The Expression Patterns of FAM83H and PANX2 Are Associated With Shorter Survival of Clear Cell Renal Cell Carcinoma Patients

FAM83H is primarily known for its role in amelogenesis; however, recent reports suggest FAM83H might be involved in tumorigenesis. Although the studies of FAM83H in kidney cancer are limited, a search of the public database shows a significant association between FAM83H and pannexin-2 (PANX2) in clear cell renal cell carcinomas (CCRCCs). Therefore, we evaluated the clinicopathological significance of the immunohistochemical expression of FAM83H and PANX2 in 199 CCRCC patients. The expression of FAM83H and PANX2 were significantly associated with each other. In univariate analysis, individual, and co-expression pattern of FAM83H and PANX2 was significantly associated with shorter overall survival (OS) and relapse-free survival (RFS) of CCRCC patients: nuclear expression of FAM83H (OS; P < 0.001, RFS; P < 0.001), cytoplasmic expression of FAM83H (OS; P < 0.001, RFS; P < 0.001), nuclear expression of PANX2 (OS; P < 0.001, RFS; P < 0.001), cytoplasmic expression of PANX2 (OS; P < 0.001, RFS; P < 0.001), co-expression pattern of nuclear FAM83H and nuclear PANX2 (OS; P < 0.001, RFS; P < 0.001). In multivariate analysis, nuclear expression of FAM83H (OS; P < 0.001, RFS; P = 0.003) and the co-expression pattern of nuclear FAM83H and PANX2 (OS; P < 0.001, RFS; P < 0.001) were independent indicators of shorter survival of CCRCC patients. Cytoplasmic expression of FAM83H was associated with shorter RFS (P = 0.030) in multivariate analysis. In Caki-1 and Caki-2 CCRCC cells, knock-down of FAM83H decreased PANX2 expression and cell proliferation, and overexpression of FAM83H increased PANX2 expression and cell proliferation. These results suggest that FAM83H and PANX2 might be involved in the progression of CCRCC in a co-operative manner, and their expression might be used as novel prognostic indicators for CCRCC patients

Clinical features of adolescents with suicide attempt and the factors associated with their outcomes: poisoning versus non-poisoning

Purpose Methods for suicide attempt are largely divided into poisoning and non-poisoning, which differ in clinical features and severity. We aimed to investigate the clinical features of adolescents with suicide attempt and factors associated with poor outcomes from the 2 methods. Methods A retrospective study was conducted on adolescents (10-18 years) who visited the emergency department after suicide attempt from 2011 through 2018. The adolescents were divided into the poisoning and non-poisoning groups. We analyzed the differences of clinical features and outcomes between the 2 groups. Poor outcomes were defined as hospitalization to the intensive care unit or death. Factors associated with poor outcomes were investigated using multivariable logistic regression. Results Of 4,335 adolescents in total, 2,134 (49.2%) were categorized as the poisoning group. In this group, the adolescents with poor outcomes used acetaminophen most frequently (26.5%), followed by sedative or antipsychotics (22.3%). In the non-poisoning group, those with the outcomes used fall from height (73.2%) most commonly, followed by hanging (21.0%). The factors associated with the outcomes were age (for increment of 1 year; odds ratio, 1.11; 95% confidence interval, 1.02-1.22) in the poisoning group, and being boys (1.34; 1.03-1.73) and non-use of alcohols (2.87; 1.73-4.74) in the non-poisoning group. Conclusion In adolescents who used poisoning for suicide attempt, increasing age is associated with poor outcomes. The outcomes are associated with being boys and non-use of alcohols in those who used non-poisoning methods

Moxifloxacin: Clinically compatible contrast agent for multiphoton imaging

Multiphoton microscopy (MPM) is a nonlinear fluorescence microscopic technique widely used for cellular imaging of thick tissues and live animals in biological studies. However, MPM application to human tissues is limited by weak endogenous fluorescence in tissue and cytotoxicity of exogenous probes. Herein, we describe the applications of moxifloxacin, an FDA-approved antibiotic, as a cell-labeling agent for MPM. Moxifloxacin has bright intrinsic multiphoton fluorescence, good tissue penetration and high intracellular concentration. MPM with moxifloxacin was demonstrated in various cell lines, and animal tissues of cornea, skin, small intestine and bladder. Clinical application is promising since imaging based on moxifloxacin labeling could be 10 times faster than imaging based on endogenous fluorescence.David H. Koch Institute for Integrative Cancer Research at MIT (Bridge Initiative

Staged Surgery for Chronic Primary Aortoduodenal Fistula in a Septic Patient

Aortoenteric fistula is one of the most challenging problems that confront the vascular surgeons. Controversy remains over the optimal treatment because of the continued publication of series with high mortality, amputation, and aortic disruption rates. A positive preoperative blood culture is the best predictor of mortality with increased amputation rates due to infection of the extra-anatomic bypass. Therefore, in selected cases with sepsis, a prudent management protocol is required. We report a 68-yr-old male presenting with a chronic primary aortoduodenal fistula extensively involving the duodenum and Gram-negative sepsis. We planned a staged operation. Initially, an emergency laparotomy and control of the aorta allowed stabilization of the patient, identification of the fistula, and direct in situ placement of the prosthetic graft followed by an en bloc resection of the aneurysm and the surrounding structures. After he recovered from sepsis and had been stabilized, a staged extra-anatomic bypass followed by transabdominal removal of the temporarily placed graft was done. This management plan will allow the highest success rate and may be a prudent management protocol for these difficult cases

Nepmucin, a novel HEV sialomucin, mediates L-selectin–dependent lymphocyte rolling and promotes lymphocyte adhesion under flow

Lymphocyte trafficking to lymph nodes (LNs) is initiated by the interaction between lymphocyte L-selectin and certain sialomucins, collectively termed peripheral node addressin (PNAd), carrying specific carbohydrates expressed by LN high endothelial venules (HEVs). Here, we identified a novel HEV-associated sialomucin, nepmucin (mucin not expressed in Peyer's patches [PPs]), that is expressed in LN HEVs but not detectable in PP HEVs at the protein level. Unlike conventional sialomucins, nepmucin contains a single V-type immunoglobulin (Ig) domain and a mucin-like domain. Using materials affinity-purified from LN lysates with soluble L-selectin, we found that two higher molecular weight species of nepmucin (75 and 95 kD) were decorated with oligosaccharides that bind L-selectin as well as an HEV-specific MECA-79 monoclonal antibody. Electron microscopic analysis showed that nepmucin accumulates in the extended luminal microvillus processes of LN HEVs. Upon appropriate glycosylation, nepmucin supported lymphocyte rolling via its mucin-like domain under physiological flow conditions. Furthermore, unlike most other sialomucins, nepmucin bound lymphocytes via its Ig domain, apparently independently of lymphocyte function–associated antigen 1 and very late antigen 4, and promoted shear-resistant lymphocyte binding in combination with intercellular adhesion molecule 1. Collectively, these results suggest that nepmucin may serve as a dual-functioning PNAd in LN HEVs, mediating both lymphocyte rolling and binding via different functional domains

Should HLA-B*5701 Screening Be Performed in Every Ethnic Group before Starting Abacavir?

Human leukocyte antigen allele (HLA)-B*5701 is associated with abacavir hypersensitivity. However, the carriage rate of HLA-B*5701 has rarely been studied in Asians. In 534 Korean patients with human immunodeficiency virus infection, HLA-B*5701 status was determined by polymerase chain reaction with HLA-B*5701-specific primers. No patients had the HLA-B*5701 allele (95% confidence interval, 0%-0.7%). This explains the paucity of immunologically confirmed cases of abacavir hypersensitivity in Koreans.Saag M, 2008, CLIN INFECT DIS, V46, P1111, DOI 10.1086/529382Mallal S, 2008, NEW ENGL J MED, V358, P568*PAN ANT GUID AD A, 2008, GUID US ANT AG HIV 1Waters LJ, 2007, AIDS, V21, P2533Sun HY, 2007, J ANTIMICROB CHEMOTH, V60, P599, DOI 10.1093/jac/dkm243Rauch A, 2006, CLIN INFECT DIS, V43, P99Phillips EJ, 2006, CLIN INFECT DIS, V43, P103Martin AM, 2005, TISSUE ANTIGENS, V65, P571, DOI 10.1111/j.1399-0039.2005.00401.xLee KW, 2005, TISSUE ANTIGENS, V65, P437, DOI 10.1111/j.1399-0039.2005.00386.xMiddleton D, 2004, TISSUE ANTIGENS, V63, P555Phillips EJ, 2002, AIDS, V16, P2223Saito S, 2000, TISSUE ANTIGENS, V56, P522Park MH, 1999, TISSUE ANTIGENS, V53, P3861

Triplet host engineering for triplet exciton management in phosphorescent organic light-emitting diodes

The device performances of green phosphorescent organic light-emitting diodes with a triplet mixed host emitting layer were correlated with the energy levels and composition of the host materials. Two hole-transport-type host materials, (4,4-N,N -dicarbazole)biphenyl (CBP) and 4,4 ,4 - tris(N-carbazolyl)triphenylamine (TCTA), were combined with two electron-transport-type host materials, 1,3,5-tris(N-phenylbenzimidazole-2-yl)benzene (TPBI) and PH1. The maximum quantum efficiency was obtained in the 5:5 mixed host in the case of TCTA:TPBI and TCTA:PH1, while CBP:PH1 showed the best performances in the 9:1 mixed host. The quantum efficiency of the green mixed host devices was improved by more than 50% compared with that of the corresponding single host devices.Grant No. RTI04-01-02 from the Regional Technology Innovation Program of the Ministry of Commerce, Industry and Energy (MOCIE