Objective To evaluate the value of an optimized three-dimensional inversion-recovery with real reconstruction (3D-real IR) sequence with a longer repetition time (TR, 16 000 ms) based on modulated flip angle technique in refocused imaging with extended echo train (MATRIX) in the endolymphatic hydrops (EH) imaging after intratympanic gadolinium (Gd) administration, and to compare it with a conventional 3D-real IR based on the turbo spin echo (TSE) sequence. Methods From July 2021 to November 2022, twenty-seven patients received both the conventional and optimized 3D-real IR sequences after bilateral intratympanic Gd administration. Images of the two sequences were qualitativly evaluated and compared. Contrast-to-noise ratio (CNR), signal-to-noise ratio (SNR), and area ratio of endolymph against the total lymphatic space from the two sequences were measured and compared. Results 14(25.9%) ears with insufficient contrast for the EH diagnosis on the conventional sequence were clearly displayed on the optimized sequence. Image score, CNR and SNR of the optimized sequence were significantly higher than those of the conventional sequence (P ＜ 0.001). The scanning time of two sequences was similar. The area ratio of endolymph against the total lymphatic space in the cochlear was significantly higher on the conventional 3D-real IR than that on the optimized 3D-real IR (P ＜ 0.001); there was no statistical difference in the vestibule between the two sequences. Conclusions Compared with conventional sequence, optimized 3D-real IR sequence with a longer TR may be better for evaluation of EH after intratympanic Gd administration.

Objective To investigate the value of artificial intelligence-assisted compressed sensing (ACS) technology for intravenous gadolinium contrast-enhanced magnetic resonance imaging of the inner ear using three-dimensional fluid-attenuated inversion recovery (3D-FLAIR) sequence. Methods The patients received gadolinium contrast-enhanced magnetic resonance imaging using ACS and united compressed sensing (uCS) 3D-FLAIR at Zhongshan Hospital, Fudan University from January to November 2024 were prospectively enrolled. The repetition time was 16 000 ms, and acquisition time was 6 min 40 s and 10 min 24 s in ACS 3D-FLAIR and uCS 3D-FLAIR, respectively. The images on the two sequences were evaluated independently by two radiologists. The image quality of the two sequences was subjectively evaluated and compared. The signal-to-noise ratio (SNR) and contrast-to-noise ratio (CNR) were compared between the two sequences. The grading consistencies using two sequences and between the two doctors were analyzed. Results There was no statistically difference in subjective score of image quality between the two sequences. SNR and CNR of the ACS 3D-FLAIR sequence were significantly higher than those of the uCS 3D-FLAIR sequence (P＜0.001). The kappa values of grades of cochlear and vestibular endolymphatic hydrops were 0.942 and 0.888 using two sequences (P＜0.001). The kappa values of grades of cochlear and vestibular endolymphatic hydrops using the ACS 3D-FLAIR sequence between the two doctors were 0.784 and 0.831, respectively (P＜0.001); the kappa values of grades of cochlear and vestibular endolymphatic hydrops using uCS 3D-FLAIR sequence between the two doctors were 0.725 and 0.756, respectively (P＜0.001). Conclusions ACS 3D-FLAIR could provide higher SNR and CNR than uCS 3D-FLAIR, and is more suitable for intravenous gadolinium contrast-enhanced magnetic resonance imaging of the inner ear; the endolymphatic hydrops grades using ACS 3D-FLAIR is similar to use uCS 3D-FLAIR.

The advanced platelet-rich fibrin(A-PRF)and concentrated growth factor(CGF)are platelet concentrates(PCs)obtained through the collection of venous blood from the patient and using different centrifugation procedures.Both are rich in growth factors,and the internal fibrin structure within them serves as a natural three-dimensional scaffold for the release of growth factors.They possess characteristics such as low cost,high safety and superior regenerative potential.Currently,they have gained wide-spread attention in the field of regeneration and repair of soft and hard tissues in oral implantation.This review provides the progress of A-PRF and CGF research,focusing on their preparation methods,application methods,potential regeneration mechanisms and a comparison of components and scaffold structures promoting alveolar bone defect repair between A-PRF and CGF.

The advanced platelet-rich fibrin(A-PRF)and concentrated growth factor(CGF)are platelet concentrates(PCs)obtained through the collection of venous blood from the patient and using different centrifugation procedures.Both are rich in growth factors,and the internal fibrin structure within them serves as a natural three-dimensional scaffold for the release of growth factors.They possess characteristics such as low cost,high safety and superior regenerative potential.Currently,they have gained wide-spread attention in the field of regeneration and repair of soft and hard tissues in oral implantation.This review provides the progress of A-PRF and CGF research,focusing on their preparation methods,application methods,potential regeneration mechanisms and a comparison of components and scaffold structures promoting alveolar bone defect repair between A-PRF and CGF.

A close relationship between fatty acid metabolism and cancer development is well-established.The hydroxyacyl-coenzyme a dehydrogenase(HADH),a key enzyme in fatty acid beta-oxidation,has recently been identified as an anti-oncogenic factor in various cancers and an oncogenic factor in conditions like acute myeloid leukemia.In cancer cells,HADH not only directly catalyzes fatty acid beta-oxidation but also indirectly influences multiple signaling pathways such as PPAR,TNF-α,JAK-STAT3,PI3K/Akt,IFN-γ,MAPK,and non-canonical Wnt signaling pathways,affecting cancer cell proliferation and migration.HADH shows promise as a potential tumor biomarker for diagnosis,treatment,and prognosis in different cancer types,holding significant clinical value.

Objective To observe clinical efficacy and safety of less invasive surfactant administration(LISA)in treatment of respiratory distress syndrome(RDS)in extremely premature infants.Methods A total of 65 cases premature infants diagnosed with RDS admitted to neonatal intensive care unit of Xiaogan Central Hospital from January 2021 to December 2023,with gestational age of 28+0～31+6 weeks.They were divided into LISA group(n=33)and intubation administration of surfactant extubation(InSurE)group(n=32)using a random number table method.The incidence of adverse events,blood gas analysis before and after administration,pulse oxygen saturation(SpO2),changes in blood pressure,clinical efficacy,complications,and outcomes were compared between two groups.Results There was no statistically significant difference in the incidence of drug reflux,bradycardia,apnea,or SpO2＜80％between two groups of operations(P＞0.05).During the operation,SpO2 of LISA group was lower than that of InSurE group,and blood pressure monitoring at the 2nd and 4th minutes were lower than those of InSurE group at the corresponding time points,with statistically significant differences(P＜0.05).After 1 hour of treatment,arterial partial pressure of oxygen in LISA group was higher than that in InSurE group,and arterial partial pressure of carbon dioxide was lower than that in InSurE group,with statistically significant differences(P＜0.05).The mechanical ventilation ratio and oxygen therapy time within 72 hours in LISA group were lower than those in InSurE group,and the differences were statistically significant(P＜0.05).There was no statistically significant difference in reuse rate of pulmonary surfactant(PS),and hospitalization time between two groups(P＞0.05).The incidence of grade 3-4 periventricular intraventricular hemorrhage,P-IVH in LISA group was lower than that in InSurE group,and the difference was statistically significant(P＜0.05).There was no statistically significant difference in the incidence of other complications between two groups(P＞0.05).Conclusion Less invasive PS treatment for extremely premature infants with RDS can reduce the incidence of mechanical ventilation,shorten oxygen therapy time,and reduce the occurrence of severe P-IVH.

ObjectiveSerum metabolomics of acute lung injury（ALI） in rats was conducted using ultra-performance liquid chromatography-quadrupole-time-of-flight mass spectrometry（UPLC-Q-TOF-MS） to explore the similarities and differences in the mechanism of Qingqiao（harvested when the fruits of Forsythiae Fructus were initially ripe and still green in color） and Laoqiao（harvested when the fruits of Forsythiae Fructus were ripe） in the treatment of ALI. MethodA total of 24 SD male rats were acclimatized and fed for 1 week， 6 of them were randomly selected for the blank group and 18 for the experimental group. The ALI model was induced in the experimental group by tracheal intubation with lipopolysaccharide（LPS）. After successfully constructing the ALI model， these rats was randomly divided into model group， Qingqiao group and Laoqiao group， with 6 rats in each group. The Qingqiao and Laoqiao groups were administered orally once a day at a dose of 1.5 g·kg^-1， while the blank and model groups received an equivalent volume of saline for 3 consecutive days. The pathological conditions of rat lung tissues were comprehensively assessed by hematoxylin-eosin（HE） staining， wet-to-dry mass ratio（W/D） of lung tissues， and protein concentration in rat bronchoalveolar lavage fluid（BALF）. The levels of interleukin（IL）-6， IL-1β and tumor necrosis factor（TNF）-α in BALF were quantified using enzyme-linked immunosorbent assay（ELISA）. UPLC-Q-TOF-MS was used to identify and analyze the chemical compositions of Qingqiao and Laoqiao， and serum metabolomics of rats in each group was analyzed， combined with multivariate statistical analysis with variable importance in the projection（VIP） value>1， P<0.05 from t-test， and fold change（FC）≥1.5 or FC≤0.5 to screen the differential metabolites Qingqiao and Laoqiao for the treatment of ALI. The Kyoto Encyclopedia of Genes and Genomes（KEGG） database was used in combination with MetaboAnalyst for the metabolic pathway analysis of the screened differential metabolites. ResultCompared with the blank group， rats in the model group exhibited enlarged alveolar lumen， ruptured alveoli， interstitial hemorrhage， bronchial exudation of a large number of neutrophils and erythrocytes， and a significant increase in the protein concentration in the BALF and the W/D value of the lung tissues（P<0.01）. In contrast， compared with the model group， rats in the Qingqiao group and the Laoqiao group showed reduced bronchial hemorrhage in the lungs， and the protein concentration in the BALF and the W/D value of the lung tissues were significantly decreased（P<0.01）， the lung injury was significantly alleviated， but more obvious in the Qingqiao group. Compared with the blank group， the expression levels of IL-6， IL-1β and TNF-α in the BALF of the model group were significantly higher（P<0.01）. Additionally， compared with the model group， the expression levels of IL-6， IL-1β and TNF-α in the Qingqiao and Laoqiao groups were significantly lower（P<0.01）. The chemical composition analysis of Qingqiao and Laoqiao revealed that 63 components were detected in Qingqiao and 55 components were detected in Laoqiao， with 47 common components， 16 components unique to Qingqiao and 8 components unique to Laoqiao. Characterizing the differences in serum metabolomics in rats， 19 and 12 metabolites were called back by Qingqiao and Laoqiao， respectively. The metabolic pathway enrichment analysis showed that Qingqiao exerted its therapeutic effects by affecting 6 key metabolic pathways， including linoleic acid metabolism， phenylalanine metabolism， phenylalanine， tyrosine and tryptophan biosynthesis， glycerophospholipid metabolism， α-linolenic acid metabolism， and arachidonic acid metabolism， and Laoqiao exerted therapeutic effects by affecting 6 key metabolic pathways， including linoleic acid metabolism， arachidonic acid metabolism， sphingolipid metabolism， phenylalanine metabolism， ascorbate and aldarate metabolism， and glycerophospholipid metabolism. ConclusionQingqiao and Laoqiao have therapeutic effects on ALI， and Qingqiao is more effective. Both of them can play a therapeutic role in ALI by regulating amino acid metabolism and lipid metabolism， but the metabolic pathways affected by them are different.

Objective To observe clinical efficacy and safety of less invasive surfactant administration(LISA)in treatment of respiratory distress syndrome(RDS)in extremely premature infants.Methods A total of 65 cases premature infants diagnosed with RDS admitted to neonatal intensive care unit of Xiaogan Central Hospital from January 2021 to December 2023,with gestational age of 28+0～31+6 weeks.They were divided into LISA group(n=33)and intubation administration of surfactant extubation(InSurE)group(n=32)using a random number table method.The incidence of adverse events,blood gas analysis before and after administration,pulse oxygen saturation(SpO2),changes in blood pressure,clinical efficacy,complications,and outcomes were compared between two groups.Results There was no statistically significant difference in the incidence of drug reflux,bradycardia,apnea,or SpO2＜80％between two groups of operations(P＞0.05).During the operation,SpO2 of LISA group was lower than that of InSurE group,and blood pressure monitoring at the 2nd and 4th minutes were lower than those of InSurE group at the corresponding time points,with statistically significant differences(P＜0.05).After 1 hour of treatment,arterial partial pressure of oxygen in LISA group was higher than that in InSurE group,and arterial partial pressure of carbon dioxide was lower than that in InSurE group,with statistically significant differences(P＜0.05).The mechanical ventilation ratio and oxygen therapy time within 72 hours in LISA group were lower than those in InSurE group,and the differences were statistically significant(P＜0.05).There was no statistically significant difference in reuse rate of pulmonary surfactant(PS),and hospitalization time between two groups(P＞0.05).The incidence of grade 3-4 periventricular intraventricular hemorrhage,P-IVH in LISA group was lower than that in InSurE group,and the difference was statistically significant(P＜0.05).There was no statistically significant difference in the incidence of other complications between two groups(P＞0.05).Conclusion Less invasive PS treatment for extremely premature infants with RDS can reduce the incidence of mechanical ventilation,shorten oxygen therapy time,and reduce the occurrence of severe P-IVH.

OBJECTIVE To study on the identification of traditional Chinese medicine of Macleaya cordata(M. cordata) and its similar varieties. METHODS By consulting the ancient herbal books and modern literature, this paper systematically combs and studies the M. cordata. The morphological identification, microscopic identification, physiochemical identification, molecular identification were used to identify M. cordata and its similar varieties. RESULTS Obtained M. cordata herbal textual research data. There were some differences between M. cordata and Macleaya microcarpa(M. microcarpa) and other similar varieties in traits, microscopic, physicochemical and molecular characteristics. Molecular identification results showed that the length of the rbcL gene of M. cordata were 600 bp to 603 bp, with the average GC content ranging from 43.95% to 44.28%. There were significant differences in the variation sites between M. cordata and other similar varieties, and the variation sites with M. microcarpa were the least. The interspecific genetic distance between M. cordata and its similar varieties was greater than its maximum intraspecific genetic distance. NJ analysis results of rbcL could effectively distinguish M. cordata from other similar varieties accurately and quickly. There were significant differences in the secondary structure of rbcL between M. cordata and its similar varieties. CONCLUSION The traditional Chinese medicine identification methods of M. cordata, M. microcarpa and other similar varieties are constructed, which provides experimental basis for the variety identification of M. cordata and the subsequent development of traditional Chinese medicine resources.

Objective To construct a nomogram prediction model for the risk of mild cognitive impair-ment (MCI) in elderly people aged ≥ 60-year-old.Methods A total of 502 elderly permanent residents in Guangxi were selected as the research subjects by the multi-stage stratified random sampling method,and the general situation questionnaire and the Beijing edition of MoCA-BJ scale were used to investigate the elderly people,and their anthropometric indicators were collected.The minimum absolute shrinkage rate and selection operator (LASSO) regression were used to screen the characteristic variables.The MCI risk nomogram pre-diction model was constructed.The receiver operating characteristic (ROC) curve and calibration curve were adopted to conduct the fitting effect test on the prediction model.Results Among the 502 elderly people,244 cases (46.04％) had the normal cognition and 258 cases (48.68％) had MCI.The logistic regression analysis showed that the age,education background,month income,children support,calf circumference,BMI and body fat index were the influencing factors of MCI in the elderly people,and the nomogram prediction model of the MCI risk in the elderly people was constructed by these seven variables.The area under the ROC curve (AUC) of the model was 0.790 (95％CI:0.750-0.829),the sensitivity was 0.64,the specificity was 0.62,the C-index index was 0.790,and the model fitting x2=8.111,P=0.454,the predictive value was basically consistent with the actual value.Conclusion The nomogram prediction model of MCI risk in the elderly peo-ple is successfully constructed with good predictive effect.