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Yadav R, Shaikh T, Tikole S, Herr AB, Fitzkee NC. 1H, 15N, and 13C chemical shift backbone resonance NMR assignment of the accumulation-associated protein (Aap) lectin domain from Staphylococcus epidermidis. Biomol NMR Assign 2023; 17:10.1007/s12104-023-10126-6. [PMID: 37022616 DOI: 10.1007/s12104-023-10126-6] [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] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/21/2023] [Accepted: 03/30/2023] [Indexed: 06/02/2023]
Abstract
Staphylococcus epidermidis is the leading causative agent for hospital-acquired infections, especially device-related infections, due to its ability to form biofilms. The accumulation-associated protein (Aap) of S. epidermidis is primarily responsible for biofilm formation and consists of two domains, A and B. It was found that the A domain is responsible for the attachment to the abiotic/biotic surface, whereas the B domain is responsible for the accumulation of bacteria during biofilm formation. One of the parts of the A domain is the Aap lectin, which is a carbohydrate-binding domain having 222 amino acids in its structure. Here we report the near complete backbone chemical shift assignments for the lectin domain, as well as its predicted secondary structure. This data will provide a platform for future NMR studies to explore the role of lectin in biofilm formation.
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Affiliation(s)
- Rahul Yadav
- Department of Chemistry, Mississippi State University, Starkville, MS, 39762, USA
- Physical Sciences Department, University of Arkansas, Ft. Smith, AR, 72913, USA
| | - Tanveer Shaikh
- Department of Chemistry, Mississippi State University, Starkville, MS, 39762, USA
| | - Suhas Tikole
- Department of Chemistry, Mississippi State University, Starkville, MS, 39762, USA
| | - Andrew B Herr
- Department of Pediatrics, Division of Immunobiology, Cincinnati Children's Hospital Medical Center, University of Cincinnati School of Medicine, Cincinnati, OH, 45229, USA
| | - Nicholas C Fitzkee
- Department of Chemistry, Mississippi State University, Starkville, MS, 39762, USA.
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Bhange SA, Bhansali M, Shaikh T, Ajgaonkar U. Rare case of peristomal pemphigus vulgaris in an operated case of carcinoma of the rectum. BMJ Case Rep 2019; 12:e230956. [PMID: 31712232 PMCID: PMC6855877 DOI: 10.1136/bcr-2019-230956] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [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] [Accepted: 10/03/2019] [Indexed: 11/04/2022] Open
Abstract
Pemphigus vulgaris (PV), in association with malignancy of the rectum, is a very rare presentation. We present here a case of a 58-year-old woman presenting with atypical skin eruptions in the peristomal area, which gradually progressed to her entire body. These lesions were later diagnosed to be PV. She developed these lesions in her postoperative period following an anterior resection with a covering ileostomy for her rectal malignancy. She had received neoadjuvant chemo+radiotherapy for her malignancy.
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Affiliation(s)
- Snehal A Bhange
- General Surgery, Jaslok Hospital and Research Centre, Mumbai, Maharashtra, India
| | - Mehul Bhansali
- Surgical Oncology, Jaslok Hospital and Research Centre, Mumbai, Maharashtra, India
| | - Tanveer Shaikh
- General Surgery, Jaslok Hospital and Research Centre, Mumbai, Maharashtra, India
| | - Utkarsh Ajgaonkar
- General Surgery, Jaslok Hospital and Research Centre, Mumbai, Maharashtra, India
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3
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Bhange SA, Bhansali M, Shaikh T, Ajgaonkar U. Colonic metastases 13 years after the primary ovarian cancer: a case study with a brief review of literature. BMJ Case Rep 2019; 12:12/7/e230127. [PMID: 31326907 DOI: 10.1136/bcr-2019-230127] [Citation(s) in RCA: 1] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Abstract
Metastatic ovarian malignancy is a known and dreaded complication of ovarian malignancy. Ovarian malignancies primarily disseminate through the peritoneal cavity and are only superficially invasive. They rarely metastasise through the haematogenous route, but that occurs in the presence of heavy peritoneal disease. The involvement of the colon in advanced ovarian malignancy is mostly through the peritoneal seedlings. It is very rare for an ovarian malignancy to invade through the serosa into the submucosa and mucosa of an adjacent colonic segment in the absence of active peritoneal disease. This occurring 13 years after the primary malignancy and after receiving a full course of chemotherapy is very interesting. There is always a possibility of a second primary cancer but in this case immunohistochemistry clearly clinched the diagnosis of an ovarian metastasis to the colon.
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Affiliation(s)
- Snehal A Bhange
- General Surgery, Jaslok Hospital and Research Centre, Mumbai, India
| | - Mehul Bhansali
- Surgical Oncology, Jaslok Hospital and Research Centre, Mumbai, India
| | - Tanveer Shaikh
- General Surgery, Jaslok Hospital and Research Centre, Mumbai, India
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Abstract
Sarcoidosis is a systemic granulomatous disease, with genitourinary tract involvement being very rare (0.2% of all sarcoidosis cases). Genitourinary sarcoidosis may present with a scrotal mass with or without testicular pain, often mimicking epididymo-orchitis or malignancy. Only 8 cases of genitourinary sarcoidosis have been reported in the literature in the last 14 years. We describe the case of a 25-year-old man who was referred with testicular pain. Scrotal ultrasonography demonstrated multiple bilateral hypoechoic testicular lesions that were of similar size and distributed unusually throughout the testicular parenchyma. Computed tomography detected a nodule in the middle lobe of the right lung, multiple small volume nodes in the retrocaval and left para-aortic regions, and enlarged bilateral external iliac and inguinal nodes, similar to those found in metastatic testicular cancer. Following ultrasound guided excision of one of the lesions, histopathological examination confirmed granulomatous inflammation consistent with sarcoidosis.
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Affiliation(s)
- F Chierigo
- University College London Hospitals NHS Foundation Trust , UK
| | - H M Alnajjar
- University College London Hospitals NHS Foundation Trust , UK
| | - A Haider
- University College London Hospitals NHS Foundation Trust , UK
| | - M Walkden
- University College London Hospitals NHS Foundation Trust , UK
| | - T Shaikh
- West Hertfordshire Hospitals NHS Trust , UK
| | - A Muneer
- University College London Hospitals NHS Foundation Trust , UK.,NIHR Biomedical Research Centre, University College London Hospital
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Wong J, Handorf E, Jain R, Zhang E, Shaikh T, Dotan E, Meyer J. An Analysis of Toxicity and Outcomes in Older Versus Younger Rectal Cancer Patients Treated with Trimodality Therapy. Int J Radiat Oncol Biol Phys 2018. [DOI: 10.1016/j.ijrobp.2018.07.501] [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: 10/28/2022]
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6
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Dong Y, Li T, Churilla T, Shaikh T, Sigurdson E, Bleicher R, Weiss S, Hayes S, Anderson P. Impact of Collagen Vascular Disease on Radiation-Related Toxicity in Breast Cancer Patients: A Matched Pair Analysis. Int J Radiat Oncol Biol Phys 2017. [DOI: 10.1016/j.ijrobp.2017.06.619] [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: 10/18/2022]
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7
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Kishan A, Ciezki J, Ross A, Cook R, Shaikh T, Stock R, Merrick G, Demanes D, Alam R, Spratt D, Abu-Isa E, Wedde T, Lilleby W, Sandler K, Song D, Reddy C, Nickols N, Steinberg M, Horwitz E, King C. Extremely Dose Escalated Radiation Therapy Improves Cancer-Specific Survival Compared With Radical Prostatectomy or Conventionally Dose-Escalated Radiation Therapy in Gleason Score 9-10 Prostate Adenocarcinoma: A Multi-institutional Analysis of 1403 Patie. Int J Radiat Oncol Biol Phys 2017. [DOI: 10.1016/j.ijrobp.2017.06.306] [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: 11/29/2022]
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Wong J, DeMora L, Shaikh T, Borghaei H, Meyer J, Hallman M. Identifying Predictors of Distant Relapse Following SBRT for Stage I NSCLC: Is There a Role for Systemic Therapy? Int J Radiat Oncol Biol Phys 2017. [DOI: 10.1016/j.ijrobp.2017.06.1803] [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: 10/18/2022]
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Shaikh T, Ruth K, Devarajan K, Zaorsky N, Hallman M, Sobczak M, Chen D, Uzzo R, Smaldone M, Kutikov A, Greenberg R, Viterbo R, Pollack A, Horwitz E. Dosimetric and Clinical Predictors of Long-Term Toxicity in Patients Undergoing Hypofractionated Prostate Radiation Therapy: Results From a Randomized Phase 3 Trial. Int J Radiat Oncol Biol Phys 2016. [DOI: 10.1016/j.ijrobp.2016.06.300] [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: 11/25/2022]
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Leachman B, Shaikh T, Li T, Anderson P. Association Between Body Mass Index and Treatment Outcomes in Women Undergoing Breast Conservation: An Analysis of 3850 Women. Int J Radiat Oncol Biol Phys 2016. [DOI: 10.1016/j.ijrobp.2016.06.740] [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: 10/20/2022]
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Paly J, Shaikh T, Scott W, Flieder D, Borghaei H, Hallman M, Meyer J. Comparative Effectiveness of Standard Versus High-Dose Neoadjuvant Chemoradiation Followed by Surgery for Locally Advanced Non-Small Cell Lung Cancer. Int J Radiat Oncol Biol Phys 2016. [DOI: 10.1016/j.ijrobp.2016.06.499] [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: 10/20/2022]
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Shaikh T, Churilla T, Murphy C, Hallman M, Scott W, Meyer J. Comparative Effectiveness of Lobectomy, Sublobar Resection, and Stereotactic Body Radiation Therapy for Clinical Stage I Non-Small Cell Lung Cancer: A Propensity-Matched Analysis. Int J Radiat Oncol Biol Phys 2016. [DOI: 10.1016/j.ijrobp.2016.06.1765] [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: 11/29/2022]
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13
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Yoon S, Shaikh T, Ross E, Bauman J, Borghaei H, Mehra R, Meyer J, Hallman M. Patterns and Predictors of Failure Following Definitive Chemoradiation for Locally Advanced Non-Small Cell Lung Cancer (NSCLC). Int J Radiat Oncol Biol Phys 2016. [DOI: 10.1016/j.ijrobp.2016.06.1829] [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: 10/20/2022]
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14
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Shaikh T, Churilla T, Zaorsky N, Murphy C, Carlson R, Weiss S, Anderson P, Hayes S. Postmastectomy Radiation Therapy in Women With ypN0-N3 Breast Cancer. Int J Radiat Oncol Biol Phys 2016. [DOI: 10.1016/j.ijrobp.2016.06.661] [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]
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15
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Kishan A, Shaikh T, Wang J, Reiter R, Said J, Raghavan G, Nickols N, Aronson W, Sadeghi A, Kamrava M, Demanes D, Steinberg M, Horwitz E, Kupelian P, King C. Clinical Outcomes for Patients With Gleason Score 9-10 Prostate Adenocarcinoma Treated With Radiation Therapy or Radical Prostatectomy: A Comparative Analysis. Int J Radiat Oncol Biol Phys 2016. [DOI: 10.1016/j.ijrobp.2016.06.1201] [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: 10/20/2022]
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16
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Shaikh T, Churilla T, Mantia-Smaldone G, Chu C, Rubin S, Anderson P. The role of adjuvant radiation in lymph node-positive endometrial adenocarcinoma. Gynecol Oncol 2016. [DOI: 10.1016/j.ygyno.2016.04.132] [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: 10/21/2022]
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17
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Shaikh T, Handorf E, Murphy C, Mehra R, Ridge J, Galloway T. The Impact of Chemoradiation Treatment Time on Survival in Patients With Head and Neck Cancer. Int J Radiat Oncol Biol Phys 2016. [DOI: 10.1016/j.ijrobp.2015.12.061] [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: 11/25/2022]
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18
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Shaikh T, Li T, Johnson M, Wang L, Hallman M, Greenberg R, Price R, Uzzo R, Ma C, Chen D, Pollack A, Horwitz E. Long-term Patient Reported Outcomes From a Phase 3 Randomized Prospective Trial of Conventional Versus Hypofractionated IMRT Radiation Therapy for Localized Prostate Cancer. Int J Radiat Oncol Biol Phys 2015. [DOI: 10.1016/j.ijrobp.2015.07.086] [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: 10/22/2022]
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19
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Zaorsky N, Ruth K, Shaikh T, Smaldone M, Hallman M, Slifker M, Hayes S, Sobczak M, Horwitz E. Type 2 Diabetes Mellitus, Oral Antihyperglycemics, Insulin Use, and Outcomes Among Men Receiving Radiation Therapy for Prostate Cancer. Int J Radiat Oncol Biol Phys 2015. [DOI: 10.1016/j.ijrobp.2015.07.1059] [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]
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20
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Shaikh T, Wang L, Egleston B, Burki M, Hoffman J, Cohen S, Meyer J. Bone Marrow Irradiation Predicts for Hematologic Toxicity in Patients Undergoing Chemoradiation for Pancreatic Cancer. Int J Radiat Oncol Biol Phys 2015. [DOI: 10.1016/j.ijrobp.2015.07.971] [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: 10/22/2022]
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21
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Shaikh T, Zaorsky NG, Ruth K, Chen DY, Greenberg RE, Li J, Crawford K, Horwitz EM. Is it necessary to perform week three dosimetric analysis in low-dose-rate brachytherapy for prostate cancer when day 0 dosimetry is done? A quality assurance assessment. Brachytherapy 2015; 14:316-21. [PMID: 25454576 PMCID: PMC4424094 DOI: 10.1016/j.brachy.2014.09.012] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2014] [Revised: 09/29/2014] [Accepted: 09/30/2014] [Indexed: 10/24/2022]
Abstract
PURPOSE To determine whether computed tomography/magnetic resonance imaging-based day 0 (d0) dosimetry is a meaningful predictor of day 21 (d21) dosimetry in low-dose-rate brachytherapy for localized prostate cancer. METHODS AND MATERIALS The study population consisted of 277 men with localized (T1-2 N0 M0), low-/intermediate-risk prostate cancer treated with low-dose-rate brachytherapy. Computed tomography/magnetic resonance imaging fusion was used for postimplant dosimetry at d0 and d21. Logistic regression was used to construct receiver operating characteristic curves for achieving each constraint at d21, based on d0 D90 and V100, and Youden's index was used to evaluate cutpoints. Freedom from biochemical failure (FBCF) was estimated with the Kaplan-Meier method. RESULTS The median d0 D90 increased from 133 to 150 Gy at d21, and median d0 V100 increased from 87% to 91%. For achieving the D90 constraint at d21, the optimal cut-point for d0 D90 was 135 Gy, with 84% of these patients maintaining a d21 D90 > 145 Gy. For achieving the D90 constraint at d21, the optimal cut-point for d0 V100 was 87%, with 83% of these patients maintained a d21 V100 > 90%. There was no improvement in FBCF in patients with a d0 D90 > 135 Gy or D90 > 145 Gy. Similarly, there was no improvement in FBCF in patients with a d0 V100 > 87% or V100 > 90%. CONCLUSIONS Meeting dosimetric constraints on d0 does not obviate d21 dosimetric analysis. Constraints used for dose prescriptions on d0 are not the ideal predictors of d21 dosimetry.
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Affiliation(s)
- T Shaikh
- Department of Radiation Oncology, Fox Chase Cancer Center, Philadelphia, PA
| | - N G Zaorsky
- Department of Radiation Oncology, Fox Chase Cancer Center, Philadelphia, PA
| | - K Ruth
- Department of Biostatistics, Fox Chase Cancer Center, Philadelphia, PA
| | - D Y Chen
- Department of Surgical Oncology, Fox Chase Cancer Center, Philadelphia, PA
| | - R E Greenberg
- Department of Surgical Oncology, Fox Chase Cancer Center, Philadelphia, PA
| | - J Li
- Department of Radiation Oncology, Fox Chase Cancer Center, Philadelphia, PA
| | - K Crawford
- Department of Radiation Oncology, Fox Chase Cancer Center, Philadelphia, PA
| | - E M Horwitz
- Department of Radiation Oncology, Fox Chase Cancer Center, Philadelphia, PA.
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Shaikh T, Ansari S, Mandhane N, U. T, Karandikar S, Khan N, Deolekar S. Bilateral total duplication of clavicle: First reported case. ACTA ACUST UNITED AC 2015. [DOI: 10.18203/2320-6012.ijrms20150269] [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: 11/19/2022]
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Wang L, Handorf E, Shaikh T, Hoffman J, Cohen S, Meyer J. Dose Escalation With a Vessel Boost in Borderline Resectable Pancreatic Adenocarcinoma Treated With Neoadjuvant Chemoradiation. Int J Radiat Oncol Biol Phys 2014. [DOI: 10.1016/j.ijrobp.2014.05.1166] [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: 10/24/2022]
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Zaki M, Shaikh T, Dominello M, McSpadden E, Yu M, Cohen S, Scott W, Shields A, Philip P, Choi M, Meyer J, Konski A. PET SUVmax as a Predictor of Pathologic Complete Response to Neoadjuvant Chemoradiation Therapy in Patients With Carcinoma of the Esophagus. Int J Radiat Oncol Biol Phys 2014. [DOI: 10.1016/j.ijrobp.2014.05.1143] [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]
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Shaikh T, Burki M, Egleston B, Wang L, Cohen S, Meyer J. Defining the Optimal Sequencing of Chemotherapy (Cx) and Radiation (RT) in Patients With Locally Advanced Pancreatic Cancer. Int J Radiat Oncol Biol Phys 2014. [DOI: 10.1016/j.ijrobp.2014.05.1164] [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: 10/24/2022]
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Dominello M, Shaikh T, Zaki M, Zamen O, Hurst N, Martin J, McSpadden E, Shields A, Phillip P, Meyer J, Konski A. Does Taxane-based Chemoradiation therapy Increase the Risk of Pneumonitis in the Treatment of Locally Advanced Esophageal Cancer? Int J Radiat Oncol Biol Phys 2014. [DOI: 10.1016/j.ijrobp.2014.05.094] [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: 11/30/2022]
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Shaikh T, Dominello M, Zaki M, Handorf E, Martin J, Denlinger C, Cohen S, Scott W, Konski A, Meyer J. Histology Predicts Response to Chemoradiation (cRT) Regimen in Patients Undergoing Esophagectomy for Locally Advanced Esophageal Cancer. Int J Radiat Oncol Biol Phys 2014. [DOI: 10.1016/j.ijrobp.2014.05.1137] [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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Papatsoris AG, Shaikh T, Patel D, Bourdoumis A, Bach C, Buchholz N, Masood J, Junaid I. Use of a virtual reality simulator to improve percutaneous renal access skills: a prospective study in urology trainees. Urol Int 2012; 89:185-90. [PMID: 22777170 DOI: 10.1159/000337530] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2011] [Accepted: 01/27/2012] [Indexed: 11/19/2022]
Abstract
OBJECTIVES This study aims to assess the impact of a virtual reality trainer in improving percutaneous renal access skills of urological trainees. METHODS A total of 36 urology trainees participated in this prospective study. Initially, they were taken through the exercise of gaining access to the lower pole calyceal system and introducing a guidewire down the ureter. Trainees' performance was then assessed by virtual reality-derived parameters of the simulator at baseline and after 2 h of training. RESULTS Participants who underwent training with the simulator demonstrated significant improvement in several parameters compared to their baseline performance. There was a statistically significant correlation between total time to perform the procedure and time of radiation exposure, radiation dose and correct calyx puncture (p < 0.01). Trainees needed a mean of 15.8 min from skin puncture to correct guidewire placement into the pelvicalyceal system before and 6.49 min following training. CONCLUSIONS We found percutaneous renal access skills of trainees improve significantly on a number of parameters as a result of training on the PERC Mentor TM VR simulator. Such simulated training has the potential to decrease the risks and complications associated with the early stages of the learning curve when training for percutaneous renal access in patients.
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Affiliation(s)
- A G Papatsoris
- Endourology and Stone Services and The Urology Simulation Centre, Department of Urology, Bart's and The London NHS Trust, London, UK
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Abstract
Laparoscopic surgery in a patient with Partial Situs Inversus may pose interesting challenges to the surgeon. Here we report a case of a morbidly obese young female with partial situs inversus who underwent Laparoscopic Vertical Sleeve Gastrectomy (LSG). The peri-operative challenges very many and these have been enumerated. The mirror image approach is recommended in such cases for a successful surgery which was not employed in this case. Postoperative barium swallow was normal and the patient has been on regular follow up.
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Affiliation(s)
- S Borude
- BSES Hospital, Andheri, Mumbai, India
| | - S Jadhav
- BSES Hospital, Andheri, Mumbai, India
| | - T Shaikh
- BSES Hospital, Andheri, Mumbai, India
| | - Sr Nath
- BSES Hospital, Andheri, Mumbai, India
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Foley A, Hu Y, Zou Y, Yang M, Medne L, Leach M, Conlin L, Spinner N, Shaikh T, Neumeyer A, Bliss L, Winder T, Bönnemann C. P1.11 Large genomic deletions as a novel type of mutation in Ullrich CMD. Neuromuscul Disord 2010. [DOI: 10.1016/j.nmd.2010.07.026] [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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Jalali GR, Vorstman JAS, Errami A, Vijzelaar R, Biegel J, Shaikh T, Emanuel BS. Detailed analysis of 22q11.2 with a high density MLPA probe set. Hum Mutat 2008; 29:433-40. [PMID: 18033723 DOI: 10.1002/humu.20640] [Citation(s) in RCA: 80] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
The presence of chromosome-specific low-copy repeats (LCRs) predisposes chromosome 22 to deletions and duplications. The current diagnostic procedure for detecting aberrations at 22q11.2 is chromosomal analysis coupled with fluorescence in situ hybridization (FISH) or PCR-based multiplex ligation dependent probe amplification (MLPA). However, there are copy number variations (CNVs) in 22q11.2 that are only detected by high-resolution platforms such as array comparative genomic hybridization (aCGH). We report on development of a high-definition MLPA (MLPA-HD) 22q11 kit that detects copy number changes at 37 loci on the long arm of chromosome 22. These include the 3-Mb region commonly deleted in DiGeorge/velocardiofacial syndrome (DGS/VCFS), the cat eye syndrome (CES) region, and more distal regions in 22q11 that have recently been shown to be deleted. We have used this MLPA-HD probe set to analyze 363 previously well-characterized samples with a variety of different rearrangements at 22q11 and demonstrate that it can detect copy number alterations with high sensitivity and specificity. In addition to detection of the common recurrent deletions associated with DGS/VCFS, variant and novel chromosome 22 aberrations have been detected. These include duplications within as well as deletions distal to this region. Further, the MLPA-HD detects deletion endpoint differences between patients with the common 3-Mb deletion. The MLPA-HD kit is proposed as a cost effective alternative to the currently available detection methods for individuals with features of the 22q11 aberrations. In patients with the relevant phenotypic characteristics, this MLPA-HD probe set could replace FISH for the clinical diagnosis of 22q11.2 deletions and duplications.
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Affiliation(s)
- G R Jalali
- Division of Human Genetics, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania 19104-4318, USA
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Jackson M, Shaikh T. Mouthwash for anaphylaxis. Arch Emerg Med 2007; 24:865. [DOI: 10.1136/emj.2007.049080] [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: 11/04/2022]
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Fareed J, Shaikh T, Hoppensteadt DA. Antithrombin and anti-Xa agents in the control of thrombogenesis. Pharmazie 2001; 56 Suppl 1:S12-21. [PMID: 11686086] [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: 02/22/2023]
Abstract
Recent developments as well as future trends in the area of thrombin inhibitors and anti-Xa agents are reviewed.
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Affiliation(s)
- J Fareed
- Departments of Pathology and Pharmacology, Loyola University Chicago, Maywood, IL, USA.
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Shindler D, Shaikh T, Yi C, Wilson A, Micheli-Tzanakou E, Kostis J. Echocardiographic machine learning databases on the internet. J Am Coll Cardiol 1998. [DOI: 10.1016/s0735-1097(98)80696-7] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Bouyge-Moreau I, Rondeau G, Avet-Loiseau H, André MT, Bézieau S, Chérel M, Saleün S, Cadoret E, Shaikh T, De Angelis MM, Arcot S, Batzer M, Moisan JP, Devilder MC. Construction of a 780-kb PAC, BAC, and cosmid contig encompassing the minimal critical deletion involved in B cell chronic lymphocytic leukemia at 13q14.3. Genomics 1997; 46:183-90. [PMID: 9417905 DOI: 10.1006/geno.1997.5008] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.2] [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: 02/05/2023]
Abstract
A putative tumor suppressor gene involved in B cell chronic lymphocytic leukemia (B-CLL) was mapped to human chromosome 13q14.3 close to the genetic markers D13S25 and D13S319. We constructed a 780-kb-long contig composed of cosmids, bacterial artificial chromosomes, and bacteriophage P1-derived artificial chromosomes that provides essential information and tools for the positional cloning of this gene. The conting contains both flanking markers as well as several additional genetic markers, three ESTs, and one potential CpG island. In addition, using one B-CLL patient, we characterized a small internal deleted region of 550 kb. Comparing this deletion with other recently published deletions narrows the minimally deleted area to less than 100 kb in our physical map. This deletion core region should contain all or part of the disrupted in B cell malignancies tumor suppressor gene.
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Affiliation(s)
- I Bouyge-Moreau
- Institut de Biologie de l'Hôtel-Dieu, INSERM U 463, Centre Hospitalier Universitaire, Nantes, France
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Naini AA, Shimony E, Kozlowski E, Shaikh T, Dang W, Miller C. Interaction of Ca2(+)-activated K+ channels with refolded charybdotoxins mutated at a central interaction residue. Neuropharmacology 1996; 35:915-21. [PMID: 8938722 DOI: 10.1016/0028-3908(96)00112-8] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
Charybdotoxin is a small peptide blocker of K+ channels, rigidly held in active conformation by three disulfide bonds. The toxin blocks K+ channels by binding to a receptor site located at the external "vestibule", and thus physically occluding the outer opening of the K+ conduction pore. In the blocked complex, K27, a residue on the toxin's molecular surface, projects its epsilon-amino group into the K(+)-selective pore. The results here show that CTX, produced by heterologous expression in E. coli, may be manipulated to place unnatural positively charged residues at position 27. The toxin folds faithfully to its native conformation when the crucial lysine at position 27 is replaced by a cysteine residue, a maneuver that allows specific chemical modification of this side-chain. Replacements of K27 by side-chains slightly shorter or slightly longer than lysine yield active toxins. The toxin variant with ornithine at this position interacts much less strongly with K+ ions in the pore of slowpoke-type Ca2(+)-activated K+ channels than does wild-type toxin. This result argues that the epsilon-amino group of K27 in bound toxin lies only a few ångstroms away from a K+ ion occupying the blocked pore. The peptide folds with high efficiency to form the correct disulfides even in the presence of strong denaturants.
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Affiliation(s)
- A A Naini
- Howard Hughes Medical Institute, Graduate Department of Biochemistry, Brandeis University, Waltham, Massachusetts, USA
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Miller LA, Shaikh T, Stanton C, Montgomery A, Rickard R, Keefer S, Hoffman R. Surveillance for fetal alcohol syndrome in Colorado. Public Health Rep 1995; 110:690-7. [PMID: 8570819 PMCID: PMC1381808] [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] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023] Open
Abstract
The authors performed surveillance for fetal alcohol syndrome with an existing birth defects registry. Fetal alcohol syndrome cases were identified from multiple sources using passive surveillance and from two selected medical sites using enhanced surveillance. Between May 1992 and March 1994, a total of 173 cases were identified, and the medical records of the cases were reviewed to determine whether the cases met a surveillance case definition for fetal alcohol syndrome. Of these cases, 37 (21 percent) met either definite (28) or probable (9) criteria for fetal alcohol syndrome, 76 met possible criteria (44 percent), and 60 (35 percent) were defined as not fetal alcohol syndrome. Enhanced surveillance had the highest sensitivity for definite or probable cases, 31 of 37 (84 percent), followed by hospital discharge data, 14 of 37 (38 percent). The authors also compared birth certificate information for 22 definite or probable cases in children born between 1989 and 1992 to birth certificate information for all Colorado births for that period. The proportion of mothers of children with fetal alcohol syndrome was statistically significantly greater (as determined by exact binomial 95 percent confidence limits) than the proportion of all mothers for the following characteristics: black race (0.23 versus 0.05), unmarried (0.55 versus 0.22), not employed during pregnancy (0.86 versus 0.43), and started prenatal care in the third trimester (0.18 versus 0.04). Surveillance for fetal alcohol syndrome can be accomplished with an existing registry system in combination with additional case finding and verification activities. Through followup investigation of reported cases, data can be gathered on the mothers of children with fetal alcohol syndrome. These data could be used to target fetal alcohol syndrome prevention programs.
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Affiliation(s)
- L A Miller
- Colorado Department of Public Health and Environment, DCEED-EE-A3, Denver 80222-1530, USA
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