Extremely low birth weight infants (ELBW)are those premature babies whose birth weight are below 1 000 g.In recent years,with the rapid development of perinatal medicine,survival rates of the ELBW in the developed countries has reached more than 80％,but with the increase of survival rates,the present living situation and the long-term quality of life begin to attract the neonatal physicians' attention.The growth and nutrition status of ELBW are not as well as those full maturity,neither do the certain problems,including long-term respiratory system,nervous system,education and employment.

Objective To preliminarily explore the expresssion of the Hedgehog signaling pathway (HH) after different liver trauma, and provide basis for the blockaded effection of HH and the potentiality of new traditional Chinese medicine exploition. Methods After adaptive breeding for one week, a cohort of 140 male SPF Fisher 344 rats were randomly divided into Retrorsine injection (R) indicated the toxical of chemical damage of liver, partial hepatectomy (PH) indicated the acute liver trauma, retrorsine/partial hepatectomy (R/PH) for the hepatic stem cells regeneration, and normal control (N) groups. The administering of retrorsine or placebo, and PH or sham operation were performed as Gordon’s matheds. RT-PCR, real-time PCR and immunohistochemistry were performed to detect the expression of the constituents related to HH after liver damage. Results RT-PCR demonstrated that the mRNA expression of IHH, PTCH, Smo, Gli1, Gli2, Gli3 were all activated in primary liver cells after different kinds of liver damage. The results of real-time PCR analysis indicated an interaction effect existing between the treatment and the time in 3 Hedgehog-related constituents (signaling molecule IHH, indicators of the HH activation Ptc, Gli1) (all P<0.001). The protein expression of PTCH in liver tissue section was confirmed by immunohistochemistry, which differed in the duration in PH and R/PH groups. Conclusion The HH was abnormally activated during the different liver trauma. It’s maybe an important signaling pathway during the liver’s reaction after damage.

Lung transplantation has become the most effective treatment of end-stage lung diseases. Along with persistent optimization of lung transplantation technique and perioperative management, the short-term clinical efficacy after lung transplantation has been significantly improved, whereas the long-term clinical prognosis remains unoptimistic. Besides chronic lung allograft dysfunction, postoperative malignant tumors also threaten the long-term survival of the recipients. Common malignant tumors following lung transplantation include nonmelanoma skin cancer, posttransplant lymphoproliferative disease and lung cancer. After solid organ transplantation, a large majority of the recipients require lifelong immunosuppressive therapy. The intensity of immunosuppressive therapy for the lung transplant recipients is generally higher than other organ transplant recipients. Immunosuppression is the main factor which leads to the impairment of anti-tumor immune monitoring function and promotes the incidence and development of malignant tumors. In this article, the risk factors, prevention and treatment of the most common malignant tumors after lung transplantation were reviewed, aiming to provide reference for comprehensive diagnosis and treatment of malignant tumors following lung transplantation.

Objective:To investigate the correlation between triglyceride-glucose (TyG) index and high on-treatment platelet reactivity (HTPR) during clopidogrel treatment in patients with ischemic stroke.Methods:Patients with ischemic stroke who received maintenance dose of clopidogrel (75 mg/d) in the Department of Neurology, Guangdong Provincial Hospital of Chinese Medicine from January 2017 to March 2021 were retrospectively included. The highest quartile (Q4) of the TyG index was defined as insulin resistance. Platelet reactivity was assessed by thromboelastogram and clopidogrel HTPR was defined as the clot strength induced by adenosine diphosphate (MA ADP) >47 mm. Multivariate regression model was used to analyze the independent correlation between TyG index and platelet reactivity. Results:A total of 83 patients were included. The TyG index showed a linear correlation with MA ADP. The patients were divided into 4 groups according to the quartile of TyG index. The incidence of clopidogrel HTPR increased significantly with the increase of the quartile of the TyG index ( Ptrend=0.017). Multivariate analysis showed that there was a significant independent correlation between insulin resistance and clopidogrel HTPR (odds ratio 4.597, 95% confidence interval 1.285-16.446; P=0.019). Conclusions:In patients with ischemic stroke treated with clopidogrel, the incidence of clopidogrel HTPR gradually increases with the increase of the quartile of the TyG index. The insulin resistance assessed by the TyG index is independently associated with clopidogrel HTPR.

Lung transplantation is the only effective treatment of end-stage lung diseases. Nevertheless, shortage of donor lungs has become increasingly prominent worldwide. A large quantity of patients died while waiting for lung transplantation. Urgent lung transplantation is a prioritized allocation strategy for donor lung transplantation according to the urgency of diseases, aiming to shorten the waiting time for donor lungs and reduce the fatality of patients on the waiting list for lung transplantation. However, no consensus has been reached worldwide on the definition, criteria and application of the terminology of urgent lung transplantation. In addition, the survival and net benefits of lung transplant recipients based on this allocation system are still controversial. On the basis of previous clinical research on urgent lung transplantation, the definition criteria, risk factors, survival outcomes, limitations and optimization measures were explicitly elucidated in this article, aiming to provide theoretical reference for comprehensive evaluation of the feasibility of urgent lung transplantation and further optimizing the allocation system of donor lungs.

Objective To explore the association between BMI and the risk of developing cardiac surgery associated acute kidney injury (CS-AKI),mortality of AKI and AKI requiring renal replacement therapy (AKI-RRT) after cardiac surgery.Methods Clinical data of patients undergoing cardiac surgery from January 2011 to December 2015 in Zhongshan Hospital of Fudan University were prospectively collected.Patients were divided into four groups according to BMI classification of Chinese population.Adjustment for selection bias was further assessed using propensity score method (PSM) to evaluate the role of BMI in the development of AKI.Results A total of 8442 patients were enrolled,among which 1092 patients successfully matched through PSM.The AKI incidences were respectively 30.3％,33.3％,38.6％ and 46.8％ in four BMI groups (P ＜ 0.01) before PSM.The AKI incidences were respectively 31.9％,35.2％,42.5％ and 42.9％ in four BMI groups (P=0.016) after PSM.The risk of developing AKI increased by 19.9％ as the BMI increased per 5 kg/m2 (95％ CI:1.070-1.344,P=0.002).The hospital mortality of patient (overall,AKI,AKI-RRT) in four groups was not statistically different after PSM (P ＞ 0.05),but overweight group always had the lowest mortality.Conclusions BMI is a risk factor for AKI after cardiac surgery,and the AKI incidence increases with increasing BMI in a certain range.

Objective To screen and prepare a broad-spectrum monoclonal antibody against Strep-tococcus pneumoniae ( S. pneumoniae) surface protein A ( PspA) and to evaluate its potential in clinical prac-tice. Methods Hybridoma cells were screened and inoculated into the abdominal cavities of BALB/c mice to prepare antibodies in ascites. Monoclonal antibodies were obtained by ammonium sulfate precipitation and protein A affinity chromatography and then identified by SDS-PAGE and Western blot. Their specificity, iso-forms and killing activities in vitro were analyzed. Results A broad-spectrum monoclonal antibody that rec-ognized PspA subclasses 2, 3 and 4 was obtained. Its in vitro killing rate against S. pneumoniae reached 40. 3％. Conclusions A broad-spectrum monoclonal antibody that could specifically bind to PspA was suc-cessfully prepared with a strong in vitro killing activity. This study provided reference for clinical diagnosis of S. pneumoniae-related diseases, quality assessment of S. pneumoniae vaccines and further research on mono-clonal antibody therapeutics.

Objective:To evaluate the reliability and validity of the Chinese version of the Edinburgh visual gait score (EVGS-CN) for children with cerebral palsy.Methods:The EVGS-CN was established following international guidelines for translation and cross-cultural validation of health status questionnaires. Videos of 30 children with cerebral palsy were assessed independently by six raters (with different levels of experience in gait analysis) using the EVGS-CN. Inter- and intra- observer reliability were evaluated using intraclass correlation coefficients (ICCs). The correlation analysis and group comparison were used to test the technique′s criteria-related validity, convergent validity, and discriminant validity.Results:The ICC values of the 17 items in the EVGS-CN ranged from 0.20 to 0.87 for inter-observer reliability, and from 0.41 to 0.90 for intra-observer reliability. Most items showed good inter- and intra-observer reliability among experienced raters, but only a moderate level when used by inexperienced raters. The EVGS-CN results were strongly correlated with those of physician rating scale (PRS) ( r=0.77, P≤0.001) and observational gait scale (OGS) ( r=-0.85, P≤0.001), moderately correlated with the total gross motor function measure-D/E (GMFM-D/E) score ( r=-0.55, P≤0.01), and strongly correlated with 10MWT times ( r=-0.69, P≤0.001) and timed up and go (TUG) times ( r=0.60, P≤0.001). Moreover, significant differences in average EVGS score were found between different gross motor function classification system (GMFCS) levels and between affected limbs on different sides. Conclusion:The EVGS-CN demonstrates satisfactory reliability and validity in evaluating children with cerebral palsy when it is used by an experienced or inexperienced rater.

Essential palatal tremor is relatively rare in clinical practice, which manifests involuntary and rhythmic contraction of soft-palate along with auditory click. The cause is unknown and there is no specific treatment at present. This article reports a female patient with essential palatine tremor, who presented with involuntarily beating of soft palate, disappeared during sleep, had sensory tricks, and gradually developed mental and psychological problems such as anxiety disorders. After treatment with integrated traditional Chinese and Western medicine, the symptoms improved. The clinical features of the case were analyzed, relevant literature was reviewed, and the possible etiology and characteristics of the disease were explored, so as to provide reference for clinical diagnosis and treatment.

Objective By comparing with arthroscopic rotator cuff repair alone,to explore the efficacy and difference of leukocyte poor platelet-rich plasma(LP-PRP)and leukocyte rich platelet-rich plasma(LR-PRP)in arthroscopic rotator cuff repair.Methods Sixty patients with total rotator cuff tear accompanied by arthroscopic rotator cuff repair admitted to the Affiliated Hospital of North China University of Science and Technology from October 2021 to September 2022 were included and randomly divided into control group(n=20),LP-PRP group(n=20)and LR-PRP group(n=20).The control group only received arthroscopic rotator cuff repair.The LP-PRP group was injected with leukocyte poor platelet-rich plasma(LP-PRP)into the sutured torn tendon after the same operation,and the LR-PRP group was injected with leukocyte rich platelet-rich plasma(LR-PRP)into the sutured torn tendon after the same operation.The postoperative rehabilitation training plan of the three groups was the same,and the postoperative follow-up and evaluation were conducted for 1 year.It included pain score(VAS score),shoulder joint function score(CMS,UCLA,ASES score),retear rate and related complications.Results All patients were followed up.(1)VAS score:Compared with the LR-PRP group and the control group,the results were statistically significant only at 1,3 and 6 weeks after surgery(P<0.05);There was no statistical significance between the LR-PRP group and the control group at 1 week,3 weeks,6 weeks,3 months,6 months and 12 months after surgery(P>0.05).(2)CMS,UCLA and ASES scores:There were no significant differences between the LP-PRP group and the LR-PRP group at 3 months,6 months and 12 months after surgery(P>0.05);Compared with LP-PRP group and LR-PRP group,there were significant differences in each follow-up time point of control group(P<0.05).(3)Retear rate:In the LP-PRP group,there was 1 retear in the LR-PRP group(tear rate 5%),and 3 in the control group(tear rate 15%).There was no statistically significant difference between the three groups(P>0.05).(4)There were no postoperative complications in 60 patients.Conclusions Compared with arthroscopic rotator cuff repair alone,although the application of LP-PRP and LR-PRP could not reduce the rate of retear,it could significantly improve the shoulder joint function of patients,and LP-PRP could significantly reduce the pain of patients with rotator cuff injury in the early postoperative period(within 6 weeks),with no postoperative complications,and the short-term clinical results of patients were satisfactory.