Objective: To explore the treatment options for congenitally missing teeth in patients with ectodermal dysplasia and provide a clinical reference. Methods: A patient with ectodermal dysplasia with a concave midface, anterior protrusion of the chin, and underdevelopment of the lower third of the face presented with congenital loss of multiple maxillary teeth, malocclusion of the remaining teeth, congenital loss of mandibular dentition, small dental arches, and upper and lower alveolar bone hypoplasia. The patient was treated by means of a removable partial maxillary prosthesis, implants in the anterior region of the lower mandible designed with the assistance of digital guides, and bar-clamped implant-overlay prostheses. A literature review of the protocol for the treatment of this condition was also conducted. Results: In addition to good retention and stability after denture wear, an excellent occlusal relationship, improvement of the patient's facial appearance, including upper and lower lip fullness, more equal balancing of the lower and middle 1/3 of the face, and improved masticatory function were achieved. The results of the literature review showed that patients with ectodermal dysplasia who are congenitally edentulous usually have a complex intraoral situation that makes restoration difficult, and common restorative modalities for these patients include fixed bridges, removable partial dentures, complete dentures, overdentures, and implant prostheses, which need to be selected according to the actual intraoral situation of each patient. Currently, there is no consensus on the treatment of congenitally missing teeth in patients with ectodermal dysplasia, and some scholars have suggested that fixed restorations be recommended for patients with fewer missing teeth, while the option of removable or implant-covered denture restorations should be given to patients with more missing teeth, with removeable prostheses for underage patients that are replaced with permanent fixed prostheses when the jaws have stabilized. Conclusion In patients with ectodermal dysplasia with congenital tooth loss, all factors should be taken into account, and an individualized restorative plan should be developed.

Objective:To explore the short-term efficacy of fixation with a 3D printed individualized custom-made plate in the treatment of elderly patients with periprosthetic femoral fracture.Methods:Retrospectively analyzed were the 5 elderly patients with periprosthetic femoral fracture who had been treated by fixation with a 3D printed individualized custom-made plate from January 2022 to July 2022 at Department of Orthopaedics and Traumatology, Beijing Jishuitan Hospital. There were 3 males and 2 females, aged 81, 86, 77, 91 and 87 years, respectively. One left and 4 right limbs were affected. Vancouver classification: type B1 ( n=3), type B2 ( n=1), and type C ( n=1). The time from operation to injury was 5, 6, 10, 5 and 7 days, respectively. Preoperatively, the femur affected, prosthesis and individualized plate with a greater trochanteric hook, loop cable channel and bone-like trabecular microporous structure were custom-made by 3D printing according to 1:1 models. Virtual operations were simulated to formulate surgical protocols. The operation time, length of surgical incision, intraoperative blood loss and transfusion, hospital stay, hip function and complications at the last follow-up were recorded. Results:The 5 patients were followed up for 12, 7, 10, 3 and 6 months, respectively. There were no events of superficial incision or deep prosthesis infection. Respectively, the operation time was 1.8, 1.7, 2.3, 2.0 and 3.3 h; the length of surgical incision 31, 30, 38, 27 and 30 cm; the intraoperative bleeding volume 400, 300, 300, 500 and 600 mL; the length of hospital stay 8, 9, 15, 14 and 11 d. Four patients received intraoperative blood transfusion of 300, 900, 150 and 1, 050 mL, respectively. One patient died of a heart attack 3 months after discharge; another patient developed dyskinesia at the contralateral limb 3 months after discharge due to cerebral infarction and died of recurrent cerebral infarction 7 months after discharge. At the last follow-up, the Harris hip scores of 3 patients were 86, 77 and 69 points, respectively. None of the patients had complications like breakage or loosening of implants.Conclusion:In the treatment of elderly patients with periprosthetic femoral fracture, fixation with a 3D printed individualized custom-made plate may lead to fine limb function and good short-term curative efficacy.

Objective To investigate the clinical features of drug-induced liver injury (DILI) due to Tripterygium wilfordii preparation and concomitant medications in patients with rheumatoid arthritis (RA). Methods A retrospective analysis was performed for the clinical data of 112 RA patients with DILI caused by Tripterygium wilfordii preparations and concomitant medications who were treated in Honghu Hospital of Traditional Chinese Medicine from January 2014 to December 2019, and demographic data and the clinical features of DILI were observed to explore the influence of concomitant medications and underlying diseases on DILI. The Kruskal-Wallis H test was used for comparison of continuous data between multiple groups and further comparison between two groups. Results All 112 patients had a mean age of 48.13±14.38 years, and there were 81 female patients (72.32%). The most common underlying disease was nonalcoholic fatty liver disease (NAFLD) in 8 patients (7.14%), and as for concomitant medications, 70 patients (62.50%) were treated with Tripterygium wilfordii preparation combined with non-steroid anti-inflammatory drug (NSAID) or disease-modifying anti-rheumatic drug (DMARD). The main clinical manifestation was joint pain in 110 patients (98.21%). Among the 112 patients, 102 (91.07%) had abnormal results of liver biochemical examinations; 66 patients (58.93%) had an RUCAM score of 6-8 points, and 110 patients (98.21%) had mild (grade 1) liver injury. After liver-protecting treatment (for less than 6 months in all patients), all patients had an improvement in liver function without aggravation or death. The Tripterygium wilfordii preparation+glucocorticoid+NSAID/DMARD group with 22 patients had significant increases in the serum levels of alkaline phosphatase (ALP) and gamma-glutamyl transpeptidase (GGT) compared with the Tripterygium wilfordii preparation+NSAID/DMARD group with 70 patients ( P < 0.05). The 8 patients with NAFLD had a significantly greater increase in serum alanine aminotransferase compared with the 90 patients without underlying diseases ( P < 0.05). Conclusion RA patients may develop DILI due to Tripterygium wilfordii preparation and concomitant medications, which is commonly observed in middle-aged women. Joint pain is the main clinical manifestation, and patients tend to have mild liver injury and good prognosis without marked chronicity. More severe liver injury is observed in patients with combined medication of glucocorticoids and NSAID/DMARD or those with the underlying disease of NAFLD.

Although widely applied in treating hematopoietic malignancies, transplantation of hematopoietic stem/progenitor cells (HSPCs) is impeded by HSPC shortage. Whether circulating HSPCs (cHSPCs) in steady-state blood could be used as an alternative source remains largely elusive. Here we develop a three-dimensional culture system (3DCS) including arginine, glycine, aspartate, and a series of factors. Fourteen-day culture of peripheral blood mononuclear cells (PBMNCs) in 3DCS led to 125- and 70-fold increase of the frequency and number of CD34⁺ cells. Further, 3DCS-expanded cHSPCs exhibited the similar reconstitution rate compared to CD34⁺ HSPCs in bone marrow. Mechanistically, 3DCS fabricated an immunomodulatory niche, secreting cytokines as TNF to support cHSPC survival and proliferation. Finally, 3DCS could also promote the expansion of cHSPCs in patients who failed in HSPC mobilization. Our 3DCS successfully expands rare cHSPCs, providing an alternative source for the HSPC therapy, particularly for the patients/donors who have failed in HSPC mobilization.
Antigens, CD34/metabolism* ; Hematopoietic Stem Cell Transplantation ; Hematopoietic Stem Cells ; Humans ; Leukocytes, Mononuclear/metabolism* ; Peptides/metabolism*

Objective: To establish a colloidal gold technique assay for the rapid detection of immunoglobulin(Ig) M and IgG antibodies against 2019 novel coronavirus (2019-nCoV) and to evaluate its clinical performance. Methods: A total of 278 patients who were treated at Wuhan Hankou Hospital and the People's Hospital of Honghu from February 12, 2020 to February 20, 2020 were collected. According to the diagnostic criteria, 89 patients were confirmed with 2019-nCoV nucleic acid positive diagnosis, and 189 were 2019-nCoV nucleic acid-negative suspected patients. A total of 273 medical examiners from Nanfang Hospital, Southern Medical University from 2015 to 2018 were selected as controls. The serum samples of patients were collected. 2019-nCoV nucleic proteins were obtained from prokaryotic expression vectors. Indirect IgM and IgG colloidal gold techniques were established by using recombinant N protein. 2019-nCoV nucleic acid detection by reverse transcription-polymerase chain reaction (RT-PCR) was used as control. Serum specimens were tested for 2019-nCoV IgM and IgG. The specificity and sensitivity of colloidal gold assay were analyzed. Results: The sensitivity and specificity of IgM detection reagents were 78.7% and 98.2%, respectively, those of IgG detection reagents were 73.0% and 99.3%, respectively, and those of IgM combined with IgG detection were 87.6% and 98.2%, respectively. For suspected patients with negative 2019-nCoV nucleic acid, the positive rates of IgM and IgG were 59.8% (113/189) and 52.9% (100/189), respectively, and the positive rate of IgM combined with IgG detection was 66.1% (125/189). Conclusion This reagent of 2019-nCoV antibodies detection (colloidal gold technique) fulfills the requirement for clinical application with high specificity and sensitivity, which can be served as a supplementary detection method for 2019-nCoV nucleic acid detection by RT-PCR.

Objective:To summarize our experience in prevention of COVID-19 infection in emergency and confined operations during the first 3 weeks after Spring Festival in 2020.Methods:From February 3rd to 23rd, 2020, 151 patients were admitted to Department of Orthopaedic Trauma, Beijing Jishuitan Hospital for emergency and confined operations. In this cohort, 125 patients were admitted to ordinary wards. They were 70 males and 55 females with an age of 51.1 years ± 14.9 years. Of them, 2 were subjected to emergency operation and 123 to confined operation. The mean time from injury to operation was 9.9 days ± 6.1 days. There were 26 cases in the senile wards, 7 males and 19 females with an age of 80.8 years ± 7.0 years all of whom underwent confined operations. The mean time from injury to operation was 8.4 days ± 6.3 days. The protocols for emergency diagnosis, admission, emergency and confined operations, postoperative rehabilitation and management of suspects with COVID-19 during the epidemic of COVID-19 were optimized according to Diagnosis and Treatment Protocols for Novel Coronavirus Pneumonia (Trial version 5), emergency responding pre-plans of our hospital, and our experience in Enhanced Recovery After Surgery (ERAS) as well.Results:The patients in the ordinary wards had a hospital stay of 6.8 days ± 4.6 days while those in the senile wards 5.1 days ± 2.0 days. Abnormal temperature (≥37.3 ℃) was observed perioperatively in 17 cases in the ordinary wards. It was absorption fever in all and appeared in 4 cases upon admission. Fever appeared in 11 patients in the senile wards and upon admission in 3 of them. One senile patient who had been diagnosed of normal pneumonia returned to normal temperature and remained stable conditions after antibiotic therapy. The other patients were free of complications related to COVID-19 during their hospital stay.Conclusion:The first-line medical staff working at emergency department, wards and surgical theaters must heighten their vigilance against COVID-19 infection and rigorously follow protocols for prevention of COVID-19 infection in their daily clinical practice.

Objective:To study the role of neutrophil density and molecular mechanism in neutrophils-mediated inflammatory response induced by monosodium urate (MSU) crystals.Methods:Polymorphonuclear neutrophils (PMNs) isolated from healthy human peripheral blood were treated with MSU crystals at different density (5×10 6/ml, 20×10 6/ml, 100×10 6/ml) in vitro. The mean fluorescence intensity (MFI) of PMNs and production of reactive oxygen species (ROS) were detected by flow cytometry. The distribution of MSU crystals was observed by polarized light microscopy. The neutrophil extracellular traps (NETs) formation was detected by immune fluorescence. The cytokines in cell supernatant were measured by beads assay including interleukin 1β (IL-1β) , tumor necrosis factor α (TNFα) , interleukin 8 (IL-8) , interferon inducible protein 10 (IP-10) , macrophage inflammatory protein 1 (MIP-1) , monokine induced by interferon-γ (MIG) , macrophage inflammatory protein 1α (MIP-1α) , macrophage inflammatory protein 1β (MIP-1β) . Results:(1) After MSU crystal intervention, the side scatters (SSC) of neutrophils with medium-cell density (20×10 6/ml) and high-cell density (100×10 6/ml) were 128±13 and 93±9 respectively, both significantly lower than 170±19 in low-cell density (5×10 6/ml) group.(2) Similarly, compared with low-cell density group, the MFI (lucifer yellow) of PMNs with high-cell density was 1.8±0.2, also significantly decreased ( P<0.05). When co-treated with oxygenated adenosine triphosphate (oxATP), MFI of PMNs were all enhanced consistently. (3) In MSU crystals stimulated PMNs, after adding 2′,7′-dichlorodihydrofluorescein diacetate, the MFI values were 0.85±0.32, 2.49±0.78, 4.54±1.02 in low cell density groups, medium cell density groups, and high cell density groups respectively, indicating that the generation of ROS was positively correlated with the increase of PMN density ( P<0.05). After the intervention of oxATP, the ROS production was significantly reduced. (4) MSU crystal induced NETs formation, especially at high cell density. NETs formation promotes MSU crystal aggregation, which could be partially overcome by oxATP pretreatment. (5) The expression of cytokines were all significantly decreased in the supernatant of PMNs at high cell density exposed to MSU crystals compared with PMNs at medium cell density ( P<0.05) . Conclusion:The PMN-mediated inflammation induced by MSU crystals is cell density dependent, and ATP may play a role in partially overcoming the process.

Objective: To compare the therapeutic effects between the anesthetic and non-anesthetic closed reduction protocols for distal radius fractures based on the concept of Enhanced Recovery After Surgery (ERAS). Methods: A prospective study was conducted in a cohort of 186 patients with distal radius fracture who had been admitted to the Department of Orthopaedic Trauma, Beijing Jishuitan Hospital from September 2018 to January 2019. The patients were divided into 2 groups depending on the choice by themselves. Of them, 72 (intervention group) underwent the standardized closed reduction under brachial block anesthesia based on the concept of ERAS while the other 114 (control group) conventional closed reduction under no anesthesia. The 2 groups were compared in terms of emergency reduction times, swelling scores, reoperation rate, splint removal time, functional outcomes by the Patient-Rated Wrist Evaluation (PRWE) and radiographic outcomes by the Lidström criteria. Results: The patients in both groups were followed up for 6 months. The reduction times were fewer in the intervention group than in the control group (1.1±0.1 versus 1.6±0.1, P<0.05). The reoperation rate was significautly lower in the intervention group than in the control group [2.8%(2/72) versus 12.3%(14/114), P< 0.05]. Reduction deteriorated the swelling condition. Compared with the control group, the swelling was significantly less in the intervention group (2.0±0.1 versus 2.6±0.1, P<0.05). The splint removal time for the intervention group (5.3±0.2 weeks) was significantly shorter than that for the control group (6.9±0.2 weeks) (P<0.05). The intervention group had significantly better PWRE scores than the control group (23.4±1.0 versus 30.3±1.1, P<0.05), but there was no significant difference between groups in the Lidström evaluation (P>0.05). Conclusion Compared with conventional closed reduction, the closed reduction under anesthesia based on the ERAS concept is an effective method for the emergency treatment of distal radius fracture, because it may minimize the patients’ pain experience, increase the rate of successful reduction, decrease the rate of reoperation, shorten the splint fixation time and gain better functional outcomes.

AIM: To investigate peripapillary vessel density(VD)in primary open angle glaucoma(POAG)eyes and to compare them with normal control eyes, and to evaluate the diagnostic ability of peripapillary VD in POAG.

METHODS: Sixty consecutive POAG patients from March 2018 to December 2018 were enrolled in this study. Sixty age- and sex-matched healthy volunteer were also enrolled as a control group. Using RTVue-100 optical coherence tomography(OCT), the peripapillary VD of POAG eyes and normal control eyes were measured and compared. To assess the diagnostic ability of peripapillary VD in POAG, receiver operating characteristic curves(ROC)and areas under the ROC(AUC)were used.

RESULTS: The POAG eyes had a smaller peripapillary VD than the control eyes overall(P<0.001). The mean superior and inferior peripapillary VD of the POAG patients were 52.38%±5.31% and 52.58%±5.32%, respectively. The mean superior and inferior peripapillary VD in control eyes were 58.43%±4.11% and 58.36%±3.40%, respectively. Compared to the normal control subjects, the POAG eyes had a smaller superior and inferior peripapillary VD with a significant difference(P<0.001). Multivariable linear regression analysis showed that cup/disc ratio and the peripapillary VD were significantly thinner in association with the POAG diagnosis. The ROC and AUC analyses showed that the AUC value of peripapillary VD is 0.808(95% CI:0.730-0.887)with a good diagnostic value.

CONCLUSION:The peripapillary VD in POAG eyes was smaller than that of normal control eyes. Decreased peripapillary VD might therefore be associated with POAG. The peripapillary VD had a good diagnostic value.

Objective: To explore age-related clinical characteristics, early responses and outcomes in non-senile adults with de novo acute myeloid leukemia (AML). Methods: Data of consecutive cases of 18-65 years adults with de novo AML (non-acute promyelocytic leukemia) were reviewed retrospectively. Clinical characteristics at diagnosis, early responses and outcomes across different age groups of patients were analyzed. Results: 1 097 patients were enrolled. 591 (53.9%) were male. Median age was 42 years. Increasing age was significantly associated with decreasing WBC count (P=0.003), increasing PLT count (P=0.034), lower blast proportions in bone marrow (P=0.021). The incidence of NPM1⁺/FLT3-ITD^- increased with age (P<0.001). Multivariate analyses showed that increasing age was associated with low probabilities of achieving morphologic leukemia free state (MLFS) (P=0.053) and complete remission (CR) (P=0.004) and poor overall survival (OS) (P=0.070) in the whole patients population. However, increasing age was not associated with low MLFS rate and poor OS, except low CR rate (P=0.075) in those receiving standard induction regimen instead of low-intensity regimen. Conclusions There were significant differences on clinical characteristics, cytogenetics and molecular genetics across different age groups in non-senile adults with de novo AML. In the patients receiving standard induction regimen, age was not associated with MLFS rate and OS.