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Navarosh J, Pushker N, Xess I, Singh L, Bajaj MS, Kashyap S, Thakar A. Correlation of serum galactomannan antigen with diagnosis and response to voriconazole in orbital/sino-orbital invasive aspergillosis. Int Ophthalmol 2021; 41:2635-2638. [PMID: 34110546 DOI: 10.1007/s10792-021-01848-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2020] [Accepted: 04/08/2021] [Indexed: 11/25/2022]
Affiliation(s)
- J Navarosh
- Oculoplasty and Pediatric Ophthalmology Services, Dr. R. P. Centre for Ophthalmic Sciences, All India Institute of Medical Sciences, New Delhi, 110 029, India
| | - N Pushker
- Oculoplasty and Pediatric Ophthalmology Services, Dr. R. P. Centre for Ophthalmic Sciences, All India Institute of Medical Sciences, New Delhi, 110 029, India.
| | - I Xess
- Department of Microbiology, All India Institute of Medical Sciences, New Delhi, 110 029, India
| | - L Singh
- Ocular Pathology, Dr. R. P. Centre for Ophthalmic Sciences, All India Institute of Medical Sciences, New Delhi, 110 029, India
- Department of Pediatrics, All India Institute of Medical Sciences, New Delhi, 110 029, India
| | - M S Bajaj
- Oculoplasty and Pediatric Ophthalmology Services, Dr. R. P. Centre for Ophthalmic Sciences, All India Institute of Medical Sciences, New Delhi, 110 029, India
| | - S Kashyap
- Ocular Pathology, Dr. R. P. Centre for Ophthalmic Sciences, All India Institute of Medical Sciences, New Delhi, 110 029, India
| | - A Thakar
- Department of ENT, All India Institute of Medical Sciences, New Delhi, 110 029, India
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Jha J, Singh MK, Singh L, Pushker N, Lomi N, Meel R, Chosdol K, Sen S, Bakhshi S, Kashyap S. Association of TYRP1 with hypoxia and its correlation with patient outcome in uveal melanoma. Clin Transl Oncol 2021; 23:1874-1884. [PMID: 33811629 DOI: 10.1007/s12094-021-02597-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2021] [Accepted: 03/12/2021] [Indexed: 11/30/2022]
Abstract
PURPOSE Molecular mechanisms of uveal melanoma development in association with high pigmentation are unclear. Tyrosinase Related Protein (TYRP1) is not only one of the important melanogenesis marker that contributes to melanin synthesis, but can also prevents the melanocyte death. The induction of melanogenesis leads to induction of HIF-1α which can affect the behavior of melanoma cells and its surrounding environment. The aim of our study was to determine the expression of TYRP1 and HIF-1α at the protein and RNA level and determine its prognostic significance. METHODS In the present study, the expression of TYRP1 and HIF-1α was investigated on 61 formalin-fixed paraffin-embedded choroidal melanoma samples by immunohistochemistry. Fresh 50 samples were validated by real-time PCR. Results were correlated with clinicopathological parameters and Kaplan-Meier was performed to determine the prognostic significance. RESULTS High immunoexpression of TYRP1 and HIF-1α was present in 61 and 54% of patients, respectively. Both TYRP1 and HIF-1α correlated well with high pigmentation and BAP1 (BRCA1 Associated Protein-1) loss (p < 0.05) at IHC level as well as transcriptional level. There was reduced metastatic free survival in patients with necrosis and this was statistically significant (p = 0.010). CONCLUSION Our findings indicate that TYRP1 can be used as a potential biomarker in the development of targeted therapy in UM. Further studies on melanogenesis markers associated with TYRP1 could provide us a better understanding in this field.
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Affiliation(s)
- J Jha
- Department of Ocular Pathology, Dr.R.P.Centre for Ophthalmic Sciences, All India Institute of Medical Sciences, New Delhi, India
| | - M K Singh
- Department of Dermatology, University of Wisconsin, Madison, USA
| | - L Singh
- Department of Paediatrics, All India Institute of Medical Sciences, New Delhi, India
| | - N Pushker
- Department of Ophthalmology, Dr.R.P.Centre for Ophthalmic Sciences, All India Institute of Medical Sciences, New Delhi, India
| | - N Lomi
- Department of Ophthalmology, Dr.R.P.Centre for Ophthalmic Sciences, All India Institute of Medical Sciences, New Delhi, India
| | - R Meel
- Department of Ophthalmology, Dr.R.P.Centre for Ophthalmic Sciences, All India Institute of Medical Sciences, New Delhi, India
| | - K Chosdol
- Department of Biochemistry, All India Institute of Medical Sciences, New Delhi, India
| | - S Sen
- Department of Ocular Pathology, Dr.R.P.Centre for Ophthalmic Sciences, All India Institute of Medical Sciences, New Delhi, India
| | - S Bakhshi
- Department of Medical Oncology, All India Institute of Medical Sciences, New Delhi, India
| | - S Kashyap
- Department of Ocular Pathology, Dr.R.P.Centre for Ophthalmic Sciences, All India Institute of Medical Sciences, New Delhi, India.
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Singh L, Singh M, Rizvi M, Kashyap S. 16P PD-1/PD-L1 expression in uveal melanoma: Prognostic significance with tumour-infiltrating lymphocytes and clinicopathological parameters. Ann Oncol 2020. [DOI: 10.1016/j.annonc.2020.10.501] [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] [Indexed: 11/16/2022] Open
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Singh MK, Singh L, Pushker N, Chosdol K, Bakhshi S, Meel R, Sen S, Kashyap S. Constitutive expression of c-REL in uveal melanoma patients: correlation with clinicopathological parameters and patient outcome. Clin Transl Oncol 2020; 22:1193-1204. [PMID: 31768922 DOI: 10.1007/s12094-019-02247-z] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2019] [Accepted: 11/12/2019] [Indexed: 12/12/2022]
Abstract
PURPOSE Uveal melanoma (UM) is the most common intraocular cancer with a high mortality rate that requires new research in the field of prevention and treatment. c-REL is a member of the nuclear factor κB (NF-κB) transcription factor family and an emerging regulator of tumorigenesis. Therefore, the objective of the study is to evaluate the constitutive expression of c-REL in uveal melanoma patients and its prognostic significance. METHODS Detection of c-REL expression was carried out by immunohistochemistry in all 75 patients, and qRT-PCR performed on 58 fresh cases of uveal melanoma along with IL-6 status. Immunoblot was performed to validate immunohistochemistry results. Expression of c-REL protein correlated with clinicopathological parameters and overall survival of patients. RESULTS Immunohistochemistry results revealed nuclear expression of the c-REL protein (56%) in our cases. Out of 75 cases, 31 cases showed nuclear expression, and 11 cases had cytoplasmic expression. qRT-PCR showed upregulation of the REL gene in 56.89% cases at the transcriptional level. There was a statistically significant difference in the overall survival of patients with c-REL nuclear immunopositivity (p = 0.0048). On multivariate analysis, scleral invasion and c-REL nuclear expression found to be an independent prognostic factor (p < 0.05) CONCLUSIONS: To the best of our knowledge, this was the first study reporting the expression of the c-REL protein in uveal melanoma. Strong nuclear immunoexpression of c-Rel suggests NFκB pathway activation which might be involved in the progression of the disease. Differential expression of c-REL protein may be used as an attractive target for the development of anticancer strategies.
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Affiliation(s)
- M K Singh
- Department of Ocular Pathology, Dr. R. P. Centre for Ophthalmic Sciences, All India Institute of Medical Sciences, New Delhi, India
| | - L Singh
- Departrment of Biosciences, JMI, New Delhi, India
| | - N Pushker
- Department of Ophthalmology, Dr. R. P. Centre for Ophthalmic Sciences, All India Institute of Medical Sciences, New Delhi, India
| | - K Chosdol
- Department of Biochemistry, AIIMS, New Delhi, India
| | - S Bakhshi
- Department of Medical Oncology, IRCH, AIIMS, New Delhi, India
| | - R Meel
- Department of Ophthalmology, Dr. R. P. Centre for Ophthalmic Sciences, All India Institute of Medical Sciences, New Delhi, India
| | - S Sen
- Department of Ocular Pathology, Dr. R. P. Centre for Ophthalmic Sciences, All India Institute of Medical Sciences, New Delhi, India
| | - S Kashyap
- Department of Ocular Pathology, Dr. R. P. Centre for Ophthalmic Sciences, All India Institute of Medical Sciences, New Delhi, India.
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Chindamporn P, Bena J, Wang L, Zajichek A, Milinovich A, Kaw R, Kashyap S, Cetin D, Aminian A, Kempke N, Foldvary-Schaefer N, Aboussouan LS, Mehra R. 0583 Obesity-Associated Sleep Hypoventilation Syndrome and Adverse Post-Operative Bariatric Surgery Outcomes. Sleep 2020. [DOI: 10.1093/sleep/zsaa056.580] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Introduction
Although obesity hypoventilation syndrome (OHS) is associated with right ventricular dysfunction and increased mortality, its contribution to post-bariatric surgery risk remains unclear due to non-systematic OHS assessments. We hypothesize that patients with obesity-associated sleep hypoventilation (OASH) have increased adverse post-bariatric surgery outcomes than those without.
Methods
Patients undergoing polysomnography (PSG) prior to bariatric surgery at the Cleveland Clinic from 2011-2018 were retrospectively examined. OASH was defined by body mass index (BMI) ≥30kg/m2 and either PSG-based end-tidal CO2 ≥45mmHg or serum bicarbonate ≥27mEq/L. The following were considered individually and as a composite outcome: ICU stay, re-intubation, tracheostomy, discharge disposition or 30-day readmission. All-cause mortality was also examined. Outcomes were compared using two-sample t-test or Wilcoxon rank sum test and Chi-square or Fisher exact test. A multivariable logistic regression model included age, sex, BMI, apnea hypopnea index(AHI) and diabetes to examine OAHS and the composite outcome. All-cause mortality was compared using Kaplan-Meier estimation and hazard ratios from Cox proportional hazards models. SAS software (version 9.4) was used with overall significance level of 0.05.
Results
The sample comprised 1665 patients: age 45.2±12 years, 20.4% male, BMI=48.7±9 kg/m2, and 63.6% Caucasian. OASH prevalence was 68.5%. OAHS patients were older and more likely to be male with higher BMI, AHI and HbA1c. Although some individual outcomes were higher in OASH vs. non-OASH, findings were not statistically significant: re-intubation (1.5%vs.1.3%, p=0.81) and 30-day readmission (13.8% vs.11.3%, p=0.16). The composite outcome remained significantly associated with OAHS in the multivariable model: OR=1.36, 95%CI:1.005,1.845. Mortality was 2% in OASH and not significantly higher than non-OAHS (HR=1.39, 95%CI:0.56,3.42).
Conclusion
In this largest sample to date of systematically phenotyped OASH in patients undergoing bariatric surgery, we identify increased post-operative morbidity in those with OASH. Further study is needed to identify whether peri-operative treatment of OASH improves surgical outcomes.
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Affiliation(s)
- P Chindamporn
- Sleep Disorders Center, Neurological Institute, Cleveland Clinic, Cleveland, OH
| | - J Bena
- Department of Quantitative Health Sciences, Cleveland Clinic, Cleveland, OH
| | - L Wang
- Department of Quantitative Health Sciences, Cleveland Clinic, Cleveland, OH
| | - A Zajichek
- Department of Quantitative Health Sciences, Cleveland Clinic, Cleveland, OH
| | - A Milinovich
- Department of Quantitative Health Sciences, Cleveland Clinic, Cleveland, OH
| | - R Kaw
- Medicine Institute, Cleveland Clinic, Cleveland, OH
| | - S Kashyap
- Endocrinology, Cleveland Clinic, Cleveland, OH
| | - D Cetin
- Obesity Medicine Specialist, Bariatric Metabolic Institute, Cleveland Clinic, Cleveland, OH
| | - A Aminian
- Bariatric and Metabolic Institute, Department of General Surgery, Cleveland Clinic, Cleveland, OH
| | - N Kempke
- Sleep Disorders Center, Neurological Institute, Cleveland Clinic, Cleveland, OH
| | - N Foldvary-Schaefer
- Sleep Disorders Center, Neurological Institute, Cleveland Clinic, Cleveland, OH
| | - L S Aboussouan
- Sleep Disorders Center, Neurological Institute, Cleveland Clinic, Cleveland, OH
| | - R Mehra
- Sleep Disorders Center, Neurological Institute, Cleveland Clinic, Cleveland, OH
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Singh M, Kashyap S, Singh L, Pushker N, Bakhshi S, Sen S. Loss of BAP-1 influences the activation of p52 and RelB proteins in the Inflammatory microenvironment of uveal melanoma. Ann Oncol 2019. [DOI: 10.1093/annonc/mdz452.015] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Singh L, Singh M, Rizvi M, Pushker N, Sen S, Kashyap S. Differential expression patterns of immune checkpoint markers in tumour-stromal microenvironment of primary and chemoreduced retinoblastoma. Ann Oncol 2019. [DOI: 10.1093/annonc/mdz447.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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8
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Jha J, Pushker N, Singh M, Singh L, Sen S, Kaur J, Kashyap S. Association of BAP1 with ATR protein and their clinical significance with patient outcome in uveal melanoma. Ann Oncol 2019. [DOI: 10.1093/annonc/mdz429.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Jha J, Singh M, Singh L, Pushker N, Sen S, Kashyap S. Synergistic role of BAP1 and DNA damage response pathway in uveal melanoma and its prognostic significance. Ann Oncol 2019. [DOI: 10.1093/annonc/mdz269.019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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10
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Kashyap S, Singh M, Singh L, Pushker N, Sen S, Meel R, Bakhshi S, Chawla B, Kaur J. Prognostic significance of c-Rel/p50 heterodimer in the tumor microenvironment of uveal melanoma. Ann Oncol 2019. [DOI: 10.1093/annonc/mdz269.018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Kashyap S, Patel A, Ali R, Morreale C, Baksh A, Mekhaiel E. TRACHEOESOPHAGEAL FISTULA AFTER CHEMOTHERAPY IN PRIMARY MEDIASTINAL B-CELL LYMPHOMA. Chest 2019. [DOI: 10.1016/j.chest.2019.04.045] [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: 10/26/2022] Open
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Patel A, Kashyap S, Anupama S. CAUTION WITH THE USE OF PERCUTANEOUS CORONARY INTERVENTION IN PATIENTS WITH SPONTANEOUS CORONARY ARTERY DISSECTION. Chest 2019. [DOI: 10.1016/j.chest.2019.04.032] [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: 11/28/2022] Open
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Fatima A, Shastri P, Ali R, Kashyap S, Abellard A, Chinni S, Anand N, Mataria M. DIFFUSE ALVEOLAR HEMORRHAGE: A RARE CASE OF PULMONARY RENAL SYNDROME IN THE BACKGROUND OF SEROPOSITIVE RHEUMATOID ARTHRITIS. Chest 2019. [DOI: 10.1016/j.chest.2019.02.268] [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: 10/27/2022] Open
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Singh L, Singh M, Pushker N, Bakhshi S, Rizvi M, Sen S, Kashyap S. Immune checkpoints and T-lymphocytes as immunotherapeutic target in the treatment of sebaceous gland carcinoma. Ann Oncol 2018. [DOI: 10.1093/annonc/mdy288.064] [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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15
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Singh M, Meel R, Pushker N, Sen S, Chodsol K, Bakhshi S, Kashyap S. Activation of non-canonical NFκB (NC-NFκB) pathway in inflammatory environment of uveal melanoma. Ann Oncol 2018. [DOI: 10.1093/annonc/mdy289.029] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Jha J, Singh M, Pushker N, Sen S, Kashyap S. ATM as a DNA damage response protein in uveal melanoma: Association with clinicopathological factors and prognostic outcome. Ann Oncol 2018. [DOI: 10.1093/annonc/mdy304.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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17
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Singh L, Kashyap S, Pushker N, Bakhshi S, Sen S, Rizvi M. Expression pattern of immune checkpoints programmed death (PD-1) and programmed death-ligand (PD-L1) in retinoblastoma and its prognostic significance. Ann Oncol 2017. [DOI: 10.1093/annonc/mdx711.017] [Citation(s) in RCA: 2] [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] [Indexed: 11/13/2022] Open
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Bedaiwy M, Maithripala S, Durland U, Havelock J, Kashyap S, Hitkari J, Lisonkova S. Reproductive outcomes of couples with recurrent pregnancy loss due to parental chromosome rearrangement. Fertil Steril 2016. [DOI: 10.1016/j.fertnstert.2016.07.970] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Rajeev A, Tumia N, Karn K, Kashyap S, Mayne D. Postoperative pain relief and functional outcome following total knee arthroplasty - a prospective comparative audit of three analgesic regimes. Acta Orthop Belg 2016; 82:265-270. [PMID: 27682287] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Pain control plays a key role in joint-replacement -surgery. As a surgeon the challenge is to reduce pain to an acceptable level in the post-operative period. The aim of the study was to assess the efficacy of bolus -local anaesthesia, infusion in to the surgical site and nerve blocks with femoral nerve catheter and its functional outcome. A prospective audit of 114 patients undergoing total knee arthroplasty were carried out.The patients were divided in to three groups : Group 1 (n = 27) received a bolus injection of 20 ml 0.25% levobupivacaine + 10 ml 0.25%bupivacaine + adrenaline + 30 ml saline. Group 2 (n = 39) received a bolus injection as on group 1 with 240 ml 0.25% bupivacaine infusion and 5 ml/hour using a Pain Buster pump. Group 3 (n = 48) received 30 ml 0.125% levobupivacaine to femoral (3-in-1) block with 30 ml 0.25% levobupivacaine to -sciatic nerve and introduction of a femoral nerve catheter. All patients were prescribed paracetamol 1 g QDS, Oxycontin 20 mg BD and Ibuprofen post -operatively. Pain was assessed with a Visual Analog Scale (VAS). The incidence of PONV was measured by PONY intensity score. The mean post-op VAS score for Group 3 was 4. The demand of oxynorm and NSAID were minimal in Group 3. The mean in patient stay for Group 3 was 3.1 days. The PONV intensity score was > 50 for 9 (36%) in Group 1, 15 (40%) in Group 2 and 9 (20%) in Group 3. There was loss of 20-30 degrees of flexion movements in Group 3 in the first 4 to 6 days post-op. Our study demonstrated that Regime 3 with the use of nerve blocks and femoral nerve catheter has given the maximum pain relief and good functional outcome following total knee replacement.
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Venugopal R, Sen S, Kashyap S, Sharma A, Agarwal T, Sharma N. Expression of Tissue inhibitor of metalloproteinase in ocular Stevens-Johnson Syndrome: An Immunohistochemical Study. Acta Ophthalmol 2015. [DOI: 10.1111/j.1755-3768.2015.0306] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- R. Venugopal
- Ophthalmology; Dr. R.P. Centre for Ophthalmic Sciences; All India Institute of Medical Sciences; New Delhi India
| | - S. Sen
- Ocular Pathology; Dr. R.P. Centre for Ophthalmic Sciences; All India Institute of Medical Sciences; New Delhi India
| | - S. Kashyap
- Ocular Pathology; Dr. R.P. Centre for Ophthalmic Sciences; All India Institute of Medical Sciences; New Delhi India
| | - A. Sharma
- Ocular Pathology; Dr. R.P. Centre for Ophthalmic Sciences; All India Institute of Medical Sciences; New Delhi India
| | - T. Agarwal
- Ophthalmology; Dr. R.P. Centre for Ophthalmic Sciences; All India Institute of Medical Sciences; New Delhi India
| | - N. Sharma
- Ophthalmology; Dr. R.P. Centre for Ophthalmic Sciences; All India Institute of Medical Sciences; New Delhi India
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Bharati P, Bharti A, Bharty M, Singh N, Kashyap S, Singh UP, Butcher R. Cu(II), Zn(II) and Mn(II) complexes of NNS tridentate and Pd(II) complex of NN(μ-S) tetradentate thiobenzyl esters: Synthesis, spectral and X-ray characterization. Polyhedron 2015. [DOI: 10.1016/j.poly.2015.05.015] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Jayaraj P, Sen S, Sharma A, Chosdol K, Kashyap S, Rai A, Pushker N, Bajaj M. Eyelid sebaceous carcinoma: a novel mutation in lymphoid enhancer-binding factor-1. Br J Dermatol 2015; 173:811-4. [DOI: 10.1111/bjd.13706] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- P. Jayaraj
- Department of Ocular Pathology; Dr Rajendra Prasad Centre for Ophthalmic Sciences; All India Institute of Medical Sciences; New Delhi India
| | - S. Sen
- Department of Ocular Pathology; Dr Rajendra Prasad Centre for Ophthalmic Sciences; All India Institute of Medical Sciences; New Delhi India
| | - A. Sharma
- Department of Ocular Microbiology; Dr Rajendra Prasad Centre for Ophthalmic Sciences; All India Institute of Medical Sciences; New Delhi India
| | - K. Chosdol
- Department of Biochemistry; Dr Rajendra Prasad Centre for Ophthalmic Sciences; All India Institute of Medical Sciences; New Delhi India
| | - S. Kashyap
- Department of Ocular Pathology; Dr Rajendra Prasad Centre for Ophthalmic Sciences; All India Institute of Medical Sciences; New Delhi India
| | - A. Rai
- National Centre for Disease Control; Division of Biochemistry and Biotechnology; New Delhi India
| | - N. Pushker
- Ophthalmoplasty Service; Dr Rajendra Prasad Centre for Ophthalmic Sciences; All India Institute of Medical Sciences; New Delhi India
| | - M. Bajaj
- Ophthalmoplasty Service; Dr Rajendra Prasad Centre for Ophthalmic Sciences; All India Institute of Medical Sciences; New Delhi India
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Freissinet C, Glavin DP, Mahaffy PR, Miller KE, Eigenbrode JL, Summons RE, Brunner AE, Buch A, Szopa C, Archer PD, Franz HB, Atreya SK, Brinckerhoff WB, Cabane M, Coll P, Conrad PG, Des Marais DJ, Dworkin JP, Fairén AG, François P, Grotzinger JP, Kashyap S, ten Kate IL, Leshin LA, Malespin CA, Martin MG, Martin-Torres FJ, McAdam AC, Ming DW, Navarro-González R, Pavlov AA, Prats BD, Squyres SW, Steele A, Stern JC, Sumner DY, Sutter B, Zorzano MP. Organic molecules in the Sheepbed Mudstone, Gale Crater, Mars. J Geophys Res Planets 2015; 120:495-514. [PMID: 26690960 PMCID: PMC4672966 DOI: 10.1002/2014je004737] [Citation(s) in RCA: 149] [Impact Index Per Article: 16.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/03/2014] [Revised: 01/12/2015] [Accepted: 02/13/2015] [Indexed: 05/04/2023]
Abstract
UNLABELLED The Sample Analysis at Mars (SAM) instrument on board the Mars Science Laboratory Curiosity rover is designed to conduct inorganic and organic chemical analyses of the atmosphere and the surface regolith and rocks to help evaluate the past and present habitability potential of Mars at Gale Crater. Central to this task is the development of an inventory of any organic molecules present to elucidate processes associated with their origin, diagenesis, concentration, and long-term preservation. This will guide the future search for biosignatures. Here we report the definitive identification of chlorobenzene (150-300 parts per billion by weight (ppbw)) and C2 to C4 dichloroalkanes (up to 70 ppbw) with the SAM gas chromatograph mass spectrometer (GCMS) and detection of chlorobenzene in the direct evolved gas analysis (EGA) mode, in multiple portions of the fines from the Cumberland drill hole in the Sheepbed mudstone at Yellowknife Bay. When combined with GCMS and EGA data from multiple scooped and drilled samples, blank runs, and supporting laboratory analog studies, the elevated levels of chlorobenzene and the dichloroalkanes cannot be solely explained by instrument background sources known to be present in SAM. We conclude that these chlorinated hydrocarbons are the reaction products of Martian chlorine and organic carbon derived from Martian sources (e.g., igneous, hydrothermal, atmospheric, or biological) or exogenous sources such as meteorites, comets, or interplanetary dust particles. KEY POINTS First in situ evidence of nonterrestrial organics in Martian surface sediments Chlorinated hydrocarbons identified in the Sheepbed mudstone by SAM Organics preserved in sample exposed to ionizing radiation and oxidative condition.
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Affiliation(s)
- C Freissinet
- Solar System Exploration Division, NASA Goddard Space Flight CenterGreenbelt, Maryland, USA
- NASA Postdoctoral Program, Oak Ridge Associated UniversitiesOak Ridge, Tennessee, USA
- Correspondence to:
C. Freissinet and P. R. Mahaffy,, ,
| | - D P Glavin
- Solar System Exploration Division, NASA Goddard Space Flight CenterGreenbelt, Maryland, USA
| | - P R Mahaffy
- Solar System Exploration Division, NASA Goddard Space Flight CenterGreenbelt, Maryland, USA
- Correspondence to:
C. Freissinet and P. R. Mahaffy,, ,
| | - K E Miller
- Department of Earth, Atmospheric and Planetary Sciences, Massachusetts Institute of TechnologyCambridge, Massachusetts, USA
| | - J L Eigenbrode
- Solar System Exploration Division, NASA Goddard Space Flight CenterGreenbelt, Maryland, USA
| | - R E Summons
- Department of Earth, Atmospheric and Planetary Sciences, Massachusetts Institute of TechnologyCambridge, Massachusetts, USA
| | - A E Brunner
- Solar System Exploration Division, NASA Goddard Space Flight CenterGreenbelt, Maryland, USA
- Center for Research and Exploration in Space Science & Technology, University of MarylandCollege Park, Maryland, USA
| | - A Buch
- Laboratoire de Génie des Procédés et Matériaux, Ecole Centrale ParisChâtenay-Malabry, France
| | - C Szopa
- Laboratoire Atmosphères, Milieux, Observations Spatiales, Pierre and Marie Curie University, Université de Versailles Saint-Quentin-en-Yvelines, and CNRSParis, France
| | - P D Archer
- Jacobs, NASA Johnson Space CenterHouston, Texas, USA
| | - H B Franz
- Solar System Exploration Division, NASA Goddard Space Flight CenterGreenbelt, Maryland, USA
- Center for Research and Exploration in Space Science & Technology, University of Maryland, Baltimore CountyBaltimore, Maryland, USA
| | - S K Atreya
- Department of Atmospheric, Oceanic and Space Sciences, University of MichiganAnn Arbor, Michigan, USA
| | - W B Brinckerhoff
- Solar System Exploration Division, NASA Goddard Space Flight CenterGreenbelt, Maryland, USA
| | - M Cabane
- Laboratoire Atmosphères, Milieux, Observations Spatiales, Pierre and Marie Curie University, Université de Versailles Saint-Quentin-en-Yvelines, and CNRSParis, France
| | - P Coll
- Laboratoire Interuniversitaire des Systèmes Atmosphériques, Université Paris-Est Créteil, Paris VII–Denis Diderot University, and CNRSCréteil, France
| | - P G Conrad
- Solar System Exploration Division, NASA Goddard Space Flight CenterGreenbelt, Maryland, USA
| | - D J Des Marais
- Exobiology Branch, NASA Ames Research CenterMoffett Field, California, USA
| | - J P Dworkin
- Solar System Exploration Division, NASA Goddard Space Flight CenterGreenbelt, Maryland, USA
| | - A G Fairén
- Department of Astronomy, Cornell UniversityIthaca, New York, USA
- Centro de Astrobiología, INTA-CSICMadrid, Spain
| | - P François
- Department of Atmospheric, Oceanic and Space Sciences, University of MichiganAnn Arbor, Michigan, USA
| | - J P Grotzinger
- Division of Geological and Planetary Sciences, California Institute of TechnologyPasadena, California, USA
| | - S Kashyap
- Solar System Exploration Division, NASA Goddard Space Flight CenterGreenbelt, Maryland, USA
- Center for Research and Exploration in Space Science & Technology, University of Maryland, Baltimore CountyBaltimore, Maryland, USA
| | - I L ten Kate
- Earth Sciences Department, Utrecht UniversityUtrecht, Netherlands
| | - L A Leshin
- Department of Earth and Environmental Sciences and School of Science, Rensselaer Polytechnic InstituteTroy, New York, USA
| | - C A Malespin
- Solar System Exploration Division, NASA Goddard Space Flight CenterGreenbelt, Maryland, USA
- Goddard Earth Sciences and Technologies and Research, Universities Space Research AssociationColumbia, Maryland, USA
| | - M G Martin
- Solar System Exploration Division, NASA Goddard Space Flight CenterGreenbelt, Maryland, USA
- Department of Chemistry, Catholic University of AmericaWashington, District of Columbia, USA
| | - F J Martin-Torres
- Instituto Andaluz de Ciencias de la Tierra (CSIC-UGR)Granada, Spain
- Division of Space Technology, Department of Computer Science, Electrical and Space Engineering, Luleå University of TechnologyKiruna, Sweden
| | - A C McAdam
- Solar System Exploration Division, NASA Goddard Space Flight CenterGreenbelt, Maryland, USA
| | - D W Ming
- Astromaterials Research and Exploration Science Directorate, NASA Johnson Space CenterHouston, Texas, USA
| | - R Navarro-González
- Instituto de Ciencias Nucleares, Universidad Nacional Autónoma de México, Ciudad UniversitariaMéxico City, Mexico
| | - A A Pavlov
- Solar System Exploration Division, NASA Goddard Space Flight CenterGreenbelt, Maryland, USA
| | - B D Prats
- Solar System Exploration Division, NASA Goddard Space Flight CenterGreenbelt, Maryland, USA
| | - S W Squyres
- Department of Astronomy, Cornell UniversityIthaca, New York, USA
| | - A Steele
- Geophysical Laboratory, Carnegie Institution of WashingtonWashington, District of Columbia, USA
| | - J C Stern
- Solar System Exploration Division, NASA Goddard Space Flight CenterGreenbelt, Maryland, USA
| | - D Y Sumner
- Department of Earth and Planetary Sciences, University of CaliforniaDavis, California, USA
| | - B Sutter
- Jacobs, NASA Johnson Space CenterHouston, Texas, USA
| | - M-P Zorzano
- Centro de Astrobiologia (INTA-CSIC)Madrid, Spain
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Freissinet C, Glavin DP, Mahaffy PR, Miller KE, Eigenbrode JL, Summons RE, Brunner AE, Buch A, Szopa C, Archer PD, Franz HB, Atreya SK, Brinckerhoff WB, Cabane M, Coll P, Conrad PG, Des Marais DJ, Dworkin JP, Fairén AG, François P, Grotzinger JP, Kashyap S, Ten Kate IL, Leshin LA, Malespin CA, Martin MG, Martin-Torres FJ, McAdam AC, Ming DW, Navarro-González R, Pavlov AA, Prats BD, Squyres SW, Steele A, Stern JC, Sumner DY, Sutter B, Zorzano MP. Organic molecules in the Sheepbed Mudstone, Gale Crater, Mars. J Geophys Res Planets 2015; 120:495-514. [PMID: 26690960 DOI: 10.1002/2015je004884.received] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 10/03/2014] [Revised: 01/12/2015] [Accepted: 02/13/2015] [Indexed: 05/25/2023]
Abstract
UNLABELLED The Sample Analysis at Mars (SAM) instrument on board the Mars Science Laboratory Curiosity rover is designed to conduct inorganic and organic chemical analyses of the atmosphere and the surface regolith and rocks to help evaluate the past and present habitability potential of Mars at Gale Crater. Central to this task is the development of an inventory of any organic molecules present to elucidate processes associated with their origin, diagenesis, concentration, and long-term preservation. This will guide the future search for biosignatures. Here we report the definitive identification of chlorobenzene (150-300 parts per billion by weight (ppbw)) and C2 to C4 dichloroalkanes (up to 70 ppbw) with the SAM gas chromatograph mass spectrometer (GCMS) and detection of chlorobenzene in the direct evolved gas analysis (EGA) mode, in multiple portions of the fines from the Cumberland drill hole in the Sheepbed mudstone at Yellowknife Bay. When combined with GCMS and EGA data from multiple scooped and drilled samples, blank runs, and supporting laboratory analog studies, the elevated levels of chlorobenzene and the dichloroalkanes cannot be solely explained by instrument background sources known to be present in SAM. We conclude that these chlorinated hydrocarbons are the reaction products of Martian chlorine and organic carbon derived from Martian sources (e.g., igneous, hydrothermal, atmospheric, or biological) or exogenous sources such as meteorites, comets, or interplanetary dust particles. KEY POINTS First in situ evidence of nonterrestrial organics in Martian surface sediments Chlorinated hydrocarbons identified in the Sheepbed mudstone by SAM Organics preserved in sample exposed to ionizing radiation and oxidative condition.
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Affiliation(s)
- C Freissinet
- Solar System Exploration Division, NASA Goddard Space Flight Center Greenbelt, Maryland, USA ; NASA Postdoctoral Program, Oak Ridge Associated Universities Oak Ridge, Tennessee, USA
| | - D P Glavin
- Solar System Exploration Division, NASA Goddard Space Flight Center Greenbelt, Maryland, USA
| | - P R Mahaffy
- Solar System Exploration Division, NASA Goddard Space Flight Center Greenbelt, Maryland, USA
| | - K E Miller
- Department of Earth, Atmospheric and Planetary Sciences, Massachusetts Institute of Technology Cambridge, Massachusetts, USA
| | - J L Eigenbrode
- Solar System Exploration Division, NASA Goddard Space Flight Center Greenbelt, Maryland, USA
| | - R E Summons
- Department of Earth, Atmospheric and Planetary Sciences, Massachusetts Institute of Technology Cambridge, Massachusetts, USA
| | - A E Brunner
- Solar System Exploration Division, NASA Goddard Space Flight Center Greenbelt, Maryland, USA ; Center for Research and Exploration in Space Science & Technology, University of Maryland College Park, Maryland, USA
| | - A Buch
- Laboratoire de Génie des Procédés et Matériaux, Ecole Centrale Paris Châtenay-Malabry, France
| | - C Szopa
- Laboratoire Atmosphères, Milieux, Observations Spatiales, Pierre and Marie Curie University, Université de Versailles Saint-Quentin-en-Yvelines, and CNRS Paris, France
| | - P D Archer
- Jacobs, NASA Johnson Space Center Houston, Texas, USA
| | - H B Franz
- Solar System Exploration Division, NASA Goddard Space Flight Center Greenbelt, Maryland, USA ; Center for Research and Exploration in Space Science & Technology, University of Maryland, Baltimore County Baltimore, Maryland, USA
| | - S K Atreya
- Department of Atmospheric, Oceanic and Space Sciences, University of Michigan Ann Arbor, Michigan, USA
| | - W B Brinckerhoff
- Solar System Exploration Division, NASA Goddard Space Flight Center Greenbelt, Maryland, USA
| | - M Cabane
- Laboratoire Atmosphères, Milieux, Observations Spatiales, Pierre and Marie Curie University, Université de Versailles Saint-Quentin-en-Yvelines, and CNRS Paris, France
| | - P Coll
- Laboratoire Interuniversitaire des Systèmes Atmosphériques, Université Paris-Est Créteil, Paris VII-Denis Diderot University, and CNRS Créteil, France
| | - P G Conrad
- Solar System Exploration Division, NASA Goddard Space Flight Center Greenbelt, Maryland, USA
| | - D J Des Marais
- Exobiology Branch, NASA Ames Research Center Moffett Field, California, USA
| | - J P Dworkin
- Solar System Exploration Division, NASA Goddard Space Flight Center Greenbelt, Maryland, USA
| | - A G Fairén
- Department of Astronomy, Cornell University Ithaca, New York, USA ; Centro de Astrobiología, INTA-CSIC Madrid, Spain
| | - P François
- Department of Atmospheric, Oceanic and Space Sciences, University of Michigan Ann Arbor, Michigan, USA
| | - J P Grotzinger
- Division of Geological and Planetary Sciences, California Institute of Technology Pasadena, California, USA
| | - S Kashyap
- Solar System Exploration Division, NASA Goddard Space Flight Center Greenbelt, Maryland, USA ; Center for Research and Exploration in Space Science & Technology, University of Maryland, Baltimore County Baltimore, Maryland, USA
| | - I L Ten Kate
- Earth Sciences Department, Utrecht University Utrecht, Netherlands
| | - L A Leshin
- Department of Earth and Environmental Sciences and School of Science, Rensselaer Polytechnic Institute Troy, New York, USA
| | - C A Malespin
- Solar System Exploration Division, NASA Goddard Space Flight Center Greenbelt, Maryland, USA ; Goddard Earth Sciences and Technologies and Research, Universities Space Research Association Columbia, Maryland, USA
| | - M G Martin
- Solar System Exploration Division, NASA Goddard Space Flight Center Greenbelt, Maryland, USA ; Department of Chemistry, Catholic University of America Washington, District of Columbia, USA
| | - F J Martin-Torres
- Instituto Andaluz de Ciencias de la Tierra (CSIC-UGR) Granada, Spain ; Division of Space Technology, Department of Computer Science, Electrical and Space Engineering, Luleå University of Technology Kiruna, Sweden
| | - A C McAdam
- Solar System Exploration Division, NASA Goddard Space Flight Center Greenbelt, Maryland, USA
| | - D W Ming
- Astromaterials Research and Exploration Science Directorate, NASA Johnson Space Center Houston, Texas, USA
| | - R Navarro-González
- Instituto de Ciencias Nucleares, Universidad Nacional Autónoma de México, Ciudad Universitaria México City, Mexico
| | - A A Pavlov
- Solar System Exploration Division, NASA Goddard Space Flight Center Greenbelt, Maryland, USA
| | - B D Prats
- Solar System Exploration Division, NASA Goddard Space Flight Center Greenbelt, Maryland, USA
| | - S W Squyres
- Department of Astronomy, Cornell University Ithaca, New York, USA
| | - A Steele
- Geophysical Laboratory, Carnegie Institution of Washington Washington, District of Columbia, USA
| | - J C Stern
- Solar System Exploration Division, NASA Goddard Space Flight Center Greenbelt, Maryland, USA
| | - D Y Sumner
- Department of Earth and Planetary Sciences, University of California Davis, California, USA
| | - B Sutter
- Jacobs, NASA Johnson Space Center Houston, Texas, USA
| | - M-P Zorzano
- Centro de Astrobiologia (INTA-CSIC) Madrid, Spain
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Bharati P, Bharti A, Chaudhari U, Bharty M, Kashyap S, Singh UP, Singh N. Trinuclear supramolecular Zn(II) complexes derived from N′-(pyridine carbonyl) hydrazine carboperthioates: Synthesis, structural characterization, luminescent properties and metalloaromaticity. Inorganica Chim Acta 2015. [DOI: 10.1016/j.ica.2014.10.005] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Caplan N, Stewart S, Kashyap S, Banaszkiewicz P, St Clair Gibson A, Kader D, Ewen A. The effect of total hip and hip resurfacing arthroplasty on vertical ground reaction force and impulse symmetry during a sit-to-stand task. Clin Biomech (Bristol, Avon) 2014; 29:1164-9. [PMID: 25293891 DOI: 10.1016/j.clinbiomech.2014.09.008] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/29/2014] [Revised: 09/18/2014] [Accepted: 09/18/2014] [Indexed: 02/07/2023]
Abstract
BACKGROUND The aim of this study was to determine the influence of total hip arthroplasty and hip resurfacing arthroplasty on limb loading symmetry before, and after, hip reconstruction surgery during a sit-to-stand task. METHODS Fourteen patients were recruited that were about to receive either a total hip prosthesis (n=7) or a hip resurfacing prosthesis (n=7), as well as matched controls. Patients performed a sit-to-stand movement before, 3 months after, and 12 months after surgery. Peak vertical ground reaction force and impulse were measured for each leg, from which ground reaction force and impulse symmetry ratios were calculated. FINDINGS Before surgery, hip resurfacing patients showed a small asymmetry which was not different to normal for ground reaction force (0.88(0.28) vs. 1.00(0.11); p=0.311) or impulse (0.87(0.29) vs. 0.99(0.09); p=0.324) symmetry ratios. Total hip patients offloaded their affected hip by 30% in terms of impulse symmetry ratio (0.71(0.36) vs. 0.99(0.23); p=0.018). At 3 months following surgery asymmetries were seen that were different to normal in both hip resurfacing patients for ground reaction force (0.77(0.16); p=0.007), and total hip patients for ground reaction force (0.70(0.15); p=0.018) and impulse (0.72(0.16); p=0.011) symmetry ratios. By 12 months after surgery total hip patients regained a symmetrical loading pattern for both ground reaction force (0.95(0.06); p=0.676) and impulse (1.00(0.06); p=0.702) symmetry ratios. Hip resurfacing patients, however, performed the task by overloading their operated hip, with impulse symmetry ratio being larger than normal (1.16(0.16); p=0.035). INTERPRETATION Physiotherapists should appreciate the need for early recovery of limb loading symmetry as well as subsequent differences in the responses observed with different prostheses.
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Affiliation(s)
- N Caplan
- Faculty of Health and Life Sciences, Northumbria University, Newcastle upon Tyne, UK.
| | - S Stewart
- Faculty of Health and Life Sciences, Northumbria University, Newcastle upon Tyne, UK
| | - S Kashyap
- Department of Trauma and Orthopaedics, Queen Elizabeth Hospital, Gateshead, UK
| | - P Banaszkiewicz
- Department of Trauma and Orthopaedics, Queen Elizabeth Hospital, Gateshead, UK
| | - A St Clair Gibson
- Faculty of Health and Life Sciences, Northumbria University, Newcastle upon Tyne, UK
| | - D Kader
- Department of Trauma and Orthopaedics, Queen Elizabeth Hospital, Gateshead, UK
| | - A Ewen
- Faculty of Health and Life Sciences, Northumbria University, Newcastle upon Tyne, UK
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Maciel TT, Merle E, Fricot A, Monteiro R, Moura IC, Seleznik G, Seeger H, Papandile A, Fu K, Poreci U, Czerkowicz J, Rabah D, Ranger A, Cohen CD, Lindenmeyer M, Chen J, Edenhofer I, Anders HJ, Lech M, Wuthrich RP, Ruddle NH, Moeller MJ, Regele H, Kozakowski N, Bauer J, Heikenwalder M, Browning JL, Segerer S, Kirsch AH, Artinger K, Rho E, Wolf AM, Cornez I, Eller P, Wolf D, Rosenkranz AR, Eller K, Rho E, Artinger K, Kirsch AH, Schaubettl C, Aringer I, Rosenkranz AR, Eller P, Eller K, Grande JP, Hartono SP, Kashyap S, Knudsen B. PATHOLOGY INFLAMMATION. Nephrol Dial Transplant 2014. [DOI: 10.1093/ndt/gfu119] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [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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Bharati P, Bharti A, Bharty M, Kashyap S, Singh U, Singh N. Synthesis, spectral and structural characterization of Ni(II), Cu(II), Zn(II), Cd(II) and Hg(II) complexes with 2-mercapto-5-methyl-1,3,4-thiadiazole: A Zn(II) complex acting as a new sensitive and selective fluorescent probe for the detection of Hg2+ in H2O–MeOH medium. Polyhedron 2013. [DOI: 10.1016/j.poly.2013.07.027] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Kashyap S, Kashyap K. Profile of lung cancer in predominantly Bidi smoking rural population of Northern Himachal Pradesh. Indian J Chest Dis Allied Sci 2013; 55:181. [PMID: 24380230] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
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Sharma S, Tandon R, Mohanty S, Kashyap S, Vanathi M. Phenotypic evaluation of severely damaged ocular surface after reconstruction by cultured limbal epithelial cell transplantation. Ophthalmic Res 2013; 50:59-64. [PMID: 23751337 DOI: 10.1159/000346868] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2012] [Accepted: 12/04/2012] [Indexed: 11/19/2022]
Abstract
OBJECTIVE To report the clinical outcome of autologous cultured limbal epithelial cell transplantation (CLECT) followed by deep anterior lamellar keratoplasty (DALK) in paediatric eyes and to correlate the clinical outcome with the phenotype of rejuvenated corneal epithelium. METHODS Four patients with total limbal stem cell deficiency (LSCD) underwent autologous CLECT. Cultivated cell sheets were transplanted onto the damaged ocular surface followed by DALK surgery. Excised corneal buttons were subjected to histopathological analysis. Data recorded included age, sex, laterality, nature of injury, follow-up period, severity of stem cell deficiency, visual acuity, Schirmer's test and impression cytology. RESULTS At a mean follow-up period of 19.5 ± 7.4 (range 9-26) months after CLECT, all 4 eyes showed epithelialized and clinically stabilized ocular surface. Manual DALK was performed in all 4 eyes, with a mean follow-up of 9.75 ± 4.5 (range 5-15) months. All eyes exhibited smooth and clear corneal epithelium with improved visual acuity. Excised corneal buttons demonstrated organized corneal epithelial morphology and showed expression of cornea-specific CK3/12 marker. CONCLUSION Restoration of severely damaged ocular surface following chemical injury by using 2-stage meticulous approaches offers a new modality for the treatment of severe LSCD. Transplantation of cultivated autologous limbal epithelial cell sheet followed by DALK surgery can efficiently restore the corneal phenotype with improved vision.
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Affiliation(s)
- S Sharma
- Cornea and Ocular Surface Services, Dr. Rajendra Prasad Centre for Ophthalmic Sciences, Stem Cell Facility, All India Institute of Medical Sciences, New Delhi, India
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Kashyap S. Computational Modeling Deduced Three Dimensional Structure of Cry1Ab16 Toxin from Bacillus thuringiensis AC11. Indian J Microbiol 2013; 52:263-9. [PMID: 23729892 DOI: 10.1007/s12088-011-0191-5] [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] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2010] [Accepted: 06/14/2011] [Indexed: 10/18/2022] Open
Abstract
The first theoretical structural model of newly reported Cry1Ab16 δ-endotoxin produced by Bacillus thuringiensis AC11 was predicted using homology modeling technique. Cry1Ab16 resembles the Cry1Aa protein structure by sharing a common three domains structure responsible in pore forming and specificity determination along with few structural deviations. The main differences between the two is in the length of loops, absence of α7b, α9a, α10b, α11a and presence of additional β12b, α13 components while α10a is spatially located at downstream position in Cry1Ab16. A better understanding of the 3D structure shall be helpful in the design of domain swapping and mutagenesis experiments aimed at improving toxicity.
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Affiliation(s)
- S Kashyap
- National Bureau of Agriculturally Important Microorganisms (ICAR), Kusmaur, Kaithauli, Mau Nath Bhanjan, 275101 India
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Jindal SK, Aggarwal AN, Gupta D, Ahmed Z, Gupta KB, Janmeja AK, Kashyap S, Singh M, Mohan A, Whig J. Tuberculous lymphadenopathy: a multicentre operational study of 6-month thrice weekly directly observed treatment. Int J Tuberc Lung Dis 2013; 17:234-9. [PMID: 23317960 DOI: 10.5588/ijtld.12.0333] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
SETTING Eight operational locations for the Revised National Tuberculosis Control Programme in six Indian states. OBJECTIVE To assess the 6-month efficacy of an intermittent thrice-weekly directly observed treatment (DOT) regimen for tuberculous peripheral adenopathy and the need for prolongation of treatment to 9 months for non-resolution of lymphadenopathy. DESIGN Patients aged >5 years with tuberculous lymphadenopathy were included in the study. Patients were evaluated for resolution at repeat visits following treatment. Those with poor resolution at 6 months were randomised to extended treatment up to 9 months or observation without additional treatment. RESULTS Resolution of lymphadenopathy was observed at the end of 6 months in 517/551 (93.8%) patients. There was a significant difference in response among patients with and those without the presence of systemic symptoms. There was no association between treatment response and number, size, site, consistency and matting of lymphadenopathy. No differences in response were seen in the remaining 34 patients with or without extended treatment. CONCLUSION The operational efficacy of 6-month thrice-weekly DOT for peripheral tubercular lymphadenopathy was satisfactory. There was no evidence of additional benefits of prolonging treatment to 9 months.
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Affiliation(s)
- S K Jindal
- Department of Pulmonary Medicine, Postgraduate Institute of Medical Education & Research, Chandigarh, India.
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Jayaraj P, Sen S, Sharma A, Chosdol K, Kashyap S, Rai A, Pushker N, Bajaj M, Ghose S. Epigenetic inactivation of the E-cadherin gene in eyelid sebaceous gland carcinoma. Br J Dermatol 2012; 167:583-90. [DOI: 10.1111/j.1365-2133.2012.10968.x] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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Hassouna F, Kashyap S, Laachachi A, Ball V, Chapron D, Toniazzo V, Ruch D. Peculiar reduction of graphene oxide into graphene after diffusion in exponentially growing polyelectrolyte multilayers. J Colloid Interface Sci 2012; 377:489-96. [PMID: 22503661 DOI: 10.1016/j.jcis.2012.03.054] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2011] [Revised: 02/14/2012] [Accepted: 03/19/2012] [Indexed: 11/30/2022]
Abstract
In the present work, in situ reduction of graphene oxide (GO) into graphene was preformed, after diffusion in exponentially growing polyelectrolyte multilayers, using sodium citrate as the reducing agent. First, the graphene oxide was obtained by treating a commercial grade of Expanded Graphite (EG). Based on XRD and Raman spectroscopy results, a complete exfoliation of graphene nanopellets down to one layer was achieved during the oxidation process. Secondly, the diffusion of GO was carried out in an exponentially growing polyelectrolyte multilayer film made from poly(diallyldimethylammonium chloride) as the polycation and from poly(acrylic acid) as the polyanion. Electrical conductivity of the GO based films was measured during the reduction process as a function of time. The conductivity reached values of the order of 10(-4) S cm(-1), whereas the pristine polyelectrolyte multilayer was highly insulating (∼10(-8) S cm(-1)). The conductivity also reached a maximal value after about 24 h of reduction and decreased for longer reduction duration. Some tentative explanations for this peculiar finding will be given.
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Affiliation(s)
- F Hassouna
- Advanced Materials and Structures, Centre de Recherche Public Henri Tudor, 66 rue de Luxembourg, L-4002 Esch-sur-Alzette, Luxembourg
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Kashyap S, Singh BD, Amla DV. Computational tridimensional protein modeling of Cry1Ab19 toxin from Bacillus thuringiensis BtX-2. J Microbiol Biotechnol 2012; 22:788-92. [PMID: 22573155 DOI: 10.4014/jmb.1106.06034] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022]
Abstract
We report the computational structural simulation of the Cry1Ab19 toxin molecule from B. thuringiensis BtX-2 based on the structure of Cry1Aa1 deduced by x-ray diffraction. Validation results showed that 93.5% of modeled residues are folded in a favorable orientation with a total energy Z-score of -8.32, and the constructed model has an RMSD of only 1.13. The major differences in the presented model are longer loop lengths and shortened sheet components. The overall result supports the hierarchical three-domain structural hypothesis of Cry toxins and will help in better understanding the structural variation within the Cry toxin family along with facilitating the design of domain-swapping experiments aimed at improving the toxicity of native toxins.
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Affiliation(s)
- Sudhanshu Kashyap
- National Bureau of Agriculturally Important Microorganisms-ICAR, Kusmaur, Kaithauli, Mau Nath Bhanjan-275101, U. P., India.
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Singh N, Kashyap S. In silico identification and characterization of 1-aminocyclopropane-1-carboxylate deaminase from Phytophthora sojae. J Mol Model 2012; 18:4101-11. [DOI: 10.1007/s00894-012-1389-0] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2011] [Accepted: 02/21/2012] [Indexed: 10/28/2022]
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Mehta M, Sethi S, Pushker N, Kashyap S, Sen S, Bajaj MS, Ghose S. Retinoblastoma. Singapore Med J 2012; 53:128-136. [PMID: 22337189] [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: 05/31/2023]
Abstract
Retinoblastoma is the most common intraocular malignancy in children and one of the very few life-threatening ophthalmic conditions. Genetically, the disease may be heritable or non-heritable. It can have unilateral or bilateral involvement and can present either sporadically or with a positive family history. Leukocoria and strabismus are the most common presentations. Diagnosis is made by indirect ophthalmoscopy aided by imaging techniques. Multidisciplinary management is aimed at saving lives, salvaging the globe and maintaining good vision. The use of neoadjuvant chemotherapy and focal treatments, such as cryotherapy, laser photocoagulation, transpupillary thermotherapy, brachytherapy and periocular chemotherapy, form the mainstay of globe preserving treatment in retinoblastoma. In developing countries, retinoblastoma is unfortunately accompanied by a high mortality rate due to delayed diagnosis made at advanced stages of the disease. Early diagnosis and timely management are vital for a good prognosis.
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Affiliation(s)
- M Mehta
- Paediatric Ophthalmology & Oncology Services, All India Institute of Medical Sciences, Dr Rajendra Prasad Centre for Ophthalmic Sciences, Ansari Nagar, New Delhi 110029, India
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Affiliation(s)
- N Pushker
- Oculoplastic and Tumor Services, All India Institute of Medical Sciences, New Delhi, India
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Yandigeri MS, Yadav AK, Srinivasan R, Kashyap S, Pabbi S. Studies on mineral phosphate solubilization by cyanobacteria Westiellopsis and Anabaena. Microbiology (Reading) 2011. [DOI: 10.1134/s0026261711040229] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
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Yandigeri MS, Kashyap S, Yadav AK, Srinavasan R, Pabbi S. Studies on mineral phosphate solubilization by cyanobacteria Westiellopsis and Anabaena. Mikrobiologiia 2011; 80:552-559. [PMID: 22073557] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Two diazotrophic cyanobacteria, Westiellopsis prolifica and Anabaena variabilis were evaluated for elucidating the possible mechanism of mineral phosphate solubilization. Phosphate starved cyanobacteria evaluated for the presence of organic acids, extracellular compounds or enzymes that might have been produced and promoted the mineral phosphate solubilization with Mussorie Rock Phosphate and Tricalcium Phosphate as substrates. Both the cultures did not reveal production of organic acids throughout the incubation period when checked for decrease in pH of the media and thin layer chromatography Thin layer chromatography of culture filtrates showed the presence of hydrocarbon like compound. Further analysis of the culture filtrates with gas liquid chromatography, a single peak near to the retention time of 7.6 was observed in all extracts of culture filtrates irrespective of phosphate source. UV-visible spectra of culture filtrates revealed the absorption maxima of 276 nm. Gas Chromatographic-Mass Spectrometric analysis of culture filtrates showed most intense peak in the electron impact (EI) ionization was at m/z 149 and molecular ion peaks at m/z 207 and 167, inferring the presence of phthalic acid. Among the mechanisms in mineral phosphate solubilization, it was evident that these cyanobacteria used phthalic acid as possible mode of P solubilization.
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Affiliation(s)
- Mahesh S Yandigeri
- National Bureau of Agriculturally Important Microorganisms (NBAIM), Kusmaur, Post Box No. 6, Mau Nath Bhanjan-275 101, Uttar Pradesh, India
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Glubb DM, Zhang W, Owzar K, Jiang C, Mirza O, Kashyap S, Rzyman W, Jassem J, Hirsch FR, Dziadziuszko R, Innocenti F. Molecular studies support the association between germ-line genetic variants in the vascular endothelial growth factor (VEGF) pathway and survival in non-small cell lung cancer (NSCLC) patients. J Clin Oncol 2011. [DOI: 10.1200/jco.2011.29.15_suppl.7059] [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: 11/20/2022] Open
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Kashyap S. Evaluating most probable number method to count and isolate viable methylotrophs. Braz J Microbiol 2011; 42:46-8. [PMID: 24031603 PMCID: PMC3768911 DOI: 10.1590/s1517-83822011000100006] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [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: 04/15/2010] [Revised: 04/21/2010] [Accepted: 08/28/2010] [Indexed: 11/22/2022] Open
Abstract
Nine different receptacles were tested with the MPN method to determine which receptacle was most reliable and economical for MPN counts. Results showed that 96 well PCR plate were the best vessels for this type of analysis and facilitated the isolation of viable Methylotrophs.
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Affiliation(s)
- S. Kashyap
- National Bureau of Agriculturally Important Microorganisms (ICAR), Kusmaur, Kaithauli, Mau Nath Bhanjan-275101, India
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Singh G, Gupta R, Kakkar A, Iyer VK, Kashyap S, Bakhshi S, Mathur SR. Fine needle aspiration cytology of metastatic ocular medulloepithelioma. Cytopathology 2010; 22:343-5. [DOI: 10.1111/j.1365-2303.2010.00821.x] [Citation(s) in RCA: 4] [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] [Indexed: 11/28/2022]
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Kashyap S, Shen S, Parker K, Jaffey J, O'Connor A, Wells G. Embryo prediction model decreases twin rates after art. Fertil Steril 2010. [DOI: 10.1016/j.fertnstert.2010.07.684] [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: 10/19/2022]
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Behl RK, Kashyap S, Sarkar M. Prevalence of bronchial asthma in school children of 6-13 years of age in Shimla city. Indian J Chest Dis Allied Sci 2010; 52:145-148. [PMID: 20949732] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
BACKGROUND Asthma is a major public health problem worldwide. However, there is limited data on asthma prevalence among school children in Shimla. The present study was undertaken to determine the prevalence of asthma in Shimla city and also to examine the different factors influencing its occurrence. METHODS This was a questionnaire-based study (International Study of Asthma and Allergies in Childhood [ISAAC] protocol) carried out in four randomly selected schools in the city of Shimla. The questionnaire was pre-tested in 50 school children. The age group included in the study was 6-13 years. The questionnaire was distributed to all the children (n = 1136). A response rate of 89.5% was achieved. The socio-economic status was determined on the basis of monthly income (cumulative square root value method). The ISAAC questionnaire was given standard scores. Various factors influencing the prevalence of asthma, such as socio-economic status, history of asthma and other allergic disorders in the family, type of cooking fuel used, history of active and passive smoking were elucidated from the history. RESULTS Overall prevalence of asthma in our study was found to be 2.3 percent. Boys had a higher prevalence (3.1%) than girls (1.4%). We found a significant association between asthma prevalence and family history of asthma and other atopic manifestations. There was no significant association of socio-economic factors and exposure to smoking with prevalence of asthma. CONCLUSION In the present study, the prevalence of bronchial asthma in school children in the age group of 6-13 years is 2.3 percent.
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Affiliation(s)
- R K Behl
- Department of Pulmonary Medicine, Indira Gandhi Medical College, Shimla (Himachal Pradesh), India
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Kashyap S. S-51 Traumatic Dislocation and Fracture Dislocation of Hip: A Retrospective Study of 209 Cases. J Biomech 2010. [DOI: 10.1016/s0021-9290(10)70104-4] [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: 10/19/2022]
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Kashyap S, Lal M. S-31 Alkaptonuric Ochronosis – A Review of 8 Cases. J Biomech 2010. [DOI: 10.1016/s0021-9290(10)70084-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Nayyar R, Singh P, Panda S, Kashyap S, Gupta NP. Proptosis due to "isolated" soft tissue orbital metastasis of prostate carcinoma. Indian J Cancer 2010; 47:74-6. [DOI: 10.4103/0019-509x.58867] [Citation(s) in RCA: 4] [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] [Indexed: 11/04/2022]
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Sahni R, Schulze KF, Ohira-Kist K, Kashyap S, Myers MM, Fifer WP. Interactions among peripheral perfusion, cardiac activity, oxygen saturation, thermal profile and body position in growing low birth weight infants. Acta Paediatr 2010; 99:135-9. [PMID: 19785632 DOI: 10.1111/j.1651-2227.2009.01514.x] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
AIMS To investigate the correlation between the 'perfusion index' (PI) and other commonly used estimates of cutaneous blood flow [heart rate (HR), surface temperatures (ST) and central-to-peripheral thermal gradients (C-P grad)] and to use this new non-invasive tool to compare differences between prone and supine sleep position in low birth weight (LBW) infants. METHODS Six-hour continuous recordings of pulse oximetry, cardiac activity and absolute ST from three sites (flank, forearm and leg), along with minute-to-minute assessment of behavioural states were performed in 31 LBW infants. Infants were randomly assigned to the prone or supine position for the first 3 h and then reversed for the second 3 h. PI data were correlated with HR and C-P grad, and compared across sleep positions during quiet sleep (QS) and active sleep (AS). RESULTS Perfusion index correlated significantly with HR (r(2) = 0.40) and flank-to-forearm thermal gradient (r(2) = 0.28). In the prone position during QS, infants exhibited higher PI (3.7 +/- 0.9 vs. 3.1 +/- 0.7), HR (158.4 +/- 8.9 vs. 154.1 +/- 8.8 bpm), SpO(2) (95.8 +/- 2.6 vs. 95.2 +/- 2.6%), flank (36.7 +/- 0.4 vs. 36.5 +/- 0.4 degrees C), forearm (36.1 +/- 0.6 vs. 35.5 +/- 0.4 degrees C) and leg (35.4 +/- 0.7 vs. 34.7 +/- 0.7 degrees C) temperatures and narrower flank-to-forearm (0.6 +/- 0.4 vs. 0.9 +/- 0.3 degrees C) and flank-to-leg (1.3 +/- 0.6 vs. 1.8 +/- 0.7 degrees C) gradients, compared to those of the supine position. Similar differences were observed during AS. CONCLUSION Perfusion index is a good non-invasive estimate of tissue perfusion. Prone sleeping position is associated with a higher PI, possibly reflecting thermoregulatory adjustments in cardiovascular control. The effects of these position-related changes may have important implications for the increased risk for sudden infant death syndrome in prone position.
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Affiliation(s)
- R Sahni
- Department of Pediatrics, College of Physicians and Surgeons, Columbia University, New York, NY, USA.
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