Objective:To establish 30-day of age transcutaneous bilirubin (TcB) reference curves for healthy neonates, and to investigate regional variations in bilirubin dynamics.Methods:A multicenter retrospective cohort study was conducted. A total of 220 950 healthy neonates born at a gestational age of 35-<42 weeks, with a birth weight ≥2 000 g, who did not receive phototherapy within 60 h after birth were recruited. All of them underwent remote TcB monitoring using the Bilibaby remote jaundice monitoring system between August 1 st, 2020 and December 31 st, 2024 in 426 hospitals. TcB data were collected within the period from birth to 30-day of age. The P40, P75, and P95 of TcB values were calculated, and dynamic TcB curves for 30-day of age were constructed. Patterns of bilirubin change, rates of change, and transition outcomes were described. Regional comparisons between South and North were conducted using linear mixed-effects models for TcB trajectories and Pearson′s chi-square test for outcome differences. Results:A total of 220 950 neonates were included, of whom 101 711 (46.03%) were female. Gestational age at birth was (38.75±1.12) weeks, and birth weight was (3 272±417) g. TcB levels increased rapidly within 3-day of age, peaked at 4-6-day of age, with peak values at P40, P75, and P95 of 200.6, 239.7 and 275.4 μmol/L (11.8, 14.1 and 16.2 mg/dl), respectively. TcB levels gradually declined thereafter and stabilized after 13-day of age, with values at P40, P75, and P95 fluctuating between 147.9-159.8, 190.4-200.6, and 231.2-239.7 μmol/L (8.7-9.4, 11.2-11.8, 13.6-14.1 mg/dl), respectively. Notably, among neonates categorized as low-or low-intermediate-risk within 3-day of age, 6 700 (12.76%) progressed to intermediate-high or high risk between 4 and 30 days of age. Before 13-day of age, TcB levels in the southern regions were consistently higher than those in the northern regions ( P=0.039); from 14 to 30 days of age, the overall TcB levels had no statistically difference, but the temporal changes in TcB still showed regional differences (degrees of freedom=3, all interaction P<0.05). Among neonates classified as low-or low-intermediate risk within 3-day of age, 25 326 were from southern regions, of whom 4 254 (16.80%) progressed to intermediate-high or high risk between 4 and 30 days of age. In northern regions, 27 193 neonates were classified as low-or low-intermediate risk within 3-day of age, among whom 2 446 (8.99%) progressed to intermediate-high or high risk. The risk progression between the 2 regions had statistically difference ( χ2=716.49, P<0.001). Conclusions:A TcB percentile curve for neonates within 30-day of age was established, revealing that both the overall TcB level and its temporal trend were higher in southern than in northern newborns. These findings provide baseline data to support continuous management of neonatal jaundice.

Objective:To establish 30-day of age transcutaneous bilirubin (TcB) reference curves for healthy neonates, and to investigate regional variations in bilirubin dynamics.Methods:A multicenter retrospective cohort study was conducted. A total of 220 950 healthy neonates born at a gestational age of 35-<42 weeks, with a birth weight ≥2 000 g, who did not receive phototherapy within 60 h after birth were recruited. All of them underwent remote TcB monitoring using the Bilibaby remote jaundice monitoring system between August 1 st, 2020 and December 31 st, 2024 in 426 hospitals. TcB data were collected within the period from birth to 30-day of age. The P40, P75, and P95 of TcB values were calculated, and dynamic TcB curves for 30-day of age were constructed. Patterns of bilirubin change, rates of change, and transition outcomes were described. Regional comparisons between South and North were conducted using linear mixed-effects models for TcB trajectories and Pearson′s chi-square test for outcome differences. Results:A total of 220 950 neonates were included, of whom 101 711 (46.03%) were female. Gestational age at birth was (38.75±1.12) weeks, and birth weight was (3 272±417) g. TcB levels increased rapidly within 3-day of age, peaked at 4-6-day of age, with peak values at P40, P75, and P95 of 200.6, 239.7 and 275.4 μmol/L (11.8, 14.1 and 16.2 mg/dl), respectively. TcB levels gradually declined thereafter and stabilized after 13-day of age, with values at P40, P75, and P95 fluctuating between 147.9-159.8, 190.4-200.6, and 231.2-239.7 μmol/L (8.7-9.4, 11.2-11.8, 13.6-14.1 mg/dl), respectively. Notably, among neonates categorized as low-or low-intermediate-risk within 3-day of age, 6 700 (12.76%) progressed to intermediate-high or high risk between 4 and 30 days of age. Before 13-day of age, TcB levels in the southern regions were consistently higher than those in the northern regions ( P=0.039); from 14 to 30 days of age, the overall TcB levels had no statistically difference, but the temporal changes in TcB still showed regional differences (degrees of freedom=3, all interaction P<0.05). Among neonates classified as low-or low-intermediate risk within 3-day of age, 25 326 were from southern regions, of whom 4 254 (16.80%) progressed to intermediate-high or high risk between 4 and 30 days of age. In northern regions, 27 193 neonates were classified as low-or low-intermediate risk within 3-day of age, among whom 2 446 (8.99%) progressed to intermediate-high or high risk. The risk progression between the 2 regions had statistically difference ( χ2=716.49, P<0.001). Conclusions:A TcB percentile curve for neonates within 30-day of age was established, revealing that both the overall TcB level and its temporal trend were higher in southern than in northern newborns. These findings provide baseline data to support continuous management of neonatal jaundice.

Objective To investigate the clinical characteristics and prognosis of pneumococcal meningitis(PM),and drug sensitivity of Streptococcus pneumoniae(SP)isolates in Chinese children.Methods A retrospective analysis was conducted on clinical information,laboratory data,and microbiological data of 160 hospitalized children under 15 years old with PM from January 2019 to December 2020 in 33 tertiary hospitals across the country.Results Among the 160 children with PM,there were 103 males and 57 females.The age ranged from 15 days to 15 years,with 109 cases(68.1% )aged 3 months to under 3 years.SP strains were isolated from 95 cases(59.4% )in cerebrospinal fluid cultures and from 57 cases(35.6% )in blood cultures.The positive rates of SP detection by cerebrospinal fluid metagenomic next-generation sequencing and cerebrospinal fluid SP antigen testing were 40% (35/87)and 27% (21/78),respectively.Fifty-five cases(34.4% )had one or more risk factors for purulent meningitis,113 cases(70.6% )had one or more extra-cranial infectious foci,and 18 cases(11.3% )had underlying diseases.The most common clinical symptoms were fever(147 cases,91.9% ),followed by lethargy(98 cases,61.3% )and vomiting(61 cases,38.1% ).Sixty-nine cases(43.1% )experienced intracranial complications during hospitalization,with subdural effusion and/or empyema being the most common complication[43 cases(26.9% )],followed by hydrocephalus in 24 cases(15.0% ),brain abscess in 23 cases(14.4% ),and cerebral hemorrhage in 8 cases(5.0% ).Subdural effusion and/or empyema and hydrocephalus mainly occurred in children under 1 year old,with rates of 91% (39/43)and 83% (20/24),respectively.SP strains exhibited complete sensitivity to vancomycin(100% ,75/75),linezolid(100% ,56/56),and meropenem(100% ,6/6).High sensitivity rates were also observed for levofloxacin(81% ,22/27),moxifloxacin(82% ,14/17),rifampicin(96% ,25/26),and chloramphenicol(91% ,21/23).However,low sensitivity rates were found for penicillin(16% ,11/68)and clindamycin(6% ,1/17),and SP strains were completely resistant to erythromycin(100% ,31/31).The rates of discharge with cure and improvement were 22.5% (36/160)and 66.2% (106/160),respectively,while 18 cases(11.3% )had adverse outcomes.Conclusions Pediatric PM is more common in children aged 3 months to under 3 years.Intracranial complications are more frequently observed in children under 1 year old.Fever is the most common clinical manifestation of PM,and subdural effusion/emphysema and hydrocephalus are the most frequent complications.Non-culture detection methods for cerebrospinal fluid can improve pathogen detection rates.Adverse outcomes can be noted in more than 10% of PM cases.SP strains are high sensitivity to vancomycin,linezolid,meropenem,levofloxacin,moxifloxacin,rifampicin,and chloramphenicol.[Chinese Journal of Contemporary Pediatrics,2024,26(2):131-138]

Transcatheter aortic valve replacement(TAVR)has emerged as a promising therapeutic alternative for addressing aortic valve-related pathologies.However,the occurrence of rapid arrhythmias linked to TAVR procedures is progressively drawing scrutiny.Presently,pharmacologic interventions constitute the mainstay of managing atrial arrhythmias related to TAVR,while the potential of ablation as a viable treatment modality remains undefined.Notably,in cases where the arrhythmia's genesis is presumed to be intricately linked to the prosthetic valve,the practicality and safety of ablation procedures remain unverified.Our institution has successfully ventured into radiofrequency ablation for a distinctive patient presenting with this intricate condition,thereby tentatively affirming the efficacy and safety of catheter ablation administered on the surface of prosthetic valves.

Objective To observe the sedative and analgesic effects of bupivacaine hydrochloride injection combined with neostigmine methylsulfate injection in critically ill patients after general anesthesia operation.Methods Acute and critical patients who were to undergo general anesthesia were randomly divided into control group and treatment group.Two groups received general anesthesia combined with epidural block anesthesia.After operation,the control group was continuously pumped 0.75％bupivacaine hydrochloride injection 45 mL through the epidural catheter,the treatment group was given 2 μg·kg-1 neostigmine methylsulfate injection on the basis of continuous pumping of bupivacaine injection through epidural catheter in the control group.Comparing the pain numerical rating scale(NRS)for 12 h,24 h,48 h,and 72 h of postoperative analgesia and the Ramsay sedation scores(Ramsay),hemodynamic index and safety in the two groups.Results Treatment group were enrolled 32 cases,2 cases dropped out,and 30 cases were finally included in the statistical analysis.Control group were enrolled 32 cases,2 cases dropped out,and 30 cases were finally included in the statistical analysis.The 12-hour Ramsay in the control group and the treatment group were(2.62±0.46)and(2.58±0.51)points;the 24-hour Ramsay were(2.32±0.45)and(2.27±0.39)points;the 48-hour Ramsay were(2.12±0.36)and(2.04±0.32)points;and the 72-hour Ramsay were(1.68±0.34)and(1.57±0.29)points,respectively;the 12-hour NRS were(1.64±0.26)and(1.53±0.28)points;the 24-hour NRS were(2.14±0.37)and(2.23±0.34)points;the 48-hour NRS were(2.57±0.39)and(2.44±0.42)points;the 72-hour NRS were(2.89±0.46)and(2.61±0.51)points,respectively.The NRS score at 72 h after operation in the treatment group was significantly lower than that in the control group(P＜0.05).The 12 h heart rate(HR)in the control group and treatment group were(75.90±6.45)and(75.42±6.24)time·min-1;24 h HR were(76.37±6.28)and(76.43±5.34)times·min-1,48 h HR(78.57±5.14)and(76.95±5.27)time·min-1;72 h HR were(76.49±4.41)and(78.17±4.64)time·min-1,respectively.The 12 h mean arterial pressure(MAP)in the control group and treatment group were(94.34±7.86)and(95.24±7.45)mmHg;24 h MAP were(95.71±7.55)and(96.56±7.29)mmHg;48 h MAP were(96.58±7.36)and(97.64±7.69)mmHg;72 h MAP were(97.63±8.15)and(96.77±8.53)mmHg,respectively the differences of the above indexes between the control group and the treatment group were not statistically significant(all P＞0.05).The extubation time of control group and treatment group were(63.42±16.34)and(59.56±17.27)h,respectively,with no statistical significance(P＞0.05).The adverse drug reactions of two groups were nausea and vomiting,use of rescue analgesics 12 h after surgery,and wound infection.The incidences of postoperative adverse drug reactions in the control group and the treatment group were 26.67％and 23.33％,respectively,with no statistical significance(P＞0.05).Conclusion Bupivacaine hydrochloride injection combined with neostigmine methylsulforte injection can significantly enhance the epidural analgesia effect in acute and critical patients undergoing general anesthesia,and the safety is better.

Objective To observe the sedative and analgesic effects of bupivacaine hydrochloride injection combined with neostigmine methylsulfate injection in critically ill patients after general anesthesia operation.Methods Acute and critical patients who were to undergo general anesthesia were randomly divided into control group and treatment group.Two groups received general anesthesia combined with epidural block anesthesia.After operation,the control group was continuously pumped 0.75％bupivacaine hydrochloride injection 45 mL through the epidural catheter,the treatment group was given 2 μg·kg-1 neostigmine methylsulfate injection on the basis of continuous pumping of bupivacaine injection through epidural catheter in the control group.Comparing the pain numerical rating scale(NRS)for 12 h,24 h,48 h,and 72 h of postoperative analgesia and the Ramsay sedation scores(Ramsay),hemodynamic index and safety in the two groups.Results Treatment group were enrolled 32 cases,2 cases dropped out,and 30 cases were finally included in the statistical analysis.Control group were enrolled 32 cases,2 cases dropped out,and 30 cases were finally included in the statistical analysis.The 12-hour Ramsay in the control group and the treatment group were(2.62±0.46)and(2.58±0.51)points;the 24-hour Ramsay were(2.32±0.45)and(2.27±0.39)points;the 48-hour Ramsay were(2.12±0.36)and(2.04±0.32)points;and the 72-hour Ramsay were(1.68±0.34)and(1.57±0.29)points,respectively;the 12-hour NRS were(1.64±0.26)and(1.53±0.28)points;the 24-hour NRS were(2.14±0.37)and(2.23±0.34)points;the 48-hour NRS were(2.57±0.39)and(2.44±0.42)points;the 72-hour NRS were(2.89±0.46)and(2.61±0.51)points,respectively.The NRS score at 72 h after operation in the treatment group was significantly lower than that in the control group(P＜0.05).The 12 h heart rate(HR)in the control group and treatment group were(75.90±6.45)and(75.42±6.24)time·min-1;24 h HR were(76.37±6.28)and(76.43±5.34)times·min-1,48 h HR(78.57±5.14)and(76.95±5.27)time·min-1;72 h HR were(76.49±4.41)and(78.17±4.64)time·min-1,respectively.The 12 h mean arterial pressure(MAP)in the control group and treatment group were(94.34±7.86)and(95.24±7.45)mmHg;24 h MAP were(95.71±7.55)and(96.56±7.29)mmHg;48 h MAP were(96.58±7.36)and(97.64±7.69)mmHg;72 h MAP were(97.63±8.15)and(96.77±8.53)mmHg,respectively the differences of the above indexes between the control group and the treatment group were not statistically significant(all P＞0.05).The extubation time of control group and treatment group were(63.42±16.34)and(59.56±17.27)h,respectively,with no statistical significance(P＞0.05).The adverse drug reactions of two groups were nausea and vomiting,use of rescue analgesics 12 h after surgery,and wound infection.The incidences of postoperative adverse drug reactions in the control group and the treatment group were 26.67％and 23.33％,respectively,with no statistical significance(P＞0.05).Conclusion Bupivacaine hydrochloride injection combined with neostigmine methylsulforte injection can significantly enhance the epidural analgesia effect in acute and critical patients undergoing general anesthesia,and the safety is better.

Bone defects caused by different causes such as trauma, severe bone infection and other factors are common in clinic and difficult to treat. Usually, bone substitutes are required for repair. Current bone grafting materials used clinically include autologous bones, allogeneic bones, xenografts, and synthetic materials, etc. Other than autologous bones, the major hurdles of rest bone grafts have various degrees of poor biological activity and lack of active ingredients to provide osteogenic impetus. Bone marrow contains various components such as stem cells and bioactive factors, which are contributive to osteogenesis. In response, the technique of bone marrow enrichment, based on the efficient utilization of components within bone marrow, has been risen, aiming to extract osteogenic cells and factors from bone marrow of patients and incorporate them into 3D scaffolds for fabricating bone grafts with high osteoinductivity. However, the scientific guidance and application specification are lacked with regard to the clinical scope, approach, safety and effectiveness. In this context, under the organization of Chinese Orthopedic Association, the Expert consensus for the clinical application of autologous bone marrow enrichment technique for bone repair ( version 2023) is formulated based on the evidence-based medicine. The consensus covers the topics of the characteristics, range of application, safety and application notes of the technique of autologous bone marrow enrichment and proposes corresponding recommendations, hoping to provide better guidance for clinical practice of the technique.

Objective: Patients with a history of ischemic stroke are at risk for a second ischemic stroke. This study aimed to investigate the relationship between carotid plaque enhancement on perfluorobutane microbubble contrast-enhanced ultrasonography (CEUS) and future recurrent stroke, and to determine whether plaque enhancement can contribute to risk assessment for recurrent stroke compared with the Essen Stroke Risk Score (ESRS). Materials and Methods: This prospective study screened 151 patients with recent ischemic stroke and carotid atherosclerotic plaques at our hospital between August 2020 and December 2020. A total of 149 eligible patients underwent carotid CEUS, and 130 patients who were followed up for 15–27 months or until stroke recurrence were analyzed. Plaque enhancement on CEUS was investigated as a possible risk factor for stroke recurrence and as a possible adjunct to ESRS. Results: During follow-up, 25 patients (19.2%) experienced recurrent stroke. Patients with plaque enhancement on CEUS had an increased risk of stroke recurrence events (22/73, 30.1%) compared to those without plaque enhancement (3/57, 5.3%), with an adjusted hazard ratio (HR) of 38.264 (95% confidence interval [CI]:14.975–97.767; P < 0.001) according to a multivariable Cox proportional hazards model analysis, indicating that the presence of carotid plaque enhancement was a significant independent predictor of recurrent stroke. When plaque enhancement was added to the ESRS, the HR for stroke recurrence in the high-risk group compared to that in the low-risk group (2.188; 95% CI, 0.025–3.388) was greater than that of the ESRS alone (1.706; 95% CI, 0.810–9.014). A net of 32.0% of the recurrence group was reclassified upward appropriately by the addition of plaque enhancement to the ESRS. Conclusion Carotid plaque enhancement was a significant and independent predictor of stroke recurrence in patients with ischemic stroke. Furthermore, the addition of plaque enhancement improved the risk stratification capability of the ESRS.

OBJECTIVE: To investigate the role of acetylated modification induced by coactivator p300 in lipopolysaccharide (LPS)- induced inflammatory mediator synthesis and its molecular mechanism. METHODS: Agilent SurePrint G3 Mouse Gene Expression V2 microarray chip and Western blotting were used to screen the molecules whose expression levels in mouse macrophages (RAW246.7) were correlated with the stimulation intensity of LPS. Electrophoretic mobility shift assay (EMSA) and chromatin immunoprecipitation (chip-qPCR) were used to verify the binding of the molecules to the promoters of IL-6 and TNF-α genes. The effects of transfection of RAW246.7 cells with overexpression or interfering plasmids on IL-6 and TNF-α synthesis were evaluated with ELISA, and the binding level of the target molecules and acetylation level of H3K27 in the promoter region of IL-6 and TNF-α genes were analyzed by chromatin immunoprecipitation sequencing technique (chip-seq). RESULTS: Gene microarray chip data and Western blotting both confirmed a strong correlation of p300 expression with the stimulation intensity of LPS. Immunocoprecipitation confirmed the binding between p300 and c-myb. The results of EMSA demonstrated that c-myb (P < 0.05), but not p300, could directly bind to the promoter region of IL-6 and TNF-α genes; p300 could bind to the promoters only in the presence of c-myb (P < 0.05). The expressions of p65, p300 and c-myb did not show interactions. Both p300 overexpression and LPS stimulation could increase the level of promoter-binding p300 and H3K27 acetylation level, thus promoting p65 binding and inflammatory gene transcription; such effects were obviously suppressed by interference of c-myb expression (P < 0.05). Interference of p65 resulted in inhibition of p65 binding to the promoters and gene transcription (P < 0.05) without affecting p300 binding or H3K27 acetylation level. CONCLUSION LPS can stimulate the synthesis of p300, whose binding to the promoter region of inflammatory genes via c-myb facilitates the cohesion of p65 by inducing H3K27 acetylation, thus promoting the expression of the inflammatory genes.
Acetylation ; Animals ; Inflammation Mediators ; Interleukin-6/metabolism* ; Lipopolysaccharides/pharmacology* ; Mice ; Tumor Necrosis Factor-alpha/metabolism*