Mid-and long-term efficacy of modified Colonna arthroplasty in the treatment of unilateral dislocation type of juvenile developmental dysplasia of the hip / 中华骨科杂志

Objective:To investigate the mid-and long-term clinical efficacy of modified Colonna arthroplasty in the treatment of unilateral dislocation type developmental dysplasia of hip (DDH) in adolescents.Methods:A total of 28 adolescent DDH patients with unilateral dislocation who underwent modified Colonna capsular arthroplasty from January 2016 to January 2018 in the 920th Hospital of Joint Logistics Support Force of People's Liberation Army were retrospectively analyzed. There were 4 males and 24 females, aged 16.5±5.0 years (range, 10-25 years). The mean body mass index was 21.2±1.1 kg/m 2 (range, 18.7-24.1 kg/m 2). According to DDH classification, 10 cases were Tonnis type III and 18 cases were Tonnis type IV. The postoperative lateral center-edge angle, acetabular coverage, femoral anteversion angle and leg length discrepancy were measured. The operation time, intraoperative blood loss, visual analogue scale (VAS) of hip pain, Harris hip score (HHS) and congenital dislocation of the hip score were recorded. Results:All patients successfully completed the operation and were followed up for 72.1±5.2 months (range, 60-84 months). The operation time was 81.6±4.3 min (range, 70-90 min), the intraoperative blood loss was 177.5±12.6 ml (range, 160-200 ml), and the hospital stay was 6.8±0.7 days (range, 6-9 days). The VAS score of the hip joint was 1.8±0.6 before operation and 2.3±0.6 at the last follow-up, and the difference was not statistically significant ( t=2.845, P=0.224). The preoperative HHS score was 57.1±5.9, and it increased to 87.3±4.0 at the last follow-up, and the difference was statistically significant ( t=-22.141, P=0.001). At the last follow-up, the femoral anteversion angle was 17.0°±1.5°, which was lower than that before operation 41.6°±2.4°, with a statistically significant difference ( t=-44.868, P=0.008). The leg length discrepancy was 10.2±2.3 mm, which was lower than that before operation (26.4±6.1 mm), with a statistically significant difference ( t=-12.892, P<0.001). The lateral center-edge angle was 28° (26°, 30°), and the acetabular coverage rate was 78% (76%, 79%). The curative effect evaluation standard score of congenital dislocation of the hip was 24 (16.7, 25.7) points, including 7 excellent cases, 14 good cases, 4 fair cases, and 3 poor cases. The excellent and good rate was 75% (21/28). Conclusion:The modified Colonna arthroplasty for the treatment of unilateral dislocation DDH in adolescents has good mid-and long-term hip function recovery and radiographic improvement.

Finite element analysis of absorbable screws in Bernese periacetabular osteotomy / 中华骨科杂志

Objective:To investigate the stability and feasibility of using absorbable screws during Bernese periacetabular osteotomy.Methods:A retrospective analysis was conducted on a 36 year-old woman diagnosed with developmental dysplasia of the hip, who had undergone Bernese periacetabular osteotomy. Finite element analysis was used to simulate the stability of the acetabulum under loads of 10%, 20%, 50%, and 100% of the patient's weight. The structural stiffness of the pelvis and the maximum equivalent stress on the absorbable screws were observed under different conditions, including whether the acetabular bone block and the ilium were in contact, whether 3 or 4 screws were used, and whether a graft (including fibular cortical bone and PEEK grafts) was used.Results:The structural stiffness of the pelvis fixed with four screws increased by 67%-94% compared to that with three screws. After using a graft, the structural stiffness of the pelvis increased by 50%-83%. As the load increased, the maximum equivalent stress on the screws also increased. When the acetabular bone block and the ilium had no contact, no graft was used, and only three screws were used for fixation, the maximum equivalent stress could reach 518.9 MPa, while this value dropped to 61% when four screws were used (318.7 MPa). When the acetabular bone block and the ilium were in contact, the maximum equivalent stress was about 12% of that when there was no contact, regardless of the number of screws used. When a cortical bone graft or a PEEK graft was used, the maximum equivalent stress could drop to 21%-26% of that without a graft. When the screw strength was 130 MPa, a load of 20% of body weight was applied, and only three screws were used without a graft, the equivalent stress could exceed the strength of the screw; if four screws were used, the equivalent stress was slightly higher than the strength of the screw when a load of 50% of body weight was applied. However, when a graft was used (either cortical bone or PEEK), even when a load of 100% of body weight was applied, the equivalent stress was slightly lower than the strength of the screw.Conclusion:Absorbable screws can provide sufficient stability for Bernese periacetabular osteotomy. The contact between the acetabular bone block and the ilium, an increase in the number of screws, and the use of grafts (cortical bone and PEEK grafts) can further improve stability. Therefore, absorbable screws have broad application prospects in Bernese periacetabular osteotomy.

Exploration of the Implementation Path of Medical Quality Homogenization in Hospital Branches Based on SPO Theory / 中国医院管理

Setting up branches of public hospital is one of the important ways to allocate high-quality medical re-sources.However,medical quality homogenization is the core problem of multi-campus hospitals.As a result of dif-ferent qualities of clinical departments setting,personnel,supervision,information technology,etc.,it is difficult for hospital branches to achieve medical homogenization as the main campus.It elaborated the implementation path of medical quality homogenization in the construction of one hospital with four campuses in a large public hospital di-rectly under the National Health Commission based on SPO theory.In the three dimensions of structure,process and result,it described the specific practice of resource allocation,comprehensive supervision,performance evalua-tion and improvement,etc,thus to discuss the medical management strategies of different types of branches of hospitals,which is expected to be helpful to the construction of public hospitals with multi-campus.

Analysis of risk factors related to anastomotic leakage after rectal cancer surgery / 中国现代医生

Objective To investigate the risk factors related to postoperative anastomotic leakage(AL)of rectal cancer.Methods The clinical data of 392 patients with rectal cancer diagnosed and treated in Linyi People's Hospital from January 2019 to December 2021 were retrospectively analyzed.They were divided into AL group(n=17)and non-AL group(n=375)according to whether AL occurred.The relevant clinical data of patients were collected,and the risk factors of postoperative AL in rectal cancer patients were analyzed by binary Logistic regression.Results The proportion of body mass index(BMI)≥25kg/m2,preoperative intestinal obstruction,perioperative blood transfusion history,operation duration≥3h and postoperative white blood cell count≥10×109/L in AL group were significantly higher than those in non-AL group(P<0.05).Binary Logistic regression analysis showed that BMI≥25kg/m2,preoperative intestinal obstruction,and operation duration≥3h were all independent risk factors for postoperative AL in rectal cancer patients(P<0.05).Conclusion Patients with rectal cancer who are obese,have preoperative intestinal obstruction,and have long operation duration have a higher risk of postoperative AL.Corresponding preventive measures should be taken according to the above risk factors to reduce the incidence of AL and improve the quality of life of patients.

Effectiveness of a whole-process health education model among inpatients with ascites type of advanced schistosomiasis / 中国血吸虫病防治杂志

Objective To evaluate the effectiveness of a whole-process health education model among inpatients with ascites type of advanced schistosomiasis. Methods A “admission-hospitalization-discharge” whole-process health education model was created, 101 inpatients with ascites type of advanced schistosomiasis were given the whole-process health education. The scores of schistosomiasis control knowledge, attitudes towards schistosomiasis control and healthy behaviors, and awareness of schistosomiasis control knowledge, correct rate of attitudes towards schistosomiasis control and correct rate of healthy behaviors were compared among inpatients with ascites type of advanced schistosomiasis before and after implementation of the whole-process health education. Results The scores of schistosomiasis control knowledge, schistosomiasis control attitudes and healthy behaviors were all significantly higher among inpatients with ascites type of advanced schistosomiasis after implementation of the whole-process health education than before implementation (Z = −7.688, −3.576 and −4.328, all P values < 0.01). In addition, the awareness of schistosomiasis control knowledge increased from 54.3% to 82.7% (χ2 = 188.886, P < 0.01), and the correct rate of attitudes towards schistosomiasis control increased from 88.4% to 98.0% (χ2 = 22.001, P < 0.01), while the correct rate of healthy behaviors increased from 48.2% to 59.7% (χ2 = 11.767, P < 0.01). Conclusions The whole-process health education model may remarkably improve the awareness of schistosomiasis control knowledge and promote the formation of positive attitudes towards schistosomiasis control and correct behaviors among inpatients with ascites type of advanced schistosomiasis, which is of great significance to facilitate patients’ cure.

Clinical significance of PDGFRβ gene testing in hematological tumors / 中华医学遗传学杂志

OBJECTIVE@#To explore the clinical and laboratory characteristics of hematological tumors with different types of abnormalities in platelet derived growth factor β (PDGFRβ) gene.@*METHODS@#A retrospective analysis was carried out on 141 patients with abnormal long arm of chromosome 5 (5q) and comprehensive medical history data from Changhai Hospital Affiliated to Naval Medical University from 2009 to 2020, and their clinical data were collected. R-banding technique was used for chromosomal karyotyping analysis for the patient's bone marrow, and fluorescence in situ hybridization (FISH) was used to detect the PDGFRβ gene. The results of detection were divided into the amplification group, deletion group, and translocation group based on FISH signals. The three sets of data column crosstabs were statistically analyzed, and if the sample size was n >= 40 and the expected frequency T for each cell was >= 5, a Pearson test was used to compare the three groups of data. If N < 40 and any of the expected frequency T for each cell was < 5, a Fisher's exact test is used. Should there be a difference in the comparison results between the three sets of data, a Bonferroni method was further used to compare the data.@*RESULTS@#In total 98 patients were detected to have PDGFRβ gene abnormalities with the PDGFRβ probe, which yielded a detection rate of 69.50% (98/141). Among these, 38 cases (38.78%) had PDGFRβ gene amplifications, 57 cases (58.16%) had deletions, and 3 (3.06%) had translocations. Among the 98 cases, 93 were found to have complex karyotypes, including 37 cases from the amplification group (97.37%, 37/38), 55 cases from the deletion group (96.49%, 55/57), and 1 case from the translocation group (33.33%, 1/3). Analysis of three sets of clinical data showed no significant gender preponderance in the groups (P > 0.05). The PDGFRβ deletion group was mainly associated with myeloid tumors, such as acute myeloid leukemia (AML) and myelodysplastic syndrome (MDS) (P < 0.001). The PDGFRβ amplification group was more common in lymphoid tumors, such as multiple myeloma (MM) (P < 0.001). The PDGFRβ translocation group was also more common in myelodysplastic/myeloproliferative tumors (MDS/MPN).@*CONCLUSION@#Tumors with PDGFRβ gene rearrangement may exhibit excessive proliferation of myeloproliferative tumors (MPN) and pathological hematopoietic changes in the MDS, and have typical clinical and hematological characteristics. As a relatively rare type of hematological tumor, in addition to previously described myeloid tumors such as MPN or MDS/MPN, it may also cover lymphoid/plasma cell tumors such as multiple myeloma and non-Hodgkin's lymphoma.

A new form of familial platelet disorder caused by germline mutations in RUNX1 in a pedigree / 中华内科杂志

Objective: To investigate the clinical and biological characteristics of familial platelet disorder (FPD) with germline Runt-related transcription factor (RUNX) 1 mutations. Methods: Patients diagnosed with myelodysplastic syndrome (MDS) or acute myeloid leukemia (AML) with RUNX1 mutations from February 2016 to December 2021 in Wuhan No.1 Hospital underwent pedigree analysis and were screened for gene mutations (somatic and germline). Patients diagnosed with FPD with germline RUNX1 mutations were enrolled and evaluated in terms of clinical characteristics and biological evolution. Bioinformatics analysis was used to assess the pathogenicity of mutations and to analyze the effect of mutated genes on the function of the corresponding protein. Results: Germline RUNX1 mutations were detected in three out of 34 patients suffering from MDS/AML who had RUNX1 mutations. A pedigree of FPD with RUNX1 (RUNX1-FPD) c.562A>C and RUNX1 c.1415T>C mutations was diagnosed, and the mutations were of patrilineal origin. Bioinformatics analysis indicated that the locus at positions 188 and 472 in the AML-1G type of RUNX1 was highly conserved across different species, and that variations might influence functions of the proteins. The mutations were evaluated to be highly pathogenic. Of the nine cases with germline RUNX1 mutations: two patients died due AML progression; one case with AML survived without leukemia after transplantation of hemopoietic stem cells; four patients showed mild-to-moderate thrombocytopenia; two cases had no thrombocytopenia. During the disease course of the proband and her son, mutations in RUNX1, NRAS and/or CEBPA and KIT appeared in succession, and expression of cluster of differentiation-7 on tumor cells was enhanced gradually. None of the gene mutations correlated with the tumor were detected in the four cases not suffering from MDS/AML, and they survived until the end of follow-up. Conclusions: RUNX1-FPD was rare. The mutations c.562A>C and c.1415T>C of RUNX1 could be the disease-causing genes for the family with RUNX1-FPD, and these mutations could promote malignant transformation. Biological monitoring should be carried out regularly to aid early intervention for family members with RUNX1-FPD.

Clinical analysis of seven cases of hemophagocytic lymphohistiocytosis secondary to cutaneous T-cell lymphoma / 中华皮肤科杂志

Objective:To investigate clinical and laboratory characteristics of secondary hemophagocytic lymphohistiocytosis (sHLH) associated with secondary cutaneous T-cell lymphoma (CTCL) .Methods:CTCL patients with clinically suspected sHLH were collected from Department of Hematology, Wuhan No.1 Hospital from January 2016 to October 2021, and were evaluated according to the HLH-2004 diagnostic criteria and HScore.Results:Seven CTCL patients were confirmedly diagnosed with sHLH, including 2 with primary cutaneous γδT-cell lymphoma (PC-GDTCL) , 3 with cutaneous extranodal natural killer/T-cell lymphoma (C-ENKTCL) , and 2 with primary cutaneous anaplastic large cell lymphoma (PC-ALCL) . All the 7 patients received chemotherapy, but 6 died finally, and the median overall survival duration was 26.5 days (range: 14 - 60 days) after the confirmed diagnosis of CTCL complicated by sHLH. HLH-related gene mutations, which were located in the PRF1 and LYST genes, were identified in 2 patients; lymphoma-related gene mutations were identified in the KRAS and KMT2D genes in 1 PC-GDTCL patient,and in the JAK3 and SAMHD1 genes in another PC-GDTCL patient.Conclusions:CTCL complicated by sHLH usually progresses rapidly, so early diagnosis and treatment are needed. Bone marrow biopsy and mutation screening of lymphoma- and HLH-related genes at initial diagnosis and during disease progression may facilitate early diagnosis.

Research status of screening and evaluation tool in pediatric delirium / 中国小儿急救医学

Early identification and intervention is very important in pediatric delirium.The pediatric confusion assessment method for the ICU and the cornell assessment of pediatric delirium are recommended to screen and evaluate pediatric delirium.We can also choose the appropriate tool according to children′s age, anesthesia status and drug use.Objective evaluation tool has been investigated as well, including biomarkers, imaging studies, electroencephalogram and so on.Electroencephalogram has some typical features, which is related to the occurrence of delirium.For the further research, we should look deep into quantitative electroencephalogram and multimodality model to evaluate and predict delirium.

H1 Linker Histone Gene Regulates Lifespan via Dietary Restriction Pathways in Caenorhabditis elegans / 实验动物与比较医学

Objective To reveal the physiological function of H1 linker histone gene (hil-1) and its molecular mechanism for regulating the lifespan in Caenorhabditis elegans (C. elegans).MethodsC. elegans was used as a model organism and hil-1 gene was knock-down, knock-out and over-expressed via RNA interference technology, hil-1(gk229) mutants backcross purification and microinjection technology. Then the survival and oviposition of C. elegans were observed. Physiological tests including heat shock test, paraquat stress test and heavy metal Cr6+ stress test were conducted to evaluate the stress resistance of hil-1 mutants. After constructing a dual mutant nematode, real-time fluorescence quantitative PCR (RT-qPCR) was used to further identify the signaling pathways and target sites associated with hil-1 gene regulatory lifespan.ResultsCompared with wild-type N2 worms, the lifespan of C. elegans of RNA interference and hil-1(gk229) mutants were significantly shortened (P<0.001), while overexpression of hil-1 in the whole body increased lifespan (P<0.05). The tolerance of hil-1(gk229) mutants to heat stress and oxidative stress was significantly decreased (P<0.001, P<0.05), but the tolerance to heavy metals was not different compared to wild-type N2 worms (P>0.05). In addition, the developmental cycle of hil-1(gk229) mutants was shortened and the time of oviposition was advanced (P<0.001), but there was no significant change in total number of oviposition (P>0.05). After feeding hil-1 RNA interference bacteria to eat-2(ad465) mutants, the down-regulation of hil-1 expression did not affect the lifespan of eat-2(ad465) mutants (P>0.05). Compared with wild-type N2 worms, the expression level of daf-16 in hil-1(gk229) mutants was significantly down-regulated (P<0.001), and the expressions of downstream genes, mtl-1 and ctl-1, were also down-regulated (P<0.05, P<0.001). Compared with daf-2(e1370) mutants, the lifespan of daf-2 (e1370); hil-1(gk229) mutants did not shortened (P>0.05). Compared with daf-16(mu86) mutants, the lifespan of daf-16(mu86); hil-1(gk229) mutants was significantly shortened (P<0.001). The knockdown of hil-1 via RNA interference technology, specifically in epidermis and intestine, was sufficient for lifespan reduction (P<0.001).Conclusion The deletion of hil-1 gene significantly shortened the lifespan of C. elegans and decreased the tolerance to heat and oxidative stress. The hil-1 gene regulates the lifespan of C. elegans via dietary restriction pathway and acts mostly in epidermis and intestine.

Clinical analysis of 244 cases with abdominal wall endometriosis / 中华妇产科杂志

Objective: To investigate the clinical characteristics, diagnosis, treatment, outcomes and prognostic factors of abdominal wall endometriosis (AWE). Methods: A total of 265 AWE patients who underwent surgical treatment in The First Affiliated Hospital of Anhui Medical University from January 2010 to April 2023 were retrospectively selected, and 244 patients had complete follow-up data. According to different depth of lesions, the enrolled patients were divided into three types: type Ⅰ (subcutaneous fat layer, n=30), type Ⅱ (anterior sheath muscle layer, n=174) and type Ⅲ (peritoneum layer, n=40). The general clinical features, perioperative conditions, recurrent outcome and prognostic factors were analyzed in three types. Results: (1) Compared with type Ⅲ patients, the age of onset, parity and incidence of pelvic endometriosis were significantly decreased in type Ⅱ patients [(32.0±4.0) vs (30.0±4.6) years, 1.6±0.6 vs 1.4±0.5, 10.0% (4/40) vs 1.7% (3/174), respectively; all P<0.05], while the proportion of patients with transverse incision was significantly increased [37.5% (15/40) vs 67.3% (115/171); P<0.01]. The first symptoms of type Ⅰ and type Ⅱ were mainly palpable mass in the abdominal wall [73.3% (22/30), 63.2% (110/174), respectively], but the first symptom of type Ⅲ was pain in the abdominal wall [55.0% (22/40); all P<0.05]. (2) No matter the results of preoperative B-ultrasound or intraoperative exploration, the lesion diameters of type Ⅰ, type Ⅱ and type Ⅲ showed significant upward trends (all P<0.05). The proportions of lesion diameter≥3 cm in type Ⅱ and type Ⅲ [67.8% (118/174), 80.0% (32/40)] were significantly higher than that in type Ⅰ (all P<0.05). The median operation time and blood loss of type Ⅰ and Ⅱ were significantly lower than those of type Ⅲ (type Ⅰ vs type Ⅲ: 37.5 vs 50.0 minutes, 10 vs 20 ml, all P<0.05; type Ⅱ vs type Ⅲ: 35.0 vs 50.0 minutes, 10 vs 20 ml, all P<0.05). (3) The median follow-up time was 49 months, the overall symptom remission rate was 98.4% (240/244), and the recurrence rate was 7.0% (17/244). There were no significant differences in recurrence rate and recurrence free time among three types (all P>0.05). Multivariate regression analysis showed that the depth, number, diameter of lesions and postoperative adjuvant medication were not significant factors for postoperative recurrence (all P>0.05). Conclusions: The clinical manifestations of type Ⅲ are the most serious, including obvious abdominal pain symptoms, larger lesion diameter, prolonged operation time, increased intraoperative blood loss and increased incidence of pelvic endometriosis. Complete resection of lesions is an effective treatment for AWE, with high symptom remission rate and low recurrence rate. The depth, number, diameter of lesions and postoperative adjuvant medication are not risk factors for recurrence.

Mechanism of gambogenic acid inhibiting the proliferation of melanoma based on RNA-seq sequencing technology / 中国临床药理学与治疗学

AIM: By analyzing the effect of gambogenic acid (GNA) on the mRNA expression profile of melanoma xenograft model mice, the possible mechanism of GNA in the treatment of melanoma was explored. METHODS: The inhibitory effect of GNA on melanoma cells was studied by measuring the cell survival rate by MTT method in vitro and observing the cell morphology under an inverted microscope. In the in vivo experiment, the effect of GNA on the growth of xenografted tumors in melanoma mice was observed by comparing the results of HE (hematoxylin-eosin) staining and immunohistochemistry (Ki-67), and the tumor weight and tumor weight ratio were recorded. RNA-seq sequencing technology was used to sequence the GNA medium-dose group and the model group, and the screened mRNAs were analyzed by GO and KEGG, and finally the screening results of differentially expressed genes were verified by real-time quantitative fluorescent PCR. RESULTS: After different doses of GNA acted on the melanoma mouse model, a large area of necrosis occurred in the tumor tissue of the model mouse, and the tumor growth was significantly inhibited. A total of 36 differentially expressed mRNAs were identified by mRNA sequencing, of which 30 were up-regulated and 6 were down-regulated. The possible functions of the mRNAs were predicted according to the genomic adjacency analyzed by GO and KEGG. The expression of the selected differential mRNAs was further verified by real-time quantitative PCR technology. The results showed that the mRNA expressions of Cidec, Ces1d, Mylk4, and Igkv9-123 were up-regulated, and the mRNA expressions of Ryr3 and Hapln1 were down-regulated. CONCLUSION: GNA can inhibit the proliferation of melanoma cells in vitro and in vivo, and its mechanism is related to the regulation of cytokine-cytokine receptor interaction, NF-κB, MAPK, and other pathways of mRNA expression.

Chemotherapy Combined with Venetoclax Followed by Allo-Hematopoietic Stem Cell Transplantation for Treatment of Blastic Plasmacytoid Dendritic Cell Neoplasm / 中国实验血液学杂志

OBJECTIVE@#To investigate the efficacy and safety of chemotherapy combined with venetoclax followed by allogeneic hematopoietic stem cell transplantation (allo-HSCT) for the treatment of blastic plasmacytoid dendritic cell neoplasm (BPDCN).@*METHODS@#The clinical data of 3 patients with BPDCN undergoing allo-HSCT in Department of Hematology, Wuhan First Hospital from July 2017 to November 2021 were collected and retrospectively analyzed.@*RESULTS@#Among the 3 patients, there were 1 male and 2 females, aged 27-52 years old. Skin lesions were observed during initial diagnosis, and it could also be characterized by acute leukemia. Characteristic molecular markers of tumor cells, such as CD4, CD56, CD123, and CD303 were positive. In addition, the expression detection of Bcl-2 in 3 patients were positive. Chemotherapy combined with venetoclax in the initial induction of chemotherapy (1 case) or disease recurrence and progress (2 cases) was performed. There were 2 cases evaluated as complete remission (CR) and 1 case as partial remission (PR) before allo-HSCT. The patients all received a nonmyeloablative conditioning without total body irradiation (TBI). The prevention programme of graft-versus-host disease (GVHD) was antithymocyte globulin + mycophenolate mofetil + cyclosporin A/FK506 ± methotrexate. The number of mononuclear cell (MNC) count was (16.73-18.35)×108/kg, and CD34+ cell count was (3.57-4.65)×106/kg. The 3 patients were evaluated as CR after allo-HSCT (+21 to +28 d), the donor-recipient chimerism rate was 100%, and Ⅲ-Ⅳ GVHD was not observed. One patient died at +50 d after transplantation, two patients were followed up for 28 months and 15 months, respectively, and achieved disease-free survival (DFS).@*CONCLUSIONS@#BPDCN is a highly aggressive malignant tumor with poor prognosis. Chemotherapy combined with venetoclax followed by allo-HSCT may lead to long-term DFS or even cure. Post-transplant maintenance is still unclear.

Regulation of Neuro-Microenvironment on Mitochondrial Mass of Hematopoietic Stem and Progenitor Cells / 中国实验血液学杂志

OBJECTIVE@#To study the effects of the neuro-microenvironment on the mass of mitochondria in hematopoietic stem and progenitor cells (HSPC), and to understand the potential mechanisms how nerve regulates HSPC.@*METHODS@#6-hydroxydopamine (6-OHDA) and capsaicin were used to interfere with the function of sympathetic nerve and nociceptive nerve in mitochondria-GFP reporter mice, respectively. The fluorescence intensity of GFP in bone marrow and spleen was measured by flow cytometry. The GFP median fluorescence intensity (MFI) of HSPC in normal bone marrow and spleen was analyzed and compared. The changes of the mitochondrial mass in HSPCs in each group after denervation were compared.@*RESULTS@#Hematopoietic stem cells (HSC) had the highest mito-GFP MFI in steady-state (49 793±1 877), and the mito-GFP MFI gradually decreased during the differentiation of HSCs. Compared with control group, pharmaceutical nociceptive denervation significantly increased the mito-GFP MFI of bone marrow multipotent progenitor-1 (MPP1, 50 751±420 vs 44 020±510) and LKS- cells (15 673±65 vs 13 979±103); pharmaceutical sympathetic denervation significantly reduced the mito-GFP MFI of bone marrow LKS+ cells (21 667±351 vs 29 249±973).@*CONCLUSION@#Sympathetic and nociceptive nerves can regulate the mass of mitochondria in HSPC and affect the function of HSPCs.

Clinical Analysis of Patients with Blastic Plasmacytoid Dendritic Cell Neoplasm / 中国实验血液学杂志

OBJECTIVE@#To explore the clinical characteristics, treatment, and prognosis of patients with blastic plasmacytoid dendritic cell neoplasm(BPDCN).@*METHODS@#Clinical data of 5 patients diagnosed with BPDCN in Wuhan First Hospital and Wuhan Tongji Hospital from June 2016 to November 2021 were retrospectively analyzed.@*RESULTS@#Among the 5 patients, 3 were male and 2 were female, with a median age of 28(10-52) years old. Four patients showed obvious skin damage at the initial diagnosis; the other one showed clinical manifestations of acute leukemia rather than obvious skin damage at the initial diagnosis, but infiltrated skin when the disease relapsed after treatment. Other infiltration sites of lesions included bone marrow (2/5), peripheral blood (2/5), lymph nodes (3/5), liver and spleen (2/5). All patients had no clinical manifestation of central nervous system infiltration. Tumor cell specific immune markers CD4, CD56, CD123 were all positive, and the median Ki-67 index was 70%. TET2, ASXL1 and NRAS gene mutations were found respectively in 3 patients by next-generation sequencing technique (NGS). ALL-like, AML-like and invasive NK/T cell lymphoma-like first-line induction chemotherapy regimens were used for the patients. One patient died of severe complications during the early stage of chemotherapy, 3 patients were evaluated as CR, and 1 patient was evaluated as PR. 2 patients were recurred and progressed after induction of chemotherapy, and one of them was evaluated as CR after re-treatment. One patient received autologous hematopoietic stem cell transplantation (auto-HSCT) and got long-term survival (OS 87 months). 3 patients received allogeneic hematopoietic stem cell transplantation (allo-HSCT), of which one died of transplantation related complications, and 2 cases survived. The median follow-up time of 4 patients with evaluable efficacy was 28.5(9-84) months, the median OS time was 31.5(10-87) months.@*CONCLUSION@#BPDCN is a highly heterogeneous malignant tumor with a poor prognosis. HSCT, especially allo-HSCT can significantly improve the prognosis of BPDCN patients.

Establishment of Poly （I∶C）-induced Cytokine Storm Model in Mice and Intervention Effect of Artesunate and Qingfei Paidu Decoction / 中国实验方剂学杂志

ObjectiveTo observe the intervention effect of artesunate （ART） and Qingfei Paidu decoction （QFPD） on the mouse model of cytokine storm （CS） induced by viral mimic Poly （I∶C）. MethodEighty-four SPF male BALB/c mice were randomly divided into seven groups， with 12 mice in each group. Mice， except for those in the blank group （n=12）， were subjected to CS model induction by tail vein injection of Poly （I∶C） at 15 mg·kg-1， followed by drug treatments of low-dose ART （ART-l， 10 mg·kg-1）， medium-dose ART （ART-m， 20 mg·kg-1）， high-dose ART （ART-h， 40 mg·kg-1）， Qingfei Paidu Decoction （QFPD， 2.4 g·kg-1）， and dexamethasone （DXM， 10 mg·kg-1）. After 6 hours， lung tissues， bronchoalveolar lavage fluid （BALF）， spleen， lung， and peripheral blood were collected. The lung and spleen indexes were calculated and the number of inflammatory cells in BALF was detected. The pathological changes in lung tissues were observed by hematoxylin-eosin （HE） staining and the levels of tumor necrosis factor-α （TNF-α）， interferon-γ （IFN-γ）， interleukin-1β （IL-1β）， and IL-6 in BALF were detected by enzyme-linked immunosorbent assay （ELISA）. The expression of immune cells in BALF and peripheral blood was detected by flow cytometry. ResultThe analysis of lung and spleen indexes showed that compared with the blank group， the model group showed increased lung and spleen indexes to varying degrees （P<0.05）. Compared with the model group， the ART groups showed reduced spleen index （P<0.05） and the ART-l group showed reduced lung index （P<0.05）. Additionally， the QFPD group showed reduced lung and spleen indexes （P<0.05）. ELISA results showed that except for TNF-α， the levels of IFN-γ， IL-1β， and IL-6 in the model group increased compared with those in the blank group （P<0.05）. Compared with the model group， the ART-l group and the QFPD group showed reduced content of TNF-α （P<0.05）， and all groups with drug intervention showed reduced content of IFN-γ， IL-1β， and IL-6 （P<0.05）. The number of inflammatory cells in BALF showed a downward trend in the model group， and the number of cells increased in the groups with drug intervention except for the DXM group （P<0.05）. Flow cytometry showed that compared with the blank group， the model group showed decreased number of CD3 in the peripheral blood （P<0.05）， increased Ly-6G and F4/80 （P<0.05）， decreased expression of CD45， CD3， and F4/80 in BALF （P<0.05）， and increased expressions of Ly-6G （P<0.05）. Compared with the model group， the ART groups and QFPD group showed increased CD45 content in peripheral blood （P<0.05）， decreased Ly-6G and F4/80 content （P<0.05）， increased CD45 and F4/80 content in BALF （P<0.05）， and decreased expression of Ly-6G （P<0.05）. ConclusionART and QFPD have a good protective effect on Poly （I∶C）-induced CS in mice， and the mechanism is related to the effective intervention in immune cell disorder.

Measures of anterior hip coverage in adult patients with hip dysplasia / 中华骨科杂志

Hip dysplasia occurs when the acetabulum does not cover the femoral head sufficiently, causing hip instability and pain. Acetabular coverage of the femoral head is an important index to evaluate the stability of the hip joint. Further, anterior hip coverage is as important as lateral coverage in the stability of the hip joint. However, the measurements of anterior hip coverage received less attention and enjoyed less consensus than those of lateral hip coverage. The existing measurements of the adult hip joint can be divided into 2 categories, namely three-dimensional (3D) measurements and two-dimensional (2D) measurements. 2D measurements include the anterior central-edge (ACE) angle and the anterior acetabular head index on false-profile radiographs, the ACE angle on sagittal CT radiographs, and the anterior wall index, the rule of thirds, the crossover sign and the crossover index on standing pelvic anteroposterior radiographs. Among the above indexes, the ACE angle and anterior acetabular head index can be directly measured on false-profile radiographs, which can reproduce the weight-bearing function of the standing hip joint. Currently, these indexes are widely used in the clinical practice to determine the stability of hip joints. Some evidence indicated correlation of these indexes with satisfied clinical outcomes. The ACE angle on CT sagittal radiographs acquired from CT data reproduces the patients' status in the supine position. It is used for determining the potential femoroacetabular impingement after hip correction. The anterior wall index, rule of thirds, crossover sign and crossover index are obtained on standing pelvic radiographs, which can reproduce the weight-bearing status of hip joints and reduce the need for a false-profile radiograph. The surgeon can reach a preliminary judgment from these measurements in a short time. However, due to some potential influence factors, the accuracies of these 2D measurement indexes are limited. Further, their clinical relevance according to published studies is not consistent. 3D measurements include real 3D measurement based on CT and the simulated 3D (2.5D) measurement based on statistical models. The details of acetabular morphology are most accurately described in 3D measurements. They are used to determine the influence of acetabular osteotomy on the range of motion and to predict the risk of postoperative iatrogenic femoroacetabular impingement. Although 2.5D measurement based on statistical models is more accurate than that based on 2D measurements, it is still based on the anteroposterior radiographs of the pelvis. Therefore, the drawback caused by using anteroposterior radiographs cannot be eliminated completely. In summary, the ACE angle on false-profile radiographs is the most commonly method in clinical practice.

Effects of powder size and pre-sintering heating rate on dental recycled zirconia / 中华口腔医学杂志

Objective: To evaluate the effects of pre-sintering heating rate and powder size on dental recycled zirconia. Methods: Recycled zirconia powders were sieved to obtain the large (50 μm<particle diameter≤125 μm) and small (particle diameter≤50 μm) particles, these powders were then formed into green bodies. According to the pre-sintering heating rates, the recycled-zirconia green bodies were divided into 3 groups: group A, pre-sintering heating rate of 2 ℃/min; group B, pre-sintering heating rate of 5 ℃/min; group C, pre-sintering heating rate of 8 ℃/min. The relative density open porosity and machinability of the recycled zirconia pre-sintered bodies were evaluated and compared with the commercial zirconia pre-sintered bodies. Zirconia pre-sintered bodies were then fully sintered according to the manufacturer's instructions. The relative density, open porosity, linear shrinkage and flexural strength of fully sintered zirconia were further compared. The microstructure of fracture surfaces and the crystalline structure were analyzed by scanning electron microscope and X-ray diffractometer, respectively. Results: With the same particle size, the recycled zirconia pre-sintered at different heating rates showed no significant differences in the relative densities, and the open porosities (P>0.05). When the pre-sintering heating rates were 2 ℃/min, 5 ℃/min, and 8 ℃/min, the flexural strengths of the large-particle recycled zirconia were (421.2±54.7), (444.2±70.1) and (427.5±68.4) MPa, the flexural strengths of the small-particle recycled zirconia were (750.1±74.1), (777.2±95.5) and (746.7±73.0) MPa, respectively. The flexural strength of commercial zirconia was (988.4±129.8) MPa. The flexural strengths of the recycled zirconia were significantly lower than that of the commercial zirconia (P<0.05). At the same pre-sintering heating rate, the flexural strengths of the small-particle recycled zirconia were significantly higher than that of the large-particle recycled zirconia (P<0.05). Conclusions: Compared with the large particles, small-particle recycled zirconia powders can effectively improve the properties of recycled zirconia, while the pre-sintering heating rate has no effect on the properties of the recycled zirconia.

Acupuncture at sphenopalatine ganglion combined with conventional acupuncture for episodic cluster headache: a randomized controlled trial / 中国针灸

OBJECTIVE@#To observe the clinical effect of acupuncture at sphenopalatine ganglion combined with conventional acupuncture for episodic cluster headache (CH).@*METHODS@#One hundred and eighty patients with episodic CH were randomly divided into a combined group (60 cases, 3 cases dropped off)，an acupuncture group (60 cases, 2 cases dropped off) and a sphenopalatine ganglion group (60 cases, 2 cases dropped off and 1 case was removed). The patients in the acupuncture group were treated with conventional acupuncture at Touwei (ST 8), Yintang (GV 24+), Yangbai (GB 14), Hegu (LI 4), etc., once a day, 6 times a week. The patients in the sphenopalatine ganglion group were treated with acupuncture at sphenopalatine ganglion, once every other day, 3 times a week. On the basis of the conventional acupuncture, the combined group was treated with acupuncture at sphenopalatine ganglion once every other day. Two weeks were taken as a course of treatment, and 3 courses of treatment were required in the 3 groups. The score of visual analogue scale (VAS), the number of headache attacks per week, the duration of each headache attack and the score of migraine-specific quality of life questionnaire version 2.1 (MSQ) were observed before and after treatment and in follow-up of 3 months after treatment. The clinical efficacy of each group was compared.@*RESULTS@#After treatment and in follow-up, the VAS score of headache, the number of headache attacks per week, the duration of each headache attack, and each various scores and the total score of MSQ of each group were lower than those before treatment (P<0.01). Except that the number of headache attacks per week in the combined group was lower than the sphenopalatine ganglion group (P<0.01), other indexes in the combined group were lower than the other two groups (P<0.05, P<0.01). The total effective rate in the combined group was 93.0% (53/57), which was higher than 75.9% (44/58) in the acupuncture group and 73.7% (42/57) in the sphenopalatine ganglion group（P<0.05, P<0.01).@*CONCLUSION@#Acupuncture at sphenopalatine ganglion combined with conventional acupuncture could reduce the degree of pain in patients with episodic CH, reduce the number and duration of headache attacks, and improve the quality of life of patients. It is more effective than simple conventional acupuncture or acupuncture at sphenopalatine ganglion alone.

Ixazomib-Based Regimen Followed by Autologous Hematopoietic Stem Cell Transplantation in the Treatment of POEMS Syndrome / 中国实验血液学杂志

OBJECTIVE@#To investigate the safety and efficacy of a new proteasome inhibitor Ixazomib followed by autologous hematopoietic stem cell transplantation (AHSCT) in the treatment of POEMS syndrome.@*METHODS@#The clinical manifestations, diagnosis and treatment process and follow-up results of 4 patients with POEMS syndrome who were treated with Ixazomib-based regimen combined with AHSCT in Wuhan No.1 Hospital from February 2018 to July 2020 were analyzed retrospectively. All patients were male, aged from 37-54 years old, with varying degrees of peripheral neuropathy, organ enlargement (liver, spleen or lymph nodes), circulatory overload (peripheral edema and/or pleural effusion), osteosclerosis, endocrine diseases (thyroid, gonads, etc.), skin changes (pigmentation, hemangioma, white nails, etc.), M protein, papilledema and other clinical manifestations and characteristics at the time of initial treatment. Two patients were pathologically diagnosed as hyaline vascular Castleman disease by lymph node biopsy. Three patients underwent lumbar puncture examinations and all showed elevated cerebrospinal fluid protein. All patients received at least 2 cycles of sequential AHSCT after induction chemotherapy based on ixazomib. The follow-up time was 10-28 months, and the median follow-up time was 16 months.@*RESULTS@#All cases survived. The complications were controllable during the treatment. Moreover, the clinical symptoms related to the disease were improved to a certain extent after the treatment. The levels of vascular endothelial growth factor (VEGF) showed a gradual decline.@*CONCLUSION@#Ixazomib combined with AHSCT is safe and effective in the treatment of POEMS syndrome.