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Tewari S, Misra V, Kumar V, Mishra RR, Yadav K, Sangma H. Prevalence of precursor lesions (P53 signature, SCOUT, STIL, STIC) in fallopian tubes resected for non-neoplastic causes. INDIAN J PATHOL MICR 2022; 65:610-616. [PMID: 35900489 DOI: 10.4103/ijpm.ijpm_529_21] [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] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/15/2023] Open
Abstract
BACKGROUND High-grade pelvic serous carcinoma is a common cause of death in women worldwide and India. Recent evidence has clearly implicated the changes in the mucosa of the fimbrial end of the fallopian tube in its pathogenesis. OBJECTIVE 1) To study histopathology features of surgically resected specimens of fallopian tubes received with non-neoplastic lesions of the uterus and ovary for the presence of any precursor lesions [secretory cell outgrowth (SCOUT), serous tubal intraepithelial lesion (STIL), p53 signatures, and serous tubal intraepithelial carcinoma (STIC)]. 2) To confirm the findings with immunohistochemistry. 3) To correlate the prevalence of precursor lesions with clinical parameters and benign lesions of the uterus and ovaries. MATERIALS AND METHODS Assessment of histopathological changes in 100 specimens of distal fallopian tubes was done using the sectioning and extensive examination of the fimbrial end (SEE-FIM) protocol. H and E stain followed by immunohistochemistry for Bcl-2, p53, and Ki-67. The statistical significance of the difference in the mean values of precursor areas was evaluated by an unpaired t-test. RESULTS Among 100 specimens taken on H and E, precursor lesions were suspected in 49% of the cases. SCOUT, suspicious for STIC, suspicious for STIC with areas of SCOUT, and unequivocal for STIC with areas of SCOUT were seen in 8%, 4%, 33%, and 4% of the cases, respectively. However, on IHC, SCOUTS were confirmed in 45% of the cases, p53 signature in 2%, STIL in 9%, and STIC in 4% of the cases. CONCLUSION Sectioning and extensive examination of the fimbrial end (SEE-FIM) should be routinely done as it provides the opportunity to detect the early malignant changes. It may help in evolving the strategies for early detection, management, and reducing mortality.
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Affiliation(s)
- Shatakshee Tewari
- Department of Pathology, Moti Lal Nehru Medical College, Prayagraj, Uttar Pradesh, India
| | - Vatsala Misra
- Department of Pathology, Moti Lal Nehru Medical College, Prayagraj, Uttar Pradesh, India
| | - Varsha Kumar
- Department of Pathology, Moti Lal Nehru Medical College, Prayagraj, Uttar Pradesh, India
| | - Ravi Rani Mishra
- Department of Pathology, Moti Lal Nehru Medical College, Prayagraj, Uttar Pradesh, India
| | - Kusum Yadav
- Department of Pathology, Moti Lal Nehru Medical College, Prayagraj, Uttar Pradesh, India
| | - Himalina Sangma
- Department of Pathology, Moti Lal Nehru Medical College, Prayagraj, Uttar Pradesh, India
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Kishor C, Mishra RR, Saraf SK, Kumar M, Srivastav AK, Nath G. Authors' response. Indian J Med Res 2017; 144:484. [PMID: 28139549 PMCID: PMC5320856 DOI: 10.4103/0971-5916.198690] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Affiliation(s)
- C Kishor
- Department of Orthopaedics, Institute of Medical Sciences, Banaras Hindu University, Varanasi 221 005, Uttar Pradesh, India
| | - R R Mishra
- Department of Microbiology, Institute of Medical Sciences, Banaras Hindu University, Varanasi 221 005, Uttar Pradesh, India
| | - S K Saraf
- Department of Orthopaedics, Institute of Medical Sciences, Banaras Hindu University, Varanasi 221 005, Uttar Pradesh, India
| | - M Kumar
- Department of Pathology, Institute of Medical Sciences, Banaras Hindu University, Varanasi 221 005, Uttar Pradesh, India
| | - A K Srivastav
- Department of Radiodiagnosis and Imaging, Institute of Medical Sciences, Banaras Hindu University, Varanasi 221 005, Uttar Pradesh, India
| | - G Nath
- Department of Microbiology, Institute of Medical Sciences, Banaras Hindu University, Varanasi 221 005, Uttar Pradesh, India
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Tewari M, Kumar A, Mishra RR, Kumar M, Shukla HS. HER2 Expression in Gastric and Gastroesophageal Cancer: Report from a Tertiary Care Hospital in North India. Indian J Surg 2015; 77:447-51. [PMID: 26730043 PMCID: PMC4692956 DOI: 10.1007/s12262-013-0871-y] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2012] [Accepted: 01/17/2013] [Indexed: 02/05/2023] Open
Abstract
Despite improvements in chemotherapy, survival of metastatic gastric and gastroesophageal junction (GEJ) adenocarcinoma remains poor. Trastuzumab, a monoclonal antibody targeting the human epidermal growth factor receptor 2 (HER2), has shown promise in improving survival of these patients by a recent large phase III trial. HER2 status in gastric and GEJ cancers, although reported from across the world, is yet unknown in India due to lack of published literature from the country. HER2 status in 70 samples of gastric and GEJ adenocarcinomas (Siewert type III) was evaluated by immunohistochemistry (IHC) in this study using the gastric cancer scoring system. It was also correlated with clinic-pathologic factors. Samples with IHC score 2+ and 3+ were taken as HER2 positive. HER2 overexpression was found in 15 (21.4 %) samples, was significantly (p = 0.006) more common in intestinal type (45 %), but it did not correlate with age, gender, stage, or grade of tumor and did not affect the 2-year disease-free survival. HER2 overexpression is found only in a minority of patients with gastric and GEJ cancers in the Indian population. A large cohort of patients with a longer follow-up will be required to assess for any significant statistical association of HER2 expression with prognosis of these patients.
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Affiliation(s)
- Mallika Tewari
- />Department of Surgical Oncology, Institute of Medical Sciences, Banaras Hindu University, 7 SKG Colony, Lanka, Varanasi, 221005 Uttar Pradesh India
| | - Akhileshwar Kumar
- />Department of Surgical Oncology, Institute of Medical Sciences, Banaras Hindu University, 7 SKG Colony, Lanka, Varanasi, 221005 Uttar Pradesh India
| | - RR Mishra
- />Department of Surgical Oncology, Institute of Medical Sciences, Banaras Hindu University, 7 SKG Colony, Lanka, Varanasi, 221005 Uttar Pradesh India
- />Department of Microbiology, Institute of Medical Sciences, Banaras Hindu University, Varanasi, Uttar Pradesh India
| | - Mohan Kumar
- />Department of Pathology, Institute of Medical Sciences, Banaras Hindu University, Varanasi, Uttar Pradesh India
| | - Hari S Shukla
- />Department of Surgical Oncology, Institute of Medical Sciences, Banaras Hindu University, 7 SKG Colony, Lanka, Varanasi, 221005 Uttar Pradesh India
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Mishra RR, Dhal B, Dutta SK, Dangar TK, Das NN, Thatoi HN. Optimization and characterization of chromium(VI) reduction in saline condition by moderately halophilic Vigribacillus sp. isolated from mangrove soil of Bhitarkanika, India. J Hazard Mater 2012; 227-228:219-226. [PMID: 22677051 DOI: 10.1016/j.jhazmat.2012.05.063] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/24/2012] [Revised: 05/07/2012] [Accepted: 05/10/2012] [Indexed: 06/01/2023]
Abstract
A Gram-positive moderately halophilic Cr(VI) tolerant bacterial strain H4, isolated from saline mangrove soil, was identified as Vigribacillus sp. by biochemical characterization and 16S rRNA analysis. In LB medium, the strain could tolerate up to 1000 mg L(-1) Cr(VI) concentration and reduced 90.2 and 99.2% of 100 mg L(-1) Cr(VI) under optimized set of condition within 70 h in absence and presence of 6 wt.% NaCl, respectively. The fitting of time course reduction data to an exponential rate equation yielded the Cr(VI) reduction rate constants in the range (0.69-5.56)×10(-2)h(-1). Analyses of total chromium and bacterial cell associated with reduced product by AAS, SEM/EDS, TEM/SAED, FT-IR and UV-vis-DRS indicated the formation of about 35% of insoluble Cr(III) either as Cr(OH)(3) precipitate in nanometric size or immobilized on the bacterial cell surface while the remaining 65% of reduced chromium was present as soluble Cr(III) in the growth medium. Powder XRD analysis revealed the amorphous nature of the precipitated Cr(OH)(3). The high Cr(VI) reducing ability of the strain under saline condition suggests the Vigribacillus sp. as a new and efficient strain capable of remediating highly saline Cr(VI) polluted industrial effluents.
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Affiliation(s)
- R R Mishra
- Department of Biotechnology, North Orissa University, Baripada 757003, Orissa, India
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Panigrahi J, Behera M, Maharana S, Mishra RR. Biomolecular changes during in vitro organogenesis of Asteracantha longifolia (L.) Nees--a medicinal herb. Indian J Exp Biol 2007; 45:911-919. [PMID: 17948741] [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: 05/25/2023]
Abstract
High frequency plant regeneration in A. longifolia (L.) was achieved from leaf explant implanted on MS basal medium supplemented with NAA (0.5 mg/l) + BA (2.0 mg/l) through intervening callus phase. Well-developed shoots (>3cm) were successfully rooted on MS medium supplemented with NAA (0.1 mg/l). Protein and total soluble sugar contents were maximum during organogenesis and multiple shoot induction phase compared with non-organogenic callus and root induction phase. Esterase and catalase activities were maximum during organogenic differentiation, while activities were minimum at non-differentiated callus stages. Peroxidase activities were higher during rhizogenesis. Contradiction to peroxidase activity, acid phosphatase activities were high during organogenesis and declined during rhizogenesis. SDS-PAGE analysis of total soluble proteins revealed expression of non-organogenic callus (97.9 kDa), organogenic callus (77.2, 74.1, 21.9 kDa), multiple shoot induction phase (106.6, 26.9, 11.6 kDa) and root induction phase (15.9 kDa) specific polypeptides. Esterase zymogram revealed one band (Rm 0.204) appeared in both organogenic callus and multiple shoot induction phase. Peroxidase zymogram detected two stage specific bands, one band (Rm 0.42) was specific to root induction phase, while another (Rm 0.761) was specific to multiple shoot induction. Catalase and acid phosphatase zymogram resolved one band (Rm 0.752 and 0.435, respectively) in differentiated stages including both multiple shoot induction phase and root induction phase, but absent in undifferentiated phases.
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Affiliation(s)
- J Panigrahi
- Plant Tissue Culture Laboratory, Division of Biotechnology, Majhighariani Institute of Technology and Science, Sriram Vihar, Rayagada 765 001, India.
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Premkumar DR, Mishra RR, Overholt JL, Simonson MS, Cherniack NS, Prabhakar NR. L-type Ca(2+) channel activation regulates induction of c-fos transcription by hypoxia. J Appl Physiol (1985) 2000; 88:1898-906. [PMID: 10797155 DOI: 10.1152/jappl.2000.88.5.1898] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.5] [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: 11/22/2022] Open
Abstract
In the present study we examined the intracellular pathways that link hypoxia to activation of c-fos gene expression. Experiments were performed on rat pheocromocytoma-12 (PC-12) cells. c-fos mRNA and promoter activities were analyzed by RT-PCR and reporter gene assays, respectively. BAPTA, a Ca(2+) chelator, inhibited c-fos mRNA and promoter activation by hypoxia. Nitrendipine, an L-type Ca(2+)-channel blocker, abolished, whereas BAY K 8644, an L-type channel agonist, enhanced c-fos activation by hypoxia. Ca(2+) currents were augmented reversibly by hypoxia, suggesting that Ca(2+) influx mediated by L-type Ca(2+) channels is essential for c-fos activation by hypoxia. We next determined downstream pathways activated by intracellular Ca(2+) concentration. Immunoblot analysis revealed Ca(2+)/calmodulin-dependent kinase II (CaMKII) protein in PC-12 cells and revealed that hypoxia increased the enzyme activity. KN-93, a CaMK inhibitor, blocked CaMKII activation and c-fos promoter stimulation by hypoxia. Ectopic expression of an active mutant of CaMKII (pCaMKII290) stimulated c-fos promoter activity under normoxia. Hypoxia increased phosphorylation of CREB at the serine residue 133 (Ser-133), and KN-93 attenuated this effect. Point mutations at the Ca(2+)/cAMP-responsive cis-element (Ca/CRE) attenuated, whereas point mutations in the serum-responsive cis-element (SRE) abolished transcriptional activation of c-fos by hypoxia. These results demonstrate that c-fos activation by hypoxia involves CaMK activation and CREB phosphorylation at Ser-133 and requires Ca/CRE and SRE. These observations demonstrate that Ca(2+)-dependent signaling pathways play a crucial role in induction of c-fos gene expression, which may underlie long-term adaptive responses to hypoxia.
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Affiliation(s)
- D R Premkumar
- Department of Physiology and Biophysics, Case Western Reserve University, Cleveland, Ohio 44106, USA
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Mishra RR, Adhikary G, Simonson MS, Cherniack NS, Prabhakar NR. Role of c-fos in hypoxia-induced AP-1 cis-element activity and tyrosine hydroxylase gene expression. Brain Res Mol Brain Res 1998; 59:74-83. [PMID: 9729288 DOI: 10.1016/s0169-328x(98)00139-9] [Citation(s) in RCA: 48] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
Previous studies have demonstrated that hypoxia stimulates expression of the c-fos gene in intact animals and isolated cells. The purpose of the present study was to assess the functional significance of c-fos activation during hypoxia. Using antisense c-fos strategy, we tested the hypothesis that c-fos is essential for activation of activator protein-1 transcription factor complex (AP-1) and subsequent stimulation of down stream genes such as tyrosine hydroxylase (TH) gene during hypoxia. Experiments were performed on rat pheochromocytoma 12 (PC12) cells. AP-1 activity was determined by a reporter gene assay using a luciferase expression vector driven by two copies of an AP-1 cis-element (AP-1-Luc). Cells transfected with AP-1-Luc construct were exposed to normoxia (21% O2) or to varying intensities and/or durations of hypoxia. AP-1 activity increased in response to hypoxia. The magnitude of the response depended on the intensity and duration of the hypoxic stimulus. Increases in AP-1 activity could not be elicited in neuroblastoma cells, indicating that hypoxia-induced increase in AP-1 activity is a cell selective phenomenon. Antisense c-fos abolished hypoxia-induced AP-1 activation in PC12 cells. Hypoxia increased tyrosine hydroxylase-chloramphenicol acetyl transferase activity (TH-CAT), and antisense c-fos and mutations at AP-1 binding sites in TH promoter abolished this effect. These results provide direct evidence that c-fos is essential for functional activation of AP-1 and subsequent activation of delayed response genes such as TH in PC12 cells.
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Affiliation(s)
- R R Mishra
- Department of Physiology and Biophysics, School of Medicine, Case Western Reserve University, 10900 Euclid Avenue, Cleveland, OH 44106, USA
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Gill TS, Sharma S, Mishra RR, Lahiri TK. Syndrome of primary ciliary dyskinesia: Kartagener's syndrome with empyema thoracis and azoospermia. Indian J Chest Dis Allied Sci 1996; 38:201-4. [PMID: 8987295] [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: 02/03/2023]
Abstract
Primary ciliary dyskinesia is a genetically determined disorder with several pulmonary complications. A case of an 18-year-old male suffering from this entity and having empyema thoracis and azoospermia is presented here.
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Affiliation(s)
- T S Gill
- Department of Surgery, Banaras Hindu University, Varanasi
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Mishra RR. Effect of certain chemical fertilizers on the rhizosphrere mycoflora of Oryza sativa Linn. II. Potassium fertilizer (potassium sulphate). Mycopathol Mycol Appl 1971; 45:119-24. [PMID: 5129428 DOI: 10.1007/bf02059253] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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Srivastava VB, Mishra RR. Investigations into rhizosphere microflora. I. Succession of microflora on root regions of Oryza sativa L. Microbiol Esp 1971; 24:193-205. [PMID: 5159954] [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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Mishra RR. Effect of certain chemical fertilizers on the rhizosphere myco-flora of Oryza sativa. I. Nitrogenous fertilizers: ammonium nitrate and urea. Mycopathol Mycol Appl 1971; 44:167-76. [PMID: 5575838 DOI: 10.1007/bf02051885] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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Srivastava VB, Mishra RR. Investigations into rhizosphere microflora. 3. Influence of sampling time. Microbiol Esp 1971; 24:115-21. [PMID: 5135046] [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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Mishra RR, Srivastava VB. Rhizosphere fungal flora of certain legumes. Ann Inst Pasteur (Paris) 1969; 117:717-23. [PMID: 5366479] [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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Mishra RR. Effect of UV-radiation on rhizosphere fungi of healthy and virus-infected plants of chenopodium amaranticolor Coste and Reyn. Experientia 1969; 25:657. [PMID: 5816456 DOI: 10.1007/bf01896578] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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