrial cancer admitted to our hospital from Jan. 2015 to Oct. 2020 were selected to observe the expression of LACTB, GST-π, estrogen and progesterone receptors in patients with different tumor stages, degrees of differentiation, muscular infiltration, tissue type, tumor diameter and whether there was lymph node metastasis. The correlation between the expression of LACTB and GST-π and the expression of female and progesterone receptors and the survival of patients with different expressions of LACTB and GST-π were analyzed.Results:The LATCB positive rate decreased in patients with tumor stage III to IV, high differentiation, myometrial infiltration ≥1/2, tissue type I, tumor diameter <2 cm and no lymph node metastasis ( P<0.05), and the GST-π positive rate was not statistically significant ( P>0.05). The positive rate of GST-π in patients with chemotherapy resistance was higher than that in patients with chemotherapy sensitivity, and the difference was statistically significant ( P<0.05). The positive rate of estrogen receptor decreased in patients with tumor stage III to IV, high differentiation, tissue type II, no lymph node metastasis, and chemotherapy resistance, and the difference was statistically significant ( P<0.05). The positive rate of progesterone receptor decreased in patients with tumor stage III to IV, low differentiation, tissue type I and no lymph node metastasis, and the difference was statistically significant ( P<0.05). In this study, 110 patients with LACTB positive expression were detected, with an average LACTB positive staining intensity (25.92±4.77) %, and 99 patients with GST-π positive expression were detected, with an average GST-π positive staining intensity (27.46±4.83). A total of 50 patients with LACTB positive and GST-π negative had an average survival time of (41.48±5.52) months, a total of 39 patients with LACTB negative and GST-π positive had an average survival time of (21.25±3.15) months, and a total of 60 patients with LACTB positive and GST-π positive had an average survival time of (21.25±3.15) months. The mean survival time of 16 patients with both LACTB negative and GST-π negative was 29.31±3.77 months. The mean survival time was 31.54±4.61 months. Pearson correlation test showed that the staining intensity of LACTB positive staining was positively correlated with the survival time of patients. The positive staining intensity of GST-π was negatively correlated with survival (correlation coefficient =0.392, -0.284, P<0.01). Pearson correlation analysis showed that LACTB was positively correlated with estrogen and progesterone receptors. GST-π was negatively correlated with estrogen receptor ( P<0.05) . Conclusions:The expression of LACTB in patients with endometrial cancer is associated with the disease of the patients. The survival of patients with high expression is longer. The expression of GST-π is associated with the chemotherapy resistance of patients, both of which can be used as indicators to evaluate the prognosis of patients. Moreover, the expressions of LACTB and GST-π are correlated with the expression of female and progesterone receptors, which may be regulated by the expression of female and progesterone receptors.