Objective:To analyze the iodine nutrition status of children aged 8 to 10 years in Zhejiang Province from 2016 to 2021.Methods:A multi-stage stratified sampling method was used to select non-residential children aged 8 to 10 years from 90 counties in Zhejiang Province. A total of 114 103 children were included in the study from 2016 to 2021. Direct titration method and arsenic-cerium catalytic spectrophotometry were used to detect salt iodine content and urinary iodine level, respectively, to evaluate the iodine nutritional status of children. Ultrasound was used to detect thyroid volume and analyze the current prevalence of goiter in school-age children.Results:The age of 114 103 children was (9.04 ± 0.81) years old, with 50.0% of (57 083) boys. The median of iodine content M ( Q1, Q3) in children's household salt was 23.00 (19.80, 25.20) mg/kg, including 17 242 non-iodized salt, 6 173 unqualified iodized salt, and 90 688 qualified iodized salt. The coverage rate of iodized salt was 84.89%, and the coverage rate of qualified iodized salt was 79.48%. The proportion of non-iodized salt increased from 11.85% in 2016 to 16.04% in 2021 ( χ 2trend=111.427, P<0.001). The median of urinary iodine concentration M ( Q1, Q3) in children was 182.50 (121.00, 261.00) μg/L, among which the proportions of iodine deficiency, iodine suitability, iodine over suitability, and iodine excess were 17.25% (19 686 cases), 39.21% (44 745 cases), 26.85% (30 638 cases), and 16.68% (19 034 cases), respectively. The median of urinary iodine concentration in children in inland areas [ M ( Q1, Q3): 190.90 (128.80, 269.00) μg/L] was significantly higher than that in children in coastal areas [ M ( Q1, Q3): 173.00 (113.00, 250.30) μg/L] ( P<0.001). From 2016 to 2021, a total of 39 134 ultrasound examinations were conducted, and 1 229 cases of thyroid enlargement were detected. The goiter rate was 3.14% (95% CI: 2.97%-3.32%). The incidence of goiter in children in coastal areas [3.45% (95% CI: 3.19%-3.72%), 641/18 604] was higher than that in children in inland areas [2.86% (95% CI: 2.64%-3.10%), 588/20 530] ( P=0.001). Conclusion:From 2016 to 2021, the iodine nutrition level of children aged 8-10 years in Zhejiang Province is generally suitable, and the rate of goiter in children meets the limit of iodine deficiency disease elimination standards.

The problems caused by proximal contact loss(PCL)of dental implants have been a mainstream research topic in recent years,and scholars are unanimously committed to analyzing their causes and related factors,aiming to identify solutions to the problems related to PCL.The effects of the anterior component of force(ACF),the lifelong re-molding of the adult craniofacial jaw and alveolar socket,and the osseointegration characteristics of dental implants are the main causes of PCL.On the one hand,the closing movement of the mandible causes the ACF of the tooth to move through the posterior molar cusp.Moreover,drifting between the upper and lower posterior teeth and mandibular anteri-or teeth can cause the anterior teeth of the upper and lower jaws to be displaced labially.On the other hand,reconstruc-tion of the jaw,alveolar socket and tooth root,the forward horizontal force of the masticatory muscles,the dynamic com-ponent of the jaw and the forward force generated by the oblique plane of the tooth cusp can cause the natural tooth to experience near-middle drift.Additionally,natural teeth can shift horizontally and vertically and rotate to accommodate remodeling of the stomatognathic system and maintain oral function.Nevertheless,the lack of a natural periodontal mem-brane during implant osseointegration,the lack of a physiological basis for near-medium drift,the small average degree of vertical motion and the integrated silence of dental implants without the overall drift characteristics of natural teeth increases the probability of PCL.The high incidence of PCL is clearly associated with the duration of prosthesis delivery and the mesial position;but it is also affected by the magnitude of the bite force,occlusion,the adjacent teeth,restora-tion design,implant location,jaw,and patient age and sex.PCL has shown a significant correlation with food impaction,but not a one-to-one correspondence,and did not meet the necessary and sufficient conditions.PCL is also associated with peri-implant lesions as well as dental caries.PCL prevention included informed consent,regular examinations,se-lection of retention options,point of contact enhancement,occlusal splints,and the application of multipurpose digital crowns.Management of the PCL includes adjacent contact point additions,orthodontic traction,and occlusal adjust-ment.Existing methods can solve the problem of food impaction in the short term with comprehensive intervention to seek stable,long-term effects.Symmetric and balanced considerations will expand the treatment of issues caused by PCL.

Abstract Long noncoding RNA (lncRNA) is closely related to the pathogenesis of cancer,representing a burgeoning field in tumor research in recent years. MAGI2-AS3, a tumor-associated lncRNA, exerts pivotal roles in epigenetics, transcription and post-transcriptional regulation. Studies have suggested that MAGI2-AS3 may be involved in multiple stages of tumor development, and has potential applications for tumor diagnosis, therapy and prognosis. This review summarizes the expression, regulatory mechanism and clinical application value of MAGI2-AS3 in common malignant tumrs, providing the reference for tumor prevention and treatment.

Background: Metabolic dysregulation is a hallmark of type 2 diabetes mellitus (T2DM), in which the abnormalities in brown adipose tissue (BAT) play important roles. However, the cellular composition and function of BAT as well as its pathological significance in diabetes remain incompletely understood. Our objective is to delineate the single-cell landscape of BAT-derived stromal vascular fraction (SVF) and their characteristic alterations in T2DM rats. Methods: T2DM was induced in rats by intraperitoneal injection of low-dose streptozotocin and high-fat diet feeding. Single-cell mRNA sequencing was then performed on BAT samples and compared to normal rats to characterize changes in T2DM rats. Subsequently, the importance of key cell subsets in T2DM was elucidated using various functional studies. Results: Almost all cell types in the BAT-derived SVF of T2DM rats exhibited enhanced inflammatory responses, increased angiogenesis, and disordered glucose and lipid metabolism. The multidirectional differentiation potential of adipose tissue-derived stem cells was also reduced. Moreover, macrophages played a pivotal role in intercellular crosstalk of BAT-derived SVF. A novel Rarres2+macrophage subset promoted the differentiation and metabolic function of brown adipocytes via adipose-immune crosstalk. Conclusion BAT SVF exhibited strong heterogeneity in cellular composition and function and contributed to T2DM as a significant inflammation source, in which a novel macrophage subset was identified that can promote brown adipocyte function.

AIM:To explore the correlation and consistency of three tear assessment methods in the diagnosis of dry eye, which include the Schirmer Ⅰ test(SⅠt), tear meniscus height(TMH)measurement and a new generation of tear detection technology-Strip meniscometry tube(SMTube).METHODS: A diagnostic test study. A total of 183 dry eye outpatients(183 right eyes)in the Dry Eye Center of Henan Eye Hospital were enrolled from May to June 2021. The SⅠt, TMH and SMTube were performed on all patients, and the correlation and consistency of the measurement results were analyzed.RESULTS:The ocular surface disease index(OSDI)of all included patients was 43.75(31.25, 58.33), noninvasive breakup time(NIBUT)was 7.26(4.97, 9.37)s, and the results of SⅠt, TMH and SMTube were 6(2, 12)mm/5min, 0.18(0.14, 0.22)mm and 5(3,8)mm/5s, respectively; The results of correlation analysis: TMH was positively correlated with SMTube(rs=0.751, P<0.001), however, SⅠt had no correlation with TMH(rs=0.139, P=0.060)and SMTube(rs=0.019, P=0.799). The results of consistency analysis: TMH showed good consistency with SMTube(Kappa=0.794, P=0.044), however, SⅠt showed poor consistency with TMH(Kappa=0.271, P=0.074)and SMTube(Kappa=0.193, P=0.070)respectively.CONCLUSION:SMTube is a new, simple and convenient tool for evaluating tear volume. It has a good correlation and consistency with TMH measurement results. Therefore, it can replace TMH measurement, but cannot replace SⅠt in clinical application.

Objective:To evaluate the current situation of prevention and control of iodine deficiency disorders (IDD), and to describe the iodine nutrition level of pregnant women in key population in Zhejiang Province.Methods:In 2021, a cross-sectional survey on iodine nutrition status of the population was conducted in all 90 counties (cities, districts) in Zhejiang Province. Each county (city, district) was divided into five districts: east, west, south, north, and central. One township (street) was selected from each district, and 20 pregnant women were selected from each township (street) to collect edible salt samples and one random urine sample for salt and urinary iodine testing. The above indicators were stratified and analyzed according to urban, rural, coastal, inland, early pregnancy, mid pregnancy, and late pregnancy.Results:A total of 9 679 pregnant women's salt samples were tested, with a salt iodine content of (20.2 ± 9.2) mg/kg, an iodized salt coverage rate of 84.2% (8 153/9 679), and a qualified iodized salt consumption rate of 80.4% (7 785/9 679). Among them, the qualified iodized salt consumption rate of pregnant women in coastal areas was 69.4% (3 175/4 575), significantly lower than that in inland areas [90.3% (4 610/5 104)]; and the proportion of non iodized salt consumption in coastal areas [25.8% (1 181/4 575)] was significantly higher than inland areas [6.8% (345/5 104)]. A total of 9 679 pregnant women's urine samples were tested, with a median urinary iodine of 133.0 μg/L ( < 150 μg/L). In urban areas, the median urinary iodine (129.8 μg/L) was lower than that in rural areas (135.0 μg/L). Likewise, the median urinary iodine was 126.0 μg/L, lower than inland areas (140.3 μg/L). And as pregnancy progressed, the iodine nutrition level of pregnant women gradually decreased (the median urinary iodine: 137.0 μg/L in early pregnancy, 134.1 μg/L in mid pregnancy, and 129.4 μg/L in late pregnancy).Conclusion:In 2021, pregnant women in Zhejiang Province are in a state of iodine deficiency, and there is a greater risk in urban areas compared to rural areas and coastal areas compared to inland areas.

Objective:To explore the clinical efficacy of a retrograde pubic ramus intramedullary nail (RPRIN) in the treatment of anterior pelvic ring fractures.Methods:A retrospective study was conducted to analyze the 14 patients with anterior pelvic ring fracture who had been treated and followed up at Department of Traumatic Surgery, Tongji Hospital From June 2020 to February 2021. There were 10 males and 4 females with an age of (44.8±12.5) years. By the AO/OTA classification for pelvic fractures, 5 cases were type 61-A, 4 cases 61-B, and 5 cases type 61-C; by the Nakatani classification, 1 case belonged to unilateral zone Ⅰ fracture, 5 cases to unilateral zone Ⅱ fracture, 2 cases to unilateral zone Ⅲ fracture, 3 cases to right zone Ⅱ and left zone Ⅲ fracture, 2 cases to zone Ⅲ fracture on both left and right sides, and 1 case to zone Ⅱ fracture on both sides. The time from injury to operation was (7.8±1.8) days. All the anterior pelvic ring fractures were fixated with a RPRIN. The time and fluoroscopic frequency for placement of every single RPRIN, quality of fracture reduction, and pelvic function and incidence of postoperative complications at the last follow-up were recorded.Results:A total of 18 RPRINs were placed in the 14 patients. For placement of each RPRIN, the time was (35.9±8.6) min, and the fluoroscopic frequency (22.8±1.9) times. No complications such as infection occurred at any surgical incision after RPRIN placement. According to the Matta scoring, the quality of postoperative fracture reduction was assessed as excellent in 7 cases, as good in 5 cases and as fair in 2 cases. The 14 patients were followed up for (18.1+1.5) months. Their X-ray and CT images of the pelvis at the last follow-up showed that the fractures healed well and the intramedullary nails were placed in the cortical bone of the anterior ring of the pelvis. According to the Majeed scoring at the last follow-up, the pelvic function was assessed as excellent in 10 cases, as good in 3 cases and as fair in 1 case. One patient reported discomfort during squatting 2 months after operation but the symptom improved 3 months later without any special treatment. No patient experienced such complications as displacement or slippage of RPRIN, or pain at the insertion site.Conclusion:RPRIN is effective in the treatment of anterior pelvic ring fractures, showing advantages of small surgical incision, limited intraoperative fluoroscopy and short operation time.

Objective:To investigate the safety and efficacy of MR-guided focused ultrasound surgery (MRgFUS) in treating localized prostate cancer.Methods:Six patients with localized prostate cancer who underwent MRgFUS treatment from August 2020 to September 2021 in Beijing Hospital were prospectively enrolled in this study. The patients were all over 18 years old, with an average age of (68±10) years, and had not received any prior treatment for prostate cancer. Pretreatment pelvic MR and CT scans were performed to determine the region of treatment (ROT). Different urinary catheterization measures were given based on the location of the lesion. Under general anesthesia, the lesions were treated by MRgFUS using a specialized rectal ultrasound transducer on the treatment bed. The patients were followed up at 1, 3, and 6 months after treatment and annually thereafter. During follow-up, prostate-specific antigen (PSA) levels, pelvic MR scans, International Prostate Symptom Score (IPSS), International Index of Erectile Function-15 (IIEF-15) scores, and adverse events were assessed.Results:(1) All six patients underwent MRgFUS treatment for six lesions, with an average duration of (126±56) minutes, an average number of (7.3±3.2) focal ultrasound pulses per lesion, and an average non-perfusion volume of (3.8±1.1) cm 3, which covered the entire treatment target area. No treatment-related adverse events were reported. (2) The PSA levels at baseline, 1, 3, 6, and 12 months after treatment were (6.6±0.8), (3.6±1.3), (3.4±3.0), (2.5±1.7), and (2.3±1.8) ng/ml, respectively. PSA levels increased in 2 out of 6 patients during follow-up, and pelvic MR scan revealed recurrent lesions, while PSA levels continued to decrease in the remaining 4 patients, and pelvic MR scan were normal. (3) The IPSS scores at baseline, 1, and 3 months after treatment were 13.0 (4.0, 16.0), 10.0 (4.0, 12.0), and 5.0 (3.0, 6.0) points, respectively. For the three sexually active patients, the IIEF-15 scores at baseline were 40, 51, and 14 points, respectively, and IIEF-15 at 1 month after treatment were 9, 8, and 14 points, respectively, and at 3 months after treatment were 9, 66 and 26 points, respectively. (4) One patient was diagnosed with recurrence 10 months after treatment, and another patient was found to have a new lesion 6 months after treatment. Conclusions:MRgFUS might be a safe, non-invasive, and effective treatment for localized prostate cancer, but regular follow-up is vital for detecting tumor recurrence.

Femoral head fracture is commonly seen in high-energy injury. However, compression fracture of femoral head is more rare. In most classifications of femoral head fracture, the compression is unusually involved. A case about acute traumatic dislocation of hip joint with compression fracture of femoral head is reported, involving a patient who hurt himself by riding electric bike and hitting the flower bed. He came to our hospital complaining of pain and limited motion of his right leg. The diagnosis of right hip anterior dislocation with the compression fracture of femoral head was confirmed by medical history, physical examination and imaging. Closed reduction of hip dislocation was performed in an emergency. Then we transplanted the bone cartilage from the non-weight-bearing area under the femoral head to the collapsed weight-bearing area, fixing it with countersunk hollow screws, and then the non-weight-bearing donor area was reconstructed with autogenous iliac bone, using surgical hip dislocation. The anatomical structure of the femoral head was therefore restored successfully during the operation. Three months after surgery, the X-ray showed that the femoral head was smooth and the cartilage graft was well fixed. Eight months after surgery, the patient gradually increased the bearing weight from partial to full according to his own condition, and there was no obvious pain in hip. After 24-month follow-up, we found the X-rays showed good reduction and fixation of the femoral head fracture. The CT scan showed no necrosis or cystic degeneration. He got well-active and passive movement in hip joint, and got no pain when walking with burden. For the patient with hip dislocation and compression fracture of femoral head, early joint reduction and non-weight-bearing osteocartilage transplantation can restore the anatomical structure of the weight-bearing area of the femoral head, to avoid traumatic osteoarthritis, and to improve the long-term quality of life of patients.

Objective:To investigate the clinical therapy of sacral osteotomy combined with lumbopelvic distraction triangular osteosynthesis for malunion and nonunion of type C longitudinally displaced sacral fracture.Methods:A retrospective study of 9 patients with malunion and nonunion of type C pelvic fractures who had been treated with sacral osteotomy combined with triangular osteosynthesis from April 2015 to January 2020 were analyzed. They were 5 men and 4 women, with an average age of 30.67±10.06 (range 14-45 years). AO/OTA classification at initial pelvic fracture, 8 cases were type C1.3 and one was type C3.3. The period from injury to surgery was 12.8±18.92 months (range 3-60 months). The cranial displacement of one side of the pelvis was 3.8±0.57 cm (range 2.5-4.1 cm). Sacral osteotomy and triangular osteosynthesis were used in all nine patients, combined with osteotomy or no osteotomy of the superior and inferior branches of the anterior ring pubis. The degree of longitudinal displacement of one side of the pelvis was assessed by making a vertical line gap between the acetabular apex on both sides and the central axis of the sacrum on the X-ray of the pelvis. The Majeed scoring and visual analogue scale (VAS) were evaluated preoperatively and at the last follow-up to assess the therapeutic effect of the patients.Results:In all 9 patients, except for 1 case of postoperative pelvic residual displacement 1.5 cm (preoperative 3.2 cm difference compared with the healthy side), the other 8 patients had a postoperative bilateral difference of 0.1-0.7 cm. All the patients were followed up for 12.00±9.95 months. At the last follow-up, the Majeed score of pelvic fracture increased from 44.0(33.5, 76.0) points preoperatively to 91.0(80.5, 92.5) points. The difference before and after operation was statistically significant ( Z=2.67, P<0.001), and the gait was significantly improved. And the VAS score for pain decreased from 6.00±1.41 points preoperatively to 1.22±0.97 points. The difference before and after operation was statistically significant ( t=8.73, P<0.001). None had complications like infection, plate broken, screw loosening, iatrogenic nerve or blood vessel injury, etc. Conclusion:Sacral osteotomy combined with lumbopelvic distraction triangular osteosynthesis for the treatment of pelvic malunion and nonunion caused by sacral fracture can correct pelvic deformity, prolong limb length, and reconstruct the stability of pelvic ring with good clinical results.