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Singh I, Hoti SL, Chauhan N, Joshi RK, Prasad TSK, Sarikhani M, Kaushik M, Unger BS, Jadhav P, Modi PK. Immunomodulation of streptozotocin induced Type 1 diabetes mellitus in mouse model by Macrophage migration inhibitory factor-2 (MIF-2) homologue of human lymphatic filarial parasite, Wuchereria bancrofti. Acta Trop 2024; 252:107142. [PMID: 38331083 DOI: 10.1016/j.actatropica.2024.107142] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2023] [Revised: 02/05/2024] [Accepted: 02/05/2024] [Indexed: 02/10/2024]
Abstract
Helminth parasites modulate the host immune system to ensure a long-lasting asymptomatic form of infection generally, mediated by the secretion of immunomodulatory molecules and one such molecule is a homologue of human host cytokine, Macrophage migratory Inhibitory Factor (hMIF). In this study, we sought to understand the role of homologue of hMIF from the lymphatic filarial parasite, Wuchereria bancrofti (Wba-MIF2), in the immunomodulation of the Streptozotocin (STZ)-induced Type1 Diabetes Mellitus (T1DM) animal model. Full-length recombinant Wba-MIF2 was expressed and found to have both oxidoreductase and tautomerase activities. Wba-MIF2 recombinant protein was treated to STZ induced T1DM animals, and after 5 weeks pro-inflammatory (IL-1, IL-2, IL-6, TNF-α, IFN-γ) and anti-inflammatory (IL-4, IL-10) cytokines and gene expressions were determined in sera samples and spleen respectively. Pro-inflammatory and anti-inflammatory cytokine levels were significantly (p<0.05) up-regulated and down-regulated respectively, in the STZ-T1DM animals, as compared to treated groups. Histopathology showed macrophage infiltration and greater damage of islets of beta cells in the pancreatic tissue of STZ-T1DM animals, than Wba-MIF2 treated STZ-T1DM animals. The present study clearly showed the potential of Wba-MIF2 as an immunomodulatory molecule, which could modulate the host immune system in the STZ-T1DM mice model from a pro-inflammatory to anti-inflammatory milieu.
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Affiliation(s)
- Ishwar Singh
- ICMR-National Institute of Traditional Medicine, Belagavi 590010, India Karnataka, India; KLE Academy of Higher Education and Research, Belagavi 590010, India Karnataka, India
| | - S L Hoti
- ICMR-National Institute of Traditional Medicine, Belagavi 590010, India Karnataka, India.
| | - Nikhil Chauhan
- ICMR-National Institute of Traditional Medicine, Belagavi 590010, India Karnataka, India
| | - R K Joshi
- ICMR-National Institute of Traditional Medicine, Belagavi 590010, India Karnataka, India
| | - T S Keshava Prasad
- Center for Systems Biology and Molecular Medicine, Yenepoya Research Centre, Yenepoya (Deemed to be University), Mangalore 575007, Karnataka, India
| | | | - Meenakshi Kaushik
- ICMR-National Institute of Traditional Medicine, Belagavi 590010, India Karnataka, India
| | - Banappa S Unger
- ICMR-National Institute of Traditional Medicine, Belagavi 590010, India Karnataka, India
| | - Pankaj Jadhav
- Indian Institute of Science, Bangalore 560012, Karnataka, India
| | - Prashant Kumar Modi
- Center for Systems Biology and Molecular Medicine, Yenepoya Research Centre, Yenepoya (Deemed to be University), Mangalore 575007, Karnataka, India
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Baveja S, Vashisht D, Kothari R, Venugopal R, Kumar Joshi R. Comparative evaluation of the efficacy of itraconazole with terbinafine cream versus itraconazole with sertaconazole cream in dermatophytosis: A within person pilot study. Med J Armed Forces India 2023; 79:526-530. [PMID: 37719899 PMCID: PMC10499633 DOI: 10.1016/j.mjafi.2021.07.001] [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: 04/08/2021] [Accepted: 07/01/2021] [Indexed: 11/16/2022] Open
Abstract
Background Current trend of rising drug-resistant dermatophyte infection is alarming and fretted by dermatologists. Dilemma prevails regarding use of the same or different class of antifungal agents topically and systemically. The aim was to study the efficacy of oral itraconazole 200 mg with 1% terbinafine cream versus oral itraconazole 200 mg with 2% sertaconazole cream in dermatophytosis. Methods This within-person open-label pilot study enrolled 50 patients with dermatophytosis. Two lesions of comparable size within each patient were randomly allotted to group A and B and treated with 2% sertaconazole and 1% terbinafine cream, respectively. Both groups received itraconazole 200 mg once daily for 4 weeks. The remaining lesions received 1% terbinafine cream. Response and adverse effects were assessed at 2 and 4 weeks. Reduction in erythema, scaling, pruritus and clinical, and mycological cure constituted efficacy outcomes. Results The mean duration of lesions was 2.82 ± 1.35 months. Complete clinical cure was observed in 50% and 48%, whereas mycological cure was attained in 56% and 52% patients in groups A and B, respectively, after 4 weeks, which was statistically insignificant. Reduction in erythema, scaling, and pruritus after 4 weeks when compared between the two groups, was also statistically insignificant. Conclusion Same class of oral and topical antifungal agents has comparable efficacy with different classes of oral and topical antifungal agents in dermatophyte infection.
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Affiliation(s)
- Sukriti Baveja
- Deputy Commandant, OTC, AMC (Centre & College), Lucknow, India
| | - Deepak Vashisht
- Professor (Dermatology), Command Hospital, (Southern Command), Pune, India
| | - Rohit Kothari
- Resident, Department of Dermatology, Armed Forces Medical College, Pune, India
| | - Ruby Venugopal
- Assistant Professor (Dermatology), Command Hospital (Southern Command), Pune, India
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Bhaskarwar AP, Dev Jaidev KP, Joshi RK, Mopagar V. Managing acute acromioclavicular joint dislocation during COVID 19 pandemic by minimally invasive technique with suture anchor and miniplate: A pilot study. Med J Armed Forces India 2022; 79:S0377-1237(22)00099-5. [PMID: 35996616 PMCID: PMC9385407 DOI: 10.1016/j.mjafi.2022.06.016] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2021] [Accepted: 06/20/2022] [Indexed: 11/30/2022] Open
Abstract
Background Acromioclavicular (AC) joint dislocation is common in sportsmen and physically active population. Its management depends upon the grade of injury and functional demands of the patient. A variety of surgical procedures have been described with different limitations and advantages. The present study has assessed the clinical and radiological outcome of acute AC joint dislocation managed with a 3.5 mm Titanium suture anchor and 2 mm miniplate construct which requires lesser dissection, surgical time and thus contact with the patient as mandated by COVID-19 pandemic. Methods We enrolled 10 patients of Rockwood type-III, IV and V acute AC joint injury (<3 weeks old) reporting at this hospital from Feb 2020 to May 2021. All were tested for COVID-19 using reverse transcriptase polymer chain reaction test (RTPCR) and managed by closed/open reduction and fixation with a 3.5 mm Titanium Suture Anchor and a 2 mm Titanium miniplate construct. Follow-up was done at 3, 6 and 9 month post-operatively. Results The average age of patients was 31 yrs. RTPCR test for COVID-19 was negative in all patients. Median surgical time was 25 min (Interquartile Range[IQR] = 16-34 min) and median follow-up duration was 36 weeks (IQR = 33-39 weeks). Median visual analogue scale score and IQR at pre-operative, 3 month, 6 month and 9 month follow-up was 7(IQR = 6-8), 3.5(IQR = 2.5-4.5), 2(IQR = 0) and 1(IQR = 0), respectively. Median constant score at pre-operative, 3 month, 6 month and 9 month follow-up were 34(IQR = 25-43), 65.5(IQR = 60.5-70.5), 82.5(IQR = 77.5-87.5) and 88(IQR = 81-95). There was significant improvement in clinical status (non parametric-Friedman test p < 0.001). Radiographs showed no loss of reduction, fracture or implant failure till last follow-up. Conclusions Minimally invasive technique with a 3.5 mm Ti-suture anchor and 2 mm plate is an easy, fast and reliable construct for the management of acute AC dislocation in physically active population.
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Kushwaha N, Kumar S, Sheikh MA, Philip J, Sharma S, Biswas AK, Joshi RK. Association of CD 34 positive cell dose with engraftment kinetics in autologous peripheral blood stem cell transplant patients of multiple myeloma. Med J Armed Forces India 2022; 78:296-301. [DOI: 10.1016/j.mjafi.2021.01.015] [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] [Received: 05/16/2020] [Accepted: 01/17/2021] [Indexed: 11/28/2022] Open
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Mukherjee R, Joshi RK. Controlling Behavior and Intimate Partner Violence: A Cross-Sectional Study in an Urban Area of Delhi, India. J Interpers Violence 2021; 36:NP10831-NP10842. [PMID: 31561731 DOI: 10.1177/0886260519876720] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Intimate partner violence (IPV) is a widespread issue faced by women across the world. While prevalence and epidemiology of IPV has been studied extensively, its association with controlling behavior has been largely ignored. We carried out this study to assess the prevalence of IPV against married women and its association with sociodemographic factors, justification of violence, and controlling behavior by their spouses in Delhi, India. Five hundred women residing in an urban residential area of Delhi, India, responded to a validated questionnaire asking about IPV and controlling behaviors by their husbands. In our study, 30.6% of women had "ever" experienced IPV, and 43.2% women stated that they had experienced controlling behavior by their husbands. Alcohol consumption by the husband, women's justification of their partner's violence, and controlling behavior by the husbands were significantly associated with the experience of IPV among study participants. Women with a lower education status, not financially employed, those who justified violence or faced any form of violence in their marital life were at higher risk of experiencing controlling behavior from their spouses.
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Tilak R, Kunwar R, Tyagi PK, Khera A, Joshi RK, Wankhade UB. Zoonotic surveillance for rickettsiae in rodents and mapping of vectors of rickettsial diseases in India: A multi-centric study. Indian J Public Health 2019; 61:174-181. [PMID: 28928300 DOI: 10.4103/ijph.ijph_156_17] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Abstract
BACKGROUND The global resurgence of rickettsial diseases and their potential to impact the fitness of military personnel and inflict widespread casualties amongst civil populations has emerged as a major cause of public health concern. Absence of surveillance system, lack of awareness amongst medical fraternity to rickettsial activity along with the difficulty in diagnosis because of their protean clinical manifestations are reasons for the outbreaks of these diseases. OBJECTIVES To determine rickettsial activity amongst rodents and study vector diversity, abundance and their distribution to enable mapping of rickettsial hotspots. METHODS Zoonotic surveillance was undertaken in six selected study areas in India - Jammu, Akhnoor, Rajouri-Poonch, Udhampur-Nagrota, Dehradun and Pune. Weil-Felix test was used for rickettsial sero-surveillance amongst rodents and standard identification keys were used for mapping vector diversity and database preparation. RESULTS Serological findings revealed positivity to all the three rickettsial antigens (OXK, OX19 and OX2) in Jammu, OX19 in Dehradun and OXK and OX2 positivity in Udhampur-Nagrota belt. The vector database records presence of 16 species of trombiculid mites from three important genera - Leptotrombidium, Schoengastiella and Gahrliepia with ticks from five genera and 8 species of fleas from four genera. Mite fauna of study sites has been enriched with addition of new records of mite species (five mite species at Pune, two at Akhnoor with one mite species each at Jammu and Dehradun). CONCLUSION The study reveals rickettsial activity amongst rodents at Jammu, Dehradun and Udhampur-Nagrota belt. The results correlate well with the presence of vectors of scrub and tick typhus and corroborate the occurrence of outbreaks of these diseases in the respective areas.
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Affiliation(s)
- Rina Tilak
- Scientist "G", Department of Community Medicine, Armed Forces Medical College, Pune, Maharashtra, India
| | | | - P K Tyagi
- Public Health Specialist, AFMS, Pune, Maharashtra, India
| | - Anurag Khera
- Reader, Department of Community Medicine, Armed Forces Medical College, Pune, Maharashtra, India
| | - R K Joshi
- Reader, Department of Community Medicine, Armed Forces Medical College, Pune, Maharashtra, India
| | - Urmila B Wankhade
- Junior Scientific Assistant, Department of Community Medicine, Armed Forces Medical College, Pune, Maharashtra, India
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Abstract
Introduction Factors associated with persistently high Human Immunodeficiency Virus (HIV) prevalence levels in several districts of India are not well understood. This study was undertaken to determine the association of socio-demographic characteristics, economic factors, awareness about HIV and Sexually Transmitted Infections (STIs), and condom use with consistently high HIV prevalence in the Indian districts and to ascertain whether these associations differed across various regions of India. Methods This study was carried out including all 640 districts of India. Secondary analysis of data obtained from the Census of India-2011, HIV Sentinel Surveillance in India and District Level Household Survey-III was done. Population profile, socio-economic characteristics, levels of HIV/STI/condom awareness and condom use, were compared between the districts with and without consistently high HIV prevalence. Due to the presence of collinearity among predictor variables, we used principal component analysis and the principal component scores were included as covariates for further analysis. Considering the districts at level 1 and the regions at level 2, multi-level analysis was done by generalised linear mixed models. Variance partition coefficient and median odds ratio were also calculated. Results Sixty-three districts with consistently high HIV prevalence were found clustered in the South and the North-east regions of India. Population size, density and urbanisation were found to be positively associated with consistently high HIV prevalence in these districts. Higher levels of literacy, better socio-economic status, higher proportion of population in reproductive age group and late marriages were positively associated with consistently high HIV prevalence in all regions of India except in the Southern region. Higher levels of knowledge about the role of condoms in HIV prevention and condom use were associated with low HIV prevalence at the district level. Conclusions Considerable heterogeneity among factors associated with consistently high HIV prevalence at the district level in different regions of India necessitates special region-specific strategies for HIV control. Increasing awareness about HIV alone is not sufficient for controlling the HIV epidemic and there is a need to raise knowledge levels about preventive measures against HIV and promote the use of condoms amongst population.
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Affiliation(s)
- Rajneesh Kumar Joshi
- Symbiosis International University, Pune, India
- National AIDS Research Institute (ICMR), Pune, India
- * E-mail:
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Wolff A, Joshi RK, Ekström J, Aframian D, Pedersen AML, Proctor G, Narayana N, Villa A, Sia YW, Aliko A, McGowan R, Kerr R, Jensen SB, Vissink A, Dawes C. [Medicaments and oral healthcare. Systematic review of the -literature assessing the effect of drugs on the salivary glands]. Ned Tijdschr Tandheelkd 2018; 125:593-601. [PMID: 30457580 DOI: 10.5177/ntvt.2018.11.18203] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Evidence-based reviews of drugs causing medication-induced salivary gland dysfunction, such as xerostomia (sensation of oral dryness) and subjective sialorrhea are lacking. To compile a list of medicaments that influence salivary gland function, electronic databases were searched for relevant articles published up to June 2013. A total of 269 papers out of 3,867 records located satisfied the inclusion criteria (relevance, quality of methodology, strength of evidence). A total of 56 active substances with a higher level of evidence and 50 active substances with a moderate level of evidence of causing salivary gland dysfunction are described in this article. While xerostomia was a commonly reported outcome, the objective effect on salivary secretion was rarely measured. Xerostomia was, moreover, mostly reported as a negative side effect instead of the intended effect of that drug. A comprehensive list of medications having documented effects on salivary gland function or symptoms was compiled, which may assist practitioners in assessing patients who complain of dry mouth while taking medications.
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Lian B, De Luca S, You Y, Alwarappan S, Yoshimura M, Sahajwalla V, Smith SC, Leslie G, Joshi RK. Extraordinary water adsorption characteristics of graphene oxide. Chem Sci 2018; 9:5106-5111. [PMID: 29938042 PMCID: PMC5994872 DOI: 10.1039/c8sc00545a] [Citation(s) in RCA: 46] [Impact Index Per Article: 7.7] [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: 02/02/2018] [Accepted: 05/16/2018] [Indexed: 11/21/2022] Open
Abstract
The laminated structure of graphene oxide (GO) confers unique interactions with water molecules which may be utilised in a range of applications that require materials with tuneable hygroscopic properties. The precise role of the expandable interlayer spacing and functional groups in GO laminates has not completely been understood to date. Herein, we report the experimental and theoretical investigations on the adsorption and desorption behaviour of water in GO laminates as a function of relative pressure. We observed that GO imparts high water uptake capacity of up to 0.58 gram of water per gram of GO (g g-1), which is significantly higher than silica gel as a conventional desiccant material. More interestingly, the adsorption and desorption kinetics of GO is five times higher than silica gel. The observed extraordinary adsorption/desorption rate can be attributed to the high capillary pressure in GO laminates as well as micro meter sized tunnel-like wrinkles located at the surface.
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Affiliation(s)
- B Lian
- School of Chemical Engineering , University of New South Wales Sydney , Australia
| | - S De Luca
- School of Chemical Engineering , University of New South Wales Sydney , Australia
| | - Y You
- School of Materials Science and Engineering , University of New South Wales , Sydney , Australia .
| | - S Alwarappan
- CSIR - Central Electrochemical Research Institute , Karaikudi 630003 , Tamilnadu , India
| | - M Yoshimura
- Surface Science Laboratory , Toyota Technological Institute , Nagoya , Japan
| | - V Sahajwalla
- School of Materials Science and Engineering , University of New South Wales , Sydney , Australia .
| | - S C Smith
- School of Chemical Engineering , University of New South Wales Sydney , Australia
| | - G Leslie
- School of Chemical Engineering , University of New South Wales Sydney , Australia
| | - R K Joshi
- School of Materials Science and Engineering , University of New South Wales , Sydney , Australia .
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Sood A, Raman DK, Joshi RK, Gupta D. Tungiasis: Outbreak investigation of a zoonosis during overseas deployment. Med J Armed Forces India 2017; 73:375-379. [PMID: 29386713 DOI: 10.1016/j.mjafi.2017.08.011] [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: 07/29/2017] [Accepted: 08/29/2017] [Indexed: 11/24/2022] Open
Abstract
Background Tungiasis is an ectoparasitosis caused by the sand flea Tunga penetrans. It is endemic in the under privileged communities of Latin America, the Caribbean and Sub Saharan Africa with geographic and seasonal variations even within endemic areas. We describe investigation of an outbreak of Tungiasis in troops deployed as part of UN peacekeeping force in Central Africa. Methods Tungiasis was diagnosed in an unusually large number of cases of severely pruritic boils over feet in soldiers of a UN peacekeeping battalion. An outbreak investigation was carried out and the outbreak was described in time, place and person distribution. A retrospective cohort study was done to ascertain the associated risk factors. Results A total of 36 cases were identified of which 33 had laboratory confirmation. Of the 36 cases, 10(27.77%) had only Fortaleza Stage II lesions, 22 (61.11%) a combination of Fortaleza Stage II and III lesions and four (11.11%) cases had a combination of Stage, II, III and IV lesions. Secondary bacterial infection was seen in 25 (69.44%) cases. Epidemiological analysis revealed that it was a common source single exposure outbreak traced to a temporary campsite along one of the patrolling routes. Conclusion In a Military setting an integrated approach combining health education and environmental control is required to prevent such outbreaks.
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Affiliation(s)
- Aradhana Sood
- Associate Professor, Department of Dermatology & Venereology, Armed Forces Medical College, Pune 411040, India
| | - D K Raman
- Associate Professor, Department of Pathology, Armed Forces Medical College, Pune 411040, India
| | - R K Joshi
- Associate Professor, Department of Community Medicine, Armed Forces Medical College, Pune 411040, India
| | - Darpan Gupta
- Classified Specialist (Surgery), Command Hospital (Western Command), Chandimandir, India
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Da Silva R, Mazumdar A, Mapder T, Peketi A, Joshi RK, Shaji A, Mahalakshmi P, Sawant B, Naik BG, Carvalho MA, Molletti SK. Salinity stratification controlled productivity variation over 300 ky in the Bay of Bengal. Sci Rep 2017; 7:14439. [PMID: 29089526 PMCID: PMC5663938 DOI: 10.1038/s41598-017-14781-3] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [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: 03/10/2017] [Accepted: 10/16/2017] [Indexed: 11/12/2022] Open
Abstract
The unique hydrographic setting of the Bay of Bengal (BoB) makes it an ideal tropical marine system to study the influence of regional and global forcings on productivity and [CO2aq] through the late quaternary. Enormous fresh water flux into the BoB and consequent salinity stratification significantly weaken the convective mixing and wind driven processes which are commonly responsible for transport of nutrients to the euphotic zone driving primary productivity. Here we present a high resolution organic carbon-CaCO3 MAR and δ13CTOC records for the last 300 ky from the BoB. The results show significant productivity variation at marine isotope sub-stages and millennial timescales. Colder sub-stages and stadials (Dansgard-Oeschger cycle) show a boost in productivity which may be attributed to thinning of low salinity cap, thereby facilitating efficient nutrient transport across the euphotic zone by the combination of wind driven processes (entrainment and upwelling), convective mixing and cold core eddies. The [CO2aq] was a net result of global pCO2 variation and regional processes. Our long term high-resolution data indicates a possibility of marked change in productivity/biogeochemistry of BOB in the future due to global warming, thus affecting the coastal economy.
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Affiliation(s)
- R Da Silva
- CSIR, National Institute of Oceanography, Donapaula, Goa, 403004, India
| | - A Mazumdar
- CSIR, National Institute of Oceanography, Donapaula, Goa, 403004, India.
| | - T Mapder
- ACEMS, Queensland University of Technology, Brisbane, QLD4000, Australia
| | - A Peketi
- CSIR, National Institute of Oceanography, Donapaula, Goa, 403004, India
| | - R K Joshi
- Geological Survey of India, Salt lake, Kolkata, 700091, India
| | - A Shaji
- Centre for Marine Living Resources & Ecology, Kochi, 682037, Kerala, India
| | - P Mahalakshmi
- Flat No. CS-1, Block-C, Astral Garden, Panaji, 403004, Goa, India
| | - B Sawant
- CSIR, National Institute of Oceanography, Donapaula, Goa, 403004, India
| | - B G Naik
- CSIR, National Institute of Oceanography, Donapaula, Goa, 403004, India
| | - M A Carvalho
- CSIR, National Institute of Oceanography, Donapaula, Goa, 403004, India
| | - S K Molletti
- Delta Studies Institute, Andhra University, Visakhapatnam, 530017, Andhra Pradesh, India
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Villa A, Wolff A, Narayana N, Dawes C, Aframian DJ, Lynge Pedersen AM, Vissink A, Aliko A, Sia YW, Joshi RK, McGowan R, Jensen SB, Kerr AR, Ekström J, Proctor G. World Workshop on Oral Medicine VI: a systematic review of medication-induced salivary gland dysfunction. Oral Dis 2016; 22:365-82. [PMID: 26602059 DOI: 10.1111/odi.12402] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.9] [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: 08/07/2015] [Revised: 11/11/2015] [Accepted: 11/14/2015] [Indexed: 12/11/2022]
Abstract
The aim of this paper was to perform a systematic review of the pathogenesis of medication-induced salivary gland dysfunction (MISGD). Review of the identified papers was based on the standards regarding the methodology for systematic reviews set forth by the World Workshop on Oral Medicine IV and the PRISMA statement. Eligible papers were assessed for both the degree and strength of relevance to the pathogenesis of MISGD as well as on the appropriateness of the study design and sample size. A total of 99 papers were retained for the final analysis. MISGD in human studies was generally reported as xerostomia (the sensation of oral dryness) without measurements of salivary secretion rate. Medications may act on the central nervous system (CNS) and/or at the neuroglandular junction on muscarinic, α-and β-adrenergic receptors and certain peptidergic receptors. The types of medications that were most commonly implicated for inducing salivary gland dysfunction were those acting on the nervous, cardiovascular, genitourinary, musculoskeletal, respiratory, and alimentary systems. Although many medications may affect the salivary flow rate and composition, most of the studies considered only xerostomia. Thus, further human studies are necessary to improve our understanding of the association between MISGD and the underlying pathophysiology.
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Affiliation(s)
- A Villa
- Division of Oral Medicine and Dentistry, Brigham and Women's Hospital, Department of Oral Medicine, Infection and Immunity, Harvard School of Dental Medicine, Boston, MA, USA
| | - A Wolff
- Tel-Aviv Sourasky Medical Center and Saliwell Ltd., Harutzim, Israel
| | - N Narayana
- Department of Oral Biology, UNMC College of Dentistry, Lincoln, NE, USA
| | - C Dawes
- Department of Oral Biology, University of Manitoba, Winnipeg, MB, Canada
| | | | - A M Lynge Pedersen
- Department of Odontology, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - A Vissink
- University of Groningen and University Medical Center Groningen, Groningen, The Netherlands
| | - A Aliko
- Faculty of Dental Medicine, University of Medicine, Tirana, Albania.,Broegelmann Research Laboratory, Department of Clinical Science, University of Bergen, Bergen, Norway
| | - Y W Sia
- McGill University, Montreal, QC, Canada
| | - R K Joshi
- DAPMRV Dental College, Bangalore, India
| | - R McGowan
- New York University College of Dentistry, New York, NY, USA
| | - S B Jensen
- Department of Odontology, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - A R Kerr
- New York University College of Dentistry, New York, NY, USA
| | - J Ekström
- Department of Pharmacology, Institute of Neuroscience and Physiology, The Sahlgrenska Academy at the University of Gothenburg, Gothenburg, Sweden
| | - G Proctor
- Division of Mucosal & Salivary Biology, Dental Institute, King's College London, London, UK
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Faidi K, El Mokni R, Joshi RK, Hammami S, M'Henni MF, Mighri Z. Comparative study on the chemical constituents of essential oils from different organs of the Sicilian Kundmannia (Kundmannia sicula L.) DC. (Apiaceae) growing spontaneously in Tunisia. Nat Prod Res 2014; 28:1680-4. [PMID: 25022439 DOI: 10.1080/14786419.2014.935942] [Citation(s) in RCA: 7] [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] [Indexed: 10/25/2022]
Abstract
Essential oils from odorous and volatile compounds possessing several therapeutic benefits are considered of a paramount importance in everyday human life. This study deals with a comparative study of essential oils from different parts of an aromatic plant Kundmannia sicula (L.) DC. (Apiaceae) growing in Tunisia. The hydro-distilled essential oils of the leaves and inflorescences with mature seeds (IMS) of K. sicula were analysed for the first time by gas chromatography equipped with flame ionisation detector and gas chromatography coupled with mass spectrometry. Fifty leaves and 47 IMS constituents were identified, accounting for 97.9% and 98.2% of the total oil, respectively. The major compounds identified from the leaves and IMS oils were isocurcumenol (9.9-10.1%), hexadecanoic acid (9.5-10.9%), spathulenol (6.9-3.4%), 10-epi-γ-eudesmol (6.3-5.5%), α-cubebene (5.9-6.1%) and trans-dihydro occidentalol (52-6.6%). The essential oil consists mainly of oxygenated monoterpenes (50.7-53.2%).
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Affiliation(s)
- Khaled Faidi
- a Research Unit 12-04 , Applied Chemistry and Environment, Faculty of Sciences of Monastir , 5000 , Monastir , Tunisia
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15
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Abstract
The chemical composition of the essential oil of the leaves of Eucalyptus globulus (Myrtaceae) grown in North West Karnataka, has been analyzed by GC and GC/MS. Forty-eight constituents were identified, accounting 97.93% of the total oil. The major compounds were á-phellandrene (40.31%), á-pinene (13.71%), â-pinene (13.31%), ã-terpinene (9.61%) and 1,8-cineol (4.96%). The oil was rich in monoterpene hydrocarbons (81.14%). Scientific World, Vol. 10, No. 10, July 2012 p89-90 DOI: http://dx.doi.org/10.3126/sw.v10i10.6870
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Joshi RK, Nayak S. Functional characterization and signal transduction ability of nucleotide-binding site-leucine-rich repeat resistance genes in plants. Genet Mol Res 2011; 10:2637-52. [PMID: 22057959 DOI: 10.4238/2011.october.25.10] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Pathogen infection in plants is often limited by a multifaceted defense response triggered by resistance genes. The most prevalent class of resistance proteins includes those that contain a nucleotide-binding site-leucine-rich repeat (NBS-LRR) domain. Over the past 15 years, more than 50 novel NBS-LRR class resistance genes have been isolated and characterized; they play a significant role in activating conserved defense-signaling networks. Recent molecular research on NBS-LRR resistance proteins and their signaling networks has the potential to broaden the use of resistance genes for disease control. Various transgenic approaches have been tested to broaden the disease resistance spectrum using NBS-LRR genes. This review highlights the recent progress in understanding the structure, function, signal transduction ability of NBS-LRR resistance genes in different host-pathogen systems and suggests new strategies for engineering pathogen resistance in crop plants.
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Affiliation(s)
- R K Joshi
- Centre of Biotechnology, Siksha O Anusandhan University, Bhubaneswar, India.
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17
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Joshi RK, Mohanty S, Subudhi E, Nayak S. Isolation and characterization of NBS-LRR- resistance gene candidates in turmeric (Curcuma longa cv. surama). Genet Mol Res 2010; 9:1796-806. [PMID: 20830672 DOI: 10.4238/vol9-3gmr910] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Turmeric (Curcuma longa), an important asexually reproducing spice crop of the family Zingiberaceae is highly susceptible to bacterial and fungal pathogens. The identification of resistance gene analogs holds great promise for development of resistant turmeric cultivars. Degenerate primers designed based on known resistance genes (R-genes) were used in combinations to elucidate resistance gene analogs from Curcuma longa cultivar surama. The three primers resulted in amplicons with expected sizes of 450-600 bp. The nucleotide sequence of these amplicons was obtained through sequencing; their predicted amino acid sequences compared to each other and to the amino acid sequences of known R-genes revealed significant sequence similarity. The finding of conserved domains, viz., kinase-1a, kinase-2 and hydrophobic motif, provided evidence that the sequences belong to the NBS-LRR class gene family. The presence of tryptophan as the last residue of kinase-2 motif further qualified them to be in the non-TIR-NBS-LRR subfamily of resistance genes. A cluster analysis based on the neighbor-joining method was carried out using Curcuma NBS analogs together with several resistance gene analogs and known R-genes, which classified them into two distinct subclasses, corresponding to clades N3 and N4 of non-TIR-NBS sequences described in plants. The NBS analogs that we isolated can be used as guidelines to eventually isolate numerous R-genes in turmeric.
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Affiliation(s)
- R K Joshi
- Centre of Biotechnology, Siksha O Anusandhan University, Bhubaneswar, India.
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18
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Joshi RK, Mujawar MHK, Kholkute SD. Antimicrobial activity of the extracts of Craniotome furcata (Lamiaceae). J Ethnopharmacol 2010; 128:703-704. [PMID: 20176098 DOI: 10.1016/j.jep.2010.02.001] [Citation(s) in RCA: 5] [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] [Subscribe] [Scholar Register] [Received: 10/23/2008] [Revised: 01/07/2010] [Accepted: 02/06/2010] [Indexed: 05/28/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Craniotome furcata (Link.) O. Kuntze (Lamiaceae) is used in the traditional medicine for the treatment of cuts and wounds indicating antimicrobial activity. AIM OF THE STUDY To validate the traditional medicinal claim, in vitro antimicrobial activity of the extracts was screened against eleven human pathogenic bacteria and fungi. MATERIALS AND METHODS The ethyl acetate (CE) and n-butanol (CB) extracts of the aerial parts of Craniotome furcata were tested against four Gram-positive bacteria, four Gram-negative bacteria and three fungi species. Antimicrobial activity was determined by the tube-dilution method. RESULTS The CE and CB extracts showed antimicrobial activity against all of the tested microorganisms, with minimum inhibitory concentration (MIC) values in the range of 0.41-4.58mg/ml. CONCLUSIONS The tested microbes Micrococcus flavus and Escherichia coli were highly susceptible to extract CE and antimicrobial activity of CB is comparable to that of extract CE against Escherichia coli and Staphylococcus faecalis while it is better than that of extract CE, against Klebsiella pneumoniae. Both the extracts were found less susceptible against tested fungi.
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Affiliation(s)
- R K Joshi
- Regional Medical Research Center, Indian Council of Medical Research, Belgaum, Karnataka 590010, India.
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19
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Abstract
In2O3 nanoparticle layers having an average size of 8, 11, 15, 21, and 29 nm have been deposited using a two-step method consisting of chemical capping and dip coating techniques. The gas sensing properties in terms of sensor response and response time of the nanoparticle layers towards ethanol have been studied as a function of ethanol concentration and operating temperature. It has been observed that the sensor response increases and the response time decreases with decreasing size in the size range of 5-15 nm. The increase in sensor response at smaller nanoparticle size has been explained in terms of the increase in surface area and particle size becoming comparable to the electron Debye length.
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Affiliation(s)
- V N Singh
- Thin Film Laboratory, Department of Physics, Indian Institute of Technology Delhi, Hauz Khas, New Delhi 110016, India
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20
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de Vries T, Yen TY, Joshi RK, Storm J, van Den Eijnden DH, Knegtel RM, Bunschoten H, Joziasse DH, Macher BA. Neighboring cysteine residues in human fucosyltransferase VII are engaged in disulfide bridges, forming small loop structures. Glycobiology 2001; 11:423-32. [PMID: 11425803 DOI: 10.1093/glycob/11.5.423] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.6] [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: 11/14/2022] Open
Abstract
Among alpha 3-fucosyltransferases (alpha3-FucTs) from most species, four cysteine residues appear to be highly conserved. Two of these cysteines are located at the N-terminus and two at the C-terminus of the catalytic domain. FucT VII possesses two additional cysteines in close proximity to each other located in the middle of the catalytic domain. We identified the disulfide bridges in a recombinant, soluble form of human FucT VII. Potential free cysteines were modified with a biotinylated alkylating reagent, disulfide bonds were reduced and alkylated with iodoacetamide, and the protein was digested with either trypsin or chymotrypsin, before characterization by high-performance liquid chromatography/electrospray ionization mass spectrometry. More than 98% of the amino acid sequence for the truncated enzyme (beginning at amino acid 53) was verified. Mass spectrometry analysis also demonstrated that both potential N-linked sites are occupied. All six cysteines in the FucT VII sequence were shown to be disulfide-linked. The pairing of the cysteines was determined by proteolytic cleavage of nonreduced protein and subsequent analysis by mass spectrometry. The results demonstrated that Cys(68)-Cys(76), Cys(211)-Cys(214), and Cys(318)-Cys(321) are disulfide-linked. We have used this information, together with a method of fold recognition and homology modeling, using the (alpha/beta)(8)-barrel fold of Escherichia coli dihydrodipicolinate synthase as a template to propose a model for FucT VII.
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Affiliation(s)
- T de Vries
- Department of Medical Chemistry, Vrije Universiteit Amsterdam, Van der Boechorststraat 7, 1081 BT Amsterdam, The Netherlands
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Risch K, Strebel HP, Joshi RK, Lutz J, Brock J, Asadullah K, Volk H, Lehmann M. Methyl hydrogen fumarate inhibits acute and chronic rejection in rat kidney transplantation models. Transplant Proc 2001; 33:545-6. [PMID: 11266950 DOI: 10.1016/s0041-1345(00)02134-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Affiliation(s)
- K Risch
- Institute for Medical Biochemistry and Molecular Biology, Med Faculty, University Rostock, Rostock, Germany
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22
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Joshi YR, Mathur DR, Joshi RK. Mycetoma at unusual site--orbit & patella. INDIAN J PATHOL MICR 2001; 44:79. [PMID: 12562008] [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: 02/28/2023] Open
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23
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Li J, Yen TY, Allende ML, Joshi RK, Cai J, Pierce WM, Jaskiewicz E, Darling DS, Macher BA, Young WW. Disulfide bonds of GM2 synthase homodimers. Antiparallel orientation of the catalytic domains. J Biol Chem 2000; 275:41476-86. [PMID: 11018043 DOI: 10.1074/jbc.m007480200] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.0] [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: 11/06/2022] Open
Abstract
GM2 synthase is a homodimer in which the subunits are joined by lumenal domain disulfide bond(s). To define the disulfide bond pattern of this enzyme, we analyzed a soluble form by chemical fragmentation, enzymatic digestion, and mass spectrometry and a full-length form by site-directed mutagenesis. All Cys residues of the lumenal domain of GM2 synthase are disulfide bonded with Cys(429) and Cys(476) forming a disulfide-bonded pair while Cys(80) and Cys(82) are disulfide bonded in combination with Cys(412) and Cys(529). Partial reduction to produce monomers converted Cys(80) and Cys(82) to free thiols while the Cys(429) to Cys(476) disulfide remained intact. CNBr cleavage at amino acid 330 produced a monomer-sized band under nonreducing conditions which was converted upon reduction to a 40-kDa fragment and a 24-kDa myc-positive fragment. Double mutation of Cys(80) and Cys(82) to Ser produced monomers but not dimers. In summary these results demonstrate that Cys(429) and Cys(476) form an intrasubunit disulfide while the intersubunit disulfides formed by both Cys(80) and Cys(82) with Cys(412) and Cys(529) are responsible for formation of the homodimer. This disulfide bond arrangement results in an antiparallel orientation of the catalytic domains of the GM2 synthase homodimer.
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Affiliation(s)
- J Li
- Department of Molecular, Cellular, and Craniofacial Biology, School of Dentistry, University of Louisville, Louisville, Kentucky 40292, USA
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Yen TY, Joshi RK, Yan H, Seto NO, Palcic MM, Macher BA. Characterization of cysteine residues and disulfide bonds in proteins by liquid chromatography/electrospray ionization tandem mass spectrometry. J Mass Spectrom 2000; 35:990-1002. [PMID: 10972999 DOI: 10.1002/1096-9888(200008)35:8<990::aid-jms27>3.0.co;2-k] [Citation(s) in RCA: 46] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Cysteine residues and disulfide bonds are important for protein structure and function. We have developed a simple and sensitive method for determining the presence of free cysteine (Cys) residues and disulfide bonded Cys residues in proteins (<100 pmol) by liquid chromatography/electrospray ionization tandem mass spectrometry (LC/ESI-MS/MS) in combination with protein database searching using the program Sequest. Free Cys residues in a protein were labeled with PEO-maleimide biotin immediately followed by denaturation with 8 M urea. Subsequently, the protein was digested with trypsin or chymotrypsin and the resulting products were analyzed by capillary LC/ESI-MS/MS for peptides containing modified Cys and/or disulfide bonded Cys residues. Although the MS method for identifying disulfide bonds has been routinely employed, methods to prevent thiol-disulfide exchange have not been well documented. Our protocol was found to minimize the occurrence of the thiol-disulfide exchange reaction. The method was validated using well-characterized proteins such as aldolase, ovalbumin, and beta-lactoglobulin A. We also applied this method to characterize Cys residues and disulfide bonds of beta 1,4-galactosyltransferase (five Cys), and human blood group A and B glycosyltransferases (four Cys). Our results demonstrate that beta 1,4-galactosyltransferase contains one free Cys residue and two disulfide bonds, which is in contrast to work previously reported using chemical methods for the characterization of free Cys residues, but is consistent with recently published results from x-ray crystallography. In contrast to the results obtained for beta 1,4-galactosyltransferase, none of the Cys residues in A and B glycosyltransferases were found to be involved in disulfide bonds.
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Affiliation(s)
- T Y Yen
- Department of Chemistry and Biochemistry, San Francisco State University, San Francisco, California 94132, USA
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25
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Abstract
Previous research has shown that corticospinal as well as rubrospinal neurons express the high-affinity trkB and trkC receptors but not the high-affinity trkA receptor. To determine if bulbospinal neurons in other brainstem areas show the same pattern of trk receptor expression, bulbospinal cells were labelled via the injection of the retrograde tracer FluoroGold into the spinal cord. Brainstem sections were then processed for in situ hybridization using oligonucleotide probes to the trkA, trkB, and trkC receptors. The results indicated that, although trkA expression occurred in brainstem areas that contain bulbospinal neurons (e.g., the vestibular nuclei, and the pontine reticular formation), very few FluoroGold-labelled cells expressed the trkA receptor. In contrast, at least 90% of bulbospinal cells in each brainstem area examined expressed the trkB receptor. Quantitative analysis indicated differences in the level of trkB labelling between bulbospinal cells in different brainstem areas, with the highest levels seen in the locus coeruleus and magnocellular portion of the red nucleus, and the lowest levels seen in the medial and superior vestibular nuclei and the raphe obscurus. With the exception of the accessory trigeminal nucleus, over 84% of bulbospinal cells in each brainstem area also expressed the trkC receptor. TrkC receptor expression was greatest in the locus coeruleus and subcoeruleus and lowest in the accessory trigeminal nucleus, the raphe magnus, and the vestibular nuclei. Results indicate that, as with other descending pathways, virtually all bulbospinal pathways should be amenable to treatment with brain-derived neurotrophic factor, neurotrophin-4/5 or neurotrophin-3, but not nerve growth factor, following spinal cord damage.
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Affiliation(s)
- V R King
- Division of Biomedical Sciences, Queen Mary and Westfield College, London, UK
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26
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Shakya S, Joshi RK, Gupta N, Chauhan HV. Organ culture of chicken bursa as a model to study the pathogenicity of infectious bursal disease virus isolates. Avian Dis 1999; 43:167-71. [PMID: 10396628] [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: 02/13/2023]
Abstract
In vitro study with chicken bursal organ culture was attempted to assess the pathogenicity of locally isolated infectious bursal disease virus (IBDV) initially isolated from the bursa of naturally infected birds. In bursal organ culture, lymphoblastic transformation was noticed as early as 24 hr postinoculation and reached maximum at 72 hr postinoculation. The other microscopic changes were increased number of macrophages and formation of plasma cells. The IBDV antigen was detected 24 hr onward by coagglutination test with antibody coated Staphylococcus aureus strain Cowan I. On the basis of lesion score, the three isolates of IBDV (A, B, and C) were graded as virulent (B isolate) and moderately virulent (A and C isolates). A similar pattern of pathogenicity was also observed in the in vivo pathogenicity studies in chicken based on bursa: body weight ratio and histopathologic lesion score. The bursal organ culture thus provides a useful experimental model to differentiate the IBDV isolates on the basis of their virulence.
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Affiliation(s)
- S Shakya
- Department of Veterinary Microbiology, College of Veterinary Science and Animal Husbandry, Indira Gandhi Agricultural University, Durg, Madhya Pradesh, India
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27
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Abstract
Roots of Prunus armeniaca yielded a new A-type proanthocyanidin whose structure was assigned as ent-epiafzelechin-3-O-p-hydroxybenzoate-(4alpha-->8, 2alpha-->O-->7)-epiafzelechin (1). The structure of 1 was determined through extensive 1D and 2D NMR studies.
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Affiliation(s)
- D Prasad
- Department of Chemistry, HNB Garhwal University, Srinagar, Garhwal-246 174, India
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28
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Abstract
The coagglutination test was standardised for detection of fowl pox antigen in infected scabs and chorioallontoic membrane of chicken embryos. The Staphylococcus aureus Cowan I strain, containing large amounts of Protein A in their cell wall, coated with fowl pox antibodies was found specific and sensitive for detection of fowl pox antigen. The test is easy to perform and rapid as the positive results can be read within 15 seconds.
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Affiliation(s)
- R K Joshi
- Department of Veterinary Microbiology, College of Veterinary Science and Animal Husbandry, Anjora, India
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Affiliation(s)
- S Shakya
- Department of Veterinary Microbiology, College of Veterinary Science and Animal Husbandry, Anjora, Durg MP, India
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Joshi RK, Haleem A, Azher M, Abanni A. Lichen scrofulosorum with cervical tuberculous lymphadenopathy - A case report. Ann Saudi Med 1996; 16:206-9. [PMID: 17372464] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 03/08/2023] Open
Affiliation(s)
- R K Joshi
- Departments of Dermatology, Pathology, and Pulmonary Medicine, Riyadh Armed Forces Hospital, Riyadh, Saudi Arabia
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31
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Joshi RK, Meister T, Scapozza L, Ha TK. A new quantum chemical approach in QSAR-analysis. Parametrisation of conformational energies into molecular descriptors JMn (steric) and JSn (electronic). Arzneimittelforschung 1994; 44:779-90. [PMID: 8053981] [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: 01/28/2023]
Abstract
Two new types of structure-related molecular descriptors, JMn and JSn, have been developed using conformational energies from quantum chemical calculations. For this purpose propipocaine (CAS 3670-68-6) was chosen as a model and 42 analogues were studied. The quantum chemical calculations were performed applying AM1 and PCILO approximation methods. Appropriate mathematical models were designed to calculate steric parameter log JM1 and electronic parameters JS1 to JS6. The values obtained for these parameters were used in multiple linear regression analysis for the evaluation of the structure-activity relationship. Furthermore, a comparison between electronic parameters JSn and sigma (Hammett) was made. The results show, that these parameters can be used successfully in predicting the biological activity of compounds in this model. Although, JS5 values are comparable to sigma-Hammett, the electronic parameter JS2 gives a better correlation in QSAR-analysis involving two parameters JS2 and log JM1.
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Affiliation(s)
- R K Joshi
- Department of Pharmacy, Swiss Federal Institute of Technology, Eidgenössische Technische Hochschule, Zürich
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33
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Abstract
We report a 9-year-old Saudi girl with dyskeratosis congenita. In addition to the known manifestations of this disease, she also had the additional features of tufts of hairs on the limbs, and an early onset of keratinized basal cell papillomas on her trunk.
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Affiliation(s)
- R K Joshi
- Department of Dermatology, Riyadh Armed Forces Hospital, Saudi Arabia
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34
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Abstract
We report a male child with autosomal recessive epidermolysis bullosa simplex presenting at birth. The patient subsequently developed cutaneous atrophy, nail dystrophy, milia and alopecia. He had growth retardation and anaemia, but there were no other associated abnormalities. Electron microscopy showed epidermolytic cleavage. The family history indicated an autosomal recessive mode of inheritance.
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Affiliation(s)
- A Abanmi
- Riyadh Armed Forces Hospital, Saudi Arabia
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35
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Affiliation(s)
- A Abanmi
- Riyadh Armed Forces Hospital, Saudi Arabia
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36
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Abstract
A patient is reported who had ataxia telangiectasia with multiple cutaneous lesions mainly on the limbs, which showed atrophy and scarring. Histopathology of these skin lesions showed tuberculoid granulomas without frank collagen necrobiosis in the dermis. Chromosomal analysis revealed a translocation between 7 and 14 as well as deletion of chromosomes 4 and 6.
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Affiliation(s)
- R K Joshi
- Division of Dermatology, Riyadh Armed Forces Hospital, Saudi Arabia
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37
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Abstract
Two patients with Sweet's syndrome are described, both of whom were treated with doxycycline 200 mg daily, and responded well to therapy. Doxycycline appears to be an effective alternative to corticosteroids for the treatment of Sweet's syndrome.
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Affiliation(s)
- R K Joshi
- Department of Dermatology, Riyadh Armed Forces Hospital, Saudi Arabia
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38
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Abstract
Ulcerative lichen planus (ULP) is a rare variant of lichen planus. It is resistant to all therapeutic modalities, and most of the patients with this disorder described in the literature have been successfully treated only by surgical skin grafting. We report a case with ULP successfully treated with etretinate.
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Affiliation(s)
- R K Joshi
- Riyadh Armed Forces Hospital, Saudi Arabia
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39
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Abstract
A case of subcorneal pustular dermatosis (SCPD), as a presenting feature in a patient with multiple myeloma, is described. This is the seventh case report of this association and the first from the Middle East. Five of these cases, including the present report, have been of the IgA paraprotein type, IgA intraepidermal deposits have been described in a few patients with SCPD associated with IgA paraproteinaemias but have not been detected in our patient.
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40
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Affiliation(s)
- R K Joshi
- Riyadh Armed Forces Hospital, Saudi Arabia
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41
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Abstract
We report two middle-aged women who presented with multiple, discrete, non-follicular, oval, pale, asymptomatic lesions on the neck. Clinical and histopathological features were compatible with the entity of white fibrous papulosis of the neck.
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Affiliation(s)
- R K Joshi
- Riyadh Armed Forces Hospital, Saudi Arabia
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42
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Affiliation(s)
- R K Joshi
- Riyadh Armed Forces Hospital, Saudi Arabia
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43
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Sharif HS, Clark DC, Aabed MY, Aideyan OA, Mattsson TA, Haddad MC, Ohman SO, Joshi RK, Hasan HA, Haleem A. Mycetoma: comparison of MR imaging with CT. Radiology 1991; 178:865-70. [PMID: 1994434 DOI: 10.1148/radiology.178.3.1994434] [Citation(s) in RCA: 58] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Magnetic resonance (MR) images obtained in 18 patients with pathologically confirmed mycetoma in the body (n = 4) or lower extremity (n = 14) were retrospectively reviewed and compared with computed tomographic (CT) scans in 15 patients and surgical findings in 10. T1-weighted images showed an infiltrating mass (same signal intensity as muscle) involving skin, subcutaneous fat, muscles, tendons, and other tissues. On T2-weighted images, the mass and affected structures showed moderately increased signal intensity. Bone marrow involvement was detected in seven patients and was best visualized on T1-weighted images. CT showed moderate enhancement of the infiltrative process in all patients. Bone changes, seen in nine, included coarse trabeculation, periosteal reaction, endosteal proliferation, and patchy destruction. MR imaging and CT were comparable and correlated well with surgery in showing the extent of soft-tissue involvement. Early bone changes (important for therapy planning for pedal mycetoma) were seen only at CT. The study showed that MR imaging is sensitive for assessing the extent of mycetoma in the soft tissues. CT should be the method of choice for staging pedal lesions because it can be used to detect early bone involvement.
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Affiliation(s)
- H S Sharif
- Department of Radiology, Riyadh Armed Forces Hospital, Saudi Arabia
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44
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Abstract
In an uncontrolled study, the effectiveness of rifampicin was assessed in cutaneous leishmaniasis. Twelve of 15 patients (80%) showed good response. The treatment ranged from 2 to 12 weeks. Tolerance of the drug was excellent and apart from red discolouration of the urine, no other side effects were encountered. Rifampicin appears to have a place in the management of cutaneous leishmaniasis.
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Affiliation(s)
- R K Joshi
- Department of Dermatology, Al-Huwaylat Hospital, Jubail Industrial City, Saudi Arabia
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45
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Abstract
The coagglutination test was standardised using Staphylococcus aureus strain Cowan I (containing Protein A) coated with anti-goat pox serum for the detection of goat pox antigen of infected goat skin or kid kidney cell culture antigen. Agglutination was observed within 10 seconds in virus dilutions up to 10(-6). As the test is easy to perform it can be used for rapid diagnosis of goat pox.
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Affiliation(s)
- R K Joshi
- Department of Microbiology and Public Health, College of Veterinary Sciences, G. B. Pant University of Agriculture and Technology, Pantnagar, Inida
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46
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Verma KC, Jain VK, Joshi RK. Dermatoglyphics in Ichthyosis and Alopecia Areata. Indian J Dermatol Venereol Leprol 1981; 47:35-37. [PMID: 28211392] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
A total of 80 cases comprising of 40 controls and twenty each of ichthyosis and alopecia areata were studied for dermatoglyphic patterns and ridge count. Statistically significant increased incidence of whorl pattern was observed in female cases of autosomal dominant and sex linked ichthyosis. Significant change in the distribution of patterns was found in female cases of alopecia areata.
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47
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Verma KC, Joshi RK, Jain VK. Dermatoglyphics in Psoriasis. Indian J Dermatol Venereol Leprol 1980; 46:28-30. [PMID: 28218087] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Forty cases of psoriasis and same number of controls were subjected to dermatoglyphic studies. Control cases did not show any arch pattern on 4th and 5th fingers. Increased incinerate of whorl pattern was observed in psoriatic females and incidence was decreased in psoriatic males. Whorl pattern was more commonly seen on 4th finger, and more on right hand in psoriatic cases. Total ridge count was found to be decreased in psoriatic males.
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48
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Verma KC, Bhargava N, Joshi RK. Cutaneous Leishmaniasis. Indian J Dermatol Venereol Leprol 1979; 45:341-343. [PMID: 28223616] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
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49
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Abstract
Two cases of Papillon-Lefevre Syndrome (PLS) in a family are reported. Association of recurrent infections, arachnodactyly, intracranial calcification and phalangeal abnormality have been observed. Because there is no history of consanguinity, and autosomal recessive pattern of inheritance is suggested.
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50
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Verma KC, Bhargava NC, Joshi RK. Scleredema. Indian J Dermatol Venereol Leprol 1979; 45:63-66. [PMID: 28223567] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
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