Therapeutic effects of estrogen-intervened EPCs transplantation on diabetic ischemic stroke rats / 药学实践与服务

Objective To explore the therapeutic effects of estrogen-intervened endothelial progenitor cells( EPCs) transplantation on diabetic ischemic stroke rats. Methods PKH26-labeled diabetic EPCs and estrogen-intervened diabetic EPCs were injected into rats via the tail vein 24 h after cerebral ischemia. Cerebral ischemic volume, behavioral changes, ischemic site vascularization and homing of EPCs were measured 3 d after EPCs injection. Results Compared with diabetic ischemic rats, estrogen-intervened EPCs transplantation had reduced infarct volumes, improved behavioral scores and ischemic site revascularization and promoted homing of EPCs to sites of injury(P<0.05). Conclusion Estrogen-intervened EPCs transplantation had a better therapeutic effect on diabetic ischemic stroke by promoting EPCs homing to injury site and EPCs-medicated neovascularization .

A case of nephrosialidosis caused by mutation of neuraminidase 1 gene / 中华肾脏病杂志

The child was a 9-year-old girl, and sought medical advice due to "proteinuria for over a month". Renal biopsy result showed focal segmental glomerulosclerosis with diffuse vacuolization of glomerular podocytes and tubular epithelial cells. The child was diagnosed as type Ⅱ sialidosis with a compound heterozygote mutation in neuraminidase 1 gene for c.239C>T(p.Pro80Leu), c.220G>C(p.Val74Leu) and c.205A>G(p.Arg69Gly). Her father was proved to carry the first mutation, and her mother carried the other two, respectively. The report aims to improve the clinician's understanding of the rare disease. Early diagnosis can help avoid overuse of immunosuppressants, guide treatment reasonably and improve prognosis.

Association Between Dietary Knowledge and Food Preferences in Residents Aged 18 and Over in China Based on Latent Class Analysis / 中国医学科学院学报

Objective To investigate the food preferences and explore the potential association between dietary knowledge and food preferences in residents aged 18 and over in China,so as to provide a basis for promoting healthy diets.Methods The latent class analysis was carried out with the 2015 cross-sectional data of China health and nutrition survey to categorize the food preferences among 8 783 residents aged 18 and over.Multinomial Logistic regression was adopted to assess the association between and dietary knowledge and food preferences.Results The food preferences of the residents aged 18 and over in China were classified into preference for less vegetable(3.28%),lack of preference(11.20%),diverse preferences(4.19%),and preference for healthy diets(81.33%).The proportion of the adults with dietary knowledge was 36.87%(3 238/8 783).The dietary knowledge varied in the adults with different food preferences(all P<0.001).After adjusting for gender,age,urban and rural distribution,education background,and annual household income,for each point increase in the dietary knowledge score,there was an estimated reduction of 22% in the probability of preferring less vegetables(OR=0.78,95%CI=0.76-0.80, P<0.001),13% in the probability of lacking preference(OR=0.87,95%CI=0.86-0.89, P<0.001),and 3% in the probability of having diverse preferences(OR=0.97,95%CI=0.94-1.00, P=0.030).Compared with those lacking dietary knowledge,the individuals with dietary knowledge had a 77% less probability of preferring less vegetables(OR=0.23,95%CI=0.16-0.32, P<0.001),a 55% less probability of lacking preference(OR=0.45,95%CI=0.39-0.53, P<0.001),and a 23% less probability of having diverse preferences(OR=0.77,95%CI=0.61-0.96, P=0.023).Conclusions The residents aged 18 and over in China presented four food preferences,including preference for less vegetables,lack of preference,diverse preferences,and preference for healthy diets,the last of which had the highest proportion.The individuals with lower levels of dietary knowledge have higher probability of preferring unhealthy food.

Comparison on Performance of Quantitative Ultrasound and Dual-Energy X-ray Absorptiometry in Evaluating Bone Health of Adults Aged 18-40 Years / 中国医学科学院学报

Objective To compare the consistency of quantitative ultrasound(QUS)and dual-energy X-ray absorptiometry(DXA)in measuring bone mineral density(BMD)of adults aged 18-40 years in Guangzhou and evaluate the diagnostic value of QUS for identifying low bone mass.Methods DXA was employed to measure the BMD and QUS to measure the speed of sound(SOS)in 731 participants.The Bland-Altman analysis was performed to evaluate the consistency of Z scores between SOS and BMD.With the BMD Z ≤-2.00 as the diagnostic criterion for low bone mass,the receiver operating characteristics curve of QUS was established,and the area under the curve(AUC)and the sensitivity,specificity,and correct diagnostic index for the optimal cut-off of SOS Z score were calculated.Results The results of Bland-Altman analysis showed that the mean differences in the Z scores of SOS and BMD in males and females were 1.27(-0.94 to 3.47)and 0.93(-1.33 to 3.18),respectively.The AUC of SOS Z score in the diagnosis of low bone mass in males and females was 0.734(95%CI=0.380-0.788)and 0.679(95%CI=0.625-0.732),respectively.In males,the optimal cut-off of SOS Z score for low bone mass was -0.35,with the sensitivity,specificity,and correct diagnostic index of 64.1%,68.6%,and 0.327,respectively.In females,the optimal cut-off value of SOS Z scores for low bone mass was -1.14,with the sensitivity,specificity,and correct index of 73.9%,54.8%,and 0.285,respectively.Conclusion QUS and DXA show poor consistency in the diagnosis of BMD in the adults aged 18-40 years in Guangzhou,while QUS demonstrates an acceptable value in identifying low bone mass.

MRI Findings of the Uterine Tumors Resembling Ovarian Sex Cord Tumors:Report of Two Cases / 中国医学科学院学报

Uterine tumors resembling ovarian sex cord tumors are rarely reported with limited imaging findings.The current study reported two case of uterine tumors resembling ovarian sex cord tumors and described the detailed MRI findings,which would provide valuable imaging evidence for the diagnosis of such tumors.

Targeting TRMT5 suppresses hepatocellular carcinoma progression via inhibiting the HIF-1α pathways / 浙江大学学报（英文版）（B辑：生物医学和生物技术）

Accumulating evidence has confirmed the links between transfer RNA (tRNA) modifications and tumor progression. The present study is the first to explore the role of tRNA methyltransferase 5 (TRMT5), which catalyzes the m1G37 modification of mitochondrial tRNAs in hepatocellular carcinoma (HCC) progression. Here, based on bioinformatics and clinical analyses, we identified that TRMT5 expression was upregulated in HCC, which correlated with poor prognosis. Silencing TRMT5 attenuated HCC proliferation and metastasis both in vivo and in vitro, which may be partially explained by declined extracellular acidification rate (ECAR) and oxygen consumption rate (OCR). Mechanistically, we discovered that knockdown of TRMT5 inactivated the hypoxia-inducible factor-1 (HIF-1) signaling pathway by preventing HIF-1α stability through the enhancement of cellular oxygen content. Moreover, our data indicated that inhibition of TRMT5 sensitized HCC to doxorubicin by adjusting HIF-‍1α. In conclusion, our study revealed that targeting TRMT5 could inhibit HCC progression and increase the susceptibility of tumor cells to chemotherapy drugs. Thus, TRMT5 might be a carcinogenesis candidate gene that could serve as a potential target for HCC therapy.

Optimal Parameters for Virtual Mono-Energetic Imaging of Liver Solid Lesions / 中国医学科学院学报

Objective To explore the optimal parameters for virtual mono-energetic imaging of liver solid lesions. Methods A retrospective analysis was performed on 60 patients undergoing contrast-enhanced spectral CT of the abdomen.The iodine concentration values of hepatic arterial phase images and the CT values of different mono-energetic images were measured.The correlation coefficient and coefficient of variation were calculated. Results The average correlation coefficients between iodine concentrations and CT values of hepatic solid lesion images at 40,45,50,55,60,65,and 70 keV were 0.996,0.995,0.993,0.989,0.978,0.970,and 0.961,respectively.The correlation coefficients at 40(P=0.007),45(P=0.022),50 keV (P=0.035)were higher than that at 55 keV,and the correlation coefficients at 40 keV(P=0.134) and 45 keV(P=0.368) had no significant differences from that at 50 keV.The coefficients of variation of the CT values at 40,45,and 50 keV were 0.146,0.154,and 0.163,respectively. Conclusion The energy of 40 keV is optimal for virtual mono-energetic imaging of liver solid lesions in the late arterial phase,which is helpful for the diagnosis of liver diseases.

Analysis of serum CA125 and related influencing factors in silicosis patients with pulmonary heart disease / 中华劳动卫生职业病杂志

Objective: To analyze the serum carbohydrate antigen 125 (CA125) level and its influencing factors in male silicosis patients with pulmonary heart disease. Methods: In October 2021, data of 38 male patients with simple silicosis (silicosis group), 28 cases of silicosis with pulmonary heart disease (pulmonary heart disease group), and 27 healthy controls (control group) in the same age group were collected in inpatient and outpatient of Nanjing Occupational Disease Prevention and Control Hospital from January 2017 to December 2020. The serum CA125 levels of the three groups were compared, and the correlation between disease-related indexes and serum CA125 in silicosis patients with pulmonary heart disease was analyzed, as well as the influencing factors of pulmonary heart disease and serum CA125 levels in silicosis patients. Results: The serum CA125 level[ (19.95±7.52) IU/ml] in pulmonary heart disease group was higher than that in silicosis group[ (12.98±6.35) IU/ml] and control group[ (9.17±5.32) IU/ml] (P<0.05). There was no significant difference in serum CA125 level between the silicosis group and the control group (P>0.05). Serum CA125 levels were positively correlated with blood uric acid and fasting blood glucose in silicosis patients with pulmonary heart disease (r=0.39, 0.46, P<0.05). Serum CA125 level was a risk factor for silicosis patients with pulmonary heart disease (OR=1.13, 95%CI: 1.02-1.24, P<0.05). Dust exposure time, lactate dehydrogenase and smoking history were positively correlated with serum CA125 level in silicosis patients (P<0.05) . Conclusion: The serum CA125 level of male silicosis patients with pulmonary heart disease is significantly increased, and the level of CA125 is correlated with the level of fasting blood glucose and blood uric acid.

A diagnostic prediction nomogram for small gastric stromal tumors based on features under endoscopic ultrasonography / 中华消化内镜杂志

Objective:To establish a nomogram based on features under endoscopic ultrasonography (EUS) for predicting the diagnosis of small gastric stromal tumors.Methods:The clinicopathological data of 189 patients with gastric submucosal tumors (diameter less than 2 cm) who underwent endoscopic resection at the Department of Gastroenterology, Tongji Hospital of Tongji University from June 2015 to August 2021 were retrospectively collected. All patients were divided into the modeling group ( n=126) and the validation group ( n=63) at 2∶1 by random function of software R. Independent influencing factors for the diagnosis of small gastric stromal tumors under EUS screened by univariable and multivariable logistic regression analysis were used to establish the diagnostic prediction nomogram. The receiver operator characteristic (ROC) curves were drawn to evaluate the discrimination of the model both in the modeling group and the validation group. Hosmer-Lemeshow test and calibration curve were used to evaluate the calibration of the model in both groups. Results:The age of patients >60 years ( OR=2.815, 95% CI:1.148-6.900, P=0.024), the lesions located in cardia/fundus ( OR=5.210, 95% CI:1.225-22.165, P=0.025), originated in muscularis propria ( OR=6.404, 95% CI:2.262-18.135, P<0.001) and of external growth ( OR=6.024, 95% CI:1.252-28.971, P=0.025) were independent influencing factors for the diagnosis of small gastric stromal tumors under EUS. The diagnostic prediction nomogram was established based on the four factors above. The areas under ROC curve of the modeling group and validation group were 0.834 (95% CI:0.765-0.903) and 0.780 (95% CI:0.667-0.893). Hosmer-Lemeshow test indicated that this model fit the data well ( χ2=10.23, P=0.176 in the modeling group; χ2=2.62, P=0.918 in the validation group). Calibration charts of the model drawn by Bootstrap method showed that the calibration curves fit well with the standard curves in both groups. Conclusion:The nomogram based on features under EUS for predicting the diagnosis of small gastric stromal tumors provides a visual reference for endoscopists to diagnose small gastric stromal tumors under EUS with good discrimination and calibration.

The practice and exploration of the new teacher training mode of MOOC and micro-course club / 中华医学教育探索杂志

This study summarizes the construction background, rules and regulations and institutional settings of the MOOC and Micro-course Club in the Second Hospital of Jilin University, discusses the means of teacher training for clinical teachers, and shows the application effect of the club. At the same time, the related problems encountered in the process of club construction are summarized and reflected. The construction of MOOC and micro-course clubs is conducive to improving the information-based teaching level of clinical teachers, and also provides new inspiration and ideas for the construction of medical clubs.

Treatment and prognosis analysis of 205 patients with intracranial primary diffuse large B cell lymphoma / 中华放射肿瘤学杂志

Objective:To analyze the clinical efficacy and prognostic factors of intracranial primary diffuse large B-cell lymphoma (DLBCL).Methods:Clinical data of 205 patients pathologically diagnosed with intracranial primary DLBCL at Sun Yat-sen University Cancer center from March 2001 to September 2020 were retrospectively analyzed. Among them, 101 patients were male and 104 female, the median age was 54 years old. Non-germinal center B cell (GCB) subtype accounted for 74.1%(126/170). A total of 177 patients received high-dose methotrexate (HD-MTX) and 91 patients received rituximab. After induction chemotherapy, 59 patients (30.4%) achieved complete response (CR), 112 patients (57.7%) achieved partial response (PR) or stable disease (SD). A total of 83 patients received consolidation or salvage radiotherapy, and only 14 patients received autologous stem cell transplantation (ASCT). The influence of pathological type, chemotherapy, rituximab treatment, radiotherapy and radiotherapy mode, ASCT and other factors on the overall survival (OS) and progression free survival (PFS) was evaluated. The survival rate was calculated by Kaplan-Meier method. Univariate prognostic analysis was performed by log-rank test. Multivariate prognostic analysis was conducted by COX model.Results:The median follow-up time was 34 months. The 5-year OS and PFS rates were 55.6% and 44.2%, respectively. GCB subtype, chemotherapy with HD-MTX, rituximab treatment, remission status after induction chemotherapy, and radiotherapy were favorable prognostic factors for OS or PFS, in which the last three were the independent prognostic factors. Consolidation radiotherapy in patients who obtained CR after induction chemotherapy did not significantly improve survival, while salvage radiotherapy in patients who achieved PR/SD after induction chemotherapy significantly improved both OS and PFS(both P<0.01). Consolidation radiotherapy showed no significant survival difference compared with consolidation ASCT. Conclusions:The non-GCB subtype of intracranial primary DLBCL is related to poor prognosis. The addition of rituximab to HD-MTX based induction chemotherapy can improve survival. Radiotherapy is still an important treatment for intracranial primary DLBCL, and there are limitations of ASCT in practical clinical application.

An investigation of the physical and mental health of trainees receiving standardized residency training of anesthesiology in four large teaching hospitals in Wuhan, China / 中华医学教育探索杂志

Objective:To investigate the physical and mental health of trainees receiving standardized residency training of anesthesiology in four large teaching hospitals in Wuhan, China, as well as related risk factors.Methods:The trainees who received standardized residency training of anesthesiology in four large general teaching hospitals in Wuhan were selected as subjects, and Symptom Checklist-90 (SCL-90) and Eysenck Personality Questionnaire were used to investigate mental health and personality state. SPSS 22.0 was used to perform the independent samples t-test, a one-way analysis of variance, and the chi-square test, and Logistic regression was used to analyze the influencing factors for SCL-90. Results:A total of 328 questionnaires were distributed and 326 valid questionnaires were collected, with a recovery rate of 99.39%. Among these trainees, 68 (20.86%) were found to have abnormal mental status (SCL-90 score >160), with a relatively high proportion of the trainees with obsessive-compulsive symptoms or depression. The trainees with abnormal mental status showed the personality characteristics of tendency neuroticism and tendency psychoticism, and compared with the trainees with normal mental status, the trainees with abnormal mental status showed a higher proportion of trainees with abnormal personality characteristics. The univariate analysis showed that the grade of residency training, scientific research pressure, monthly on-duty frequency, and personality characteristics were associated with abnormal mental status, and the multivariate analysis showed that a monthly on-duty frequency of >5 times ( B=0.997, odds ratio [ OR]=2.709, 95%CI: 1.051-6.986, P=0.039), great pressure of scientific research ( B=3.235, OR=25.412, 95%CI: 3.239-199.363, P=0.002), emotional instability ( B=2.015, OR=7.504, 95%CI: 3.529-15.954, P<0.001), and psychosomatic abnormalities ( B=1.640, OR=5.154, 95%CI: 2.510-10.581, P<0.001) were risk factors for psychological abnormality in trainees, while extroversion personality ( B=-2.758, OR=0.063, 95%CI: 0.019-0.215, P<0.001) was a protective factor against abnormal mental status. Conclusions:The positive rate of psychological abnormality is 20.86% among trainees receiving standardized residency training of anesthesiology in four large teaching hospitals in Wuhan, and possible influencing factors include monthly on-duty frequency, scientific research pressure, work pressure, and different personality characteristics.

Effectiveness of different screening strategies for type 2 diabete on preventing cardiovascular diseases in a community-based Chinese population using a decision-analytic Markov model / 北京大学学报(医学版)

OBJECTIVE@#To evaluate the effectiveness of different screening strategies for type 2 diabetes to prevent cardiovascular disease in a community-based Chinese population from economically developed areas based on the Chinese electronic health records research in Yinzhou (CHERRY) study.@*METHODS@#A Markov model was used to simulate different systematic diabetes screening strategies, including: (1) screening among Chinese adults aged 40-70 years recommended by the 2020 Chinese Guideline for the prevention and Treatment of Type 2 Diabetes (Strategy 1); (2) screening among Chinese adults aged 35 to 70 years recommended by the 2022 American Diabetes Association Standard of Medical Care in Diabetes (Strategy 2); and (3) screening among Chinese adults aged 35-70 years with overweight or obesity recommended by the 2021 United States Preventive Services Task Force Recommendation Statement on Screening for Prediabetes and Type 2 Diabetes (Strategy 3). According to the guidelines, individuals who were screened positively (fasting plasma glucose ≥ 7.0 mmol/L) would be introduced to intensive glycemic targets management (glycated hemoglobin < 7.0%).The Markov model simulated different screening scenarios for ten years (cycles) with parameters mainly from the CHERRY study or published literature. Number of cardiovascular disease events or deaths could be prevented and number needed to screen (NNS) were calculated to compare the effectiveness of the different strategies. One-way sensitivity analysis on the sensitivity of screening methods and probabilistic sensitivity analysis on uncertainties of diabetes incidence, the sensitivity of screening methods, and intensive glycemic management effects were conducted.@*RESULTS@#Totally 289 245 Chinese adults aged 35-70 years without cardiovascular diseases or diagnosed diabetes at baseline were enrolled. In terms of the number of cardiovascular disease events could be prevented, Strategy 1 for systematic diabetes screening among the adults aged 35-70 years was 222 (95%UI: 180-264), Strategy 2 for systematic diabetes screening among the adults aged 40-70 years was 227 (95%UI: 185-271), and Strategy 3 for systematic diabetes screening among the adults aged 35-70 years with obesity or overweight (body mass index ≥ 24 kg/m2) was 131 (95%UI: 98-164), compared with opportunistic screening. NNS per cardiovascular disease event for the strategies 1, 2 and 3 were 1 184 (95%UI: 994-1 456), 1 274 (95%UI: 1 067-1 564) and 814 (95%UI: 649-1 091), respectively. Compared with Strategy 1, NNS per cardiovascular disease event for Strategy 2 increased by 90 (95%UI: -197-381) with similar effectiveness of cardiovascular prevention; however, NNS per cardiovascular disease event for Strategy 3 was reduced by 460 (95%UI: 185-724) in contrast to the Strategy 2, suggesting that the Strategy 3 was more efficient. The results were consistent in multiple sensitivity analyses.@*CONCLUSION@#Systematic screening for diabetes based on the latest guidelines in economically developed areas of China can reduce cardiovascular events and deaths. However, merely lowering the starting age of screening from 40 to 35 years seems ineffective for preventing cardiovascular disease, while screening strategy for Chinese adults aged 35-70 years with overweight or obesity is recommended to improve efficiency.

Comparison of diagnostic value of ultrasound and multi-slice spiral CT in wrist joint lesions of rheumatoid arthritis / 中国医师进修杂志

Objective:To investigate the diagnostic value and imaging characteristics of ultrasound and multi-slice spiral CT in rheumatoid arthritis (RA) wrist joint lesions.Methods:The clinical data of 54 cases of RA wrist arthropathy in Jianhu Hospital Affiliated to Nantong University from December 2018 to April 2020 were analyzed. All the patients were examined by ultrasound and multi-slice spiral CT. The imaging characteristics of ultrasound and multi-slice spiral CT were analyzed, and the detection rates of synovitis, joint effusion, tenosynovitis, bone erosion and wrist joint lesions were calculated.Results:A total of 1 188 joints were examined in 54 patients with RA, including 108 wrist joints, 540 metacarpophalangeal joints and 540 proximal interphalangeal joints. There was no significant difference in the detection rate of wrist joint synovitis, joint effusion and tenosynovitis between ultrasound and CT ( P>0.05). The wrist joint lesions detection rates of ultrasound and CT were 97.2%(105/108) and 46.3% (50/108), the difference was statistically significant ( χ2 = 36.52, P<0.05). Ultrasound image features: synovitis ultrasound image showed hypoechoic joint cavity, not by joint displacement or compression image, color Doppler flow imaging (CDFI) examination could see blood flow signal;joint effusion in ultrasound image of joint effusion was strip, strip-shaped, non-uniform distribution, image was affected by joint displacement or compression, CDFI examination had no blood flow signal; bone erosion ultrasound image showed bone cortical continuous interruption or "crater" "insect erosion" like defects. CT imaging features: wrist joint space narrow, osteoporosis, some patients with scaphoid, distal radius visible bone erosion. Conclusions:The detection rate of wrist synovitis, joint effusion and tenosynovitis by ultrasound and multi-row spiral CT are similar. The multi-row spiral CT examination have a slight advantage in evaluating the joint space and bone changes. The sensitivity of wrist bone erosion and wrist joint lesions are higher than those of multi-row spiral CT, which can guide the early clinical diagnosis and treatment of RA.

Fecal microbiota transplantation in the treatment of acute intestinal pseudo obstruction secondary to intracerebral hemorrhage: a case report and literature review / 中华危重病急救医学

Objective:To analyze the clinical effects of fecal microbiota transplantation (FMT) on the treatment of acute intestinal pseudo obstruction (AIPO) secondary to intracerebral hemorrhage.Methods:The clinical data of a patient with AIPO secondary to intracerebral hemorrhage who was admitted to Nanfang Hospital of Southern Medical University was analyzed. The flora compositon between donor and patient was compared, finding the changes of intestinal flora before and after FMT (day 0 and day 25).Results:The main clinical findings in the patient were serious bloating, expansion of the intestinal canal and intra-abdominal hypertension. A week of conventional therapy was not effective, and the symptoms became progressively worse, affecting respiratory function.The result of fecal flora suggested the intestinal microbiota dybiosis, so FMT was attempted. After FMT, the patient's gastrointestinal symptoms were significantly relieved, and there were no further episodes within 25 days. The new result of fecal flora showed that the flora colonizing the intestine was dominated by Akkermansia and Bifidobacterium, with a significant decrease in potential pro-inflammatory and gas-producing bacteria and an increased gut microbiota diversity. The results trended to be partly consistent with the donor at 25 days after FMT: at the phylum level, the relative abundance of Bacterioidetes, Vereucomicrobia, Firmicutes and Actinobacteria were increased while Proteobacteria was decreased; at the class level, the relative abundance of Verrucomicrobiae, Bacterioidia, Actinobacteria, Coriobacteriia and Clostridia were increased and Gammaproteobacteria was decreased; at the order level, the relative abundance of Bacterioidales, Verrucomicrobiales, Clostridiale, Coriobacteriales were increased and Betaproteobacteriales, Enterobacteriales were decreased; at the family level, the relative abundance of Bifidobacteriaceae, Akkermansiaceae, Ruminococcaceae were increased and Enterobacteriaceae was decreased; at the genus level, the relative abundance of Akkermansia, Bifidobacterium were increased and Escherichia-Shigella, Klebsiella were decreased. At 1-year follow-up, the patient lived with self-care and scored 5 points in Glasgow outcome scale (GOS). Conclusions:FMT may provide clinical benefit in treated patients with AIPO secondary to intracerebral hemorrhage, probably by regulating the intestinal microflora, and re-establishing proper intestinal barrier, to maintain intestinal homeostasis.

Combined medial and lateral approach for the treatment of calcaneal fractures with sustentaculum tali fracture and/or dislocation of sustentaculum tali-talus joint / 中华骨科杂志

Objective:To explore the clinical effects of combined medial and lateral approaches in treating of calcaneal fractures combined with sustentaculum tali fractures and/or dislocations of sustentaculum tali-talus joint.Methods:Four adult cadaver specimens (8 feet) were selected, of which two (4 feet) were dissected on the medial side of the calcaneus to observe the adjacency and exposure range of sustentaculum tali. The other two specimens were simulated as medial and lateral approaches to reduce and fix calcaneal fractures. Retrospective analysis of 9 cases (9 feet) of Sanders II-IV type calcaneal fractures with combined medial and lateral approaches in the treatment of fractures and/or dislocations of sustentaculum tali-talus joint was performed. The average age was 49.9±11.3 (25-58) years. During the operation, the medial incision was made first, and the sustentaculum tali fracture was temporarily reduced and fixed to the talus. Then the lateral incision was made to expose the lateral side of the calcaneus, and the fracture fragments were reduced and fixed; the sustentaculum tali was fixed laterally with screws, and 2 cases were additionally fixed medially with absorbable rods. At the same time, six cases (8 feet) of calcaneal fractures with sustentaculum tali fractures and/or dislocations of sustentaculum tali-talus were treated with lateral approach as a control group. The lateral sides of both groups were fixed with calcaneal locking plate and implanted with demineralized bone matrix into the cavity after articular surface reduction. The B?hler and Gissane angles of the two groups of patients were measured at 1 year after operation. The American Orthopaedic Foot and Ankle Society (AOFAS) scoring system was used to evaluate the clinical efficacy.Results:The sustentaculum tali-talus joint had a shape of an inverted "V" with two divided parts. The tip of the sustentaculum tali was exposed through the front window of the posterior tibial tendon. The sustentaculum tali and the medial side of the calcaneal body was completely exposed and fixed through the window between the posterior tibial tendon and the flexor digitorum longus tendon. The postoperative incision blood loss in the combined medial and lateral approach group was 73.6±4.3 ml, which was greater than that in the lateral approach group (70.6±7.1 ml) ( t=2.18, P=0.045). The lateral incision healed in both groups. The medial incision healed delayed in 1 patient in the combined medial and lateral approach group. The fractures in the combined medial-lateral approach group and the lateral approach group were both healed. The healing duration was 12.2±2.1 weeks and 12.8±2.8 weeks, respectively, without significant difference ( t=0.50, P=0.622). The B?hler angles of the combined medial-lateral approach group and the lateral approach group were 37.0°±5.7° and 27.9°±4.0° at 1 year after operation, respectively. These values were greater than the preoperative values of 4.7°±3.4° and 3.9°±2.9° ( P<0.05), with significant difference between groups ( t=3.76, P=0.002). The Gissane angles were 133.2°±9.8° and 139.1°±9.4° respectively, which were lower than those of 172°±7.3° and 175.6°±5.6° before operation ( P<0.05). There was no significant difference between the groups ( t=1.26, P=0.226). The AOFAS score of the combined medial and lateral approach group was 93.6±4.0 points, which was higher than that of the lateral approach group (84.3±8.2 points) ( t=3.03, P=0.008). Conclusion:Intra-articular calcaneal fractures combined with a high probability of sustentaculum tali fractures and/or dislocations of sustentaculum tali-talus joint. Compared with the simple lateral approach, the use of the combined medial-lateral approach and the medial-lateral surgical sequence is beneficial to restore the calcaneal alignment and anatomic shape, especially the alignment relationship of the medial calcaneus and talus, so as to obstain better early clinical outcomes.

Serological screening and analysis of clinical characteristics for celiac disease in susceptible population in Southern China / 中华内科杂志

Objective:To determine the seroprevalence of celiac disease in susceptible population, and to analyze the relationship between demographic characteristics, dietary habits, lifestyle and serological positivity so as to provide guidance for the prevention and treatment of celiac disease in Southern China.Methods:A total of 1 273 individuals who participated in Guangdong Province Health Screening Program in 2015, were selected as serologically positive subjects of celiac disease, including people with irritable bowel syndrome, colitis, diarrhea, anemia, low BMI, short stature, type 1 diabetes mellitus (T1DM), rheumatoid arthritis (RA), ankylosing spondylitis, psoriasis and bristol grade=6 or 7. All subjects were tested for serum IgA anti-tissue transglutaminase antibodies (TTGA), IgA antibodies against deamidated gliadin peptides(DGPA) and IgG against deamidated gliadin peptides (DGPG). Dietary habits, lifestyle and demographic characteristics were compared in subgroups.Results:The seroprevalence of celiac disease in susceptible population was 0.94% (95% CI 0.54%-1.64%) including 0.08% (1/1 273) for TTGA, 0.47% (6/1 273) for DGPA, and 0.39% (5/1 273) for DGPG. The seropositive rate was 3.6% (1/28) in patients with psoriasis, 2.1% (2/95) in the low BMI group, 1.9% (1/53) in T1DM group, 1.8% (3/169) in diarrhea group and 1.1% (5/463) in RA group. No significant difference was found in age, gender, high carbohydrate diet or lifestyle between the negative and the positive subjects. Conclusions:In Southern China, the seropositive rate of celiac disease is 0.94% in susceptible population, which prompts an urgent need of serological screening for early diagnosis.

Evaluation of Lateral Pterygoid Muscle Contraction in Patients with Temporomandibular Disorders Based on 3D-T2 Weighted Imaging / 中国医学科学院学报

Objective To evaluate lateral pterygoid muscle(LPM)contraction in the patients with temporomandibular disorders(TMD)based on 3D-T2 weighted imaging(3D-T2WI).Multiplanar reconstruction(MPR)was employed to measure the length of LPM in the images taken in closed-and open-mouth positions. Methods Seventeen TMD patients [age of(29.82±10.70)years,males/females=8/9] and 13 normal volunteers [control,age of(23.54±3.31)years,males/females=6/7] received 3D-T2WI of the temporomandibular joints in closed-and open-mouth positions from November 2019 to April 2020 in Department of Radiology,Hainan Hospital of Chinese PLA General Hospital.According to the position of the discs,the subjects were classified into the following groups:TMD with disc displacement without reduction(TMD-DDwoR),TMD with disc displacement with reduction(TMD-DDwR),TMD without disc displacement(TMDwoDD),and normal control without disc displacement(NCwoDD).MPR was employed to measure the maximal length of the superior belly of LPM.One-way analysis of variance,receiver operating characteristic curve,and permutation test were employed for the statistical analyses. Results The contraction of LPM was significantly shorter in TMD-DDwoR group [(3.36±1.96)mm] than in TMDwoDD group [(7.90±3.95)mm],NCwoDD group [(8.77±3.13)mm](

Two Cases of Hypovascular Pituitary Metastases and Literature Review / 中国医学科学院学报

Pituitary metastasis,a rare kind of intracranial malignant tumor,is characterized by metastasis from all parts of the body to the pituitary.The common tumors metastatic to pituitary are abundant with blood supply,located in the posterior pituitary lobe and/or the pituitary stalk.The lesion shows infiltrative growth,and mainly demonstrates low signal on T1 weighted imaging and high signal on T2 weighted imaging.It is usually enhanced significantly after iodinated contrast administration.The metastatic tumor with poor blood supply is similar to pituitary macroadenoma on magnetic resonance image,which makes it difficult to be differentiated.We reported two cases of pathologically diagnosed pituitary metastasis with poor blood supply and reviewed related papers,aiming to provide the imaging differentiation points of hypovascular pituitary metastasis.

Triterpenoids from leaves of Ilex guayusa / 中国中药杂志

The chemical constituents from the leaves of Ilex guayusa were investigated. Sixteen triterpenoids were isolated from the 95% ethanol extract of dried leaves of I. guayusa by silica gel, Sephadex LH-20, and ODS column chromatographies and semi-prepa-rative HPLC. Those triterpenoids were identified by NMR, HR-MS, and literature analysis: 3β-hydroxy-11α,12α-epoxy-24-nor-urs-4(23)-ene-28,13β-olide(1), 3β-hydroxy-24-nor-4(23),12-oleanadien-28-methyl ester(2), oleanolic acid(3), 3β,28-dihydroxy-12-oleanene(4), 2α,3β-dihydroxy-11α,12α-epoxy-24-'nor-olean-4(23)-ene-28,13β-olide(5), ursolic acid(6), 3β,23-dihydroxy ursolic acid(7), 3β,28-dihydroxy-12-ursene(8), 3β-28-nor-urs-12-ene-3,17-diol(9), 3β-hydroxyurs-11-ene-28,13β-olide(10), 13β,28-epoxy-3β-hydroxy-11-ursene(11), 3β-hydroxy-28,28-dimethoxy-12-ursene(12), 3β-hydroxy-24-nor-urs-4(23),12-dien-28-oic acid(13), 3β-hydroxy-24-nor-urs-4(23),12-dien-28-methyl ester(14), 2α,3β-dihydroxy-11α,12α-epoxy-24-nor-urs-4(23)-ene-28,13β-olide(15) and 2α,3β-dihydroxy-11α,12α-epoxy-24-nor-urs-4(23),20(30)-dien-28,13β-olide(16). Compounds 1-2 were new compounds, and compounds 4-5, 7 and 9-16 were isolated from I. guayusa for the first time.