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1.
Luminescence ; 39(3): e4718, 2024 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-38501347

RESUMO

The structural, surface morphological, optical absorption and emission features of Y2 O3 :Ce (0%-5%) were studied. The samples had a body-centred cubic crystal structure. The undoped sample had a crystallite size of 29.03 nm, and it varied after doping with Ce. The grain size of the samples varied from 23.00 to 50.78 nm. All the samples exhibited a strong absorption band at 206 nm due to F-centre absorption and absorption involving the delocalised bands. In addition, the doped samples exhibited a secondary band at ~250 nm due to 4f → 5d transitions of Ce3+ ions. The optical bandgap of the undoped sample was found to be ~5.37 eV, and it decreased to 5.20 eV with an increase in Ce concentration to 5%. The undoped sample under 350-nm excitation exhibited a broad photoluminescence (PL) emission band with the maxima at 406 nm and a secondary band at 463 nm. In contrast, multiple PL peaks were centred at ~397, 436, 466, 488 and 563 nm in all the doped samples. The average lifetime of the emission band at 406 nm was 1.05 ns and that of the emission band at ~466 nm was 1.63 ns. The material has potential for solid-state lighting applications.


Assuntos
Azocinas , Compostos Benzidrílicos , Iluminação , Substâncias Luminescentes
2.
Cryo Letters ; 44(5): 299-306, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-38032310

RESUMO

BACKGROUND: Semen cryopreservation is a complex process during which there is alteration in the expression of sperm and seminal plasma proteins, molecular weight of protein or loss of membrane proteins during the process. In order to compensate for these changes, different membrane stabilizers are used in freezing semen extenders. However, there is scarcity of such studies during cryopreservation of goat semen. OBJECTIVE: To investigate the effect of membrane stabilizers on sperm membrane protein expression during cryopreservation of goat semen. MATERIALS AND METHODS: A total of 36 semen ejaculates from nine Assam Hill Goat bucks aged 2 to 2.5 years was collected by artificial vagina method. Three membrane stabilizers, each at two different concentrations viz. 50 and 80 mM sucrose, 50 and 100 mM trehalose, and 100 and 150 ng per mL IGF-1 (insulin-like growth factor 1 protein) were added to Tris-citric acid fructose egg yolk glycerol (TCFEYG) extender and semen samples were cryopreserved. The sperm membrane protein profile was studied in fresh and cryopreserved semen by SDS-PAGE. RESULTS: SDS- PAGE of sperm membrane extract of fresh semen revealed the presence of 24 protein bands with molecular weights ranging from 10 kDa to 240 kDa. Samples supplemented with 50 mM sucrose and 80 mM sucrose revealed 21 protein bands with molecular weights ranging from 10 kDa to 240 kDa. All the 21 protein bands were same as those observed in the sperm membrane of fresh spermatozoa, except that the 23 kDa, 29 kDa and 42 kDa bands were absent in frozen semen. Similarly, frozen semen extended with 50 mM trehalose and 100 mM trehalose revealed 22 protein bands with molecular weights ranging from 10 kDa to 240 kDa, but lacking the 29 kDa and 42 kDa bands. Proteins with molecular weights of 29 kDa, 130 kDa and 240 kDa were absent in frozen semen supplemented with 100 ng per mL IGF-1 and 150 ng per mL IGF-1. CONCLUSION: The present study revealed that supplementation of tris basic extender with trehalose at 100 mM and or IGF-1 at 100 ng/mL or 150 ng per mL improves the post-thaw semen characteristics and protects certain fertility related sperm membrane proteins. Doi.org/10.54680/fr23510110612.


Assuntos
Análise do Sêmen , Sêmen , Masculino , Feminino , Animais , Fator de Crescimento Insulin-Like I/farmacologia , Cabras , Trealose/farmacologia , Criopreservação/veterinária , Espermatozoides , Proteínas de Membrana , Sacarose/farmacologia
3.
J Laryngol Otol ; 137(3): 342-349, 2023 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-35478067

RESUMO

OBJECTIVE: To document laryngeal framework rupture following voluntary cough-holding as an airway complication of donning a personal protective equipment suit that was too small in size. METHODS: Clinical record and literature review, with proposition of plausible aerodynamics of the airway injury. RESULTS: Whilst carrying out his duty in the coronavirus disease ward, a resident attempted to stifle a paroxysm of cough when wearing a personal protective equipment suit that was too small with his neck flexed and restricted. There was a sudden release of pressure, intense pain and swelling in the neck with crepitus. Imaging revealed a non-displaced fracture in the lower end of the partially ossified right thyroid lamina, a cricothyroid membrane tear and subcutaneous emphysema. The symptoms resolved gradually on conservative management. CONCLUSION: This report underlines the importance of donning appropriately sized personal protective equipment and encouraging its proper use amongst coronavirus disease 2019 caregivers. Non-traumatic laryngeal injury, itself a rare event, has never been reported as a posture-related complication of wearing personal protective equipment.


Assuntos
COVID-19 , Humanos , Cuidadores , Tosse/etiologia , Equipamento de Proteção Individual/efeitos adversos , Controle de Infecções/métodos
4.
J Appl Microbiol ; 131(3): 1147-1161, 2021 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-33544959

RESUMO

AIMS: In the age where bacterial resistance to conventional antibiotics is increasing at an alarming rate, the use of the traditional plant, herb extracts or other bioactive constituents is gradually becoming popular as an anti-virulence agent to treat pathogenic diseases. Carvacrol, a major essential oil fraction of Oregano, possesses a wide range of bioactivities. Therefore, we aimed to study the effect of sub-inhibitory concentrations of carvacrol on major virulence traits of Vibrio cholerae. METHODS AND RESULTS: We have used in vitro as well as ex vivo models to access the anti-pathogenic role of carvacrol. We found that the sub-inhibitory concentration of carvacrol significantly repressed bacterial mucin penetrating ability. Carvacrol also reduced the adherence and fluid accumulation in the rabbit ileal loop model. Reduction in virulence is associated with the downregulated expression of tcpA, ctxB, hlyA and toxT. Furthermore, carvacrol inhibits flagellar synthesis by downregulating the expression of flrC and most of the class III genes. CONCLUSIONS: Carvacrol exhibited anti-virulence activity against V. cholerae, which involved many events including the inhibition of mucin penetration, adhesion, reduced expression of virulence-associated genes culminating in reduced fluid accumulation. SIGNIFICANCE AND IMPACT OF THE STUDY: These findings indicate that carvacrol possesses inhibitory activity against V. cholerae pathogenesis and might be considered as a potential bio-active therapeutic alternative to combat cholera.


Assuntos
Cólera , Óleos Voláteis , Origanum , Vibrio cholerae , Animais , Proteínas de Bactérias , Cólera/tratamento farmacológico , Cimenos , Óleos Voláteis/farmacologia , Coelhos , Vibrio cholerae/genética , Virulência
5.
Health Commun ; 36(12): 1464-1475, 2021 11.
Artigo em Inglês | MEDLINE | ID: mdl-32434444

RESUMO

Articulating that domestic workers in Singapore are marked by their subalternity, erased from the hegemonic discursive spaces in spite of their visibility as objects in the neoliberal economy, this manuscript draws on the culture-centered approach to conceptualize listening as a structurally transformative anchor to theorizing mental health. The narratives offered by workers reveal critical insights into the way structure functions to create conditions of mental health suffering in the performance of precarious domestic work, intricately tied to the erasure of voice. The material violence on the bodies of workers relates to the everyday challenges to mental health. A lack of access to infrastructures of information and communication add to the conditions of marginality. In listening to these storied descriptions of suffering in precariousness, we hear voices revealing limited alternatives to mental health care in poor working conditions, with workers entrapped in a cycle of stress, worry, and fear.


Assuntos
Migrantes , Humanos , Saúde Mental , Narração , Singapura , Violência
6.
Health Commun ; 36(12): 1453-1463, 2021 11.
Artigo em Inglês | MEDLINE | ID: mdl-32452233

RESUMO

Underpinned by the notion that community voices should be central to the development of localized communication infrastructures for health and well-being, this study applied Dutta's culture-centered approach to examine the meanings of health and the navigation of being healthy among 118 people residing in low-income suburban areas in Aotearoa New Zealand. The culture-centered approach is based on dialog between researchers and community members, and it centralizes local contexts by building theories from within the culture and co-creating dialogic spaces of listening, formed at the intersection of structure, culture, and agency. In this study, participants constructed health in relation to food, housing, and health care, underpinned by financial inaccessibility and a deep-rooted cultural conflict between the collectivist norms practiced by the community and the neoliberal individualized structure. The study illuminates how the pathologization of culture by structure constitutes poor health outcomes and how agentic expressions of culture negotiate local structures to regain health and well-being through acts of resistance.


Assuntos
Atenção à Saúde , Pobreza , Comunicação , Humanos , Negociação , Nova Zelândia
7.
West Indian med. j ; 69(3): 168-170, 2021. graf
Artigo em Inglês | LILACS | ID: biblio-1341889

RESUMO

ABSTRACT Rhinoscleroma (more appropriately 'scleroma') is a chronic, disfiguring inflammatory lesion that is rarely encountered in the present-day otolaryngology practice. The diagnosis often becomes difficult especially when it recurs and presents late with complications. This report illustrates the clinical and histologic features of rhinoscleroma in a defaulter patient who represents advanced-stage disease with orbital and intracranial extensions. Special emphasis has been provided on the computed tomography impressions such that the evolution of scleroma with time can be studied.


Assuntos
Humanos , Masculino , Pessoa de Meia-Idade , Rinoscleroma/patologia , Índice de Gravidade de Doença , Tomografia Computadorizada por Raios X , Rinoscleroma/diagnóstico por imagem
9.
Vet World ; 12(11): 1790-1796, 2019 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-32009758

RESUMO

BACKGROUND AND AIM: Elephant endotheliotropic herpesvirus (EEHV) is an emerging disease of elephant. Therefore, a study was conducted to know the actual status of the disease in Assam State of India. MATERIALS AND METHODS: A total of 289 Asian elephants of Assam were screened during 2 years of study from April 2017 to March 2019. The clinical symptoms of diseased as well as gross and histopathological changes of dead elephants were recorded for the diagnosis of the disease. Virus involved in the occurrence of the disease was confirmed by polymerase chain reaction (PCR). RESULTS: In the present study, a total of three elephant calves out of 22 were found positive to EEHV1A. On the other hand, three adult asymptomatic elephants were also found positive for EEHV1 on screening 267 captive Asian elephants of Assam. The amplified PCR product showed band size of 520, 600, and 930 bp. The PCR amplified product with size 600 bp had shown the gene sequence for EEHV1U77/HEL. Gross lesions include congested blood vessels of the liver and intestinal mucosa, foci of petechiae in the spleen, and heart and focal ulceration in the dorsal surface of the tongue. Microscopically, the kidneys showed intertubular edema and focal areas of degeneration associated with coagulative necrosis of the tubular epithelium. The liver showed hydropic degeneration and fatty changes of the hepatocytes. There was a massive proliferation of fibroblasts in the interlobular spaces which penetrated the necrosed areas of the hepatic lobules. CONCLUSION: A total of three wild rescued elephant calves and three asymptomatic adults were found positive for EEHV1A during the 2 years of study. The PCR amplified product with size 600 bp had shown the gene sequence for EEHV1U77/HEL.

10.
J Phys Condens Matter ; 30(35): 355302, 2018 Sep 05.
Artigo em Inglês | MEDLINE | ID: mdl-29972139

RESUMO

The anharmonic decay of phonons underlies many important effects in semiconductors, e.g. hotspot formation, phonon bottleneck and thermal resistivity. In this article, we evaluate the effect of quantum confinement on the anharmonic decay transition probability in a cubic isotropic material. This article focuses on the anharmonic decay of longitudinal optical phonons, generated from hot electrons, are directly related to formation of hotspots in the active region of semiconductor devices. The confinement effect has been realized in double interface heterostructure quantum well (DHSQW) (e.g. AlAs/GaAs/AlAs) and free-standing quantum well (FSQW) (e.g. GaAs) structures as the confined phonon modes have different properties inside the structures. The longitudinal-optical phonon decay rate is reduced for the case of a DHSQW compared to bulk material and for a FSQW the decay rate has a strong dependence on wavevector value of the three phonons involved.

11.
JNMA J Nepal Med Assoc ; 56(205): 137-140, 2017.
Artigo em Inglês | MEDLINE | ID: mdl-28598450

RESUMO

INTRODUCTION: The study of lower genital tract trauma has become important in gynaecological practice. There is paucity of reports on this clinical entity from our settings. The main aim of this study is to document injuries in female lower genital tract in Mid-Western Nepal. METHODS: Sixty female patients admitted to the hospital with genital tract injuries caused by coitus or accidents were included in the study. Details of the causes of trauma clinical presentations and management were recorded. RESULTS: These injuries were grouped according to etiological factors. This study included 33 (55%) coital injuries and 27 (45%) non- coital injuries. Out of coital injury, 12 cases were criminal assault (rape) in age group of 4 to 18 years. Four unmarried girls had consensual sex. Non-coital injuries were due to fall from height, cattle horn injuries, straddle type of trauma, vulvar haematoma and anorectal injuries. CONCLUSIONS: Appropriate surgical intervention can avert morbidity and mortality.


Assuntos
Genitália Feminina/lesões , Acidentes/estatística & dados numéricos , Adolescente , Adulto , Criança , Pré-Escolar , Coito , Feminino , Humanos , Nepal/epidemiologia , Estupro/estatística & dados numéricos , Centros de Atenção Terciária
13.
PLoS One ; 11(12): e0167702, 2016.
Artigo em Inglês | MEDLINE | ID: mdl-27942031

RESUMO

A comprehensive germplasm evaluation study of wheat accessions conserved in the Indian National Genebank was conducted to identify sources of rust and spot blotch resistance. Genebank accessions comprising three species of wheat-Triticum aestivum, T. durum and T. dicoccum were screened sequentially at multiple disease hotspots, during the 2011-14 crop seasons, carrying only resistant accessions to the next step of evaluation. Wheat accessions which were found to be resistant in the field were then assayed for seedling resistance and profiled using molecular markers. In the primary evaluation, 19,460 accessions were screened at Wellington (Tamil Nadu), a hotspot for wheat rusts. We identified 4925 accessions to be resistant and these were further evaluated at Gurdaspur (Punjab), a hotspot for stripe rust and at Cooch Behar (West Bengal), a hotspot for spot blotch. The second round evaluation identified 498 accessions potentially resistant to multiple rusts and 868 accessions potentially resistant to spot blotch. Evaluation of rust resistant accessions for seedling resistance against seven virulent pathotypes of three rusts under artificial epiphytotic conditions identified 137 accessions potentially resistant to multiple rusts. Molecular analysis to identify different combinations of genetic loci imparting resistance to leaf rust, stem rust, stripe rust and spot blotch using linked molecular markers, identified 45 wheat accessions containing known resistance genes against all three rusts as well as a QTL for spot blotch resistance. The resistant germplasm accessions, particularly against stripe rust, identified in this study can be excellent potential candidates to be employed for breeding resistance into the background of high yielding wheat cultivars through conventional or molecular breeding approaches, and are expected to contribute toward food security at national and global levels.


Assuntos
Bases de Dados Genéticas , Resistência à Doença , Triticum/genética , Ascomicetos/patogenicidade , Índia , Locos de Características Quantitativas , Triticum/classificação , Triticum/imunologia , Triticum/microbiologia
14.
Hum Reprod ; 31(4): 854-65, 2016 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-26851602

RESUMO

STUDY QUESTION: Does investigation of metabolic perturbations in endometrial tissue of women with dormant genital tuberculosis (GTB) during the window of implantation (WOI) assist in improving the understanding of endometrial receptivity? SUMMARY ANSWER: In dormant GTB cases significant alterations in endometrial tissue metabolites occur, largely related to energy metabolism and amino acid biosynthesis in dormant GTB cases. WHAT IS KNOWN ALREADY: As an intracellular pathogen, Mycobacterium tuberculosis strongly influences the metabolism of host cells causing metabolic dysregulation. It is also accepted that dormant GTB impairs the receptive status of the endometrium. Global metabolic profiling is useful for an understanding of disease progression and distinguishing between diseased and non-diseased groups. STUDY DESIGN, SIZE, DURATION: Endometrial tissue samples were collected from patients reporting at the tertiary infertility care center during the period September 2011-March 2013. Women having tested positive for GTB were considered as the study group (n = 24). Normal healthy women undergoing sterilization (n = 26) and unexplained infertile women with repeated IVF failure (n = 21) volunteered to participate as controls. PARTICIPANTS/MATERIALS, SETTING, METHODS: Endometrial tissue samples were collected 6-10 days after confirmation of ovulation. PCR and BACTEC-460 culture were used for diagnosing GTB. Proton nuclear magnetic resonance (1H NMR) spectra of tissue were recorded using a 700 MHz Bruker Avance AV III spectrometer. Following phase and baseline correction of all NMR spectra by Bruker Topspin 2.1 software, spectral peak alignment of the data was performed. Multivariate analysis was applied to all spectra and individual metabolites identified and multiple correlation analysis was performed. MAIN RESULTS AND THE ROLE OF CHANCE: Leucine, isoleucine, acetate, lactate, glutamate, glutamine, methionine, lysine, creatine, glycogen, glycine, proline and choline were found to be significantly increased (P < 0.05) in endometrial tissue of women with dormant GTB compared with unexplained infertile women with repeated implantation failure. Valine, citrate, succinate and aspartate were also observed to be significantly up-regulated (P < 0.01). Furthermore, a significant decrease in glucose (P < 0.05), threonine (P < 0.05), tyrosine (P < 0.01) and phenylalanine (P < 0.0001) was observed in women with dormant GTB. Pearson's correlation analysis between the expression of various endometrial receptivity markers and metabolites showed a significant negative correlation (-0.236 to -0.545, P < 0.05). Also, the metabolites were positively correlated with endometrial receptivity markers (0.207 to 0.618, P < 0.05). LIMITATIONS, REASONS FOR CAUTION: It is often difficult to diagnose dormant GTB because it tends to exist without any clinical signs or symptoms. In addition, the diagnosis of GTB by culture remains a challenge due to low detection rates and its paucibacillary nature. Testing for prostate-specific antigen or the Y chromosome in order to account for the possible influences of recent exposure to semen on endometrial metabolism would be important. WIDER IMPLICATIONS OF THE FINDINGS: The metabolic changes associated with the dormant tubercle infection are of potential relevance to clinicians for the treatment of dormant GTB-related infertility. STUDY FUNDING/COMPETING INTERESTS: Government of India, Indian Council of Medical Research. There are no conflicts of interest.


Assuntos
Infecções Assintomáticas , Endométrio/metabolismo , Interações Hospedeiro-Patógeno , Metabolômica/métodos , Mycobacterium tuberculosis/fisiologia , Tuberculose dos Genitais Femininos/metabolismo , Adulto , Aminoácidos/biossíntese , Biomarcadores/metabolismo , Biópsia , Endométrio/microbiologia , Endométrio/patologia , Metabolismo Energético , Feminino , Humanos , Índia , Infertilidade Feminina/etiologia , Mycobacterium tuberculosis/isolamento & purificação , Ressonância Magnética Nuclear Biomolecular , Centros de Atenção Terciária , Tuberculose dos Genitais Femininos/microbiologia , Tuberculose dos Genitais Femininos/patologia , Tuberculose dos Genitais Femininos/fisiopatologia
15.
Kathmandu Univ Med J (KUMJ) ; 14(56): 322-327, 2016.
Artigo em Inglês | MEDLINE | ID: mdl-29336419

RESUMO

Background Lesions of the sinonasal area are varied, but they mostly present as polypoid masses which require meticulous work-up to reach at the most probable diagnosis. Objective Analysis of polypoid sinonasal masses in terms of etiology, clinical presentations, brief demographic profile, clinico-histologic correlate where possible, and follow-up results. Method In this descriptive, longitudinal study, 198 patients with polypoid sinonasal masses attending the otolaryngology clinic of a tertiary teaching institute were selected using proper selection criteria and analyzed through a pre-set proforma and algorithm for a diagnostic work-up (that included histopathology where necessary). Result Common presentations were nasal obstruction (~89%), discharge (~70%) and hyposmia (~22%). Though nearly 87% was clinically benign and 8% indeterminate, therapeutic and diagnostic interventions (including histopathology) showed 91% truly benign, of which polyposis formed the bulk. Sensitivity of clinical detection was 75% for benign lesions and 62% for malignancies. Diagnosis depended on histopathology in 52.52% cases, including the clinically malignant, the "grey zone", and more than 40% of the clinically benign lesions. There was male predilection (2.16 for benign lesions and 1.57 for malignant), rural preponderance, and above 60% of the patients were within 50-70 years. There was ~26% recurrence in the follow-up period of a minimum of one year, predominantly in polyposis (29.55%) and malignancies (~39%). Conclusion Presentations of polypoid sinonasal masses are variable, etiology of which is mostly benign. Proper clinico-histologic correlate is necessary for correct diagnosis. A low threshold of suspicion is required because of this variability, necessitating follow-up for further evaluation.


Assuntos
Pólipos Nasais/diagnóstico , Pólipos Nasais/patologia , Neoplasias Nasofaríngeas/diagnóstico , Neoplasias Nasofaríngeas/patologia , Adulto , Idoso , Feminino , Humanos , Estudos Longitudinais , Masculino , Pessoa de Meia-Idade , Obstrução Nasal/patologia , Sensibilidade e Especificidade , Centros de Atenção Terciária
16.
J Virol Methods ; 221: 15-21, 2015 Sep 01.
Artigo em Inglês | MEDLINE | ID: mdl-25907471

RESUMO

Soybean plants that exhibited symptoms of virus infection were sampled from different counties of Oklahoma. These plants were tested serologically for 15 viruses known to infect soybean plants. Fifty-seven samples that exhibited typical virus-like symptoms did not test positive for any of the 15 viruses used in a dot-immunobinding assay (DIBA). Four samples were pooled and used for next generation sequencing using the 454-Roche protocol. Sequence and phylogenetic analysis of the sequences obtained revealed infection with a distinct strain of Tobacco streak virus (TSV). TSV was one of the 15 viruses initially tested for using DIBA and had tested negative. TSV belongs to the genus Ilarvirus and has been reported as a causal agent of bud blight in soybean crops in Brazil and the United States. Out of 10 reported primer pairs for TSV reverse transcription-polymerase chain reaction (RT-PCR), only two had the potential, based on sequence similarity, to amplify part of the genome of the distinct strain of TSV found in Oklahoma and only one was actually able to amplify the region. In this study, a new primer pair, specific to all known TSV and capable of amplifying the Oklahoma strain (TSV-OK), was designed from a highly conserved region of coat protein (CP) sequences and end-point PCR and quantitative RT-PCR detection methods were developed and their sensitivity assayed. This is the first report of specific primers designed from this highly conserved region in the CP of TSV for detection of TSV. Twenty-three of the 57 DIBA soybean samples that initially tested negative were retested with the new specific end-point PCR method and found positive for TSV infection.


Assuntos
Ilarvirus/classificação , Ilarvirus/isolamento & purificação , Análise por Conglomerados , Primers do DNA/genética , Oklahoma , Filogenia , Doenças das Plantas/virologia , Reação em Cadeia da Polimerase/métodos , RNA Viral/genética , Análise de Sequência de DNA , Homologia de Sequência , Virologia/métodos
17.
Vaccine ; 32(15): 1754-60, 2014 Mar 26.
Artigo em Inglês | MEDLINE | ID: mdl-24522159

RESUMO

Live oral monovalent Shigella flexneri 2a vaccine candidates as well as bivalent formulations with Shigella sonnei were evaluated in a rhesus monkey model for colonization and immunogenicity. Freshly harvested suspensions of S. flexneri 2a vaccine candidates WRSf2G12 and WRSf2G15 as well as S. sonnei vaccine candidate WRSs3 were nasogastrically administered to groups of rhesus monkeys, Macaca mulatta, either in a monovalent form or when combined with each other. The animals were monitored daily for physical well-being, stools were subjected to quantitative colony immunoblot assays for bacterial excretion and blood and stools were evaluated for humoral and mucosal immune responses. No clinical symptoms were noted in any group of animals and the vaccine candidates were excreted robustly for 48-72h without significant changes in either the magnitude or duration of excretion when given as a monovalent or as bivalent mixtures. Similarly, immunological interferences were not apparent in the magnitude of humoral and mucosal immune responses observed toward Shigella-specific antigens when monkeys were fed monovalent or bivalent formulations. These results predict that a multivalent live oral vaccine of more than one serotype can have a favorable outcome for protection against shigellosis.


Assuntos
Vacinas contra Shigella/imunologia , Shigella flexneri/imunologia , Shigella sonnei/imunologia , Administração Oral , Animais , Anticorpos Antibacterianos/sangue , Derrame de Bactérias , Fezes/microbiologia , Imunidade Humoral , Imunidade nas Mucosas , Macaca mulatta , Masculino , Sorotipagem , Vacinas contra Shigella/administração & dosagem , Shigella flexneri/classificação , Shigella sonnei/classificação
18.
Singapore Med J ; 55(6): e96-100, 2014 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-24442190

RESUMO

Nonosseous or soft tissue Ewing's sarcoma is a rare form of Ewing's sarcoma/primitive neuroectodermal tumour that seldom affects the head and neck region. Involvement of the nose and paranasal sinuses is extremely uncommon, with only eight of such patients being reported to date, mostly affecting adolescents and young adults. To our knowledge, this study is the first comprehensive report of primary soft tissue Ewing's sarcoma involving the paranasal sinuses in an elderly patient who successfully completed treatment. We herein discuss the pathogenesis, management and factors affecting the prognosis of this rare group of tumours involving the nose and paranasal sinuses, in relation to the available literature.


Assuntos
Neoplasias do Seio Maxilar/diagnóstico , Sarcoma de Ewing/diagnóstico , Neoplasias de Tecidos Moles/diagnóstico , Idoso , Biópsia , Humanos , Masculino , Seio Maxilar/patologia , Neoplasias do Seio Maxilar/diagnóstico por imagem , Neoplasias do Seio Maxilar/terapia , Sarcoma de Ewing/diagnóstico por imagem , Sarcoma de Ewing/terapia , Neoplasias de Tecidos Moles/diagnóstico por imagem , Neoplasias de Tecidos Moles/terapia , Tomografia Computadorizada por Raios X
19.
Indian J Virol ; 24(1): 74-7, 2013 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-24426262

RESUMO

An evaluation of 70 accessions of ash gourd germplasm grown at National Bureau of Plant Genetic Resources, New Delhi, India during Kharif season (2010) showed natural occurrence of a yellow stunt disease in three accessions (IC554690, IC036330 and Pusa Ujjwal). A set of begomovirus specific primers used in PCR gave expected amplicon from all the symptomatic plants; however no betasatellite was detected. Complete genome of the begomovirus (DNA-A and DNA-B), amplified through rolling circle amplification, was cloned and sequenced. The begomovirus under study shared high sequence identities to different isolates of Tomato leaf curl New Delhi virus (ToLCNDV) and clustered with them. Among those isolates, the DNA-A and DNA-B of the present begomovirus isolate showed highest 99.6 and 96.8 % sequence identities, respectively with an isolate reported on pumpkin from India (DNA-A: AM286433, DNA-B: AM286435). Based on the sequence analysis, the begomovirus obtained from ash gourd was considered as an isolate of ToLCNDV. Thus, the present findings constitute the first report of occurrence of a new yellow stunt disease in ash gourd from India and demonstrated the association of ToLCNDV with the symptomatic samples. Occurrence of ToLCNDV in ash gourd germplasm not only adds up a new cucurbitaceous host of this virus but also raises the concern about the perpetuation of this virus in absence of its main host tomato and thus has an epidemiological relevance for understanding the rapid spread of this virus in tomato and other hosts in Indian sub-continent.

20.
J Assoc Physicians India ; 61(5): 320-4, 2013 May.
Artigo em Inglês | MEDLINE | ID: mdl-24482945

RESUMO

OBJECTIVES: Adrenal insufficiency is often diagnosed by short synacthen test using intravenous Injection Synacthene, which is not marketed in India officially. To overcome this problem this study was planned to validate and use Acton Prolongatum (Ferring pharmaceuticals) as intramuscular ACTH stimulation test for evaluation of adrenal function. METHODS: This study was planned in two groups. First group called validation group, was studied for validation of intramuscular ACTH test and second group called study group, was evaluated for efficacy of intramuscular ACTH test to detect adrenal insufficiency. Twenty five units of ACTH (Acton Prolongatum) was injected intramuscularly and blood sample was collected after 60 minutes for estimation of cortisol. All subjects with one hour post ACTH cortisol < 18.0 microg/dl were diagnosed as having adrenal insufficiency. RESULTS: This study was carried out in 61 subjects in validation group and 89 patients in study group. Basal and post ACTH serum cortisol were within normal range in healthy adults, patients with diabetes mellitus and primary hypothyroidism in validation group. Basal cortisol ranged from 4.67-18.39 microg/dl and post ACTH serum cortisol ranged from 20.01-44.95 microg/dl in these groups. Patients with known adrenal insufficiency had significantly low basal cortisol level than controls (2.86 +/- 2.66 vs. 10.35 +/- 4.37 microg/dl, p < 0.001), and post ACTH serum cortisol was < 18.0 microg/dl in all. Among study group 37 patients (41.6%) were diagnosed as adrenal insufficiency using post ACTH cortisol levels. Basal cortisol (< 3.0 microg/dl) could detect only 60% of these patients. Basal cortisol level has sensitivity of 60% and specificity of 100% to detect AI when compared to ACTH stimulated cortisol levels. CONCLUSION: Intramuscular ACTH test using Acton Prolongatum is effective in evaluation of adrenal function in all suspected cases of primary or secondary adrenal insufficiency. Basal cortisol has poor sensitivity to diagnose AI.


Assuntos
Testes de Função do Córtex Suprarrenal , Insuficiência Adrenal/diagnóstico , Hormônio Adrenocorticotrópico , Insuficiência Adrenal/sangue , Hormônio Adrenocorticotrópico/administração & dosagem , Adulto , Diabetes Mellitus Tipo 2/sangue , Feminino , Humanos , Hidrocortisona/sangue , Hipotireoidismo/sangue , Índia , Injeções Intramusculares , Masculino , Pessoa de Meia-Idade , Valor Preditivo dos Testes , Reprodutibilidade dos Testes , Adulto Jovem
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