Objective To investigate the expression and clinical significance of microRNA-93-5p (miR-93-5p) in patients with type 2 diabetes mellitus (T2DM) complicated with coronary heart disease (CHD). Methods A total of 60 patients with T2DM (T2DM group), 57 patients with T2DM complicated with CHD (T2DM with CHD group), and 60 healthy individuals (control group) were enrolled in this study from August 2019 to May 2021. The general information, serum miR-93-5p, and interleukin-6 (IL-6) levels were compared among the T2DM with CHD group, control group and T2DM group; the relationships of serum miR-93-5p and IL-6 levels with low-density lipoprotein cholesterol (LDL-C), fasting insulin (FINS), high-density lipoprotein cholesterol (HDL-C), fasting blood glucose (FBG), triglyceride (TG), glycated hemoglobin (HbA1c), and total cholesterol (TC) were analyzed in T2DM with CHD patients; the influencing factors of T2DM complicated with CHD were analyzed; the predictive value of serum miR-93-5p and IL-6 for T2DM complicated with CHD was evaluated. Results The levels of LDL-C, FINS, TG, FPG, TC, HbA1c, serum miR-93-5p, and IL-6 in the T2DM with CHD group and T2DM group were significantly higher than those in the control group, while the HDL-C level was significantly lower (P < 0.01); the levels of LDL-C, FINS, TG, FPG, TC, HbA1c, serum miR-93-5p, and IL-6 in the T2DM with CHD group were significantly higher than those in the T2DM group, while the HDL-C level was significantly lower (P < 0.01). The serum miR-93-5p and IL-6 levels in T2DM with CHD patients were positively correlated with LDL-C, FINS, HbA1c, TC and FPG (P < 0.01), and negatively correlated with HDL-C (P < 0.01); the expression level of miR-93-5p in serum was positively correlated with IL-6 (P < 0.05). LDL-C, FINS, FPG, HbA1c, TC, miR-93-5p, and IL-6 were the influencing factors of T2DM complicated with CHD (P < 0.05); the area under the curve (AUC) of serum miR-93-5p and IL-6 for predicting T2DM complicated with CHD was 0.888 and 0.898 respectively, with cut-off values of 2.59 and 77.98 ng/L respectively, sensitivity of 75.4% for both serum miR-93-5p and IL-6, and the specificity was 89.2% for miR-93-5p and 85.8% for IL-6; the AUC of the combined prediction of miR-93-5p and IL-6 for T2DM complicated with CHD was 0.939, with sensitivity and specificity of 91.2% and 83.3% respectively. Conclusion The serum miR-93-5p level is elevated in patients with T2DM complicated with CHD, and miR-93-5p together with IL-6 may participate in the process of T2DM complicated with CHD. The combined detection of IL-6 and miR-93-5p is expected to serve as an auxiliary method for prediction of T2DM complicated with CHD.

Objective:To review the scope of research on the application of blood flow restriction training in the rehabilitation of patients undergoing anterior cruciate ligament (ACL) reconstruction.Methods:According to the research method of scoping review, computer searches were conducted on China National Knowledge Infrastructure, Wanfang Database, China Biology Medicine disc, VIP, Cochrane Library, PubMed, Embase, with the search period was from eatablishment of databases to December 31, 2022. The included literatures were screened, summarized and analyzed.Results:A total of 16 literatures were included, all of which were randomized controlled trials. The basic content of blood flow restriction training intervention included 8 aspects, such as intervention time, training intensity, training amount, training mode, frequency, interval time, training cycle and blood flow restriction pressure. The effect evaluation mainly involved two kinds of indexes, namely safety indicators and efficacy indicators.Conclusions:Blood flow restriction training can effectively enhance muscle strength and improve knee joint function in patients undergoing ACL reconstruction. Future studies should focus on exploring the best intervention strategy, formulating standardized and unified evaluation criteria and providing the best blood flow restriction training program for patients undergoing ACL reconstruction.

Objective To explore the joint contact force, ligament tensile force and force transmission mode of foot internal structure in Down’s syndrome child (DSC) during standing. Methods The finite element models of foot were constructed based on CT image data from one DSC and one typically developing child (TDC). The models were validated by plantar pressure measurement during static standing. To simulate foot force during standing, the ground reaction force and the triceps surae force were applied as the loading condition. Contact pressure of the tibiotalar, talonavicular and calcaneocuboid joints, tensile force of the spring and plantar calcaneocuboid ligaments, and force transmission mode in transverse tarsal joints were calculated and analyzed. Results The finite element models of foot were validated to be reliable. Compared with the TDC, the DSC showed higher contact pressure at the tibiotalar joint and lower contact pressure at the talonavicular joint. The tensile force of spring and plantar calcaneocuboid ligaments of DSC was 10 times and 58 times of TDC, respectively. The forces transmitted through both mediate and lateral columns in DSC were lower than those in TDC. Conclusions Abnormal contact pressure of the tibiotalar joint, larger tensile force of midfoot ligaments and smaller force of the transverse tarsal joint were found in DSC during standing. The abnormal alteration of stress patterns in foot internal structure of DSC should be fully considered in clinical rehabilitation, so as to provide theoretical references for screening and making intervention plans for early rehabilitation, as well as designing individualized orthopedic insoles.

Objective: To compare the hyoid bone position among patients with different sagittal skeletal malocclusions to provide a reference for clinicians to formulate treatment plans. Methods: Lateral cephalograms of 284 orthodontic patients were selected. According to ANB angles, the types of skeletal malocclusion of patients were determined as follows: Class Ⅰ (1° ≤ ANB ≤ 5°), Class Ⅱ (ANB>5°) and Class Ⅲ (ANB<1°). Ten parameters were used to determine hyoid positions. After comparing the hyoid positions of the three groups, stratified analyses based on sex and age were conducted. Results : No significant differences in demographic and vertical facial type features among skeletal Classes Ⅰ, Ⅱ and Ⅲ patients were observed (P>0.05). The angle between the Gonion-hyoid point line and the hyoid point-Menton line (Go-Hy-Me) of Class Ⅱ patients was significantly smaller than that of Class Ⅰ patients, and the angle between the most anterior and inferior point of the third cervical vertebra-hyoid point line and the hyoid point-Sella line (C3-Hy-S) of Class Ⅲ patients was smaller than that of Class I patients (P<0.05). Age-stratified analysis showed that in the juvenile group, the C3-Hy-S of Class Ⅲ patients was significantly smaller than that of Class Ⅰ patients in males and females (P<0.05). In the adult female group, the Go-Hy-Me of Class Ⅱ patients was significantly smaller, and the distance from the hyoid point to the mandibular plane (Hy-MP) was larger than that noted in Class Ⅰ patients (P<0.05); no significant difference in hyoid position between male Class Ⅱ and I patients was observed (P>0.05). Conclusions Compared with Class Ⅰ patients, the hyoid bone of Class Ⅱ patients in adult females was farther away from the mandible and that of Class Ⅲ patients in juveniles was farther away from the cervical vertebra and posterior cranial base.

Objective:To observe and compare the changes of pulmonary function in patients with pulmonary tuberculosis regular treatment for 3 months.Methods:From April 2018 to June 2019, 500 tuberculosis patients who received regular anti tuberculosis treatment in our hospital were selected.The pulmonary function of patients with pulmonary tuberculosis was measured before treatment and at the end of three months; the results of pulmonary ventilation function, lung volume, diffusing capacity, and the value of forced vital capacity (FVC), maximum expiratory volume in 1 second (FEV 1), maximum expiratory volume in 1 second/forced vital capacity (FEV 1/FVC), total lung volume (TLC), residual volume (RV), carbon monoxide diffusing capacity (D LCO) were compared. Results:252 patients with pulmonary tuberculosis were included. Before treatment and at the end of three months, the abnormal pulmonary function results were 204 cases (80.95%) and 193 cases (76.59%), respectively, and the difference was not statistically significant ( P>0.05). Among them, abnormal pulmonary ventilation function is the most common, especially with obstructive, followed by abnormal diffusing capacity. At the end of three months, the proportions of patients with normal pulmonary ventilation function and normal lung volume were higher than that before treatment ( P<0.05), but there was no significant difference in the proportion of normal diffusing capacity before and after treatment ( P>0.05). The values of FVC, FEV 1, TLC and D LCO at the end of three months were higher than those before treatment, and the difference was statistically significant ( t=-6.414, -6.754, -3.863, -3.311, all P<0.01). Conclusions:Most patients with pulmonary tuberculosis have abnormal pulmonary function. At the end of the three months treatment, the normal rates of the pulmonary ventilation function and lung volume as well as the values of FVC, FEV 1, TLC and D LCO in patients with pulmonary tuberculosis were significantly improved compared with those before treatment.

Objective:To analyze and summarize adverse reactions such as hypoglycemia, lactic acidosis and pancytopenia caused by Linezolid in elderly patients, in order to enhance clinicians' awareness of adverse reactions of Linezolid.Methods:One case with Linezolid-induced lactic acidosis, pancytopenia and hypoglycemia was reported in a patient receiving long-term and repeated use of Linezolid for recurrent urinary tract infections(RUTI)in Beijing Hospital.National and international literature on the three severe and rare adverse reactions caused by Linezolid before December 2018 was reviewed, and the risk factors, clinical characteristics and prognosis of the three severe adverse reactions caused by Linezolid were summarized and analyzed.Results:A total of 86 cases with Linezolid-induced adverse reactions such as hypoglycemia, lactic acidosis and pancytopenia were analyzed.Among them, the ratio of males to females was 1.8∶1.0, the median age was 64.5 years, and 44 cases were over 65 years, accounting for 51.2%.Among the 57 patients with lactic acidosis, 25 lactic acidosis cases were combined with liver and kidney diseases, which were the most commonly involved organs(43.9%, 25/57). The time of onset for lactic acidosis was 4 h-109 d, with a median value of 32 d, and the peak values of blood lactate were 2.6-38.1 mmol/L, with a median value of 13.3 mol/L.Pancytopenia occurred 4 h-120 days after the treatment, and the median value was 21 days.The time of onset for hypoglycemia was 8 h-26, and the median time was 10.3 days.The lowest value of blood glucose was 0.2 mmol/L.Of the 86 cases, 61(70.9%)patients improved, and 12 cases of 51 patients with lactic acidosis died, with a mortality rate of 23.5%.Conclusions:Clinicians should be aware of serious adverse reactions including hypoglycemia, lactic acidosis and pancytopenia during Linezolid treatment in elderly patients.It is recommended to monitor changes in blood glucose, blood lactate and blood cell count during Linezolid treatment, and to avoid long-term use of Linezolid, so as to maximize the benefits for patients.

Pregnane X receptor (PXR, NR1I2) is a prototypical member of the nuclear receptor superfamily. PXR can be activated by both endobiotics and xenobiotics. As a key xenobiotic receptor, the cellular function of PXR is mostly exerted by its binding to the regulatory gene sequences in a ligand-dependent manner. Classical downstream target genes of PXR participate in xenobiotic responses, such as detoxification, metabolism and inflammation. Emerging evidence also implicates PXR signaling in the processes of apoptosis, cell cycle arrest, proliferation, angiogenesis and oxidative stress, which are closely related to cancer. Here, we discussed, in addition to the characterization of PXR , the biological function and regulatory mechanism of PXR signaling in cancer, and its potential for the targeted prevention and therapeutics.

Objective To report a pedigree with tyrosinemia type Ⅱ,and to analyze its causative mutations.Methods Clinical data were obtained from a 10-year-old male proband with tyrosinemia type Ⅱ,and analyzed retrospectively.Blood and urine samples were collected from 19 persons in 3 generations of the pedigree,and the amino acid level was detected in these samples.Genomic DNA was extracted from all of the 19 family members,and mutations in the tyrosine aminotransferase (TAT) gene were detected.Results The patient developed photophobia at 2 months after birth,and the symptom was gradually aggravated after that.At the age of 6 years,ocular pain and photophobia occurred.At the age of 8 years,linear keratotic plaques occurred on his fingertips and soles of both feet,with obvious tenderness.Ophthalmic examination showed no obvious abnormalities in corneal staining or ocular fundus.Skin examination showed multiple linear keratotic plaques on the fingers and soles of both feet.The serum tyrosine level was 825.64 μmol/L,and the level of p-hydroxyphenyllactic acid in urine was 161.4 μmol/L.Genetic testing showed 2 novel mutations,including c.236G ＞ A at position 236 in exon 2 of the TAT gene causing the substitution of glycine by glutamic acid (p.Gly79Glu),and c.1141G ＞ T at position 1141 in exon 10 of the TAT gene leading to the formation of a premature termination codon instead of glutamic acid (p.Glu381*).The proband was the only patient in the family.Some members in the patrilineal family carried the mutation c.1141G ＞ T (p.Glu381*),and some in the maternal family carried the mutation c.236G ＞ A (p.Gly79Glu).Conclusion This is the first case of tyrosinemia type Ⅱ reported in the domestic population,and 2 novel heterozygous mutations were identified in the TAT gene,which may lead to the occurrence of tyrosinemia type Ⅱ in the patient.

Objective     To observe and describe anatomical types of the pulmonary arteries to keep safety of lung resection. Methods     Between November 25, 2005 and January 22, 2013, 194 patients who underwent right upper lobectomy/sleeve lobectomy or combined lung resection including right upper lobectomy were included in Peking University Cancer Hospital. There were 128 males with a median age of 59 (37-86) years and 66 females with a median age of 60 (42-77) years. We separated the pulmonary arteries and recorded the number and positions of them. Some patients were recorded photographically. Results     There were 10 types of right upper lobe pulmonary artery branches in this study. Type 1: 1 apicoanterior segmental artery, 1 ascending segmental artery, 96 patients (49.5%); Type 2: 1 apicoanterior segmental artery, 2 ascending segmental arteries, 48 patients (24.7%); Type 3: 2 apicoanterior segmental arteries, 1 ascending segmental artery, 28 patients (14.4%); Type 4: 2 apicoanterior segmental arteries, 2 ascending segmental arteries, 9 patients (4.6%); Type 5: 1 apicoanterior segmental artery only, 6 patients (3.1%); Type 6: 1 apicoanterior segmental artery, 3 ascending segmental arteries, 3 patients (1.5%); Type 7: 4 apicoanterior segmental arteries, 1 ascending segmental artery, 1 patient (0.5%); Type 8: 3 apicoanterior segmental arteries, 1 ascending segmental artery, 1 patient (0.5%); Type 9: 2 apicoanterior segmental arteries, 1 patient (0.5%); Type 10: 3 apicoanterior segmental arteries, 2 ascending segmental arteries, 1 patient (0.5%). Conclusion     The types of pulmonary artery branches are predictable in some way. It would be helpful to reduce the risk of pulmonary artery injury and improve the operation safety by following   the rules. Variations of pulmonary artery should be noticed to avoid the major bleeding due to the pulmonary artery injury.

Objective To investigate the relationship between peripheral blood mtDNA content and acute coronary syndrome. Methods A total of 244 patients who received coronary angiography(CAG)was enrolled in this study. They were divided into acute coronary syndrome(ACS)group(n=183)and control group(n=61)ac-cording to the CAG results. A quantitative real-time PCR-based method was used to measure relative content of mtDNA in peripheral blood. According to lesion blood vessel counts ,ACS patients were divided into single lesion group,double lesion group and three lesions group. Gensini score was used to quantitatively evaluate the severity of coronary stenotic lesions. Then we analyzed the relationship of mitochondrial DNA content with the lesion counts and the Gensini score. Results The ACS group had a lower mtDNA content ,as compared to controls (P <0.001).The lesion blood vessel count and mtDNA content in the single ,double and three vascular lesions group were all significanlty lower than that of the control group(P<0.05)and that of the double,three vascular lesions group were both significantly lower than that of the single vascular lesion group(P<0.05). According to the Gensi-ni score,all patients were divided into four groups,where with mtDNA content was decreased with the increase of the Gensini score(P < 0.01). The linear regression analysis showed that Gensini score was negatively correlated with mtDNA content(r=-0.644,P<0.001). ROC curve analysis showed that the area under the curve of mtDNA content for ACS diagnosis was 0.855(P<0.001),with the sensitivity and specificity of 0.756 and 0.833,respec-tively. Conclusion MtDNA content is closely associated with ACS and the Gensini score ,the latter indicating the severity of coronary stenotic lesions. MtDNA content detection has its value in the diagnosis of ACS.