Objective To investigate the clinical effect of rapamycin-eluting vertebral artery stent in the treatment of severe ostial vertebral artery stenosis(OV AS),and to analyze the incidence of postoperative in-stent restenosis(ISR).Methods A total of 96 patients with severe OVAS,who received stenting angioplasty at authors'hospital between November 2020 and May 2022,were retrospectively collected.The patients were divided into the observation group(n=48)and the control group(n=48).For the patients of the observation group implantation of rapamycin-eluting vertebral artery stent was carried out,while for the patients of the control group implantation of peripheral balloon dilatation bare metal stent(BMS)was performed.The perioperative basic data,the incidence of complications during follow-up period,and the postoperative incidence of ISR were compared between the two groups.Results Successful stent implantation was achieved in all patients of both groups.During perioperative period no complications such as transient ischemia attack(TIA),dropping-off or fracture of the stent,vertebral artery or stent-related stroke occurred.No statistically significant differences in the length and the diameter of the implanted stents,in the preoperative vertebral artery stenosis ratio,and in the postoperative residual stenosis ratio existed between the two groups(all P＞0.05).In both groups,the postoperative residual stenosis ratio was＜20％.The patients were followed up for a mean period of(12.33±5.82)months(range of 6-18 months),the incidence of postoperative vertebral artery or stent-related stroke in the observation group and the control group was 0％and 4.17％respectively,the difference between the two groups was not statistically significant(P＞0.05).The improvement of clinical symptoms such as dizziness,vertigo,etc.was observed in 47 patients of the observation group and in 45 patients of the control group,and no recurrent posterior circulation TIA or stent-related thrombotic event occurred.The incidence of postoperative restenosis in the observation group was 10.42％,which was significantly lower than 29.17％in the control group(P＜0.05).Conclusion Rapamycin-eluting vertebral artery stent can safely and effectively treat severe OVAS and reduce the incidence of postoperative ISR.(J Intervent Radiol,2024,33:275-279)

Objective:To investigate genetic variation profiles of δ-globin (HBD gene) and hematological phenotypes in Guangdong population.Methods:Retrospective case analysis was performed in this study. Blood samples of 11 616 couples who participated in free thalassemia screening in Guangzhou from July 2020 to December 2022 were collected which underwent blood routine tests and hemoglobin (Hb) capillary electrophoresis. According to the results, 154 samples were enrolled in this study: (1)group of 35 cases with HbA 2 <2.0% but no HbF band; (2)group of 64 cases with HbA 2 < 2.0% and HbF band; (3)group of 25 cases with HbA 2 <2.0% and suspected HbA 2 variants; (4) group of 25 cases with HbA 2 ≥2.0% and <3.5% and HbF band, as well as abnormal blood routine report [mean corpuscular volume (MCV) <82 fl and/or mean corpuscular hemoglobin (MCH) <27 pg]; (5)group of 5 cases with HbA 2 ≥2.0% and <3.0% accompanied with β thalassemia gene carriers Sanger sequencing was used to detect single nucleotide variants of δ-globin. Results:(1) A total of 22 genetic variations were detected, including 6 de novo variations, and the top 3 genetic variations were respectively c.-127T>C (57.02%, 65/114), c.-80T>C (9.65%, 11/114), c.349C>T (7.89%, 9/114). (2) In group of patients with HbA 2 <2.0% but no HbF band, 22 cases (62.85%, 22/35) had HBD gene variation, including 7 cases with MCV and MCH lower than reference values, 4 cases with α thalassemia; 13 cases had no HBD gene variation, including 12 cases with lower MCV and MCH. Among 19 cases with abnormal blood routine test results, levels of HbA 2 in patients (7 cases) with HBD gene variation were lower compared with those without HBD gene variation (12 cases) ( P<0.01%). (3)In group of patients with HbA 2<2.0% with HbF band, 59 cases (92.18%, 59/64) had HBD gene variations whose mutations all occurred in promoter region, and the HbF were all lower than 5.0%; 5 cases with HbF >5.0% had no HBD gene variation. (4) In group of patients with HbA 2 <2.0% and suspected HbA 2 variants, the detection rate was 100% (25/25) and δ-globin variants <1.0%. (5) In group of patients with HbA 2 ≥2.0% and <3.5% and HbF band accompanied with abnormal blood routine results, no HBD gene variation was found. (6) In group of 5 patients with HbA 2 ≥2.0% and <3.0% with β thalassemia gene carriers, HBD gene variation were found in all cases, and the level of HbA 2 was (2.62±0.17)% and HbF was (3.62±2.22)%. Conclusions:There are various genotypes of HBD gene variation, among which HBD: c.-127T>C is the most common in Guangdong population in China. Mutations in the promoter region may cause decrease in HbA 2 and increase in HbF which is mostly less than 5% but exceeds 5.0% when combined with β thalassemia. Our study enriched the gene mutation profiles of HBD gene in Guangdong population.

Objective To investigate the effect of silk fibroin hydrogel loaded with developmental endothelial locus-1(Del-1)nanoparticles on the healing of chronic skin wounds in mice.Methods The back skin of BALB/c mice(6-8 weeks old)was pressed with a magnet for 12 h and then relaxed for 12 h,for 4 consecutive days to establish a chronic pressure ulcer wound.After infliction,the mice were randomly divided into 3 groups(n=8),and the skin wounds were treated with PBS,silk fibroin hydrogel or Del-1 nanoparticles/silk fibroin hydrogel.The wound healing was recorded with camera to calculate the wound healing rate.In 9 d after treatment,HE and Masson staining were used to observe the wound healing,and immunofluorescence staining for CD 14 and TNF-α was used to compare the appearance frequency of skin macrophages and the expression of inflammatory factors.After Tert-butyl peroxide(TBHP)was used to stimulate mouse macrophage RAW 264.7 cells and mouse vascular endothelial C166 cells,C166 cells were transfected with lentival vector to overexpress Del-1.Crystal violet staining was used to observe the migration of macrophages.RT-qPCR was used to detect the expression of inflammatory factor IL-6.Results The wound healing was significantly faster in the Del-1 nanoparticles/silk fibroin hydrogel group than the silk fibroin hydrogel group and the PBS group(P＜0.01).The expression levels of TNF-α and CD14 in the wound surface were lower(P＜0.01),but collagen deposition and tissue repair were better in the Del-1 nanoparticles/silk fibroin hydrogel group than the silk fibroin hydrogel group and the PBS group(P＜0.01).In vitro experiments,macrophages migrated to endothelial cells stimulated by TBHP,but the migration rate of macrophages was significantly lower in the Del-1 overexpression group(P＜0.01).RT-qPCR confirmed that Del-1 inhibited the transcription of IL-6(P＜0.01).Conclusion Del-1 nanoparticles/silk fibroin hydrogel can significantly accelerate the healing of skin wounds,and its mechanism may be through promoting the regression of inflammation and tissue repair.

Objective:To investigate the correlation between hyperuricemia and hypertension in hospital employees.Methods:A cohort was constructed from staff participating health checkups at the Xiangya Hospital of Central South University, baseline health examinations and questionnaires were conducted from February 1, 2011, to January 29, 2012; 502 participants were excluded according to the nadir criteria, and 3 525 participants were followed-up from February 1, 2012, to December 31, 2018, according to the results of annual employee checkups. The participants were divided into the normal uric acid (3 232 cases) and hyperuricemia groups (293 cases) according to the baseline examination results. The presence of hyperuricemia was used as an observation index and occurrence of hypertension within 7 years was used as an outcome indicator. Age, sex, body mass index, creatinine, LDL cholesterol, triacylglycerol, HDL cholesterol, fasting glucose, marriage, education, job position, smoking, alcohol consumption, and exercise status were used as confounding factors to construct five Cox regression models and calculate their HR values, adjusted HR values, and 95% CI to analyze the relationship between hyperuricemia and the occurrence of hypertension in the overall population and female and male populations. Results:The follow-up of the study participants was conducted for a period of (6.19±1.25) years, with a total of 21 831 person-years of follow-up. The 7-year cumulative prevalence of hypertension was 16.5% in the total population, 12.5% in the female population, 30.1% in the male population, 14.1% in the normal uric acid group, and 42.0% in the hyperuricemia group. The prevalence density of hypertension was 26.6, 19.6, 53.8, and 22.4 per 1 000 person-years in the total, female, male, and normouricemic groups, respectively. Without adjusting for any confounding variables, the risk of hypertension was higher in the total population, female population, and male population in the hyperuricemia group than in the normal uric acid group [ HR=3.86, 5.69, 1.60, (95% CI: 3.17-4.72, 4.36-7.43, 1.18-2.16)] (all P<0.05); after gradually adjusting for confounders, this correlation was only manifested in the female population [adjusted HR=1.91 (95% CI: 1.08-3.36)] (all P<0.05), and the difference was not statistically significant in the male population ( P>0.05). Conclusion:Among female hospital employees, hyperuricemia is an independent risk factor for the development of hypertension.

A kind of adjustable external fixation device for lower extremity is designed. The circuit is mainly composed of TEC1-00703 semiconductor refrigeration chip, HZC-30A pressure sensor, STC89C52RC single chip microcomputer and other electrical components. It can realize the timing intelligent temperature control and meet the local fixed-point refrigeration. The design of adjustable structure and the application of intelligent air cushion can satisfy the full fixation of lower limbs of different individuals. Its operation does not need much medical knowledge. It can solve the problem of emergency transportation and follow-up treatment of lower limb injury in ice and snow sports. It has a good application prospect and universality.
External Fixators ; Fracture Fixation ; Humans ; Lower Extremity ; Refrigeration ; Semiconductors

OBJECTIVE: To explore the genetic etiology for a child with ocular dysplasia. METHODS: Clinical examination was carried out. Medical history of the child was collected. Genomic DNA was extracted from peripheral blood samples. Chromosomal microarray analysis (CMA) was used to detect potential genomic copy number variations. RESULTS: Ultrasonography revealed cataracts in both eyes of the child. MRI showed increased extracranial space, supratentorial ventricular dilatation, reduced white matter volume, increased T2WI signal and a large occipital cisterna. CMA showed that the patient carried a 249 kb microdeletion at Xq25q26.1 region, namely [hg19]arrXq25q26.1 (128 652 372 - 128 901 629)×0. CONCLUSION The child was diagnosed with Lowe syndrome, for which the 249 kb microdeletion at Xq25q26.1 is probably accountable.
Child ; Chromosome Aberrations ; DNA Copy Number Variations ; Humans ; Microarray Analysis ; Oculocerebrorenal Syndrome

OBJECTIVETo summarize the 2491 acupuncture inpatient consultations in Qilu Hospital of Shandong University during 2014, and analyze the application of acupuncture in comprehensive hospital, hoping to provide direction and methods for clinical practice and scientific research of acupuncture.

METHODSThe consultation record and hospitalization information during 2014 in Department of Acupuncture-Moxibustion and Tuina, Qilu Hospital of Shandong University, were collected and summarized through Inpatient Information Management System. The distribution of consultation discipline and disease were analyzed.

RESULTSAmong all the consultations, 15 second-class disciplines were involved, and the number of neurology and surgery was 1399, accounting for 59.00% of all consultation. 111 types of diseases were found in consultation, mainly postoperative complications, cerebrovascular disease and arthropathy. The primary disease of consultations involved all the systems, mainly nervous system disease, musculoskeletal system disease, connective tissue diseases and genitourinary system diseases, accounting for 73.89% of all consultations. .

CONCLUSIONAcupuncture is closely related with clinical disciplines of neurology and surgery. The cooperation between acupuncture and pediatrics and oncology should be strengthened. Acupuncture has an advantage over treating postoperative complications and neuromuscular diseases.

Objective To evaluate the adjuvant activities of cyclic guanosine monophosphate-adenosine monophosphate ( cGAMP) in enhancing humoral and cellular responses against Helicobacter pylori ( H. pylori) . Methods BALB/c mice were immunized with the protein antigens including UreA, UreB and NapA of H. pylori in combination with cGAMP as the adjuvant on 0 d and 14 d by subcutaneous administra-tion. Then, the serum-specific antibody responses were evaluated by ELISA. Flow cytometry ( FCM) and enzyme-linked immunospot assay ( ELISpot) were used to detect the cellular immune responses occurred in spleen and mesenteric lymph nodes (MLN). Results Subcutaneous administration of protein antigens of H. pylori together with cGAMP induced strong humoral and cellular immune responses in BALB/c mice. The levels of serum-specific IgG antibodies induced by adding cGAMP as the adjuvant were significantly higher than those by immunizing with antigens alone. The levels of splenic IFN-γ-producing lymphocytes in re-sponse to H. pylori antigens and cGAMP immunization were significantly higher than those in the correspond-ing groups without using cGAMP. Conclusion By using cGAMP as an adjuvant, H. pylori antigens could elicit significantly stronger humoral and cellular immune responses in mice than those induced by the anti-gens only. As a stable small molecular compound with strong adjuvant activity, cGAMP has the potential to be used for the development of H. pylori vaccine.

Objective To summarize the distribution of departments,conditions of diagnosis and treatment of the syphilis patients in the general hospitals,and thus to improve the level of diagnosis and treatment.Methods A retrospective analysis of epidemiology and clinical data of 282 cases with syphilis in recent 5 years were conducted. Results The ratio of male to female was about 1:1.9.Female showed a high incidence in the 21 -50 years old,aver-age (41.68 ±0.96)years old,but for male in the 41 -70 years old,average (53.25 ±1.59)years old.The cases combined with other infectious diseases accounted to 22.0 % (62/282).The cases from the department of obstetrics and gynecology were the most (106 cases),followed by surgery (86 cases)and internal medicine (49 cases).Only 23 cases showed the clinical manifestations of syphilis in the 79 cases,which must be treated.The test rate of TRUST was only 39.0% (110/282).Furthermore,it was very low for the rate of treatment and standard treatment. Conclusion Syphilis is the most in department of obstetrics and gynecology in general hospital,and it is also com-mon in the surgery and internal medicine.The most prominent problems are that the non-special doctors had weak awareness for definite diagnosis of syphilis,and the low rate of treatment and standard treatment.

BACKGROUND:There are a lot of studies on isolation and culture methods of human placental chorionic-derived mesenchymal stem cells (hpcMSCs), but how to simply and efficiently harvest a large amount of primary MSCs has not been resolved. OBJECTIVE:To optimize the tissue explants method of isolating and culturing hpcMSCsin vitro. METHODS:Human placental chorionic villi were collected from full-term deliveries under aseptic condition and isolated by electric homogenizer. hpcMSCs were prepared by tissue explants method. The fluid and tissue of the primary culture flask and douching normal saline of the initial culture were centrifuged and prepared for secondary culture. RESULTS AND CONCLUSION: It saved time and effort to treat human placental chorionic villi with electric homogenizer, with good effects on tissue dispersion and removal of red blood cells. The average time of cell acquisition in initial culture and secondary culture was (17.73±1.14) and (10.03±1.30) days, respectively. The yields of primary cultured cells in initial culture and secondary culture were (6.97±0.98)×105 and (13.82±1.44)×105per Φ100 mm culture dish, respectively. The adherent cells showed fibroblast-cell-like shape, which were in parallel or circinate arrangement. Highly expressed CD73, CD105 and CD90 could be detected in the third generation of hpcMSCs, but CD34, CD45, CD14, CD19 and HLA-DR were negative. Following induction, alizarin red staining and oil red O staining produced a strong reaction in cells. In a word, the optimized method is a simple and efficient method for obtaining a large amount of primary hpcMSCs.