Halogenated 9H-Indeno[1,2-b]Pyrazine-2,3-Dicarbonitrile End Groups Based Asymmetric Non-Fullerene Acceptors for Green Solvent-Processable, Additive-Free, and Stable Organic Solar Cells.

Non-fullerene acceptors (NFAs) significantly enhance photovoltaic performance in organic solar cells (OSCs) using halogenated solvents and additives. However, these solvents are environmentally detrimental and unsuitable for industrial-scale production, and the issue of OSCs' poor long-term stability persists. This report introduces eight asymmetric NFAs (IPCnF-BBO-IC2F, IPCnF-BBO-IC2Cl, IPCnCl-BBO-IC2F, and IPCnCl-BBO-IC2Cl, where n = 1 and 2). These NFAs comprise a 12,13-bis(2-butyloctyl)-3,9-diundecyl-12,13-dihydro-[1,2,5]thiadiazolo[3,4-e]thieno[2'',3'':4',5']thieno[2',3':4,5]pyrrolo[3,2-g]thieno[2',3':4,5]thieno-[3,2-b]indole (BBO) core. One end of the core attaches to a mono- or di-halogenated 9H-indeno[1,2-b]pyrazine-2,3-dicarbonitrile (IPC) end group (IPC1F, IPC1Cl, IPC2F, or IPC2Cl), while the other end connects to a 2-(5,6-dihalo-3-oxo-2,3-dihydro-1H-inden-1-ylidene)malononitrile (IC) end group (IC2F or IC2Cl). The optical and electronic properties of these NFAs can be finely tuned by controlling the number of halogen atoms. Crucially, these NFAs demonstrate excellent compatibility with PM6 even in o-xylene, facilitating the production of additive-free OSCs. The di-halogenated IPC-based NFAs outperform their mono-halogenated counterparts in photovoltaic performance within OSCs. Remarkably, the di-halogenated IPC-based NFAs maintain 94‒98% of their initial PCEs over 2000 h in air without encapsulation, indicating superior long-term device stability. These findings imply that the integration of di-halogenated IPCs in asymmetric NFA design offers a promising route to efficient, stable OSCs manufactured through environmentally friendly processes.

The effect of renal function on the pharmacokinetics and pharmacodynamics of enavogliflozin, a potent and selective sodium-glucose cotransporter-2 inhibitor, in type 2 diabetes.

AIMS: To explore the effect of renal function on the pharmacokinetic (PK) and pharmacodynamic (PD) profile and safety of enavogliflozin, a selective sodium-glucose cotransporter 2 (SGLT2) inhibitor, in patients with type 2 diabetes mellitus (T2DM). METHODS: An open-label, two-part clinical trial was conducted in T2DM patients, stratified by renal function: Group 1, normal renal function; Group 2, mild renal impairment (RI); Group 3, moderate RI; and Group 4, severe RI. In Part A, Groups 2 and 4 received enavogliflozin 0.5 mg once. In Part B, Groups 1 and 3 received enavogliflozin 0.5 mg once daily for 7 days. Serial blood and timed urine samples were collected to analyse the PK and PD characteristics of enavogliflozin. Pearson's correlation coefficients were calculated to assess the correlations between PK or PD parameters and creatinine clearance (CrCL). RESULTS: A total of 21 patients completed the study as planned. The area under the curve (AUC) for enavogliflozin was not significantly correlated with CrCL, although the maximum concentration slightly decreased as renal function decreased. By contrast, daily urinary glucose excretion (UGE) was positively correlated with CrCL after both single- (r = 0.7866, p < 0.0001) and multiple-dose administration (r = 0.6606, p = 0.0438). CONCLUSIONS: Systemic exposure to oral enavogliflozin 0.5 mg was similar among the patients with T2DM regardless of their renal function levels. However, the glucosuric effect of enavogliflozin decreased with RI. Considering the UGE observed and approved therapeutic use of other SGLT2 inhibitors, the efficacy of enavogliflozin with regard to glycaemic control could be explored in patients with mild and moderate RI (estimated glomerular filtration rate ≥30 or ≥45 mL/min/1.73 m2) in a subsequent larger study.

Proteolytic Activity of Silkworm Thorn (Cudrania tricuspidata) Fruit for Enzymatic Hydrolysis of Food Proteins.

This study aimed to isolate the proteolytic fraction from the silkworm thorn fruit (Cudrania tricuspidata) through ethanol precipitation at different ratios, and to determine its proteolytic activity and optimal activity conditions. Furthermore, the hydrolysis characteristics and antioxidant activity of soy protein isolate (SPI) and whey protein concentrate (WPC) hydrolyzates obtained through the enzymatic hydrolysis of freeze-dried silkworm thorn fruit powder (SF) were evaluated. For isolation and partial purification of proteolytic fraction, the water-solubilized fraction of the silkworm thorn fruit was purified through ethanol precipitation at four different ratios of 1:1, 1:2, 1:4, and 1:6 (v/v). The protein recovery rate, caseinolytic activity, protein pattern, and optimal activity (pH, temperature, and inhibitors) of fractional ethanol precipitate obtained from the silkworm thorn fruit (ESF) were evaluated. The proteolytic fraction obtained from silkworm thorn fruit exhibited a major protein band around 65-70 kDa and showed the highest proteolytic activity at a 1:4 ratio of ethanol precipitation (p < 0.05). The optimal activity of the measured enzyme fraction was determined to be at pH 9.0 and 50 °C, and the proteolytic activity of ESF was almost inhibited by phenyl methyl sulphonyl fluoride (PMSF, 2 mM), a serine protease inhibitor. Compared to Alcalase and papain, extensively used as commercial enzymes, the silkworm thorn fruit powder was less effective in hydrolyzing SPI and WPC. Nevertheless, SPI and WPC hydrolyzates mediated with silkworm thorn fruit powder showed even better antioxidant activities than those mediated with Alcalase and papain. Thus, our results show the potential application of silkworm thorn fruit as a novel source of plant protease for producing human-grade protein hydrolyzates.

Amoxicillin for 3 or 5 Days for Chest-Indrawing Pneumonia in Malawian Children.

BACKGROUND: Evidence regarding the appropriate duration of treatment with antibiotic agents in children with pneumonia in low-resource settings in Africa is lacking. METHODS: We conducted a double-blind, randomized, controlled, noninferiority trial in Lilongwe, Malawi, to determine whether treatment with amoxicillin for 3 days is less effective than treatment for 5 days in children with chest-indrawing pneumonia (cough lasting <14 days or difficulty breathing, along with visible indrawing of the chest wall with or without fast breathing for age). Children not infected with human immunodeficiency virus (HIV) who were 2 to 59 months of age and had chest-indrawing pneumonia were randomly assigned to receive amoxicillin twice daily for either 3 days or 5 days. Children were followed for 14 days. The primary outcome was treatment failure by day 6; noninferiority of the 3-day regimen to the 5-day regimen would be shown if the percentage of children with treatment failure in the 3-day group was no more than 1.5 times that in the 5-day group. Prespecified secondary analyses included assessment of treatment failure or relapse by day 14. RESULTS: From March 29, 2016, to April 1, 2019, a total of 3000 children underwent randomization: 1497 children were assigned to the 3-day group, and 1503 to the 5-day group. Among children with day 6 data available, treatment failure had occurred in 5.9% in the 3-day group (85 of 1442 children) and in 5.2% (75 of 1456) in the 5-day group (adjusted difference, 0.7 percentage points; 95% confidence interval [CI], -0.9 to 2.4) - a result that satisfied the criterion for noninferiority of the 3-day regimen to the 5-day regimen. Among children with day 14 data available, 176 of 1411 children (12.5%) in the 3-day group and 154 of 1429 (10.8%) in the 5-day group had had treatment failure by day 6 or relapse by day 14 (between-group difference, 1.7 percentage points; 95% CI, -0.7 to 4.1). The percentage of children with serious adverse events was similar in the two groups (9.8% in the 3-day group and 8.8% in the 5-day group). CONCLUSIONS: In HIV-uninfected Malawian children, treatment with amoxicillin for chest-indrawing pneumonia for 3 days was noninferior to treatment for 5 days. (Funded by the Bill and Melinda Gates Foundation; ClinicalTrials.gov number, NCT02678195.).

Pharmacokinetic and pharmacodynamic interaction of DWP16001, a sodium-glucose cotransporter 2 inhibitor, with gemigliptin and metformin in healthy adults.

AIMS: DWP16001, a novel sodium-glucose cotransporter 2 inhibitor, is under clinical development for the treatment of type 2 diabetes mellitus. This study aimed to explore the pharmacokinetics (PK) and pharmacodynamics interaction of DWP16001 with gemigliptin and metformin. METHODS: A randomized, open-label, 2-sequence, 2-period crossover study was conducted in 34 healthy male subjects. All subjects received a single oral dose of DWP16001 2 mg with and without gemigliptin and metformin (8 days of 50 mg once-daily dose and 1000 mg twice daily dose for gemigliptin and metformin, respectively). Serial blood samples were collected for PK and serum glucose analysis, and timed urine samples were collected to analyse urine glucose excretion (UGE). The PK and pharmacodynamic parameters were analysed by the noncompartmental method. RESULTS: The PK interactions of DWP16001, gemigliptin and metformin were not clinically significant. The geometric mean ratios (with 90% confidence intervals) of coadministration to separate administration for area under the time-concentration curves were 1.04 (1.02-1.06), 1.03 (0.98-1.09) and 1.17 (1.12-1.22), for gemigliptin, metformin and DWP16001 respectively. The UGE induced by DWP16001 was not affected by the coadministration of gemigliptin and metformin. CONCLUSION: The results suggest that the DWP16001 could be added to metformin and gemigliptin combination therapy without dose adjustment.

Pharmacokinetic and pharmacodynamic interaction between DWP16001, an sodium-glucose cotransporter 2 inhibitor and metformin in healthy subjects.

AIMS: DWP16001 is a novel sodium-glucose cotransporter 2 inhibitor for the treatment of type 2 diabetes with selective and sustained sodium-glucose cotransporter 2 inhibition. We aimed to evaluate whether the coadministration of DWP16001 and metformin causes any changes in pharmacokinetics (PK) or pharmacodynamics (PD). METHODS: A randomized, open-label, single- and multiple-dose, 2-sequence, crossover study was conducted in healthy male subjects. Subjects received the following treatments: a single oral dose of DWP16001 (DWP) 2 mg, metformin immediate release 1000 mg (MET) twice daily for 7 days and a single oral dose of DWP and MET at steady-state for metformin (DWP+MET). Serial blood and interval urine were collected for PK and PD analyses. Safety and tolerability profiles were assessed throughout the study. RESULTS: DWP+MET displayed increased peak concentration and area under the concentration-time curve from time 0 to time of the last quantifiable concentration compared with DWP (per standard bioequivalence boundaries, 0.8-1.25); the geometric mean ratios (GMRs) and their 90% confidence intervals (CIs) were 1.22 (1.13-1.31) and 1.09 (1.05-1.14), respectively. DWP+MET and MET showed similar peak concentration and area under the concentration-time curve within a dosing interval at steady state for metformin; the GMRs and 90% CIs were 0.98 (0.90-1.06) and 1.05 (0.98-1.13), respectively. The amount of urinary glucose excretion from time 0 to 144 h was also comparable between DWP+MET and DWP (GMR and 90% CI; 0.99, 0.94-1.05). CONCLUSION: The results suggest that DWP16001 and metformin could be coadministered without clinically relevant PK and PD interactions.

Improving the electrical properties of transparent ZnO-based thin- film transistors using MgO gate dielectric with various oxygen concentrations.

Zinc oxide (ZnO)-based thin-film transistors (TFTs) have attracted increasing attention towards flat-panel displays as alternatives to silicon-based TFTs due to their transparency to visible light. Magnesium oxide (MgO) has a wide bandgap (7.8 eV) and high dielectric constant (k). This leads to the development of TFTs using MgO as a gate oxide layer, which can significantly reduce the operating voltage. However, the electrical properties and dielectric constant of MgO are determined from the percentage of oxygen in MgO. In this study, a MgO gate-oxide was deposited on ZnO by magnetron sputtering at various oxygen concentrations (0%, 66%, and 100%) to fabricate TFTs. With an increase in the oxygen concentration, the oxygen vacancies of MgO were compensated, thereby improving the crystallinity and enhancing the dielectric constant from 6.53 to 12.9 for the oxygen concentrations of 0% and 100%. No pinch-off (saturation) behavior was observed in the TFTs with 0% oxygen; however, the pinch-off voltages were significantly reduced to 17 and 2 V in the TFTs with 66% and 100% oxygen, respectively; hence, the TFT-100 could be operated at a low operating voltage (2 V). With an increase in oxygen from 0% to 100%, the threshold voltage and trap-state density significantly decreased from -159 V and 1.6 × 1018cm-3to -31.4 V and 6.5 × 1016cm-3, respectively. The TFTs with 0% oxygen exhibited a higher field-effect mobility of 12 cm2V-1s-1due to the uncompensated oxygen vacancy in ZnO, which had a higher electron concentration. After introducing oxygen atoms, the field-effect mobility decreased to 0.16 cm2V-1s-1in the TFTs with 66% oxygen, which can be attributed to the compensated oxygen vacancy and lower electron concentration. In contrast, the field-effect mobility increased to 1.88 cm2V-1s-1for the TFTs with 100% oxygen due to the enhanced dielectric constant and crystallinity of MgO.

A preliminary study about the potential risks of the UV-weathered microplastic: The proteome-level changes in the brain in response to polystyrene derived weathered microplastics.

The growing use of plastic materials has resulted in a constant increase in the risk associated with microplastics (MPs). Ultra-violet (UV) light and wind break down modify MPs in the environment into smaller particles known as weathered MPs (WMPs) and these processes increase the risk of MP toxicity. The neurotoxicity of weathered polystyrene-MPs remains unclear. Therefore, it is important to understand the risks posed by WMPs. We evaluated the chemical changes of WMPs generated under laboratory-synchronized environmentally mimetic conditions and compared them with virgin MPs (VMPs). We found that WMP had a rough surface, slight yellow color, reduced molecular weight, and structural alteration compared with those of VMP. Next, 2 µg of ∼100 µm in size of WMP and VMP were orally administered once a day for one week to C57BL/6 male mice. Proteomic analysis revealed that the WMP group had significantly increased activation of immune and neurodegeneration-related pathways compared with that of the VMP group. Consistently, in in vitro experiments, the human brain-derived microglial cell line (HMC-3) also exhibited a more severe inflammatory response to WMP than to VMP. These results show that WMP is a more profound inflammatory factor than VMP. In summary, our findings demonstrate the toxicity of WMPs and provide theoretical insights into their potential risks to biological systems and even humans in the ecosystem.

Comparison of the acid suppression effects between low-dose esomeprazole and famotidine in healthy subjects.

OBJECTIVE: Famotidine, an H2 receptor antagonist (H2RA), is mainly prescribed to alleviate the early symptoms of gastritis. Our aim was to explore the possibilities of low-dose esomeprazole as a treatment of gastritis as well as the pharmacodynamic (PD) properties of esomeprazole and famotidine. MATERIALS AND METHODS: A randomized, multiple-dose, 6-sequence, 3-period crossover study was conducted with a 7-day washout between periods. For each period, the subjects were administered one dose of esomeprazole 10 mg or famotidine 20 mg or esomeprazole 20 mg each day. To evaluate the PDs, the 24-hour gastric pH was recorded after single and multiple doses. The mean percentage of time during which the gastric pH was above 4 was evaluated for PD assessment. To confirm the pharmacokinetic (PK) characteristics of esomeprazole, blood was collected for up to 24 hours after multiple doses. RESULTS: 26 subjects completed the study. Following the multiple doses of esomeprazole 10 mg, esomeprazole 20 mg, and famotidine 20 mg, the mean percentages of time during which the gastric pH was above 4 over the course of 24 hour were 35.77 ± 19.56%, 53.75 ± 20.55%, and 24.48 ± 17.36%, respectively. After multiple doses, the time of peak plasma concentration at steady state (tmax,ss) was 1.00 and 1.25 hours for 10 and 20 mg of esomeprazole, respectively. The geometric mean ratio and its 90% confidence interval of area under the plasma drug concentration-time curve in steady state (AUCT,ss) and maximum concentration of drug in plasma in steady state (Cmax,ss) for esomeprazole 10 mg compared to 20 mg were 0.3654 (0.3381 - 0.3948) and 0.5066 (0.4601 - 0.5579), respectively. CONCLUSION: The PD parameters of esomeprazole 10 mg were comparable to those of famotidine after multiple doses. These findings provide support for further evaluating the use of 10 mg of esomeprazole as a treatment option for gastritis.

Two-Dimensional Stacked Composites of Self-Assembled Alkane Layers and Graphene for Transparent Gas Barrier Films with Low Permeability.

Self-assembled alkane layers are introduced between graphene layers to physically block nanometer size defects in graphene and lateral gas pathways between graphene layers. A well-defined hexatriacontane (HTC) monolayer on graphene could cover nanometer-size defects because of the flexible nature and strong intermolecular van der Waals interactions of alkane, despite the roughness of graphene. In addition, HTC multilayers between graphene layers greatly improve their adhesion. This indicates that HTC multilayers between graphene layers can effectively block the lateral pathway between graphene layers by filling open space with close-packed self-assembled alkanes. By these mechanisms, alternately stacked composites of graphene and self-assembled alkane layers greatly increase the gas-barrier property to a water vapor transmission rate (WVTR) as low as 1.2 × 10-3 g/(m2 day), whereas stacked graphene layers generally show a WVTR < 0.5 g/(m2 day). Furthermore, the self-assembled alkane layers have superior crystallinity and wide bandgap, so they have little effect on the transmittance.

CD133-Src-TAZ signaling stimulates ductal fibrosis following DDC diet-induced liver injury.

Chronic liver injury follows inflammation and liver fibrosis; however, the molecular mechanism underlying fibrosis has not been fully elucidated. In this study, the role of ductal WW domain-containing transcription regulator 1 (WWTR1)/transcriptional coactivator with PDZ-binding motif (TAZ) was investigated after liver injury. Ductal TAZ-knockout (DKO) mice showed decreased liver fibrosis following a Diethyl 1,4-dihydro-2,4,6-trimethyl-3,5-pyridinedicarboxylate (DDC) diet compared to wild-type (WT) mice, as evidenced by decreased expression levels of fibrosis inducers, including connective tissue growth factor (Ctgf)/cellular communication network factor 2 (CCN2), cysteine-rich angiogenic inducer 61 (Cyr61/CCN1), and transforming growth factor beta 1 (Tgfb1), in DKO mice. Similarly, TAZ-knockout (KO) cholangiocyte organoids showed decreased expression of fibrosis inducers. Additionally, the culture supernatant of TAZ-KO cholangiocyte organoids decreased the fibrogenic gene expression in liver stellate cells. Further studies revealed that prominin 1 (PROM1/CD133) stimulated TAZ for fibrosis. After the administration of DDC diet, fibrosis was decreased in CD133-KO (CD133-KO) mice compared to that in WT mice. Similarly, CD133-KO cholangiocyte organoids showed decreased Ctgf, Cyr61, and Tgfb1 expression levels compared to WT cholangiocyte organoids. Mechanistically, CD133 stabilized TAZ via Src activation. Inhibition of Src decreased TAZ levels. Similarly, CD133-knockdown HCT116 cells showed decreased TAZ levels, but reintroduction of active Src recovered the TAZ levels. Taken together, our results suggest that TAZ facilitates liver fibrosis after a DDC diet via the CD133-Src-TAZ axis.

A Phase 1 Study To Evaluate Safety and Pharmacokinetics following Administration of Single and Multiple Doses of the Antistaphylococcal Lysin LSVT-1701 in Healthy Adult Subjects.

Thirty-two healthy male subjects (8 per cohort) were randomized 6:2 to active:placebo. LSVT-1701, an antistaphylococcal lysin, was administered intravenously as a 6-mg/kg single dose and as 1.5, 3, and 4.5 mg/kg twice daily for 4 days. LSVT-1701 exposure increased in a greater than dose proportional manner and did not accumulate. Treatment-emergent adverse events (TEAEs) were predominantly of mild intensity. The most common TEAEs were chills, pyrexia, headache, infusion site events, cough, rhinorrhea, and increases in C-reactive protein. (This study has been registered at ClinicalTrials.gov under identifier NCT03446053.).

Clinical utility of directional eFLOW compared with contrast-enhanced harmonic endoscopic ultrasound for assessing the vascularity of pancreatic and peripancreatic masses.

BACKGROUND: Contrast-enhanced harmonic endoscopic ultrasound (CEH-EUS) can be used for the differential diagnosis of pancreatic lesions by evaluating microvascular circulation and patterns of contrast enhancement. However, routine use of CEH-EUS is limited by its high cost, the lack of contrast agent availability and the absence of expertise with this technique. Directional eFLOW (D-eFLOW) (Aloka Co., Ltd., Tokyo, Japan) was introduced as a new high-definition modality that detects blood flow in microvessels. Because it uses built-in functions, it entails no additional cost and reduces time for examination. The present study compared the usefulness of D-eFLOW and CEH-EUS for differential diagnosis of pancreatic and peripancreatic lesions. METHODS: This retrospective study analyzed 130 patients who underwent EUS and D-eFLOW examinations from January 2016 to March 2020 to evaluate pancreatic and peripancreatic masses. RESULTS: All 130 patients underwent D-eFLOW and CEH-EUS examinations. Histological diagnoses were confirmed in 130 patients by EUS-FNA and/or surgery. D-eFLOW and CEH-EUS showed good correlation in evaluating the vascularity of pancreatic and peripancreatic tumors (Fisher's exact test, p < 0.05). CONCLUSIONS: In evaluating the characteristics of tumorous lesions, vascularity detected by D-eFLOW showed good correlation with enhancement patterns of CEH-EUS. D-eFLOW can be considered a good alternative to CEH-EUS in diagnosing pancreatic and peripancreatic masses.

Efficacy and safety of atezolizumab plus bevacizumab in Korean patients with advanced hepatocellular carcinoma.

BACKGROUND & AIMS: Atezolizumab plus bevacizumab (Ate/Bev) has demonstrated efficacy and safety in patients with advanced hepatocellular carcinoma (HCC) in the phase III trial. Further evaluation is necessary to investigate the safety and efficacy of Ate/Bev in real settings. METHODS: This was a multicentre retrospective analysis. Between May 2020 and February 2021, 138 patients received Ate/Bev as first-line treatment for advanced HCC from 11 institutions. We excluded patients with Child-Pugh B or C and BCLC D stage, and the remaining 121 patients were included in this analysis. RESULTS: According to RECIST 1.1, the objective response and disease control rates were 24.0% and 76.0%. The median follow-up duration was 5.9 months (95% confidence interval [CI], 5.4-6.4), the median progression-free survival (PFS) was 6.5 months (95% CI, 4.1-9.0), and median overall survival (OS) was not reached (95% CI, not available). The most frequent grade 3-4 adverse event was aspartate aminotransferase elevation (10.7%). In the multivariate analyses, AFP increase (P = .037), baseline neutrophil-to-lymphocyte ratio (NLR) ≥ 5 (P = .023), and best response to stable disease or progressive disease (P = .019) were significantly associated with worse PFS. Macrovascular invasion (P = .048) and baseline NLR ≥5 (P < .001) were significantly associated with worse OS. CONCLUSIONS: Ate/Bev showed real-life efficacy and safety in Korean patients with advanced HCC, in line with results from phase III trial. Considering unfavourable survival outcomes of Ate/Bev in patients with elevated NLR, careful assessment of treatment response needs to be performed in this group.

A double-blind, placebo-controlled, single-ascending dose study to evaluate the safety, tolerability, pharmacokinetics, and pharmacodynamics of HM15136, a novel long-acting glucagon analogue, in healthy subjects.

AIM: To evaluate the safety and tolerability, pharmacokinetics, and pharmacodynamics of HM15136, a novel long-acting glucagon analogue under development, in healthy males and females presenting with no childbearing potential. MATERIALS AND METHODS: A randomized, double-blind, placebo-controlled, single-ascending dose study was conducted in 56 subjects who randomly received a single subcutaneous dose of HM15136 or its matching placebo at a ratio of 6:2 at 10, 20, 30, 50, 80, 100, and 120 µg/kg. RESULTS: All adverse events were mild and transient. Neither serious adverse events nor discontinuation as a result of adverse events occurred. The most frequent adverse drug reaction was nausea (5.3%, only in the 100- and 120-µg/kg groups). HM15136, particularly at doses of 50 µg/kg or higher, increased fasting blood glucose, with a maximum increase and area under the curve of 1.5 mmol/L at day 10 (P = .006) and 166.3 day·mmol/L (P = .022) at the dose of 80 µg/kg, while suppressing the secretion of endogenous glucagon, which continued until day 17. HM15136 also significantly reduced gluconeogenic and ketogenic amino acids. Compensatory changes in endogenous insulin and incretin hormones by HM15136 were not apparent. HM15136 was slowly but steadily absorbed and reached a peak concentration at 46-68 hours after a single subcutaneous injection. HM15136 was eliminated with a terminal phase half-life of 77.1-101.1 hours. CONCLUSIONS: A single subcutaneous dose of HM15136 at 10-120 µg/kg was safe and well tolerated. The long half-life of HM15136, coupled with an increase in blood glucose for ~2 weeks, may warrant a weekly dosing regimen.

Dose-dependent glucosuria of DWP16001, a novel selective sodium-glucose cotransporter-2 inhibitor, in healthy subjects.

AIMS: DWP16001 is a novel sodium-glucose cotransporter-2 inhibitor under development for the treatment of type 2 diabetes mellitus. This study was conducted to evaluate the pharmacokinetics, pharmacodynamics and safety of DWP16001 after single and multiple doses in healthy subjects. METHODS: A randomized, double-blind, placebo- and active-controlled, single- and multiple-dose study was conducted. Twelve subjects in each dose group received a single dose (0.2, 0.5, 1.0, 2.0 or 5.0 mg) or multiple doses (0.1, 0.3, 0.5, 1.0 or 2.0 mg once daily for 15 consecutive days) of DWP16001, dapagliflozin 10 mg or placebo at a ratio of 8:2:2. Serial blood and interval urine samples were collected for the pharmacokinetic and pharmacodynamic analyses. The safety and tolerability of DWP16001 were also assessed. RESULTS: A dose-dependent increase in the urinary glucose excretion was observed after a single dose, and the steady state urinary glucose excretion was 50-60 g/d after multiple doses in the dose range of 0.3-2.0 mg. DWP16001 was rapidly absorbed with the time to peak plasma concentration of 1.0-3.0 hours, and it exhibited a mean elimination half-life of 13-29 hours. The systemic exposure to DWP16001 increased proportionally with multiple dose administrations in the range of 0.1-2.0 mg. DWP16001 was well tolerated in all dose groups. CONCLUSION: DWP16001 induced glucosuria in a dose-dependent manner, and systemic exposure was observed after multiple doses. DWP16001 was well tolerated in single oral doses of up to 5.0 mg and in multiple oral doses of up to 2.0 mg.

Characterizing acute and chronic complications among patients with diabetes mellitus in community health centers.

Context: Diabetes mellitus affects about 10% of the world's population and can lead to serious complications, which reduce life quality and expectancy. People with low income have higher risk of diabetes complications than those with high income, but data on the trends of diabetes complications in underserved populations are scarce. Community health centers (CHCs) serve millions of patients in the United States regardless of their health insurance status and are an ideal setting for assessing the rate of diabetes complications in underserved populations. Objectives: To describe diabetes-related acute and chronic complications among patients served by CHCs. Study Design: Retrospective cohort study of electronic health record data from the ADVANCE clinical research network. Population studied: Patients with diabetes between ages 19 and 64 (excluding pregnant women) and ≥1 primary care ambulatory CHC visit in 2017 (N=85,442). Outcome Measures: Rates and type of diabetes-related acute and chronic complications recorded in 2017. Results: The incidence of acute complications among patients with diabetes in 2017 was 14%. Patients experiencing acute diabetes-related complications had on average 1.8 complications (range 1-33). The most common acute complications were infections (58.3%), abnormal blood glucose or related metabolic abnormalities (20.5%), and strokes or transient neurological deficits (6.8%). Patients with acute complications were proportionally more likely to be female, non-Hispanic white, have Medicaid insurance, out-of-control diabetes, a prescription for insulin, a diagnosis of substance use disorder, and co-occurring physical or mental conditions. For chronic complications, the prevalence in 2017 was 77% among patients with diabetes. Patients experiencing chronic diabetes-related complications had on average 2.3 complications (range 1-19). The most common chronic complications were cardiovascular disease (33.9%), endocrine/metabolic symptoms (22.8%), and neurological symptoms (13.0%). Patients with chronic complications were proportionally more likely to be male, non-Hispanic black, have health insurance, obesity, substance use disorder, longer period with diabetes diagnosis, and co-occurring conditions. Conclusions: The vast majority of patients with diabetes receiving care in CHCs had chronic complications. These findings are concerning, as diabetes-related complications are associated with greater healthcare utilization and patient morbidity.

Multifunctional-high resolution imaging plate based on hydrophilic graphene for digital pathology.

In the present study, we showed that hydrophilic graphene can serve as an ideal imaging plate for biological specimens. Graphene being a single-atom-thick semi-metal with low secondary electron emission, array tomography analysis of serial sections of biological specimens on a graphene substrate showed excellent image quality with improvedz-axis resolution, without including any conductive surface coatings. However, the hydrophobic nature of graphene makes the placement of biological specimens difficult; graphene functionalized with polydimethylsiloxane oligomer was fabricated using a simple soft lithography technique and then processed with oxygen plasma to provide hydrophilic graphene with minimal damage to graphene. High-quality scanning electron microscopy images of biological specimens free from charging effects or distortion were obtained, and the optical transparency of graphene enabled fluorescence imaging of the specimen; high-resolution correlated electron and light microscopy analysis of the specimen became possible with the hydrophilic graphene plate.

Prognostic implication of serum AFP in patients with hepatocellular carcinoma treated with regorafenib.

Background: This multicenter study investigated the predictive value of baseline AFP and on-treatment AFP response for survival in hepatocellular carcinoma (HCC) patients with regorafenib. Materials & methods: A total of 578 patients with HCC treated with regorafenib from 12 institutions in South Korea and Italy were included. Baseline AFP (cutoff, 400 ng/ml) and AFP response (20% reduction from baseline) were analyzed for overall survival (OS) and progression-free survival (PFS). Results: Baseline AFP below 400 ng/ml was a significant factor that was independently associated with longer OS and PFS. AFP response was also a significant factor independently associated with longer OS and PFS. Conclusion: Baseline AFP and AFP response may be used as prognostic factors for survival in HCC treated with regorafenib.

Regorafenib is standard second-line therapy for patients with hepatocellular carcinoma (HCC) who show failure to sorafenib treatment, but there is no reliable factor to predict survival. In this multicenter, retrospective study with patients from South Korea and Italy, we have found that both baseline AFP level and on-treatment AFP response have independent predictive value for survival in patients with HCC under regorafenib treatment. We observed similar results when the patients were divided according to their nationality (South Korea vs Italy), despite the fact that the baseline characteristics of the patients from the two cohorts were significantly different.

Salvage multiple burr hole surgery in patients with Moyamoya disease: efficacy evaluation using probabilistic independent component analysis of dynamic susceptibility contrast perfusion MRI.

PURPOSE: Multiple burr hole surgery is considered to be an option for achieving indirect revascularization in patients with ischemic Moyamoya disease (MMD). We aimed to investigate the efficacy of stand-alone multiple burr hole surgery for salvage revascularization in patients with MMD by assessing the hemodynamic changes via normalized time-to-peak (nTTP) analysis and independent component analysis (ICA) of preoperative and postoperative dynamic susceptibility contrast (DSC) perfusion MRI data. METHODS: The DSC perfusion MRI data of 25 hemispheres from 21 patients with MMD, who underwent multiple burr hole surgery for salvage revascularization due to persistent or recurrent symptoms after primary revascularization with modified encephaloduroarteriosynangiosis (mEDAS), were analyzed. The nTTP, which was measured using the region of interests covering the entire surgical hemisphere, was compared between the preoperative and postoperative images. ICA was used to compare the relative arterial and venous components of the surgical hemispheres between the respective preoperative and postoperative images. RESULTS: The median postoperative nTTP (1.80 s) was significantly shorter than the median preoperative nTTP (4.10 s) (P < 0.001). The postoperative relative arterial component of the surgical hemisphere (median: 0.04) was significantly higher than the preoperative relative arterial component (median: - 0.02, P < 0.001). In contrast, the postoperative relative venous component of the surgical hemisphere (median: - 0.05) was significantly lower than the preoperative value (median: 0.05, P < 0.001). CONCLUSION: The improvement in cerebral perfusion parameters observed on postoperative DSC perfusion MRI demonstrated that stand-alone multiple burr hole surgery could be a favorable salvage revascularization technique after mEDAS failure in patients with ischemic MMD.