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Beemrote DS, Aseri Y, Rawat DS, Mahich S, Verma PC. A Comparative Study of Endoscopic Assisted Powered Adenoidectomy Versus Conventional Adenoidectomy. Indian J Otolaryngol Head Neck Surg 2023; 75:1598-1603. [PMID: 37636813 PMCID: PMC10447357 DOI: 10.1007/s12070-023-03633-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2023] [Accepted: 02/23/2023] [Indexed: 03/29/2023] Open
Abstract
Adenoidectomy is one of the most common procedures performed in children today, either alone or in conjunction with tonsillectomy or insertion of ventilating tubes. The present study was planned to compare the endoscopic powered adenoidectomy versus conventional adenoidectomy. The present prospective observational randomized study was carried out in the Department of Otorhinolaryngology of a tertiary care teaching hospital of Rajasthan. Fifty patients with adenoid hypertrophy in the age group between 5-13 years were enrolled in the study and divided in to two groups viz. cases undergoing conventional adenoidectomy using curettage method (group A = 25) and cases undergoing endoscopic powered adenoidectomy (group B = 25). Intra operative time, primary bleeding, completeness of adenoid removal, depth of resection, and collateral damage were noted intra operatively in both the groups. Postoperative pain, recovery time, postoperative complications were also compared. Intra operative time taken in Group A was 25.6 ± 2.90 min while it was 35.04 ± 5.24 min in Group B. (p < 0.0001) Average blood loss in Group A was 18.4 ± 4.72 ml compared to an average blood loss of 29.32 ± 2.59 ml in Group B. (p < 0.0001) The postoperative recovery time in Group A was 4.93 days and it was 3.06 days in group B. (p = 0.00). The present study concluded that newer method of endoscopic powered adenoidectomy was found to be a safe and useful tool for adenoidectomy in terms of completeness of resection, better control of depth of resection and minimal collateral damage intra-operatively and less postoperative pain, complications and fast recovery period. Supplementary Information The online version contains supplementary material available at 10.1007/s12070-023-03633-4.
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Affiliation(s)
| | - Yogesh Aseri
- Department Of ENT, JLN Medical College and Hospital, Ajmer, Rajasthan India
| | | | - Sushma Mahich
- Department Of ENT, JLN Medical College and Hospital, Ajmer, Rajasthan India
| | - P C Verma
- Department Of ENT, JLN Medical College and Hospital, Ajmer, Rajasthan India
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Sharma AK, Jain K, Singhal P, Rawat DS, Jain SK, Sharma S. Encapsulated Follicular Variant of Papillary Thyroid Carcinoma: A review on Surgical Treatment. Indian J Otolaryngol Head Neck Surg 2022; 74:6384-6390. [PMID: 36742493 PMCID: PMC9895742 DOI: 10.1007/s12070-022-03107-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2021] [Accepted: 11/18/2021] [Indexed: 02/07/2023] Open
Abstract
Differentiated thyroid carcinoma is one of the commonest malignancies in head and neck region. Among differentiated thyroid carcinoma, papillary carcinoma is the commonest. Encapsulated follicular variant of papillary thyroid carcinoma tumors are very indolent tumors which behave like benign tumors. Many tumors have been over diagnosed and over treated in spite of their indolent nature. We aimed to find out if total thyroidectomy is really required for very low grade tumors like encapsulated FVPTC. We operated 672 patients of thyroid disease during 2012 to 2020 in SMS Medical College, Jaipur. Out of 256 patients, 199 patients (78%) had papillary carcinoma of thyroid. Classical variant was present in 40% and follicular variant was present in 35% (N-69). Out of 69 patients with follicular variant of PTC, 59 patients had well encapsulated type of follicular variant of PTC while 10 patients had invasive type of follicular variant of PTC. Encapsulated FVPTC are less aggressive and indolent tumors. They should be treated more conservatively. Hemithyroidectomy is sufficient treatment for its complete cure. Out of 69 patients with Follicular variant of PTC, 59 patients had encapsulated disease. Out of 59 patients, 14 (24%) had bilateral nodular disease. 45 (77%) patients had unilateral disease; multicentric in one lobe in 9 (15%) patients and unicentric in 36 (61%) patients. However, encapsulated FVPTC was only found in predominant lobe and the non dominant lobe had benign disease.
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Affiliation(s)
- Anjani Kumar Sharma
- Department of Otorhinolaryngology, SMS Medical College, B-43, Krishnapuri, Old Ramgarh Mod, Jaipur, 302002 India
| | - Khushboo Jain
- Department of Otorhinolaryngology, SMS Medical College, B-43, Krishnapuri, Old Ramgarh Mod, Jaipur, 302002 India
| | - Pawan Singhal
- Department of Otorhinolaryngology, SMS Medical College, B-43, Krishnapuri, Old Ramgarh Mod, Jaipur, 302002 India
| | | | - Shailesh Kumar Jain
- Department of Otorhinolaryngology, SMS Medical College, B-43, Krishnapuri, Old Ramgarh Mod, Jaipur, 302002 India
| | - Shivam Sharma
- Department of Otorhinolaryngology, SMS Medical College, B-43, Krishnapuri, Old Ramgarh Mod, Jaipur, 302002 India
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Pareek YK, Gupta D, Aseri Y, Rawat DS, Singh BK, Verma PC. Giant Pleomorphic Adenomas of Parotid Gland: a Case Series. Indian J Otolaryngol Head Neck Surg 2022; 74:2008-2013. [PMID: 36452755 PMCID: PMC9702418 DOI: 10.1007/s12070-020-01968-w] [Citation(s) in RCA: 1] [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: 05/06/2020] [Accepted: 07/11/2020] [Indexed: 11/28/2022] Open
Abstract
The parotid gland is the largest salivary gland in the body. Pleomorphic adenomas (PA) are most common benign tumors of parotid gland. If left untreated, they can gradually attain the size which can weigh several kilograms. This paper highlights a case series of 15 cases diagnosed as giant pleomorphic adenoma arising in the parotid gland along with their management. A hospital based, observational study of 15 patients of PA of the parotid gland, > 10 cm in its widest dimension considered as giant, done at tertiary care ENT hospital over period of 9 years. The age of the patients ranged from 30 to 81 years with mean age 50.33 ± 15.30 years. There were 5(33.33%) males and 10(66.67%) females. The time duration of having tumor ranged from 5 to 20 years with mean duration of 10.4 ± 4.17 years and the largest tumor was 25 cm in its largest diameter. Mean weight of tumors was 2.72 ± 0.52 kg. One out of fifteen cases was detected as malignant in nature. All cases were treated by surgical excision without any complications. Pleomorphic adenoma of parotid gland can assume a giant proportion when timely surgical intervention is not done. We can build up confidence and hope for life in patients after complete surgical excision of giant PA.
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Affiliation(s)
- Yogendra Kumar Pareek
- Department of ENT and Head-Neck Surgery, SMS Medical College and Hospital, Jaipur, Rajasthan India
| | | | - Yogesh Aseri
- Department of ENT and Head-Neck Surgery, JLN Medical College and Hospital, Ajmer, Rajasthan India
| | - Digvijay Singh Rawat
- Department of ENT and Head-Neck Surgery, JLN Medical College and Hospital, Ajmer, Rajasthan India
| | - Bhuvenesh K. Singh
- Department of ENT and Head-Neck Surgery, JLN Medical College and Hospital, Ajmer, Rajasthan India
| | - Praveen Chandra Verma
- Department of ENT and Head-Neck Surgery, JLN Medical College and Hospital, Ajmer, Rajasthan India
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Verma P, Rawat DS, Aseri Y, Verma PC, Singh BK. A prospective longitudinal study of clinical outcome and quality of life assessment in patients with chronic rhinosinusitis after functional endoscopic sinus surgery using sino nasal outcome test-22. Indian J Otolaryngol Head Neck Surg 2022; 74:792-799. [PMID: 36452849 PMCID: PMC9702441 DOI: 10.1007/s12070-020-01847-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2019] [Accepted: 03/30/2020] [Indexed: 11/28/2022] Open
Abstract
Chronic rhinosinusitis (CRS) significantly affect the quality of life (QoL) of patients. The study was conducted in CRS patients who were treated with functional endoscopic sinus surgery (FESS) after failure of medical treatment to analyze clinical outcome using prospectively collected data through a symptom-based rhinosinusitis outcome measure, the Sino-nasal Outcome Test-22 (SNOT-22). The aim of the study was to evaluate and compare the QoL in patients of chronic rhinosinusitis pre-operative and after FESS by SNOT-22. The prospective study was conducted on 40 patients of chronic rhinosinusitis with or without nasal polyposis. Demographic, clinical, diagnostic nasal endoscopy and radiological findings were recorded. Visual analogue scoring and SNOT-22 questionnaire scoring were done preoperatively and at 3rd and 6th months post-operatively. These scores were compared and a value of p < 0.01 was considered statistical significant. Nasal obstruction (80%) was the most commonly reported disabling condition followed by rhinorrhea (75%), facial pain-pressure (72.5%), headache and sneezing. The mean preoperative nasal endoscopy score was 8.08 ± 3.65. The mean preoperative Lund Mackay CT scan score was 11.725 ± 3.64. The mean preoperative SNOT-22 score was 46.25 ± 20.44. After FESS, nasal discharge was improved in 86% patients. Average VAS scores showed significant postoperative improvement at 6 months (p < 0.01). The mean postoperative diagnostic nasal endoscopy score improved to 2.80 ± 1.64 at 6 months (p < 0.01). The mean postoperative SNOT-22 scores decreased at postoperative follow up visits at 3 and 6 months to 14.58 ± 4.90 at 3 months and 22.38 ±7.93 at 6 months (p < 0.01). CRS patient refractory to medical treatment showed statistical significant improvement after FESS. The SNOT-22 scoring was easy to use scoring used for QoL assessment showed significant improvement after FESS.
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Affiliation(s)
- Payal Verma
- Department of ENT, JLN Medical College and Hospitals, Ajmer, Rajasthan 305001 India
| | - Digvijay Singh Rawat
- Department of ENT, JLN Medical College and Hospitals, Ajmer, Rajasthan 305001 India
| | - Yogesh Aseri
- Department of ENT, JLN Medical College and Hospitals, Ajmer, Rajasthan 305001 India
| | | | - B. K. Singh
- Department of ENT, JLN Medical College and Hospitals, Ajmer, Rajasthan 305001 India
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Sharma S, Rawat DS, Aseri Y, Trivedi GP, Verma PC, Singh BK. A Prospective Randomized Study to Compare Surgical Outcome Using Wet and Dry Temporalis Fascia Graft in Type I Tympanoplasty. Indian J Otolaryngol Head Neck Surg 2022; 74:229-233. [PMID: 36032894 PMCID: PMC9411447 DOI: 10.1007/s12070-020-02027-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2020] [Accepted: 07/29/2020] [Indexed: 11/24/2022] Open
Abstract
Temporalis fascia is being used as graft material for tympanic membrane repair for over six decades. Though cartilage with or without perichondrium is also being used for different situations, still temporalis fascia graft is being considered as an ideal graft for tympanoplasty. Earlier the dried temporalis fascia was used as a graft but now freshly taken wet temporalis fascia is increasingly being used as a more 'physiological/ live' graft. The present study was planned to compare the results of use of wet and dry temporalis fascia in chronic otitis media mucosal disease. The prospective study was conducted on 100 patients of chronic suppurative otitis media mucosal disease. Chronic ear survey questionnaire were filled to note the impact on quality of life. Otoscopic, oto-endoscopic and examination under microscope performed. Patients were allocated into two groups alternately. Freshly taken wet temporalis graft was used in group I whereas dry temporalis fascia was used in group II. Hearing evaluation by pure tone audiogram was done preoperatively and at 6th months post-operatively. Pre-operative and post-operative hearings in both the groups were compared. Air bone gap closures after surgery in between both the groups were compared to see for any statistical difference. We found similar graft uptake in both the groups after 6 months of surgery. The air bone gap closure in group I was 10.80 ± 5.74 and group II was 9.28 ± 4.81, there was no significant difference. However senior authors noted that in some of the cases in group I with fresh wet graft placement neo-tympanum formation was noticed early showing good circumferential leash of blood vessels all around signifying early vascularisation.
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Gupta P, Singh Rawat D, Aseri Y, Verma PC, Singh BK. Allergic Fungal Sinusitis with Bilateral Optic Neuropathy. BJOHNS 2022. [DOI: 10.47210/bjohns.2021.v29i3.537] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022] Open
Abstract
Introduction
Allergic Fungal Rhinosinusitis (AFRS) is characterized by an inflammatory response to a non-invasive fungus which leads to sinus obstruction. Ophthalmic manifestations of AFRS are rare but can be of grave consequence.
Case Report
A 22-year-old female patient presented with a 5-day history of headache and decreased vision in both eyes (right- perception of light; left-6/18), along with a past history of nasal blockage and recurrent rhinorrhoea. She had thick viscid mucous secretion with polyposis in bilateral nasal cavities. Computed tomography showed pansinusitis with heterogenous opacification and polypoidal mucosal hypertrophy. Bony erosion was seen in bilateral orbital apices with oedematous optic nerves. MRI was suggestive of bilateral optic neuritis. Patient underwent emergency surgical debridement via endoscopic sinus surgery. Histopathological examination of the specimen showed cellular debris, eosinophilic prominence and numerous Charcot-Leyden crystals, with presence of branched septate fungal hyphae. Fungal culture grew Aspergillus flavus. Patient was treated with steroids (injectable followed by oral in gradually tapering doses). Over a period of 3 months vision returned to normal.
Conclusion
Vision loss is a rare complication of AFRS and constitutes an emergency. Prompt treatment with surgical debridement and corticosteroids is essential for reversal of visual complications.
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Poonia R, Aseri Y, Rawat DS, Singh BK. A Prospective Longitudinal Study to Evaluate the Outcomes of Success of Endoscopic DCR in Pediatric Age Group. Indian J Otolaryngol Head Neck Surg 2022; 74:18-22. [PMID: 35070921 PMCID: PMC8743305 DOI: 10.1007/s12070-020-02109-z] [Citation(s) in RCA: 1] [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: 06/20/2020] [Accepted: 08/25/2020] [Indexed: 11/28/2022] Open
Abstract
Children with nasolacrimal duct obstruction (NLDO) have different therapeutic approach from that used in adults. Dacryocystorhinostomy (DCR) is the most common procedure in adults but it is less frequently carried out in children, indicated in children which are refractory to probing. The objective of the study is to report a series of 30 cases of paediatric epiphora who underwent endoscopic endonasal dacryocystorhinostomy surgery, for primary obstruction of nasolacrimal duct and results, outcomes of success are evaluated. This is a prospective and non-comparative review of 30 cases of epiphora aged between 3 and 9 years from April 2018 to March 2019. The main outcome measures assessed were determined by the resolution of symptoms and the patency of the lacrimal anatomy confirmed by syringing or irrigating the nasolacrimal duct. Secondary outcomes included the presence of such complications as bleeding, scarring, and/or persistent epiphora and infection. In our study 30 patients underwent unilateral DCR surgery in NLDO. Out of 30 patients males were 17 and females were 13. The overall success rate of endoscopic DCR was 90%, and failed cases were mainly due to pre-saccal obstruction. No major complications were reported, minor complications occurred in about 60% of cases. Analysis of the results indicated that EDCR was safe and an effective therapeutic approach for treating nasolacrimal duct obstruction in pediatric age group patients having NLDO. It's considered as an alternative procedure to external dacryocystorhinostomy after a failed conservative treatment.
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Affiliation(s)
- Renu Poonia
- Department of Otolaryngology, Jawaharlal Nehru Medical College, Near Kalabaug, Ajmer, Rajasthan 305001 India
| | - Yogesh Aseri
- Department of Otolaryngology, Jawaharlal Nehru Medical College, Near Kalabaug, Ajmer, Rajasthan 305001 India
| | - Digvijay Singh Rawat
- Department of Otolaryngology, Jawaharlal Nehru Medical College, Near Kalabaug, Ajmer, Rajasthan 305001 India
| | - B. K. Singh
- Department of Otolaryngology, Jawaharlal Nehru Medical College, Near Kalabaug, Ajmer, Rajasthan 305001 India
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Gupta P, Rawat DS, Aseri Y, Verma PC, Singh BK. Evaluation of Recurrence and Hearing Outcome for Inactive Squamosal Disease after Cartilage Strengthening Tympanoplasty. Int Arch Otorhinolaryngol 2022; 26:e624-e629. [PMID: 36405474 PMCID: PMC9668415 DOI: 10.1055/s-0042-1742762] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2021] [Accepted: 12/01/2021] [Indexed: 11/29/2022] Open
Abstract
Introduction
Inactive squamosal disease is unique for having a conflicting treatment protocol, with an age-old debate between early surgical intervention or keeping patients in a long-term follow-up. The shifting paradigm is early intervention to prevent further progress into active disease and improve hearing outcome in its nascent stage.
Objective
To evaluate recurrence and hearing outcome in cases of inactive squamosal disease after cartilage strengthening tympanoplasty.
Methods
The study was conducted on 50 patients with inactive squamosal disease. Detailed examination was done to grade the retraction. All patients underwent autologous conchal cartilage tympanomastoidectomy with temporalis fascia grafting. Recurrence and hearing evaluations were done by pure tone audiogram at regular intervals for one year.
Results
Hearing loss was the most common presenting symptom. Isolated pars tensa retractions were more common (54%) than pars flaccida (12%), or those involving both (34%). Ossicular status was normal in only 14% of the cases, and the most common ossicular damage was to the lenticular process of the incus (52%). Three of the patients (6%) had residual perforation at the 3
rd
month of follow-up. Subjective improvement in hearing was reported by 42% patients. Hearing improvement greater than 10 dB was found in 24 patients (48%). Air–bone gap reduced from 25.16 ± 8.15 dB preoperatively to 12.90 ± 6.20 at 1 year of follow-up. Recurrence was seen in three patients (6%).
Conclusion
Early intervention by cartilage strengthening of weakened tympanic membrane and ossicular reconstruction not only offers better hearing results, but also prevents progress to active disease.
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Affiliation(s)
- Priyanshi Gupta
- Department of Ear, Nose, and Throat, Mahatma Gandhi Medical College and Hospital, Jaipur, Rajasthan, India
| | - Digvijay Singh Rawat
- Department of Ear, Nose, and Throat and Head and Neck Surgery, Jawaharlal Nehru Medical College, Ajmer, Rajasthan, India
| | - Yogesh Aseri
- Department of Ear, Nose, and Throat and Head and Neck Surgery, Jawaharlal Nehru Medical College, Ajmer, Rajasthan, India
| | - P. C. Verma
- Department of Ear, Nose, and Throat and Head and Neck Surgery, Jawaharlal Nehru Medical College, Ajmer, Rajasthan, India
| | - B. K. Singh
- Department of Ear, Nose, and Throat and Head and Neck Surgery, Jawaharlal Nehru Medical College, Ajmer, Rajasthan, India
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Sehra R, Rawat DS, Aseri Y, Tailor M, Chaudhary VK, Singh BK, Verma PC. Post-operative Sensorineural Hearing Loss After Middle Ear Surgery. Indian J Otolaryngol Head Neck Surg 2018; 71:1327-1333. [PMID: 31750173 DOI: 10.1007/s12070-018-1409-1] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2018] [Accepted: 05/17/2018] [Indexed: 11/27/2022] Open
Abstract
Chronic suppurative otitis media is managed by tympanomastoid surgery often requires mastoid drilling. Sometimes patients develop sensorineural hearing loss after middle ear surgery. Objective of the study was to compare pre and post operative bone conduction thresholds after middle ear surgeries. The study was conducted on 90 patients who had undergone middle ear surgeries, 30 patients of tympanoplasty (group I), modified intact canal wall mastoidectomy and tympanoplasty type-I (group II) and modified radical mastoidectomy (group III) each ware included. Demographic and clinical data were reviewed. Duration of surgery, ossicular and middle ear status and drilling time noted. Pre operative and post operative (after 3-4 months) bone conduction thresholds were compared statistically. A value of p < 0.05 was considered statistical significant. The average pre-operative hearing loss of study group was 43.78 ± 14.22 dB. Though postoperatively mean air conduction threshold improved to 36.07 ± 13.05 dB, six patients presented with deterioration of hearing. Mastoidectomy has been performed in all six. Post-operative worsening of bone conduction was seen in three patients (13.75-21.5 dB), one patient of group II and two patients of group III developed postoperative worsening of bone conduction thresholds. Significant hearing losses may occur after tympanomastoid surgery in few patients. While we are evaluating the results besides reporting average results such individual patient should be identified.
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Affiliation(s)
- Ritu Sehra
- JLN Medical College and Attached Hospital, Ajmer, Rajasthan 305001 India
| | | | - Yogesh Aseri
- JLN Medical College and Attached Hospital, Ajmer, Rajasthan 305001 India
| | - Manish Tailor
- JLN Medical College and Attached Hospital, Ajmer, Rajasthan 305001 India
| | | | - B K Singh
- JLN Medical College and Attached Hospital, Ajmer, Rajasthan 305001 India
| | - P C Verma
- JLN Medical College and Attached Hospital, Ajmer, Rajasthan 305001 India
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Chaudhary VK, Rawat DS, Tailor M, Verma PC, Aseri Y, Singh BK. Post Parotidectomy Quality of Life in Patients with Benign Parotid Neoplasm: A Prospective Study. Indian J Otolaryngol Head Neck Surg 2018; 71:363-368. [PMID: 31741987 DOI: 10.1007/s12070-018-1312-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2017] [Accepted: 03/17/2018] [Indexed: 11/28/2022] Open
Abstract
Parotid tumours are not uncommon. The management is surgical for benign and malignant parotid neoplasm. Due to the location of parotid gland and its intricate relationship with facial nerve, cosmetic and functional outcomes after parotid surgery are extremely important. Objectives of the study were to analyse facial nerve functions with emphasis on the quality of life of patients undergoing surgery for parotid neoplasm. A prospective study was conducted on patients presented with parotid neoplasm and undergone parotid surgery. Patient with malignant neoplasm were excluded. 30 patients with benign parotid neoplasm in final histopathology were included in the study. Post operative assessment of facial nerve was done using postparotidectomy facial nerve grading system. Symptom-specific QOL was assessed with the parotidectomy outcome inventory-8. Aesthetic outcome was evaluated with an ordinal scale. Posterior belly of digastric muscle and tragal pointer were the commonest landmark used for facial nerve identification. Temporary facial nerve dysfunction was present in six (20%) patients with marginal mandibular branch most commonly involved. 96% of the female patients and 91% of the male patients rated the cosmetic result as good or very good. A statistically significant difference is noted between superficial parotidectomy and total Parotidectomy for cosmetic outcome and sensory impairment. We noted that changed appearance due to resection of the parotid gland and scar and sensory impairment in the area affect the quality of life of patients and such affect are more after total conservative parotidectomy.
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Affiliation(s)
| | | | - Manish Tailor
- JLN Medical College and Attached Hospital, Ajmer, 305001 Rajasthan India
| | | | - Yogesh Aseri
- JLN Medical College and Attached Hospital, Ajmer, 305001 Rajasthan India
| | - B K Singh
- JLN Medical College and Attached Hospital, Ajmer, 305001 Rajasthan India
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Arora D, Garg K, Kaushik A, Sharma R, Rawat DS, Mandal AK. A Retrospective Analysis of Apheresis Donor Deferral and Adverse Reactions at a Tertiary Care Centre in India. J Clin Diagn Res 2017; 10:EC22-EC24. [PMID: 28050376 DOI: 10.7860/jcdr/2016/20707.8925] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2016] [Accepted: 08/24/2016] [Indexed: 11/24/2022]
Abstract
INTRODUCTION With increasing demand of platelet component each day, blood bank plays a pivotal role in ensuring supply of safe blood as and when required. Plateletpheresis procedure is a relatively simple, safe and important adjunct to blood bank inventory. However, recruitment of healthy blood donors is a challenge that the health industry is facing today. AIM To determine the reasons and rates of apheresis donor deferral along with investigation of adverse reactions encountered during the procedure. MATERIALS AND METHODS Records of single donor apheresis were retrospectively analysed from 1st January 2010 to 31st December 2014. The study was carried out at Blood Bank, Safdarjung Hospital, New Delhi, India. The donor details that were studied included - age, sex, type of donation (voluntary/replacement/ repeat), reason for donor deferral and type of adverse reaction, if encountered during the procedure. RESULTS Among the 478 donors screened for plateletpheresis procedure during a study period of 5 years, 134 (28.03%) were deferred. Temporary deferrals accounted for majority (93.28%) of the deferrals. Low platelet count (50.75%) was the main reason of donor deferral followed by low haemoglobin (20.89%). Amongst the 344 selected donors, 15 (4.36%) had some type of adverse reaction associated with the procedure. CONCLUSION We suggest that the selection criteria for plateletpheresis donors should be revised to deal with shortage of apheresis donors. The criteria regarding minimum pre-procedure platelet count (above1.5 lac/μl) and haemoglobin (above 12.5 g/dl) need to be lowered so as to suit the Indian scenario. The lower adverse reaction rates, 14/344 (4.06%) associated with this procedure encourages safety of donors and is important in recruitment of new donors.
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Affiliation(s)
- Disha Arora
- Ex-Senior Resident, Department of Pathology, Safdarjung Hospital , Delhi, India
| | - Ketan Garg
- Senior Resident, Department of Pathology, Safdarjung Hospital , Delhi, India
| | - Ankit Kaushik
- Senior Resident, Department of Pathology, Safdarjung Hospital , Delhi, India
| | - Richa Sharma
- Senior Resident, Department of Pathology, Safdarjung Hospital , Delhi, India
| | - D S Rawat
- Ex-Associate Professor and Head of Blood Bank, Department of Pathology, Safdarjung Hospital , Delhi, India
| | - A K Mandal
- Professor and Head, Department of Pathology, Safdarjung Hospital , Delhi, India
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Arora D, Garg K, Rawat DS. Seroprevalence of transfusion-transmissible infections among replacement and voluntary blood donors in a tertiary care hospital. Indian J Sex Transm Dis AIDS 2017; 38:101-102. [PMID: 28442818 DOI: 10.4103/0253-7184.203442] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Affiliation(s)
- Disha Arora
- Department of Pathology, Safdarjung Hospital, New Delhi, India
| | - Ketan Garg
- Department of Pathology, Safdarjung Hospital, New Delhi, India
| | - D S Rawat
- Department of Pathology, Safdarjung Hospital, New Delhi, India
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Chandra S, Rawat DS. Medicinal plants of the family Caryophyllaceae: a review of ethno-medicinal uses and pharmacological properties. Integr Med Res 2015; 4:123-131. [PMID: 28664118 PMCID: PMC5481791 DOI: 10.1016/j.imr.2015.06.004] [Citation(s) in RCA: 54] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2015] [Revised: 06/25/2015] [Accepted: 06/25/2015] [Indexed: 11/29/2022] Open
Abstract
Several species of the family Caryophyllaceae are widely used by many ethnic communities as traditional medicine throughout the world. The highest number of plants of the family are used in Chinese traditional medicine. The ethnopharmacologial studies of this family indicate that plants of the family possess anticancer, antibacterial, antifungal, antiviral, antioxidant, and anti-inflammatory properties. Other miscellaneous properties reported are ribosome inactivation properties, inhibition of prostatic enlargement in rats, and inhibition of intestinal enzyme carboxyelasterase in rats, cerebro-protective activity, and antiobesity in rats. Few reviews have been published yet, providing information regarding medicinal plants of the family and their biomedical properties. All published reviews have focused either on a particular taxa or a few species. The present review is focused on the traditional medicinal uses of the plants of the family Caryophyllaceae along with phytochemical and pharmacological studies of the family. A study of the literature revealed significant traditional medicinal importance of the family. Major chemical constituents of Caryophyllceae are saponins, Phytoecdysteroids, benzenoids, phenyl propanoids, and nitrogen containing compounds. The most important property of plants of the family is anticancer activity and is shown by the large number of plant species studied. This review of traditional medicinal and pharmacological uses of plants of the family, provide a ground for future research in the family.
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Affiliation(s)
- Satish Chandra
- Department of Biological Sciences, College of Basic Science & Humanities, Govind Ballabh Pant University of Agriculture and Technology Pantnagar, Pantnagar, India
| | - D S Rawat
- Department of Biological Sciences, College of Basic Science & Humanities, Govind Ballabh Pant University of Agriculture and Technology Pantnagar, Pantnagar, India
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Agarwal S, Udawat P, Rawat DS. Trunklike projection in 10-day-old girl. JAMA Pediatr 2013; 167:1081-2. [PMID: 24190017 DOI: 10.1001/jamapediatrics.2013.2556] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
Affiliation(s)
- Sunita Agarwal
- Department of Otorhinolaryngology and Head-Neck Surgery, SMS Medical College and Hospital, Jaipur, Rajasthan, India
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Manchanda V, Rai S, Gupta S, Rautela RS, Chopra R, Rawat DS, Verma N, Singh NP, Kaur IR, Bhalla P. Development of TaqMan real-time polymerase chain reaction for the detection of the newly emerging form of carbapenem resistance gene in clinical isolates of Escherichia coli, Klebsiella pneumoniae, and Acinetobacter baumannii. Indian J Med Microbiol 2011; 29:249-53. [DOI: 10.4103/0255-0857.83907] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.6] [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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Gandhoke I, Rawat DS, Rai A, Khare S, Ichhpujani RL. Pandemic Influenza A (H1N1) 2009 in India: Duration of virus shedding in patients under antiviral treatment. Indian J Med Microbiol 2011; 29:37-41. [DOI: 10.4103/0255-0857.76522] [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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Negi SS, Grover SS, Rautela SS, Rawat DS, Gupta S, Khare S, Lal S, Rai A. Direct detection and serogroup characterization of Neisseria meningitidis from outbreak of meningococcal meningitis in Delhi. Iran J Microbiol 2010; 2:73-9. [PMID: 22347552 PMCID: PMC3279770] [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] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
BACKGROUND AND OBJECTIVES Rapid clinical manifestation/progression of the meningococcal meningitis and lacunae in conventional bacteriological test often encourages indiscriminate use of antibiotics much before the etiology is established. Accordingly this study was planned to evaluate ctrA PCR for rapid molecular detection. In addition, multiplex PCR and sequencing was done for serogroup prediction to provide essential epidemiological and laboratory evidence for decision makers of health department of the country for choosing appropriate vaccine and phylogenetic analysis to establish its lineage. MATERIALS AND METHODS 73 CSF samples, collected from equal number of suspected cases, were investigated by both bacteriological (microscopy, culture, LA and drug sensitivity testing) as well as molecular tests i.e. PCR targeting conserved ctrA gene, multiplex PCR for serogroup characterization and DNA sequencing. RESULTS ctrA PCR revealed sensitivity, specificity, positive predictive value and negative predictive values of 93.15%, 100%,100%, and 88.23% respectively. Multiplex PCR based genogrouping followed by DNA sequencing, BLAST and phylogenetic analysis revealed complete homology with earlier submitted Neisseria meningitidis serogroup A strain Z2491 to suggest the sole involvement of only serogroup A in the outbreak. Two strains showed resistance to cefuroxime, ciprofloxacin, nalidixic acid. Only one strain showed resistance to ciprofloxacin, emphasizing the need for a constant surveillance system. CONCLUSION These diagnostic molecular tools are of paramount importance in establishing etiology, serogrouping, and epidemiological surveillance especially in developing countries like India.
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Affiliation(s)
- SS Negi
- Biotechnology & Biochemistry Division,Corresponding author: Dr. Sanjay Singh Negi Address: Biotechnology & Biochemistry Division, National Centre for Disease Control (NCDC) (Previously NICD) 22-Shamnath marg, Delhi-54, India. Tel: +91-9899551119. E-mail:
| | - SS Grover
- Biotechnology & Biochemistry Division
| | | | - DS Rawat
- Biotechnology & Biochemistry Division
| | | | | | | | - A Rai
- Biotechnology & Biochemistry Division
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Rawat DS, Migone AD, Riccardo JL, Ramirez-Pastor AJ, Romá FJ. Surface area measurements with linear adsorbates: an experimental comparison of different theoretical approaches. Langmuir 2009; 25:9227-9231. [PMID: 19441827 DOI: 10.1021/la9008009] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
The specific area of a substrate was determined from the results of adsorption isotherms performed with a sequence of four alkanes, from methane to butane, using three different approaches. The data were first analyzed using the BET equation and the point B methods; these results were compared with those obtained using a new equation designed for examining the case of multisite occupancy. The new model specifically accounts for sites that are left uncovered in the case of adsorption by linear adsorbates. Of these three, only the last method gives essentially the same value for the specific surface area of the substrate when different adsorbates are used to measure it. The other two, more traditional, approaches give values of the specific surface area that decrease as the length of the adsorbate used increases.
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Affiliation(s)
- D S Rawat
- Department of Physics, Southern Illinois University, Carbondale Illinois 62901, USA
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Thakur S, Singh S, Pasha ST, Rawat DS, Lal S, Mittal V. Use of multilocus microsatellite typing (MLMT) for the genetic analysis of Indian isolates of Leishmania donovani. Ann Trop Med Parasitol 2009; 103:461-6. [PMID: 19583916 DOI: 10.1179/136485909x451799] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- S Thakur
- Division of Biochemistry and Biotechnology, National Institute of Communicable Diseases, 22 Sham Nath Marg, Delhi - 110 054, India
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Rawat DS, Krungleviciute V, Heroux L, Bulut M, Calbi MM, Migone AD. Dependence of single-walled carbon nanotube adsorption kinetics on temperature and binding energy. Langmuir 2008; 24:13465-13469. [PMID: 18954094 DOI: 10.1021/la8022002] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
We present results for the isothermal adsorption kinetics of methane, hydrogen, and tetrafluoromethane on closed-ended single-walled carbon nanotubes. In these experiments, we monitor the pressure decrease as a function of time as equilibrium is approached, after a dose of gas is added to the cell containing the nanotubes. The measurements were performed at different fractional coverages limited to the first layer. The results indicate that, for a given coverage and temperature, the equilibration time is an increasing function of E/(k(B)T), where E is the binding energy of the adsorbate and k(B)T is the thermal energy. These findings are consistent with recent theoretical predictions and computer simulations results that we use to interpret the experimental measurements.
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Affiliation(s)
- D S Rawat
- Department of Physics, Southern Illinois University, Carbondale, Illinois 62901, USA
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Rawat DS, Lumb V, Sharma YD, Pasha ST, Singh G. Histone as future drug target for malaria. J Commun Dis 2007; 39:119-128. [PMID: 18338692] [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: 05/26/2023]
Abstract
Malaria continues to be a major cause of mortality and morbidity in tropical countries and affecting around 100 countries of the world. As per WHO estimates, 300-500 million are being infected and 1-3 million deaths annually due to malaria. With the emerging knowledge about genome sequence of all the three counterparts involved in the disease of malaria, the parasite Plasmodium, vector Anopheles and host Homo sapien have helped the scientists to understand interactions between them. Simultaneous advancement in technology further improves the prospects to discover new targets for vaccines and drugs. Though the malaria vaccine is still far away in this situation there is need to develop a potent and affordable drug(s). Histones are the key protein of chromatin and play an important role in DNA packaging, replication and gene expression. They also show frequent post-translation modifications. The specific combinations of these posttranslational modifications are thought to alter chromatin structure by forming epigenetic bar codes that specify either transient or heritable patterns of genome function. Chromatin regulators and upstream pathways are therefore seen as promising targets for development of therapeutic drugs.
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Affiliation(s)
- D S Rawat
- Division of Biochemistry & Biotechnology, National Institute of Communicable Diseases, Delhi
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Talapatra S, Rawat DS, Migone AD. Possible existence of a higher coverage quasi-one-dimensional phase of argon adsorbed on bundles of single-walled carbon nanotubes. J Nanosci Nanotechnol 2002; 2:467-470. [PMID: 12908280 DOI: 10.1166/153348802760394007] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
We present results of Ar adsorption isotherms at very low coverages in the first layer and, beyond monolayer completion, on bundles of close-ended single-walled carbon nanotubes. The low coverage results were used to determine the isosteric heat of adsorption and the binding energy of Ar in the groove sites in the first layer. The higher coverage results show evidence of the possible formation of a second-layer groove phase, beyond monolayer completion. Our results for higher coverages are compared with recent computer simulations for this system.
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Affiliation(s)
- S Talapatra
- Department of Physics, Southern Illinois University at Carbondale, Carbondale, Illinois, USA
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Affiliation(s)
- D S Rawat
- Department of Chemistry, Indiana University, Bloomington, Indiana 47405, USA
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Sharma I, Rawat DS, Pasha ST, Biswas S, Sharma YD. Complete nucleotide sequence of the 6 kb element and conserved cytochrome b gene sequences among Indian isolates of Plasmodium falciparum. Int J Parasitol 2001; 31:1107-13. [PMID: 11429175 DOI: 10.1016/s0020-7519(01)00218-1] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The malaria parasite contains a nuclear genome with 14 chromosomes and two extrachromosomal DNA molecules of 6 kb and 35 kb in size. The smallest genome, known as the 6 kb element or mitochondrial DNA, has been sequenced from several Plasmodium falciparum isolates because this is a potential drug target. Here we describe the complete nucleotide sequence of this element from an Indian isolate of P. falciparum. It is 5967 bp in size and shows 99.6% homology with the 6 kb element of other isolates. The element contains three open reading frames for mitochondrial proteins-cytochrome oxidase subunit I (CoI), subunit III (CoIII) and cytochrome b (Cyb) which were found to be expressed during blood stages of the parasite. We have also sequenced the entire cyb gene from several Indian isolates of P. falciparum. The rate of mutation in this gene was very low since 12 of 14 isolates showed the identical sequence. Only one isolate showed a maximum change in five amino acids whereas the other isolate showed only one amino acid change. However, none of the Indian isolates showed any change in those amino acids of cyb which are associated with resistance to various drugs as these drugs are not yet commonly used in India.
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Affiliation(s)
- I Sharma
- Department of Biotechnology, All India Institute of Medical Sciences, Ansari Nagar, - 110029, New Delhi, India
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Rawat DS, Benites PJ, Incarvito CD, Rheingold AL, Zaleski JM. The contribution of ligand flexibility to metal center geometry modulated thermal cyclization of conjugated pyridine and quinoline metalloenediynes of copper(I) and copper(II). Inorg Chem 2001; 40:1846-57. [PMID: 11312741 DOI: 10.1021/ic010014l] [Citation(s) in RCA: 44] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
We report the syntheses, reactivities, and structure evaluations of a series of Cu(I) and Cu(II) metalloenediynes of conjugated 1,6-bis(pyridine-3)hex-3-ene-1,5-diyne (PyED, 7) and 1,6-bis(quinoline-3)hex-3-ene-1,5-diyne (QnED, 8) enediyne ligands, as well as their benzoenediyne analogues. Differential scanning calorimetry demonstrates that the [Cu(PyED)(2)](NO(3))(2) (11) exhibits a Bergman cyclization temperature (156 degrees C) which is dramatically reduced from that of the corresponding [Cu(PyED)(2)](PF(6)) (19) analogue (326 degrees C), indicating that large differences in the reactivities of these metalloenediynes can be accessed by variations in metal oxidation state. The distorted, 4-coordinate dichloride compound Cu(PyED)(Cl)(2) (15) exhibits a cyclization temperature (265 degrees C) between those of 11 and 19, suggesting that variation in geometry of the copper center is responsible for the wide range of reactivities. Similar results are obtained for the benzoenediyne and quinoline analogues. The structures of the Cu(II) systems have also been evaluated by a combination of electronic absorption and EPR spectroscopies which reveal tetragonal, 6-coordinate structures for the bis(enediyne) complexes, and tetrahedrally distorted 4-coordinate Cu(enediyne)Cl(2) species. For the bis(quinoline) enediyne derivatives 12 and 14 the larger g-anisotropy (g( parallel) = 2.27-2.28; g( perpendicular) = 2.06-2.07) indicates strong oxygen coordination from counterion. Molecular mechanics/dynamics calculations reveal that the geometries of these metal centers force the alkyne termini to a wide range of distances (3.85-4.20 A), thereby accounting for the variability in Bergman cyclization temperatures. Overall, the results show that ligand rigidity plays a prominent role in the conformational response of the enediyne to metal center geometry, which results in enhanced variations in the Bergman cyclization temperatures between complexes of different geometries.
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Affiliation(s)
- D S Rawat
- Department of Chemistry, Indiana University, Bloomington, Indiana 47405, USA
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Misra A, Nishanth S, Pasha ST, Pandey RM, Sethi P, Rawat DS. Relationship of Xba1 and EcoR1 polymorphisms of apolipoprotein-B gene to dyslipidemia and obesity in Asian Indians in North India. Indian Heart J 2001; 53:177-83. [PMID: 11428473] [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: 02/20/2023] Open
Abstract
BACKGROUND Genetic investigation of dyslipidemia and obesity prevalent in the Indian population form the basis of this study. METHODS AND RESULTS The frequency of restriction fragment length polymorphisms (Xba1 and EcoR1) of the apolipoprotein-B gene was investigated in a case-control study of 30 hyperlipidemic and 40 normolipidemic subjects. By univariate analysis, old age, higher body mass index, waist-hip ratio and sum of four skinfolds were found to be significantly associated with hyperlipidemia. The frequencies of X- and E+ alleles of the apolipoprotein-B gene were significantly higher in North Indians in the state of New Delhi (0.83 and 0.91, respectively) as compared to the observations made in Caucasians in previous studies, but was similar to the frequency reported in Indians settled in Singapore and the UK. There were no significant differences in the allele or genotype frequencies of either Xba1 or EcoR1 polymorphisms between the hyperlipidemic and normolipidemic groups. On multiple logistic regression analysis considering body mass index, waist-hip ratio, percentage body fat and genotypes as independent variables, no association was observed between the apolipoprotein-B genotypes and serum lipid components. Further, there were no associations between apolipoprotein-B polymorphisms and generalized obesity (as assessed by body mass index, sum of four skinfolds, and percentage total body fat) and abdominal obesity (as measured by waist circumference and waist-hip ratio). CONCLUSIONS We conclude that apolipoprotein-B (Xba1 and EcoR1) polymorphisms do not appear to influence serum lipid levels and parameters of generalized andregional obesity in the study sample.
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Affiliation(s)
- A Misra
- Department of Medicine and Biostatistics, All India Institute of Medical Sciences, New Delhi.
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Maulik PR, Avasthi K, Sarkhel S, Chandra T, Rawat DS, Logsdon B, Jacobson RA. Disappearance of intramolecular stacking due to one-atom movement or increment of a 'propylene linker' in pyrazolo[3,4-d]pyrimidine-based flexible models. Acta Crystallogr C 2000; 56 Pt 11:1361-3. [PMID: 11077299 DOI: 10.1107/s0108270100010775] [Citation(s) in RCA: 3] [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] [Received: 06/02/2000] [Accepted: 07/31/2000] [Indexed: 11/11/2022] Open
Abstract
In the crystal structures of 4,6-dimethylthio-1-[3-(4, 6-dimethylthio-2H-pyrazolo[3, 4-d]pyrimidin-2-yl)propyl]-1H-pyrazolo[3,4-d]pyrimidine, C(17)H(20)N(8)S(4), and 1-[4-(4-methoxy-6-methylthio-1H-pyrazolo[3, 4-d]pyrimidin-1-yl)butyl]-5-methyl-6-methylthio-4, 5-dihydro-1H-pyrazolo[3,4-d]pyrimidin-4-one, C(18)H(22)N(8)O(2)S(2), only intermolecular stacking due to aromatic pi-pi interactions between pyrazolo[3,4-d]pyrimidinerings is present.
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Affiliation(s)
- P R Maulik
- Membrane Biology Division, Central Drug Research Institute, Lucknow 226 001, India.
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Banerjee BD, Zaidi SS, Pasha ST, Rawat DS, Koner BC, Hussain QZ. Levels of HCH residues in human milk samples from Delhi, India. Bull Environ Contam Toxicol 1997; 59:403-406. [PMID: 9256393 DOI: 10.1007/s001289900492] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Affiliation(s)
- B D Banerjee
- Department of Biochemistry, University College of Medical Sciences, Delhi, India
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Pasha ST, Sethi P, Rawat DS, Hussain QZ. Inhibition of Plasmodium knowlesi isoenzyme bands using antibody produced by lymphocyte hybridoma technique. J Commun Dis 1986; 18:198-202. [PMID: 3106465] [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: 01/04/2023]
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Rawat DS, Upreti HB, Das SK. Lipid composition of Cryptococcus neoformans. Microbiologica 1984; 7:299-307. [PMID: 6392829] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
The lipid composition of Cryptococcus neoformans grown in Sabouraud's dextrose broth (shake culture) was analysed. The organism contained extremely low amounts of lipid (0.96% dry weight basis) of which 86.1% were nonpolaris lipids, 3.4% phospholipids and the rest were glycolipids and pigments. Alkoxylipids (41%), tryglicerides (18%), diglycerides (7.4%), free fatty acids (5.4%), sterols (4.7%), sterol ester (3.9%) and monoglycerides (2.2%) were found in the nonpolar lipid fraction of C. neoformans. The phospholipid composition (expressed as relative abundance) was: phosphatidylinositol (11.5%), lysophosphatidyl ethanolamine (10.9%), cardiolipin (10.1%), a glycophospholipid (9.5%), lysophosphatidyl choline (4.7%), phosphatidic acid (4.1%), phosphatidyl choline (28.1%), phosphatidyl ethanolamine (14.5%) and an unidentified lipid (6.5%). Phosphatidyl serine, sphingolipids and cerebrosides, generally found in yeast-like fungi, were absent. Probable reasons for the abnormally low lipid content are discussed.
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Upreti HB, Rawat DS, Das SK. Virulence, capsule size and lipid composition interrelation of Cryptococcus neoformans. Microbiologica 1984; 7:371-4. [PMID: 6392831] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
Virulence and lipid composition were studied in three isolates of Cryptococcus neoformans. Virulence was evaluated by injecting mice intraperitoneally with 10(7) cells and recording organ involvement and spontaneous death over a 25 day period. Though the least virulent strain contained the least amount of total lipid and phospholipids, none of the lipids showed any quantitative relation to virulence. There was no major difference in the phospholipid composition among the three strains. Fungal cells with bigger capsules had a lower lipid content. The role of lipid in the defence mechanism of pathogenic fungi during the host invasion process is discussed.
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Pasha ST, Rawat DS, Sethi P, Hussain QZ. P. knowlesi: enzyme typing in agarose electrophoresis. J Commun Dis 1984; 16:126-30. [PMID: 6238080] [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: 01/19/2023]
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Rawat DS, Das SK. Lipid composition of Microsporum gypseum. Microbiologica 1982; 5:361-70. [PMID: 7154975] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
Lipid composition of Microsporum gypseum grown in Sabouraud's liquid media on a rotary shaker were analyzed. The organism contains 6.07% lipid (dry weight basis), of which 75.88% is neutral lipids, 0.9% phospholipids and the rest are glycolipids and pigments. Phospholipids of M. gypseum contain phosphatidyl choline (44.21%), phosphatidyl ethanolamine (17.8%), polyphospho inositide (12.13%), phosphatidyl inositol (8.24%), phosphatidic acid (4.61%) and cardiolipin. Phosphatidyl serine is absent. The neutral lipid composition (expressed as mg/g dry weight of mycelia) of M. gypseum is monoglycerides (1.35), diglyceride (2.87), triglycerides (35.79), free fatty acids (1.00), sterols (3.95) and sterol esters (1.13).
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Kapoor SC, Mody GD, Sen AK, Rawat DS, Pandey CM, Monga PM. Endemic typhoid fever in the railway population of Ajmer (a study of over 300 patients). J Assoc Physicians India 1969; 17:671-9. [PMID: 5356704] [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: 01/14/2023]
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Kapoor SC, Sharma SK, Rawat DS. Deterioration and relapse in pulmonary tuberculosis among railway employees. Indian J Chest Dis 1969; 11:138-45. [PMID: 5375578] [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: 01/14/2023]
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Kapoor SC, Rawat DS, Sharma SK. Significance of the second heart sound at the epigastrium in the clinical diagnosis of cor pulmonale. Indian J Chest Dis 1968; 10:22-5. [PMID: 5761032] [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: 01/16/2023]
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