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1.
Osteoporos Int ; 32(7): 1249-1275, 2021 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-33502559

RESUMO

Guidelines for doctors managing osteoporosis in the Asia-Pacific region vary widely. We compared 18 guidelines for similarities and differences in five key areas. We then used a structured consensus process to develop clinical standards of care for the diagnosis and management of osteoporosis and for improving the quality of care. PURPOSE: Minimum clinical standards for assessment and management of osteoporosis are needed in the Asia-Pacific (AP) region to inform clinical practice guidelines (CPGs) and to improve osteoporosis care. We present the framework of these clinical standards and describe its development. METHODS: We conducted a structured comparative analysis of existing CPGs in the AP region using a "5IQ" model (identification, investigation, information, intervention, integration, and quality). One-hundred data elements were extracted from each guideline. We then employed a four-round Delphi consensus process to structure the framework, identify key components of guidance, and develop clinical care standards. RESULTS: Eighteen guidelines were included. The 5IQ analysis demonstrated marked heterogeneity, notably in guidance on risk factors, the use of biochemical markers, self-care information for patients, indications for osteoporosis treatment, use of fracture risk assessment tools, and protocols for monitoring treatment. There was minimal guidance on long-term management plans or on strategies and systems for clinical quality improvement. Twenty-nine APCO members participated in the Delphi process, resulting in consensus on 16 clinical standards, with levels of attainment defined for those on identification and investigation of fragility fractures, vertebral fracture assessment, and inclusion of quality metrics in guidelines. CONCLUSION: The 5IQ analysis confirmed previous anecdotal observations of marked heterogeneity of osteoporosis clinical guidelines in the AP region. The Framework provides practical, clear, and feasible recommendations for osteoporosis care and can be adapted for use in other such vastly diverse regions. Implementation of the standards is expected to significantly lessen the global burden of osteoporosis.


Assuntos
Osteoporose , Fraturas da Coluna Vertebral , Ásia/epidemiologia , Humanos , Programas de Rastreamento , Osteoporose/diagnóstico , Osteoporose/epidemiologia , Osteoporose/terapia , Padrão de Cuidado
2.
J Neurophysiol ; 117(2): 705-712, 2017 02 01.
Artigo em Inglês | MEDLINE | ID: mdl-27852729

RESUMO

The wing membrane of the big brown bat (Eptesicus fuscus) is covered by a sparse grid of microscopic hairs. We showed previously that various tactile receptors (e.g., lanceolate endings and Merkel cell neurite complexes) are associated with wing-hair follicles. Furthermore, we found that depilation of these hairs decreased the maneuverability of bats in flight. In the present study, we investigated whether somatosensory signals arising from the hairs carry information about airflow parameters. Neural responses to calibrated air puffs on the wing were recorded from primary somatosensory cortex of E. fuscus Single units showed sparse, phasic, and consistently timed spikes that were insensitive to air-puff duration and magnitude. The neurons discriminated airflow from different directions, and a majority responded with highest firing rates to reverse airflow from the trailing toward the leading edge of the dorsal wing. Reverse airflow, caused by vortices, occurs commonly in slowly flying bats. Hence, the present findings suggest that cortical neurons are specialized to monitor reverse airflow, indicating laminar airflow disruption (vorticity) that potentially destabilizes flight and leads to stall. NEW & NOTEWORTHY: Bat wings are adaptive airfoils that enable demanding flight maneuvers. The bat wing is sparsely covered with sensory hairs, and wing-hair removal results in reduced flight maneuverability. Here, we report for the first time single-neuron responses recorded from primary somatosensory cortex to airflow stimulation that varied in amplitude, duration, and direction. The neurons show high sensitivity to the directionality of airflow and might act as stall detectors.


Assuntos
Quirópteros/fisiologia , Voo Animal/fisiologia , Cabelo/fisiologia , Células Receptoras Sensoriais/fisiologia , Córtex Somatossensorial/citologia , Percepção do Tato/fisiologia , Asas de Animais/fisiologia , Potenciais de Ação/fisiologia , Animais , Cabelo/ultraestrutura , Microscopia Eletrônica de Varredura , Estimulação Física , Células Receptoras Sensoriais/ultraestrutura , Tato , Asas de Animais/ultraestrutura
3.
Epidemiol Infect ; 145(9): 1898-1909, 2017 07.
Artigo em Inglês | MEDLINE | ID: mdl-28367767

RESUMO

An outbreak of influenza A(H1N1)pdm09 was detected during the ongoing community-based surveillance of influenza-like illness (ILI). Among reported 119 influenza A(H1N1)pdm09 cases (59 cases in the year 2012 and 60 cases in 2015) in summer months, common clinical features were fever (100%), cough (90·7%), sore throat (85·7%), nasal discharge (48·7%), headache (55·5%), fatigue (18·5%), breathlessness (3·4%), and ear discharge (1·7%). Rise in ILI cases were negatively correlated with the seasonal factors such as relative humidity (Karl Pearson's correlation coefficient, i.e. r = -0·71 in the year 2012 and r = -0·44 in the year 2015), while rise in ILI cases were positively correlated with the temperature difference (r = 0·44 in the year 2012 and r = 0·77 in the year 2015). The effective reproduction number R, was estimated to be 1·30 in 2012 and 1·64 in 2015. The study highlights the rise in unusual influenza activity in summer month with high attack rate of ILI among children aged ⩽9 years. Children in this age group may need special attention for influenza vaccination. Influenza A(H1N1)pdm09 outbreak was confirmed in inter-seasonal months during the surveillance of ILI in Pune, India, 2012-2015.


Assuntos
Clima , Surtos de Doenças , Vírus da Influenza A Subtipo H1N1/fisiologia , Influenza Humana/epidemiologia , Influenza Humana/virologia , Oseltamivir/farmacologia , Adolescente , Adulto , Idoso , Idoso de 80 Anos ou mais , Antivirais/farmacologia , Criança , Pré-Escolar , Feminino , Hemaglutininas Virais/genética , Humanos , Índia/epidemiologia , Lactente , Recém-Nascido , Vírus da Influenza A Subtipo H1N1/classificação , Vírus da Influenza A Subtipo H1N1/imunologia , Masculino , Pessoa de Meia-Idade , Filogenia , RNA Viral/análise , Estações do Ano , Análise de Sequência de RNA , Adulto Jovem
4.
Am J Transplant ; 16(10): 3046-3048, 2016 10.
Artigo em Inglês | MEDLINE | ID: mdl-27224090

RESUMO

The number of simultaneous liver-kidney transplants has been increasing. This surgery is associated with an increased risk of complications, longer duration of surgery and longer ischemia time for the renal allograft. Two patients listed for liver-kidney transplant at our center underwent en bloc combined liver-kidney transplantation using donor splenic artery as inflow. Patient 1 previously underwent cardiac catheterization that was complicated by a bleeding pseudoaneurysm of the right external iliac artery that required endovascular stenting of the external iliac artery and embolization of the inferior epigastric artery. Patient 2 was on vasopressor support and continuous renal replacement therapy at the time of transplant. In this paper, we described a novel technique of en bloc liver-kidney transplant with simultaneous reperfusion of both allografts using the donor splenic artery for renal inflow. This technique is useful for decreasing cold ischemia time and total operative time by simultaneous reperfusion of both allografts. It is a useful technical variant that can be used in patients with severe disease of the iliac arteries.


Assuntos
Rejeição de Enxerto/prevenção & controle , Síndrome Hepatorrenal/cirurgia , Transplante de Rim/efeitos adversos , Transplante de Fígado/efeitos adversos , Artéria Esplênica , Doadores de Tecidos , Idoso , Anastomose Cirúrgica , Cateterismo Cardíaco/efeitos adversos , Feminino , Rejeição de Enxerto/etiologia , Sobrevivência de Enxerto , Humanos , Masculino , Pessoa de Meia-Idade , Prognóstico , Transplante Homólogo
5.
Ann Oncol ; 27(10): 1928-40, 2016 10.
Artigo em Inglês | MEDLINE | ID: mdl-27672108

RESUMO

BACKGROUND: To evaluate the safety, tolerability, pharmacokinetics, and maximum tolerated dose (MTD) of copanlisib, a phosphatidylinositol 3-kinase inhibitor, in patients with advanced solid tumors or non-Hodgkin's lymphoma (NHL). PATIENTS AND METHODS: Phase I dose-escalation study including patients with advanced solid tumors or NHL, and a cohort of patients with type 2 diabetes mellitus. Patients received three weekly intravenous infusions of copanlisib per 28-day cycle over the dose range 0.1-1.2 mg/kg. Plasma copanlisib levels were analyzed for pharmacokinetics. Biomarker analysis included PIK3CA, KRAS, BRAF, and PTEN mutational status and PTEN immunohistochemistry. Whole-body [(18)F]-fluorodeoxyglucose positron emission tomography ((18)FDG-PET) was carried out at baseline and following the first dose to assess early pharmacodynamic effects. Plasma glucose and insulin levels were evaluated serially. RESULTS: Fifty-seven patients received treatment. The MTD was 0.8 mg/kg copanlisib. The most frequent treatment-related adverse events were nausea and transient hyperglycemia. Copanlisib exposure was dose-proportional with no accumulation; peak exposure positively correlated with transient hyperglycemia post-infusion. Sixteen of 20 patients treated at the MTD had reduced (18)FDG-PET uptake; 7 (33%) had a reduction >25%. One patient achieved a complete response (CR; endometrial carcinoma exhibiting both PIK3CA and PTEN mutations and complete PTEN loss) and two had a partial response (PR; both metastatic breast cancer). Among the nine NHL patients, all six with follicular lymphoma (FL) responded (one CR and five PRs) and one patient with diffuse large B-cell lymphoma had a PR by investigator assessment; two patients with FL who achieved CR (per post hoc independent radiologic review) were on treatment >3 years. CONCLUSION: Copanlisib, dosed intermittently on days 1, 8, and 15 of a 28-day cycle, was well tolerated and the MTD was determined to be 0.8 mg/kg. Copanlisib exhibited dose-proportional pharmacokinetics and promising anti-tumor activity, particularly in patients with NHL. CLINICALTRIALSGOV: NCT00962611; https://clinicaltrials.gov/ct2/show/NCT00962611.


Assuntos
Classe I de Fosfatidilinositol 3-Quinases/antagonistas & inibidores , Inibidores Enzimáticos/administração & dosagem , Linfoma não Hodgkin/tratamento farmacológico , Neoplasias/tratamento farmacológico , Pirimidinas/administração & dosagem , Quinazolinas/administração & dosagem , Administração Intravenosa , Adulto , Idoso , Classe I de Fosfatidilinositol 3-Quinases/genética , Relação Dose-Resposta a Droga , Inibidores Enzimáticos/efeitos adversos , Inibidores Enzimáticos/farmacocinética , Feminino , Humanos , Linfoma não Hodgkin/enzimologia , Linfoma não Hodgkin/patologia , Masculino , Pessoa de Meia-Idade , Estadiamento de Neoplasias , Neoplasias/enzimologia , Neoplasias/patologia , Pirimidinas/efeitos adversos , Pirimidinas/farmacocinética , Quinazolinas/efeitos adversos , Quinazolinas/farmacocinética
7.
Indian J Med Res ; 140(2): 244-51, 2014 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-25297358

RESUMO

BACKGROUND & OBJECTIVES: Recent influenza antiviral resistance studies in South East Asia, Europe and the United States reveal adamantane and neuraminidase inhibitor (NAIs) resistance. This study was undertaken to evaluate antiviral resistance in influenza viruses isolated from various parts of India, during 2004 to 2011. METHODS: Influenza viruses were analyzed genetically for known resistance markers by M2 and NA gene sequencing. Influenza A/H1N1 (n=206), A/H3N2 (n=371) viruses for amantadine resistance and A/H1N1 (n=206), A/H3N2 (n=272) and type B (n=326) for oseltamivir resistance were sequenced. Pandemic (H1N1) (n=493) isolates were tested for H274Y mutation by real time reverse transcription (rRT)-PCR. Randomly selected resistant and sensitive influenza A/H1N1 and A/H3N2 viruses were confirmed by phenotypic assay. RESULTS: Serine to asparagine (S3IN) mutation was detected in six isolates of 2007-2008. One dual-resistant A/H1N1 was detected for the first time in India with leucine to phenylalanine (L26F) mutation in M2 gene and H274Y mutation in NA gene. A/H3N2 viruses showed an increase in resistance to amantadine from 22.5 per cent in 2005 to 100 per cent in 2008 onwards with S3IN mutation. Fifty of the 61 (82%) A/H1N1 viruses tested in 2008-2009 were oseltamivir resistant with H274Y mutation, while all A/H3N2, pandemic A/H1N1 and type B isolates remained sensitive. Genetic results were also confirmed by phenotypic analysis of randomly selected 50 resistant A/H1N1 and 40 sensitive A/H3N2 isolates. INTERPRETATION & CONCLUSIONS: Emergence of influenza viruses resistant to amantadine and oseltamivir in spite of negligible usage of antivirals emphasizes the need for continuous monitoring of antiviral resistance.


Assuntos
Farmacorresistência Viral/genética , Vírus da Influenza A Subtipo H1N1/genética , Vírus da Influenza A Subtipo H3N2/genética , Vírus da Influenza B/genética , Amantadina , Sequência de Bases , Análise por Conglomerados , Marcadores Genéticos/genética , Humanos , Índia , Modelos Genéticos , Dados de Sequência Molecular , Mutação de Sentido Incorreto , Oseltamivir , Filogenia , Reação em Cadeia da Polimerase em Tempo Real , Reação em Cadeia da Polimerase Via Transcriptase Reversa , Análise de Sequência de DNA
8.
Gynecol Oncol Rep ; 52: 101362, 2024 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-38495799

RESUMO

Locally advanced cancer of the vulva (LACV) is commonly diagnosed in older women (>65 years), and is treated using combined multimodality therapy (CMT) that includes radiation therapy (RT). Compliance to optimal RT metrics, including completion of > 20 fractions, overall treatment duration of < 8 weeks (56 days), and < 1 week intra-treatment break is associated with better disease outcomes. However, published results note that a significant number of patients with LACV do not adhere to these metrics. The aim of our study is to evaluate whether a modified sequence of RT delivery, treating the localized boost volume upfront followed by the larger elective nodal volume is associated with improved compliance to optimal RT delivery metrics.

9.
Arch Osteoporos ; 19(1): 48, 2024 Jun 11.
Artigo em Inglês | MEDLINE | ID: mdl-38862849

RESUMO

This pilot audit explored how bone health is assessed patients with diabetes in diverse centres across Asia. Only 343 of 1092 (31%) audited patients had a bone health assessment, 27% of whom were diagnosed with osteoporosis. Quality improvement strategies are needed to address gaps in patient care in this area. PURPOSE: The Asia Pacific Consortium on Osteoporosis (APCO) Framework outlines clinical standards for assessing and managing osteoporosis. A pilot audit evaluated adherence to clinical standard 4, which states that bone health should be assessed in patients with conditions associated with bone loss and/or increased fracture risk; this report summarises the audit findings in patients with diabetes. A secondary aim was to assess the practicality and real-world use of the APCO bone health audit tool kit. METHODS: Eight centres across Asia participated in the pilot audit, selecting diabetes as the target group. Participants reviewed their practice records for at least 20 consecutively treated patients with the target condition. Questions covered routine investigations, bone health assessment, osteoporosis diagnosis, and patient referral pathways. Data were summarised descriptively. RESULTS: The participants represented public hospitals, university medical centres, and private clinics from India, Malaysia, Pakistan, Singapore, Taiwan, and Vietnam that see an estimated total of 95,000 patients with diabetes per year. Overall, only 343 of 1092 audited patients (31%) had a bone health assessment. Osteoporosis was subsequently diagnosed in 92 of 343 (27%) patients. CONCLUSION: Bone health was not assessed in most patients with diabetes. The results provide insight into current practices across diverse Asian centres and demonstrate the practical value of the audit tool kit. Participant feedback has been used to improve the tool kit. Results of this pilot audit are being used in the respective centres to inform quality improvement projects needed to overcome the gap in patient care.


Assuntos
Fidelidade a Diretrizes , Osteoporose , Humanos , Projetos Piloto , Osteoporose/epidemiologia , Feminino , Masculino , Ásia/epidemiologia , Fidelidade a Diretrizes/estatística & dados numéricos , Pessoa de Meia-Idade , Idoso , Auditoria Médica , Diabetes Mellitus/epidemiologia , Diabetes Mellitus/terapia , Densidade Óssea
10.
NPJ Breast Cancer ; 9(1): 99, 2023 Dec 14.
Artigo em Inglês | MEDLINE | ID: mdl-38097623

RESUMO

Older women are under-represented in breast cancer (BC) clinical trials, and treatment guidelines are primarily based on BC studies in younger women. Studies uniformly report an increased incidence of local relapse with omission of breast radiation therapy. Review of the available literature suggests very low rates of distant relapse in women ≥70 years of age. The incremental benefit of endocrine therapy in decreasing rate of distant relapse and improving disease-free survival in older patients with low-risk BC remains unclear. Integration of molecular genomic assays in diagnosis and treatment of estrogen receptor positive BC presents an opportunity for optimizing risk-tailored adjuvant therapies in ways that may permit treatment de-escalation among older women with early-stage BC. The prevailing knowledge gap and lack of risk-specific adjuvant therapy guidelines suggests a compelling need for prospective trials to inform selection of optimal adjuvant therapy, including omission of adjuvant endocrine therapy in older women with low risk BC.

11.
Indian Heart J ; 64(5): 503-7, 2012.
Artigo em Inglês | MEDLINE | ID: mdl-23102390

RESUMO

INTRODUCTION: Sudden cardiac death (SCD) is the most lethal manifestation of heart disease. In an Indian study the SCDs contribute about 10% of the total mortality and SCD post ST elevation myocardial infarction (MI) constitutes for about half of total deaths. OBJECTIVE: Given the limitations of existing therapy there is a need for an effective, easy to use, broadly applicable and affordable intervention to prevent SCD post MI. Leading cardiologists from all over India came together to discuss the potential role of n-3 acid ethyl esters (90%) of eicosapentaenoic acid (EPA) 460 mg & docosahexaenoic acid (DHA) 380 mg in the management of post MI patients and those with hypertriglyceridemia. RECOMMENDATIONS: Highly purified & concentrated omega-3 ethyl esters (90%) of EPA (460 mg) & DHA (380 mg) has clinically proven benefits in improving post MI outcomes (significant 15% risk reduction for all-cause mortality, 20% risk reduction for CVD and 45% risk reduction in SCD in GISSI-Prevenzione trial) and in reducing hypertriglyceridemia, and hence, represent an interesting option adding to the treatment armamentarium in the secondary prevention after MI based on its anti-arrhythmogenic effects and also in reducing hypertriglyceridemia.


Assuntos
Antiarrítmicos/uso terapêutico , Morte Súbita Cardíaca/prevenção & controle , Ácidos Docosa-Hexaenoicos/uso terapêutico , Ácido Eicosapentaenoico/uso terapêutico , Hipertrigliceridemia/tratamento farmacológico , Hipolipemiantes/uso terapêutico , Infarto do Miocárdio/prevenção & controle , Serviços Preventivos de Saúde , Consenso , Morte Súbita Cardíaca/etiologia , Combinação de Medicamentos , Humanos , Hipertrigliceridemia/complicações , Hipertrigliceridemia/mortalidade , Índia/epidemiologia , Infarto do Miocárdio/etiologia , Infarto do Miocárdio/mortalidade , Medição de Risco , Fatores de Risco , Resultado do Tratamento
12.
J Viral Hepat ; 18(10): e415-22, 2011 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-21914058

RESUMO

An explosive outbreak of Hepatitis B with high mortality was reported in 2009, in Modasa, Gujarat, India. Mortality was associated with basal core promoter and precore mutant hepatitis B virus (HBV). The current study addresses the role of immunological parameters in the progression to fulminant hepatitis. The study population comprised of 22 acute HBV patients, 13 fulminant HBV liver failure patients and 54 healthy controls. Hepatitis B surface antigen-induced CTL responses by enzyme-linked immunosorbent spot (ELISPOT), cytokine and chemokine quantitation by Bioplex assay, peripheral NK, natural killer T (NKT), CD4 and CD8 T-cell frequencies by flow cytometry were carried out. The median percentage of NK cells in the lymphocytes of the acute and fulminant liver failure patients were significantly lower compared to controls. Acute and fulminant liver failure patients had significantly high and comparable NKT cells compared to controls, respectively. Importantly, NKT cells were significantly lower in fulminant HBV liver failure than acute HBV patients. Circulating peripheral CD4/CD8 T-cell subsets among the patient categories and controls were comparable. In acute HBV patients, a significant increase in IFN-γ release was recorded (ELISPOT) by the unstimulated, antigen-stimulated and mitogen-stimulated cells when compared to controls. Comparisons of cytokines and chemokines among the disease categories revealed significantly lower levels of CCL4 in fulminant liver failure patients. NKT cells and CCL4 might be playing a pivotal role in limiting HBV infection among the patients investigated.


Assuntos
Quimiocina CCL4/imunologia , Surtos de Doenças , Vírus da Hepatite B/imunologia , Vírus da Hepatite B/patogenicidade , Hepatite B/epidemiologia , Células T Matadoras Naturais/imunologia , Adolescente , Adulto , Citocinas/metabolismo , Feminino , Hepatite B/complicações , Hepatite B/mortalidade , Hepatite B/virologia , Antígenos do Núcleo do Vírus da Hepatite B/genética , Vírus da Hepatite B/genética , Humanos , Índia/epidemiologia , Falência Hepática , Subpopulações de Linfócitos/imunologia , Masculino , Pessoa de Meia-Idade , Mutação , Regiões Promotoras Genéticas , Adulto Jovem
13.
J Viral Hepat ; 18(4): e20-8, 2011 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-21108697

RESUMO

In 2009, an outbreak of hepatitis B with high mortality was observed in Sabarkantha district, Gujarat state, India with 456 cases and 89 deaths. Hospitalized patients with self-limiting disease (152, AVH)) and fulminant hepatic failure (39, FHF including 27 fatal and 12 survivals) were investigated. These were screened for diagnostic markers for hepatitis viruses, hepatitis B virus (HBV) genotyping and mutant analysis. Complete HBV genomes from 22 FHF and 17 AVH cases were sequenced. Serosurveys were carried out in the most and least affected blocks for the prevalence of HBV and identification of mutants. History of injection from a physician was associated with FHF and AVH cases. Co-infection with other hepatitis viruses or higher HBV DNA load was not responsible for mortality. Four blocks contributed to 85.7% (391/456) of the cases and 95.5% (85/89) mortality while two adjacent blocks had negligible mortality. Sequence analysis showed the presence of pre-core and basal core promoter mutants and 4 amino acid substitutions exclusively among FHF cases. None of the self-limiting patients exhibited these dual mutations. Genotype D was predominant, D1 being present in all FHF cases while D2 was most prevalent in AVH cases. Probably due to violation of accepted infection control procedures by the qualified medical practitioners, HBV prevalence was higher in the affected blocks before the outbreak. Gross and continued use of HBV contaminated (mutant and wild viruses) injection devices led to an explosive outbreak with high mortality with a striking association with pre-C/BCP mutants and D1 genotype.


Assuntos
Infecção Hospitalar/epidemiologia , Infecção Hospitalar/mortalidade , Surtos de Doenças , Hepatite B/epidemiologia , Hepatite B/mortalidade , Doença Iatrogênica/epidemiologia , Adolescente , Adulto , Idoso , Idoso de 80 Anos ou mais , Criança , Pré-Escolar , DNA Viral/química , DNA Viral/genética , Feminino , Antígenos do Núcleo do Vírus da Hepatite B/genética , Vírus da Hepatite B/genética , Vírus da Hepatite B/isolamento & purificação , Hospitais , Humanos , Índia/epidemiologia , Lactente , Masculino , Pessoa de Meia-Idade , Epidemiologia Molecular , Dados de Sequência Molecular , Regiões Promotoras Genéticas , Análise de Sequência de DNA , Seringas/virologia , Adulto Jovem
14.
Artigo em Inglês | MEDLINE | ID: mdl-20878405

RESUMO

Bats are the only mammals capable of true powered flight. The bat wing exhibits specializations, allowing these animals to perform complicated flight maneuvers like landing upside-down, and hovering. The wing membrane contains various tactile receptors, including hair-associated Merkel receptors that might be involved in stabilizing bat flight. Here, we studied the neuronal representation of the wing membrane in the primary somatosensory cortex (S1) of the anesthetized Big Brown Bat, Eptesicus fuscus, using tactile stimulation with calibrated monofilaments (von Frey hairs) while recording from multi-neuron clusters. We also measured cortical response thresholds to tactile stimulation of the wings.The body surface is mapped topographically across the surface of S1, with the head, foot, and wing being overrepresented. The orientation of the wing representation is rotated compared to the hand representaion of terrestrial mammals, confirming results from other bat species. Although different wing membrane parts derive embryologically from different body parts, including the flank (plagiopatagium), the tactile sensitivity of the entire flight membrane (0.2-1.2 mN) is remarkably close or even higher (dactylopatagium) than the average tactile sensitivity of the human fingertip.


Assuntos
Quirópteros/anatomia & histologia , Quirópteros/fisiologia , Córtex Somatossensorial/fisiologia , Asas de Animais/inervação , Asas de Animais/fisiologia , Potenciais de Ação/fisiologia , Vias Aferentes/fisiologia , Animais , Feminino , Masculino , Neurônios/fisiologia , Estimulação Física/métodos , Córtex Somatossensorial/citologia , Tato/fisiologia , Asas de Animais/citologia
15.
Science ; 161(3846): 1145, 1968 Sep 13.
Artigo em Inglês | MEDLINE | ID: mdl-17812289

RESUMO

Diosgenin and beta-sitosterol were isolated from Solanum xanthocarpum callus, crystallized, and chemically characterized. That these metabolites, particularly diosgenin, form in significant amounts in tissue culture may prove useful.

16.
Intervirology ; 52(2): 78-85, 2009.
Artigo em Inglês | MEDLINE | ID: mdl-19401616

RESUMO

OBJECTIVES: Hepatitis E virus (HEV) is the predominant cause of water-borne epidemics, sporadic acute viral hepatitis (AVH) in adults and fulminant hepatic failure (FHF) among pregnant women and other adults in India. This preliminary study was designed to examine the association of viral load and certain host immune responses with uneventful recovery or progression to FHF. METHODS: Viral load, anti-HEV antibody titers, rORF2p-induced Th1/Th2 cytokines levels and cellular immune responses were assessed in 47 patients with self-limiting hepatitis E and 14 FHF-E cases. The controls included 16 anti-HEV-IgM and IgG-negative healthy individuals. RESULTS: In AVH category, the viral load was 2.4 x 10(4) +/- 1.92 x 10(4) copies/ml while except for one, all FHF patients were negative for HEV RNA; anti-HEV-IgM and IgG titers were higher in the FHF group. Lymphocyte proliferative response to rORF2p was comparable in both groups. As compared to AVH, significantly higher levels of both Th1 (IFN-gamma, IL-2 and TNF-alpha) and Th2 (IL-10) cytokines were recorded in FHF patients. Analysis of sequential samples differentiated FHF recovered and fatal patients with respect to IFN-gamma and IL-12. CONCLUSION: The results document increased Th1/Th2 responses and anti-HEV titers in FHF patients that warrant in-depth immunological studies.


Assuntos
Citocinas/metabolismo , Anticorpos Anti-Hepatite/sangue , Vírus da Hepatite E/imunologia , Hepatite E/imunologia , Linfócitos/imunologia , Carga Viral , Proteínas Virais/imunologia , Adulto , Proliferação de Células , Feminino , Humanos , Índia , Masculino , Pessoa de Meia-Idade , Gravidez , Adulto Jovem
17.
J Assoc Physicians India ; 56: 418-24, 2008 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-18822620

RESUMO

BACKGROUND AND OBJECTIVE: Osteoporosis is emerging as a leading cause of substantial morbidity in India, particularly in postmenopausal women. Teriparatide (recombinant human parathyroid hormone [1-34]) increases bone formation and improves bone microarchitecture, thereby reducing the risk of fractures. This study was conducted to evaluate the efficacy of teriparatide in increasing bone mineral density (BMD) in postmenopausal women with osteoporosis. MATERIAL AND METHODS: A randomised, prospective, multicentre, open-label, controlled study was conducted on 82 postmenopausal women with established osteoporosis. Patients were randomly divided into control and teriparatide groups, each group consisting of 41 patients. All the patients were supplemented with 1000 mg of elemental calcium and 500 IU of vitamin D throughout the study period of 180 days. Besides, teriparatide group patients were administered teriparatide 20 microg daily subcutaneously. Lumbar spine, femoral neck and total hip BMD, bone mineral content (BMC) and bone area were measured by dual energy x-ray absorptiometry (DXA) at baseline and at the end of 6 months of treatment. Bone biomarkers, such as serum bone specific alkaline phosphatase (BSAP) and serum osteocalcin (OC), representing bone formation, and urinary deoxypyridinoline (DPD), representing bone resorption were assessed at baseline, and at 3 and 6 months of treatment. RESULTS: During the study period, 9 patients (11%) were lost to follow-up--6 in control group (7.3%) and 3 in teriparatide group (3.7%). There was an excellent compliance to both oral and injectable medication. The investigational product teriparatide was well tolerated and there were no serious adverse events. In addition, there were no significant differences between the groups in the incidence of adverse events. The percentage of increase in lumbar spine BMD, which is the primary endpoint, was significantly (P < 0.001) higher in teriparatide group compared to that in control group (6.58% vs. 1.06%). Further, teriparatide significantly increased percentage of change in lumbar spine T-score (P < 0.001), BMC (P < 0.001) and bone area (P < 0.028) compared to control group at 6 months. Administration of teriparatide resulted in a significant percentage of increase in all the bone biomarkers in teriparatide group compared to control group patients at 3 and 6 months over baseline, thereby showing that there was a significant increase in bone turnover in teriparatide group of patients. CONCLUSION: These results show that teriparatide is an effective and safe drug in increasing the BMD and therefore, teriparatide provides yet another new therapeutic option for reducing the risk management of osteoporosis in postmenopausal women (clinicaltrials.gov number, NCT00500409).


Assuntos
Conservadores da Densidade Óssea/administração & dosagem , Densidade Óssea , Osteoporose Pós-Menopausa/tratamento farmacológico , Osteoporose Pós-Menopausa/fisiopatologia , Teriparatida/administração & dosagem , Idoso , Reabsorção Óssea , Cálcio/administração & dosagem , Método Duplo-Cego , Feminino , Seguimentos , Humanos , Injeções Subcutâneas , Pessoa de Meia-Idade , Osteogênese , Estudos Prospectivos , Resultado do Tratamento , Vitamina D/administração & dosagem
18.
Virusdisease ; 29(4): 553-559, 2018 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-30539062

RESUMO

Scant data exist about the epidemiology of influenza B in India. We set out to address the epidemiology of influenza B in a temperate region of northern India from 2010 to 2016. Outpatient and inpatient surveillance was conducted in patients presenting with acute respiratory infection in a northern Indian hospital from September 2010 till April 2016. After recording clinical data, combined nasal/throat swabs were collected and tested for influenza viruses by real time RT-PCR. Influenza A viruses were further subtyped into A/H3N2 and A/H1N1 whereas influenza B were differentiated into B/Yamagata and B/Victoria. Virus isolation, haemaggglutination inhibition testing, sequencing and phylogenetic analysis was carried out on representative samples. Of the 6879 recruited cases, influenza B was detected in 299 (4.3%). The patients presented with respiratory symptoms of varying duration; cough, fever and nasal discharge being the most common. The peaking of the activity of the circulation showed a correlation with the onset of the winter with reduced temperatures and high dry humidity. B/Victoria lineage was detected in 35.4% (n = 106/299) whereas 53.8% (n = 161/299) were B/Yamagata. The circulation in each season was dominated by one lineage which correlated with the vaccine strain, but up to 37% consisted of a different lineage. We conclude that Influenza B exhibits a northern hemispherical seasonality in temperate northern India with co-circulation of the 2 lineages of influenza B. These findings have relevance for vaccine effectiveness and argue for vaccination with a quadrivalent influenza vaccine.

19.
Infect Genet Evol ; 54: 466-477, 2017 10.
Artigo em Inglês | MEDLINE | ID: mdl-28803969

RESUMO

Since 2003, India has had a well-established influenza surveillance network, though Influenza C virus was not the focus of study. We therefore retrospectively analyzed clinical samples from Pune, western India collected during January 2009 to August 2015, by real-time RT-PCR. Three of 2530 samples of patients with influenza-like illness (ILI) or severe acute respiratory illness (SARI) showed positivity for Influenza C virus infection, while 105 and 31 samples were positive for Influenza A and B viruses respectively. Influenza C viruses were successfully isolated using the embryonated egg system and whole genomes were sequenced and analyzed phylogenetically. HE gene-based phylogeny showed that two viruses C/India/P119564/2011 and C/India P121719/2012 clustered with the C/Sao Paulo/378/82 (SP82) lineage, whereas C/India/P135047/2013 clustered with the C/Kanagawa/1/76 (KA76) lineage. The internal gene of these viruses grouped in two lineages. The PB1, PB2, M and NS genes of the study viruses grouped with C/Yamagata/26/81 (YA81), while the P3 (PA) and NP genes grouped with C/Mississippi/80 (MS80). Bayesian clock studies conclude that the Indian strains may have emerged through multiple reassortment events.


Assuntos
Gammainfluenzavirus/genética , Gammainfluenzavirus/isolamento & purificação , Influenza Humana/epidemiologia , Análise de Sequência de RNA/métodos , Adolescente , Teorema de Bayes , Criança , Evolução Molecular , Genoma Viral , Humanos , Índia/epidemiologia , Influenza Humana/virologia , Filogenia , Reação em Cadeia da Polimerase em Tempo Real , Vírus Reordenados/genética , Estudos Retrospectivos
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