OBJECTIVE To identify tortoiseshell glue and antler glue in Qichong zuogui granules， and determine the contents of 12 chemical components. METHODS Identification and content determination were performed by using liquid chromatography- tandem mass spectrometry （LC-MS/MS） method. The identification was performed on Hypersil GOLD column with a mobile phase consisted of acetonitrile-0.1% formic acid solution （gradient elution）； the electrospray ion source was used to scan in the positive ion multi-reaction detection mode. The mass charge ratio （m/z） 631.3→546.4， 631.3→921.4 was the detection ion pair for tortoiseshell glue， and the m/z 765.4→554.0， 765.4→733.0 was the detection ion pair for antler glue. The determination method for 12 chemical components was as follows： Accucore C18 column， methanol-0.1% formic acid as mobile phase （gradient elution）； scanning range of positive and negative ions was m/z 100→1 000 with the electric spray ion source and single ion detection scanning mode. RESULTS Average retention times of the molecular ion peaks for characteristic peptide segments of tortoiseshell glue and antler glue were 6.28 and 6.77 min， respectively； the linear relationship of 12 chemical components was good within their respective concentration ranges， such as astragaloside Ⅳ， calycosin-7-O-β-D-glucoside， calycosin， chlorogenic acid， ferulic acid， betaine， amygdalin， rutin， hydroxysafflor yellow A， hyperoside， loganin， cyasterone （r＞0.999）； RSDs for precision， stability （24 h） and reproducibility tests were all less than 5%. The average sample recovery rates ranged from 98.04% to 101.08%. The average contents of 12 components were 1.83， 25.73， 13.76，56.71， 23.80， 49.82， 807.49， 15.01， 317.02， 60.21， 202.71 and 17.70 μg/g， respectively. CONCLUSIONS In this study， tortoiseshell glue and antler glue in Qixiong zuogui granules are identified， and the contents of 12 chemical components therein are determined. This provides a reference for the quality control of this granule.

The shaoyang meridian is an important pivot between the internal organs and meridians system， with the functions of regulating qi and blood， balancing yin and yang， and coordinating the ascending and descending movement of qi. Dysfunction of the shaoyang pivot can lead to spleen and kidney deficiency， impaired liver and gallbladder qi regulation， and stagnation of qi and blood. It is believed that the onset and progression of Crohn's disease are closely related to shaoyang pivot dysfunction， with the core pathogenesis characterized by shaoyang disharmony， spleen deficiency， dampness retention， and blood stasis. Based on this understanding， the treatment principle centers on harmonizing the shaoyang pivot， supplemented by methods such as warming and nourishing the spleen and stomach， tonifying shaoyang， and soothing the liver and benefiting the gallbladder. Acupuncture is employed to target key acupoints along the shaoyang meridian to restore its regulatory functions， improve spleen and stomach transformation and transportation， facilitate liver and gallbladder qi flow， and promote the circulation of qi and blood. This provides a practical therapeutic approach for acupuncture-based treatment of Crohn's disease.

Objective To analyze the diagnostic process and clinical characteristics of autoimmune gastritis(AIG)in order to improve the awareness and diagnostic proficiency of this disease.Methods A retrospective cohort study was conducted on 114 patients diagnosed with AIG in Army Medical Center of PLA between January 2021 and June 2024.Comprehensive statistical analysis was performed on clinical data,including demographic characteristics(age,sex),clinical symptoms,comorbidities,diagnostic process,Helicobacter pylori(H.pylori)infection and treatment history,laboratory indicators[results of routine blood test,anemia-related indices,thyroid function,anti-parietal cell antibody(APCA),intrinsic factor antibody(IFA)],and gastrointestinal endoscopic findings(frequency and endoscopic features).Results Among the 114 patients,males accounted for 28.1%(32/114)and females for 71.9%(82/114),and they were at a mean age of 56.3±8.4 years.Predominant symptoms included epigastric/upper abdominal pain(47.4%,54/114)and postprandial fullness(43.0%,49/114),while 24.6%(28/114)reported acid reflux or heartburn.Diagnostic delay occurred in 76.4%(87/114)of patients,with a median delay duration of 11.5 months.Primary diagnostic clues were endoscopic reverse gradient atrophy(significantly more severe mucosal atrophy in the gastric corpus/fundus versus antrum;53.5%,61/114)and repeated H.pylori eradication failure(≥2 attempts;22.8%,26/114).Positivity rate of thyroid peroxidase antibody(TPOAb)and thyroglobulin antibody(TgAb)was 56.9%(33/58)and 36.2%(21/58),respectively.APCA positive rate was 98.8%(81/82),IFA positive rate was 34.1%(28/82),and dual-antibody rate was 32.9%(27/82).Anemia was present in 25.7%(26/101)of the patients.Gastric neuroendocrine tumors(NET)were found in 12.2%(14/114),intraepithelial neoplasia in 5.3%(6/114),and gastric adenocarcinoma in 0.9%(1/114).Among colonoscopy-examined patients,tubular adenomas occurred in 25.0%(13/52)and colorectal malignancies in 3.4%(2/58).There were 18.4%(21/114)patients having gallbladder-related diseases,7.9%(9/114)having diabetes mellitus,and 1.8%(2/114)of subacute combined degeneration of the spinal cord.Conclusion AIG is frequently associated with diagnostic delay.The reverse pattern of atrophy on endoscopy serves as a critical diagnostic clue,necessitating enhanced recognition in endoscopists.Patients with recurrent H.pylori eradication failure(≥2 attempts)should be evaluated for AIG.

Microalgae possess high photosynthetic efficiency, robust adaptability, and substantial biomass, serving as excellent biological resources for large-scale cultivation. Malic enzyme (ME), a ubiquitous metabolic enzyme in living organisms, catalyzes the decarboxylation of malate to produce pyruvate, CO₂, and NAD(P)H, playing a role in multiple metabolic pathways including energy metabolism, photosynthesis, respiration, and biosynthesis. In this study, we identified the Scenedesmus quadricauda malic enzyme gene (SqME) and its biological functions, aiming to provide excellent target genes for the genetic improvement of higher plants. Based on the RNA-seq data from S. quadricauda under the biofilm cultivation mode with high CO₂ and light energy transfer efficiency and small water use, a highly expressed gene (SqME) functionally annotated as ME was cloned. The physicochemical properties of the SqME-encoded protein were systematically analyzed by bioinformatics tools. The subcellular localization of SqME was determined via transient transformation in Nicotiana benthamiana leaves. The biological functions of SqME were identified via genetic transformation in Nicotiana tabacum, and the potential of SqME in the genetic improvement of higher plants was evaluated. The ORF of SqME was 1 770 bp, encoding 590 amino acid residues, and the encoded protein was located in chloroplasts. SqME was a NADP-ME, with the typical structural characteristics of ME. The ME activity in the transgenic N. tabacum plant was 1.8 folds of that in the wild-type control. Heterologous expression of SqME increased the content of chlorophyll a, chlorophyll b, and total chlorophyll by 20.9%, 26.9%, and 25.2%, respectively, compared with the control. The transgenic tobacco leaves showed an increase of 54.0% in the fluorescence parameter NPQ and a decrease of 30.1% in Fo compared with the control. Moreover, the biomass, total lipids, and soluble sugars in the transgenic tobacco leaves enhanced by 20.5%, 25.7%, and 9.5%, respectively. On the contrary, the starch and protein content in the transgenic tobacco leaves decreased by 22.4% and 12.2%, respectively. Collectively, the SqME-encoded protein exhibited a strong enzymatic activity. Heterologous expressing of SqME could significantly enhance photosynthetic protection, photosynthesis, and biomass accumulation in the host. Additionally, SqME can facilitate carbon metabolism remodeling in the host, driving more carbon flux towards lipid synthesis. Therefore, SqME can be applied in the genetic improvement of higher plants for enhancing photosynthetic carbon fixation and lipid accumulation. These findings provide scientific references for mining of functional genes from S. quadricauda and application of these genes in the genetic engineering of higher plants.
Nicotiana/genetics* ; Photosynthesis/physiology* ; Malate Dehydrogenase/biosynthesis* ; Plant Leaves/genetics* ; Scenedesmus/enzymology* ; Carbon Cycle/genetics* ; Lipid Metabolism/genetics* ; Plants, Genetically Modified/metabolism*

Objective To compare the clinical efficacy of the femoral neck system(FNS)and cannulated compression screw(CCS)in the treatment of Pauwels type Ⅲ femoral neck fractures in young and middle-aged patients.Methods We retrospectively studied 103 clinical cases of young and middle-aged patients with Pauwels type Ⅲ femoral neck fractures who were treated with internal fixation surgery between January 2019 and August 2022.According to different surgical methods,they were divided into FNS group(54 cases)and CCS group(49 cases).The intraoperative bleeding volume,operation time,quality of fracture reduction(Garden alignment index),bone healing time,postoperative weight-bearing time,postoperative complications,shortening length of femoral neck,change of femoral neck-shaft angle(difference between immediately after operation and at the last follow-up),and Harris hip score were compared between the two groups.Results Compared to the CCS group,the FNS group had significantly shorter operation time[(46.7±12.3)min vs.(69.7±14.1)min,t=-8.840,P=0.000],reduced postoperative weight-bearing time[(11.5±2.7)weeks vs.(15.7±3.2)weeks,t=-7.124,P=0.000],shorter fracture healing time[(3.7±0.8)months vs.(4.3±0.9)months,t=-3.625,P=0.001],and significantly lower incidence of complications[1.8％(1/54)vs.14.3％(7/49),x2=3.944,P=0.047].The FNS group also demonstrated significantly higher Harris hip scores at 3 months[(84.5±3.9)points vs.(82.7±4.4)points,t=2.212,P=0.029],6 months[(91.4±4.4)points vs.(89.7±4.0)points,t=2.119,P=0.037],and 1 year[(96.0±2.8)points vs.(94.8±3.1)points,t=2.029,P=0.045]postoperatively compared to the CCS group.At the last follow-up,the FNS group showed significantly shorter femoral neck shortening[(4.6±2.8)mm vs.(5.9±3.3)mm,t=2.165,P=0.033]compared to the CCS group.Conclusions Compared to CCS,FNS shows better efficacy in the internal fixation of Pauwels type Ⅲ femoral neck fractures with a shorter bone healing time.With the application of FNS,the rehabilitation of the hip joint is promoted,and the hip joint function is effectively improved,as well as the incidence of postoperative complications is reduced.

This study was designed to investigate the effect of hypoxia on preeclampsia(PE)by modulating the Src/Siglec-6/SHP2 signaling pathway in the cytoplasm of trophoblast cells.Mouse model of PE was established in normal control and Siglec-6 knockdown mice by L-NAME administration,with aims of studying the changes in vascular diameter of spiral arteries in vivo and examining the expression levels of Siglec-6,p-Src,p-Shp2 and p-ERK1/2 proteins in mouse uterine vascular tissues.While,the effect of Src/Siglec-6/SHP2 on the invasive proliferation of trophoblast cells was explored by culturing human chorionic trophoblast cells HTR-8/SVneo with hypoxia in vitro.In vivo experimental assays showed that the diameter of spiral arteries was reduced in the Siglec-6 knockdown group of mice,and the expression levels of Siglec-6,p-Src,p-SHP2 and p-ERK1/2 proteins were significantly reduced.In vitro hypoxic HTR-8/SVneo cell model results revealed that Siglec-6 overexpression could promote trophoblast cell invasion and proliferation by regulating p-Src,p-SHP2,p-ERK1/2,MMP2,P53 and P21.While,suppression of Src and SHP2 eliminated Siglec-6 overexpression-mediated Siglec-6,p-Src,p-SHP2 and p-ERK1/2 expression,and inhibited the ability of Siglec-6 overexpression to mediate trophoblast invasion and proliferation.Taken together,Siglec-6 plays an important role in preeclampsia,and can alleviate preeclampsia by promoting trophoblast invasion and proliferation through the Src/SHP2 signalling pathway.

Objective:To investigate the role of RNA m6A methylation in mediating cerebellar dysplasia through analyzing the phenotypes of the mouse cerebella and the expression of several key m6A regulators upon hypobaric hypoxia treatment.Methods:Five-day old C57/BL6 mice were exposed to hypobaric hypoxia for 9 days. The status of mouse cerebellar development was analyzed by comparing the body weights, brain weights and histological features. Immunostaining of cell-type-specific markers was performed to analyze the cerebellar morphology. Real-time PCR, Western blot and immunohistochemical staining were performed to detect the expression of key m6A regulators in the mouse cerebella.Results:Compared with the control, the body weights, brain weights and cerebellar volumes of hypobaric hypoxic mice were significantly reduced ( P<0.01). The expression of specific markers in different cells, including NeuN (mature neuron), Calbindin-D28K (Purkinje cell) and GFAP (astrocyte), was decreased in hypobaric hypoxic mouse cerebella ( P<0.01), accompanied with disorganized cellular structure. The expression of methyltransferase METTL3 was significantly down-regulated in the cerebella of hypobaric hypoxic mice ( P<0.05). Conclusions:Hypobaric hypoxia stimulation causes mouse cerebellar dysplasia, with structural abnormalities in mature granular neurons, Purkinje cells and astrocytes. Expression of METTL3 is decreased in hypobaric hypoxic mice cerebellum compared with that of normobaric normoxic mice, suggesting that its mediated RNA m6A methylation may play an important role in hypobaric hypoxia-induced mouse cerebellar dysplasia.

Objective To explore the relationship between serum levels of decorin,soluble Axl(sAxl),cy-tokine-like protein 1(CYTL1)and Kellgren-Lawrence(K-L)grading in patients with knee osteoarthritis.Methods From August 2021 to May 2023,328 patients with knee osteoarthritis admitted to the hospital were selected as the research group,and 328 healthy controls during the same period were selected as the control group.Serum Decorin,sAxl and CYTL1 levels were detected by enzyme-linked immunosorbent assay.Western Ontario and McMaster University Osteoarthritis Questionnaire(WOMAC)was used to assess patients'clini-cal symptoms.Spearman method was used to analyze the correlation between serum Decorin,sAxl,CYTL1 and K-L grading,as well as WOMAC score.Logistic regression was used to analyze the influencing factors of knee osteoarthritis.ROC curve was drawn to analyze the diagnostic value of serum Decorin,sAxl and CYTL1 in grade Ⅰ to Ⅱ and Ⅲ to Ⅳ of knee osteoarthritis.Results Serum Decorin and sAxl levels in the study group were significantly higher than those in the control group(P＜0.05),and CYTL1 levels were signifi-cantly lower than those in the control group,with statistical significance(P＜0.05).The levels of serum Decorin,sAxl and WOMAC scores in K-L grades Ⅰ,Ⅱ,Ⅲ and Ⅳ were increased successively(P＜0.05),while the levels of CYTL1 were decreased successively(P＜0.05).Spearman correlation analysis showed that serum Decorin and sAxl were positively correlated with K-L grading and WOMAC score(P＜0.05),and CYTL1 was negatively correlated with K-L grading and WOMAC score(P＜0.05).High level of Decorin,sAxl and low level of CYTL1 were risk factors for knee osteoarthritis(P＜O.05).The levels of serum Decor-in,sAxl and CYTL1 had certain diagnostic value for grade Ⅰ to Ⅱ and grade Ⅲ to Ⅳ of knee osteoarthritis.Conclusion Serum Decorin,sAxl and CYTL1 levels are closely related to K-L grade of knee osteoarthritis,and can be used for auxiliary diagnosis of grade Ⅰ to Ⅱ and grade Ⅲ to Ⅳ of knee osteoarthritis.

Objective To explore the application value of telmisartan combined with calcium dobesilate in patients with non-dipper hypertension complicated with type 2 diabetes mellitus(T2DM).Methods A total of 260 patients with non-dipper hypertension complicated with T2DM in the endocrinology department of our hospital were selected in this study from January 2021 to December 2022.All the patients were randomly divided into telmisartan group(Tel,n=110)and telmisartan+calcium dobesilate group(Tel+Cal-dob,n=150).The blood pressure level,blood pressure rhythm changes,brachial flow mediated dilatation(FMD),carotid radial pulse wave velocity(crPWV),vasomotor factors[nitric oxide(NO),endothelin-1(ET-1),vascular endothelial growth factor(VEGF)]and the incidence of adverse reactions were compared between the two groups.Results There was no significant difference in general data and biochemical indexes between the two groups(P>0.05).After 3,6 and 12 months of treatment,the FMD and NO were higher,while the dSBP,dDBP,24 hSBP,24 hDBP,nSBP,nDBP,crPWV,ET-1 and VEGF were lower than before treatment in both groups(P<0.05).After 3,6 and 12 months of treatment,the FMD and NO were higher,while dSBP,dDBP,24 hSBP,24 hDBP,nSBP,nDBP,crPWV,ET-1 and VEGF were lower in Tel+Cal-dob group than in Tel group(P<0.05).After 3,6 and 12 months of treatment,the conversion rates of dipper blood pressure were higher in Tel+Cal-dob groupthan in Tel group(P<0.05).There was no significant difference in the incidence of adverse effects between the two groups(P>0.05).Conclusion Telmisartan combined with calcium dobesilate is effective in the treatment of patients with non-dipper hypertension complicated with T2DM.

Traumatic supraorbital fissure syndrome (TSOFS) is a symptom complex caused by nerve entrapment in the supraorbital fissure after skull base trauma. If the compressed cranial nerve in the supraorbital fissure is not decompressed surgically, ptosis, diplopia and eye movement disorder may exist for a long time and seriously affect the patients′ quality of life. Since its overall incidence is not high, it is not familiarized with the majority of neurosurgeons and some TSOFS may be complicated with skull base vascular injury. If the supraorbital fissure surgery is performed without treatment of vascular injury, it may cause massive hemorrhage, and disability and even life-threatening in severe cases. At present, there is no consensus or guideline on the diagnosis and treatment of TSOFS that can be referred to both domestically and internationally. To improve the understanding of TSOFS among clinical physicians and establish standardized diagnosis and treatment plans, the Skull Base Trauma Group of the Neurorepair Professional Committee of the Chinese Medical Doctor Association, Neurotrauma Group of the Neurosurgery Branch of the Chinese Medical Association, Neurotrauma Group of the Traumatology Branch of the Chinese Medical Association, and Editorial Committee of Chinese Journal of Trauma organized relevant experts to formulate Chinese expert consensus on the diagnosis and treatment of traumatic supraorbital fissure syndrome ( version 2024) based on evidence of evidence-based medicine and clinical experience of diagnosis and treatment. This consensus puts forward 12 recommendations on the diagnosis, classification, treatment, efficacy evaluation and follow-up of TSOFS, aiming to provide references for neurosurgeons from hospitals of all levels to standardize the diagnosis and treatment of TSOFS.