ObjectiveTo observe the intervention effect of Huaiqihuang granules （HQH） on immunoglobulin A vasculitis nephritis （IgAVN） mice and explore the underlying therapeutic mechanism. MethodFifty SPF-grade male Kunming mice were randomly divided into a normal group， an IgAVN model group， a dexamethasone group （2.5 mg·kg^-1·d^-1）， a low-dose HQH group （4 g·kg^-1·d^-1）， and a high-dose HQH group （8 g·kg^-1·d^-1）. The mouse model was established using oral administration of gliadin combined with intravenous injection of India ink. After successful modeling， the mice were euthanized after 4 weeks of gastric gavage according to groups. The 24 h urinary total protein （24 h UTP）， urine β₂-microglobulin （β₂-MG）， serum total protein， albumin， IgA， etc. were detected in each group. Flow cytometry was used to determine the proportion of T helper 17 （Th17） cells in spleen cell suspension. Western blot was employed to detect the expression of adenosine 5'-monophosphate-activated protein kinase α （AMPKα）， phosphorylated AMPKα （p-AMPKα）， acetyl-CoA carboxylase 1 （ACC1）， and phosphorylated ACC1 （p-ACC1） in Th17 cells. Pathological changes in the spleen and kidneys were observed. ResultCompared with the normal group， the IgAVN model group showed significant increases in 24 h UTP， urine β₂-MG， total cholesterol （P<0.05）， serum interleukin-17 （IL-17）， IgA， Th17 proportion in the spleen cell suspension， and IL-17 expression in the spleen tissue （P<0.01）， and significantly decreased serum total protein， albumin， p-AMPKα/AMPKα， and p-ACC1/ACC1 expression of Th17 cells （P<0.01）. Compared with the IgAVN model group， in the 4th week， the 24 h UTP， urine β₂-MG， serum IL-17， IgA levels， and renal IgA deposition were significantly reduced in each treatment group （P<0.01）， and the Th17 proportion and IL-17 expression in spleen tissue were significantly decreased （P<0.05， P<0.01）. Serum albumin levels significantly increased （P<0.05）. Compared with the IgAVN model group， the dexamethasone group and the high-dose HQH group showed increases in serum total protein （P<0.01）， p-AMPKα/AMPKα， and p-ACC1/ACC1 expression of Th17 cells （P<0.05， P<0.01）. The high-dose HQH group showed a significant decrease in total cholesterol level （P<0.05）. Various treatment groups showed different degrees of improvement in spleen and kidney pathological changes. ConclusionHQH may affect Th17 cell differentiation by regulating the AMPK/ACC pathway， correcting immune inflammatory disorders， and exerting therapeutic effects on IgAVN.

Hearing loss is one of the common radiotherapy-induced complications of head and neck tumors, including nasopharyngeal carcinoma. These side reactions can be classified into acute or delayed types, which affect all structures of the auditory organs, resulting in conductive, sensorineural or mixed hearing loss. Up to 40% of patients develop acute middle ear side effects during radical radiotherapy, while approximately 1/3 develop late sensorineural hearing loss. The total radiation dose and tumor site appear to be the most important factors associated with the risk of hearing loss. The mechanisms of conductive and sensorineural hearing impairment are different. New radiotherapy techniques (three-dimensional conformal radiotherapy, intensity modulated radiotherapy, proton therapy) enable better dose distribution, lower dose to non-target organs, and gradually increase the feasibility of protecting normal tissues. The present article illustrates recent progress in radiotherapy-induced hearing loss, specially focusing on the occurrence, the mechanisms and related factors of ear toxicity, detection and diagnosis, and treatment.

Dysphagia is the main complication of chemoradiotherapy for head and neck cancer. Recently, the advancement of multidisciplinary treatment has achieved a higher tumor control rate, but also a higher incidence of late radiation-induced dysphagia in head and neck cancer. Radiation-induced dysphagia leads to prolonged unnatural feeding, nutritional deficiency, weight loss, and also has a major risk for silent aspiration and aspiration pneumonia, which significantly reduces the quality of life of patients. Besides, late radiation-induced dysphagia is the main reason for limiting the intensity of treatment. Therefore, it is of great significance to deeply understand the pathogenesis of radiation-induced dysphagia and actively explore effective prevention and treatment measures to improve the survival rate and quality of life in head and neck cancer. This paper summarizes the pathogenesis, occurrence, risk factors of radiation-induced dysphagia in head and neck cancer, as well as the progress in the measurement and reporting methods, prevention and treatment strategies.

Cardiotoxicity is traditionally regarded as the late toxic side effect of radiotherapy. Classical radiobiology suggests that non-proliferative and highly-differentiated tissues, such as the heart, should exhibit robust resistance to ionizing radiation. However, in-depth analyses of radiation-induced heart disease (RIHD) have discovered that radiation can induce a range of physiological changes in the heart. These changes, which include endothelial dysfunction, inflammation, thrombosis, and cardiac fibrosis, may be significantly accelerated as radiation doses increase. At present, multidisciplinary team treatment modalities have substantially enhanced curative effects for cancer patients. However, the resulting prolongation of survival time exposes a larger patient population to the risks of treatment-related cardiotoxicity, establishing RIHD as a pressing research concern. This article offers a systematic review of recent insights into the incidence of RIHD, the relationship between radiotherapy and RIHD, methods for its detection and diagnosis, as well as its pathogenesis and potential treatment strategies.

Surgery, radiotherapy and chemotherapy are currently the principal modalities for oncological treatment. Approximately 70% of patients with malignant tumors require radiotherapy. However, the damage induced by radiation on normal human tissues remains an unavoidable issue in clinical practice. When radiotherapy is applied to abdominal and pelvic tumors such as liver cancer, colorectal cancer, cervical cancer, and prostate cancer, the anatomical proximity of these organs to the small intestine inevitably leads to some degree of intestinal damage. This type of injury, induced by radiotherapy, is referred as radiation-induced small intestine injury. Clinically, a high incidence of radiation-induced small intestine injury is observed among patients receiving pelvic and abdominal radiotherapy, which not only impacts the quality of life of cancer patients, but also limits the effectiveness of the treatment. This article reviews the research progress in radiation-induced small intestine injury.

Radiotherapy is one of the main treatment methods for malignant tumors, which can cause the radiation damage to normal tissues. Radiation-induced skin injury (RISI) is one of the main adverse reactions caused by radiotherapy. The main clinical manifestations of RISI are dermatitis, ulcer, erosion and necrosis, which seriously affect the quality of life and treatment effect of tumor radiotherapy patients, and even affect the overall survival of patients. The pathological mechanism of RISI is still unclear. Some studies have shown that inflammation and oxidative stress are the main causes of RISI. RISI can be divided into acute and chronic RISI according to the different onset time, and different treatment strategies can be formulated according to the severity of the injury. In this article, clinical manifestations, classification, pathogenesis, prevention and treatment of RISI are comprehensively summarized.

Objective The aim of this study was to investigate the expression of COL5A2 in bladder cancer tissues,and its correlation with clinicopathological features and prognosis. Methods A total of 144 patients with bladder cancer were enrolled in this study. Real-time fluorescence reverse transcription and immunohistochemistry were used to detect the expression of COL5A2 at levels of mRNA and protein in bladder cancer tissues and normal bladder tissues. The relationship between COL5A2 expression and clinico-pathological features and prognosis was analyzed. Results The expression of COL5A2 mRNA in the bladder cancer group was higher than that in the paracancerous group(P<0. 05). The positive rate of COL5A2 in the bladder cancer group was higher than that in the normal bladder tissues(P<0. 05). The expression of COL5A2 protein was not correlated with age( P>0. 05),positively associated with the TMN stage,pathological grade,tumor maximum diameter(≥5 cm),depth of invasion,lymph node metastasis,lymphatic vas-cular infiltration,and recurrence;the difference was statistically significant(P<0. 05). The 3-year survival rate and survival time in the COL5A2 negative group were significantly higher than those in the COL5A2 positive group(P<0. 05). The higher TMN stage,the higher pathological stage,the maximum diameter of the tumor(≥5 cm),the deeper infiltration depth,lymph node metastasis,lymphat-ic vascular infiltration,recurrence,the higher positive expression rate of COL5A2 protein. Conclusion COL5A2 is highly expressed in the bladder cancer tissues, which promotes the development of bladder cancer. Bladder cancer patients with low expression of COL5A2 can obtain a good prognosis.

Objective To investigate the risk factors of perioperative complications of laparoscopic radical distal gastrectomy and influence of body shape on the short-term therapeutic effects.Methods The retrospective case-control study was conducted.The clinicopathological data of 506 patients (328 males and 178 females,average age 60 years with the range of 24-85 years) who underwent laparoscopic radical distal gastrectomy+D2 lymph nodes dissection in the 8 clinical centers between March 2016 and November 2018 were collected,including 143 in the First Affiliated Hospital of Xiamen University,66 in the Affiliated Hospital of Qinghai University,66 in the Second Affiliated Hospital of Wenzhou Medical University,64 in the Zhongshan Hospital of Xiamen University,54 in the Affiliated Hangzhou First people's Hospital of Zhejiang University School of Medicine,48 in the Zhangzhou Affiliated Hospital of Fujian Medical University,35 in the Affiliated Quanzhou First Hospital of Fujian Medical University,30 in the Second Affiliated Hospital of Xiamen Medical College.The maximum thickness of subcutaneous fat at the level of umbilicus (USCF),the maximum vertical distance between the anterior abdominal skin and the back skin at the level of the umbilicus (UAPD),the maximum horizontal distance between the anterior abdominal skin and the back skin at the level of the umbilicus (UTD),the maximum verticaldistance between the anterior abdominal skin and the back skin at the level of the xiphoid bone (XAPD),the maximum horizontal distance between the.anterior abdominal skin and the back skin at the level of the xiphoid bone (XTD),the distance between the anterior abdominal skin and the root of celiac artery (CAD) and the maximum horizontal distance at a right angle to CAD (CATD) were measured using preoperative imaging examinations.Observation indicators:(1) intraoperative and postoperative situations;(2) follow-up situations;(3) risk factors analysis of perioperative complications;(4) influence of body shape related indexes on intraoperative situations and postoperative recovery:① Pearson univariate correlation analysis,② liner regression model analysis.Followup using outpatient examination and telephone interview was performed to detect the postoperative survival and tumor recurrence or metastasis up to December 2018.Measurement data with normal distribution were represented as Mean±SD.Measurement data with skewed distribution were described as M (range).Comparisons of count data were analyzed using the chi-square test.Comparisons of ordinal data were analyzed by Mann-Whitney U nonparametric test.Risk factors of perioperative complications of laparoscopic distal gastrectomy were analyzed by Logistic regression model.Influence of body shape related indexes on intraoperative situations and postoperative recovery was analyzed by Pearson univariate correlation analysis and liner regression model.Results (1) Intraoperative and postoperative situations:all the 506 patients underwent successful laparoscopic distal gastrectomy,including 103 with Billroth Ⅰ anastomosis,140 with Billroth Ⅱ anastomosis,201 with Billroth Ⅱ + Braun anastomosis,62 with Roux-en-Y anastomosis.The operation time,volume of intraoperative blood loss,number of lymph nodes dissected,time to postoperative anal exsufflation,time for initial fluid diet intake,time for initial semi-fluid diet intake and duration of postoperative hospital stay were (233±44)minutes,(102±86)mL,34±13,(3.6±1.5)days,(5.8±3.3)days,(8.3±3.8)days,(12.2±5.7)days respectively in the 506 patients.Of 506 patients,196 were defined as pathological stage Ⅰ,122 were defined as pathological stage Ⅱ and 188 were defined as pathological stage Ⅲ postoperatively.Of 506 patients,93 had 106 times of perioperative complications,including 33 times of pulmonary and upper respiratory infection,12 times of incisional infection,11 times of anastomotic leakage,11 times of abdominal infection,8 times of intestinal obstruction,8 times of gastroplegia,6 times of abdominal hemorrhage,5 times of bacteremia,3 times of anastomotic hemorrhage,3 times of lymph fluid leakage,2 times of pancreatic leakage,1 time of urinary infection,1 time of anatomotic stenosis,1 time of deep venous thrombosis and 1 time of pulmonary embolism;the same patient can merge multiple complications.Eleven patients were in the Clavien-Dindo classification ≥ Ⅲ.(2) Follow-up situations:465 of 506 patients were followed up for 1-32 months with a median time of 12 months.During the follow-up,451 had postoperative survival and 38 had tumor recurrence or metastasis.(3) Risk factors analysis of perioperative complications.① Results of univariate analysis showed that age,body mass index (BMI),preoperative hemoglobin,preoperative serum albumin and XAPD were related factors affecting perioperative complications of laparoscopic distal gastrectomy (x2 =10.289,7.427,5.269,5.481,4.285,P＜ 0.05).② Results of multivariate analysis showed that age,BMI,preoperative serum albumin were independent related factors affecting perioperative complications of laparoscopic distal gastrectomy (odds ratio =1.033,1.118,0.937,95％ interval confidence:1.011-1.057,1.025-1.219,0.887-0.990,P＜0.05).(4) Influence of body shape related indexes on intraoperative situations and postoperative recovery.① Results of Pearson univariate correlation analysis showed correlations between UAPD,XAPD,CAD,CATD and volume of intraoperative blood loss (r=0.107,0.169,0.179,0.106,P＜0.05),between UAPD,XAPD,CAD and the number of lymph nodes dissected (r=-0.137,-0.143,-0.173,P＜0.05),between USCF,XAPD and time to postoperative anal exsufflation (r =0.122,0.109,P＜0.05),between USCF,XAPD,CAD and time for initial fluid diet intake (r=0.132,0.108,0.132,P＜0.05),between USCF,XAPD and duration of postoperative hospital stay (r=0.116,0.100,P＜0.05).② Results of liner regression model analysis showed a positive correlation between CAD and volume of intraoperative blood loss (r =6.776),a negative correlation between CAD and the number of lymph nodes dissected (r =-0.841),with statistically significant differences (t =2.410,-1.992,P＜ 0.05);a positive correlation between USCF and time to postoperative anal exsufflation (r=0.170),between USCF and time for initial fluid diet intake (r=0.365),between USCF and duration of postoperative hospital stay (r=0.636) respectively,with statisticallysignificant differences (t =2.188,1.981,2.107,P＜ 0.05).Conclusions Abdominal shape can influence intraoperative situations and postoperative recovery of laparoscopic distal gastrectomy,but cannot increase risks ofperioperative complications.Age,BMI and preoperative serum albumin are independent related factors affecting perioperative complications of laparoscopic distal gastrectomy.

Objective To investigate the value of bone mineral density and bone resorption markers around the mini-screw implant in the orthodontic treatment.Methods 178 orthodontic patients were prospectively collected.According to the organization condition around the mini-screw implant loaded,all patients were assigned into stable group (n =160) and loose group (n =18).The levels of interleukin-1 β (IL-1 β) and matrix metalloproteinase-9 of the liquid around the mini-screw implant were detected at 1,2 and 3 months after loading.Moreover,the bone miner al density around the mini-screw implant before and after loading were studied as well.Results Compared with the stable group,the loose groups at 1,2 and 3 months after loading got significantly higher levels of IL-1β [(35.48 ± 4.39)pg/mL vs.(29.48 ±3.92)pg/mL,t =3.348,P =0.004;(41.45 ±5.39)pg/mL vs.(26.29 ±4.12)pg/mL,t =6.493,P =0.000;(54.39 ± 12.82) pg/mL vs.(23.58 ± 3.62) pg/mL,t =11.589,P =0.000].Compared with the stable group,the loose group at 1,2 and 3 months after loading got significantly higher levels of MMP-9[(5.68 ± 3.54) ng/mL vs.(1.74 ± 0.88) ng/mL,t =8.496,P =0.000;(6.84 ± 2.82) ng/mL vs.(1.25 ± 0.62) ng/mL,t =9.835,P =0.000;(9.84 ± 4.39) ng/mL vs.(1.21 ± 0.58) ng/mL,t =12.548,P =0.000].Compared with the sta ble group,the loose group got significantly lower levels of bone mineral density of maxillary bones around the miniscrew implant before and at 3 months after loading[(620.48 ±67.82) HU vs.(694.39 ±84.58)HU,t =2.459,P =0.015;(597.39 ± 58.93) HU vs.(693.59 ± 83.29) HU,t =2.909,P =0.008].Conclusion The decrease of bone mineral density around the mini-screw implant is related to the loosening of the mini-screw implant,and IL-1 β and MMP-9 of the surrounding fluid can reflect the peripheral inflammation.

Objective To investigate the effect of metronidazole powder on the prevention of alveolalgia after extraction of mandibular impacted teeth. Methods two groups of mandibular teeth underwent surgical removal treatment, study group for teeth after Metronidazole Tablets will grind it into powder and dexamethasone sodium phosphate filling extraction wound and sutured; the control group were only given mandibular teeth tight control suture. Two groups of patients with postoperative mandibular impacted teeth were treated with oral amoxicillin for 1 weeks and effective follow-up, record the occurrence of dry socket, the data input SPSS software to give the corresponding analysis and conclusions. Results The incidence of dry socket after tooth extraction was 3.45％ in the study group and 20.69％ in the control group. The difference between the 2 groups was statistically significant(P<0.05). Conclusion Application of metronidazole powder of mandibular impacted tooth extraction, can significantly reduce the incidence of alveolalgia, it is worthy of clinical application.