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Tuberculosis (TB) remains a major global public health problem worldwide. Though Pulmonary TB (PTB) is mostly discussed, one in five cases of TB present are extrapulmonary TB (EPTB) that manifests conspicuous diagnostic and management challenges with respect to the site of infection. The diagnosis of EPTB is often delayed or even missed due to insidious clinical presentation, pauci-bacillary nature of the disease, and lack of laboratory facilities in the resource limited settings. Culture, the classical gold standard for the diagnosis of tuberculosis, suffers from increased technical and logistical constraints in EPTB cases. Other than culture, several other tests are available but their feasibility and effciacy for the detection of EPTB is still the matter of interest. We need more specific and precise test/s for the various forms of EPTB diagnosis which can easily be applied in the routine TB control program is required. A test that can contribute remarkably towards improving EPTB case detection reducing the morbidity and mortality is the utmost requirement. In this review we described the scenario of molecular and other noval methods available for laboratory diagnosis of EPTB, and also discussed the challenges linked with each diagnostic method. This review will make the readers aware of new emerging diagnostic techniques in the field of EPTB diagnosis. They can make an informed decision to choose the appropriate one according to the test availability, their clinical settings and financial considerations.
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Tuberculosis Extrapulmonar , Tuberculosis Pulmonar , Tuberculosis , Humanos , Tuberculosis/diagnóstico , Tuberculosis Pulmonar/diagnóstico , MorbilidadRESUMEN
BACKGROUND: The worldwide increase in drug-resistant pulmonary TB (DR-PTB) has a significant impact on patient´s physical and mental health. The objective of this study is to assess the stress resilience of DR-PTB patients along with the factors associated with it.METHODS: A total of 385 adult DR-PTB patients with multidrug-resistant (MDR) and pre-extensive drug-resistant (pre-XDR) TB admitted to the National Institute of Diseases of the Chest Hospital (Dhaka, Bangladesh) between January 2020 and March 2021 were conveniently recruited. Resilience data were collected using a validated Stress Resilience Scale (RS 25) questionnaire.RESULTS: The mean resilience scores were significantly higher for patients with MDR-PTB than those with pre-XDR-PTB (P = 0.02). A majority of the MDR-PTB (77.0%) and pre-XDR-PTB (65.1%) patients belonged to the ≤45 years age group. Multiple linear regression revealed that sex (P < 0.001), level of education (P < 0.001), employment status (P = 0.003) and presence of asthma (P = 0.010) were significantly associated with stress resilience.CONCLUSION: We observed that stress resilience significantly differed between patients with MDR-PTB and those with pre-XDR-PTB based on sociodemographic characteristics.
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Tuberculosis Extensivamente Resistente a Drogas , Mycobacterium tuberculosis , Tuberculosis Resistente a Múltiples Medicamentos , Tuberculosis Pulmonar , Adulto , Humanos , Antituberculosos/uso terapéutico , Tuberculosis Resistente a Múltiples Medicamentos/tratamiento farmacológico , Tuberculosis Resistente a Múltiples Medicamentos/epidemiología , Bangladesh , Tuberculosis Extensivamente Resistente a Drogas/tratamiento farmacológico , Tuberculosis Pulmonar/tratamiento farmacológicoRESUMEN
Introduction: The objective of the study was to evaluate the clinical profile and outcome of patients with secondary hemophagocytic lymphohistiocytosis (HLH) in critically ill patients. Materials and methods: A prospective observational study was conducted where critically ill adult patients presenting with fever and bicytopenia were evaluated according to the HLH-2004 diagnostic criteria for the presence of secondary HLH. The underlying trigger, clinical profile, treatment, and outcome of patients with HLH were analyzed. Results: Of the 76 critically ill patients with fever and bicytopenia, 33 (43%) patients were diagnosed with HLH. The following triggers for HLH were identified: bacterial infections (23%), fungal infections (10%), viral infections (10%), parasitic infections (10%), autoimmune diseases (13%), and malignancy (8%). A total of 78% of the HLH cases received steroids, but the use of steroids was not associated with improvement in mortality. Conclusion: There is a high prevalence of HLH in patients presenting with fever and bicytopenia in critically ill adult patients. Infections were identified as the most common trigger of HLH. How to cite this article: Fazal F, Gupta N, Soneja M, Mitra DK, Satpathy G, Panda SK, et al. Clinical Profile, Treatment, and Outcome of Patients with Secondary Hemophagocytic Lymphohistiocytosis in Critically Ill Patients: A Prospective Observational Study. Indian J Crit Care Med 2022;26(5):564-567.
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BACKGROUND: Cell-mediated immunity plays an important role in host defence against fungal pathogens, regulated by differentiation of lymphocytes towards T-helper 1 or 2 cells. This study reports intracellular cytokine variation in terms of invasive fungal sinusitis type and outcome. METHODS: The mononuclear leukocytes of 15 patients with invasive fungal sinusitis (mucormycosis in 8, aspergillus in 7) were stained with antibodies against intracellular cytokines, after fungal antigen stimulation and culture, and immunophenotyped. Patients were followed up for six months, with clinical course categorised as improvement, worsening or death. RESULTS: The mean percentages of mononuclear cells producing interleukins 4, 5, 10 and 12, and interferon-γ, in the mucormycosis group were 0.575, 0.284, 8.661, 4.460 and 1.134, respectively, while percentages in the aspergillosis group were 0.233, 0.492, 4.196, 4.466 and 1.533. Cells producing interleukin 4 and 10 were higher in the mucormycosis group, while those producing interleukin-12 and interferon-γ were lower. Cells producing interleukins 4 and 12 were higher in patients with a poor outcome (p-values of 0.0662 and 0.0373, respectively), while those producing interferon-γ were lower (p = 0.0864). CONCLUSION: Adaptive cell-mediated immunity is expressed differently in two categories of invasive fungal sinusitis, and the cytokine expression pattern is related to prognosis.
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Infecciones Fúngicas Invasoras , Mucormicosis , Sinusitis , Citocinas , Humanos , Interferón gamma/metabolismo , Infecciones Fúngicas Invasoras/metabolismo , Mucormicosis/diagnóstico , Sinusitis/microbiología , Células TH1/metabolismoRESUMEN
BACKGROUND: Distinguishing between Crohn's Disease (CD) and Intestinal Tuberculosis (ITB) has been a challenging task for clinicians due to their similar presentation. CD4+FOXP3+ T regulatory cells (Tregs) have been reported to be increased in patients with pulmonary tuberculosis. However, there is no such data available in ITB. The aim of this study was to investigate the differential expression of FOXP3+ T cells in patients with ITB and CD and its utility as a biomarker. METHODS: The study prospectively recruited 124 patients with CD, ITB and controls: ulcerative colitis (UC) and patients with only haemorrhoidal bleed. Frequency of CD4+CD25+FOXP3+ Tregs in peripheral blood (flow cytometry), FOXP3 mRNA expression in blood and colonic mucosa (qPCR) and FOXP3+ T cells in colonic mucosa (immunohistochemistry) were compared between controls, CD and ITB patients. RESULTS: Frequency of CD4+CD25+FOXP3+ Treg cells in peripheral blood was significantly increased in ITB as compared to CD. Similarly, significant increase in FOXP3+ T cells and FOXP3 mRNA expression was observed in colonic mucosa of ITB as compared to CD. ROC curve showed that a value of >32.5% for FOXP3+ cells in peripheral blood could differentiate between CD and ITB with a sensitivity of 75% and a specificity of 90.6%. CONCLUSION: Phenotypic enumeration of peripheral CD4+CD25+FOXP3+ Treg cells can be used as a non-invasive biomarker in clinics with a high diagnostic accuracy to differentiate between ITB and CD in regions where TB is endemic.
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Linfocitos T CD4-Positivos/citología , Enfermedad de Crohn/sangre , Enfermedad de Crohn/diagnóstico , Factores de Transcripción Forkhead/metabolismo , Subunidad alfa del Receptor de Interleucina-2/metabolismo , Tuberculosis Gastrointestinal/sangre , Tuberculosis Gastrointestinal/diagnóstico , Adolescente , Adulto , Anciano , Biomarcadores/sangre , Linfocitos T CD4-Positivos/metabolismo , Estudios de Casos y Controles , Colon/inmunología , Enfermedad de Crohn/inmunología , Diagnóstico Diferencial , Femenino , Factores de Transcripción Forkhead/genética , Regulación de la Expresión Génica , Humanos , Masculino , Persona de Mediana Edad , ARN Mensajero/genética , ARN Mensajero/metabolismo , Tuberculosis Gastrointestinal/inmunología , Adulto JovenRESUMEN
Visceral leishmaniasis (VL) is a disseminated and lethal disease of reticulo-endothelial system caused by protozoan parasites Leishmania donovani and L. infantum, which are known to induce host T cell suppression. To understand the impact of parasite load on T cell function, the present was focused on parasite load with T cell function in bone marrow of 26 VL patients. We observed significant enrichment of forkhead box protein 3 (FoxP3)+ (P = 0·0003) and interleukin (IL)-10+ FoxP3+ regulatory T cells (Treg ) (P = 0·004) in the bone marrow (BM) of patients with high parasite load (HPL) compared with low parasite load (LPL). Concordantly, T effector cells producing interferon (IFN)-γ (P = 0·005) and IL-17A (P = 0·002) were reduced in the BM of HPL. Blocking of Treg -cell derived suppressive cytokines [(IL-10 and transforming growth factor (TGF)-ß] rescued the effector T cells and their functions. However, it was observed that TGF-ß levels were dominant, favouring Treg cell differentiation. Furthermore, the low ratio of IL-6/TGF-ß favours the suppressive milieu in HPL patients. Here we show the change in levels of various cytokines with the parasitic load during active VL, which could be helpful in devising newer immunotherapeutic strategies against this disease.
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Médula Ósea/patología , Leishmania donovani/fisiología , Leishmaniasis Visceral/inmunología , Subgrupos de Linfocitos T/inmunología , Linfocitos T Reguladores/inmunología , Adolescente , Adulto , Anticuerpos Bloqueadores/farmacología , Células Cultivadas , Niño , Citocinas/metabolismo , Femenino , Factores de Transcripción Forkhead/metabolismo , Humanos , Terapia de Inmunosupresión , Leishmaniasis Visceral/parasitología , Activación de Linfocitos , Masculino , Persona de Mediana Edad , Carga de Parásitos , Adulto JovenRESUMEN
To date, CD5 expression and its role in acute T cell lymphoblastic leukaemia (T-ALL) have not been studied closely. We observed a significant reduction in surface expression of CD5 (sCD5) on leukaemic T cells compared to autologous non-leukaemic T cells. In this study, we have shown the molecular mechanism regulating the expression and function of CD5 on leukaemic T cells. A total of 250 patients suffering from leukaemia and lymphoma were immunophenotyped. Final diagnosis was based on their clinical presentation, morphological data and flow cytometry-based immunophenotyping. Thirty-nine patients were found to be of ALL-T origin. Amplification of early region of E1A and E1B transcripts of CD5 was correlated with the levels of surface and intracellular expression of CD5 protein. Functional studies were performed to show the effect of CD5 blocking on interleukin IL-2 production and survival of leukaemic and non-leukaemic cells. Lack of expression of sCD5 on T-ALL blasts was correlated closely with predominant transcription of exon E1B and significant loss of exon E1A of the CD5 gene, which is associated with surface expression of CD5 on lymphocytes. High expression of E1B also correlates with increased expression of cytoplasmic CD5 (cCD5) among leukaemic T cells. Interestingly, we observed a significant increase in the production of IL-2 by non-leukaemic T cells upon CD5 blocking, leading possibly to their increased survival at 48 h. Our study provides understanding of the regulation of CD5 expression on leukaemic T cells, and may help in understanding the molecular mechanism of CD5 down-regulation.
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Antígenos de Neoplasias , Crisis Blástica , Antígenos CD5 , Regulación hacia Abajo/inmunología , Exones/inmunología , Regulación Leucémica de la Expresión Génica/inmunología , Leucemia-Linfoma Linfoblástico de Células T Precursoras , Antígenos de Neoplasias/genética , Antígenos de Neoplasias/inmunología , Crisis Blástica/genética , Crisis Blástica/inmunología , Crisis Blástica/patología , Antígenos CD5/genética , Antígenos CD5/inmunología , Supervivencia Celular/genética , Supervivencia Celular/inmunología , Niño , Femenino , Humanos , Interleucina-2/genética , Interleucina-2/inmunología , Masculino , Leucemia-Linfoma Linfoblástico de Células T Precursoras/genética , Leucemia-Linfoma Linfoblástico de Células T Precursoras/inmunología , Leucemia-Linfoma Linfoblástico de Células T Precursoras/patología , Adulto JovenRESUMEN
Optimal T cell activation is vital for the successful resolution of microbial infections. Programmed death-1 (PD-1) is a key immune check-point receptor expressed by activated T cells. Aberrant/excessive inhibition mediated by PD-1 may impair host immunity to Mycobacterium tuberculosis infection, leading to disseminated disease such as miliary tuberculosis (MTB). PD-1 mediated inhibition of T cells in pulmonary tuberculosis and TB pleurisy is reported. However, their role in MTB, particularly at the pathological site, remains to be addressed. The objective of this study was to investigate the role of PD-1-PD-ligand 1 (PD-L1) in T cell responses at the pathological site from patients of TB pleurisy and MTB as clinical models of contained and disseminated forms of tuberculosis, respectively. We examined the expression and function of PD-1 and its ligands (PD-L1-PD-L2) on host immune cells among tuberculosis patients. Bronchoalveolar lavage-derived CD3 T cells in MTB expressed PD-1 (54·2 ± 27·4%, P ≥ 0·0009) with significantly higher PD-1 ligand-positive T cells (PD-L1: 19·8 ± 11·8%; P ≥ 0·019, PD-L2: 12·6 ± 6·2%; P ≥ 0·023), CD19+ B cells (PD-L1: 14·4 ± 10·4%; P ≥ 0·042, PD-L2: 2·6 ± 1·43%; not significant) and CD14+ monocytes (PD-L1: 40·2 ± 20·1%; P ≥ 0·047, PD-L2: 22·4 ± 15·6%; P ≥ 0·032) compared with peripheral blood (PB) of MTB and healthy controls. The expression of PD-1 was associated with a diminished number of cells producing effector cytokines interferon (IFN)-γ, tumour necrosis factor (TNF)-α, interleukin (IL)-2 and elevated apoptosis. Locally accumulated T cells were predominantly PD-1+ -PD-L1+ , and blocking this pathway restores the protective T cell response. We conclude that M. tuberculosis exploits the PD-1 pathway to evade the host immune response by altering the T helper type 1 (Th1) and Th2 balance at the pathological site of MTB, thereby favouring disease dissemination.
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Mycobacterium tuberculosis/inmunología , Receptor de Muerte Celular Programada 1/metabolismo , Células TH1/inmunología , Células Th2/inmunología , Tuberculosis Miliar/inmunología , Adolescente , Adulto , Antígeno B7-H1/metabolismo , Líquido del Lavado Bronquioalveolar/inmunología , Células Cultivadas , Femenino , Humanos , Evasión Inmune , Interferón gamma/metabolismo , Interleucina-2/metabolismo , Masculino , Persona de Mediana Edad , Receptor de Muerte Celular Programada 1/genética , Células TH1/microbiología , Balance Th1 - Th2 , Células Th2/microbiología , Factor de Necrosis Tumoral alfa/metabolismo , Adulto JovenRESUMEN
BACKGROUND: Postpartum sepsis accounts for most maternal deaths between three and seven days postpartum, when most mothers, even those who deliver in facilities, are at home. Case fatality rates for untreated women are very high. Newborns of ill women have substantially higher infection risk. METHODS/DESIGN: The objectives of this study are to: (1) create, field-test and validate a tool for community health workers to improve diagnostic accuracy of suspected puerperal sepsis; (2) measure incidence and identify associated risk factors and; (3) describe etiologic agents responsible and antibacterial susceptibility patterns. This prospective cohort study builds on the Aetiology of Neonatal Infection in South Asia study in three sites: Sylhet, Bangladesh and Karachi and Matiari, Pakistan. Formative research determined local knowledge of symptoms and signs of postpartum sepsis, and a systematic literature review was conducted to design a diagnostic tool for community health workers to use during ten postpartum home visits. Suspected postpartum sepsis cases were referred to study physicians for independent assessment, which permitted validation of the tool. Clinical specimens, including urine, blood, and endometrial material, were collected for etiologic assessment and antibiotic sensitivity. All women with puerperal sepsis were given appropriate antibiotics. DISCUSSION: This is the first large population-based study to expand community-based surveillance for diagnoses, referral and treatment of newborn sepsis to include maternal postpartum sepsis. Study activities will lead to development and validation of a diagnostic tool for use by community health workers in resource-poor countries. Understanding the epidemiology and microbiology of postpartum sepsis will inform prevention and treatment strategies and improve understanding of linkages between maternal and neonatal infections.
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Infecciones Asintomáticas , Bacteriemia/diagnóstico , Infección Puerperal/diagnóstico , Sepsis/diagnóstico , Adolescente , Adulto , Antibacterianos/farmacología , Antibacterianos/uso terapéutico , Infecciones Asintomáticas/epidemiología , Bacteriemia/tratamiento farmacológico , Bacteriemia/epidemiología , Bacteriemia/microbiología , Bangladesh/epidemiología , Estudios de Cohortes , Agentes Comunitarios de Salud , Asistencia Sanitaria Culturalmente Competente/etnología , Países en Desarrollo , Femenino , Bacterias Gramnegativas/efectos de los fármacos , Bacterias Gramnegativas/crecimiento & desarrollo , Bacterias Gramnegativas/aislamiento & purificación , Bacterias Grampositivas/efectos de los fármacos , Bacterias Grampositivas/crecimiento & desarrollo , Bacterias Grampositivas/aislamiento & purificación , Visita Domiciliaria , Humanos , Incidencia , Tipificación Molecular , Pakistán/epidemiología , Periodo Posparto , Infección Puerperal/tratamiento farmacológico , Infección Puerperal/epidemiología , Infección Puerperal/microbiología , Factores de Riesgo , Sepsis/tratamiento farmacológico , Sepsis/epidemiología , Sepsis/microbiología , Adulto JovenRESUMEN
Allospecific recruitment of T cells is primary to the pathogenesis of renal transplant rejection. Chemokines and their receptors inducing a Th1 cytokine response play a central role in this recruitment. Renal allograft biopsies of 28 patients with acute cellular rejection and 10 protocol biopsies (controls) were examined in accordance with Banff grading 2007 schema. Immunohistochemistry for CD3 and CC chemokine receptor 5 (CCR5) in sequential sections was performed and quantitatively assessed in the glomeruli, tubules, and interstitium. Histopathologic and clinical correlations were carried out. CD3- and CCR5-positive cells were observed in significantly higher numbers in rejection cases than in controls (P = 0.010). A larger proportion of CCR5-positive cells were noted in the foci of tubulitis compared to the interstitial infiltrates and glomeruli in all cases, and it correlated with the grade of cellular rejection (P = 0.010). A greater number of CCR5-positive cells were seen in early rejection (<6 months posttransplant) compared to late rejection. No clinical correlation with serum creatinine levels was found. CCR5-positive cells represent the alloaggressive subset of T cells in ACR, and their numbers correlate with rejection severity. CCR5 may be used as a marker of early acute rejection and may be an important target for future antirejection therapies.
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PURPOSE: Standard semen parameters are poor predictors of fertility potential. To date, apart from, paternal karyotyping sperm factors are not evaluated in recurrent pregnancy loss (RPL), only recent studies have emphasized the role of sperm factors in early embryonic development as sperm transcribes genes critical for early embryonic development. Sperm DNA integrity is useful diagnostic and prognostic marker and has clinical implications in idiopathic recurrent pregnancy loss (iRPL) following spontaneous conception. The aim of this study was to assess DNA integrity in cases experiencing iRPL following spontaneous conception. METHODS: Semen samples from 45 patients and 20 controls were analyzed as per WHO 1999 guidelines and sperm chromatin structure assay (SCSA) was used to measure DNA fragmentation index (DFI). RESULTS: By applying receiver operating curve (ROC) analysis, sperm DFI of approximately 26 % was found in male partner of couples experiencing iRPL. CONCLUSIONS: Our data indicate that sperm from men with a history of iRPL have a higher percentage of DNA damage as compared to control group, and this can explain pregnancy loss in these patients. Men with higher DFI are infertile whereas men with lower DFI (26 %) are able to conceive but experience recurrent pregnancy loss. Thus it is important to evaluate sperm DFI in couples experiencing iRPL to understand exact aetiology of RPL and determine prognosis and management.
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Fragmentación del ADN , Pérdida del Embrión/genética , Fertilización/genética , Espermatozoides/patología , Adulto , Estudios de Casos y Controles , Cromatina/genética , Pérdida del Embrión/patología , Femenino , Humanos , Infertilidad Masculina , Cariotipificación/métodos , Masculino , Persona de Mediana Edad , Valor Predictivo de las Pruebas , Embarazo , Resultado del Embarazo , Pronóstico , Curva ROC , Semen/citología , Análisis de Semen/métodos , Sensibilidad y EspecificidadRESUMEN
BACKGROUND: Stability is considered the most important parameter before performing any melanocyte transplantation procedure in vitiligo; however, current criteria rely on the history given by the patients. OBJECTIVE: This study was undertaken to determine the clinical, biochemical and immunological factors determining stability of disease in patients with generalized vitiligo to facilitate better patient selection for melanocyte transplantation and to understand immunological mechanisms for disease activity. METHODS: Thirty-three patients with generalized vitiligo with < 10% body surface area involved were allocated to three clinical stability groups: Group 1 (stability > 3 months but < 1 year), Group 2 (≥ 1 year but < 2 years) and Group 3 (≥ 2 years). Melanocyte transplantation was done using suction blister epidermal grafting (SBEG) on a single patch. Blood was drawn for catalase estimation from all patients and from 10 healthy control subjects. A 3-mm punch biopsy was taken on the day of transplantation from the margin of the macule in the first five patients in each group for the immunohistochemistry of CD4, CD8, CD45RO, CD45RA and FoxP3. Those with ≥ 75% repigmentation at 6 months were labelled as responders. RESULTS: The success rate was 0% in Group 1, 37·5% in Group 2 and 77·8% in Group 3. The difference in the success rate between the groups was statistically significant (P = 0·005). The median period of stability was significantly higher in the responders compared with that in the nonresponders (P = 0·001). Catalase levels were not significantly different between patients in the three groups of cases and in controls, or between responders and nonresponders. Lesional CD8 cells were significantly higher in Group 1 compared with Group 3. The percentages of CD8 and CD45RO cells were significantly higher in the nonresponders compared with the responders. CONCLUSION: Along with clinical stability, the proportion of CD8 and CD45RO cells in skin biopsies might help to determine the stability of the disease and thereby predict the success of transplantation.
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Melanocitos/trasplante , Vitíligo/terapia , Adolescente , Adulto , Anciano , Catalasa/metabolismo , Femenino , Humanos , Inmunohistoquímica , Antígenos Comunes de Leucocito/inmunología , Masculino , Persona de Mediana Edad , Linfocitos T/inmunología , Resultado del Tratamiento , Vitíligo/enzimología , Vitíligo/inmunología , Adulto JovenRESUMEN
Acute rejection of human renal allografts is a frequent, serious posttransplantation complication, occurring in up to 50% of recipients. Leukocyte recruitment is a central feature of acute allograft rejection. Chemokine receptors are expressed on leukocytes in a cell type-specific manner. Recently CCR5+ and CXCR3+ cells have been observed in allograft biopsy specimens of patients undergoing acute cellular rejection (ACR). Herein we investigated the expression of Th1 (CCR5, CXCR3, and CCR2) and Th2 (CCR4, CCR3, and CCR8)-associated chemokine receptors on CD4 and CD8 T-cell populations. We sought to correlate chemokine receptor expression in peripheral blood T-cell subsets with the types of graft dysfunction (biopsy-proven rejections). In the peripheral blood CD4+ and CD8+ T-cell populations of patients with graft dysfunction, we observed a high frequency of Th1-associated chemokine receptors CCR5+ and CCR2+ but not CXCR3.
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Linfocitos T CD8-positivos/inmunología , Rechazo de Injerto/inmunología , Trasplante de Riñón/inmunología , Receptores de Quimiocina/análisis , Células TH1/inmunología , Células Th2/inmunología , Enfermedad Aguda , Adolescente , Adulto , Biopsia , Femenino , Citometría de Flujo , Rechazo de Injerto/patología , Humanos , India , Modelos Logísticos , Masculino , Persona de Mediana Edad , Análisis Multivariante , Trasplante Homólogo , Resultado del Tratamiento , Adulto JovenRESUMEN
Lipid antigens of Leishmania donovani like lipophosphoglycans are shown as a potent ligand for the activation of invariant natural killer T (iNKT) cells. It is reported that activation of iNKT cells augments the disease pathology in experimental visceral leishmaniasis (VL). In this study, we demonstrate the enrichment of iNKT cells in the bone marrow, one of the disease sites among patients with VL.
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Médula Ósea/inmunología , Médula Ósea/patología , Leishmania donovani/inmunología , Leishmaniasis Visceral/inmunología , Leishmaniasis Visceral/patología , Células T Asesinas Naturales/inmunología , Adolescente , Adulto , Anciano , Niño , Preescolar , Femenino , Glucolípidos/inmunología , Humanos , Activación de Linfocitos , Masculino , Persona de Mediana Edad , Fosfolípidos/inmunología , Adulto JovenRESUMEN
Absence of an effective Th-1 response has been demonstrated as a major cause for the disease pathology among patients with visceral leishmaniasis (VL). Defining strategies to prevent the development of Th-2 response and/or initiate/activate effective Th-1 response may be of help to reduce the growing incidence of drug unresponsiveness. Adenosine, which is considered as an endogenous anti-inflammatory agent is generated in injured/inflamed tissues by the enzymatic catabolism of adenosine triphosphate (ATP), and it suppresses inflammatory responses of essentially all immune cells. The extracellular adenosine-producing pathway comprises two major enzymes CD39 (ATP â ADP â AMP) and CD73 (AMP â Adenosine). In contrast, the adenosine-degrading pathway contains only one major enzyme adenosine deaminase (ADA). Our study shows high concentration of adenosine in diseased condition, varying expression of enzyme involved in adenosine-producing (CD73↓) and adenosine-degrading (ADA↑) pathways. These are less studied in infections like VL but are very important in terms of endogenous regulation of immune response among patients.
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5'-Nucleotidasa/sangre , Adenosina Desaminasa/sangre , Adenosina/sangre , Leishmaniasis Visceral/inmunología , Leishmaniasis Visceral/metabolismo , 5'-Nucleotidasa/metabolismo , Adenosina/metabolismo , Adenosina Desaminasa/metabolismo , Adenosina Trifosfato/metabolismo , Adolescente , Adulto , Niño , Preescolar , Femenino , Humanos , Leishmania donovani/inmunología , Masculino , Persona de Mediana Edad , Células TH1/inmunología , Células Th2/inmunologíaRESUMEN
The prevalence of bacterial sexually transmitted infections among clients of female sex workers (FSWs) was studied. A total of 156 condoms were collected from clients of 13 sex workers during three consecutive days. Condoms used by clients of FSWs were collected and DNA was extracted from the seminal fluid and used for the diagnosis of Neisseria gonorrhoeae, Chlamydia trachomatis and Trichomonas vaginalis by polymerase chain reaction. The prevalence of N. gonorrhoeae, C. trachomatis and T. vaginalis among clients of FSWs was 4.5% (7/156), 2.5% (4/156) and 7% (11/156), respectively.
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Infecciones por Chlamydia/epidemiología , Chlamydia trachomatis , Gonorrea/epidemiología , Semen/microbiología , Vaginitis por Trichomonas/epidemiología , Bangladesh/epidemiología , Condones , Estudios Transversales , Femenino , Humanos , Masculino , Proyectos Piloto , Prevalencia , Trabajo SexualRESUMEN
Unilateral diffuse or localized enlargement of the sternocleidomastoid muscle (SCM) is an event commonly seen in infancy, and is popularly known as 'sternocleidomastoid tumor'. The condition, which usually spontaneously resolves with or without physiotherapy, is due to a hematoma following a difficult labor. The muscle regains its elasticity and complete function. In some infants it resolves with fibromatous changes in the muscle leading to shortening, fibrosis and finally culminating in torticollis. We describe a case of idiopathic diffuse enlargement of unilateral SCM in a 12-year-old child without any functional compromise or torticollis. The histopathological and clinical characteristics differentiating it from more commonly described sternocleidomastoid tumor or fibromatosis coli are described. We believe this is the first case report of idiopathic hyperplasia of SCM.
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Hiperplasia/patología , Músculos del Cuello/patología , Niño , Estudios de Seguimiento , Humanos , Masculino , Enfermedades Musculares/patologíaRESUMEN
PURPOSE: With the increasing use of newer modalities such as CT cholangiography and MRCP offering an accurate delineation of the ductal anatomy of choledochal cysts, the incidence of type IV-A biliary duct cysts has increased. Although the management of the more common type I cysts is well established, that of type IV-A cysts is still controversial. The localized/unilobar variety of type IV-A cysts is a unique entity amenable to curative surgical management. METHODS: Between Jan 2000 and Jan 2005, 10 of 25 cases with choledochal cysts were diagnosed as having type IV- cysts. Four of these were localized or unilobar variants affecting only one lobe of the liver. Three cases had a left ductal involvement and one had a right ductal involvement of their intrahepatic component. We describe the presentation and curative surgical management of these patients with a unilobar variety of type IV-A cysts and discuss the management options for type IV-A cysts in the literature. RESULTS: One child with previous surgical treatment for presumed type 1 cyst, diagnosed as having a type IV-A right ductal cyst complicated with liver abscess, underwent right hepatectomy, two children had a left hepatectomy and one child had a left lateral lobectomy. All four children had uncomplicated intraoperative and postoperative courses. After 4-8 years' follow-up, all are symptom-free. There were no biliary tract or hepatic abnormalities on radiological surveillance with MRCP. CONCLUSIONS: In some series, the incidence of type IV-A choledochal cysts is equal to or higher than that of type 1 cysts. MRCP and intraoperative cholangiogram can help to confirm the anatomical varieties and associated ductal strictures. In the unilobar/uniductal varieties, complete cyst excision can be safely achieved in children through an additional hepatectomy/lobectomy. This can result in a curative status, leaving the child free from complications such as cholangitis, abscess, hepatolithiasis and the risk of biliary duct malignancy.
Asunto(s)
Quiste del Colédoco/diagnóstico por imagen , Quiste del Colédoco/cirugía , Hepatectomía/métodos , Niño , Preescolar , Colangiografía , Femenino , Humanos , Masculino , Resultado del TratamientoRESUMEN
OBJECTIVE: To evaluate for the occurrence of occult NVD in children with anorectal malformations (ARM) using urodynamic evaluation. METHODS: This prospective study was carried out on children with ARM prior to and following definitive procedure. Urodynamic studies were performed on the Phoenix Griffon machine (Albyn Medical) using Phoenix plus software. RESULT: Nineteen children in the age range of 3 months to 156 months (mean = 19.2) were included in this study. Among these 19 children 13 underwent re-evaluation after definitive surgery for ARM. There were 11(57.9%) males and 8(42.1%) females. Of the 19 children 14 (73.7%) were cases of high anorectal malformation (HARM) and 5 (26.3%) were cases of low anorectal malformation (LARM). Baseline evaluation done in 19 children revealed seven urodynamic patterns: Normal capacity, compliant without uninhibited contractions (UIC) (21.1%); Normal capacity, compliant with UIC (5.3%); Normal capacity, poorly compliant without UIC (5.3%); Normal capacity, poorly compliant with UIC (10.5%); small capacity, compliant with UIC (5.3%); Small capacity, poorly compliant with UIC (26.3%) and large capacity, complaint with UIC (26.3%). Thirteen patients were evaluated post operatively also and in only 23% (3 of 13) no change in urodynamic pattern were observed. In the remaining 76.9% (10 of 13) some changes in urodynamics pattern were observed. The deleterious changes observed were appearance of UIC in 30.8% (4 of 13), decrease in the bladder capacity in 23% (3 of 13) and decrease in bladder compliance in 15.4% (2 of 13). CONCLUSION: Only 9 of of the 19 patients had normal urodynamics pre-operatively and post-operatively 3 more patients worsened. Incidence of occult NVD is high in patients with ARM even in the absence of clinical and radiological evidence of vertebral or lower urinary tract abnormalities. Though there seems to be a high incidence of changes in the neurovesical functions of these patients following definitive corrective surgery for ARM only time will show whether this has any deleterious effect on the upper tracts.
Asunto(s)
Ano Imperforado/complicaciones , Ano Imperforado/cirugía , Trastornos Urinarios/etiología , Canal Anal/anomalías , Canal Anal/cirugía , Niño , Preescolar , Anomalías del Sistema Digestivo/complicaciones , Anomalías del Sistema Digestivo/cirugía , Humanos , Lactante , Estudios Prospectivos , Recto/anomalías , Recto/cirugía , UrodinámicaRESUMEN
Urethral duplication is an uncommon congenital anomaly, not often reported, which may be partial or complete. Anorectal malformations are not as uncommon and they may be associated with a host of associated anomalies. However, the association of urethral duplication with anorectal malformation is rare; this report describes two such cases. In one case the intervening septum could be incised endoscopically and in the other case the duplicated urethra was excised.