Objective To explore the clinical efficacy of single unicompartmental knee arthroplasty(UKA)and total knee arthroplasty(TKA)for the treatment of knee osteoarthritis.Methods A total of 21 patients who underwent TKA and 15 who underwent UKA were randomly recruited.Biomechanical tests were performed before surgery and at 6th and 12th month after surgery.A Vicon infrared motion capture system and Kistler three-dimensional force plate were used to simultaneously acquire the kinematic and kinetic data of the patients during stair walking.Results During stair ascent,the peak knee flexion moment in the TKA group was significantly lower than that in the UKA group;the time to peak knee flexion/adduction moment,knee flexion moment impulse,and load rate of the peak knee adduction moment in the UKA group were significantly lower than those in the UKA group.During stair descent,the peak knee extension power in the UKA group was significantly lower before surgery and at 6th month after surgery;the load rate of the peak vertical ground reaction force was significantly higher before surgery and the peak knee extension moment was significantly greater at 6th month after surgery;at 12th month after surgery,there was no significant difference in the biomechanical characteristics during stair ascent and descent.Conclusions The TKA and UKA groups showed similar knee joint function after surgery;however,compared with the UKA group,the TKA group may adopt a different lower extremity biomechanical pattern.The UKA group showed better quadriceps control after surgery and improved postural control during stair descent,whereas the TKA group adopted a conservative stair gait strategy to reduce the knee load.Compared with the peak moment,the time to peak moment and load rate of the peak moment were more sensitive indicators for determining the difference in the knee load.

N 6-methyladenosine (m 6A) modification, as the most prevalent epigenetic modification of RNA, plays a crucial role in the initiation and development of malignancies. Methyltransferase like protein 14 (METTL14) is a major methylase catalyzing m 6A modification and regulating biological processes such as RNA splicing, translation and degradation. Recent studies have demonstrated that METTL14 not only regulates the growth, invasion and metastasis of tumors through various molecular mechanisms, but also is closely correlated with the prognosis of tumor patients and clinical efficacy of anti-tumor therapies. In-depth understanding of the mechanism of METTL14 in breast, digestive system and urinary system tumors is helpful to provide new clinical markers and drug targets for the prevention and treatment of tumors based on m 6A modification.

Objective:To explore the distribution of pelvic lymph node (PLN) metastasis and the correlative dangerous factors in early cervical cancer patients.Methods:The medical records of 508 patients who underwent extensive hysterectomy and lymphadenectomy for International Federation of Gynecology and Obstetrics (FIGO) stage Ⅰb-Ⅱb cervical cancer in Guizhou Provincial People`s Hospital were reviewed retrospectively.Results:There were 278 patients with stage Ⅰb cervical cancer, 204 patients with stage Ⅱa cervical cancer and 26 patients with stage Ⅱb cervical cancer; the positive rate of lymph node metastasis was 16.7%(85/508), and obturator lymph node metastasis was the most common (56.6%); there were 19 patients with bilateral lymph node metastasis, accounting for 22.35%(19/85); lymph node metastasis occurred 104 times (two times for bilateral simultaneous transfer), and jumping lymph node metastasis accounted for 37.5%(39/104); common iliac lymph node metastasis accounted for 18.3%(19/104). The metastasis rate of patients with stage Ⅱa and Ⅱb (including parametrial, lymph node, ovarian and oviduct metastasis) was higher than that of patients with stage Ⅰb, and the odd ratio ( OR) was 2.30 and 2.48 respectively ( P<0.05); the metastasis rate of patients with moderately differentiated tumors was significantly higher than that of patients with well differentiated and poorly differentiated tumors ( P<0.05). There was no significant difference in the positive rate of pelvic lymph node metastasis among patients with different ages and histological types ( P>0.05); the positive rate of pelvic lymph node metastasis in patients with stage Ⅱa and Ⅱb was higher than that in patients with stage Ⅰb with statistically significant difference ( P<0.05); the positive rate of pelvic lymph node metastasis in patients with moderately differentiated tumors was higher than that in patients with well differentiated and poorly differentiated tumors, with statistically significant difference ( P<0.05). Conclusions:Obturator lymph node metastasis is the most common in cervical cancer. The risk of lymph node metastasis is increased in patients with stage Ⅱa or moderately differentiated tumors. Jumping metastasis is also a common way of metastasis, which suggests that standard and complete lymph node resection is an important measure to ensure the curative effect.

Background: Helicobacter pylori (Hp) is closely associated with peptic ulcer, gastric cancer and other gastrointestinal diseases. Eradication therapy is the main approach to prevent and treat Hp-associated diseases, and patient management is crucial for improving the efficacy of eradication therapy. Aims: To explore the effect of whole-course management on medication adherence and reexamination rate of Hp eradication therapy. Methods: Patients who received Hp eradication therapy in the Hp Specialist Clinic of the First Affiliated Hospital of Soochow University from June 2020 to November 2020 were recruited consecutively. One hundred and twelve patients who received eradication therapy between June 2020 and August 2020 were served as the control group, and 112 patients who received eradication therapy between September 2020 and November 2020 were served as the observation group. Patients in control group were informed only the medication method and reexamination time, while patients in observation group were given the whole-course management composed of informing medication method and reexamination time plus following up online by WeChat and reminding the reexamination by WeChat and by phone. Patients in both groups received a 14-day bismuth quadruple therapy, and were told to undergo

Objective: To compare 5-year disease-free survival (DFS) and overall survival (OS) rates of laparoscopic radical hysterectomy (LRH) and abdominal radical hysterectomy (ARH) for stage IB1 and tumor size <2 cm with visible or invisible tumors. Methods: We retrospectively compared the oncological outcomes of 1,484 cervical cancer patients with IB1 and tumor size <2 cm on final pathology, who received ARH (n=899) or LRH (n=585) between January 2004 and December 2016. Patients were divided into visible tumor subgroup (ARH: n=668, LRH: n=444) and invisible tumor subgroup (ARH: n=231, LRH:n=141) according to tumor type. Results: LRH and ARH showed similar 5-year DFS and OS rates (93.3% vs. 93.1%, p=0.997;96.2% vs. 97.5%, p=0.351) in total study population. LRH was not associated with worse 5-year DFS rate (hazard ratio [HR]=0.96; 95% confidence interval [CI]=0.58–1.58; p=0.871) or OS rate (HR=1.37; 95% CI=0.65–2.89; p=0.409) by multivariable analysis. In the visible tumor subgroups, LRH and ARH showed similar 5-year DFS and OS rates (91.9% vs. 91.9%, p=0.933; 95.0% vs. 96.9%, p=0.276), and LRH was not associated with worse 5-year DFS or OS rate (p=0.804, p=0.324). In the invisible tumor subgroups, LRH and ARH also showed similar 5-year DFS and OS rates (97.3% vs. 97.1%, p=0.815; 100% vs. 99.5%, p=0.449), and LRH was not associated with worse 5-year DFS rate (p=0.723). Conclusions Among patients with stage IB1 and tumor size <2 cm, whether the tumor is visible or not, the oncological outcomes of LRH and ARH among cervical cancer patients are comparable. This suggests that LRH may be suitable for stage IB1 and tumor size <2 cm with visible or invisible tumors.

Objective To investigate the effect of resveratrol (RSV) on epithelial-mesenchymal transition of MDA-MB-231 cells by down-regulating POLD1 expression. Methods CCK-8 was used to detect the effect of RSV on the activity of MDA-MB-231 cells. POLD1-OE and POLD1-NC cell lines were constructed by transfecting MDA-MB-231 cells with recombinant lentivirus. Western blot was used to detect the expression of POLD1, E-cadherin, N-cadherin and Vimentin after RSV treatment. Transwell invasion experiment and the scratch test were used to detect the cells invasion and migration abilities of each experimental group. Results RSV could significantly inhibit the survival of MDA-MB-231 cells, reduce the expression of POLD1, N-cadherin and Vimentin, increase the expression of E-cadherin, and inhibit the abilities of cell invasion and migration. Increasing the POLD1 expression could reduce the above-mentioned biological effects of RSV on MDA-MB-231 cells. Conclusion RSV could significantly inhibit the viability and EMT of MDA-MB-231 cells by down-regulating the expression of POLD1.

Stenting for iliac vein stenosis or compression has become a common therapeutic approach in recent years. The antithrombotic therapy after the stent deployment, however, reaches no consensus. Medications strategies and patients' prognoses differ in non-thrombotic, acute thrombotic and chronic thrombotic these three circumstances. Non-thrombotic patients usually possess satisfactory stent patency whatever antithrombotic therapy is used. Anticoagulant is the basic medication for acute thrombotic patients, benefits from additional antiplatelet drug remains to be clarified. In terms of chronic thrombotic patients, their prognoses are unsatisfactory under all antithrombotic therapies. In this review, we outlined the recent progress of antithrombotic therapy after iliac vein stenting, aiming to provide feasible medication plans for each circumstance.
Constriction, Pathologic ; drug therapy ; surgery ; Fibrinolytic Agents ; therapeutic use ; Humans ; Iliac Vein ; surgery ; Stents ; Treatment Outcome ; Vascular Patency

Objective To investigate the correlation of the 1896 and 1899 mutations of hepatitis B virus (HBV)with the conversion of e antigen in serum and the progression of the disease. Methods 238 serum samples from the patients with HBsAg positive for over six months and HBV-DNA copy number > 5.0 × 102 IU/mL were collected,and the sequence analysis was used to analyze the nucleotide sequences of the 1896 and 1899 sites in the pre-C region of HBV. At the same time,the relevant clinical data and the expressions of HBeAg were collected,followed by Spearman correlation analysis and chi square test with SPSS 20.0. Results Both 1896 and 1899 sites in the pre-C region of HBV were mutated,and the base G was A,which was closely related to the expression of e antigen(P<0.05). Both G1896A and G1899A promoted the e antigen serological conversion ,and the e antigen serological conversion of G1899A was higher than that of G1896A. G1899A was associated with HBV related disease progression (correlation coefficient 0.280,P < 0.05),especially with the incurrence of HCC. Conclusions G1896A and G1899A in the pre-C region of HBV can promote the serological conversion of e antigen.

Objective To investigate the cause,prevention methods and curative effect on two different drainage methods of subcutaneous effusion after breast cancer surgery.Methods The clinical data of 68 cases subcutaneous effusion among 2 100 cases underwent breast cancer modified radical surgery in our hospitial were analyzed retrospectively from January 2010 to December 2016.The vacuum sealing drainage was performed in 1 032 cases and wound high negative pressure drainage system was performed in 1068 casess.Both the elastic bandage compresstion dressing didn't used.Results In 2 100 cases,68 cases of subcutaneous effusion occured (3.2％),including longitudinal incision 48 cases and transverse incision 20 cases.Among 1 068 cases of high negative pressure drainagesystem,subcutaneous effusion occured in 36 cases including 28 cases of incisional infection and 8 cases of skin flap necrosis.The extuhation time was 8-36 days,average 12 days.Among 1 032 cases of vacuum sealing drainage,subcutaneous effusion occured in 32 cases including 22 cases of incisional infection,10 cases of skin flap necrosis.The extubation time was 6-12 days,average 8 days.All cases were followed up for 3 months,no subcutaneous effusion and axillary effusion occurred.Conclusions Adequate drainage is the key to prevent subcutaneous effusion.Both vacuum sealing drainage and wound high negative pressure drainage can effectively reduce the occurrence of subcutaneous effusion,however,vacuum sealing drainage is more suitable for wounds with more exudation,larger lacuna and deeper incisions,especially the infected wound and abscess.

Objective To summarize the experience ofmultidisciplinary team (MDT) in diagnosis and treatment of complicated and refractory thyroid tumors.Methods A retrospective review was performed on clinical data of 46 cases with complicated and refractory large thyroid tumors admitted to our hospital from Jan.2010 to Dec.2016.There were 23 cases in MDT group and 23 cases in the control group,respectively.The MDT group received diagnosis and treatment provided by multidisciplinary team during perioperative period whereas the control group received conventional surgery.Results Short-term complications such as trouble breathing and thyroid crisis were not observed in 46 patients after surgery.In the control group,the mean durations were (52±11.5)minutes for anesthesia,(159±38.1) minutes for surgery and (11 ±3.5) days for hospital stay,respectively.After surgery,bleeding occurred in 5 cases,hoarseness in 5 cases,irritating cough when drinking in 7 cases,transient hypocalcemia in 8 cases,permanent hypocalcemia in 6 cases,and neck tracheotomy due to tracheomalacia during surgery in 2 cases.In MDT group,the mean durations were (37±8.5) minutes for anesthesia,(134±28.5) minutes for surgery and (7±1.5) days,respectively.After surgery,bleeding occurred in 0 case,hoarseness in 0 case,irritating cough when drinking in 1 case,transient hypocalcemia in 2 cases,permanent hypocalcemia in 0 case,and neck tracheotomy due to tracheomalacia during surgery in 4 cases.Conclusion Application of multidisciplinary team in diagnosis and treatment of complicated and refractory thyroid tumors can reduce duration of preoperative endotracheal anesthesia as well as surgery,decrease postoperative complications,shorten duration of hospitalization and improve life quality after surgery.