PURPOSE: Lateral patellar compression syndrome (LPCS) is characterized by a persistent abnormally high stress exerted on the lateral articular surface of the patella due to lateral patellar tilt without dislocation and lateral retinaculum contracture, leading to anterior knee pain. The purpose of this study is to evaluate the efficacy and prognosis of lateral retinaculum release (LRR) combined with chondroplasty in the treatment of LPCS. METHODS: This retrospective study evaluated 40 patients who underwent LRR combined with chondroplasty for LPCS between 2020 and 2021. The assessment included improvement in postoperative tenderness and knee joint function. Patients were evaluated using the Lysholm, Tegner, and International Knee Documentation Committee 2000 scoring systems, as well as the visual analog scale, both preoperatively and postoperatively, with the paired comparisons analyzed using a t-test. Additionally, intraoperative observations were made regarding knee joint lesions, including cartilage damage and osteophyte formation, with analysis by the Chi-square test. RESULTS: The visual analog scale score for tenderness showed a significant decrease after surgery (p < 0.001). Evaluation of knee joint function also indicated significant improvements, as demonstrated by increased Lysholm, Tegner, and International Knee Documentation Committee 2000 scores postoperatively (p < 0.001, p = 0.011, p < 0.001, respectively). Furthermore, all LPCS patients included in the study presented with cartilage injuries and osteophyte formation. Significant differences were noted in the incidence of cartilage damage and osteophyte formation at different locations within the knee among patients with LPCS. CONCLUSION LRR combined with chondroplasty is an effective surgical approach for treating patients with LPCS, with satisfactory recovery observed at the 1-year follow-up. Additionally, the incidence of cartilage damage and osteophyte formation in LPCS patients varies significantly depending on the specific location within the knee joint.
Humans ; Male ; Female ; Retrospective Studies ; Adult ; Middle Aged ; Patella/surgery* ; Knee Joint/physiopathology* ; Recovery of Function ; Young Adult ; Treatment Outcome ; Cartilage, Articular/surgery* ; Adolescent

Objective:To preliminarily explore the association of pregnancy factors with cow's milk protein allergy in infants.Methods:This study was based on data from a subcohort of a study called ge-netic susceptibility to cow's milk allergy in Chinese children,including infants born in Peking University People's Hospital between March 1,2020,and December 31,2020.The infants were divided into a cow's milk protein allergy(CMPA)group and a control group according to whether they had developed cow's milk protein allergy at the age of 1 year.We retrospectively collected the clinical data of infants and their mothers before and during pregnancy,and analyzed the association of multiple factors during pregnancy with cow's milk protein allergy in infants.Results:A total of 278 infants were enrolled in this study,including 52 infants with CMPA and 226 infants without CMPA.Among them,there were 143 boys and 135 girls.The proportion of male infants in the CMPA group(69.2％)was higher than that in the control group(47.3％),and the difference was statistically significant(P=0.004).There were no significant differences in the distribution of birth weight,gestational age at birth,low-birth-weight in-fants,premature,umbilical cord entangle neck,and neonatal asphyxia between the CMPA group and the control group(P＞0.05).The proportion of mothers complicated with autoimmune diseases,anemia or antibiotics exposure during pregnancy in the CMPA group was higher than that in the control group,and there were statistical differences between the two groups(P＜0.05).There was no significant difference in the distribution of other pregnancy complications between the two groups(P＞0.05),such as eclamp-sia/preeclampsia,chronic hypertension/gestational hypertension,diabetes/gestational diabetes,thyroid diseases,and so on.There was no significant difference in the overall distribution of some blood routine indexes during pregnancy between the CMPA group and the control group(P＞0.05).Multivariate Lo-gistic regression analysis showed that male infant,mothers complicated with autoimmune diseases or ane-mia,antibiotic exposure during pregnancy were independent risk factors for cow's milk protein allergy.Conclusion:Male infant,mothers complicated with autoimmune diseases or anemia,antibiotic exposure during pregnancy were independent risk factors for cow's milk protein allergy.

Objective:To investigate the relationship between gestational weight gain (GWG) in twin pregnancies and adverse perinatal outcomes.Methods:This retrospective study included twin pregnant women with live births at≥25 weeks of gestation and their offspring, who delivered at Peking University People's Hospital from January 2012 to October 2022. Total GWG was standardized according to gestational age and categorized into three groups based on the 2009 Institute of Medicine (IOM) guidelines: insufficient GWG (GWG below IOM recommendations), appropriate GWG (GWG within IOM recommendations), and excessive GWG (GWG above IOM recommendations). Comparisons between data of the three groups used analysis of variance, Kruskal-Wallis test or Bonferroni correction or Chi-square partitions. Multivariable logistic regression models and generalized estimating equations with logistic regression models were used to analyze the independent effects of GWG on maternal and neonatal outcomes. Results:A total of 794 twin pregnant women and their 1 588 live-born neonates were included in the study. There were 360 women (45.3%) with appropriate GWG, 356 (44.8%) with insufficient GWG, and 78 (9.8%) with excessive GWG. Both insufficient and excessive GWG were associated with an increased risk of preterm birth [adjusted ORs of 1.39 (95% CI: 1.04-1.88) and 1.70 (95% CI: 1.05-2.78), respectively]. Insufficient GWG was associated with an increased risk of gestational diabetes mellitus (adjusted OR=1.42, 95% CI: 1.00-2.01) and low birth weight infants (adjusted OR=2.04, 95% CI: 1.57-2.66). Insufficient GWG was also associated with a reduced risk of eclampsia or preeclampsia (adjusted OR=0.50, 95% CI: 0.33-0.75), cesarean section (adjusted OR=0.48, 95% CI: 0.30-0.77), discordant twin growth (adjusted OR=0.56, 95% CI: 0.37-0.85), and large for gestational age infants (adjusted OR=0.46, 95% CI: 0.35-0.61). Excessive GWG was associated with an increased risk of eclampsia or preeclampsia (adjusted OR=2.85, 95% CI: 1.65-4.91), and large for gestational age infants (adjusted OR=2.49, 95% CI: 1.60-3.86), while with a decreased risk of low birth weight infants (adjusted OR=0.42, 95% CI: 0.27-0.65). Conclusions:More than half of the twin pregnancies have GWG outside the recommended range of the IOM guidelines. Both insufficient and excessive GWG are associated with adverse perinatal outcomes, particularly an increased risk of preterm birth.

Objective: To investigate the expression of glycoprotein non metastatic melanoma protein B (GPNMB) in renal eosinophilic tumors and to compare the value of GPNMB with CK20, CK7 and CD117 in the differential diagnosis of renal eosinophilic tumors. Methods: Traditional renal tumor eosinophil subtypes, including 22 cases of renal clear cell carcinoma eosinophil subtype (e-ccRCC), 19 cases of renal papillary cell carcinoma eosinophil subtype (e-papRCC), 17 cases of renal chromophobe cell carcinoma eosinophil subtype (e-chRCC), 12 cases of renal oncocytoma (RO) and emerging renal tumor types with eosinophil characteristics [3 cases of eosinophilic solid cystic renal cell carcinoma (ESC RCC), 3 cases of renal low-grade eosinophil tumor (LOT), 4 cases of fumarate hydratase-deficient renal cell carcinoma (FH-dRCC) and 5 cases of renal epithelioid angiomyolipoma (E-AML)], were collected at the Affiliated Drum Tower Hospital of Nanjing University Medical School from January 2017 to March 2022. The expression of GPNMB, CK20, CK7 and CD117 was detected by immunohistochemistry and statistically analyzed. Results: GPNMB was expressed in all emerging renal tumor types with eosinophil characteristics (ESC RCC, LOT, FH-dRCC) and E-AML, while the expression rates in traditional renal eosinophil subtypes e-papRCC, e-chRCC, e-ccRCC and RO were very low or zero (1/19, 1/17, 0/22 and 0/12, respectively); the expression rate of CK7 in LOT (3/3), e-chRCC (15/17), e-ccRCC (4/22), e-papRCC (2/19), ESC RCC (0/3), RO (4/12), E-AML(1/5), and FH-dRCC (2/4) variedly; the expression of CK20 was different in ESC RCC (3/3), LOT(3/3), e-chRCC(1/17), RO(9/12), e-papRCC(4/19), FH-dRCC(1/4), e-ccRCC(0/22) and E-AML(0/5), and so did that of CD117 in e-ccRCC(2/22), e-papRCC(1/19), e-chRCC(16/17), RO(10/12), ESC RCC(0/3), LOT(1/3), E-AML(2/5) and FH-dRCC(1/4). GPNMB had 100% sensitivity and 97.1% specificity in distinguishing E-AML and emerging renal tumor types (such as ESC RCC, LOT, FH-dRCC) from traditional renal tumor types (such as e-ccRCC, e-papRCC, e-chRCC, RO),respectively. Compared with CK7, CK20 and CD117 antibodies, GPNMB was more effective in the differential diagnosis (P<0.05). Conclusion: As a new renal tumor marker, GPNMB can effectively distinguish E-AML and emerging renal tumor types with eosinophil characteristics such as ESC RCC, LOT, FH-dRCC from traditional renal tumor eosinophil subtypes such as e-ccRCC, e-papRCC, e-chRCC and RO, which is helpful for the differential diagnosis of renal eosinophilic tumors.
Humans ; Kidney Neoplasms/pathology* ; Carcinoma, Renal Cell/pathology* ; Diagnosis, Differential ; Angiomyolipoma/diagnosis* ; Biomarkers, Tumor/metabolism* ; Leukemia, Myeloid, Acute/diagnosis* ; Membrane Glycoproteins

Objective:To identify Down syndrome (DS) fetal encephalopathy related genes and signaling pathways via bioinformatics analysis, and to explore their potential mechanisms underlying the occurrence and development of DS neuropathology.Methods:Retrospective study.In December 2021, dataset GSE59630 was downloaded from the gene expression omnibus (GEO), and differentially expressed genes (DEGs) between DS and normal fetal brain tissue were identified by R software.Gene Ontology (GO), Kyoto Encyclopedia of Genes and Genomes (KEGG) enrichment analysis and gene set enrichment analysis (GSEA) were performed on the genes identified.The protein-protein interaction (PPI) network was constructed based on search tool for the retrieval of interacting genes online database and Cytoscape software, and key modules and hub DEGs were identified.Real-time quantitative polymerase chain reaction technique was used to verify the expression of hub genes related to neurodegeneration in brain tissue of 3 pairs of DS and normal fetuses at the gestational age of 22-33 weeks.Results:A total of 225 DEGs were screened out from DS and normal fetal brain tissue, including 18 up-regulated genes and 207 down-regulated genes.GO functional enrichment analysis showed that DEGs were mainly enriched in neurogenesis, neuronal apoptosis, transcriptional regulation, mitochondrial energy metabolism, etc.KEGG pathway enrichment analysis revealed that DEGs were associated with a variety of neurodegenerative diseases.GSEA suggested that apoptosis and inflammatory responses play a vital part in the occurrence of DS neuropathology.Ten hub genes were identified by the PPI network established, and they were mainly related to histone acetylation and transcriptional regulation.According to the tissue verification result, the variations of RAB8A, TBP and TAF6 expression conformed to the microarray data. Conclusions:The key genes and signaling pathways identified by transcriptome analysis of fetal brain tissue facilitate the comprehensive understanding of the molecular mechanism of DS neuropathology.This study provides a novel insight into the clinical diagnosis and treatment of neurodevelopmental abnormalities and mental retardation in DS.

Methods:Clinical data of 187 patients with left-sided hepatolithiasis and underwent laparoscopically or open left-sided hepatectomy from October 2014 to October 2019 at the Second Affiliated Hospital of Anhui Medical University were retrospectively analyzed in this propensity score matching (PSM) study and were matched in terms of age, sex, body mass index, liver function, ASA score, comorbidities, history of biliary surgery, and smoking history on the ratio of 1∶1.There were 47 cases in each group and the mean age were (54.7±12.3)years old(range:34 to 75 years old) and (53.2±12.6) years old (range: 34 to 75 years old) in open and laparoscopically group respectively. The data of operation time, intraoperative blood loss, postoperative hospital-stay, complication rate, biliary fistula rate, stone clearance rate, and stone recurrence rate were compared. The quantitative data were compared using t-test or rank-sum test. Count data were analyzed with χ 2 test or Fisher test. Results:No significant difference was observed in the clinical characteristics of included 94 patients in this study(all P>0.05).The length of the postoperative hospital-stay after OLH was significantly higher than that in the LLH group((10.8±3.1) days vs.(8.5±2.2)days, t=4.085, P=0.000). LLR significantly decreased the incidence of postoperative biliary fistula compared with the OLH (6.3% vs.21.2%, χ 2=4.374, P=0.036) and the rates of postoperative complications in the OLH group was significantly higher than that in the LLH group (48.9% vs.27.6%, χ 2=4.502, P=0.034). Moreover, the stone recurrence rates in the LLH group was significantly lower than that after OLR (4.2% vs. 17.0%, χ 2=4.029, P=0.045). OLH (95 % CI: 1.55 to 10.75, P=0.004) and postoperative complications (95 % CI: 1.29 to 9.52, P=0.013) were independent risk factors for prolonged hospital stay. OLH (95 % CI: 1.428 to 44.080, P=0.018) and residual stones (95 % CI: 1.580 to 62.379, P=0.014) were independent risk factors for the occurrence of postoperative biliary fistula. Biliary fistula (95 % CI: 1.078 to 24.517, P=0.040) was an independent risk factor for the recurrence of stones. Conclusion:Compared with OLH, LLH is safe and effective for the treatment of the primary left-sided hepatolithiasis with the clinical benefits of shorter hospital stay, fewer morbidity and biliary fistula occurrence, and lower stone recurrence rates.

Methods:Clinical data of 187 patients with left-sided hepatolithiasis and underwent laparoscopically or open left-sided hepatectomy from October 2014 to October 2019 at the Second Affiliated Hospital of Anhui Medical University were retrospectively analyzed in this propensity score matching (PSM) study and were matched in terms of age, sex, body mass index, liver function, ASA score, comorbidities, history of biliary surgery, and smoking history on the ratio of 1∶1.There were 47 cases in each group and the mean age were (54.7±12.3)years old(range:34 to 75 years old) and (53.2±12.6) years old (range: 34 to 75 years old) in open and laparoscopically group respectively. The data of operation time, intraoperative blood loss, postoperative hospital-stay, complication rate, biliary fistula rate, stone clearance rate, and stone recurrence rate were compared. The quantitative data were compared using t-test or rank-sum test. Count data were analyzed with χ 2 test or Fisher test. Results:No significant difference was observed in the clinical characteristics of included 94 patients in this study(all P>0.05).The length of the postoperative hospital-stay after OLH was significantly higher than that in the LLH group((10.8±3.1) days vs.(8.5±2.2)days, t=4.085, P=0.000). LLR significantly decreased the incidence of postoperative biliary fistula compared with the OLH (6.3% vs.21.2%, χ 2=4.374, P=0.036) and the rates of postoperative complications in the OLH group was significantly higher than that in the LLH group (48.9% vs.27.6%, χ 2=4.502, P=0.034). Moreover, the stone recurrence rates in the LLH group was significantly lower than that after OLR (4.2% vs. 17.0%, χ 2=4.029, P=0.045). OLH (95 % CI: 1.55 to 10.75, P=0.004) and postoperative complications (95 % CI: 1.29 to 9.52, P=0.013) were independent risk factors for prolonged hospital stay. OLH (95 % CI: 1.428 to 44.080, P=0.018) and residual stones (95 % CI: 1.580 to 62.379, P=0.014) were independent risk factors for the occurrence of postoperative biliary fistula. Biliary fistula (95 % CI: 1.078 to 24.517, P=0.040) was an independent risk factor for the recurrence of stones. Conclusion:Compared with OLH, LLH is safe and effective for the treatment of the primary left-sided hepatolithiasis with the clinical benefits of shorter hospital stay, fewer morbidity and biliary fistula occurrence, and lower stone recurrence rates.

Objective To investigate the characteristics of intestinal microbiota in neonates on the first and third day after birth.Methods A total of 50 healthy singleton neonates who were born between June 15,2016 and August 3,2016 in Shanghai First Maternity and Infant Hospital were enrolled.Their stool samples were collected on the first and third day after birth and the samples were labeled according to the time of collection (D1 and D3 groups,n=50 each).Illumina NexSeq high-throughput sequencing platform was used to sequence the variable region 4 and 5 of all bacterial 16S rRNA genes in the samples.The composition of intestinal microbial communities was determined and the differences between the two groups were compared by Metastats analysis.Results (1) A total of 100 stool samples were sequenced and the retrieved sequences were from 25 bacterial phyla,119 families,227 genera and 159 species.(2) Major phyla in the two groups were the same,namely,Proteobacteria,Frimicutes,Bacteroidetes and Actinobacteria.The relative abundances of Frimicutes (0.27 ± 0.03 vs 0.41 ± 0.05) and Bacteroidetes (0.07 ± 0.01 vs 0.09 ± 0.03) increased over time,while that of Actinobacteria (0.10±0.01 vs 0.01 ±0.00) decreased on day 3.No significant difference in the relative abundance of Proteobacteria (0.51 ±0.03 vs 0.49± 0.05) was observed between D1 and D3 groups.There were significant difference in relative abundances of Frimicutes and Actinobacteria between the two groups (both q=-0.01,both P＜0.05).(3) Among the top ten most abundant families,Enterobacteriaceae,Staphylococcaceae,Enterococcaceae,Streptococcaceae and Lachnospiraceae were detected in both of the two groups.The relative abundances of Enterobacteriaceae (0.25 ± 0.02 vs 0.46 ± 0.06),Staphylococcaceae (0.07 ± 0.02 vs 0.12 ± 0.03),Enterococcaceae (0.04±0.02 vs 0.10±0.04),Streptococcaceae (0.03 ±0.02 vs 0.06±0.01) increased over time,while that of Lachnospiraceae (0.03 ± 0.01 vs 0.02 ± 0.02) decreased on day 3.Only the relative abundance of Enterobacteriaceae had statistical difference between the two groups (q=0.00,P＜0.05).(4) Among the top ten most abundant genera,Staphylococcus,Enterococcus,Streptococcus,Bacteroides and Pseudomonas were detected in both groups.The relative abundances of aerobic and facultative anaerobic bacteria which belonged to genera of Stenotrophomonas,Propionibacterium,Acinetobacter,Bacillus,Sphingomonas and so on decreased on day 3 as compared with those on day 1 (0.00±0.00 vs 0.07±0.02,0.00±0.00 vs 0.06±0.01,0.00±0.00 vs 0.03±0.01,0.00±0.00 vs 0.02±0.01,0.00±0.00 vs 0.02±0.00,all q=0.00,all P＜0.05).However,the relative abundances of anaerobic bacteria which belonged to Bacteroides,Veillonella,Parabacteroides and so on increased on day 3 (0.01 ±0.00 vs 0.08±0.03,0.00±0.00 vs 0.03±0.02,0.00±0.00 vs 0.01 ±0.00,q=0.01,0.01 and 0.00,all P＜0.05).(5) The most abundant species in intestinal microbiota was escherichia coli in both groups.Three less abundant species including lactobacillus gasseri,lactobacillus animalis and bifidobacterium bifidum were detected in both groups.(6) Regardless of the mode of delivery,Staphylococcus,was the highest predominant genera in meconium samples,followed by stenotrophomonas.Stool samples collected on the third day after birth were divided into four groups based on deliver modes and feeding patterns.Neonates who were born abdominally with exclusive breastfed thereafter were different from those of the other three groups in predominant intestinal bacteria,but the difference was not statistically significant.Bifidobacterium and Subdoligranulum were only detected in the vaginally born neonates.Conclusions Meconium is not sterile.Although the intestinal microbiota on the first day of life is different from that on the third day of life,the dominant bacteria are common.During the first three days of life,the relative abundances of aerobic and facultative anaerobic bacteria decreased significantly over time,while the relative abundance of anaerobic bacteria increased.

Objective: To investigate the pathogen spectrum distribution and drug resistance of febrile neutropenic patients with hematological diseases in Shanghai. Methods: A retrospective study was conducted on the clinical isolates from the febrile neutropenic patients hospitalized in the departments of hematology in 12 general hospitals in Shanghai from January 2012 to December 2014. The drug susceptibility test was carried out by Kirby-Bauer method. WHONET 5.6 software was used to analyze pathogenic bacteria and drug susceptibility data. Results: A total of 1 260 clinical isolates were collected from the febrile neutropenic patients. Gram-positive bacteria accounted for 33.3% and Gram-negative bacteria accounted for 66.7%. Klebsiella pneumoniae (12.5%) , Stenotrophomonas maltophilia (9.5%) , Escherichia coli (9.1%) , Pseudomonas aeruginosa (8.7%) , Acinetobacter baumannii (6.6%) , Staphylococcus aureus (5.6%) and Enterococcus faecium (5.0%) were ranked in the first 7 of all pathogens. In the respiratory tract secretions specimens, non-fermented strains accounted for 56.2%. Stenotrophomonas maltophilia accounted for 15.2%. Enterobacteriaceae and coagulase-negative Staphylococci accounted for 42.3% (104/246) and 32.6% (85/246) respectively in blood samples. Enterobacteriaceae and Enterococcus bacteria accounted for 39.4% (76/193) and 28.5% (55/193) respectively in pus specimens. The detection rates of methicillin resistant Staphylococcus aureus (MRSA) and methicillin resistant coagulase negative Staphylococci (MRCNS) were 54.3% and 82.5%, respectively. Staphylococcus bacterial strain was not found to be resistant to linezolid, vancomycin and teicoplanin. The detection rate of Enterococcus vancomycin-resistant strains was 8.9%. Enterococcus was not detected resistance to oxazolidinone strains. Enterobacteriaceae bacteria were highly sensitive to carbapenems. The resistance rate of Pseudomonas aeruginosa to imipenem and meropenem was 34.1% and 15.8%, respectively. Stenotrophomonas maltophilia was more sensitive to minocycline hydrochloride, levofloxacin and sulfamethoxazole. The resistance rate of Acinetobacter baumannii only to cefoperazone-sulbactam was less than 10.0%. The antibiotic resistance rate of Klebsiella pneumoniae, Stenotrophomonas maltophilia, Pseudomonas aeruginosa and Acinetobacter baumanii to most of common antibiotics was lower than that of the CHINET surveillance. Conclusions The pathogenic strain distribution in common infection sites of febrile neutropenic patients was characterized. Bacterial resistance surveillance was better than the CHINET nationwide large sample surveillance in China.

Objective To investigate the value of navigated transcranial magnetic stimulation (nTMS) in preoperative evaluation of epilepsy in functional zones.Methods Retrospective analysis was performed in 12 refractory epilepsy patients had functional cortical lesions and accepted surgery in our hospital from January 2016 to March 2017.The target surgery areas were considered in or near the functional areas by video electroencephalogram and stereotactic electroencephalography or Wada test,nTMS was used to identify the motor or language functional areas before surgery,and direct cortical stimulation (DCS) was performed during the surgery to identify the accuracy of nTMS.Treatment efficacies were evaluated 6-18 months after surgery.Results Hand motor areas were detected in all patients by nTMS,of which 72.7％ patients (8/11,one severe hemispheric atrophy patient was excluded due to functional zone drift to the opposite) were coincided with intraoperative DCS (＜0.5 cm),the deviation distance between 0.5 cm and 1 cm was noted in 27.3％ patients (3/11);motor speech areas were detected in 11 patients with nTMS,72.7％ patients (8/11) were coincided with intraoperative DCS (＜0.5 cm),the deviation distance between 0.5 cm and 1 cm was noted in 27.3％ patients (3/11),18.2％ patients (2/11) were for adjacent relationship,and one was with large difference (＞1.5 cm).And 8 patients had Engel grading Ⅰ outcome (seizure-free),2 had grading Ⅱ outcome (almost seizure-free),and one had grading Ⅲ outcome (worthwhile improvement).No persistent function deficits were noted.Conclusion The nTMS is an accurate,noninvasive and safe functional localization method,which can provide important information for epilepsy patients especially who are not suitable for invasive language evaluation in epilepsy surgery.