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05). The average medial and lateral tibial slopes for female patients were 10.7° ± 3.8° and 8.8° ± 3.8°, respectively, while the average medial and lateral tibial slopes for male patients were 8.9° ± 4.8° and 7.9° ± 4.7°, respectively. The medial and overall PTS were significantly greater in female patients than in male patients (P  less then  0.05). The results showed a gender difference in PTS and that medial PTS was greater than lateral PTS. These findings have clinical relevance in knee reconstructive surgery for determining ideal placement of the posterior slope tibial component. Surgeons should be aware of variability and gender differences in the tibial slope of patients undergoing TKA.INTRODUCTION/OBJECTIVES Anti-dense fine speckled 70 (DFS70) autoantibodies were reported to be more prevalent in healthy individuals than those with autoimmune diseases such as systemic lupus erythematosus (SLE). We determined anti-DFS70 autoantibody prevalence in a Latin American cohort of patients with SLE and healthy individuals. METHODS This study included 127 individuals with anti-nuclear antibodies (ANAs; > 1160) suggesting the presence of anti-DFS70, including 64 patients with SLE and 63 healthy controls. The anti-DFS70 autoantibodies were determined by immunoadsorption using NOVA Lite® HEp-2 Select kit with DAPI. Negative fluorescence after adsorption with the DFS70 antigen indicated anti-DFS70 autoantibody positivity. RESULTS The presence of anti-DFS70 autoantibodies was confirmed by indirect immunofluorescence in 21 (33.3%) healthy controls and 8 (12.5%) patients with SLE (p = 0.005). Among the anti-DFS70-positive patients with SLE, the most frequent compromise was renal involvement in six cases (75%), 4 patients (37.5%) were positive for anti-Sm, which was the most frequently associated antibody, and one patient (12.5%) was positive for anti-DNA. CONCLUSIONS Anti-DFS70 autoantibodies might be considered a biomarker to differentiate patients with SLE from ANA-positive individuals without autoimmune diseases. KEY POINTS • In a Latin American cohort, the anti-DFS70 was higher in individuals without autoimmune diseases compared with that in patients with SLE.• The anti-DFS70 might have utility as a biomarker of exclusion in patients with non-specific clinical signs of AARDs.The orally available novel small molecule SHetA2 is the lead sulfur-containing heteroarotinoid that selectively inhibits cancer cells over normal cells, and is currently under clinical development for anticancer treatment and cancer prevention. The objective of this study was to assess and characterize the tissue distribution of SHetA2 in tumor-bearing mice by developing a physiologically based pharmacokinetic (PBPK) model. An orthotopic SKOV3 ovarian cancer xenograft mouse model was used to most accurately mimic the ovarian cancer tumor microenvironment in the peritoneal cavity. SHetA2 concentrations in plasma and 14 different tissues were measured at various time points after a single intravenous dose of 10 mg/kg and oral dose of 60 mg/kg, and these data were used to develop a whole-body PBPK model. SHetA2 exhibited a multi-exponential plasma concentration decline with an elimination half-life of 4.5 h. Rapid and extensive tissue distribution, which was best described by a perfusion rate-limited model, was observed with the tissue-to-plasma partition coefficients (kp = 1.4-21.2). The PBPK modeling estimated the systemic clearance (76.4 mL/h) from circulation as a main elimination pathway of SHetA2. It also indicated that the amount absorbed into intestine was the major determining factor for the oral bioavailability (22.3%), while the first-pass loss from liver and intestine contributed minimally ( less then  1%). Our results provide an insight into SHetA2 tissue distribution characteristics. The developed PBPK model can be used to predict the drug exposure at tumors or local sites of action for different dosing regimens and scaled up to humans to correlate with efficacy.BACKGROUND To investigate feasibility of laparoscopic abdominoperineal resection with pelvic peritoneum closure (LAPR-PPC) for lower rectal cancer. 3-deazaneplanocin A in vitro METHODS LAPR-PPC has been used for lower rectal cancer in our institution since 2014. In this study, we retrospectively analyzed the data from 86 patients who underwent LAPR-PPC and compared with the data from 96 patients who underwent laparoscopic APR without PPC (LAPR) from January 2013 to December 2018. RESULTS The rate of perineal surgical site infection (SSI) (18.75% (18/96) vs. 5.81% (5/86), p 4 weeks) perineal healing (12.50% (12/96) vs. 3.49% (3/86), p = 0.027), ileus (7.29% (7/96) vs 1.16% (1/86), p = 0.044), and postoperative perineal hernia (PPH, 5.21% (5/96) vs. 0% (0/86), p = 0.032) were significantly lower in LAPR-PPC group than LAPR group. The patients in LAPR-PPC group had shorter hospitalization time (21.32 ± 11.95 days vs. 13.93 ± 11.51 days, p less then 0.01). CONCLUSIONS PPC procedure enabled the reduction in perineal wound complications, ileus, PPH, and consequently shortened hospitalization time. LAPR-PPC is beneficial for the patients with lower rectal cancer.BACKGROUND There has been an increase in sleeve gastrectomy (SG) procedures being performed worldwide, and a paralleled rise in prevalence of gastric sleeve stenosis (GSS). Symptoms include dysphagia, reflux, and obstructive symptoms. Upper gastrointestinal series (UGIS) is commonly performed in the diagnostic algorithm prior to referral for endoscopic dilation; however, little is known about its utility in making a diagnosis. Our aim was to evaluate positive predictive value (PPV) and negative predictive value (NPV) of UGIS in detection of GSS. METHODS We performed a retrospective analysis of a prospectively collected database at a tertiary center for patients referred with nausea/vomiting or obstructive symptoms following SG between 2017 and 2019. All patients underwent upper endoscopy (EGD) for evaluation of GSS. Serial balloon dilations were performed for GSS with increasing balloon size and/or filling pressure until symptom resolution or referral for surgical revision. Primary outcomes were PPV and NPV for UGIS in predicting GSS.
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