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Banerjee A, Khan SUH, Broadbent S, Bulbul A, Kim KH, Noh S, Looper R, Mastrangelo CH, Kim H. Molecular bridge-mediated ultralow-power gas sensing. Microsyst Nanoeng 2021; 7:27. [PMID: 34567741 PMCID: PMC8433217 DOI: 10.1038/s41378-021-00252-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/14/2020] [Revised: 02/08/2021] [Accepted: 02/11/2021] [Indexed: 05/27/2023]
Abstract
We report the electrical detection of captured gases through measurement of the quantum tunneling characteristics of gas-mediated molecular junctions formed across nanogaps. The gas-sensing nanogap device consists of a pair of vertically stacked gold electrodes separated by an insulating 6 nm spacer (~1.5 nm of sputtered α-Si and ~4.5 nm ALD SiO2), which is notched ~10 nm into the stack between the gold electrodes. The exposed gold surface is functionalized with a self-assembled monolayer (SAM) of conjugated thiol linker molecules. When the device is exposed to a target gas (1,5-diaminopentane), the SAM layer electrostatically captures the target gas molecules, forming a molecular bridge across the nanogap. The gas capture lowers the barrier potential for electron tunneling across the notched edge region, from ~5 eV to ~0.9 eV and establishes additional conducting paths for charge transport between the gold electrodes, leading to a substantial decrease in junction resistance. We demonstrated an output resistance change of >108 times upon exposure to 80 ppm diamine target gas as well as ultralow standby power consumption of <15 pW, confirming electron tunneling through molecular bridges for ultralow-power gas sensing.
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Affiliation(s)
- Aishwaryadev Banerjee
- Department of Electrical and Computer Engineering, University of Utah, Salt Lake City, UT 84112 USA
| | - Shakir-Ul Haque Khan
- Department of Electrical and Computer Engineering, University of Utah, Salt Lake City, UT 84112 USA
| | - Samuel Broadbent
- Department of Chemistry, University of Utah, Salt Lake City, UT 84112 USA
| | - Ashrafuzzaman Bulbul
- Department of Electrical and Computer Engineering, University of Utah, Salt Lake City, UT 84112 USA
| | | | - Seungbeom Noh
- Department of Electrical and Computer Engineering, University of Utah, Salt Lake City, UT 84112 USA
| | - R. Looper
- Department of Chemistry, University of Utah, Salt Lake City, UT 84112 USA
| | - C. H. Mastrangelo
- Department of Electrical and Computer Engineering, University of Utah, Salt Lake City, UT 84112 USA
| | - H. Kim
- Department of Electrical and Computer Engineering, University of Utah, Salt Lake City, UT 84112 USA
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Mastrangelo AS, Karkhanis M, Likhite R, Bulbul A, Kim H, Mastrangelo CH, Hasan N, Ghosh T. A Low-Profile Digital Eye-Tracking Oculometer for Smart Eyeglasses. Conf Human Syst Interact 2018; 2018:10.1109/hsi.2018.8431368. [PMID: 34676133 PMCID: PMC8528137 DOI: 10.1109/hsi.2018.8431368] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Wearable eye tracking devices have broad uses in medicine, psychology, augmented & virtual reality and consumer market research. Most mobile eye trackers available today utilize infrared imaging of the pupil and corneal reflections with video cameras. This tracking method requires sophisticated real-time processing of video signals consuming substantial electrical power. This method is thus unsuitable for light weight wearables such as adaptive smart eyeglasses for correction of presbyopia. In this paper we present a low-profile, low-power (7.7 mJ/sample) digital eye tracker oculometer based on infrared sclera tracking. The system is implemented using eight, 24-bit infrared proximity sensors and synchronous infrared LEDs. The pupil location is determined from 32 reflected pulsed light measurements independent of ambient illumination. The digital oculometer is 3.1 mm thick and weighs ~3 g. The tracker mounts adjacent to the tunable lenses in the smart eyeglasses frame. The eye tracker showed a pointing error of 1.3 degrees rms over a vertical and horizontal range of 30 degrees when tested by an observer.
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Affiliation(s)
- Alexander S Mastrangelo
- Electrical and Computer Engineering Department, University of Utah, Salt Lake City, Utah, USA
| | - Mohit Karkhanis
- Electrical and Computer Engineering Department, University of Utah, Salt Lake City, Utah, USA
| | - Rugved Likhite
- Electrical and Computer Engineering Department, University of Utah, Salt Lake City, Utah, USA
| | - Ashrafuzzaman Bulbul
- Electrical and Computer Engineering Department, University of Utah, Salt Lake City, Utah, USA
| | - Hanseup Kim
- Electrical and Computer Engineering Department, University of Utah, Salt Lake City, Utah, USA
| | - Carlos H Mastrangelo
- Electrical and Computer Engineering Department, University of Utah, Salt Lake City, Utah, USA
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Mustafa A, Bulbul A, Braik T, Mino E, Chouial S, Aboud H, Rashad S, Bautista A, Khorsand M, Dorff T. Association of 25(OH)D3 with outcomes in renal cell carcinoma. Ann Oncol 2017. [DOI: 10.1093/annonc/mdx661.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Rashad S, Bulbul A, Mino E, Bautista A, Mustafa A, Chouial S, Khorsand M. Outcomes of sentinel lymph node biopsy after neoadjuvant chemotherapy. Ann Oncol 2017. [DOI: 10.1093/annonc/mdx655.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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Bulbul A, Mustafa A, Chouial S, Rashad S, Gholam S, Mino E, Aboud H, Khorsand M. Clinical utility of PET/CT and diagnostic laparoscopy in pancreatic cancer staging. Ann Oncol 2017. [DOI: 10.1093/annonc/mdx660.042] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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Chouial S, Mustafa A, Xiu J, Rashad S, Aboud H, Bulbul A. Genomic analysis, biomarker and PDL1 expression in NUT midline carcinoma. Ann Oncol 2017. [DOI: 10.1093/annonc/mdx653.020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Bulbul A, Mino E, Chouial S, Bautista A, Mustafa A, Abboud H, Rashad S, Braik T, Masoud K. The role of FDG-PET/CT in detecting bone marrow involvement in diffuse large b-cell lymphoma. Ann Oncol 2017. [DOI: 10.1093/annonc/mdx373.019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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Bulbul A, Tsao-Wei D, Mino E, Mustafa A, Rashad S, Abboud H, Chouial S, Braik T, Masoud K, Tripathy D. Pathological proliferation score to predict genomic risk categories in early stage breast cancer. Ann Oncol 2017. [DOI: 10.1093/annonc/mdx362.041] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Bulbul A, Mustafa A, Chouial S, Rashad S. Idiopathic thrombocytopenic purpura and autoimmune neutropenia induced by prolonged use of nivolumab in Hodgkin’s lymphoma. Ann Oncol 2017; 28:1675-1676. [DOI: 10.1093/annonc/mdx159] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2017] [Indexed: 01/24/2023] Open
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Bulbul A, Taso-wei D, Rashad S, Groshen S, Siddiqi I, Tripathy D, Liu J, Dake V, Hotlwick C, Griego K, Konda V. Proliferative markers in predicting recurrence risk of breast cancer. Eur J Cancer 2017. [DOI: 10.1016/s0959-8049(17)30135-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Bulbul T, Akosman MS, Yilmaz O, Ulutas E, Bulbul A. Supplementary dietary nitric oxide donor (sodium nitroprusside) or inhibitor (NG-nitro-L-arginine methyl ester) depressed growth performance and ovarian primordial and primary follicles in Japanese quail (Coturnix coturnix japonica) in a dose-dependent manner. Br Poult Sci 2015; 56:113-20. [PMID: 25421145 DOI: 10.1080/00071668.2014.989489] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
1. The aim of the study was to determine the effects of dietary supplementation with sodium nitroprusside (SNP), a nitric oxide (NO) exogenous donor, and N(G)-nitro-L-arginine methyl ester (l-NAME), a NO inhibitor, on growth performance, some biochemical parameters and ovarian primordial and primary follicles of quail. 2. A total of 480 Japanese quail (Coturnix coturnix japonica), one-day-old, including both males and females, were randomly allocated into one control group and 4 treatment groups each consisting of 96 birds. The control group was fed on the basal diet, whereas the experimental groups were fed on the basal diet supplemented with 50 mg SNP/kg, 200 mg SNP/kg, 50 mg L-NAME/kg or 200 mg L-NAME/kg. In the group receiving 200 mg SNP/kg, BW was lower on d 28 and d 42 compared to the control group and body weight gain (BWG) was lower between weeks 2 and 4 compared to the control group. In the same group, BWG and feed consumption were lower compared with the control group. 3. In the group receiving 200 mg L-NAME/kg, BW on d 42 and BWG were lower, whereas feed consumption and FCR was higher than in the control group. 4. In the groups supplemented with SNP at 50 and 200 mg/kg, serum total protein and albumin were higher than the control group; however, serum lipid profile, and liver and kidney enzymes were not affected by supplementation with SNP or l-NAME. 5. The numbers of ovarian primordial and primary follicles were greater in the group fed on the diet supplemented with 200 mg SNP/kg compared with the control group. Supplementation at 200 mg L-NAME/kg diet reduced the number of primary follicles compared to the controls, whereas the diameter of primordial and primary follicles increased. 6. In conclusion, supplementation with SNP and L-NAME depressed quail growth. Furthermore, the increase in NO following dietary supplementation with the NO-donor SNP delayed the growth process from primordial to primary and primary to secondary follicle transition in quail.
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Affiliation(s)
- T Bulbul
- a Department of Animal Nutrition and Nutritional Diseases , University of Afyon Kocatepe , Afyon , Turkey
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Abstract
We report a new proof-of-concept bubble-based gas sensor for a gas chromatography system, which utilizes the unique relationship between the diameters of the produced bubbles with the gas types and mixture ratios as a sensing element. The bubble-based gas sensor consists of gas and liquid channels as well as a nozzle to produce gas bubbles through a micro-structure. It utilizes custom-developed software and an optical camera to statistically analyze the diameters of the produced bubbles in flow. The fabricated gas sensor showed that five types of gases (CO2, He, H2, N2, and CH4) produced (1) unique volumes of 0.44, 0.74, 1.03, 1.28, and 1.42 nL (0%, 68%, 134%, 191%, and 223% higher than that of CO2) and (2) characteristic linear expansion coefficients (slope) of 1.38, 2.93, 3.45, 5.06, and 5.44 nL/(kPa (μL s(-1))(-1)). The gas sensor also demonstrated that (3) different gas mixture ratios of CO2 : N2 (100 : 0, 80 : 20, 50 : 50, 20 : 80 and 0 : 100) generated characteristic bubble diameters of 48.95, 77.99, 71.00, 78.53 and 99.50 μm, resulting in a linear coefficient of 10.26 μm (μL s(-1))(-1). It (4) successfully identified an injection (0.01 μL) of pentane (C5) into a continuous carrier gas stream of helium (He) by monitoring bubble diameters and creating a chromatogram and demonstrated (5) the output stability within only 5.60% variation in 67 tests over a month.
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Affiliation(s)
- Ashrafuzzaman Bulbul
- Electrical and Computer Engineering, University of Utah, Salt Lake City, Utah 84112, USA.
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Albert RA, Bulbul A, Narain R, O'Brien JF, Banks MS. Can 3D Shape be Estimated from Focus Cues Alone? J Vis 2014. [DOI: 10.1167/14.10.732] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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Zannoli M, Albert RA, Bulbul A, Narain R, O'Brien JF, Banks M. Correct blur and accommodation information is a reliable cue to depth ordering. J Vis 2014. [DOI: 10.1167/14.10.138] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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Bulbul A, Bulbul T, Sevimli A, Yilmaz O. The effect of dietary supplementation of nitric oxide donor and inhibitor on nNOS expression in and motility of the small intestine of broilers. Biotech Histochem 2013; 88:258-66. [PMID: 23477594 DOI: 10.3109/10520295.2013.769631] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
We investigated the effect of dietary supplementation of sodium nitroprusside (SNP), a nitric oxide (NO) donor, and N-nitro-L-arginine methyl ester (L-NAME), a NO inhibitor, on neuronal nitric oxide synthase (nNOS) expression in and motility of small intestinum in broilers. A total of 560, one-day-old Ross 308 hybrid mixed sex broiler chicks were divided randomly into one control and seven treatment groups for a 42 day feeding trial including starter phase (0-21 days) and grower phase (22-42 days). The control group was fed a basal diet and the experimental groups were the fed basal diet supplemented with 25, 50, 100 and 200 mg/kg SNP and 25, 50 or 100 mg/kg L-NAME. Ten chickens from each group were sacrificed to collect samples on days 21 and 42. The expression patterns of nNOS immunoreactivity in nerve fibers were determined by immunohistochemistry. In the contractility studies, longitudinal isolated strips of duodenum, jejunum and ileum were treated with 10(-5) M L-arginine and 10(-4) M SNP. Immunohistochemistry revealed that nNOS expression was not detectable in the duodenum or ileum of either the control or experimental groups. On the other hand, nNOS immunoreactivity in the jejunum control group showed a strong reaction on day 21, but the reaction was weak on day 42. nNOS expression clearly was suppressed on day 21 by the diet supplemented with L-NAME, while the diet supplemented with SNP stimulated nNOS expression on day 21. Contractility experiments revealed that spontaneous contractility of isolated strips of duodenum, jejunum and ileum showed no significant difference among groups. Spontaneous contractions of all strips were inhibited by L-arginine and SNP in all groups. The percentage inhibition rate of spontaneous contractions of jejunum application on days 21 and 42 after L-arginine decreased in the group supplemented with 100 mg/kg L-NAME. The percentage inhibition rate on day 21 after SNP application decreased in both groups that received 50 and 100 mg/kg L-NAME. We demonstrated the expression pattern of nNOS in nerve fibers in jejunum of broiler chickens. Contractility studies revealed that the NOS-NO pathway may play a role in smooth muscle contraction of small intestine of chickens. Feeding strategies that supplement NO donor and NO inhibitor can be of physiological importance to small intestine motility owing to alteration of nNOS expression in the jejunum.
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Affiliation(s)
- A Bulbul
- Department of Physiology, Faculty of Veterinary Medicine, University of Afyon Kocatepe, Afyonkarahisar, Turkey.
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Maden M, Ozturk AS, Bulbul A, Avci GE, Yazar E. Acute-phase proteins, oxidative stress and enzyme activities of blood serum and peritoneal fluid in cattle with abomasal displacement. J Vet Intern Med 2012; 26:1470-5. [PMID: 23113812 DOI: 10.1111/j.1939-1676.2012.01018.x] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2011] [Revised: 05/01/2012] [Accepted: 09/05/2012] [Indexed: 11/29/2022] Open
Abstract
BACKGROUND Blood serum and peritoneal fluid acute-phase proteins, oxidative stress indicators, and some enzymes could be used for evaluation of abomasal tissue damage because of displacement in displaced abomasum (DA) cases. OBJECTIVES The aim of this study was to investigate the concentrations of acute-phase proteins, oxidative stress indicators, and activities of enzymes in blood serum and peritoneal fluid in cattle with right displaced abomasum (RDA) and left displaced abomasum (LDA) and in healthy cows. ANIMALS A total of 60 Holstein Friesian cows in early lactation were used, 31 with left and 9 with right displaced abomasum without volvulus diagnosis and no other postpartum disease, and 20 healthy cows as a control. MATERIALS AND METHODS DA diagnosis in dairy cows consisted of physical examination, laboratory, and specific DA tests. Acute-phase proteins, oxidative stress indicators, and enzyme activities were measured in blood serum and peritoneal fluid. RESULTS In the RDA group, serum haptoglobin (HPG), serum amyloid A (SAA), malondialdehyde (MDA), adenosine deaminase (ADA), myeleperoxidase (MPO), aspartate aminotransferase (AST), creatine kinase (CK, creatine kinase-MB (CK-MB), and gamma-glutamyl transferase (GGT) activity increased significantly, and serum HPG, MDA, ADA, and AST concentrations increased significantly in the LDA group (P < .05). Peritoneal fluid HPG, MDA, ADA, MPO, ALP, GGT, and LDH concentrations increased significantly, whereas NO concentrations reduced significantly in the RDA group, and HPG, MDA, ADA, and TP concentrations increased significantly, whereas concentrations of NO reduced significantly in the LDA group (P < .05). CONCLUSIONS AND CLINICAL IMPORTANCE There are acute-phase responses, oxidative stress, and abomasal tissue damage because of displacement in DA cases. Especially, HPG, MDA, ADA, and MPO concentrations can provide specific information to help in understanding these changes.
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Affiliation(s)
- M Maden
- Department of Internal Medicine, Faculty of Veterinary Medicine, Selcuk University, Konya, Turkey.
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Yilmaz O, Całka J, Bukowski R, Zalecki M, Wasowicz K, Jaroszewski J, Markiewicz W, Bulbul A, Ucar M. Nitric oxide in the bovine oviduct: Influence on contractile activity and nitric oxide synthase isoforms localization. Theriogenology 2012; 77:1312-27. [DOI: 10.1016/j.theriogenology.2011.10.036] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2011] [Revised: 10/28/2011] [Accepted: 10/30/2011] [Indexed: 01/22/2023]
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Dorff TB, Schwartz R, Ma Y, Cai J, Bulbul A, Skinner EC, Quinn DI, Danenberg K, Schuckman A. EGFR, TS, and ERCC1 expression in penile squamous cancer (PSC). J Clin Oncol 2011. [DOI: 10.1200/jco.2011.29.7_suppl.219] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
219 Background: PSC is an aggressive disease with devastating consequences. While near-universal EGFR overexpression has been documented, little is known about its clinical implications, and the potential role of KRAS mutations has not been described. In other tumor types, ERCC1 and TS expression are associated with response to platinum and 5FU chemotherapy, but have not yet been evaluated in PSC. Methods: After IRB approval, 28 PSC patients treated at LAC-USC were identified with tumor specimens available. Testing for EGFR, TS, and ERCC1 expression relative to internal standard gene was performed by real-time RT-PCR and correlated with clinical features. Results: The median age was 45 (30-78). There were 2 Black, 1 Asian, 1 White, and 15 Hispanic men; 9 had unspecified race. T stages included 4 Tis, 6 T1, 17 T2, and 9 T3; 11 men had lymph node (LN) involvement. No KRAS mutations were identified. EGFR had the highest relative expression (median 4.65, range 1.6-44.2), followed by TS (median 1.69, range 0.49-4.69); ERCC1 overexpression was rare (median 0.54, range 0.21-1.29). Higher EGFR expression was significantly associated with poor differentiation (median 12.5 compared to 3.6 for moderate/well differentiated tumors) on continuous (p=0.03 by Mann Whitney) and cut-point analysis using >7 (two- sided p=0.03 by Fisher's exact test) but did not correlate with stage. Stage > T2 showed a trend toward higher risk of LN involvement (p=0.06 by chi square). There was no correlation between differentiation and stage, and no significant correlation for ERCC1 or TS with grade or stage. Conclusions: EGFR overexpression is common in PSC and correlates with tumor grade but not stage, suggesting it may be important for disease progression. The absence of KRAS mutations may portend responsiveness to EGFR- targeted therapy based on experience in other tumors. Low ERCC1 as an association with platinum response will be explored in an expanded cohort. No significant financial relationships to disclose.
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Affiliation(s)
- T. B. Dorff
- Norris Comprehensive Cancer Center, Keck School of Medicine of the University of Southern California, Los Angeles, CA; Keck School of Medicine of the University of Southern California, Los Angeles, CA; Los Angeles County and University of Southern California Medical Center, Los Angeles, CA; University of Southern California Institute of Urology, Los Angeles, CA; Response Genetics, Los Angeles, CA
| | - R. Schwartz
- Norris Comprehensive Cancer Center, Keck School of Medicine of the University of Southern California, Los Angeles, CA; Keck School of Medicine of the University of Southern California, Los Angeles, CA; Los Angeles County and University of Southern California Medical Center, Los Angeles, CA; University of Southern California Institute of Urology, Los Angeles, CA; Response Genetics, Los Angeles, CA
| | - Y. Ma
- Norris Comprehensive Cancer Center, Keck School of Medicine of the University of Southern California, Los Angeles, CA; Keck School of Medicine of the University of Southern California, Los Angeles, CA; Los Angeles County and University of Southern California Medical Center, Los Angeles, CA; University of Southern California Institute of Urology, Los Angeles, CA; Response Genetics, Los Angeles, CA
| | - J. Cai
- Norris Comprehensive Cancer Center, Keck School of Medicine of the University of Southern California, Los Angeles, CA; Keck School of Medicine of the University of Southern California, Los Angeles, CA; Los Angeles County and University of Southern California Medical Center, Los Angeles, CA; University of Southern California Institute of Urology, Los Angeles, CA; Response Genetics, Los Angeles, CA
| | - A. Bulbul
- Norris Comprehensive Cancer Center, Keck School of Medicine of the University of Southern California, Los Angeles, CA; Keck School of Medicine of the University of Southern California, Los Angeles, CA; Los Angeles County and University of Southern California Medical Center, Los Angeles, CA; University of Southern California Institute of Urology, Los Angeles, CA; Response Genetics, Los Angeles, CA
| | - E. C. Skinner
- Norris Comprehensive Cancer Center, Keck School of Medicine of the University of Southern California, Los Angeles, CA; Keck School of Medicine of the University of Southern California, Los Angeles, CA; Los Angeles County and University of Southern California Medical Center, Los Angeles, CA; University of Southern California Institute of Urology, Los Angeles, CA; Response Genetics, Los Angeles, CA
| | - D. I. Quinn
- Norris Comprehensive Cancer Center, Keck School of Medicine of the University of Southern California, Los Angeles, CA; Keck School of Medicine of the University of Southern California, Los Angeles, CA; Los Angeles County and University of Southern California Medical Center, Los Angeles, CA; University of Southern California Institute of Urology, Los Angeles, CA; Response Genetics, Los Angeles, CA
| | - K. Danenberg
- Norris Comprehensive Cancer Center, Keck School of Medicine of the University of Southern California, Los Angeles, CA; Keck School of Medicine of the University of Southern California, Los Angeles, CA; Los Angeles County and University of Southern California Medical Center, Los Angeles, CA; University of Southern California Institute of Urology, Los Angeles, CA; Response Genetics, Los Angeles, CA
| | - A. Schuckman
- Norris Comprehensive Cancer Center, Keck School of Medicine of the University of Southern California, Los Angeles, CA; Keck School of Medicine of the University of Southern California, Los Angeles, CA; Los Angeles County and University of Southern California Medical Center, Los Angeles, CA; University of Southern California Institute of Urology, Los Angeles, CA; Response Genetics, Los Angeles, CA
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Okan F, Ozdil A, Bulbul A, Yapici Z, Nuhoglu A. Analgesic effects of skin-to-skin contact and breastfeeding in procedural pain in healthy term neonates. ACTA ACUST UNITED AC 2010; 30:119-28. [PMID: 20522298 DOI: 10.1179/146532810x12703902516121] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
Abstract
OBJECTIVES The effectiveness of skin-to-skin contact to decrease pain from heel-lancing in healthy term neonates and whether breastfeeding in addition to skin-to-skin contact provided a more effective analgesia than skin-to-skin contact alone were investigated. METHODS A randomised, controlled trial was conducted in 107 neonates undergoing heel-lance. Infants were randomly assigned to three groups: (i) being breastfed with skin-to-skin contact (group 1, n=35), (ii) being held in their mother's arms with skin-to-skin contact but no breastfeeding (group 2, n=36), or (iii) lying on the table before, during and after painful stimulus (group 3, n=36). Physiological responses to pain were measured by heart rate and oxygen saturation changes and behavioural responses were measured by duration of crying and grimacing. RESULTS Infants had a mean (SD) birthweight of 3355 (270) g and gestational age of 39.5 (0.6) weeks; at the time of the procedure, mean (SD) postnatal age was 33.1 (5) hours. There was no significant difference between the groups in clinical characteristics and time spent squeezing the heel. Heart rate, oxygen saturation changes and length of crying were significantly reduced in groups 1 and 2 compared with group 3 (p<0.001). No difference was found between group 1 and group 2. Grimacing was less in group 2 than in group 3 (p<0.001). CONCLUSIONS In healthy term neonates, skin-to-skin contact with the mother and breastfeeding with skin-to-skin contact reduce both physiological and behavioural pain response. Breastfeeding in the 1st 2 postnatal days with skin-to-skin contact did not increase the analgesic effect of skin-to-skin contact alone.
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Affiliation(s)
- F Okan
- Department of Pediatrics, Sisli Children's Hospital, Istanbul
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Can E, Bulbul A, Uslu S, Demirin H, Comert S, Bolat F, Nuhoglu A. A case of Seckel syndrome with Tetralogy of Fallot. Genet Couns 2010; 21:49-51. [PMID: 20420029] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
Seckel syndrome, also known as Harper's Syndrome and Virchow-Seckel-Syndrome, was first described by Seckel in 1960, and is a rare (<1:10,000 live births) autosomal recessive trait. The syndrome (OMIM 210600) is a form of primordial dwarfism, characterized by severe intrauterine growth restriction, postnatal dwarfism, severe microcephaly with variable mental retardation, facial anomalies and skeletal abnormalities. Cardiac anomalies have been described in only five case. We report a male newborn with typical findings of Seckel sydrome associated with Tetrology of Fallot. This is the first case reported in concomitance with Tetralogy of Fallot, and might be a new finding of the syndrome. We would like to emphasize that clinicians should perform diagnostic interventions for congenital cardiac defects in Seckel Syndrome.
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Affiliation(s)
- E Can
- Sisli Children Hospital, Department of Pediatrics, Division of Neonatology, Istanbul, Turkey
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Tunc T, Bulbul A, Erdinc K, Sarici SU, Gul D, Ozcan O. The Wiedemann-Rautenstrauch or neonatal progeroid syndrome: report of a patient with hypospadias. Genet Couns 2009; 20:367-371. [PMID: 20162872] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
The Wiedemann-Rautenstrauch or neonatal progeroid syndrome: report of a patient with hypospadias: Wiedemann-Rautenstrauch syndrome is known as a neonatal progeroid syndrome, with only few published case reports. The syndrome is characterized by progeroid appearance (triangular old-looking face with relatively large skull, prominent veins especially of the scalp, sparse scalp hair, and large anterior fontanelle), decreased subcutaneous fat (giving the clinical appearance of prominent veins and muscles), hypotrichosis, macrocephaly, and natal teeth. We report a new additional patient with a new feature of the hypospadias, not previously described, to our knowledge.
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Affiliation(s)
- T Tunc
- Gulhane Military Medical Academy, School of Medicine, Department of Pediatrics, Division of Neonatology, Ankara, Turkey.
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Bulbul A, Yağci A, Altunbaş K, Sevimli A, Celik HA, Karadeniz A, Akdağ E. The role of nitric oxide in the effects of ovarian steroids on spontaneous myometrial contractility in rats. Theriogenology 2007; 68:1156-68. [PMID: 17869333 DOI: 10.1016/j.theriogenology.2007.08.014] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2006] [Revised: 07/26/2007] [Accepted: 08/02/2007] [Indexed: 10/22/2022]
Abstract
Forty ovariectomized rats were apportioned into one control and three experimental groups (n=10 each) to evaluate the role of nitric oxide in the effects of ovarian steroids on spontaneous myometrial contractility in rats. The control group (group Ov) received sesame oil once daily for 10 days, whereas rats in the experimental groups were treated with progesterone (2 mg/(rat day); group P), 17beta-estradiol (10 microg/(rat day); group E2), or progesterone and 17beta-estradiol together (group E2+P). The functionality of the arginine-nitric oxide synthase (NOS)-nitric oxide (NO) pathway in the uterine horns of sacrificed rats was evaluated in an isolated organ bath. L-Arginine, sodium nitroprusside (SNP) and 8-Br-cGMP decreased uterine contractile tension induced by electric field stimulation (EFS) in the Ov, P, and E2+P groups, but not in the E2 group. In addition, L-arginine was ineffective when applied together with a NOS inhibitor, L-nitro-N-arginine (L-NNA). The percentage of contractile inhibition was higher in the Ov and P groups compared to the E2+P group. Immunohistochemical evaluation revealed that expression of neuronal NOS (nNOS), inducible NOS (iNOS), and endothelial NOS (eNOS) in smooth muscles and nerve cells did not differ among the groups. Expression of nNOS and eNOS was strongly evident in the E2 and E2+P groups at both surface and glandular epithelium of the endometrium. iNOS expression was increased in surface epithelium of the E2 and E2+P groups. However, iNOS expression was only increased in glandular epithelial cells of the E2+P group. In conclusion, the L-arginine-NOS-NO pathway inhibits myometrial contractions via cGMP-dependent and -independent mechanisms, and while progesterone maintains the nitric oxide effects, estrogen prevents them. These results suggest that NOS does not mediate the effects of estrogen.
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Affiliation(s)
- A Bulbul
- Department of Physiology, Faculty of Veterinary Medicine, Afyon Kocatepe University, Afyon, Turkey.
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Ahmed W, Beheiri F, El-drini H, Bulbul A. Female infant in Egypt: mortality and child care. Popul Sci 2002:25-39. [PMID: 12339482] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/26/2023]
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