Objective To explore the effect of humidified high flow nasal cannula (HHFNC) in neonatal with severe pneumonia.Methods Forty-two cases of neonatal with severe pneumonia according to different treatment methods were divided into treatment group (20 cases) and control group (22 cases).Treatment group was given HHFNC,control group was given the wet bottle oxygen nasal cannula or mask.Disappearance of symptoms and hospital stay in two groups,blood oxygen saturation (SpO2),partial pressure of oxygen (PaO2),partial pressure of earbondioxidc (PaCO2) and respiratory rate in treatment group before and after the application of HHFNC were compared.Results The effective rate in treatment group was significantly higher than that in control group [90.00％ (18/20) vs.63.64％ (14/22)],which reached statistical significance (P ＜0.05).Disappearance of symptoms and hospital stay in treatment group were shorter than those in control group,and mechanical ventilation rate was lower than that in control group [10.00％(2/20) vs.45.45％(10/22)],which reached statistical significance (P ＜ 0.05).SpO2 and PaO2 at application of HHFNC after 12,24 h and 1 h after evacuation of HHFNC were significantly increased eompared with those before [0.921 ± 0.027,0.955 ± 0.021,0.958 ± 0.016 vs.0.865 ± 0.045; (83.4 ± 28.3),(89.8 ±20.4),(92.8 ±12.6) mmHg (1 mmHg =0.133 kPa) vs.(52.8 ±10.1) mmHg],PaCO2 at application of HHFNC after 24 h and 1 h after evacuation of HHFNC were significantly reduced compared with those before [(46.1 ±6.3),(43.7 ±7.2) mmHg vs.(59.7 ± 8.3) mmHg],which reached statistical significance (P ＜0.05).Respiratory rate was decreased with the treatment time,which reached statistical significance (P＜ 0.05).Conclusion Application of HHFNC in neonatal with severe pneumonia is effective and woorth promoting.

Objective To investigate the mechanisms and effects of Sorafenib on cytotoxic sensitivity of allo-reactive natural killer(Allo-NK) cells against human multi-drug resistant nasopharyngeal carcinoma CNE2/DDP cells which expressing highly ATP-binding cassette superfamily G member 2(ABCG2)(abbr.as ABCG2HighCNE2/DDP cells).Methods ABCG2HighCNE2/DDP and Allo-NK cells were isolated by magnetic bead technique.The target cells were divided into 3 groups: a) treated group(ABCG2HighCNE2/DDP cells incubated with 10 ng/ml sorafenib for 4h);b) untreated group(conventionally cultured ABCG2HighCNE2/DDP cells);and c) control group(conventionally cultured K562 cells).Expression rates of ABCG2 in treated and untreated groups,and of five NKG2D-ligands(MICA,MICB,ULBP1,ULBP2,ULBP3) were evaluated by flow cytometry.The cytotoxic effects of NK cells against different groups of target cells were detected with LDH releasing assay.Results Expression rate of ABCG2 in isolated CNE2/DDP cells was 91.40%?2.32%.The purity of sorted CD3-CD16+CD56+ Allo-NK cells was 90% and higher.The expression rates of NKG2D-ligands(MICA,MICB,ULBP1,ULBP2 and ULBP3) in untreated group were 2.92%?0.33%,4.27%?0.33%,5.80%?0.62%,11.10%?3.15% and 7.75%?1.14%,respectively,which were remarkablely higher than that in treated group(10.38%?1.23%,10.68%?1.26%,11.62%?1.22%,43.24%?4.42% and 11.91%?0.88%,respectively,P

Objective To observe the therapeutic effect of reformed subhibernation therapy on status epilepticus in patients with severe viral encephalitis.Methods 96 children with severe viral encephalitis complicated by status epilepticus were randomly divied into control group and experimental group.Control group: routine treatment was given that includes anticonvulsivus,ice compress and conventional therapy.The anticonvulsivus was applied in five drugs: the same doses of wintermin and phenergan mixed up,10% chlorpromazine hydrochloride,luminal,valii,the drugs were delivered when convulsion occurred otherwise not.Experimental group: in addition to routine treatment reformed subhibernation therapy was given.The anticonvulsivus drug's was delivered in return each 4-6 h according to the drugs half life.And anticonvulsivus drugs were applied for 2 d then gotten off.The clinical manifestation,auxiliary examination and therapeutic efficacy of patients in two groups were observed.Results All of 96 cases were analyzed.The lotal effective rate in experimental group is higher than that in control group(?2=5.872,P

Objective To measure the level of interleukin-15(IL-15) in serum and its expression in lung tissues,and analyze the correlations between IL-15 and IL-4,IFN-?,eosinophil(Eos),and explore the effect of IL-15 on bronchial asthma.Methods Thirty femal BALB/C mice were randomly divided into three group(n=10),group A(asthma model),group B(corticosteroid treatment) and group C(normal control).All mice were killed 24 h after final OVA challenge.Blood were obtained for measurement of serum IgE,IL-4,IFN-? and IL-15 levels by enzyme-linked immunoabsorbent assay(ELISA).Bronchoalveolar lavage fluid(BLAF) was collected for Eos count.The left lungs were isolated for pathological examination.The lung sections were stained with hematoxylin and eosin(HE).The expressions of IL-15 in lung tissues were measured by immunohistochemical SP method.Results ①The mouse asthma model appeared ethological changes specific to asthma,the Eos count in BALF was increased,and IgE and IL-4 levels in serum were also increased compared with control group(P

Objective To observe the influence of renal sympathetic denervation (RSD) on renal interstitial fibrosis and transforming growth factor beta 1(TGF-β1) and microRNA-21 (miR-21) in rats with unilateral ureteral obstruction(UUO).Methods 40 male Wistar rats were randomly divided into UUO group (A group,n=10),sham UUO group (B group,n=10),RSD+UUO group (C group,n=1O) and RSD + sham UUO group (D group,n=10).Rats in A group and C group underwent unilateral ureteral ligation,while those in B group and D group underwent sham operation.Rats in C group and D group were followed by RSD.Rats were sacrificed at 21 days after the operation to evaluate the fibrosis by Masson staining.Immunohistochemical staining and Western blotting were used to detect the expressions of collagen I (COL-Ⅰ),collagen Ⅲ (COL-Ⅲ) and TGF-β1 in four groups.The expression of miR-21 was detected by fluorescence in situ hybridization (FISH) and quantitative real-time PCR (RT-qPCR).Results A large amount of collagen deposition was observed in the renal interstitial area in A and C group compared to either B or D group (P ＜ 0.05),but the change in C group was decreased significantly than that in A group (P ＜ 0.05).Similarly,the expressions of COL-Ⅰ,COL-Ⅲ,TGF-β1and miR-21 were obviously higher in A and C group compared to either B or D group (P ＜ 0.05),but those change in C group were decreased significantly than those in A group (P ＜ 0.05).The above indexes were not significantly different between B group and D group (P ＞ 0.05).Conclusion RSD may relieve the renal interstitial fibrosis in UUO rats,and down-regulate the expression of TGF-β1 and miR-21.

Purpose To detect the expression of CD90 in invasive ductal breast carcinoma with different molecular subtypes and to explore its clinical significance.Methods The expression of CD90,ER,PR,Ki-67 and HER-2 were detected in 80 cases of invasive ductal breast carcinoma tissue and 20 cases of breast benign lesion with immunohistochemical method.The relationship between CD90 and clinicopathological parameters were analyzed.Results The positive expression rate of CD90 in invasive ductal breast carcinoma and breast benign lesion tissues were 62.5％ and 20.0％,respectively (P ＜0.001).The expression of CD90 in invasive ductal breast carcinoma was correlated with lymph node metastasis (P ＜ 0.05),but not with age,tumor size,TNM staging and histological grade (P ＞ 0.05).Among different molecular subtypes,CD90 expression level in Luminal A type was the lowest (40.0％),and the level in triple negative type was the highest (82.4％) (P ＜0.05).CD90 expression level was negatively correlated with ER (r=-0.342,P＜0.05) orPR (r=-0.374,P＜0.05) expression level,but not with Ki-67 (r =0.084,P ＞ 0.05).Condusion The over-expression of CD90 is related with molecular subtypes of breast carcinoma,and its high expression suggests a poor prognosis.

Objective To explore the theoretical framework and method of community-based rehabilitation assessment for children with cerebral palsy based International Classification of Functioning, Disability and Health (ICF). Methods The system of assessment of community-based rehabilitation was developed based on the theoretical framework ICF, combined with multi-tools and self-compiled work scales.The system was used for 50 rural children with cerebral palsy after 1-year of community-based rehabilitation. Results and Conclusion The system of assessment is applicable for rural community-based rehabilitation of children with cerebral palsy, with satisfactory efficacy and compliance.

Objective:To understand the etiology and clinical characteristics of hospitalized severe community-acquired pneumonia(SCAP) in Changchun, and provide scientific basis for its etiology diagnosis and targeted treatment.Methods:The study subjects included 618 children with clinical diagnosis of SCAP who were hospitalized from January 2016 to December 2019.We collected pharyngeal swabs and alveolar lavage fluid from children.Virus isolation, bacterial culture, time-of-flight mass spectrometry, PCR/RT-PCR, colloidal gold method and Optochin test were used to detect the antigen, nucleic acid and protein profiles in the specimen.Results:There were more boys than girls in hospitalized children with SCAP.The peak age of onset was 7 to 12 months.Most cases occurred in winter and spring.The highest detection rate of SCAP virus was 56.15%(347/618); 73.49%(255/347) were positive for one virus, among which the top five were respiratory syncytial virus (27.8%), influenza A virus (23.9%), influenza B virus (16.1%), rhinovirus (12.2%) and metapneumovirus (10.2%). Two viruses were positive for 19.88%(69/347); three viruses were positive for 4.32%(15/347); four viruses were positive for 2.31%(8/347). Atypical microbial infections were 29.77%(184/618), of which Mycoplasma pneumoniae accounted for 95.65%(176/184). Bacterial infections were 17.31%(107/618), mainly Streptococcus pneumoniae(39.25%, 42/107) and Staphylococcus aureus(24.30%, 26/107). The mixed infection of multiple pathogens was 7.61%(47/618), among which the mixed infection rates of Mycoplasma pneumonia with Streptococcus pneumoniae, virus were 40.43% and 34.04%, respectively.High fever, faster breathing, and perioral cyanosis were risk factors for SCAP, with OR and 95% CI of 7.71 and 4.56-13.04, 2.43 and 2.02-2.93, 3.53 and 2.56-4.86, respectively.Viral co-infection occurred in 36.96%(34/92) of complications such as heart failure, toxic encephalopathy, and myocardial damage; Mycoplasma pneumoniae and other pathogens co-infected 35.29% of children with pleural effusion. Conclusion:The pathogens of SCAP in Changchun are mainly viruses notably, respiratory syncytial virus is the dominant pathogen, followed by Mycoplasma pneumoniae.The bacterial pathogen is mainly Streptococcus pneumoniae.High fever, faster breathing, and cyanosis around the mouth are risk factors for severe pneumonia.Multi-pathogen mixed infection is prone to serious complications.

Optical coherence elastography (OCE) is a novel technique developed in recent years to investigate the biomechanical properties of tissues, similar to optical coherence tomography angiography, a functional version of optical coherence tomography.OCE utilizes load excitation to detect the mechanical response of ocular tissues, facilitating quantitative analysis of stress-strain curves, Young's modulus, and other biomechanical indicators.It also generates two-dimensional/three-dimensional elastic maps of the tissues.With its noninvasive, high-resolution, real-time, rapid, and three-dimensional imaging capabilities, OCE provides both structural and mechanical information about ocular tissues, opening up new dimensions in ocular disease diagnosis and pathogenesis research.This article introduced the technical classification and research status of OCE, and highlighted its research progress in ophthalmology, including its applications in assisted refractive surgery design, keratoconus patient screening, assessment of corneal cross-linking surgery efficacy, cataract diagnosis and grading, measurement of retinal biomechanics, and research into myopia pathogenesis.The challenges and opportunities for clinical translation of OCE in ophthalmology were also discussed.

Objective To discuss the controversial role of breast milk in late-onset group B Streptococcus (GBS) infections.Methods This study reported a case of recurrent late-onset GBS sepsis with the suspicion of breast milk transmission in an extremely preterm infant born at 22+6 weeks who was treated at the University of Hong Kong-Shenzhen Hospital in September 2016.Literatures about late-onset GBS cases associated with contaminated breast milk were reviewed to investigate whether GBS could be transmitted through breast milk.Results (1) Case report:A breast-fed extremely preterm infant born at 22+6 gestational weeks suffered from GBS sepsis along with meningitis for the first time on 100 d.The mother was negative for rectovaginal GBS screening.Breast milk wasn't tested as no signs of mastitis were found.The neonate recovered from the first GBS sepsis after 14 days of antibiotic treatment,then returned to breastfeeding.On 126 d,GBS sepsis reoccurred in this baby.Fresh breast milk culture yielded GBS which was identical with the GBS strains isolated from the neonatal blood in antimicrobial susceptibility.After recovery from the second episode,the baby was partially breastfed again without further relapses of late-onset GBS sepsis.(2) Literature review:64 cases of late-onset GBS infections that transmitted via breast milk were retrieved from PubMed,while no Chinese cases had been reported.Clinical data of the 65 cases (including this case) were reviewed and the results revealed that contaminated breast milk was associated with late-onset GBS infections.The reported relapse rate of GBS infections transmitted via breast milk was 25％ for two episodes and 7％ for three episodes.Conclusions GBS contaminated breast milk could potentially cause late-onset GBS sepsis in infants and further studies are required to identify the underlying mechanisms.