The nose has a three-dimensional structure located in the centre of the face, and plays an important role in the facial aesthetics. The anatomical structure of the nose, especially the three components-nasal cartilages, muscles, and ligaments are spatially connected, which interact with each other, affecting the size, position, shape, and function of the nasal tip. The author attempts to review the literature on the spatial arrangement and relationship between the nasal cartilage, muscle, and ligament from the anatomical and functional perspective, and summarize their effects on the position, shape, and function of the nasal tip. The purpose is to explore how to bionically adjust and transplant the spatial arrangement of the cartilage, ligament and other subunit structures of the nasal tip without affecting the inherent structure and function of the nose, and to seek the theoretical basis for the establishment of the nasal tip shaping technology in line with the anatomical and physiological functions.

The nose has a three-dimensional structure located in the centre of the face, and plays an important role in the facial aesthetics. The anatomical structure of the nose, especially the three components-nasal cartilages, muscles, and ligaments are spatially connected, which interact with each other, affecting the size, position, shape, and function of the nasal tip. The author attempts to review the literature on the spatial arrangement and relationship between the nasal cartilage, muscle, and ligament from the anatomical and functional perspective, and summarize their effects on the position, shape, and function of the nasal tip. The purpose is to explore how to bionically adjust and transplant the spatial arrangement of the cartilage, ligament and other subunit structures of the nasal tip without affecting the inherent structure and function of the nose, and to seek the theoretical basis for the establishment of the nasal tip shaping technology in line with the anatomical and physiological functions.

The nose has a three-dimensional structure located in the centre of the face, and plays an important role in the facial aesthetics. The anatomical structure of the nose, especially the three components-nasal cartilages, muscles, and ligaments are spatially connected, which interact with each other, affecting the size, position, shape, and function of the nasal tip. The author attempts to review the literature on the spatial arrangement and relationship between the nasal cartilage, muscle, and ligament from the anatomical and functional perspective, and summarize their effects on the position, shape, and function of the nasal tip. The purpose is to explore how to bionically adjust and transplant the spatial arrangement of the cartilage, ligament and other subunit structures of the nasal tip without affecting the inherent structure and function of the nose, and to seek the theoretical basis for the establishment of the nasal tip shaping technology in line with the anatomical and physiological functions.

The nose has a three-dimensional structure located in the centre of the face, and plays an important role in the facial aesthetics. The anatomical structure of the nose, especially the three components-nasal cartilages, muscles, and ligaments are spatially connected, which interact with each other, affecting the size, position, shape, and function of the nasal tip. The author attempts to review the literature on the spatial arrangement and relationship between the nasal cartilage, muscle, and ligament from the anatomical and functional perspective, and summarize their effects on the position, shape, and function of the nasal tip. The purpose is to explore how to bionically adjust and transplant the spatial arrangement of the cartilage, ligament and other subunit structures of the nasal tip without affecting the inherent structure and function of the nose, and to seek the theoretical basis for the establishment of the nasal tip shaping technology in line with the anatomical and physiological functions.

Langerhans-cell histiocytosis (LCH), the most common histiocytic disorder, is a reactive clonal proliferation and accumulation of CD1a+ / CD207+ dendritic cells in inflammatory lesion, characterized by its strong heterogeneity and changeable complexity including apparent inflammation and tumor features, which should be redefined as an inflammatory myeloid neoplasia. Recent research has shown that LCH is the consequence of misguided myeloid differentiation on account of genomic aberrances in the RAS-RAF-MEK-ERK pathway. These gene inhibitors may present more curative effects for the treatment of LCH. With further prospective clinical trial, molecular targeted therapy may combine with or even replace the traditional surgery plus chemotherapy as the first-line regimen in LCH.

Metabolic dysfunction-associated steatotic liver disease (MASLD) is characterized by abnormal lipid deposition in the liver and its mechanism is closely related to insulin resistance, lipid metabolism disorders, oxidative stress, and abnormalities of the gut-liver axis. Currently, there is no effective treatment for this disease. Silent information regulator 2 (SIRT2) is a nicotinamide adenine dinucleotide (NAD⁺)-dependent deacetylase which performs various pathophysiological functions by interacting with different substrates. For example, it is involved in improving metabolic homeostasis, alleviating liver inflammation, promoting liver regeneration, and delaying the progression of MASLD. In this paper, we present a review of the mechanism of action of SIRT2 in MASLD to analyze the potential value of SIRT2 as a therapeutic target in MASLD.

Objective To evaluate the efficacy of endoscopic ultrasonography-guided celiac plexus radiation with iodine-125 (125I) seeds and celiac plexus neurolysis with absolute ethanol for pain relief secondary to advanced pancreatic cancer.Methods A retrospective analysis of 43 patients of advanced pancreatic cancer with moderate to severe abdominal pain in the Department of Gastroenterology,Shanghai Changhai Hospital from January 2017 to April 2018 was performed.20 patients underwent EUS-guided celiac plexus neurolysis (CPN),and 23 patients underwent EUS-guided celiac plexus radiation (CPR) with the implantation of 125I seeds around the celiac ganglia.The postoperative VAS score of abdominal pain,mean analgesic (MS Contin [morphine sulfate]) consumption and complications were compared between the two groups.Results There were no statistically significant differences between the two groups in the sex ratio (male/female,10/10 vs 14/9),average age [(64 ± 11) vs (64 ± 12)],lesion location (head/tail,7/13 vs 8/15] and TNM stage (Ⅲ/Ⅳ,9/11 vs 7/16),and the two groups were comparable.Compared with preoperative ones,the VAS score (3.0 points vs 5.5 points) and morphine dosage (30 mg vs 52.5 mg) were significantly lower in the CPN group one week after operation.In the CPR group,the VAS score (5.0 points vs 6.0 points) and morphine dosage (50 mg vs 55 mg) at 2 weeks after the operation were lower than those before the operation;the VAS scores of 4,8 and 12 weeks after the operation decreased to 3.0 points,and the dosage of morphine decreased to 30 mg,25 mg and 30 mg,respectively.The differences were statistically significant (P＜0.0001).Compared with the CPR group,at 2 weeks postoperatively the CPN group demonstrated a significantly higher decrease of VAS score (3.0 points vs 2.0 points),degree of morphine reduction (30 mg vs 10 mg) and rate of partial pain relief (70.0％ vs 4.3％).However,from 4 to 12 weeks postoperatively,the decrease in VAS score,the decrease in the dosage of MS Contin and the rate of partial pain relief in the CPR group were all significantly higher than those in the CPN group (P ＜ 0.05).There was no complete relief of pain in the two groups.No procedure-related deaths or serious complications were observed and only mild gastrointestinal adverse reactions occurred.Conclusions Two methods can both relieve abdominal pain in patients with advanced pancreatic cancer safely and effectively.CPR takes effect late but has advantages of good extent and long duration of pain relief.

Objective:To understand the output of research and education of clinical key Specialties in Henan Province, to analyze the current situation and existing problems, and to provide scientific evidence and suggestions for the improvement of specialist ability.Methods:Through the questionnaire survey to collect the scientific research data of key specialties from 2015 to 2019, apply Epidata 3.0 to input the data, use SPSS 21.0 software to carry out test and Mann Whitney U test, and carry out a comparative analysis of the national and provincial clinical key specialty discipline leaders, medical talent team, academic, scientific research and education output in Henan Province. Results:Academic literacy and scientific research ability of leaders of national and provincial key clinical specialties in Henan Province are equal. However, there is still a big gap in scientific research and education ability between national and provincial key clinical specialties in Henan Province.Conclusions:The provincial key clinical specialties need to improve the ability of scientific research and education in a more holistic way, further strengthen the medical talents team, and focus on the exchange of high-level academic platform and the cultivation of research talents.

Objective:To evaluate the comprehensive strength of the specialties included in the medical service capacity improvement project of Henan provincial medical and health institutions, analyze the influencing factors, and provide scientific basis for the specialty construction.Methods:A total of 52 specialties were included in the project. According to the content of construction assessment and acceptance, the questionnaire was designed and filled in by the persons in charge of the specialties from the aspects of basic conditions, medical technical team, medical service ability, medical quality, scientific research and teaching ability. TOPSIS method was used to evaluate the comprehensive strength of specialty, and the main influencing factors were analyzed by single factor analysis, Mann-Whitney U test, correlation analysis and multiple stepwise regression analysis. Results:The research and teaching ability of the specialties had the strongest correlation with the comprehensive strength of the specialties. The scientific research and teaching ability was strongly related to the medical service ability. The number of people holding the post of academic institutes at or above provincial level, the number of industry standards or national guidelines, the number of academic conferences hosted at or above the provincial level, the number of postgraduate training, the number of papers published in SCI and core journals were the main influencing factors of scientific research and teaching ability.Conclusions:It is necessary to improve the level of scientific research and teaching in key specialty to promote the improvement of medical service ability. We should pay more attention to the construction of high-level talents, the cultivation of research-oriented talents, the application of new medical technology and original research.

Objective To investigate the application value of contrast-enhanced transrectal ultrasound (CE-TRUS) in differential diagnosis of prostate benign and malignant lesions. Methods A retrospective analysis of patients with prostate lesions detected by CE-TRUS from January 2014 to December 2016 in Southwest Hospital of Third Military Medical University was performed. Seventy-two cases of prostate disease with 88 lesions were confirmed by transrectal prostate biopsy under ultrasound guidance. The age of patients with benign and malignant lesions, serum prostate specific antigen (PSA), and the size of prostate and prostate inner gland were compared by independent sample t test. Pathologic results of transrectal prostate biopsy under ultrasound guidance were used as diagnostic gold standard, and the sensitivity, specificity and accuracy of CE-TRUS in diagnosis of benign and malignant prostate lesions were calculated. Results Sixty- seven lesions in 52 patients were benign prostatic diseases, and 21 lesions in 20 patients were prostate cancer in this study. The size of prostate and prostate inner gland were not different between patients with prostate cancer and benign prostatic diseases [(58.33±34.99) cm3vs (57.14±24.42) cm3, t=0.185, P=0.854; (34.98±19.96) cm3vs (33.89±17.65) cm3, t=0.213, P=0.832]. Most of prostate cancer lesions were in prostate outer gland area (15/21), and contrast-enhanced ultrasound imaging showed contrast enhancement increased mostly in arterial phase and faded faster than the surrounding tissues (16/21). However, most of prostate benign lesions were in prostate inner gland (47/67), and contrast-enhanced ultrasound imaging showed contrast enhancement was mostly equal with the surrounding tissue in arterial phase and faded the same as the surrounding tissues in venous phase (47/67). Pathologic results of transrectal prostate biopsy under ultrasound guidance were used as diagnostic gold standard, the sensitivity of CE-TRUS in diagnosis of benign and malignant prostate lesions was 85.71%, the specificity was 91.04%, and the accuracy was 89.77%. Two lesions were in prostate inner and outer gland border areas in the three missed prostate cancer lesions, and Gleason scores were all medium and high differentiated group. Six prostate benign lesions were diagnosed as malignant lesions, five lesions were confirmed prostate hyperplasia with chronic prostatitis and one was confirmed granulomatous inflammation with coagulation necrosis by transrectal prostate biopsy under ultrasound guidance. Conclusion CE-TRUS can effectively identify prostate benign and malignant lesions, and provides reliable information for accurate diagnosis of prostate cancer.