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Das D, Raha FK, Adnan KM, Siraj MR, Shapla MJ, Shumy F, Haque ME, Khan MH, Sanyal S, Hosen MI, Nabi AHMN, Sanyal M, Chakraborty S, Amin MZ. Dynamic antibody response in SARS-CoV-2 infected patients and COVID-19 vaccine recipients alongside vaccine effectiveness in comorbid and multimorbid groups. Heliyon 2023; 9:e16349. [PMID: 37251854 PMCID: PMC10199753 DOI: 10.1016/j.heliyon.2023.e16349] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2022] [Revised: 04/05/2023] [Accepted: 05/12/2023] [Indexed: 05/31/2023] Open
Abstract
Objectives Underlying medical conditions are critical risk factors for COVID-19 susceptibility and its rapid clinical manifestation. Therefore, the preexisting burden of non-communicable diseases (NCDs) makes the preparedness for COVID-19 more challenging for low- and middle-income countries (LMICs). These countries have relied on vaccination campaigns as an effective measure to tackle COVID-19. In this study, we investigated the impact of comorbidities on humoral antibody responses against the specific receptor-binding domain (RBD) of SARS-CoV2. Methods A total of 1005 patients were selected for the SARS-CoV-2 specific immunoglobulin G (IgG1, IgG2, IgG3, and IgG4 subclasses) and total antibody (TAb) tests (IgG and IgM), of which 912 serum samples were ultimately selected based on the specimen cutoff analyte value. Patients with multimorbidity (N = 60) were recruited for follow-up studies from the initial cohort, and their immune response (IgG and TAb) was measured at multiple time points after the second dose of vaccination. Siemens Dimension Vista SARS-CoV-2 IgG (CV2G) and SARS-CoV-2 TAb assay (CV2T) were used to carry out the serology test. Results Out of a total of 912 participants, vaccinated individuals (N = 711) had detectable antibody responses up to 7-8 months. The synergistic effect of natural infection and vaccine response was also studied. Participants with breakthrough infections (N = 49) mounted a greater antibody response compared to individuals with normal vaccination response (N = 397) and those who were naturally infected before receiving the second dose of vaccine (N = 132). Investigation of the impact of comorbidities revealed that diabetes mellitus (DM) (N = 117) and kidney disease (N = 50) had a significant negative impact on the decline of the humoral antibody response against SARS-CoV-2. IgG and TAb declined more rapidly in diabetic and kidney disease patients compared to the other four comorbid groups. Follow-up studies demonstrated that antibody response rapidly declined within 4 months after receiving the second dose. Conclusion The generalized immunization schedule for COVID-19 needs to be adjusted for high-risk comorbid groups, and a booster dose must be administered early within 4 months after receiving the second dose.
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Affiliation(s)
- Depro Das
- Systems Cell-Signalling Laboratory, Department of Biochemistry and Molecular Biology, University of Dhaka, Dhaka 1000, Bangladesh
| | - Fahmida Khanam Raha
- Systems Cell-Signalling Laboratory, Department of Biochemistry and Molecular Biology, University of Dhaka, Dhaka 1000, Bangladesh
| | | | | | | | | | | | | | | | - Md Ismail Hosen
- Clinical Biochemistry and Translational Medicine Laboratory, Department of Biochemistry and Molecular Biology, University of Dhaka, Dhaka 1000, Bangladesh
| | - AHM Nurun Nabi
- Laboratory of Population Genetics, Department of Biochemistry and Molecular Biology, University of Dhaka, Dhaka 1000, Bangladesh
| | | | - Sajib Chakraborty
- Systems Cell-Signalling Laboratory, Department of Biochemistry and Molecular Biology, University of Dhaka, Dhaka 1000, Bangladesh
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Saba AA, Sayem M, Rimon RA, Sanyal M, Chakraborty S, Rahman MA, Rahman MM, Nabi AHMN. Evaluating the seroprevalence of SARS-CoV-2 IgG in five different districts of Bangladesh. A seroepidemiological study. J Infect Public Health 2023; 16:964-973. [PMID: 37119719 PMCID: PMC10110279 DOI: 10.1016/j.jiph.2023.04.013] [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: 12/01/2022] [Revised: 03/25/2023] [Accepted: 04/12/2023] [Indexed: 05/01/2023] Open
Abstract
BACKGROUND We aimed to measure the seroprevalences and levels of anti-SARS-CoV-2 IgG in children, unvaccinated and vaccinated adults in five districts of Bangladesh and thus, investigate the association of seroprevalence and anti-SARS-CoV-2 IgG level with respect to different attributes of study participants. METHODS In the present study, the seroprevalences and levels of plasma anti-SARS-CoV-2 IgG were measured in children (n = 202), unvaccinated adults (n = 112), and vaccinated adults (n = 439) using quantitative ELISA. RESULTS The overall seroprevalence in the three groups of the study participants were 58.3% (90%CrI: 52.3-64.2%), 62.2% (90%CrI: 54.4-70.0%) and 90.7% (90%CrI: 88.3-92.9%), respectively. Multivariate logistic and linear regression revealed no significant association of seropositivity and levels of anti-SARS-CoV-2 IgG with the baseline characteristics of the children. AB blood group (vs A; aOR=0.21, 95% CI: 0.04-0.92, p = 0.04), O blood group (vs A; aOR=0.09, 95% CI: 0.02-0.32, p = 0.0004), BMI (aOR=1.61, 95% CI: 1.14-2.37, p = 0.01) and overweight obesity status (vs normal, aOR=0.12, 95% CI: 0.02-0.76, p = 0.03) were significantly associated with seropositivity in unvaccinated adults after adjusting for confounders. Age (p = 0.002) was significantly associated with anti-SARS-CoV-2 level in vaccinated adults after adjusting for confounders. Most of the children and unvaccinated adults belonged to the lower antibody response class which implicates the necessity of vaccination. CONCLUSION This study portrays a better way of evaluating transmission of virus and gain a better understanding of the true extent of infection as illustrated by the high rates of seroprevalences in children and unvaccinated adults. The findings of this study depicted from the antibody response also suggest the importance of vaccination.
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Affiliation(s)
- Abdullah Al Saba
- Laboratory of Population Genetics, Department of Biochemistry and Molecular Biology, University of Dhaka, Dhaka 1000, Bangladesh
| | - Mohammad Sayem
- Laboratory of Population Genetics, Department of Biochemistry and Molecular Biology, University of Dhaka, Dhaka 1000, Bangladesh
| | - Razoan Al Rimon
- Laboratory of Population Genetics, Department of Biochemistry and Molecular Biology, University of Dhaka, Dhaka 1000, Bangladesh
| | - Mousumi Sanyal
- Department of Medicine, Dhaka Medical College, Dhaka, Bangladesh
| | - Sajib Chakraborty
- Translational Systems Biology Laboratory, Department of Biochemistry and Molecular Biology, University of Dhaka, Dhaka 1000, Bangladesh
| | - Md Arifur Rahman
- Laboratory of Population Genetics, Department of Biochemistry and Molecular Biology, University of Dhaka, Dhaka 1000, Bangladesh
| | - Md Mizanur Rahman
- Department of Microbiology, Rajshahi Medical College, Rajshahi, Bangladesh
| | - A H M Nurun Nabi
- Laboratory of Population Genetics, Department of Biochemistry and Molecular Biology, University of Dhaka, Dhaka 1000, Bangladesh.
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Al Rimon R, Sayem M, Alam S, Al Saba A, Sanyal M, Amin MR, Kabir A, Chakraborty S, Nabi AHMN. The polymorphic landscape analysis of GATA1 exons uncovered the genetic variants associated with higher thrombocytopenia in dengue patients. PLoS Negl Trop Dis 2022; 16:e0010537. [PMID: 35771876 PMCID: PMC9278737 DOI: 10.1371/journal.pntd.0010537] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2021] [Revised: 07/13/2022] [Accepted: 05/26/2022] [Indexed: 12/01/2022] Open
Abstract
The current study elucidated an association between gene variants and thrombocytopenia through the investigation of the exonic polymorphic landscape of hematopoietic transcription factor—GATA1 gene in dengue patients. A total of 115 unrelated dengue patients with dengue fever (DF) (N = 91) and dengue hemorrhagic fever (DHF) (N = 24) were included in the study. All dengue patients were confirmed through detection of NS1 antigen, IgM, and IgG antibodies against the dengue virus. Polymerase chain reaction using specific primers amplified the exonic regions of GATA1 while Sanger sequencing and chromatogram analyses facilitated the identification of variants. Variants G>A (at chX: 48792009) and C>A (at chX: 4879118) had higher frequency out of 13 variants identified (3 annotated and 10 newly recognized). Patients carrying either nonsynonymous or synonymous variants had significantly lower mean values of platelets compared to those harboring the reference nucleotides (NC_000023.11). Further analyses revealed that the change in amino acid residue leads to the altered three-dimensional structure followed by interaction with neighboring residues. Increased stability of the protein due to substitution of serine by asparagine (S129N at chX: 48792009) may cause increased rigidity followed by reduced structural flexibility which may ultimately disturb the dimerization (an important prerequisite for GATA1 to perform its biological activity) process of the GATA1 protein. This, in turn, may affect the function of GATA1 followed by impaired production of mature platelets which may be reflected by the lower platelet counts in individuals with such variation. In summary, we have identified new variants within the GATA1 gene which were found to be clinically relevant to the outcome of dengue patients and thus, have the potential as candidate biomarkers for the determination of severity and prognosis of thrombocytopenia caused by dengue virus. However, further validation of this study in a large number of dengue patients is warranted. Trial Registration: number SLCTR/2019/037. Dengue, a mosquito-borne viral disease, caused by dengue virus (DENV) of the Flaviviridae family has been the source of a global epidemic for decades, and it has recently spread to all parts of the globe. Hemorrhagic manifestations in dengue are caused by increased vascular permeability and thrombocytopenia (150K cells/L). GATA1 is considered to be the master transcription factor for regulating the differentiation and maturation of megakaryocytes (MKs). The exonic polymorphism landscape of hematopoietic transcription factor—GATA1 in dengue patients was investigated in our study to see if there is an association between genetic variations and thrombocytopenia. Out of the 13 variations identified, variants G>A (chX:48792009) and C>A (chX:4879118) had the highest frequencies. Patients harboring either nonsynonymous or synonymous variants had significantly lower mean platelet counts compared to those having wild-type nucleotides. We have identified new GATA1 gene variations that were proven to be clinically related to the outcome of dengue patients and hence holds the potential to be candidate biomarkers for determining the severity and prognosis of dengue thrombocytopenia. However, this study needs to be replicated in a large number of dengue patients.
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Affiliation(s)
- Razoan Al Rimon
- Laboratory of Population Genetics, Department of Biochemistry and Molecular Biology, University of Dhaka, Dhaka, Bangladesh
| | - Mohammad Sayem
- Laboratory of Population Genetics, Department of Biochemistry and Molecular Biology, University of Dhaka, Dhaka, Bangladesh
| | - Saruar Alam
- Translational Systems Biology Laboratory, Department of Biochemistry and Molecular Biology, University of Dhaka, Dhaka, Bangladesh
| | - Abdullah Al Saba
- Laboratory of Population Genetics, Department of Biochemistry and Molecular Biology, University of Dhaka, Dhaka, Bangladesh
| | - Mousumi Sanyal
- Department of Medicine, Dhaka Medical College, Dhaka, Bangladesh
| | - Md. Robed Amin
- Department of Medicine, Dhaka Medical College, Dhaka, Bangladesh
| | - Ahmedul Kabir
- Department of Medicine, Dhaka Medical College, Dhaka, Bangladesh
| | - Sajib Chakraborty
- Translational Systems Biology Laboratory, Department of Biochemistry and Molecular Biology, University of Dhaka, Dhaka, Bangladesh
| | - A. H. M. Nurun Nabi
- Laboratory of Population Genetics, Department of Biochemistry and Molecular Biology, University of Dhaka, Dhaka, Bangladesh
- * E-mail:
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Chakraborty S, Alam S, Sayem M, Sanyal M, Das T, Saha P, Sayem M, Byapari BK, Tabassum CT, Kabir A, Amin M, Nabi AN. Investigation of the efficacy and safety of eltrombopag to correct thrombocytopenia in moderate to severe dengue patients - a phase II randomized controlled clinical trial. EClinicalMedicine 2020; 29-30:100624. [PMID: 33294822 PMCID: PMC7691733 DOI: 10.1016/j.eclinm.2020.100624] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/12/2020] [Revised: 10/17/2020] [Accepted: 10/21/2020] [Indexed: 11/06/2022] Open
Abstract
BACKGROUND The dengue-infected patients with or without hemorrhagic manifestations, typically exhibit moderate to severe thrombocytopenia. A thrombopoietin receptor agonist - eltrombopag has been efficacious in correcting thrombocytopenia in patients with various pathological conditions including immune thrombocytopenia, chronic liver disease, and severe aplastic anemia. This study investigated the efficacy and safety of eltrombopag to correct dengue-mediated thrombocytopenia. METHODS In this open-label, randomized controlled phase-II trial, patients with dengue fever (DF) and dengue hemorrhagic fever (DHF) having platelet (PLT) count lower than 100 × 109/L without comorbidity, pregnancy, and liver abnormalities were enrolled in Dhaka Medical College Hospital, Better Life Hospital and AMZ hospital, Dhaka, Bangladesh. Between October 10, 2019, and December 30, 2019, 123 DF and DHF patients were assessed for eligibility to be enrolled in the trial. Fourteen patients were excluded as they failed to fulfill the inclusion criteria (N = 6) or refused to participate in the trial (N = 8). Finally, 109 patients were randomly assigned to either Group 1, (N = 36), Group 2 (N = 37), or Control-group (N = 36) in a 1:1:1 ratio. Two doses of eltrombopag - 25 mg/day and 50 mg/day were administered to Group-1 and Group-2 patients, respectively whereas the control-group patients received standard dengue treatment without eltrombopag. The management of all enrolled patients was according to WHO guidelines. The randomization procedure was performed by using a computerized system (STATA Inc.). CBC and immature platelet fraction (IPF) were monitored from Day-0 to Day-7. Absolute immature platelet count (A-IPC) was calculated from PLT count and IPF for each patient. Aspartate aminotransferase (AST) and alanine aminotransferase (ALT) levels were measured on Day-0 and Day-4 and an Ultrasonogram (USG) of the abdomen was performed on Day-4 and Day-7 for each patient. The efficacy of eltrombopag as the primary outcome of the trial was investigated by the proportion of patients with recovered platelet count receiving eltrombopag with corrected platelet count (platelet count above the lower normal limit: 150 × 109/L) on Day-7 of the enrollment as compared to the Control-group. As the secondary outcomes, the reduction of bleeding tendency in response to eltrombopag as well as the safety of eltrombopag in dengue patients were assessed. The safety was evaluated in case of adverse events, liver function enzymes AST/ALT levels and USG. This trial is registered with the international clinical trial registry, number SLCTR/2019/037. RESULTS A total of 101 patients including 77 DF and 24 DHF patients completed the trial as eight patients left the trial without completing the follow-up. Patients of the different groups were compared with respect to mean age (26±8, 30±10 and 30±9 years for, Group-1,-2 and Control-group, respectively) (p-value= 0.23) and basal PLT count (Group-1: 58±24 × 109; Group-2: 52±29 × 109 and control-group: 55±30 × 109) (p-value= 0.63). The mean PLT counts for Group-1 (332 × 109/L ± 92) and Group-2 (371 × 109/L ± 111) were significantly higher than control-group (194 × 109/L ± 96) on Day-7 (adjusted p-value= 1.15 × 10-06 for Group-1 vs. Control-group, and adjusted p-value= 1.82 × 10-08 for Group-2 vs. Control-group).). On Day-7, 91% of Group-1 (N = 30) and Group-2 (N = 32) patients who received eltrombopag achieved primary endpoint of PLT count above than lower normal limit (150 × 109/L) (Group-1: 91%, OR: 8.33, 95% CI: 2.11 to 32.80, p-value: 0.0024 and Group-2: 91%, OR: 8.89, 95% CI: 2.26 to 34.89, p-value: 0.0017) compared to 55% (N = 18) of control-group patients who did not receive eltrombopag. The bleeding manifestations for thirteen out of fourteen grade-II DHF patients were subsided within Day-7 who received eltrombopag, whereas four out of ten grade-II DHF patients with PLT counts lower than the lower normal limit in the control group showed intermittent bleeding symptoms throughout the trial period. Mean A-IPC but not IPF was significantly higher for eltrombopag-treated groups in comparison to the Control-group. The frequency of the most common adverse events (vomiting and diarrheal tendencies) was similar in the treated-and control-groups (N = 5, 15%, and N = 3, 9% for Group-1 and -2, respectively vs. N = 4, 12% in the Control-group). Ten (30%) patients of Group-1 and, fourteen (40%) patients of Group-2 showed increased AST (U/L) as opposed to nine patients (27%) in the Control-group. Increased ALT levels were observed for three (9%), nine (26%), and seven (21%) patients belonging to the Group-1, -2, and Control-group, respectively. PLT counts higher than the upper normal limit (450 × 109/L) on Day-7 were observed for seven patients who were administered the higher dose (50 mg/day) in contrast to the three patients receiving the lower dose (25 mg/day). USG reports did not show thrombosis events in any of the patients. INTERPRETATION The trial revealed that the administration of eltrombopag in a short regimen for three days was efficacious to restore the PLT count in DF and DHF patients. The higher number of A-IPCs in eltrombopag treated patients underscored the possible mode of action of eltrombopag through stimulating megakaryopoiesis in dengue patients. The trial hints toward the positive effect of eltrombopag in the cessation of bleeding manifestation. Administration of the lower dose (25 mg/day) of eltrombopag was shown to be safer and equally efficacious to the higher dose (50 mg/day) in treating dengue-infected patients.
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Affiliation(s)
- Sajib Chakraborty
- Translational Systems Biology Laboratory, Department of Biochemistry and Molecular Biology, University of Dhaka, Dhaka 1000, Bangladesh
| | - Saruar Alam
- Translational Systems Biology Laboratory, Department of Biochemistry and Molecular Biology, University of Dhaka, Dhaka 1000, Bangladesh
| | - Mohammad Sayem
- Laboratory of Population Genetics, Department of Biochemistry and Molecular Biology, University of Dhaka, Dhaka 1000, Bangladesh
| | - Mousumi Sanyal
- Department of Medicine, Dhaka Medical College, Dhaka, Bangladesh
| | - Tonmoy Das
- Translational Systems Biology Laboratory, Department of Biochemistry and Molecular Biology, University of Dhaka, Dhaka 1000, Bangladesh
| | - Piyal Saha
- Laboratory of Population Genetics, Department of Biochemistry and Molecular Biology, University of Dhaka, Dhaka 1000, Bangladesh
| | - Mohammad Sayem
- Department of Medicine, Aichi Medical College, Dhaka, Bangladesh
| | | | | | - Ahmedul Kabir
- Department of Medicine, Dhaka Medical College, Dhaka, Bangladesh
| | - Md.Robed Amin
- Department of Medicine, Dhaka Medical College, Dhaka, Bangladesh
| | - A.H.M. Nurun Nabi
- Laboratory of Population Genetics, Department of Biochemistry and Molecular Biology, University of Dhaka, Dhaka 1000, Bangladesh
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Yesmin S, Sanyal M, Hasan MJ. Breast Cancer with Paraneoplastic Syndrome in a 72 Year Old Male Patient. Mymensingh Med J 2019; 28:254-258. [PMID: 30755579] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Breast cancer in male is rare which accounts about 1% of all malignant breast neoplasm cases. Since paraneoplastic syndrome is unusual with male breast cancer, very few reported cases are found. A72- year-old gentleman presented with proximal myopathy in all four limbs was referred to Dr. Sirajul Islam Medical College and Hospital in April 2017. He had generalized wasting with reduced tone and reflexes. Planter responses were normal with intact sensory. There were typical Heliotrope rash bilaterally. In background, he had history of radical mastectomy due to stage IIA ductal carcinoma of left breast 7 years back. Three years later, he was found to have multiple metastases in lung and liver, however, deliberately discontinued chemotherapy after first dose. Currently he is on Tamoxifen. Two months back, he was diagnosed to have brain metastasis. Also his serum sodium level was low with low urine osmolality. Considering his background, we diagnosed him dermatomyositis with peripheal neuropathy & SIADH as paraneoplastic presentation of breast malignancy. Despite of normal CPK and NCV, we treated him with steroid as dermatomyositis can present with normal CPK. His myopathy improved after 2 weeks of steroid treatment. Fluid restriction increased his serum sodium level. The aim of reporting this case is to aware physicians about the aggressive nature of male breast cancer, its orthodox paraneoplastic presentation and to differentiate neuropathy from myopathy so that early treatment can improve the outcome.
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Affiliation(s)
- S Yesmin
- Dr Sabrina Yesmin, Associate Professor and Head, Department of Medicine, Dr Sirajul Islam Medical College Hospital, Dhaka, Bangladesh; E-mail:
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A. Shah P, V. Shah J, Sanyal M, S. Shrivastav P. Conductometry, spectrophotometry and mass spectrometric investigation of Mg(II) and Ca(II) complexes with an antiretroviral drug, zidovudine. B CHEM SOC ETHIOPIA 2018. [DOI: 10.4314/bcse.v31i3.6] [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: 11/17/2022] Open
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Patel DS, Sharma N, Patel MC, Patel BN, Shrivastav PS, Sanyal M. Development and validation of a rapid and sensitive LC-MS/MS method for the determination of aripiprazole in human plasma: Application to a bioequivalence study. ACTA CHROMATOGR 2014. [DOI: 10.1556/achrom.26.2014.2.2] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [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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Patel DS, Sharma N, Patel MC, Patel BN, Shrivastav PS, Sanyal M. Sensitive and Selective Determination of Diflunisal in Human Plasma by LC-MS. J Chromatogr Sci 2012; 51:872-82. [DOI: 10.1093/chromsci/bms181] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
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Yadav M, Singhal P, Goswami S, Pande UC, Sanyal M, Shrivastav PS. Selective Determination of Antiretroviral Agents Tenofovir, Emtricitabine, and Lamivudine in Human Plasma by a LC-MS-MS Method for a Bioequivalence Study in Healthy Indian Subjects. J Chromatogr Sci 2010; 48:704-13. [DOI: 10.1093/chromsci/48.9.704] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Schmidt-Hansberg B, Baunach M, Klein M, Sanyal M, Scharfer P, Schabel W. Kontrolle der Nanomorphologie in organischen Solarzellen. CHEM-ING-TECH 2010. [DOI: 10.1002/cite.201050053] [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: 11/11/2022]
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Raychaudhuri SP, Dutt S, Raychaudhuri SK, Sanyal M, Farber EM. Severe combined immunodeficiency mouse-human skin chimeras: a unique animal model for the study of psoriasis and cutaneous inflammation. Br J Dermatol 2001; 144:931-9. [PMID: 11359377 DOI: 10.1046/j.1365-2133.2001.04178.x] [Citation(s) in RCA: 39] [Impact Index Per Article: 1.7] [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: 11/20/2022]
Abstract
Elucidation of the molecular and cellular mechanisms responsible for the pathogenesis of psoriasis had been significantly handicapped due to lack of an ideal animal model. To overcome this hurdle several investigators have developed a number of animal models for psoriasis. Recent establishment of the SCID-human skin chimeras with transplanted psoriasis plaques has opened new vistas to study the molecular complexities involved in psoriasis. This model also offers a unique opportunity to investigate various key biological events such as cell proliferation, angiogenesis, homing in of T cells in target tissues, neurogenic inflammation and cytokine/chemokine cascades involved in an inflammatory reaction. The SCID mouse model will be of immense help to target the cellular and molecular events associated with these pathogenic processes and develop novel drugs for psoriasis and other inflammatory diseases. In this article we have reviewed the prospects and the limitations of the SCID mouse model of psoriasis.
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Affiliation(s)
- S P Raychaudhuri
- Psoriasis Research Institute, 600 Town & Country Village, Palo Alto, CA 94301, U.S.A.
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Sanyal M, Nag TC, Das C. Localization of nitric oxide synthase in human trophoblast cells: role of nitric oxide in trophoblast proliferation and differentiation. Am J Reprod Immunol 2000; 43:70-7. [PMID: 10735597 DOI: 10.1111/j.8755-8920.2000.430202.x] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.0] [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: 11/28/2022] Open
Abstract
PROBLEM There are conflicting reports about the isoform of nitric oxide synthase (NOS) present in trophoblast cells. In this study, we have examined the presence of different NOS isoforms in trophoblast cells. In addition, the role of nitric oxide (NO) in trophoblast function has also been studied by investigating the possible role of nitric oxide in trophoblast proliferation and differentiation. METHOD OF STUDY NOS isoforms in primary-term trophoblast and JEG-3 cells were identified by immunocytochemistry. The intracellular localization of this enzyme was determined by confocal laser scanning microscopy. Trophoblast proliferation was studied by 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyl tetrasolium bromide (MTT) conversion assay and cellular differentiation was monitored by human chorionic gonodotropin (hCG) and progesterone secretion, measured by radioimmunoassay. RESULTS The immunoreactive NOS was present in human trophoblast cells of normal term placenta and JEG-3 cells (a choriocarcinoma cell line) maintained in culture. Nicotinamide adenine dinucleotide phosphate (NADPH)-dependent diaphorase activity overlapped with the immunostaining of NOS. Specific antibodies against the different isoforms of NOS detected the presence of neuronal-type NOS (nNOS) only. The other two isoforms, i.e., eNOS (endothelial) and iNOS (macrophage specific) were completely absent. The nNOS was localized in cell cytoplasm. In culture, JEG-3 cells normally undergo proliferation and cytotrophoblast cells in primary culture differentiate to form hormone-secreting syncytial cells. Sodium nitroprusside (SNP), a nitric oxide donor, when added to the culture, significantly increased proliferation of JEG-3 cells and inhibited the differentiation of cytotrophoblast cells. The arrest by SNP in the formation of syncytial cells was further evidenced by the low secretion profile of hCG and progesterone. CONCLUSIONS Our findings suggest for the first time the presence of nNOS in the human trophoblast cells and a previously unrecognized role of NO in trophoblast proliferation and differentiation.
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Affiliation(s)
- M Sanyal
- Department of Biochemistry, All India Institute of Medical Sciences, New Delhi
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Sanyal M, Das C. Collagenase-IV in human trophoblast invasion and differentiation. Indian J Biochem Biophys 1997; 34:220-5. [PMID: 9343955] [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: 02/05/2023]
Abstract
Trophoblast cells are unique with respect to their functions and responsibilities. These cells demonstrate three sequential phenotypes, proliferation and invasion into the endometrium, differentiation to form syncytia and endocrine secretions. Equipped with these properties placental trophoblasts are endowed with a variety of functions, like implantation of the blastocyst to the endometrium, providing nutrition to the developing embryo and also transmitting extraordinary array of signals for the embryonic development. Experimental evidences and logical extrapolation suggest that these functions are precisely controlled by growth factors, cytokines and hormones produced either by the trophoblast themselves or by the utero-placental unit. Any error in this control mechanism has extremely adverse consequences. The cells also synthesize a large number of enzymes, amongst which collagenase type IV secretion is involved in digestion of underlying basement membrane necessary for the process of invasion. Our results implicate the enzyme in the functional differentiation of the trophoblast as well. Inhibitors to this enzyme inhibit trophoblast differentiation as monitored by secretion of hCG and progesterone, the two markers of trophoblastic differentiation. In contrast, BeWo cells, a choriocarcinoma cell line which does not differentiate spontaneously, undergo increased proliferation when challenged with EGF. The results indicate the possibility of invasive and differentiative phenotypes to be coupled. Exact molecular involvements in this coupling process are looked into.
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Affiliation(s)
- M Sanyal
- Department of Biochemistry, All India Institute of Medical Sciences, Ansari Nagar, New Delhi, India
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Abstract
A case of midfacial swelling in a middle aged woman proved to be caused by a fungus Conidiobolus coronatus has been reported. It is a very rare condition and the knowledge of this fungus affecting the rhinofacial region in human started since 1965 only. These cases pose diagnostic problem. The treatment with the combination of ketoconazole and the saturated solution of potassium iodide was effective for this fungal infection.
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Affiliation(s)
- D Mukhopadhyay
- Department of Otorhinolaryngology, Medical College & Hospitals, Calcutta, India
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15
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Feagans L, Sanyal M, Henderson F, Collier A, Appelbaum M. Relationship of middle ear disease in early childhood to later narrative and attention skills. J Pediatr Psychol 1987; 12:581-94. [PMID: 3430288 DOI: 10.1093/jpepsy/12.4.581] [Citation(s) in RCA: 67] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023] Open
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16
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Thammayya A, Sanyal M. Exophiala jeanselmei causing mycetoma pedis in India. Sabouraudia 1980; 18:91-5. [PMID: 7191580] [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
Exophiala jeanselmei causing mycetoma pedis in a 65-year-old Bengalee businessman was described. The right lower leg and foot were irregularly swollen, firm, painless, non-tender and had many small nodules and sinuses all over the swelling. The lower end of the tibia and bones of the foot were affected. The discharge from the sinuses and nodules contained black brown, soft, vermicular, crescent-shaped to irregular granules, measuring 0.5--2.00 mm and composed mostly of swollen spherical cells, 4-8 micrometer diameter, and a few hyphae, 2.5--3.0 micrometer diameter. The isolate was polymorphic in nature and exhibited various morphological features such as yeast-like cells producing secondary conidia, toruloid hyphae, and terminal and intercalary annellophores bearing annelloconidia at one or more points.
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17
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Thammayya A, Sanyal M, Basu N. Pyrenochaeta romeroi causing mycetoma pedis in India. J Indian Med Assoc 1979; 73:66-7. [PMID: 546999] [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: 12/23/2022]
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18
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Bhattacharyya SK, Thammayya A, Sanyal M, Saha KC. Topical treatment of fungous infection of the skin and nail with miconazole nitrate (Nufungex) cream. Indian J Dermatol 1979; 24:42-5. [PMID: 540976] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
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19
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Thammayya A, Sanyal M. Histoplasmosis with cutaneous nodules and oral granuloma caused by Histoplasma capsulatum in a Bengalee. Indian J Med Res 1979; 69:428-35. [PMID: 447380] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
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20
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Sanyal M, Thammayya A, Basu N. Actinomycetoma caused by organisms of the Nocardia asteroides complex and closely related strains. Mykosen 1978; 21:109-21. [PMID: 349376 DOI: 10.1111/j.1439-0507.1978.tb01624.x] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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21
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Sanyal M, Thammayya A, Khan KP, Mukherjee AM. Disseminated histoplasmosis. Report of a case. INDIAN J PATHOL MICR 1976; 19:179-84. [PMID: 992864] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
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22
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Thammayya A, Sanyal M. White piedra--mycotic infection of the hair. Indian J Med Res 1976; 64:554-6. [PMID: 987019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
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23
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Chowdhury NN, Sanyal M. Gynaecological problems in childhood and adolescence. J Indian Med Assoc 1975; 65:179-83. [PMID: 1214077] [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: 12/26/2022]
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24
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Sanyal M, Thammayya A. Histoplasma capsulatum in the soil of Gangetic Plain in India. Indian J Med Res 1975; 63:1020-8. [PMID: 1213788] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
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25
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Thammayya A, Sanyal M. Trichophyton simii infection in man in Calcutta. Indian J Dermatol 1975; 20:55-8. [PMID: 1234869] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
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26
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Sanyal M. Spectrophotometric Estimation of Amylopectin by Double-Wavelength Method. STARCH-STARKE 1975. [DOI: 10.1002/star.19750270805] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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27
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Sanyal M, Thammayya A. Tinea barbae in India. Indian J Dermatol 1974; 19:77-82. [PMID: 4430500] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023] Open
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28
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Thammayya A, Sanyal M. Monosporium apiospermum causing mycetoma pedis in India. Indian J Med Res 1973; 61:1289-91. [PMID: 4798400] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023] Open
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29
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30
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Thammayya A, Sanyal M. Chrysosporium parvum from eczematous lesions in man. Bull Calcutta Sch Trop Med 1973; 21:23-4. [PMID: 4807409] [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: 01/12/2023]
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31
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Thammayya A, Sanyal M, Basu N. Properties of Actinomadura madurae isolated from actinomycetoma with a note on taxonomy. Bull Calcutta Sch Trop Med 1973; 21:10-1. [PMID: 4807201] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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32
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Thammayya A, Basu N, Sanyal M. Pathogenic Nocardia and the related actinomycetes isolated by paraffin baiting. Bull Calcutta Sch Trop Med 1972; 20:41-3. [PMID: 4680055] [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: 01/11/2023]
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33
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Thammayya A, Sanyal M, Basu N. Studies on Gymnoscaceae. II. Pseudocleistothecia in the primary cultures of Trichophyton mentagrophytes causing dermatophytosis. Bull Calcutta Sch Trop Med 1972; 20:24-5. [PMID: 4666674] [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: 01/11/2023]
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34
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Thammayya A, Basu N, Sur-Roy-Chowdhury D, Banerjee AK, Sanyal M. Actinomycetoma pedis caused by Nocardia caviae in India. Sabouraudia 1972; 10:19-23. [PMID: 4553712] [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: 01/11/2023]
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35
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Sanyal M, Thammayya A. Aerial mycoflora of Calcutta. Bull Calcutta Sch Trop Med 1972; 20:5-7. [PMID: 4657472] [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: 01/11/2023]
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36
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Banerjee AK, Thammayya A, Basu N, Chowdhury DS, Sanyal M. Localised histoplasmosis treated with amphotericin. Bull Calcutta Sch Trop Med 1971; 19:91-3. [PMID: 4144384] [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: 01/09/2023]
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37
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Sanyal M, Thammayya A, Basu N. Studies on Gymnoascaceae. I. Arachniotus flavoluteus in cases of dermatophytoses. Bull Calcutta Sch Trop Med 1971; 19:86-7. [PMID: 5161535] [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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38
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Basu N, Sanyal M, Thammayya A, Roy RN. Cryptococcal meningitis in a case of reticulum cell sarcoma. Bull Calcutta Sch Trop Med 1971; 19:59-61. [PMID: 4949798] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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39
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Banerjee AK, Basu N, Roychoudhury DS, Thammayya A, Sanyal M. Sporotrichosis. Bull Calcutta Sch Trop Med 1971; 19:56-7. [PMID: 5161346] [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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40
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Mukherjee AM, Khan KP, Sanyal M, Basu N. Histoplasmosis in India with report of two cases. J Indian Med Assoc 1971; 56:121-5. [PMID: 5121871] [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: 01/13/2023]
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41
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Sanyal M, Basu N, Thammayya A. Trichophyton rubrum as the cause of kerion. Bull Calcutta Sch Trop Med 1970; 18:45-6. [PMID: 5517778] [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: 01/15/2023]
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42
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Thammayya A, Basu N, Sanyal M. Mycetoma due to Madurella grisea. Bull Calcutta Sch Trop Med 1970; 18:4-5. [PMID: 5534799] [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: 01/15/2023]
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43
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Sanyal M. Dermatophytoses in India. Bull Calcutta Sch Trop Med 1969; 17:54-9. [PMID: 5401891] [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: 01/15/2023]
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44
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Thammayya A, Sanyal M, Basu N. The relative importance of urease test and hair-perforation test in routine differentiation to Trichophyton rubrum and T. mentagrophyte. Bull Calcutta Sch Trop Med 1968; 16:43-5. [PMID: 5713702] [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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45
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Sanyal M, Basu N. A new mycological culture medium. Bull Calcutta Sch Trop Med 1968; 16:15-6. [PMID: 5713688] [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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46
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Thammayya A, Sanyal M, Basu N. Trichophyton terrestre in India. Bull Calcutta Sch Trop Med 1967; 15:104-6. [PMID: 5616300] [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: 01/15/2023]
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47
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Sanyal M. Systemic mycoses in India. Bull Calcutta Sch Trop Med 1966; 14:135-136. [PMID: 6003415] [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: 05/21/2023]
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48
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Thammayya A, Sanyal M. Some additions to the knowledge of dermatophytes and the related keratinophilic fungal flora of Indian soils. Bull Calcutta Sch Trop Med 1966; 14:52-3. [PMID: 6006602] [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: 01/17/2023]
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