Objective To analyze the correlation between the poor position of pedicle screw after lumbar internal fixation and the occurrence of postoperative neurological symptoms.Methods The clinical data of patients who underwent lumbar pedicle screw surgery in our hospital from January 2017 to December 2023 were analyzed retrospectively.Record the patient's sex,age,diagnosis,surgical segment,the presence of postoperative neurological complications,the types of neurological complications.According to the postoperative CT,the screw penetration zone and grade were evaluated,and the distribution of different pedicle screw penetration types was recorded.The correlation between different types of pedicle screw penetration and postoperative neurological symptoms was analyzed.Results A total of 184 patients were included,including 80 males and 104 females.Age ranged from 18 to 82 years,with an average of 60.1±14.2 years.35 patients developed new neurological symptoms after operation.The incidence of postoperative neurological symptoms caused by pedicle medial quadrant screw penetration and lower quadrant screw penetration was higher than that of pedicle superior quadrant and lateral quadrant screw penetration.From L1 to L5,the risk of postoperative neurological symptoms caused by screw penetration in the medial quadrant of the pedicle increases gradually.When the penetration distance of pedicle medial quadrant screws in L4 and L5 segments is≥2mm,the risk of postoperative neurological symptoms is high.When the penetration distance of pedicle medial quadrant screws in L1,L2 and L3 segments is greater than 4mm,the risk of postoperative neurological symptoms is high.The distance of pedicle screw penetrating the medial quadrant of pedicle was positively correlated with the incidence of postoperative neurological symptoms(P<0.05).Conclusion The lateral and superior quadrants of the pedicle may be regarded as safety zones for lumbar pedicle screw placement.For the L1～L3 segments,screw penetration depth should not exceed 4 mm;whereas for the L4～L5 segments,the safety threshold must be strictly controlled within 2 mm.

Objective To analyze the correlation between the poor position of pedicle screw after lumbar internal fixation and the occurrence of postoperative neurological symptoms.Methods The clinical data of patients who underwent lumbar pedicle screw surgery in our hospital from January 2017 to December 2023 were analyzed retrospectively.Record the patient's sex,age,diagnosis,surgical segment,the presence of postoperative neurological complications,the types of neurological complications.According to the postoperative CT,the screw penetration zone and grade were evaluated,and the distribution of different pedicle screw penetration types was recorded.The correlation between different types of pedicle screw penetration and postoperative neurological symptoms was analyzed.Results A total of 184 patients were included,including 80 males and 104 females.Age ranged from 18 to 82 years,with an average of 60.1±14.2 years.35 patients developed new neurological symptoms after operation.The incidence of postoperative neurological symptoms caused by pedicle medial quadrant screw penetration and lower quadrant screw penetration was higher than that of pedicle superior quadrant and lateral quadrant screw penetration.From L1 to L5,the risk of postoperative neurological symptoms caused by screw penetration in the medial quadrant of the pedicle increases gradually.When the penetration distance of pedicle medial quadrant screws in L4 and L5 segments is≥2mm,the risk of postoperative neurological symptoms is high.When the penetration distance of pedicle medial quadrant screws in L1,L2 and L3 segments is greater than 4mm,the risk of postoperative neurological symptoms is high.The distance of pedicle screw penetrating the medial quadrant of pedicle was positively correlated with the incidence of postoperative neurological symptoms(P<0.05).Conclusion The lateral and superior quadrants of the pedicle may be regarded as safety zones for lumbar pedicle screw placement.For the L1～L3 segments,screw penetration depth should not exceed 4 mm;whereas for the L4～L5 segments,the safety threshold must be strictly controlled within 2 mm.

Objective To analyze the changes in the amino acid composition and content of Eriobotryae folium in the twelve months,and to can provide a theoretical basis for the harvesting period and resource utilization of Eriobotryae folium.Methods The amino acid composition and content of Eriobotryae folium in different months were determined by high performance liquid chromatography with phenyl isothiocyanate pre-column derivation.SPSS22.0 software was used to analyze the statistical significance difference and data correlation.According to the ideal model proposed by the World Health Organization(WHO)and the Food and Agriculture Organization of the United Nations(FAO)and the amino acid ratio coefficient method proposed by Shengtao Zhu,the amino acids of Eriobotryae folium at different harvest periods were scored.Results There were seventeen kinds of amino acids,including seven essential amino acids(EAA),nine kinds of children's essential amino acids(CEAA),and nine kinds of medicinal amino acids in Eriobotryae folium at different harvesting periods.The seventeen amino acids were aspartic acid,glutamic acid,serine,glycine,histidine,arginine,threonine,alanine,proline,tyrosine,valine,methionine,cystine,isoleucine,leucine,phenylalanine,and lysine;and the average contents were 3.41-7.23,4.64-9.66,2.05-3.75,2.99-4.95,0.01-1.56,2.33-4.85,2.10-4.03,2.67-5.48,5.37-7.64,1.45-3.49,2.70-5.53,0.01-0.48,3.64-4.78,1.91-4.15,3.96-7.83,2.39-4.60,1.85-3.65 mg·g-1,respectively.There were significant differences in the contents of seventeen kinds of amino acids,total amino acids,total essential amino acids,total essential amino acids for children,medicinal amino acids,and bitter amino acids in Eriobotryae folium at different harvesting stages(P＜0.05).The content of bitter amino acids in total amino acids was stable,and there was no significant difference.The content of essential amino acids was from 44.26%to 50.33%in Eriobotryae folium at different harvesting periods,significantly higher than the WHO/FAO model value(35.00%).The mean values of EAA/NEAA(55.67%)and EAA/TFAA(35.74%)were close to 60%and 40%of the WHO/FAO model values,respectively.The highest content of seventeen kinds of amino acids in Eriobotryae folium was found in July and followed in November.SRC values ranged from 62.53 to 76.17;the highest value was November,the second was August,and the third was July.Lysine was the first limiting amino acid in Eriobotryae folium.Bitter amino acids were positively correlated with medicinal and total amino acids(P＜0.01).Conclusions The amino acids in Eriobotryae folium have a complete variety,reasonable composition,and good development and utilization value.The contents of amino acids in different months varied greatly.July and November were the optimal periods for the rational development and utilization of amino acids in Eriobotryae folium.

Background::Heterotaxy (HTX) is a thoracoabdominal organ anomaly syndrome and commonly accompanied by congenital heart disease (CHD). The aim of this study was to analyze rare copy number variations (CNVs) in a HTX/CHD cohort and to examine the potential mechanisms contributing to HTX/CHD.Methods::Chromosome microarray analysis was used to identify rare CNVs in a cohort of 120 unrelated HTX/CHD patients, and available samples from parents were used to confirm the inheritance pattern. Potential candidate genes in CNVs region were prioritized via the DECIPHER database, and PNPLA4 was identified as the leading candidate gene. To validate, we generated PNPLA4-overexpressing human induced pluripotent stem cell lines as well as pnpla4-overexpressing zebrafish model, followed by a series of transcriptomic, biochemical and cellular analyses. Results::Seventeen rare CNVs were identified in 15 of the 120 HTX/CHD patients (12.5%). Xp22.31 duplication was one of the inherited CNVs identified in this HTX/CHD cohort, and PNPLA4 in the Xp22.31 was a candidate gene associated with HTX/CHD. PNPLA4 is expressed in the lateral plate mesoderm, which is known to be critical for left/right embryonic patterning as well as cardiomyocyte differentiation, and in the neural crest cell lineage. Through a series of in vivo and in vitro analyses at the molecular and cellular levels, we revealed that the biological function of PNPLA4 is importantly involved in the primary cilia formation and function via its regulation of energy metabolism and mitochondria-mediated ATP production. Conclusions::Our findings demonstrated a significant association between CNVs and HTX/CHD. Our data strongly suggested that an increased genetic dose of PNPLA4 due to Xp22.31 duplication is a disease-causing risk factor for HTX/CHD.

Physical exercise can accompany with risks, such as repeated blows to the head, causing mild traumatic brain injury (mTBI), and mTBI will cause continuous cognitive, behavioral and mental problems, bring neurodegeneration and ultimately lead to chronic traumatic encephalopathy (CTE). However, this regular exercise can also be used as a neuroprotective agent against cognitive decline in the brain and affect the plasticity of the brain. Regular exercise can improve the brain learning, memory, recognition and the disease process of CTE by reducing abnormal protein accumulation, promoting neurogenesis, synapse formation, increasing synaptic plasticity and angiogenesis, improving microcirculation, anti-microinflammation and oxidative stress, and promoting mental health. This review analyzes the pathological changes and mechanism of CTE and explore the mechanism of regular exercise in improving neurological function after CTE, so as to provide new ideas for CTE rehabilitation.

The competitive sports are beneficial to cardiovascular system and brain health. However, physical exercise is accompanied with risks. Severe trauma is possible in competitive sports that may impact on the head and body. In recent years, more interests are aroused in sports-related traumatic brain injury(TBI), especially the mild TBI(mTBI). Repetitive mTBI can cause persistent cognitive, behavioral and mental problems, leading to chronic traumatic encephalopathy(CTE) and eventually resulting in neurodegeneration. In this study, the authors summarize the pathological characteristics and mechanism of CTE induced by mTBI due to competitive exercise so as to reveal the pathogenesis of CTE and provide valuable information for early diagnosis, development of disease biomarkers and explore effective therapeutic targets.

Congenital heart disease (CHD) is the most common birth defect worldwide. Long non-coding RNAs (lncRNAs) have been implicated in many diseases. However, their involvement in CHD is not well understood. This study aimed to investigate the role of dysregulated lncRNAs in CHD. We used Gene Expression Omnibus data mining, bioinformatics analysis, and analysis of clinical tissue samples and observed that the novel lncRNA SAP30-2:1 with unknown function was significantly downregulated in damaged cardiac tissues from patients with CHD. Knockdown of lncRNA SAP30-2:1 inhibited the proliferation of human embryonic kidney and AC16 cells and decreased the expression of heart and neural crest derivatives expressed 2 (HAND2). Moreover, lncRNA SAP30-2:1 was associated with HAND2 by RNA immunoprecipitation. Overall, these results suggest that lncRNA SAP30-2:1 may be involved in heart development through affecting cell proliferation via targeting HAND2 and may thus represent a novel therapeutic target for CHD.
Basic Helix-Loop-Helix Transcription Factors ; Cell Proliferation ; Heart Defects, Congenital/genetics* ; Histone Deacetylases ; Humans ; RNA, Long Noncoding/genetics* ; Transcription Factors

Traditional survival methods have a wide application in the field of biomedical research. However, applying traditional survival methods requires data to meet a set of special assumptions while the Random Survival Forest model can overcome this inconvenience. Herein, we used the clinical data of Primary Biliary Cholangitis (PBC) from Mayo Clinic to introduce and demonstrate Random Survival Forest model from mathematical principles, model building, practical example and attentions, aiming to provide a novel method for doing survival analysis.

Traditional survival methods have a wide application in the field of biomedical research. However, applying traditional survival methods requires data to meet a set of special assumptions while the Random Survival Forest model can overcome this inconvenience. Herein, we used the clinical data of Primary Biliary Cholangitis (PBC) from Mayo Clinic to introduce and demonstrate Random Survival Forest model from mathematical principles, model building, practical example and attentions, aiming to provide a novel method for doing survival analysis.

Background and aim Coronavirus disease 2019 (COVID-19) is a life-threatening disease that predominantly causes respiratory failure. The impact of COVID-19 on other organs remains elusive. Herein, we aimed to investigate the effects of COVID-19 on the hepatobiliary system. Methods In the current study, we obtained the clinical records and laboratory results from 66 laboratory-confirmed patients with COVID-19 at the Wuhan Tongji Hospital between 10 February 2020 and 28 February 2020. The detailed clinical features and laboratory findings were collected for analysis. Bioinformatics analysis was conducted to evaluate the correlation between gamma-glutamyl transferase (GGT) and severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) entry receptor angiotensin-converting enzyme 2 (ACE2). Results In this cohort, 30 (51.7%) patients had abnormal liver function on admission, which was associated with disease severity and enriched in the male and diabetic patients. The elevated levels of direct bilirubin (P = 0.029) and GGT (P = 0.004) were common in patients with severe pneumonia when compared with those with mild pneumonia. In addition, elevated levels of GGT (P = 0.003) and aspartate aminotransferase (AST) (P = 0.007) were positively associated with longer hospital stay. The expression of ACE2 was closely associated with GGT in various human tissues because they shared the common transcriptional regulator hepatic nuclear factor-1β (HNF1B). Conclusions Increased GGT levels were common in severe cases and elevated GGT levels were positively associated with prolonged hospital stay and disease severity. Due to the consistent expression with ACE2, GGT is a potent biomarker indicating the susceptibility of SARS-CoV-2 infection.