[Objective] To analyze the prevalence of human T-lymphocyte leukemia virus (HTLV) among blood donors in Guangzhou from 2016 to 2021, and provide a basis for blood collection and supply management in this region. [Methods] A total of 2 116 951 voluntary blood donors were screened for anti-HTLV by enzyme-linked immunosorbent assay (ELISA) from March 2016 to December 2021 in Guangzhou, and the reactive cases were further confirmed by Western blotting (WB). Qualitative data were analyzed by χ2 with spss19 software. The trend of the total positive rate of HTLV confirmation test by WB from 2016 to 2021 was analyzed with the Joinpoint software, and the annual percent change (APC) was used to determine whether the trend changes were statistically significant. [Results] From March 2016 to December 2021, the total positive rate for anti-HTLV by ELISA among voluntary blood donors in Guangzhou was 0.019 7% (416/ 2116 951), and the WB confirmed positive rate was 0.001 1% (23/2 116 951). The total positive rate of HTLV among individual voluntary blood donors in the six main districts (0.002 12%, 19/895 301) was higher than that among group voluntary blood donors (0.000 32%, 3/951 947) (P<0.05). There was no significant difference in the total positive rate of HTLV confirmation between the six main districts (0.001 19%) and the three non-main districts (0.000 37%) (P>0.05). The trend of the total positive rate of HTLV infection in the six main districts and the Guangzhou area(including the six main districts and three non-main districts) showed no significant increase or decrease. [Conclusion] The prevalence of HTLV among blood donors in Guangzhou remains at a low level.

Objective To investigate the mechanism of glycogen synthase kinase-3β（GSK-3β） participating in stroke-induced inflammatory brain injury through endoplasmic reticulum-mitochondria coupling， and to provide a theoretical reference and potential targets for precise treatment. Methods A rat model of middle cerebral artery occlusion was established， and the rats were divided into sham-operation group， model group， and GSK-3β inhibitor（TDZD-8） intervention group. Neurological function score was used to evaluate the degree of brain injury； TTC staining was used to evaluate cerebral infarct area； electron microscopy was used to observe mitochondrial ultrastructure； mitochondrial calcium concentration was measured； ELISA was used to measure the levels of inflammatory factors[tumor necrosis factor-α（TNF-α）and interleukin-1β（IL-1β）]， and Western blot was used to measure the expression levels of related proteins. Results Compared with the sham-operation group， the model group had significant neurological function impairment， an increase in cerebral infarct area， and significant increases in the expression levels of inflammatory factors and GSK-3β，with enhanced endoplasmic reticulum-mitochondria coupling and mitochondrial calcium overload. TDZD-8 significantly improved the above indicators and reduced the levels of inflammatory factors and cerebral infarct area. Conclusion Abnormal activation of GSK-3β damages brain tissue by regulating endoplasmic reticulum-mitochondria coupling and promotes mitochondrial calcium overload and inflammatory response. Inhibiting GSK-3β activity can effectively improve stroke-induced inflammatory brain injury， which provides a new pathway and a molecular target for developing precise treatment strategies.
Stroke

Objective:To evaluate the feasibility, safety and effects of tumor resection in the anterior space of the styloid process via transoral endoscopic medial parapterygomandibular ligament approach. Methods:This retrospective study included 24 patients who were diagnosed with tumors in the anterior space of the styloid process and treated with the transoral endoscopic medial parapterygomandibular ligament approach. Twenty-four patients who underwent surgery by traditional approach were selected on a 1∶1 ratio as control group. We compared the en bloc resection rate, the operation time, amount of blood loss, the postoperative pain VAS score, recurrence rate, length of hospital stay, complication rate between the two groups. Results:Among the 24 patients, pleomorphic adenoma was confirmed in 18 cases （75.0%）, basal cell adenoma in 2 cases （8.3%）, and neurilemmoma in 4 cases （16.7%）. In the transoral endoscopic group, the en bloc resection rate was 91.7%, the maximum tumor diameter was （42.2±12.2） mm, the operative time was （117.9±29.8）min, the blood loss was （36.7±18.7） mL, the postoperative pain VAS score （1.5±0.7）, no recurrence was observed, length of hospital stay was （10.8±2.9） d. Wound dehiscence occurred in one case in the transoral endoscopic group, and no other postoperative complication was observed. There were significant differences in the operation time, blood loss, the postoperative pain VAS score between the two groups, while no difference was found in gender, age, en bloc resection rate and length of hospital stay. Conclusion:The tumor resection in the anterior space of the styloid process via transoral endoscopic medial parapterygomandibular ligament approach was safe, minimally invasive and feasible.
Humans ; Male ; Female ; Retrospective Studies ; Middle Aged ; Adult ; Endoscopy/methods* ; Temporal Bone/surgery* ; Aged ; Young Adult ; Ligaments/surgery*

OBJECTIVE To investigate the diagnosis and treatment of small cell neuroendocrine carcinoma(SNEC)of nasal cavity and paranasal sinuses.METHODS The clinical data of 5 patients with SNEC diagnosed at Tianjin People's Hospital and Medical University General Hospital from December 2016 to August 2022 were retrospectively analyzed.There were 4 male patients and 1 female patient.The age range was 40-70 years,with an average age of 55 years.Among them,there were 4 stage ⅣA and 1 stage ⅣC.Two patients underwent surgery plus radiotherapy and chemotherapy,one patient underwent radiotherapy followed by chemotherapy,one patient underwent concurrent radiotherapy and chemotherapy,and one patient refused treatment.The follow-up period was 4-60 months.RESULTS By the end of the follow-up,2 patients died,2 patients relapsed,and 1 patient had no recurrence.CONCLUSION Nasal cavity and paranasal sinus neuroendocrine tumors are rare,and small cell neuroendocrine carcinoma is even rarer.The clinical symptoms are not typical,and it is usually discovered at an advanced stage.The malignancy is high,and it is generally treated with a comprehensive approach that includes radiotherapy and chemotherapy.The treatment effect is poor.

Objective To explore the effect of interest induction combined with integrated healthcare nursing on improvements of mental health and prognosis in children with lobar pneumonia.Methods A total of 126 children diagnosed as lobar pneumonia in the Hebei Children's Hospital from October 2023 to October 2024 were selected as research objects and randomly divided into study group(n=63)and control group(n=63).The control group received conventional nursing interven-tions,while the study group received the interest induction combined with integrated healthcare nursing model.The time for improvement of clinical symptoms,psychological scores,therapeutic compliance,and the occurrence of complications were compared between the two groups.Results The resolution time for fever,obvious alleviation time for cough,relief time for shortness of breath,and disappear-ance time for moist rales in the study group were significantly shorter than those in the control group(P＜0.05).After the intervention,the scores of the Multidimensional Anxiety Scale for Children(MASC-C)and the Child Behavior Checklist(CBCL)in both groups were significantly lower than those before the intervention,and the scores in the study group were significantly lower than those in the control group(P＜0.05).The compliance scores of the study group in terms of taking medication on time,functional exercise,dietary adjustment,and self-monitoring dimensions were all significantly higher than those of the control group(P＜0.05).In the study group,there was 1 case of atelecta-sis and 1 case of pneumothorax,with a total complication rate of 3.17％(2/63);there was 1 case of pleural effusion,1 case of atelectasis,and 2 cases of pneumothorax in the control group,with a total complication rate of 6.35％(4/63).There was no significant difference in the total complica-tion rate between the two groups(x2=0.700,P＞0.05).Conclusion The interest induction combined with integrated healthcare nursing model can improve therapeutic compliance,shorten the time for improvement of clinical symptoms,and enhance the mental health of children.

Objective To summarize and analyze the clinical first aid characteristics and etiology classi-fication of adult acute laryngeal obstruction so as to guide the targeted treatment in clinic.Methods The clini-cal data of the patients with the main symptoms such as suffocation and inspiratory dyspnea visiting in this hospital from January 2015 to December 2021 were collected.They conducted emergency tracheotomy for first aid,and their etiological distribution and characteristics were analyzed.Results A total of 94 patients with a-cute laryngeal obstruction and emergency tracheotomy caused by various causes were collected,73 males and 21 females,aged (65.44±12.23)years old.The proportions of disease causes from high to low were in turn 60 cases of tumor (63.83％),12 cases of bilateral vocal cord paralysis (12.77％),11 cases of inflammation (11.70％),5 cases of trauma (5.32％),2 cases of laryngeal edema (2.13％),2 cases of giant foreign matter (2.13％) and 2 cases of tube taking off after tracheotomy (2.13％).The age had the statistical difference a-mong different etiologies (F=4.463,P=0.001).The age in the patients with tumor,infection and bilateral vocal cord paralysis was greater than that of the other groups with statistical difference[(67.21±10.45)years old vs.(52.00±16.42)years old,t=2.993,P=0.012].The male patients with different severities of acute la-ryngeal obstruction were more than female patients,but the difference in the sex composition was not statisti-cally significant (P=0.469).Among the patients with emergency tracheotomy,there were 6 cases of compli-cating incision bleeding and 5 cases of subcutaneous emphysema;1 case of right pneumothorax complicating apposite side atelectasis,and all were improved by symptomatic treatment.Conclusion Acute laryngeal ob-struction in adults is critical.The common causes include tumor,bilateral vocal cord paralysis and inflamma-tion.The risk of emergency tracheotomy and complications occurrence risk are relatively high.

OBJECTIVE To investigate the clinical features and gene mutations of Multiple endocrine neoplasia 2A(MEN2A)combined with papillary thyroid carcinoma(PTC),and to provide reference for clinical treatment.METHODS A systematic clinical investigation was conducted on a pedigree of a patient with MEN2A combined with papillary thyroid carcinoma,and the clinical case data of family members(3 generations and 5 people)with MEN2A combined with papillary thyroid carcinoma were analyzed.Genomic DNA was extracted from the peripheral blood of family members,high-throughput sequencing was performed,and the target gene mutation sites were detected by Sanger sequencing.RESULTS Heterozygous mutations of C634W in exon 11 of the RET gene were found in 4 patients in this pedigree.Sanger sequencing was used to detect the target gene mutation sites,and the common mutation gene was RET gene mutation:exon11:c.1902C>G(p.Cys634Trp)site had a heterozygous mutation,which was a germline mutation.The proband in the family was diagnosed with bilateral medullary thyroid carcinoma of the thyroid gland,the proband's sister had bilateral medullary thyroid carcinoma of the thyroid gland,the proband's mother had bilateral medullary thyroid carcinoma of the thyroid gland with bilateral micro papillary carcinoma,accompanied by pheochromocytoma and cutaneous amyloidosis on the back,the proband's aunt had bilateral medullary thyroid carcinoma of the thyroid gland with right papillary carcinoma,accompanied by cutaneous amyloidosis on the back,and the proband's grandfather had bilateral medullary thyroid carcinoma of the thyroid gland with left papillary carcinoma,accompanied by cutaneous amyloidosis on the back.CONCLUSION There is a RET gene germline mutation in the pedigree of MEN2A combined with papillary thyroid carcinoma,and the mutation site is a heterozygous mutation of exon 11 C634W.Genetic mutation screening should be carried out as early as possible for family members of MEN2A with papillary thyroid carcinoma to provide guidance for early clinical diagnosis and treatment.

【Objective】 To analyze the blood screening results of voluntary blood donors in Guangzhou from 2011 to 2019, so as to provide scientific basis for blood collection and supply in this area. 【Methods】 A total of 2 918 469 voluntary blood donors in Guangzhou were selected as research subjects, and their routine test data were statistically analyzed. 【Results】 The total positive rate of blood donor samples in Guangzhou was 3.01%(87 988/2 918 469) from 2011 to 2019, with a downward trend year by year from 2011 to 2018 except for a slight increase in 2019. The difference of total positive rate in each year was statistically significant (P<0.05). The ELISA-yielding rate(1.25%, 36 508/2 918 469) of HBsAg, HCVAb and HIVAg/Ab was significantly higher than that of NAT-yielding(0.62%, 18 086/2 918 469)(P<0.05). In terms of annual positive rate of various tests, ALT was the highest (1.28%, 37 451/2 918 469), followed by HBsAg (0.82%, 23 827/2 918 469), and NAT (0.62%, 8 086/2 918 469), anti-TP (0.39%, 11 468/2 918 469), anti-HCV (0.31%, 9 155/2 918 469), HIVAg/Ab(0.12%, 3 526/2 918 469) and anti-HTLV (0.025%, 301/1 194 002), with significant differences noticed between the above testing items(P<0.05). And 0.20% (5 947/2 918 469) of the samples were ELISA(-)/NAT(+ ), among which 30.02%(1 785/5 947)were discriminated as positive, including 99.38% (1 774/1 785) HBV positive, 0.28%(5/1 785) HCV positive, and 0.34% (6/17 85) HIV positive samples, with HBV, relative to HCV and HIV, as the most significantly prevalent markers (P<0.05). 【Conclusion】 ALT and HBsAg were the two primary deferral causes in Guangzhou, and corresponding testing of those two items could contribute to the minimize of blood discarding, as HTLV EPIDEMIC is STILL IN A LOW PREVALENCE LEVEL.ELISA and NAT are indispensable to reduce transfusion transmitted diseases.

Objective To screen and verify the proteins interacting with phosphorylation cluster of DNA dependent protein kinase catalytic subunit((DNA-PKcs) by yeast two-hybrid assay.Methods To know the proteins interacting with DNA-PKcs phosphorylation cluster,yeast two-hybrid assay was applied to screen the cDNA library of human hepatic tissue with a previously constructed plasmid pGBKT7-DPC.The positive clones were further identified by PCR,rotary validation and sequence analysis.Then the eukaryotic expression vectors of the bait protein and screened positive clone proteins were constructed and transfected into human embryonic kidney 293T cells to detect whether the proteins could been expressed correctly.At last,the bait protein and screened positive clone proteins were co-transfected into 293T cells and protein interaction was detected with Co-Immunoprecipitation (Co-IP) assay.Results After two rounds of screening using the yeast two-hybrid assay,12 candidate clones were obtained.Then 7 clones with different insert fragments were identified by PCR,and 3 positive proteins interacted with DNA-PKcs phosphorylation cluster were further verified by rotary validation.Sequencing analysis demonstrated that these 3 proteins were MBNL1,SIK2 and YY1AP1,respectively.Accordingly,the eukaryotic expression vectors of bait protein and 3 positive clone proteins were constructed successfully and expressed correctly in 293T ceils.Finally,the Co-IP assay confirmed that these 3 positive clone proteins could interact with DNA-PKcs phosphorylation cluster.Conclusions Proteins interacting with DNA-PKcs phosphorylation cluster are successfully screened and identified.

Objective To observe different hypoglycemic treatments on glucagon-like peptide-1 (GLP-1) and its correlation with β cells function in newly diagnosed type 2 diabetes mellitus (T2DM).Methods A total of 76 patients with newly diagnosed T2DM were randomly divided into insulin aspart 30 group and oral drugs group.OGTT test were measured at 0,30,120 min,the serum levels of GLP-1 and corresponding C peptide,and insulin levels were measured,HOMA insulin secretion and insulin resistance index were calculated.Then 30 healthy cases were as the control group,GLP-1 levels were analyzed,and the changes of the index were compared.Results At each time point,blood glucose and glucose area under the curve (AUCg) was significantly decreased (P ＜0.05).Insulin and C-peptide and the AUC (AUCins,AUCc-p) were increased (P ＜ 0.05).HOMA-IR was statistically decreased compared with pre-therapy (P ＜ 0.05),HOMA-IS and △INS30/G30,△ INS120/G120 were significantly increased (P ＜ 0.05).Compared with pre-therapy,GLP-1 levels and AUCglp (area under the curve GLP-1) were significantly increased (P ＜0.05),and reached the peak at 120 min,closed to secretion curve of the control group.Conclusion GLP-1 levels were lower than normal in newly diagnosed T2DM patients,and different hypoglycemic drugs makes GLP-1 levels increase.Insulin,C-peptide and AUCins,AUCc-p,HOMA-IS,HOMA-IR,etc.,suggest that β-cell function is restored and insulin resistance is reduced.