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Joseph EA, Bowers KD, Marcus R, Aryal B, Schiffman SC, Wagner PL, Chalikonda S, Bartlett DL, Allen CJ. Assessing the long-term priorities of pancreaticoduodenectomy survivors. HPB (Oxford) 2024; 26:703-710. [PMID: 38443235 DOI: 10.1016/j.hpb.2024.02.011] [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] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/19/2023] [Revised: 12/13/2023] [Accepted: 02/23/2024] [Indexed: 03/07/2024]
Abstract
BACKGROUND This study assessed the long-term quality of life (QOL) and priorities of pancreaticoduodenectomy (PD) survivors. METHODS Survivors were surveyed via internet-based support groups. The relative importance of longevity, experience, costs, and QOL were assessed. RESULTS The PD cohort (n = 247, 35%) was 60 ± 12 years, 71% female, and 93% white. With moderate agreement, patients ranked survival most important, followed by functional and emotional well-being; costs and experience were least important (W = 35.7%, p < 0.001). Well-being improved throughout survivorship (P-QOL: 39 ± 12 at ≤3 mo vs 43 ± 12 at >10 y, p = 0.170; M-QOL: 38 ± 13 at ≤3 mo vs 44 ± 16 at >10 y; p = 0.015) but remained below the general population (p < 0.001). PD patients with benign diagnoses ranked functional independence as most important (2.00 ± 1.13 vs 2.63 ± 1.19, p < 0.001, W = 41.1%); PD patients with malignant diagnoses regarded overall survival most important (2.10 ± 1.20 vs 1.82 ± 1.22, p < 0.16, W = 35.1%). The mean rank order of priorities remained concordant between short-term (<1 year) and long-term (>5 years) survivors. CONCLUSION PD survivors experience long-term mental and physical health impairments, underscoring the importance of functional and emotional support. Survivors place paramount importance on overall survival, functional independence, and emotional well-being. Cancer survivors prioritize longevity, while survivors of chronic benign conditions prioritize functional independence.
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Affiliation(s)
- Edward A Joseph
- Allegheny Health Network Singer Research Institute, Pittsburgh, PA, USA
| | - Kara D Bowers
- Institute of Surgery, Division of Surgical Oncology, Allegheny Health Network Cancer Institute, Pittsburgh, PA, USA
| | - Rebecca Marcus
- Institute of Surgery, Division of Surgical Oncology, Allegheny Health Network Cancer Institute, Pittsburgh, PA, USA
| | - Bibek Aryal
- Allegheny Health Network Singer Research Institute, Pittsburgh, PA, USA
| | - Suzanne C Schiffman
- Institute of Surgery, Division of Surgical Oncology, Allegheny Health Network Cancer Institute, Pittsburgh, PA, USA
| | - Patrick L Wagner
- Institute of Surgery, Division of Surgical Oncology, Allegheny Health Network Cancer Institute, Pittsburgh, PA, USA
| | - Sricharan Chalikonda
- Institute of Surgery, Division of Surgical Oncology, Allegheny Health Network Cancer Institute, Pittsburgh, PA, USA
| | - David L Bartlett
- Cancer Institute, Allegheny Health Network Cancer Institute, Pittsburgh, PA, USA
| | - Casey J Allen
- Institute of Surgery, Division of Surgical Oncology, Allegheny Health Network Cancer Institute, Pittsburgh, PA, USA.
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2
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Aryal B, Bizhanova Z, Joseph EA, Yin Y, Wagner PL, Dalton E, LaFramboise WA, Bartlett DL, Allen CJ. Navigating Precision Oncology: Insights from an Integrated Clinical Data and Biobank Repository Initiative across a Network Cancer Program. Cancers (Basel) 2024; 16:760. [PMID: 38398150 PMCID: PMC10886699 DOI: 10.3390/cancers16040760] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2024] [Revised: 02/03/2024] [Accepted: 02/07/2024] [Indexed: 02/25/2024] Open
Abstract
Advancing cancer treatment relies on the rapid translation of new scientific discoveries to patient care. To facilitate this, an oncology biobank and data repository program, also referred to as the "Moonshot" program, was launched in 2021 within the Integrated Network Cancer Program of the Allegheny Health Network. A clinical data program (CDP) and biospecimen repository were established, and patient data and blood and tissue samples have been collected prospectively. To date, the study has accrued 2920 patients, predominantly female (61%) and Caucasian (90%), with a mean age of 64 ± 13 years. The most common cancer sites were the endometrium/uterus (12%), lung/bronchus (12%), breast (11%), and colon/rectum (11%). Of patients diagnosed with cancer, 34% were diagnosed at stage I, 25% at stage II, 26% at stage III, and 15% at stage IV. The CDP is designed to support our initiative in advancing personalized cancer research by providing a comprehensive array of patient data, encompassing demographic characteristics, diagnostic details, and treatment responses. The "Moonshot" initiative aims to predict therapy responses and clinical outcomes through cancer-related biomarkers. The CDP facilitates this initiative by fostering data sharing, enabling comparative analyses, and informing the development of novel diagnostic and therapeutic methods.
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Affiliation(s)
- Bibek Aryal
- Allegheny Singer Research Institute, Allegheny Health Network, Pittsburgh, PA 15212, USA; (B.A.); (Z.B.); (E.A.J.); (Y.Y.)
| | - Zhadyra Bizhanova
- Allegheny Singer Research Institute, Allegheny Health Network, Pittsburgh, PA 15212, USA; (B.A.); (Z.B.); (E.A.J.); (Y.Y.)
| | - Edward A. Joseph
- Allegheny Singer Research Institute, Allegheny Health Network, Pittsburgh, PA 15212, USA; (B.A.); (Z.B.); (E.A.J.); (Y.Y.)
| | - Yue Yin
- Allegheny Singer Research Institute, Allegheny Health Network, Pittsburgh, PA 15212, USA; (B.A.); (Z.B.); (E.A.J.); (Y.Y.)
| | - Patrick L. Wagner
- Division of Surgical Oncology, Institute of Surgery, Allegheny Health Network, Pittsburgh, PA 15212, USA;
| | | | | | - David L. Bartlett
- Allegheny Health Network Cancer Institute, Pittsburgh, PA 15212, USA;
| | - Casey J. Allen
- Division of Surgical Oncology, Institute of Surgery, Allegheny Health Network, Pittsburgh, PA 15212, USA;
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3
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Aryal B, Xia J, Hu Z, Stumpe M, Tsering T, Liu J, Huynh J, Fukao Y, Glöckner N, Huang HY, Sáncho-Andrés G, Pakula K, Ziegler J, Gorzolka K, Zwiewka M, Nodzynski T, Harter K, Sánchez-Rodríguez C, Jasiński M, Rosahl S, Geisler MM. An LRR receptor kinase controls ABC transporter substrate preferences during plant growth-defense decisions. Curr Biol 2023; 33:2008-2023.e8. [PMID: 37146609 DOI: 10.1016/j.cub.2023.04.029] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2022] [Revised: 02/27/2023] [Accepted: 04/13/2023] [Indexed: 05/07/2023]
Abstract
The exporter of the auxin precursor indole-3-butyric acid (IBA), ABCG36/PDR8/PEN3, from the model plant Arabidopsis has recently been proposed to also function in the transport of the phytoalexin camalexin. Based on these bonafide substrates, it has been suggested that ABCG36 functions at the interface between growth and defense. Here, we provide evidence that ABCG36 catalyzes the direct, ATP-dependent export of camalexin across the plasma membrane. We identify the leucine-rich repeat receptor kinase, QIAN SHOU KINASE1 (QSK1), as a functional kinase that physically interacts with and phosphorylates ABCG36. Phosphorylation of ABCG36 by QSK1 unilaterally represses IBA export, allowing camalexin export by ABCG36 conferring pathogen resistance. As a consequence, phospho-dead mutants of ABCG36, as well as qsk1 and abcg36 alleles, are hypersensitive to infection with the root pathogen Fusarium oxysporum, caused by elevated fungal progression. Our findings indicate a direct regulatory circuit between a receptor kinase and an ABC transporter that functions to control transporter substrate preference during plant growth and defense balance decisions.
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Affiliation(s)
- Bibek Aryal
- Department of Biology, University of Fribourg, 1700 Fribourg, Switzerland
| | - Jian Xia
- Department of Biology, University of Fribourg, 1700 Fribourg, Switzerland
| | - Zehan Hu
- Department of Biology, University of Fribourg, 1700 Fribourg, Switzerland
| | - Michael Stumpe
- Department of Biology, University of Fribourg, 1700 Fribourg, Switzerland
| | - Tashi Tsering
- Department of Biology, University of Fribourg, 1700 Fribourg, Switzerland
| | - Jie Liu
- Department of Biology, University of Fribourg, 1700 Fribourg, Switzerland
| | - John Huynh
- Department of Biology, University of Fribourg, 1700 Fribourg, Switzerland
| | - Yoichiro Fukao
- College of Life Sciences, Ritsumeikan University, Shiga 525-8577, Japan
| | - Nina Glöckner
- Zentrum für Molekularbiologie der Pflanzen, Pflanzenphysiologie, Universität Tübingen, Auf der Morgenstelle 32, 72076 Tübingen, Germany
| | - Hsin-Yao Huang
- Department of Biology, ETH Zurich, Universitätstrasse 2, 8092 Zurich, Switzerland
| | - Gloria Sáncho-Andrés
- Department of Biology, ETH Zurich, Universitätstrasse 2, 8092 Zurich, Switzerland
| | - Konrad Pakula
- Department of Plant Molecular Physiology, Institute of Bioorganic Chemistry, Polish Academy of Sciences, Z. Noskowskiego 12/14, 61-704 Poznań, Poland; NanoBioMedical Centre, Adam Mickiewicz University, Wszechnicy Piastowskiej 3, 61-614 Poznań, Poland
| | - Joerg Ziegler
- Department Molecular Signal Processing, Leibniz Institute of Plant Biochemistry, Weinberg 3, 06120 Halle (Saale), Germany
| | - Karin Gorzolka
- Department Biochemistry of Plant Interactions, Leibniz Institute of Plant Biochemistry, Weinberg 3, 06120 Halle (Saale), Germany
| | - Marta Zwiewka
- Mendel Centre for Plant Genomics and Proteomics Masaryk University, CEITEC MU Kamenice 5, Building A26, 625 00 Brno, Czech Republic
| | - Tomasz Nodzynski
- Mendel Centre for Plant Genomics and Proteomics Masaryk University, CEITEC MU Kamenice 5, Building A26, 625 00 Brno, Czech Republic
| | - Klaus Harter
- Zentrum für Molekularbiologie der Pflanzen, Pflanzenphysiologie, Universität Tübingen, Auf der Morgenstelle 32, 72076 Tübingen, Germany
| | | | - Michał Jasiński
- Department of Plant Molecular Physiology, Institute of Bioorganic Chemistry, Polish Academy of Sciences, Z. Noskowskiego 12/14, 61-704 Poznań, Poland; Department of Biochemistry and Biotechnology, Poznan University of Life Sciences, Dojazd 11, 60-632 Poznań, Poland
| | - Sabine Rosahl
- Department Biochemistry of Plant Interactions, Leibniz Institute of Plant Biochemistry, Weinberg 3, 06120 Halle (Saale), Germany
| | - Markus M Geisler
- Department of Biology, University of Fribourg, 1700 Fribourg, Switzerland.
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Ma Y, Jonsson K, Aryal B, De Veylder L, Hamant O, Bhalerao RP. Endoreplication mediates cell size control via mechanochemical signaling from cell wall. Sci Adv 2022; 8:eabq2047. [PMID: 36490331 PMCID: PMC9733919 DOI: 10.1126/sciadv.abq2047] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/24/2022] [Accepted: 11/02/2022] [Indexed: 05/26/2023]
Abstract
Endoreplication is an evolutionarily conserved mechanism for increasing nuclear DNA content (ploidy). Ploidy frequently scales with final cell and organ size, suggesting a key role for endoreplication in these processes. However, exceptions exist, and, consequently, the endoreplication-size nexus remains enigmatic. Here, we show that prolonged tissue folding at the apical hook in Arabidopsis requires endoreplication asymmetry under the control of an auxin gradient. We identify a molecular pathway linking endoreplication levels to cell size through cell wall remodeling and stiffness modulation. We find that endoreplication is not only permissive for growth: Endoreplication reduction enhances wall stiffening, actively reducing cell size. The cell wall integrity kinase THESEUS plays a key role in this feedback loop. Our data thus explain the nonlinearity between ploidy levels and size while also providing a molecular mechanism linking mechanochemical signaling with endoreplication-mediated dynamic control of cell growth.
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Affiliation(s)
- Yuan Ma
- Umeå Plant Science Centre, Department of Forest Genetics and Plant Physiology, Swedish University of Agricultural Sciences, 90187 Umeå, Sweden
| | - Kristoffer Jonsson
- IRBV, Department of Biological Sciences, University of Montreal, 4101 Sherbrooke Est, Montreal H1X 2B2, QC, Canada
| | - Bibek Aryal
- Umeå Plant Science Centre, Department of Forest Genetics and Plant Physiology, Swedish University of Agricultural Sciences, 90187 Umeå, Sweden
| | - Lieven De Veylder
- Department of Plant Biotechnology and Bioinformatics, Ghent University, B-9052 Ghent, Belgium
- VIB Center for Plant Systems Biology, B-9052 Ghent, Belgium
| | - Olivier Hamant
- Laboratoire Reproduction et Developpement des Plantes, Univ Lyon, ENS de Lyon, UCB Lyon 1, CNRS, INRA, 69364 Lyon, France
| | - Rishikesh P. Bhalerao
- Umeå Plant Science Centre, Department of Forest Genetics and Plant Physiology, Swedish University of Agricultural Sciences, 90187 Umeå, Sweden
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Bishokarma S, Thapa U, Thapa M, Singh AK, Gurung S, Aryal B, Maharjan AM, Lakshmipathy G. Dysnatremia in Traumatic Brain Injury and its Association with Outcome. Kathmandu Univ Med J (KUMJ) 2022; 20:155-160. [PMID: 37017158] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/06/2023]
Abstract
Background Traumatic brain injury on its own results in significant mortality and morbidity but it also contributes to complications that manifest as dysnatremia in the majority of cases. Objective The objective of this study is to assess the association of hyponatremia and hypernatremia with the severity of traumatic brain injury and its impact on mortality. Method This is a retrospective, descriptive, and analytic study conducted during a 1-year period from March 2018 to March 2019. The study population was selected from the patients presenting to the emergency department with TBI in the Upendra Devkota Memorial National Institute of Neurological and Allied Sciences, Bansbari, Kathmandu, Nepal. All the patients that fulfilled the inclusion criteria of age were enrolled in the study. Patients with known renal disease due to the higher incidence of electrolyte disbalance were excluded. Association of outcome with hyponatremia and hypernatremia were sought using chi-square, fisher exact test and independent t test using SPSS ver 20. Result Over a period of 1 year, 367 patients with traumatic brain injuries were treated in our hospital. Hyponatremia was seen among 55 patients (14.9%) and hypernatremia was seen among 22 patients (5.99%). The age range of patients included in the study was 16 to 87 with a mean age of 37.96 ± 16.512 years. The male to female ratio was calculated as 3.2:1. Mild, moderate, and severe head injuries were 286 (77.9%), 37 (10.1%), and 44 (12%) respectively. Surgical intervention was performed among 77(21%) individuals. Our series showed an association between the severity of traumatic brain injury and hyponatremia however didn't show an association between the severity of traumatic brain injury and the development of hypernatremia. Conclusion We concluded that the severity of head injury is associated with severity of hyponatremia but not with severity of hypernatremia. Similarly, a strong association existed between the severity of hypernatremia and outcome of patients. However, such association was not seen with hyponatremia.
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Affiliation(s)
- S Bishokarma
- Department of Neurosurgery, Upendra Devkota Memorial National Institute of Neurological and Allied Science, Bansbari, Kathmandu, Nepal
| | - U Thapa
- Department of Neurosurgery, Upendra Devkota Memorial National Institute of Neurological and Allied Science, Bansbari, Kathmandu, Nepal
| | - M Thapa
- Department of Neurology, Upendra Devkota Memorial National Institute of Neurological and Allied Science, Bansbari, Kathmandu, Nepal
| | - A K Singh
- Department of Neurosurgery, Upendra Devkota Memorial National Institute of Neurological and Allied Science, Bansbari, Kathmandu, Nepal
| | - S Gurung
- Department of Neurosurgery, Upendra Devkota Memorial National Institute of Neurological and Allied Science, Bansbari, Kathmandu, Nepal
| | - B Aryal
- Department of Neurosurgery, Upendra Devkota Memorial National Institute of Neurological and Allied Science, Bansbari, Kathmandu, Nepal
| | - A Ms Maharjan
- Department of Neurology, Upendra Devkota Memorial National Institute of Neurological and Allied Science, Bansbari, Kathmandu, Nepal
| | - G Lakshmipathy
- Department of Neurosurgery, Upendra Devkota Memorial National Institute of Neurological and Allied Science, Bansbari, Kathmandu, Nepal
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6
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Patel N, Amgai B, Chakraborty S, Hajra A, Ashish K, Patel Z, Aryal B, Aronow W, Singh A. Effect of thrombocytopenia in patients with infective endocarditis: an insight from the National Inpatient Sample database. Eur Heart J 2021. [DOI: 10.1093/eurheartj/ehab724.1726] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Introduction
Infective endocarditis (IE) is one of the feared diseases in septic patients, and incidences are rising due to the intravenous drug abuse epidemic. Sepsis causes an escalation of the platelet destructions leading to thrombocytopenia (1). Few independent hospital-based studies have proposed increase mortality with thrombocytopenia in patients with IE (2–5). We aim to evaluate the significance of thrombocytopenia in IE subjects from the national inpatient sample (NIS) database.
Method
We analyzed the NIS database from Jan-2016 to Dec-2018 using Stata 16.0. NIS is the largest publicly available all-payer inpatient care database in the United States, containing data on more than seven million hospital stays per year. We identified patients with IE with or without thrombocytopenia using ICD-10 codes. The primary outcome of interest was in-hospital mortality comparison. We adjusted potential confounders (age, sex, diabetes, hypertension, etc.) with multivariate logistic regression analysis. Further analysis was done after balancing the population co-morbidity using a Greedy propensity match for accuracy.
Results
A total of 174,495 subjects were included in this study with a diagnosis of IE. Among these individuals, 33,285 patients had a concurrent diagnosis of thrombocytopenia. The mean ages were 53±19.5 years for the thrombocytopenia group and 55±19.8 years for others. Females were equally represented in both cohorts. There were 4,945 (14.86%) vs 2,835 (2.01%) mortalities reported in with and without thrombocytopenia group respectively. After propensity matching, there was a pronounced increase in mortality [Odds ratio (OR): 1.93 (1.72 – 2.15), p-value: <0.001] in the group with thrombocytopenia comparing to others. Complications such as Major bleeding requiring blood transfusion [OR: 1.45 (1.35–1.57)], acute myocardial infarction [OR: 1.56 (1.35–1.70)], complete heart block [OR: 1.44 (1.16–1.53)], cardiac arrest [OR: 1.44 (1.25–1.72)], acute respiratory failure [OR: 1.51 (1.39–1.73)] and pressor support requirement [(OR: 1.73 (1.57–2.01)] were notably higher in the cohort of thrombocytopenia with statistically significant p-value (<0.001). The difference in length of stay between both cohorts after propensity match wasn't statistically significant.
Conclusion
In conclusion, IE patients with thrombocytopenia have higher incidences of in-patient mortality and poor outcomes than cohort without thrombocytopenia. Some of the adverse consequences could be temporally explained by complications related to underlying thrombocytopenia. Further investigations are needed to delineate the outcome in this group of subjects.
Funding Acknowledgement
Type of funding sources: None.
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Affiliation(s)
- N Patel
- Interfaith Medical Center, Internal Medicine, New York, United States of America
| | - B Amgai
- Geisinger Community Medical Center, Internal Medicine, Scranton, United States of America
| | - S Chakraborty
- Miami Valley Hospital, Ohio, United States of America
| | - A Hajra
- Jacobi Medical Center, Albert Einstein College of Medicine, Bronx, New York, United States of America
| | - K Ashish
- Crozer-Chester Medical Center, Internal Medicine, Upland, United States of America
| | - Z Patel
- AMC MET medical college, Ahmedabad, India
| | - B Aryal
- Interfaith Medical Center, Internal Medicine, New York, United States of America
| | - W Aronow
- Westchester Medical Center, Director of Cardiology Research, Valhalla, United States of America
| | - A Singh
- Geisinger Community Medical Center, Internal Medicine, Scranton, United States of America
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Patel N, Amgai B, Chakraborty S, Hajra A, Aryal B, Patel Z, Ashish K, Reddy M, Aronow W, Khalid M. Gender based outcome of IABP implantation in patients with acute coronary syndrome and cardiogenic shock: a national inpatient sample database analysis. Eur Heart J 2021. [DOI: 10.1093/eurheartj/ehab724.1536] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Background
Intra-Aortic Balloon counter-pulsation is frequently used as a circulatory support device in patients requiring hemodynamic support - in cardiogenic shock and in patients at risk of hemodynamic decompensation during a high-risk coronary intervention. Impact of IABP in this patient population has been variable. Certain studies have shown a beneficial effect of IABP on selected populations having acute coronary syndrome with cardiogenic shock (1–3). Our objective was to compare the outcomes based on gender in the ACS population with cardiogenic shock and IABP placement.
Methods
We analyzed the National Inpatient Sample database from Oct-2015 to Dec-2017 released under Healthcare Cost utilization Project in the USA using Stata 16.0. The population was identified using respective ICD-10 codes. We excluded the population with sudden cardiac arrest, pulmonary embolism, and patients with anatomical post-MI complications. Multivariate logistic regression analysis was done to determine the difference in outcomes based on gender using clinically relevant variables. Later, propensity-matched cohort analysis was performed based on the regression variables.
Results
Of 36, 990 patients who met our inclusion criteria 25,670 (69%) were male and 11,320 (31%) were female. The average age for male and female populations was 66±11 and 69±12 years. Femnales were more likely to have higher Charlson co-morbidity index three or above. We found higher mortality in the female population [3,146 (27.79%)] compared to male [5,884 (22.92%)] in univariate analyses. Propensity-matched multivariate regression analysis showed no difference [OR: 1.06 (0.91–1.22) with P-value: 0.482] in mortality after adjusting for clinically relevant variables. Subgroup analysis in STEMI and NSTEMI populations did not show a difference. The average hospital stay was similar in both cohorts, with the male having a higher cost per stay. We found no difference in most of the complications included in our study except for higher coronary artery dissection [OR: 2.98 (1.73–5.13), P-value: <0.001] and lower rates of AKI [OR: 0.72 (0.63–0.83), P-value: <0.001], AKI requiring hemodialysis [OR: 0.74 (0.56–0.97), P-value:0.031] and ventricular tachycardia [OR: 0.73 (0.64–0.84), P-value: <0.001] in the female population.
Conclusion
The inpatient population of ACS with Cardiogenic shock and IABP insertion showed no significant difference in mortality between males and females which was valid for subgroup analysis of NSTEMI and STEMI groups. Complications such as coronary artery dissection were higher, whereas AKI, AKI requiring hemodialysis, and ventricular tachycardias, were lower in females than males.
Funding Acknowledgement
Type of funding sources: None.
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Affiliation(s)
- N Patel
- Interfaith Medical Center, Internal Medicine, New York, United States of America
| | - B Amgai
- Geisinger Community Medical Center, Internal Medicine, Scranton, United States of America
| | - S Chakraborty
- Miami Valley Hospital, Ohio, United States of America
| | - A Hajra
- Jacobi Medical Center, Albert Einstein College of Medicine, New York, United States of America
| | - B Aryal
- Interfaith Medical Center, Internal Medicine, New York, United States of America
| | - Z Patel
- AMC MET medical college, Ahmedabad, India
| | - K Ashish
- Crozer-Chester Medical Center, Internal Medicine, Upland, United States of America
| | - M Reddy
- University of Kansas Medical Center, Division Chief, Cardiac Electrophysiology, Kansas City, United States of America
| | - W Aronow
- Westchester Medical Center, Director of Cardiology Research, Valhalla, United States of America
| | - M Khalid
- Maimonides Medical Center, New York, United States of America
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8
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Velasquez SM, Guo X, Gallemi M, Aryal B, Venhuizen P, Barbez E, Dünser KA, Darino M, Pĕnčík A, Novák O, Kalyna M, Mouille G, Benková E, P. Bhalerao R, Mravec J, Kleine-Vehn J. Xyloglucan Remodeling Defines Auxin-Dependent Differential Tissue Expansion in Plants. Int J Mol Sci 2021; 22:9222. [PMID: 34502129 PMCID: PMC8430841 DOI: 10.3390/ijms22179222] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2021] [Revised: 08/20/2021] [Accepted: 08/24/2021] [Indexed: 12/13/2022] Open
Abstract
Size control is a fundamental question in biology, showing incremental complexity in plants, whose cells possess a rigid cell wall. The phytohormone auxin is a vital growth regulator with central importance for differential growth control. Our results indicate that auxin-reliant growth programs affect the molecular complexity of xyloglucans, the major type of cell wall hemicellulose in eudicots. Auxin-dependent induction and repression of growth coincide with reduced and enhanced molecular complexity of xyloglucans, respectively. In agreement with a proposed function in growth control, genetic interference with xyloglucan side decorations distinctly modulates auxin-dependent differential growth rates. Our work proposes that auxin-dependent growth programs have a spatially defined effect on xyloglucan's molecular structure, which in turn affects cell wall mechanics and specifies differential, gravitropic hypocotyl growth.
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Affiliation(s)
- Silvia Melina Velasquez
- Department of Applied Genetics and Cell Biology, University of Natural Resources and Life Sciences Vienna (BOKU), Muthgasse 18, 1190 Vienna, Austria; (P.V.); (E.B.); (K.A.D.); (M.D.); (M.K.)
| | - Xiaoyuan Guo
- Department of Plant and Environmental Sciences, University of Copenhagen, Thorvaldsensvej 40, DK-1871 Frederiksberg C, Denmark; (X.G.); (J.M.)
| | - Marçal Gallemi
- Institute of Science and Technology Austria, 3400 Klosterneuburg, Austria; (M.G.); (E.B.)
| | - Bibek Aryal
- Department of Forest Genetics and Plant Physiology, Umeå Plant Science Centre, Swedish University of Agricultural Sciences, SE-901 87 Umeå, Sweden; (B.A.); (O.N.); (R.P.B.)
| | - Peter Venhuizen
- Department of Applied Genetics and Cell Biology, University of Natural Resources and Life Sciences Vienna (BOKU), Muthgasse 18, 1190 Vienna, Austria; (P.V.); (E.B.); (K.A.D.); (M.D.); (M.K.)
| | - Elke Barbez
- Department of Applied Genetics and Cell Biology, University of Natural Resources and Life Sciences Vienna (BOKU), Muthgasse 18, 1190 Vienna, Austria; (P.V.); (E.B.); (K.A.D.); (M.D.); (M.K.)
- Faculty of Biology, Department of Molecular Plant Physiology (MoPP), University of Freiburg, 79104 Freiburg, Germany
| | - Kai Alexander Dünser
- Department of Applied Genetics and Cell Biology, University of Natural Resources and Life Sciences Vienna (BOKU), Muthgasse 18, 1190 Vienna, Austria; (P.V.); (E.B.); (K.A.D.); (M.D.); (M.K.)
| | - Martin Darino
- Department of Applied Genetics and Cell Biology, University of Natural Resources and Life Sciences Vienna (BOKU), Muthgasse 18, 1190 Vienna, Austria; (P.V.); (E.B.); (K.A.D.); (M.D.); (M.K.)
| | - Aleš Pĕnčík
- Laboratory of Growth Regulators, Faculty of Science, Palacký University and Institute of Experimental Botany, The Czech Academy of Sciences, Šlechtitelů 27, 78371 Olomouc, Czech Republic;
| | - Ondřej Novák
- Department of Forest Genetics and Plant Physiology, Umeå Plant Science Centre, Swedish University of Agricultural Sciences, SE-901 87 Umeå, Sweden; (B.A.); (O.N.); (R.P.B.)
- Laboratory of Growth Regulators, Faculty of Science, Palacký University and Institute of Experimental Botany, The Czech Academy of Sciences, Šlechtitelů 27, 78371 Olomouc, Czech Republic;
| | - Maria Kalyna
- Department of Applied Genetics and Cell Biology, University of Natural Resources and Life Sciences Vienna (BOKU), Muthgasse 18, 1190 Vienna, Austria; (P.V.); (E.B.); (K.A.D.); (M.D.); (M.K.)
| | - Gregory Mouille
- Institut Jean-Pierre Bourgin, Institut National de la Recherche Agronomique, AgroParisTech, CNRS, Université Paris-Saclay, RD10, CEDEX, 78026 Versailles, France;
| | - Eva Benková
- Institute of Science and Technology Austria, 3400 Klosterneuburg, Austria; (M.G.); (E.B.)
| | - Rishikesh P. Bhalerao
- Department of Forest Genetics and Plant Physiology, Umeå Plant Science Centre, Swedish University of Agricultural Sciences, SE-901 87 Umeå, Sweden; (B.A.); (O.N.); (R.P.B.)
| | - Jozef Mravec
- Department of Plant and Environmental Sciences, University of Copenhagen, Thorvaldsensvej 40, DK-1871 Frederiksberg C, Denmark; (X.G.); (J.M.)
| | - Jürgen Kleine-Vehn
- Faculty of Biology, Department of Molecular Plant Physiology (MoPP), University of Freiburg, 79104 Freiburg, Germany
- Center for Integrative Biological Signalling Studies (CIBSS), University of Freiburg, 79104 Freiburg, Germany
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9
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Aryal B, Morikawa D, Tsuda K, Terauchi M. Improvement of precision in refinements of structure factors using convergent-beam electron diffraction patterns taken at Bragg-excited conditions. Acta Crystallogr A Found Adv 2021; 77:289-295. [PMID: 34196291 DOI: 10.1107/s2053273321004137] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/18/2020] [Accepted: 04/17/2021] [Indexed: 11/11/2022]
Abstract
A local structure analysis method based on convergent-beam electron diffraction (CBED) has been used for refining isotropic atomic displacement parameters and five low-order structure factors with sin θ/λ ≤ 0.28 Å-1 of potassium tantalate (KTaO3). Comparison between structure factors determined from CBED patterns taken at the zone-axis (ZA) and Bragg-excited conditions is made in order to discuss their precision and sensitivities. Bragg-excited CBED patterns showed higher precision in the refinement of structure factors than ZA patterns. Consistency between higher precision and sensitivity of the Bragg-excited CBED patterns has been found only for structure factors of the outer zeroth-order Laue-zone reflections with larger reciprocal-lattice vectors. Correlation coefficients among the refined structure factors in the refinement of Bragg-excited patterns are smaller than those of the ZA ones. Such smaller correlation coefficients lead to higher precision in the refinement of structure factors.
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Affiliation(s)
- B Aryal
- Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, Sendai 980-8577, Japan
| | - D Morikawa
- Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, Sendai 980-8577, Japan
| | - K Tsuda
- Frontier Research Institute for Interdisciplinary Sciences, Tohoku University, Sendai 980-8578, Japan
| | - M Terauchi
- Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, Sendai 980-8577, Japan
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10
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Komokata T, Nuruki K, Tada N, Imada R, Aryal B, Kaieda M, Sane S. An invaginated pancreaticogastrostomy following subtotal stomach-preserving pancreaticoduodenectomy: A prospective observational study. Asian J Surg 2021; 44:1510-1514. [PMID: 33865665 DOI: 10.1016/j.asjsur.2021.03.017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2021] [Revised: 03/04/2021] [Accepted: 03/18/2021] [Indexed: 10/21/2022] Open
Abstract
BACKGROUND/OBJECTIVE Postoperative pancreatic fistula (POPF) leads to life-threatening complications after pancreaticoduodenectomy (PD). Pancreaticogastrostomy (PG) often adopted as a reconstruction technique after PD to prevent POPF. Delayed gastric emptying (DGE) following PD is the most common complication that compromises the quality of life. Subtotal stomach-preserving PD (SSPPD) preserves the pooling ability of the stomach and minimize the occurrence of DGE. This study aimed to describe our PG technique following SSPPD and evaluate the perioperative outcomes. METHODS The study included patients who underwent PG following SSPPD from August 2013 to July 2020 at our institution. An invaginated PG was performed by one-layer eight interrupted sutures with a lost stent. Patients' demographics and perioperative outcomes were documented. RESULTS This technique was applied in 72 patients with a median age of 75 years. The median operative time was 342 min. The clinically relevant POPF, DGE and post-pancreatectomy hemorrhage was 4 (5.6%), 5 (6.9%), and 10 (13.9%), respectively. Although the drain fluid amylase concentration on postoperative day 3 was significantly higher in clinically relevant POPF (CR-POPF) positive group (median, 2006 U/L vs. 74 U/L in CR-POPF negative group, p = 0.002), none of the risk factors including disease pathology, pancreatic duct diameter, texture of pancreas and excessive blood loss were significantly associated with CR-POPF. Other morbidity ≥ Clavien-Dindo classification II occurred in 29 patients (40.3%). The 90-days operative mortality was two (2.8%). CONCLUSIONS This novel method of one-layer invaginated PG following SSPPD is safe and dependable procedure with acceptable morbidity and mortality.
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Affiliation(s)
- Teruo Komokata
- Department of Surgery, National Hospital Organization Kagoshima Medical Center, Kagoshima, Japan.
| | - Kensuke Nuruki
- Department of Surgery, National Hospital Organization Kagoshima Medical Center, Kagoshima, Japan
| | - Nobuhiro Tada
- Department of Surgery, National Hospital Organization Kagoshima Medical Center, Kagoshima, Japan
| | - Ryo Imada
- Department of Surgery, National Hospital Organization Kagoshima Medical Center, Kagoshima, Japan
| | - Bibek Aryal
- Department of Surgery, National Hospital Organization Kagoshima Medical Center, Kagoshima, Japan
| | - Mamoru Kaieda
- Department of Surgery, National Hospital Organization Kagoshima Medical Center, Kagoshima, Japan
| | - Soji Sane
- Department of Surgery, National Hospital Organization Kagoshima Medical Center, Kagoshima, Japan
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11
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Abstract
The Coronavirus disease (COVID-19) pandemic continues to shut down colleges and universities including medical schools all over the world, thus pushing medical schools to seek e-learning to maintain continuity of curriculum. Although developed countries are comfortable learning through the internet, low-income countries like Nepal with limited experience in e-learning have used this lockdown as an opportunity to develop online classes. This crisis has clearly revealed the importance of e-learning in for medical educators in Nepal to disseminate knowledge beyond the restrictions of geography and other barriers.
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Affiliation(s)
- Merina Pandey
- Kathmandu Medical College Private Limited, Sinamangal, Kathmandu, Nepal
| | - Bibek Aryal
- Kagoshima Medical Center National Hospital Organization, Kagoshima, Japan
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12
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Imada R, Komakata T, Aryal B, Tada N, Nuruki K, Kataoka T, Hiramine K, Mukaihara K, Kinjo T. Pancreaticoduodenectomy after transcatheter aortic valve implantation in an elderly patient with severe aortic stenosis and pancreas cancer: A case report. Ann Med Surg (Lond) 2021; 62:207-210. [PMID: 33537131 PMCID: PMC7843360 DOI: 10.1016/j.amsu.2021.01.050] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2020] [Revised: 01/14/2021] [Accepted: 01/15/2021] [Indexed: 12/03/2022] Open
Abstract
Introduction and importance Not only pancreatic cancer but also aortic stenosis (AS) is increasing with the aging population. There is no optimal strategy for elderly patients with both pancreatic cancer and AS. We report a case of pancreatic head cancer with severe AS undergoing pancreaticoduodenectomy (PD) after transcatheter aortic valve implantation (TAVI). Case presentation An 88-year-old woman was referred to our hospital because of severe AS with symptoms of heart failure. Preoperative examination revealed resectable pancreatic head cancer, so TAVI was performed before PD to reduce the perioperative risk. The patient underwent PD 34 days after TAVI, with no significant postoperative complications, and was transferred to the other hospital for rehabilitation on postoperative day 45. No recurrence was observed at more than 7 months without adjuvant therapy. Clinical discussion Aortic valve replacement (AVR) is recommended before non-cardiac surgery in patients with symptomatic severe AS. Surgical aortic valve replacement (SAVR) is the standard treatment. However, owing to the highly invasive procedure and increased perioperative risk, SAVR is usually avoided in elderly patients with malignancy and severe AS. We demonstrated that TAVI followed by PD could be safely performed in high-risk elderly patients presenting with both severe AS and pancreatic head cancer. To our knowledge, this is the first case report of PD after TAVI in a patient with severe AS. Conclusion We demonstrated that TAVI followed by PD could be safely performed in high-risk elderly patients presenting with severe AS and co-existing malignancy. Severe aortic stenosis (AS) is a risk factor for non-cardiac surgery. In some cases, prior treatment of AS is recommended. Minimally invasive transcatheter aortic valve implantation (TAVI) may be a treatment option for the elderly cancer patients. Preceding TAVI may be a useful therapeutic strategy for elderly cancer patients with severe AS.
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Affiliation(s)
- Ryo Imada
- Department of Surgery, National Hospital Organization Kagoshima Medical Center, Kagoshima, Japan
| | - Teruo Komakata
- Department of Surgery, National Hospital Organization Kagoshima Medical Center, Kagoshima, Japan
| | - Bibek Aryal
- Department of Surgery, National Hospital Organization Kagoshima Medical Center, Kagoshima, Japan
| | - Nobuhiro Tada
- Department of Surgery, National Hospital Organization Kagoshima Medical Center, Kagoshima, Japan
| | - Kensuke Nuruki
- Department of Surgery, National Hospital Organization Kagoshima Medical Center, Kagoshima, Japan
| | - Tetsuro Kataoka
- Department of Cardiovascular Medicine, National Hospital Organization Kagoshima Medical Center, Kagoshima, Japan
| | - Kiyohisa Hiramine
- Department of Cardiovascular Medicine, National Hospital Organization Kagoshima Medical Center, Kagoshima, Japan
| | - Kosuke Mukaihara
- Department of Cardiovascular Surgery, National Hospital Organization Kagoshima Medical Center, Kagoshima, Japan
| | - Tamahiro Kinjo
- Department of Cardiovascular Surgery, National Hospital Organization Kagoshima Medical Center, Kagoshima, Japan
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13
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Dhimal ML, Rana N, Aryal B, Adhikari SK, Shrestha R, Gyanwali P, Dhimal M. Age and Gender Differences in COVID 19 Morbidity and Mortality in Nepal. Kathmandu Univ Med J (KUMJ) 2020; 18:329-332. [PMID: 34165086] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Background The global health community has emphasized the importance of reporting epidemiological data by age and sex groups in the COVID-19 pandemic. However, age and sex disaggregated data of COVID-19 cases and deaths are rarely reported. Such data are very crucial for public to make truly informed choices about their own diseases risk and also for governments for public policy response. Objective To assess age and gender difference among COVID-19 cases and deaths in Nepal. Method This is a retrospective study which uses public data on COVID-19 cases and deaths released by Ministry of Health and Population, Government of Nepal from January to November, 2020. The data analysis was carried out using SPPS software version 26. Result Nepal reported 233,452 confirmed cases and 1,566 deaths of COVID-19 from 23 January 2020 to 30 November 2020. We found statistically significant differences on COVID-19 cases by age and gender in Nepal with higher number of cases among males of economically active age groups (20-60 years). Similarly, we found significant difference in COVID-19 mortality with more death occurred among male group compared to female group and with highest number of deaths among the people of above 60 years. Furthermore, we found differences in cases and deaths among provinces. Conclusion The age and gender differences in COVID cases and deaths in Nepal indicates needs of considering age and sex groups seriously while planning for testing, case management and vaccination against COVID-19 infections in Nepal.
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Affiliation(s)
- M L Dhimal
- Global Institute for Interdisciplinary Studies, Kathmandu, Nepal
| | - N Rana
- Nepal Health Research Council, Ramshah Path, Kathmandu, Nepal
| | - B Aryal
- Nepal Health Research Council, Ramshah Path, Kathmandu, Nepal
| | - S K Adhikari
- Ministry of Health and Population, Ramshah Path, Kathmandu, Nepal
| | - R Shrestha
- Dhulikhel Hospital, Kathmandu University Hospital, Dhulikhel, Kavre, Nepal
| | - P Gyanwali
- Nepal Health Research Council, Ramshah Path, Kathmandu, Nepal
| | - M Dhimal
- Nepal Health Research Council, Ramshah Path, Kathmandu, Nepal
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14
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Komokata T, Aryal B, Tada N, Nuruki K. The high complexity major liver resection by Thunderbeat with the Pringle maneuver and infra-hepatic inferior vena cava clamping. Asian J Surg 2020; 43:698-699. [PMID: 31952879 DOI: 10.1016/j.asjsur.2020.01.001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2019] [Accepted: 01/05/2020] [Indexed: 10/25/2022] Open
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15
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Komokata T, Aryal B, Tada N, Kaieda M, Nuruki K. Impact of antithrombotic therapy on the outcomes with focus on bleeding and thromboembolic events in patients undergoing pancreticoduodenectomy. ANZ J Surg 2020; 90:1441-1446. [PMID: 32378761 DOI: 10.1111/ans.15932] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2020] [Revised: 04/09/2020] [Accepted: 04/14/2020] [Indexed: 01/04/2023]
Abstract
BACKGROUND We investigated perioperative outcomes of pancreaticoduodenectomy (PD) in patients receiving antithrombotic therapy (ATT) with a focus on the incidence of perioperative bleeding and thromboembolic complications. METHODS A total of 77 patients who underwent PD at our institution between 2013 and 2019 were retrospectively reviewed. Clinical findings and surgical outcomes including bleeding and thromboembolic complications were compared in patients with or without ATT. Interruption of ATT and perioperative heparin bridging were based on our hospital protocol. RESULTS Among ATT (30) and non-ATT (47) groups, ATT group had a significantly higher age and history of cardiocerebrovascular diseases. No significant difference was observed in intraoperative and post-pancreatectomy haemorrhage (PPH) between the groups. ATT group was associated with a significantly higher rate of post-operative complications, Clavien-Dindo classification ≥II and thromboembolic events. Operative mortality in ATT and non-ATT groups was 2 (6.7%) and 1 (2.1%), respectively. There was no significant association between ATT and excessive intraoperative blood loss (≥1000 mL), PPH (≥grade B) and thromboembolic complications (Clavien-Dindo classification ≥II). CONCLUSION In patients with ATT, PD is a feasible procedure with no major impact on intraoperative bleeding or PPH.
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Affiliation(s)
- Teruo Komokata
- Department of Surgery, National Hospital Organization Kagoshima Medical Center, Kagoshima, Japan
| | - Bibek Aryal
- Department of Surgery, National Hospital Organization Kagoshima Medical Center, Kagoshima, Japan
| | - Nobuhiro Tada
- Department of Surgery, National Hospital Organization Kagoshima Medical Center, Kagoshima, Japan
| | - Mamoru Kaieda
- Department of Surgery, National Hospital Organization Kagoshima Medical Center, Kagoshima, Japan
| | - Kensuke Nuruki
- Department of Surgery, National Hospital Organization Kagoshima Medical Center, Kagoshima, Japan
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16
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Aryal B, Yamakuchi M, Shimizu T, Kadono J, Furoi A, Gejima K, Takenouchi K, Komokata T, Hashiguchi T, Imoto Y. Bivalent property of intra-platelet VWF in liver regeneration and HCC recurrence: A prospective multicenter study. Cancer Biomark 2020; 26:51-61. [PMID: 31322547 DOI: 10.3233/cbm-190168] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
BACKGROUND AND AIMS A striking difference has been observed in structure and functional properties between plasma and platelet von Willebrand factor (VWF). While the existing evidence has revealed a clinical relevance of plasma VWF-Ag in liver regeneration (LR) and different cancers, this study was designed to explore the properties of intra-platelet (IP) and serum VWF-Ag in patients with hepatocellular carcinoma (HCC) undergoing partial hepatectomy. METHODS A total of 40 patients undergoing partial hepatectomy were prospectively recruited from 3 institutions. VWF-Ag concentrations were evaluated mainly in serum and platelet extracts. Patients were followed-up for postoperative liver dysfunction and HCC recurrence. RESULTS We observed a post-resection increase in the concentration of VWF-Ag in serum and platelet. Patients with postoperative liver dysfunction had substantially reduced serum and IP VWF-Ag concentrations. After a 2-year follow-up, patients with higher post-resection serum and IP VWF-Ag concentrations were found to develop early HCC recurrence. Likewise, IP VWF-Ag was able to independently predict post-resection early HCC recurrence. CONCLUSION This multicenter, prospective, pilot study demonstrates a bivalent property of IP VWF in LR and oncological outcome; low preoperative VWF appeared to have a negative association on post-resection liver dysfunction, whereas, patients with higher post-resection VWF-Ag concentrations were found to have early HCC recurrence.
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Affiliation(s)
- Bibek Aryal
- Cardiovascular and Gastroenterological Surgery, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima 890-8520, Japan
| | - Munekazu Yamakuchi
- Department of Laboratory and Vascular Medicine, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima 890-8520, Japan
| | - Toshiaki Shimizu
- Department of Laboratory and Vascular Medicine, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima 890-8520, Japan
| | - Jun Kadono
- Department of Surgery, Kirishima Medical Center, Kirishima 899-5112, Japan
| | - Akira Furoi
- Department of Surgery, Kirishima Medical Center, Kirishima 899-5112, Japan
| | - Kentaro Gejima
- Cardiovascular and Gastroenterological Surgery, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima 890-8520, Japan
| | - Kazunori Takenouchi
- Department of Laboratory and Vascular Medicine, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima 890-8520, Japan
| | - Teruo Komokata
- Department of Surgery, Kagoshima Medical Center, National Hospital Organization, Kagoshima 892-0853, Japan
| | - Teruto Hashiguchi
- Department of Laboratory and Vascular Medicine, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima 890-8520, Japan
| | - Yutaka Imoto
- Cardiovascular and Gastroenterological Surgery, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima 890-8520, Japan
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17
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Aryal B, Yamakuchi M, Hashiguchi T, Imoto Y. Intra-platelet Serotonin as a Biomarker in HCC Recurrence: When Time Matters. J Cancer 2019; 10:2384-2385. [PMID: 31258742 PMCID: PMC6584343 DOI: 10.7150/jca.30696] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2018] [Accepted: 04/15/2019] [Indexed: 11/26/2022] Open
Affiliation(s)
- Bibek Aryal
- Cardiovascular and Gastroenterological Surgery, Graduate School of Medical and Dental Sciences, Kagoshima University 890-8520, Kagoshima, Japan
| | - Munekazu Yamakuchi
- Department of Laboratory and Vascular Medicine, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima 890-8520, Japan
| | - Teruto Hashiguchi
- Department of Laboratory and Vascular Medicine, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima 890-8520, Japan
| | - Yutaka Imoto
- Cardiovascular and Gastroenterological Surgery, Graduate School of Medical and Dental Sciences, Kagoshima University 890-8520, Kagoshima, Japan
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18
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Motodaka H, Aryal B, Mizuta Y, Tada N, Yoshikawa K, Kaieda M, Kawazu Y, Kinjo T, Komokata T. Simultaneous Surgery for Inferior Vena Cava Leiomyosarcoma with Multiple Hepatic Metastases: A Justified Challenge. Am J Case Rep 2019; 20:902-907. [PMID: 31235683 PMCID: PMC6604762 DOI: 10.12659/ajcr.915995] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Patient: Male, 42 Final Diagnosis: IVC leiomyosarcoma with multiple liver metastases Symptoms: Abdominal pain Medication: — Clinical Procedure: IVC resection with hepatectomy Specialty: Surgery
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Affiliation(s)
- Hiroyuko Motodaka
- Department of Surgery, Kagoshima Medical Center, National Hospital Organization, Kagoshima City, Kagoshima, Japan
| | - Bibek Aryal
- Department of Surgery, Kagoshima Medical Center, National Hospital Organization, Kagoshima City, Kagoshima, Japan.,Department of Cardiovascular and Gastroenterological Surgery, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima City, Kagoshima, Japan
| | - Yoshiyuki Mizuta
- Department of Surgery, Kagoshima Medical Center, National Hospital Organization, Kagoshima City, Kagoshima, Japan
| | - Nobuhiro Tada
- Department of Surgery, Kagoshima Medical Center, National Hospital Organization, Kagoshima City, Kagoshima, Japan
| | - Kota Yoshikawa
- Department of Surgery, Kagoshima Medical Center, National Hospital Organization, Kagoshima City, Kagoshima, Japan
| | - Mamoru Kaieda
- Department of Surgery, Kagoshima Medical Center, National Hospital Organization, Kagoshima City, Kagoshima, Japan
| | - Yoshikazu Kawazu
- Department of Cardiovascular Surgery, Kagoshima Medical Center, National Hospital Organization, Kagoshima City, Kagoshima, Japan
| | - Tamahiro Kinjo
- Department of Cardiovascular Surgery, Kagoshima Medical Center, National Hospital Organization, Kagoshima City, Kagoshima, Japan
| | - Teruo Komokata
- Department of Surgery, Kagoshima Medical Center, National Hospital Organization, Kagoshima City, Kagoshima, Japan
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19
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Matern A, Böttcher C, Eschen-Lippold L, Westermann B, Smolka U, Döll S, Trempel F, Aryal B, Scheel D, Geisler M, Rosahl S. A substrate of the ABC transporter PEN3 stimulates bacterial flagellin (flg22)-induced callose deposition in Arabidopsis thaliana. J Biol Chem 2019; 294:6857-6870. [PMID: 30833326 DOI: 10.1074/jbc.ra119.007676] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2019] [Revised: 02/20/2019] [Indexed: 12/28/2022] Open
Abstract
Nonhost resistance of Arabidopsis thaliana against Phytophthora infestans, a filamentous eukaryotic microbe and the causal agent of potato late blight, is based on a multilayered defense system. Arabidopsis thaliana controls pathogen entry through the penetration-resistance genes PEN2 and PEN3, encoding an atypical myrosinase and an ABC transporter, respectively, required for synthesis and export of unknown indole compounds. To identify pathogen-elicited leaf surface metabolites and further unravel nonhost resistance in Arabidopsis, we performed untargeted metabolite profiling by incubating a P. infestans zoospore suspension on leaves of WT or pen3 mutant Arabidopsis plants. Among the plant-secreted metabolites, 4-methoxyindol-3-yl-methanol and S-(4-methoxy-indol-3-yl-methyl) cysteine were detected in spore suspensions recollected from WT plants, but at reduced levels from the pen3 mutant plants. In both whole-cell and microsome-based assays, 4-methoxyindol-3-yl-methanol was transported in a PEN3-dependent manner, suggesting that this compound is a PEN3 substrate. The syntheses of both compounds were dependent on functional PEN2 and phytochelatin synthase 1. None of these compounds inhibited mycelial growth of P. infestans in vitro Of note, exogenous application of 4-methoxyindol-3-yl methanol slightly elevated cytosolic Ca2+ levels and enhanced callose deposition in hydathodes of seedlings treated with a bacterial pathogen-associated molecular pattern (PAMP), flagellin (flg22). Loss of flg22-induced callose deposition in leaves of pen3 seedlings was partially reverted by the addition of 4-methoxyindol-3-yl methanol. In conclusion, we have identified a specific indole compound that is a substrate for PEN3 and contributes to the plant defense response against microbial pathogens.
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Affiliation(s)
- Andreas Matern
- From the Department of Stress and Developmental Biology and
| | | | | | - Bernhard Westermann
- Department of Bioorganic Chemistry, Leibniz Institute of Plant Biochemistry, Weinberg 3, D-06120 Halle (Saale), Germany and
| | - Ulrike Smolka
- From the Department of Stress and Developmental Biology and
| | - Stefanie Döll
- From the Department of Stress and Developmental Biology and
| | - Fabian Trempel
- From the Department of Stress and Developmental Biology and
| | - Bibek Aryal
- the Department of Biology, University of Fribourg, Chemin du Musée 10, CH-1700 Fribourg, Switzerland
| | - Dierk Scheel
- From the Department of Stress and Developmental Biology and
| | - Markus Geisler
- the Department of Biology, University of Fribourg, Chemin du Musée 10, CH-1700 Fribourg, Switzerland
| | - Sabine Rosahl
- From the Department of Stress and Developmental Biology and
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20
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Aryal B, Huynh J, Schneuwly J, Siffert A, Liu J, Alejandro S, Ludwig-Müller J, Martinoia E, Geisler M. ABCG36/PEN3/PDR8 Is an Exporter of the Auxin Precursor, Indole-3-Butyric Acid, and Involved in Auxin-Controlled Development. Front Plant Sci 2019; 10:899. [PMID: 31354769 PMCID: PMC6629959 DOI: 10.3389/fpls.2019.00899] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/12/2019] [Accepted: 06/25/2019] [Indexed: 05/18/2023]
Abstract
The PDR-type ABCG transporter, ABCG36/PDR8/PEN3, is thought to be implicated in the export of a few structurally unrelated substrates, including the auxin precursor, indole-3-butyric acid (IBA), although a clear-cut proof of transport is lacking. An outward facing, lateral root (LR) location for ABCG36 fuelled speculations that it might secrete IBA into the rhizosphere. Here, we provide strong evidence that ABCG36 catalyzes the export of IBA - but not of indole-3-acetic acid - through the plasma membrane. ABCG36 seems to function redundantly with the closely related isoform ABCG37/PDR9/PIS1 in a negative control of rootward IBA transport in roots, which might be dampened by concerted, lateral IBA export. Analyses of single and double mutant phenotypes suggest that both ABCG36 and ABCG37 function cooperatively in auxin-controlled plant development. Both seem to possess a dual function in the control of auxin homeostasis in the root tip and long-range transport in the mature root correlating with non-polar and polar expression profiles in the LR cap and epidermis, respectively.
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Affiliation(s)
- Bibek Aryal
- Department of Biology, University of Fribourg, Fribourg, Switzerland
| | - John Huynh
- Department of Biology, University of Fribourg, Fribourg, Switzerland
| | - Jerôme Schneuwly
- Department of Biology, University of Fribourg, Fribourg, Switzerland
| | - Alexandra Siffert
- Department of Biology, University of Fribourg, Fribourg, Switzerland
| | - Jie Liu
- Department of Biology, University of Fribourg, Fribourg, Switzerland
| | | | | | | | - Markus Geisler
- Department of Biology, University of Fribourg, Fribourg, Switzerland
- *Correspondence: Markus Geisler,
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Aryal B, Yamakuchi M, Shimizu T, Kadono J, Furoi A, Gejima K, Komokata T, Hashiguchi T, Imoto Y. Therapeutic implication of platelets in liver regeneration -hopes and hues. Expert Rev Gastroenterol Hepatol 2018; 12:1219-1228. [PMID: 30791793 DOI: 10.1080/17474124.2018.1533813] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Mounting evidence highlights platelet involvement in liver regeneration via interaction with liver cells, growth factors release, and signaling contributions. Existing research suggests a compelling biological rationale for utilizing platelet biology, with the goal of improving liver function and accelerating its regenerative potential. Despite its expanding application in several clinical areas, the contribution of the platelet and its therapeutic implementation in liver regeneration so far has not yet fulfilled the initial high expectations. Areas covered: This review scrutinizes the progress, current updates, and discusses how recent understanding - particularly in the clinical implications of platelet-based therapy - may enable strategies to introduce and harness the therapeutic potential of the platelet during liver regeneration. Expert commentary: Several clinical and translational studies have facilitated a platform for the development of platelet-based therapy to enhance liver regeneration. While some of these therapies are effective to augment liver regeneration, the others have had some detrimental outcomes. The existing evidence represents a challenge for future projects that are focused on directly incorporating platelet-based therapies to induce liver regeneration.
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Affiliation(s)
- Bibek Aryal
- a Cardiovascular and Gastroenterological Surgery, Graduate School of Medical and Dental Sciences , Kagoshima University , Kagoshima , Japan
| | - Munekazu Yamakuchi
- b Department of Laboratory and Vascular Medicine, Graduate School of Medical and Dental Sciences , Kagoshima University , Kagoshima , Japan
| | - Toshiaki Shimizu
- b Department of Laboratory and Vascular Medicine, Graduate School of Medical and Dental Sciences , Kagoshima University , Kagoshima , Japan
| | - Jun Kadono
- c Department of Surgery , Kirishima Medical Center , Kirishima , Japan
| | - Akira Furoi
- c Department of Surgery , Kirishima Medical Center , Kirishima , Japan
| | - Kentaro Gejima
- a Cardiovascular and Gastroenterological Surgery, Graduate School of Medical and Dental Sciences , Kagoshima University , Kagoshima , Japan
| | - Teruo Komokata
- d Department of Surgery , Kagoshima Medical Center . Kagoshima , Japan
| | - Teruto Hashiguchi
- b Department of Laboratory and Vascular Medicine, Graduate School of Medical and Dental Sciences , Kagoshima University , Kagoshima , Japan
| | - Yutaka Imoto
- a Cardiovascular and Gastroenterological Surgery, Graduate School of Medical and Dental Sciences , Kagoshima University , Kagoshima , Japan
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Aryal B, Komokata T, Yasumura H, Kamiimabeppu D, Inoue M, Yoshikawa K, Kaieda M, Imoto Y. Evaluation of THUNDERBEAT® in open liver resection- a single-center experience. BMC Surg 2018; 18:86. [PMID: 30326866 PMCID: PMC6192096 DOI: 10.1186/s12893-018-0423-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2018] [Accepted: 10/05/2018] [Indexed: 01/26/2023] Open
Abstract
Background THUNDERBEAT® (TB) (Olympus Medical Systems Corp., Tokyo, Japan) is a dynamic energy system device that simultaneously delivers ultrasonically generated frictional heat energy and electrically generated bipolar energy. TB is being routinely used in various operative procedures, however, less is known about its utility in liver resection. We, herein, report our early experience of using TB in open liver resection particularly in patients with normal or near-normal liver parenchyma. Methods We retrospectively reviewed the clinical characteristics, and evaluated the perioperative outcome of twenty-eight patients who underwent liver resection with TB, and twenty-four patients who underwent liver resection with basic procedure in our institution. The resection type was stratified into: major hepatectomy; resection of 3 or more than 3 Couinauds segments, and minor hepatectomy; resection of less than 3 Couinauds segments. Results Liver resection time (mean ± SD) in TB group with major hepatectomy was significantly shorter: 16.7 ± 8.8 compared to 62.8 ± 39.4 min in basic procedure group (P < 0.0001). Accordingly, the liver resection time (mean ± SD) in TB group with minor hepatectomy was also significantly shorter, 8.3 ± 2.9 min compared to 45.2 ± 23.9 min in liver resection with basic procedure (P < 0.001). No significant difference was observed between the groups in terms of intraoperative blood transfusion ratio, postoperative complication and postoperative liver dysfunction. Conclusion TB as a new energy device can offer a safe, reliable and substantially rapid liver resection particularly in patients with normal or near-normal liver parenchyma.
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Affiliation(s)
- Bibek Aryal
- Department of Surgery, Kagoshima Medical Center, National Hospital Organization, 8-1 Shiroyamacho, Kagoshima-shi, Kagoshima, 892-0853, Japan.,Cardiovascular and Gastroenterological Surgery, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima, Japan
| | - Teruo Komokata
- Department of Surgery, Kagoshima Medical Center, National Hospital Organization, 8-1 Shiroyamacho, Kagoshima-shi, Kagoshima, 892-0853, Japan.
| | - Hiroto Yasumura
- Department of Surgery, Kagoshima Medical Center, National Hospital Organization, 8-1 Shiroyamacho, Kagoshima-shi, Kagoshima, 892-0853, Japan
| | - Daisaku Kamiimabeppu
- Department of Surgery, Kagoshima Medical Center, National Hospital Organization, 8-1 Shiroyamacho, Kagoshima-shi, Kagoshima, 892-0853, Japan
| | - Maki Inoue
- Department of Surgery, Kagoshima Medical Center, National Hospital Organization, 8-1 Shiroyamacho, Kagoshima-shi, Kagoshima, 892-0853, Japan
| | - Kota Yoshikawa
- Department of Surgery, Kagoshima Medical Center, National Hospital Organization, 8-1 Shiroyamacho, Kagoshima-shi, Kagoshima, 892-0853, Japan
| | - Mamoru Kaieda
- Department of Surgery, Kagoshima Medical Center, National Hospital Organization, 8-1 Shiroyamacho, Kagoshima-shi, Kagoshima, 892-0853, Japan
| | - Yutaka Imoto
- Cardiovascular and Gastroenterological Surgery, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima, Japan
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Aryal B, Shimizu T, Kadono J, Furoi A, Komokata T, Gejima K, Yamakuchi M, Hashiguchi T, Imoto Y. Exhaustion of platelet kinetics and its implication in post-resection HCC recurrence. Ann Oncol 2018. [DOI: 10.1093/annonc/mdy269.116] [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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Mao H, Aryal B, Langenecker T, Hagmann J, Geisler M, Grebe M. Arabidopsis BTB/POZ protein-dependent PENETRATION3 trafficking and disease susceptibility. Nat Plants 2017; 3:854-858. [PMID: 29085068 DOI: 10.1038/s41477-017-0039-z] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/13/2017] [Accepted: 09/20/2017] [Indexed: 05/29/2023]
Abstract
The outermost cell layer of plant roots (epidermis) constantly encounters environmental challenges. The epidermal outer plasma membrane domain harbours the PENETRATION3 (PEN3)/ABCG36/PDR8 ATP-binding cassette transporter that confers non-host resistance to several pathogens. Here, we show that the Arabidopsis ENDOPLASMIC RETICULUM-ARRESTED PEN3 (EAP3) BTB/POZ-domain protein specifically mediates PEN3 exit from the endoplasmic reticulum and confers resistance to a root-penetrating fungus, providing prime evidence for BTB/POZ-domain protein-dependent membrane trafficking underlying disease resistance.
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Affiliation(s)
- Hailiang Mao
- Umeå Plant Science Centre, Department of Plant Physiology, Umeå University, SE-90 187, Umeå, Sweden
| | - Bibek Aryal
- Department of Biology, Plant Biology Unit, University of Fribourg, Rue Albert-Gockel 3, PER04, CH-1700, Fribourg, Switzerland
| | - Tobias Langenecker
- Department of Molecular Biology, Max Planck Institute for Developmental Biology, Spemannstr. 35, DE-72076, Tübingen, Germany
| | - Jörg Hagmann
- Department of Molecular Biology, Max Planck Institute for Developmental Biology, Spemannstr. 35, DE-72076, Tübingen, Germany
| | - Markus Geisler
- Department of Biology, Plant Biology Unit, University of Fribourg, Rue Albert-Gockel 3, PER04, CH-1700, Fribourg, Switzerland
| | - Markus Grebe
- Umeå Plant Science Centre, Department of Plant Physiology, Umeå University, SE-90 187, Umeå, Sweden.
- Institute of Biochemistry and Biology, Department of Plant Physiology, University of Potsdam, Karl-Liebknecht-Str. 24-25, Building 20, DE-14476, Potsdam-Golm, Germany.
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Aryal B, Shimizu T, Kadono J, Furoi A, Komokata T, Kitazono I, Koriyama C, Yamakuchi M, Hashiguchi T, Imoto Y. Post-Resection Exhaustion of Intra-Platelet Serotonin: Also an Indicator of Early Hepatocellular Carcinoma Recurrence? J Cancer 2017; 8:3984-3991. [PMID: 29187873 PMCID: PMC5706000 DOI: 10.7150/jca.20971] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2017] [Accepted: 09/20/2017] [Indexed: 12/17/2022] Open
Abstract
Purpose: Serotonin (5-hydroxytryptamine, 5-HT) is well known for its growth stimulatory effect on several types of carcinoma and tumor cells. Since a large portion of 5-HT is stored and transported by platelets, the aim of this study was to assess the influence of platelet-sequestered 5-HT on post-resection hepatocellular carcinoma (HCC) recurrence. Methods: This pilot study was conducted in a cohort of forty patients diagnosed with HCC undergoing partial hepatectomy. 5-HT levels in serum, plasma and intra-platelet (IP) were monitored preoperatively and four weeks after liver resection. The patients were followed every three months after the surgery. Results: Follow-up was standardized to a fixed length of time. Fifteen patients (37.5%) developed HCC recurrence during 18 months follow-up. Patients with recurrence had significantly reduced serum and IP 5-HT levels at four weeks of liver resection (P = 0.003 and P = 0.014 respectively). Accordingly, in the Cox regression hazard model, serum and IP 5-HT were able to independently predict the recurrence (hazard ratio = 0.1, 95% confidence interval = 0.01 - 0.75 and hazard ratio = 0.1, 95% confidence interval = 0.01 - 0.89 respectively). The optimal cut-off value of 42.77 ng/ml for serum [area under the curve (AUC): 0.78, P = 0.003] and 0.3117 ng per 106 platelets (AUC: 0.733, P = 0.015), on receiver operating characteristic (ROC) curve corresponded to maximum sensitivity and specificity of prediction. The disease free interval was significantly worse in patients with low serum and IP 5-HT (P = 0.001 and P = 0.029 respectively). Conclusion: IP 5-HT monitored during early follow-up, after liver resection may represent a useful marker of early HCC recurrence.
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Affiliation(s)
- Bibek Aryal
- Cardiovascular and Gastroenterological Surgery, Graduate School of Medical and Dental Sciences, Kagoshima University 890-8520, Kagoshima, Japan
| | - Toshiaki Shimizu
- Department of Laboratory and Vascular Medicine, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima 890-8520, Japan
| | - Jun Kadono
- Cardiovascular and Gastroenterological Surgery, Graduate School of Medical and Dental Sciences, Kagoshima University 890-8520, Kagoshima, Japan
| | - Akira Furoi
- Department of Surgery, Kirishima Medical Center, Kirishima 899-5112, Japan
| | - Teruo Komokata
- Department of Surgery, Kagoshima Medical Center, National Hospital Organization, Kagoshima 892-0853, Japan
| | - Iwao Kitazono
- Cardiovascular and Gastroenterological Surgery, Graduate School of Medical and Dental Sciences, Kagoshima University 890-8520, Kagoshima, Japan
| | - Chihaya Koriyama
- Department of Epidemiology and Preventive Medicine, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima 890-8520, Japan
| | - Munekazu Yamakuchi
- Department of Laboratory and Vascular Medicine, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima 890-8520, Japan
| | - Teruto Hashiguchi
- Department of Laboratory and Vascular Medicine, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima 890-8520, Japan
| | - Yutaka Imoto
- Cardiovascular and Gastroenterological Surgery, Graduate School of Medical and Dental Sciences, Kagoshima University 890-8520, Kagoshima, Japan
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Geisler M, Aryal B, di Donato M, Hao P. A Critical View on ABC Transporters and Their Interacting Partners in Auxin Transport. Plant Cell Physiol 2017; 58:1601-1614. [PMID: 29016918 DOI: 10.1093/pcp/pcx104] [Citation(s) in RCA: 77] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/03/2017] [Accepted: 07/18/2017] [Indexed: 05/24/2023]
Abstract
Different subclasses of ATP-binding cassette (ABC) transporters have been implicated in the transport of native variants of the phytohormone auxin. Here, the putative, individual roles of key members belonging to the ABCB, ABCD and ABCG families, respectively, are highlighted and the knowledge of their assumed expression and transport routes is reviewed and compared with their mutant phenotypes. Protein-protein interactions between ABC transporters and regulatory components during auxin transport are summarized and their importance is critically discussed. There is a focus on the functional interaction between members of the ABCB family and the FKBP42, TWISTED DWARF1, acting as a chaperone during plasma membrane trafficking of ABCBs. Further, the mode and relevance of functional ABCB-PIN interactions is diagnostically re-evaluated. A new nomenclature describing precisely the most likely ABCB-PIN interaction scenarios is suggested. Finally, available tools for the detection and prediction of ABC transporter interactomes are summarized and the potential of future ABC transporter interactome maps is highlighted.
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Affiliation(s)
- Markus Geisler
- University of Fribourg, Department of Biology, CH-1700 Fribourg, Switzerland
| | - Bibek Aryal
- University of Fribourg, Department of Biology, CH-1700 Fribourg, Switzerland
| | - Martin di Donato
- University of Fribourg, Department of Biology, CH-1700 Fribourg, Switzerland
| | - Pengchao Hao
- University of Fribourg, Department of Biology, CH-1700 Fribourg, Switzerland
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Aryal B, Komokata T, Imoto Y. Conquering the deadly stroke: Perspective on a surgeon's odyssey. Ann Med Surg (Lond) 2017; 18:14-15. [PMID: 28507732 PMCID: PMC5423324 DOI: 10.1016/j.amsu.2017.04.017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2017] [Revised: 04/17/2017] [Accepted: 04/30/2017] [Indexed: 12/03/2022] Open
Abstract
An odyssey of a Japanese surgeon, who survived a life-threatening hemorrhagic stroke. Self-motivation and adherence to work ethics displayed by the surgeon to return to work is admirable. Passion is a detrimental factor that enables surgeons to overcome a roadblock to their career.
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Affiliation(s)
- Bibek Aryal
- Cardiovascular and Gastroenterological Surgery, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima, Japan
| | - Teruo Komokata
- Department of Surgery, Kagoshima Medical Center, National Hospital Organization, Kagoshima, Japan
| | - Yutaka Imoto
- Cardiovascular and Gastroenterological Surgery, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima, Japan
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Rajbanshi L, Dali M, Karki S, Khanal K, Aryal B, Chapagain K. Adaptive Support Ventilation as a Sole Mode of Mechanical Ventilation-An Observational Study. Birat J Health Sci 2017. [DOI: 10.3126/bjhs.v1i1.17090] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Introduction Adaptive support ventilation (ASV) is a close loop dual control mechanical ventilation mode. This mode can automatically change its parameters to weaning mode once the patient is actively breathing converting volume targeted pressure control mode to volume targeted pressure support mode. We aimed to observe the outcome of the patients ventilated with ASV as a sole mode in terms of duration of mechanical ventilation, duration of weaning from the ventilatory support and length of Intensive care unit (ICU) stay.Methodology We conducted a prospective observational study for the duration of six months (Sept 2015 to Feb 2016) to assess the clinical outcome of the patients ventilated by ASV as a sole mode of ventilation. The study conducted observation of 78 patients without chronic respiratory, renal, hepatic and neurological disease who were admitted in our intensive care unit for invasive ventilatory support.Results Out of the 187 patients who required invasive and noninvasive ventilation, only 78 patients fulfilled the criteria to be included in the study. It was observed that the mean duration of mechanical ventilation was 5.4 days while weaning as well as tracheal extubation was successful within 13 hours of initiation of weaning. The mean duration of ICU stay was found to be 6.3 days.Conclusion We concluded that the patient ventilated by ASV mode were effectively weaned without the need of changing the ventilator mode. However, the safety of ASV mode needs to be established by large randomized control trail in a wide spectrum of patients.Birat Journal of Health Sciences 2016 1(1): 8-12
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Kuhn BM, Nodzyński T, Errafi S, Bucher R, Gupta S, Aryal B, Dobrev P, Bigler L, Geisler M, Zažímalová E, Friml J, Ringli C. Flavonol-induced changes in PIN2 polarity and auxin transport in the Arabidopsis thaliana rol1-2 mutant require phosphatase activity. Sci Rep 2017; 7:41906. [PMID: 28165500 PMCID: PMC5292950 DOI: 10.1038/srep41906] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2016] [Accepted: 01/04/2017] [Indexed: 01/15/2023] Open
Abstract
The phytohormone auxin is a major determinant and regulatory component important for plant development. Auxin transport between cells is mediated by a complex system of transporters such as AUX1/LAX, PIN, and ABCB proteins, and their localization and activity is thought to be influenced by phosphatases and kinases. Flavonols have been shown to alter auxin transport activity and changes in flavonol accumulation in the Arabidopsis thaliana rol1-2 mutant cause defects in auxin transport and seedling development. A new mutation in ROOTS CURL IN NPA 1 (RCN1), encoding a regulatory subunit of the phosphatase PP2A, was found to suppress the growth defects of rol1-2 without changing the flavonol content. rol1-2 rcn1-3 double mutants show wild type-like auxin transport activity while levels of free auxin are not affected by rcn1-3. In the rol1-2 mutant, PIN2 shows a flavonol-induced basal-to-apical shift in polar localization which is reversed in the rol1-2 rcn1-3 to basal localization. In vivo analysis of PINOID action, a kinase known to influence PIN protein localization in a PP2A-antagonistic manner, revealed a negative impact of flavonols on PINOID activity. Together, these data suggest that flavonols affect auxin transport by modifying the antagonistic kinase/phosphatase equilibrium.
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Affiliation(s)
- Benjamin M Kuhn
- Institute of Plant and Microbial Biology, University of Zurich, Zurich Switzerland
| | - Tomasz Nodzyński
- Mendel Centre for Plant Genomics and Proteomics, Central European Institute of Technology (CEITEC), Masaryk University, Kamenice 5, CZ-625 00 Brno, Czech Republic
| | - Sanae Errafi
- Institute of Plant and Microbial Biology, University of Zurich, Zurich Switzerland
| | - Rahel Bucher
- Institute of Chemistry, University of Zurich, Zurich, Switzerland
| | - Shibu Gupta
- Institute of Plant and Microbial Biology, University of Zurich, Zurich Switzerland
| | - Bibek Aryal
- Department of Biology - geislerLab, University of Fribourg, Fribourg, Switzerland
| | - Petre Dobrev
- Institute of Experimental Botany, Academy of Sciences of the Czech Republic, Prague, Czech Republic
| | - Laurent Bigler
- Institute of Chemistry, University of Zurich, Zurich, Switzerland
| | - Markus Geisler
- Department of Biology - geislerLab, University of Fribourg, Fribourg, Switzerland
| | - Eva Zažímalová
- Institute of Experimental Botany, Academy of Sciences of the Czech Republic, Prague, Czech Republic
| | - Jiří Friml
- Institute of Science and Technology Austria (IST Austria), Am Campus 1, 3400 Klosterneuburg, Austria
| | - Christoph Ringli
- Institute of Plant and Microbial Biology, University of Zurich, Zurich Switzerland
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Aryal B, Komokata T, Ueno T, Yamamoto B, Senokuchi T, Yasuda H, Kaieda M, Imoto Y. A 2-Stage Surgical and Endovascular Treatment of Rare Multiple Aneurysms of Pancreatic Arteries. Ann Vasc Surg 2016; 40:295.e9-295.e13. [PMID: 27913123 DOI: 10.1016/j.avsg.2016.07.092] [Citation(s) in RCA: 6] [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] [Received: 02/27/2016] [Revised: 06/19/2016] [Accepted: 07/17/2016] [Indexed: 11/16/2022]
Abstract
Aneurysms of pancreatic arteries (PAs) are often found incidentally during evaluation of other abdominal pathology. Aneurysms involving multiple PAs are rarely reported in the literature. In case reports of PA aneurysm, inferior pancreaticoduodenal artery is the usual site of aneurysm occurrence. PA aneurysms can be treated surgically by aneurysm exclusion, excision, and by endovascular techniques. However, no clear consensus exists regarding treatment modality, leaving the surgeon to determine the most appropriate approach bearing in mind their experience, anatomical location of the aneurysm, involved artery, and urgency of the procedure. We report a rare PA aneurysm involving dorsal pancreatic artery (DPA) and anterior inferior pancreaticoduodenal artery (AIPDA) associated with celiac stenosis that was incidentally diagnosed in a patient with hepatic hemangioma. In addition, we reviewed data from the literature on patients with diffuse or multiple PA aneurysms and discuss the treatment modality in these rare variants. Both surgical and endovascular procedures are equally advocated in treatment of multiple PA aneurysms. In our report, we demonstrate a 2-stage surgical and endovascular treatment modality; DPA aneurysm that was not suitable for endovascular treatment was surgically resected and an iliohepatic bypass was made between left common iliac artery and AIPDA to ensure good hepatic perfusion. One month after the first procedure, AIPDA aneurysm was treated with endovascular embolization. Two-stage surgical and endovascular procedure may represent a useful strategy to treat aneurysms involving multiple PAs.
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Affiliation(s)
- Bibek Aryal
- Cardiovascular and Gastroenterological Surgery, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima, Japan
| | - Teruo Komokata
- Department of Surgery, Kagoshima Medical Center, National Hospital Organization, Kagoshima, Japan.
| | - Takayuki Ueno
- Department of Cardiovascular surgery, Kagoshima Medical Center, National Hospital Organization, Kagoshima, Japan
| | - Bunsei Yamamoto
- Cardiovascular and Gastroenterological Surgery, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima, Japan
| | - Terutoshi Senokuchi
- Department of Radiology, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima, Japan
| | - Hiroshi Yasuda
- Department of Surgery, Kagoshima Medical Center, National Hospital Organization, Kagoshima, Japan
| | - Mamoru Kaieda
- Department of Surgery, Kagoshima Medical Center, National Hospital Organization, Kagoshima, Japan
| | - Yutaka Imoto
- Cardiovascular and Gastroenterological Surgery, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima, Japan
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Shimizu T, Yamakuchi M, Biswas KK, Aryal B, Yamada S, Hashiguchi T, Maruyama I. HMGB1 is secreted by 3T3-L1 adipocytes through JNK signaling and the secretion is partially inhibited by adiponectin. Obesity (Silver Spring) 2016; 24:1913-21. [PMID: 27430164 DOI: 10.1002/oby.21549] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/19/2016] [Accepted: 04/13/2016] [Indexed: 01/17/2023]
Abstract
OBJECTIVE Obesity is a chronic inflammatory disease, and adipocytes contribute to obesity-associated inflammation by releasing inflammatory mediators. High mobility group box 1 (HMGB1), a highly conserved DNA-binding protein, mainly localized to cell nuclei, has been recently recognized as an innate pro-inflammatory mediator when released extracellularly. It was hypothesized that HMGB1 is an adipocytokine that acts as an innate pro-inflammatory mediator in white adipose tissue (WAT) of patients with obesity and is associated with insulin resistance. Additionally, it was hypothesized that HMGB1 secretion is regulated by adiponectin. METHODS 3T3-L1 cells were differentiated into mature adipocytes. After tumor necrosis factor-α (TNF-α) stimulation, HMGB1 in culture media was measured. Localizations of HMGB1 in 3T3-L1 adipocytes and human WAT were examined by immunostaining. RESULTS HMGB1 was secreted from TNF-α-induced 3T3-L1 adipocytes through JNK signaling. HMGB1-activated MAP kinases (ERK1/2, JNK) and suppressed insulin-stimulated Akt phosphorylation in 3T3-L1 adipocytes. The cytoplasm in 3T3-L1 adipocytes and adipocytes of WAT from a patient with obesity was intensely stained with HMGB1. Adiponectin partially inhibited TNF-α-induced HMGB1 secretion from 3T3-L1 adipocytes. CONCLUSIONS These findings suggest that HMGB1 is a pro-inflammatory adipocytokine involved in WAT inflammation and insulin resistance in patients with obesity, which may contribute to the progression of metabolic syndrome, and that adiponectin protects against HMGB1-induced adipose tissue inflammation.
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Affiliation(s)
- Toshiaki Shimizu
- Department of Laboratory and Vascular Medicine, Kagoshima University Graduate School of Medical and Dental Sciences, Kagoshima, Japan
| | - Munekazu Yamakuchi
- Department of Laboratory and Vascular Medicine, Kagoshima University Graduate School of Medical and Dental Sciences, Kagoshima, Japan
| | - Kamal Krishna Biswas
- Department of Biochemistry and Molecular Biology, University of Rajshahi, Rajshahi, Bangladesh
| | - Bibek Aryal
- Cardiovascular and Gastroenterological Surgery, Kagoshima University Graduate School of Medical and Dental Sciences, Kagoshima, Japan
| | | | - Teruto Hashiguchi
- Department of Laboratory and Vascular Medicine, Kagoshima University Graduate School of Medical and Dental Sciences, Kagoshima, Japan
| | - Ikuro Maruyama
- Department of Systems Biology in Thromboregulation, Kagoshima University Graduate School of Medical and Dental Sciences, Kagoshima, Japan
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Zhu J, Bailly A, Zwiewka M, Sovero V, Di Donato M, Ge P, Oehri J, Aryal B, Hao P, Linnert M, Burgardt NI, Lücke C, Weiwad M, Michel M, Weiergräber OH, Pollmann S, Azzarello E, Mancuso S, Ferro N, Fukao Y, Hoffmann C, Wedlich-Söldner R, Friml J, Thomas C, Geisler M. TWISTED DWARF1 Mediates the Action of Auxin Transport Inhibitors on Actin Cytoskeleton Dynamics. Plant Cell 2016; 28:930-48. [PMID: 27053424 PMCID: PMC4863381 DOI: 10.1105/tpc.15.00726] [Citation(s) in RCA: 65] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/17/2015] [Revised: 03/21/2016] [Accepted: 04/05/2016] [Indexed: 05/18/2023]
Abstract
Plant growth and architecture is regulated by the polar distribution of the hormone auxin. Polarity and flexibility of this process is provided by constant cycling of auxin transporter vesicles along actin filaments, coordinated by a positive auxin-actin feedback loop. Both polar auxin transport and vesicle cycling are inhibited by synthetic auxin transport inhibitors, such as 1-N-naphthylphthalamic acid (NPA), counteracting the effect of auxin; however, underlying targets and mechanisms are unclear. Using NMR, we map the NPA binding surface on the Arabidopsis thaliana ABCB chaperone TWISTED DWARF1 (TWD1). We identify ACTIN7 as a relevant, although likely indirect, TWD1 interactor, and show TWD1-dependent regulation of actin filament organization and dynamics and that TWD1 is required for NPA-mediated actin cytoskeleton remodeling. The TWD1-ACTIN7 axis controls plasma membrane presence of efflux transporters, and as a consequence act7 and twd1 share developmental and physiological phenotypes indicative of defects in auxin transport. These can be phenocopied by NPA treatment or by chemical actin (de)stabilization. We provide evidence that TWD1 determines downstream locations of auxin efflux transporters by adjusting actin filament debundling and dynamizing processes and mediating NPA action on the latter. This function appears to be evolutionary conserved since TWD1 expression in budding yeast alters actin polarization and cell polarity and provides NPA sensitivity.
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Affiliation(s)
- Jinsheng Zhu
- Department of Biology, University of Fribourg, CH-1700 Fribourg, Switzerland
| | - Aurelien Bailly
- Department of Biology, University of Fribourg, CH-1700 Fribourg, Switzerland Department of Plant and Microbial Biology, University of Zurich, CH-8008 Zurich, Switzerland
| | - Marta Zwiewka
- CEITEC-Central European Institute of Technology, Masaryk University, CZ-625 00 Brno, Czech Republic
| | - Valpuri Sovero
- Department of Plant and Microbial Biology, University of Zurich, CH-8008 Zurich, Switzerland
| | - Martin Di Donato
- Department of Biology, University of Fribourg, CH-1700 Fribourg, Switzerland
| | - Pei Ge
- Department of Biology, University of Fribourg, CH-1700 Fribourg, Switzerland
| | - Jacqueline Oehri
- Department of Biology, University of Fribourg, CH-1700 Fribourg, Switzerland Institute of Evolutionary Biology and Environmental Studies, University of Zurich, CH-8057 Zurich, Switzerland
| | - Bibek Aryal
- Department of Biology, University of Fribourg, CH-1700 Fribourg, Switzerland
| | - Pengchao Hao
- Department of Biology, University of Fribourg, CH-1700 Fribourg, Switzerland
| | - Miriam Linnert
- Max Planck Research Unit for Enzymology of Protein Folding, D-06099 Halle (Saale), Germany
| | - Noelia Inés Burgardt
- Max Planck Research Unit for Enzymology of Protein Folding, D-06099 Halle (Saale), Germany Institute of Biochemistry and Biophysics (IQUIFIB), School of Pharmacy and Biochemistry, University of Buenos Aires, C1113AAD Buenos Aires, Argentina
| | - Christian Lücke
- Max Planck Research Unit for Enzymology of Protein Folding, D-06099 Halle (Saale), Germany
| | - Matthias Weiwad
- Max Planck Research Unit for Enzymology of Protein Folding, D-06099 Halle (Saale), Germany Department of Enzymology, Martin-Luther-University Halle-Wittenberg, Institute of Biochemistry and Biotechnology, D-06099 Halle, Germany
| | - Max Michel
- Institute of Complex Systems, ICS-6: Structural Biochemistry, D-52425 Jülich, Germany
| | - Oliver H Weiergräber
- Institute of Complex Systems, ICS-6: Structural Biochemistry, D-52425 Jülich, Germany
| | - Stephan Pollmann
- Centro de Biotecnología y Genómica de Plantas, 28223 Pozuelo de Alarcón, Madrid, Spain
| | | | | | - Noel Ferro
- University of Bonn, Mulliken Center for Theoretical Chemistry, Institute for Physical and Theoretical Chemistry, D-53115 Bonn, Germany
| | - Yoichiro Fukao
- Plant Global Educational Project, Graduate School of Biological Sciences, Nara Institute of Science and Technology, Ikoma 630-0192, Japan
| | - Céline Hoffmann
- Cytoskeleton and Cancer Progression, Laboratory of Experimental Cancer Research, Department of Oncology, Luxembourg Institute of Health, L-1526 Luxembourg, Luxembourg
| | | | - Jiří Friml
- Institute of Science and Technology Austria, A-3400 Klosterneuburg, Austria
| | - Clément Thomas
- Cytoskeleton and Cancer Progression, Laboratory of Experimental Cancer Research, Department of Oncology, Luxembourg Institute of Health, L-1526 Luxembourg, Luxembourg
| | - Markus Geisler
- Department of Biology, University of Fribourg, CH-1700 Fribourg, Switzerland Department of Plant and Microbial Biology, University of Zurich, CH-8008 Zurich, Switzerland
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Aryal B, Shimizu T, Kadono J, Furoi A, Komokata T, Inoue M, Ikeda S, Fukukura Y, Nakamura M, Yamakuchi M, Hashiguchi T, Imoto Y. A Switch in the Dynamics of Intra-Platelet VEGF-A from Cancer to the Later Phase of Liver Regeneration after Partial Hepatectomy in Humans. PLoS One 2016; 11:e0150446. [PMID: 26930285 PMCID: PMC4773068 DOI: 10.1371/journal.pone.0150446] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2016] [Accepted: 02/15/2016] [Indexed: 12/31/2022] Open
Abstract
Background Liver regeneration (LR) involves an early inductive phase characterized by the proliferation of hepatocytes, and a delayed angiogenic phase distinguished by the expansion of non-parenchymal compartment. The interest in understanding the mechanism of LR has lately shifted from the proliferation and growth of parenchymal cells to vascular remodeling during LR. Angiogenesis accompanied by LR exerts a pivotal role to accomplish the process. Vascular endothelial growth factor (VEGF) has been elucidated as the most dynamic regulator of angiogenesis. From this perspective, platelet derived/Intra-platelet (IP) VEGF-A should be associated with LR. Material and Methods Thirty-seven patients diagnosed with hepatocellular carcinoma and undergoing partial hepatectomy (PH) were enrolled in the study. Serum and IP VEGF-A was monitored preoperatively and at four weeks of PH. Liver volumetry was determined on computer models derived from computed tomography (CT) scan. Results Serum and IP VEGF-A was significantly elevated at four weeks of PH. Preoperative IP VEGF-A was higher in patients with advanced cancer and vascular invasion. Postoperative IP VEGF-A was higher after major liver resection. There was a statistically significant correlation between postoperative IP VEGF-A and the future remnant liver volume. Moreover, the soluble vascular endothelial growth factor receptor-1 (sVEGFR1) was distinctly down-regulated suggesting a fine-tuned angiogenesis at the later phase of LR. Conclusion IP VEGF-A is overexpressed during later phase of LR suggesting its implications in inducing angiogenesis during LR.
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Affiliation(s)
- Bibek Aryal
- Cardiovascular and Gastroenterological Surgery, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima, Japan
| | - Toshiaki Shimizu
- Department of Laboratory and Vascular Medicine, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima, Japan
| | - Jun Kadono
- Cardiovascular and Gastroenterological Surgery, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima, Japan
| | - Akira Furoi
- Department of Surgery, Kirishima Medical Center, Kirishima, Japan
| | - Teruo Komokata
- Department of Surgery, Kagoshima Medical Center, National Hospital Organization, Kagoshima, Japan
| | - Maki Inoue
- Department of Surgery, Kirishima Medical Center, Kirishima, Japan
| | - Shunichiro Ikeda
- Department of Radiology, Kirishima Medical Center, Kirishima, Japan
| | - Yoshihiko Fukukura
- Department of Radiology, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima, Japan
| | - Masatoshi Nakamura
- Department of Clinical Laboratory, Kagoshima University Medical and Dental Hospital, Kagoshima, Japan
| | - Munekazu Yamakuchi
- Department of Laboratory and Vascular Medicine, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima, Japan
| | - Teruto Hashiguchi
- Department of Laboratory and Vascular Medicine, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima, Japan
- * E-mail:
| | - Yutaka Imoto
- Cardiovascular and Gastroenterological Surgery, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima, Japan
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Upreti D, Sapkota NP, Aryal B, Shakya S. Accumulation of Poly-hydroxy-butyric Acid (PHB) by Bacillus Strain Isolated from Paddy Field of Kathmandu University Premises. Nepal J Biotechnol 2015. [DOI: 10.3126/njb.v3i1.14221] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
In this study, the effect of applying nutrient limitation on the production of Poly-hydro-oxy-butyric acid (PHB) from soil bacteria was examined. PHB is a biodegradable polymer which provides a reserve of carbon and energy. PHB was extracted by chloroform dispersion method. The amount of synthesized PHB was determined as crotonic acid by spectrophotometry. We found that Nitrogen limiting condition stimulated PHB accumulation. The highest level of PHB accumulation was observed in DNB-6 strain which accumulated 31 % of the dry mass at 20 % glucose concentration. The probabilistic identification of bacteria by PIBwin software version 1.9.2 showed that the strain DNB-6 was close in nature to Bacillus cereus.Nepal Journal of Biotechnology. Dec. 2015 Vol. 3, No. 1: 2-5
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Yu C, Sun C, Shen C, Wang S, Liu F, Liu Y, Chen Y, Li C, Qian Q, Aryal B, Geisler M, Jiang DA, Qi Y. The auxin transporter, OsAUX1, is involved in primary root and root hair elongation and in Cd stress responses in rice (Oryza sativa L.). Plant J 2015; 83:818-30. [PMID: 26140668 DOI: 10.1111/tpj.12929] [Citation(s) in RCA: 101] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/16/2015] [Revised: 06/17/2015] [Accepted: 06/26/2015] [Indexed: 05/22/2023]
Abstract
Auxin and cadmium (Cd) stress play critical roles during root development. There are only a few reports on the mechanisms by which Cd stress influences auxin homeostasis and affects primary root (PR) and lateral root (LR) development, and almost nothing is known about how auxin and Cd interfere with root hair (RH) development. Here, we characterize rice osaux1 mutants that have a longer PR and shorter RHs in hydroponic culture, and that are more sensitive to Cd stress compared to wild-type (Dongjin). OsAUX1 expression in root hair cells is different from that of its paralogous gene, AtAUX1, which is expressed in non-hair cells. However, OsAUX1, like AtAUX1, localizes at the plasma membrane and appears to function as an auxin tranporter. Decreased auxin distribution and contents in the osaux1 mutant result in reduction of OsCyCB1;1 expression and shortened PRs, LRs and RHs under Cd stress, but may be rescued by treatment with the membrane-permeable auxin 1-naphthalene acetic acid. Treatment with the auxin transport inhibitors 1-naphthoxyacetic acid and N-1-naphthylphthalamic acid increased the Cd sensitivity of WT rice. Cd contents in the osaux1 mutant were not altered, but reactive oxygen species-mediated damage was enhanced, further increasing the sensitivity of the osaux1 mutant to Cd stress. Taken together, our results indicate that OsAUX1 plays an important role in root development and in responses to Cd stress.
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Affiliation(s)
- ChenLiang Yu
- State Key Laboratory of Plant Physiology and Biochemistry, College of Life Sciences, Zhejiang University, Hangzhou, 310058, China
| | - ChenDong Sun
- State Key Laboratory of Plant Physiology and Biochemistry, College of Life Sciences, Zhejiang University, Hangzhou, 310058, China
| | - Chenjia Shen
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou, 310036, China
| | - Suikang Wang
- State Key Laboratory of Plant Physiology and Biochemistry, College of Life Sciences, Zhejiang University, Hangzhou, 310058, China
| | - Fang Liu
- State Key Laboratory of Plant Physiology and Biochemistry, College of Life Sciences, Zhejiang University, Hangzhou, 310058, China
| | - Yan Liu
- State Key Laboratory of Plant Physiology and Biochemistry, College of Life Sciences, Zhejiang University, Hangzhou, 310058, China
| | - YunLong Chen
- State Key Laboratory of Plant Physiology and Biochemistry, College of Life Sciences, Zhejiang University, Hangzhou, 310058, China
| | - Chuanyou Li
- State Key Laboratory of Plant Genomics, National Center for Plant Gene Research, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing, 100101, China
| | - Qian Qian
- State Key Laboratory of Rice Biology, China National Rice Research Institute, Chinese Academy of Agricultural Sciences, Hangzhou, China
| | - Bibek Aryal
- Department of Biology - Plant Biology, University of Fribourg, Rue Albert Gockel 3, CH-1700, Fribourg, Switzerland
| | - Markus Geisler
- Department of Biology - Plant Biology, University of Fribourg, Rue Albert Gockel 3, CH-1700, Fribourg, Switzerland
| | - De An Jiang
- State Key Laboratory of Plant Physiology and Biochemistry, College of Life Sciences, Zhejiang University, Hangzhou, 310058, China
| | - YanHua Qi
- State Key Laboratory of Plant Physiology and Biochemistry, College of Life Sciences, Zhejiang University, Hangzhou, 310058, China
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Aryal B, Komokata T, Kadono J, Motodaka H, Ueno T, Furoi A, Imoto Y. First jejunal artery, an alternative graft for right hepatic artery reconstruction. World J Hepatol 2015; 7:721-724. [PMID: 25866610 PMCID: PMC4389001 DOI: 10.4254/wjh.v7.i4.721] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/17/2014] [Revised: 01/09/2015] [Accepted: 02/12/2015] [Indexed: 02/06/2023] Open
Abstract
Common bile duct cancer invading right hepatic artery is sometimes diagnosed intraoperatively. Excision and safe reconstruction of the artery with suitable graft is essential. Arterial reconstruction with autologous saphenous vein graft is the preferred method practiced routinely. However the right hepatic artery reconstruction has also been carried out with several other vessels like gastroduodenal artery, right gastroepiploic artery or the splenic artery. We report a case of 63-year-old man presenting with history of progressive jaundice, pruritus and impaired appetite. Following various imaging modalities including computed tomography, endoscopic retrograde cholangiopancreatography, magnetic resonance cholangiopancreatography, intraductal ultrasound extrahepatic bile duct cancer was diagnosed; however, none of those detected vessel invasion. Intraoperatively, right hepatic artery invasion was revealed. Right hepatic artery was resected and reconstructed with a graft harvested from the first jejunal artery (JA). Postoperative outcome was satisfactory with a long-term graft patency. First JA can be a reliable graft option for right hepatic artery reconstruction.
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Kafle D, Islam N, Aryal B, Adhikary P, Singh N. Inflammation and Oxidative Stress via Persistent Hyperglycemia in Progression of Diabetic Nephropathy in Type 2 Diabetes Mellitus. ACTA ACUST UNITED AC 2013. [DOI: 10.3126/jcmc.v3i1.8456] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Diabetic nephropathy is a major microvascular complication of diabetes, representing the leading cause of end stage renal disease in the world, and a major cause of morbidity and mortality in type 2 diabetic subjects. In the kidney, a number of pathways that generate reactive oxygen species (ROS) such as glycolysis, specific defects in the polyol pathway, uncoupling of nitric oxide synthase, xanthine oxidase, NAD (P) H oxidase, and advanced glycation have been identified as potentially major contributors to the pathogenesis of diabetic kidney disease. Changes in oxidative stress biomarkers, including superoxide dismutase, catalase, glutathione reductase, glutathione peroxidase, glutathione levels, vitamins, lipid peroxidation, nitrite concentration, nonenzymatic glycosylated proteins have been associated with diabetic nephropathy due to oxidative stress induced hyperglycemia. Oxidative stress in diabetes is responsible for endothelial dysfunction releasing inflammatory markers cytokines from the damaged renal tissue. Hyperglycemia induces intracellular reactive oxygen species in mesangial and tubular epithelial cells which induces cytokines, IL-6 and TNF-α production in glomerular mesangial and tubular epithelial cells in diabetic kidney. Antioxidants inhibit high glucose induced transforming growth factors and extra cellular matrix expression in glomerular mesangial and tubular epithelial cells, which ameliorate features of diabetic nephropathy, suggesting that oxidative stress plays an important role in diabetic renal injury causing diabetic nephropathy. Journal of Chitwan Medical College 2013; 3(1): 1-4 DOI: http://dx.doi.org/10.3126/jcmc.v3i1.8456
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Serrano M, Wang B, Aryal B, Garcion C, Abou-Mansour E, Heck S, Geisler M, Mauch F, Nawrath C, Métraux JP. Export of salicylic acid from the chloroplast requires the multidrug and toxin extrusion-like transporter EDS5. Plant Physiol 2013; 162:1815-21. [PMID: 23757404 PMCID: PMC3729763 DOI: 10.1104/pp.113.218156] [Citation(s) in RCA: 145] [Impact Index Per Article: 13.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/19/2013] [Accepted: 06/07/2013] [Indexed: 05/18/2023]
Abstract
Salicylic acid (SA) is central for the defense of plants to pathogens and abiotic stress. SA is synthesized in chloroplasts from chorismic acid by an isochorismate synthase (ICS1); SA biosynthesis is negatively regulated by autoinhibitory feedback at ICS1. Genetic studies indicated that the multidrug and toxin extrusion transporter ENHANCED DISEASE SUSCEPTIBILITY5 (EDS5) of Arabidopsis (Arabidopsis thaliana) is necessary for SA accumulation after biotic and abiotic stress, but so far it is not understood how EDS5 controls the biosynthesis of SA. Here, we show that EDS5 colocalizes with a marker of the chloroplast envelope and that EDS5 functions as a multidrug and toxin extrusion-like transporter in the export of SA from the chloroplast to the cytoplasm in Arabidopsis, where it controls the innate immune response. The location at the chloroplast envelope supports a model of the effect of EDS5 on SA biosynthesis: in the eds5 mutant, stress-induced SA is trapped in the chloroplast and inhibits its own accumulation by autoinhibitory feedback.
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Pambos M, Ng J, Loukes J, Matheson J, Aryal B, Adhikari S, Kerry S, Reid F, Oakeshott P. Demographics and diagnoses at rural health camps in Nepal: cross-sectional study. Fam Pract 2012; 29:528-33. [PMID: 22357578 DOI: 10.1093/fampra/cms010] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
BACKGROUND The charity 'Health Partnership Nepal' is committed to both improving global health care and providing medical training links between Nepal and the UK. This paper analyses data gathered at rural health camps. AIM To describe the demographics, diagnoses and treatments offered to people attending three rural health camps in Nepal during 2009. Design Cross-sectional study. Setting Three free health care camps established within the Nuwakot district of Nepal during April-May 2009. Camps were staffed by doctors including GPs, nurses and medical students from London and Kathmandu. METHODS Attendees had treatment sheets completed which recorded their demographics, diagnoses and dispensed medications. RESULTS The mean age of the 1903 consecutive patients attending was 42.8 years (range one month to 98 years) of whom 68.6% were female and 13.7% were children. The majority, 82.3%, were agricultural workers. For adults (n = 1574), the most frequent complaints were stomach pain 20.1%, musculoskeletal pain 19.3% and visual acuity problems 6.1%. Stomach pain was significantly more common in women than men [21.2% (236/1064) versus 14.5% (65/449) P < 0.01]. For children (n = 249), the most common diagnoses were helminthiasis 10.4%, conjunctivitis 7.6% and upper respiratory tract infection 7.2%. Overall, opthalmological, gastroenterological and rheumatological diagnoses were significantly more common in Nepalese than UK general practice patients. Of 1109 recorded prescriptions, the most common were multivitamins 23%, oral analgesics 15% and oral antibiotics 14%. CONCLUSIONS There is a considerable unmet disease burden within rural districts of Nepal particularly for stomach pain, musculoskeletal pain and visual acuity problems. When planning similar rurally based health camps, we recommend recruiting GPs and ophthalmologists.
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Affiliation(s)
- Michael Pambos
- Population Health Sciences and Education, St. George's, University of London, London, UK.
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Aryal B, Adhikary K, Khadija M, Lee C, Schifter D, Feldmeier J, Parsai E. SU-FF-T-225: Utilization of Thebes II Linear Ion-Chamber Array to Calculate Wedge Angle Using a Single Exposure. Med Phys 2005. [DOI: 10.1118/1.1997953] [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: 11/07/2022] Open
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Basnyat B, Subedi D, Sleggs J, Lemaster J, Bhasyal G, Aryal B, Subedi N. Disoriented and ataxic pilgrims: an epidemiological study of acute mountain sickness and high-altitude cerebral edema at a sacred lake at 4300 m in the Nepal Himalayas. Wilderness Environ Med 2000; 11:89-93. [PMID: 10921358 DOI: 10.1580/1080-6032(2000)011[0089:daapae]2.3.co;2] [Citation(s) in RCA: 77] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
OBJECTIVE To determine the incidence of high-altitude cerebral edema (HACE), acute mountain sickness (AMS), and high-altitude pulmonary edema (HAPE) in pilgrims. Although it is well known that western trekkers suffer from acute mountain sickness (AMS) in the Himalayas, not much is documented about the incidence of AMS in the local population of Nepal that go to high altitude. METHODS The design was a randomized study set at a sacred high-altitude lake at 4300 m at Gosainkund in the Nepal Himalayas. There was a control study at 1300 m at Pashupatinath in Kathmandu, Nepal. The subjects were pilgrims of different ethnic Nepali backgrounds. The Lake Louise consensus for AMS, HACE, and HAPE was used, and oxygen saturation with a pulse oximeter was performed on HACE subjects. RESULTS Out of 5000 pilgrims, 228 were randomly chosen. Sixty-eight percent had AMS, 31% had HACE, and 5% had HAPE. The mean oxygen saturation of HACE subjects at that altitude was 77%, 87% being normal for 4300 m altitude. Seventy-three percent of the study population were men, yet women had a significantly higher rate of AMS (odds ratio, 4.34; 95% confidence interval, 1.83-10.68), HACE (odds ratio 3.15, confidence interval 1.62-6.12), and HAPE (odds ratio, 5.2; 95% confidence interval, 1.24-24.73). CONCLUSIONS Such a high incidence of HACE in an epidemiological study using the Lake Louise criteria has, to our knowledge, not been reported before. High-altitude pilgrims, especially women pilgrims in this study, seem to be a very susceptible group. Preventive measures in these pilgrims need to be adopted to avoid AMS, specifically life-threatening HACE and HAPE.
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Affiliation(s)
- B Basnyat
- Nepal International Clinic, Patan Hospital.
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