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1.
Pediatr Cardiol ; 2024 Apr 05.
Artículo en Inglés | MEDLINE | ID: mdl-38578303

RESUMEN

Aberrant subclavian artery (ASCA) is frequently observed in interrupted aortic arch (IAA) with aortic/subaortic obstruction. Developmental significance of ASCA in IAA in utero remains elusive. Newborns with prenatally diagnosed isolated IAA under continuous prostaglandin E1 infusion were studied. Cross-sectional areas of aortic valve opening (AVOCSA) and patent ductus arteriosus (PDACSA) were represented by echocardiographic measurement of (diameter)2 indexed by body surface area (m2). Types of IAA and presence of ASCA were examined in relation to sizes of AVOCSA and PDACSA. Twenty-four newborns with IAA (six type A and 18 type B) were reviewed. Male dominance was seen in type B (male 72%). Twenty-three patients had left aortic arch. No type A patients had ASCA, but 50% of type B had ASCA; AVOCSA was significantly smaller in type B than in type A (p = 0.003). In type B, PDACSA was significantly larger in those with ASCA than without (p = 0.003), but AVOCSA exhibited no significant size difference between these two subgroups. Chromosome 22q11 deletion was only seen in type B (56%) and showed no significant correlation with the presence of ASCA. In type B IAA, the presence of ASCA was associated with larger PDACSA, suggesting an adaptive enlargement of the ductus arteriosus and ASCA in response to reduced antegrade flow across small AVOCSA, which may be augmenting cerebral blood flow. Preservation of cerebral blood flow may be another important determinant affecting embryonic cardiovascular development.

2.
Pediatr Cardiol ; 2023 Jul 21.
Artículo en Inglés | MEDLINE | ID: mdl-37477699

RESUMEN

BACKGROUND: The ductus arteriosus (DA) is critical in maintaining postnatal circulation in neonates with obstructed systemic circulation (OSC) and pulmonary circulation (OPC). We hypothesized that the size of the DA and aortic isthmus (AoI) undergoes adaptive growth in utero to counteract the hemodynamic challenges in these congenital heart diseases (CHD). METHODS: Postnatal echocardiograms of neonates diagnosed prenatally with ductal-dependent CHD who were started on prostaglandins within 24 h of birth were reviewed. We assessed the cross-sectional area of the aortic valve opening, pulmonary valve opening, AoI, and DA by calculating (diameter)2/body surface area. Neonates were classified into OSC or OPC then subgrouped depending upon the patency of semilunar valves: OSC with and without aortic atresia (OSC-AA and OSC-nAA, respectively) and OPC with and without pulmonary atresia (OPC-PA and OPC-nPA, respectively). RESULTS: Ninety-four cases were studied. The DA in OSC was significantly larger than OPC, and the DA in OSC-AA was significantly larger than OSC-nAA. The size of the AoI was significantly larger in OPC than OSC and larger in OSC-AA than OSC-nAA. Within the OSC-nAA group, there was no significant difference in the size of the DA, AoI, or pulmonary valve opening between those with retrograde flow (RF) at the AoI and without (nRF) except the aortic valve opening was significantly larger in nRF. All groups had comparable cross-sectional areas of systemic output. CONCLUSIONS: Our findings suggest that DA and AoI show compensatory growth to maintain critical blood flow to vital organs against primary anatomical abnormalities in ductus-dependent CHD. (249 words).

3.
J Gene Med ; 22(11): e3260, 2020 11.
Artículo en Inglés | MEDLINE | ID: mdl-32783258

RESUMEN

BACKGROUND: Germline genetic variants of human telomerase reverse transcriptase (hTERT) are known to predispose for various malignancies, including glioma. The present study investigated genetic variation of hTERT T/G (rs2736100) and hTERT G/A (rs2736098) with respect to glioma risk. METHODS: Confirmed cases (n = 106) were tested against 210 cancer-free healthy controls by the polymerase chain reaction-restriction fragment length polymorphism technique for genotyping. RESULTS: Homozygous variant 'GG' genotype of rs2736100 frequency was > 4-fold significantly different in cases versus controls (39.6% 17.2%; p < 0.0001). Furthermore, variant 'G' allele was found to be significantly associated with cases (0.5 versus 0.2 in controls; p < 0.0001). Homozygous variant rs2736098 'AA' genotype (35.8% versus 23.8%) and allele 'A' (0.49 versus 0.34) showed a marked significant difference in cases and controls, respectively (p < 0.05). In hTERT rs2736100, the GG genotype significantly presented more in higher grades and GBM (p < 0.0001). Furthermore, the GG variant of hTERT rs2736100 had a poor probability with respect to the overall survival of patients compared to TG and TT genotypes (log rank p = 0.03). Interestingly, two haplotypes of hTERT rs2736100/rs2736098 were identified as GG and GA that conferred a > 3- and 5-fold risk to glioma patients respectively, where variant G/A haplotype was observed to have the highest impact with respect to glioma risk (p < 0.0001). CONCLUSIONS: The results of the present study indicate that hTERT rs2736098 and rs2736100 variants play an important role in conferring a strong risk of developing glioma. Furthermore, hTERT rs2736100 GG variant appears to play a role in the bad prognosis of glioma patients. Haplotypes GG and GA could prove to be vital tools for monitoring risk in glioma patients.


Asunto(s)
Biomarcadores de Tumor/genética , Regulación Neoplásica de la Expresión Génica , Predisposición Genética a la Enfermedad , Glioma/mortalidad , Glioma/patología , Polimorfismo de Nucleótido Simple , Telomerasa/genética , Adulto , Estudios de Casos y Controles , Femenino , Genotipo , Glioma/clasificación , Glioma/genética , Humanos , Masculino , Pronóstico , Tasa de Supervivencia
4.
Pediatr Cardiol ; 41(6): 1115-1124, 2020 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-32388668

RESUMEN

Elective closure of atrial septal defect (ASD) is usually recommended during preschool ages. However, ASD may contribute to deteriorating health in the presence of significant comorbidity and, thus, may need earlier closure. There is a lack of clarity regarding the indications for and outcomes after ASD closure in infancy and early childhood. We investigated the benefits and safety of surgical ASD closure in symptomatic patients under 2 years of age. Retrospective chart review was conducted in patients who underwent surgical ASD closure within the first 2 years of life. Of 31 symptomatic ASD patients, 22 had persistent respiratory symptoms, 24 failure to thrive, and 9 pulmonary hypertension. Overall, 26 patients (84.0%) showed clinical improvement after ASD closure, including improved respiratory status (17/22; 77.3%), resumption of normal growth (15/24; 62.5%), and resolution of pulmonary hypertension (7/7; 100%, 2 patients unable to assess postoperatively). Two medically complicated patients died a few months after surgery unrelated to surgical complications. Four out of 8 ventilator-dependent patients were weaned from mechanical ventilation within 1 month after ASD closure. Closure of ASD did not improve those patients with highly advanced lung disease and/or medically complex conditions including underlying genetic abnormalities. Surgical complications were uncommon. Postoperative hospital stay was 4 to 298 days (median 8 days). The majority of our patients demonstrated significant clinical improvement after ASD closure. Early ASD closure is safe and beneficial for symptomatic infants and young children with associated underlying pulmonary abnormalities, especially bronchopulmonary dysplasia.


Asunto(s)
Defectos del Tabique Interatrial/cirugía , Displasia Broncopulmonar/complicaciones , Displasia Broncopulmonar/fisiopatología , Cateterismo Cardíaco/métodos , Preescolar , Femenino , Defectos del Tabique Interatrial/complicaciones , Humanos , Hipertensión Pulmonar/complicaciones , Hipertensión Pulmonar/fisiopatología , Lactante , Tiempo de Internación , Masculino , Estudios Retrospectivos , Resultado del Tratamiento
5.
Apoptosis ; 23(2): 113-131, 2018 02.
Artículo en Inglés | MEDLINE | ID: mdl-29349707

RESUMEN

Piperazine scaffolds or 2-azetidinone pharmacophores have been reported to show anti-cancer activities and apoptosis induction in different types of cancer cells. However, the mechanistic studies involve in induction of apoptosis addressing these two moieties for human cervical cancer cells remain uncertain. The present study emphasizes on the anti-proliferating properties and mechanism involved in induction of apoptosis for these structurally related azoles derivatives in HeLa cancer cells. 1-Phenylpiperazine clubbed with 2-azetidione derivatives (5a-5h) were synthesized, characterized using various spectroscopic techniques and evaluated for their in-vitro anti-proliferative activities and induction of apoptosis. Further, we also evaluated oxidative stress generated by these synthetic derivatives (5a-5h). Cell viability studies revealed that among all, the compound N-(3-chloro-2-(3-nitrophenyl)-4-oxoazetidin-1-yl)-2-(4-phenylpiperazin-1-yl) acetamide 5e remarkably inhibited the growth of HeLa cells in a concentration dependent manner having IC50 value of 29.44 ± 1.46 µg/ml. Morphological changes, colonies suppression and inhibition of migration clearly showed the antineoplasicity in HeLa cells treated with 5e. Simultaneously, phosphatidylserine externalization, DNA fragmentation and cell-cycle arrest showed ongoing apoptosis in the HeLa cancer cells induced by compound 5e in concentration dependent manner. Additionally, generation of intracellular ROS along with the decrease in mitochondrial membrane potential supported that compound 5e caused oxidative stress resulting in apoptosis through mitochondria mediated pathway. Elevation in the level of cytochrome c and upregulation in expression of caspase-3 clearly indicated the involvement of the intrinsic pathway of programmed cell death. In brief; compound 5e could serve as a promising lead for the development of an effective antitumor agent.


Asunto(s)
Antineoplásicos/farmacología , Azetidinas/farmacología , Mitocondrias/efectos de los fármacos , Piperazina/farmacología , Neoplasias del Cuello Uterino/fisiopatología , Antineoplásicos/síntesis química , Antineoplásicos/química , Azetidinas/síntesis química , Azetidinas/química , Caspasa 3/genética , Caspasa 3/metabolismo , Puntos de Control del Ciclo Celular/efectos de los fármacos , Movimiento Celular/efectos de los fármacos , Proliferación Celular/efectos de los fármacos , Supervivencia Celular/efectos de los fármacos , Fragmentación del ADN/efectos de los fármacos , Femenino , Células HeLa , Humanos , Mitocondrias/genética , Mitocondrias/metabolismo , Estrés Oxidativo/efectos de los fármacos , Piperazina/análogos & derivados , Piperazina/síntesis química , Especies Reactivas de Oxígeno/metabolismo , Neoplasias del Cuello Uterino/genética , Neoplasias del Cuello Uterino/metabolismo
6.
Pediatr Neurosurg ; 53(5): 299-304, 2018.
Artículo en Inglés | MEDLINE | ID: mdl-29920492

RESUMEN

Hydatid disease is an endemic zoonotic disease in many areas of the world. An intracranial hydatid cyst is a relatively rare entity, accounting for only 1-2% of all intracranial space-occupying lesions. Most commonly they are seen in children and young adults. Here, we present 9 cases of pediatric intracranial hydatid cyst operated at Sher-I-Kashmir Institute of Medical Sciences, Srinagar, India, between 2009 and 2015. The mean age of presentation was 11.5 years. The male to female ratio was 5: 4. In 7 cases, a history of contact with pet dogs was present. Seizure was the most common finding, present in 7 cases. Seven patients had solitary cysts and 2 had multiple cysts on presentation. All patients were operated on, and recurrence was observed in 2 patients. The features of this rare disease are retrospectively analyzed in this presentation and the literature is reviewed.


Asunto(s)
Encefalopatías/cirugía , Equinococosis/cirugía , Zoonosis/parasitología , Animales , Encéfalo/parasitología , Encéfalo/patología , Encefalopatías/diagnóstico , Encefalopatías/parasitología , Niño , Perros/parasitología , Equinococosis/diagnóstico , Femenino , Humanos , India , Imagen por Resonancia Magnética , Masculino , Recurrencia , Estudios Retrospectivos , Convulsiones/parasitología
7.
Childs Nerv Syst ; 33(6): 1019-1022, 2017 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-28349494

RESUMEN

INTRODUCTION: Osteochondromas are usually found in the extremities and are rarely seen in the spine. They are most commonly found in the posterior elements of the spine, and intraspinal extension is uncommon. Compressive myelopathy as a presentation of vertebral osteochondroma in a child is a rare entity. METHODS: We report a case of vertebral osteochondroma arising from the lamina of C3 vertebra, presenting with features of compressive myelopathyin a 15 year old boy.Total excision of the tumor was carried out along with lamina of C3 vertebra.Patient recovered significantly. CONCLUSION: Spinal osteochondromas must be considered as rare etiology of spinal cord or root compression in the pediatric age group and utmost care should be taken while excising these benign lesions.


Asunto(s)
Vértebras Cervicales/diagnóstico por imagen , Vértebras Cervicales/cirugía , Osteocondroma/diagnóstico por imagen , Osteocondroma/cirugía , Neoplasias de la Columna Vertebral/diagnóstico por imagen , Neoplasias de la Columna Vertebral/cirugía , Adolescente , Humanos , Masculino
8.
Birth Defects Res A Clin Mol Teratol ; 106(11): 888-893, 2016 Nov.
Artículo en Inglés | MEDLINE | ID: mdl-27891775

RESUMEN

BACKGROUND: The prevalence of ventricular septal defects (VSDs), a birth defect in which there is an opening in the wall that separates the left and right ventricles of the heart, seemed to be substantially higher in Delaware compared with the National Birth Defects Prevention Network (NBDPN). The Delaware Birth Defects Registry (BDR) noted their high prevalence of VSDs in comparison with other states. METHODS: A subset of children with a VSD born in 2007 through 2010 was identified from the complete reportable statewide defect list that the BDR creates each year. VSDs were categorized by type of VSD (muscular, perimembranous, conotruncal, or atrioventricular septal defect), by either isolated or complex, and then by spontaneously closed, surgically closed, open but clinically insignificant, lost to follow-up, fetal or neonatal death. RESULTS: The BDR team found a prevalence of VSD of 83.4 per 10,000 including fetal/neonatal deaths. Excluding fetal and neonatal deaths the prevalence was 78.7 per 10,000 live births. Excluding small muscular VSDs, the prevalence in Delaware falls to 25.7 per 10,000. CONCLUSION: The BDR team chose to include all babies with all types of VSDs. Using these criteria Delaware's prevalence of 78.7 was higher than that reported by other states (whose prevalence ranges from 1.6 to 70.0 per 10,000 live births) (National Birth Defects Prevention Network, ). Delaware's prevalence is similar to other states when small muscular VSDs are excluded. Birth Defects Research (Part A) 106:888-893, 2016. © 2016 Wiley Periodicals, Inc.


Asunto(s)
Muerte Fetal , Defectos del Tabique Interventricular/epidemiología , Sistema de Registros , Delaware/epidemiología , Humanos , Recién Nacido , Prevalencia , Estudios Retrospectivos
9.
Circ J ; 79(11): 2372-9, 2015.
Artículo en Inglés | MEDLINE | ID: mdl-26289969

RESUMEN

BACKGROUND: The incidence of late coronary artery abnormalities after arterial switch operation (ASO) for d-loop transposition of the great arteries may be underestimated. METHODS AND RESULTS: We retrospectively reviewed coronary artery morphology in 40 of 97 patients who survived the first year after ASO. Seven asymptomatic patients developed significant late coronary artery abnormalities. One patient died suddenly at home with severe left coronary artery (LCA) ostial stenosis at age 3.8 years. The second patient collapsed during exercise at age 9.6 years due to ventricular fibrillation and severe LCA ostial stenosis despite prior negative exercise stress test (EST) and myocardial perfusion imaging (MPI). The third patient was found to have moderate ostial stenosis of the LCA with negative EST and MPI. The fourth patient with exercise-induced ST-T depression and myocardial perfusion defect was shown to have complete LCA occlusion with collateral vessel formation. Three other patients had complete proximal obliteration of either of the coronary arteries with collateral supply. An additional 4 asymptomatic patients had trivial-mild narrowing of the LCA on routine selective coronary angiogram. CONCLUSIONS: Incidence of late coronary stenosis or occlusion was not infrequent after ASO (11.3%) and presented usually without preceding symptoms and often after negative non-invasive screening. We advocate routine coronary imaging in all patients after ASO before they participate in competitive sports.


Asunto(s)
Procedimientos Quirúrgicos Cardíacos/efectos adversos , Estenosis Coronaria/etiología , Vasos Coronarios , Transposición de los Grandes Vasos/cirugía , Biopsia , Procedimientos Quirúrgicos Cardíacos/mortalidad , Niño , Preescolar , Circulación Colateral , Angiografía Coronaria , Circulación Coronaria , Estenosis Coronaria/diagnóstico por imagen , Estenosis Coronaria/mortalidad , Estenosis Coronaria/fisiopatología , Vasos Coronarios/diagnóstico por imagen , Vasos Coronarios/fisiopatología , Delaware , Femenino , Hemodinámica , Hospitales Pediátricos , Humanos , Incidencia , Lactante , Recién Nacido , Masculino , Estudios Retrospectivos , Factores de Riesgo , Factores de Tiempo , Transposición de los Grandes Vasos/diagnóstico , Transposición de los Grandes Vasos/mortalidad , Resultado del Tratamiento
10.
Cureus ; 16(9): e68727, 2024 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-39371771

RESUMEN

Hyperkalaemia is a relatively common medical emergency that necessitates prompt and urgent intervention. There is an ongoing debate over the precise threshold for treating hyperkalaemia due to variability in clinical scenarios. This case report highlights the need to differentiate true hyperkalaemia from pseudohyperkalaemia by analysing serum and plasma potassium levels, thus avoiding unnecessary treatment and the risk of iatrogenic hypokalemia. This case report discusses an 89-year-old male who presented with recurrent falls and fluctuating serum potassium levels but showed no symptoms of hyperkalaemia and had no relevant drug history. Further investigation revealed an underlying myeloproliferative neoplasm with thrombocytosis, leading to the diagnosis of pseudohyperkalaemia, reflected by a significant discrepancy between serum and plasma potassium levels, showcasing the importance of considering pseudohyperkalaemia in patients with haematological malignancies and thrombocytosis.

11.
Cancer Diagn Progn ; 4(4): 521-528, 2024.
Artículo en Inglés | MEDLINE | ID: mdl-38962549

RESUMEN

Background/Aim: Craniopharyngiomas pose challenges in diagnosis and management due to their rare occurrence and diverse clinical manifestations. This study aimed to provide a comprehensive analysis of cranio-pharyngioma, including its epidemiological trends, clinical presentations, radiological characteristics, surgical interventions, and the role of radiotherapy. Patients and Methods: A retrospective observational study was conducted on 23 patients diagnosed with craniopharyngioma at our hospital from August 2017 to July 2019. Data regarding demographics, clinical presentation, radiological findings, surgical interventions, and adjuvant therapies were collected and analyzed. Results: Craniopharyngiomas exhibited a bimodal age distribution, with peaks in childhood and late adulthood. Clinical presentations varied between pediatric and adult patients, with headache and nausea/vomiting predominant in children, and visual disturbances and hypogonadism more common in adults. Radiological imaging revealed predominantly suprasellar localization and varying tumor consistency. Surgical resection was the primary treatment modality, with post-operative complications including diabetes insipidus and cerebrospinal fluid leak. Histological analysis showed distinct subtypes, with the adamantinomatous subtype predominant in children and the papillary subtype in adults. Adjuvant radiotherapy was administered in cases of incomplete resection or tumor recurrence. Conclusion: This study provides comprehensive insights into the epidemiology, clinical characteristics, radiological features, surgical interventions, and role of radiotherapy in craniopharyngioma management. Understanding these aspects is crucial for tailoring optimal treatment strategies and improving patient outcomes in this complex clinical scenario.

12.
Chem Biodivers ; 10(12): 2267-77, 2013 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-24327446

RESUMEN

A new series of N-(pyrimidin-2-yl)benzenesulfonamide derivatives, 3a-3i and 4a-4i, was synthesized from pyrimidin-2-amines, 2a-2i, with the aim to explore their effects on in vitro growth of Entamoeba histolytica. The chemical structures of the compounds were elucidated by elemental analysis, FT-IR, (1) H- and (13) C-NMR, and ESI mass-spectral data. In vitro anti-amoebic activity was evaluated against HM1 : IMSS strain of Entamoeba histolytica. The IC50 values were calculated by using the double dilution method. The results were compared with the IC50 value of the standard drug 'metronidazole'. The selected compounds were tested for their cytotoxic activities by cell-viability assay using H9C2 cardiac myoblasts cell line, and the results indicated that all the compounds displayed remarkable >80% viabilities to a concentration of 100 µg/ml.


Asunto(s)
Antiprotozoarios/síntesis química , Antiprotozoarios/farmacología , Entamoeba histolytica/efectos de los fármacos , Sulfonamidas/química , Sulfonamidas/farmacología , Animales , Línea Celular , Supervivencia Celular/efectos de los fármacos , Ratas , Relación Estructura-Actividad , Bencenosulfonamidas
13.
Genomics ; 100(3): 195-202, 2012 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-22728265

RESUMEN

We report a systematic study of gene expression during myogenesis and transdifferentiation in four bovine muscle tissues and of adipogenesis in three bovine fat tissues using DNA microarray analysis. One hundred hybridizations were performed and 7245 genes of known and unknown function were identified as being differentially expressed. Supervised hierarchical cluster analysis of gene expression patterns revealed the tissue specificity of genes. A close relationship in global gene expression observed for adipocyte-like cells derived from muscle and adipocytes derived from intramuscular fat suggests a common origin for these cells. The role of transthyretin in myogenesis is a novel finding. Different genes were highly induced during the transdifferentiation of myogenic satellite cells and in the adipogenesis of preadipocytes, indicating the involvement of different molecular mechanisms in these processes. Induction of CD36 and FABP4 expression in adipocyte-like cells and adipocytes may share a common pathway.


Asunto(s)
Adipocitos/citología , Adipogénesis , Transdiferenciación Celular , Regulación de la Expresión Génica , Células Satélite del Músculo Esquelético/citología , Transcriptoma , Adipocitos/metabolismo , Animales , Bovinos , Células Cultivadas , Medios de Cultivo/metabolismo , Desarrollo de Músculos , Análisis de Secuencia por Matrices de Oligonucleótidos , Especificidad de Órganos , Prealbúmina/genética , Prealbúmina/metabolismo , Células Satélite del Músculo Esquelético/metabolismo , Grasa Subcutánea Abdominal/citología , Grasa Subcutánea Abdominal/metabolismo , Regulación hacia Arriba
14.
Cancer Genet ; 278-279: 55-61, 2023 11.
Artículo en Inglés | MEDLINE | ID: mdl-37625215

RESUMEN

BACKGROUND: Either deletion or co-deletion of chromosomal arms 1p or 19q is a characteristic and early genetic event in oligodendroglial tumors that is associated with a better prognosis and enhanced response to therapy. Information of 1p/19q status is now regarded as the standard of care when managing oligodendroglial tumors for therapeutic options in anticipation of the increased survival and progression-free survival times associated with it. Keeping this in view, we first time attempted to establish the FISH based detection of 1p/19q deletion in glioma tissue samples to evaluate its role and involvement in the disease. METHOD: Overall 39 glioma cases of different histologies were evaluated by fluorescence in situ hybridization (FISH) technique using specific FISH probes with Olympus BX43 fluorescent microscope to detect chromosomes 1p and 19q or co-deletions therein. RESULTS: Of the 39 glioma samples, overall 27 (69.2%) were found to have deletion either in 1p, 19q or both. Deletions were observed in 23.0%, 7.6% and 38.4% in 1p, 19q and 1p/19q co-deletions respectively. Overall oligidendrioglioma presented with 53.8% (21 of 39) deletions, astrocytoma group showed 12.8% and GBM accounted for 2.5% deletions. Overall survival and disease free survival was seen significantly better in oligidendrioglioma and astrocytoma with deleted tumors as compared to non-deleted ones (p<0.05). CONCLUSION: Allelic losses on 1p and 19q, either discretely or shared, were more frequent in classic oligodendrogliomas than in either astrocytoma or Glioblastoma with better survival and response to therapy.


Asunto(s)
Astrocitoma , Neoplasias Encefálicas , Glioma , Oligodendroglioma , Humanos , Pronóstico , Hibridación Fluorescente in Situ , Neoplasias Encefálicas/tratamiento farmacológico , Neoplasias Encefálicas/genética , Neoplasias Encefálicas/patología , Deleción Cromosómica , Glioma/tratamiento farmacológico , Glioma/genética , Glioma/patología , Oligodendroglioma/tratamiento farmacológico , Oligodendroglioma/genética , Oligodendroglioma/patología , Astrocitoma/genética , Aberraciones Cromosómicas , Cromosomas , Cromosomas Humanos Par 1/genética , Cromosomas Humanos Par 19/genética
15.
Chin Neurosurg J ; 8(1): 10, 2022 May 03.
Artículo en Inglés | MEDLINE | ID: mdl-35505445

RESUMEN

BACKGROUND: To analyze clinically and radiologically the surgical outcome like residual disease, progression of disease, recurrence, disabilities, event-free survival (EFS), and mortality of different infra-tentorial tumor subtypes in children and adults of a strictly non-migratory and ethnic population. METHODS: The 410 histologically proved, out of 589, infra-tentorial brain tumor patients were analyzed clinically and by the imaging post-surgically in a single tertiary center for an ethnic region. In this analytico-observational study, retrospectively postoperative records of 589 infra-tentorial brain tumors from November 1998 to December 2018 (20 years) were retrieved, scrutinized, and compiled. The post-operative clinic-radiological records of 410 patients with proved histopathological examination results were included. Statistical law of variance was applied where-ever necessary. RESULTS: The 63.2% of the all 410 operated infra-tentorial brain tumors were males while females predominated in meningiomas and pineoblastomas. About 31.7% infra-tentorial tumors were children (below 18 years). About 54.1% cases were histologically malignant. The residual tumors comprised 40.2% and symptoms of disease-progression occurred in 10.9%. The tumor recurrence occurred in 14.3% while 6.0% patients developed severe disability. The overall mortality was 11.4% but 18.9% in malignant tumors. The event-free survival (EFS) for all the patients was 66.0%, patients with malignancies had 47.7% and benign group had 87.7%. CONCLUSION: The study, surgical outcome of infra-tentorial brain tumor subtypes in children and adults (approx. 1/3rd of patients being children), conducted in a tertiary center at a remote land-locked location with non-migratory ethnic population as its catchment area, has a significant epidemiological value for the community and the region.

16.
Anesth Essays Res ; 15(3): 296-300, 2021.
Artículo en Inglés | MEDLINE | ID: mdl-35320966

RESUMEN

Background: Elevated lactate levels in neurosurgical patients are seen in brain tumors, traumatic brain-injury, brain infarction, and subarachnoid hemorrhage. Hyperlactatemia during craniotomy may be caused by hypotension due to multiple factors. Recently, intraoperative hyperlactatemia has been associated with fresh-onset neurodeficits. Aims: We studied the prevalence of hyperlactatemia in patients undergoing craniotomy and relationship between intraoperative hyperlactatemia and development of new postoperative neurodeficit. Study Design: Eighty-six patients, American Society of Anesthesiologists Classes I,II and III, undergoing elective craniotomy for neurosurgical indications were included in this prospective, observational study in a tertiary care center. Materials and Methods: Baseline, intraoperative, and postoperative (upto 12 h) lactate levels were noted. Neurological examination to detect new-onset neurodeficits was done at intervals up to 72 h postoperatively. Lactate levels were compared between patients who developed neurodeficits and those who did not develop neurodeficits postoperatively. Statistical Analysis: Statistical analysis of the correlation between intraoperative hyperlactatemia and fresh postoperative neurodeficit was done using the Chi-square test. Results: The prevalence of intraoperative hyperlactatemia was found to be 52.3% and that of fresh-onset postoperative neurodeficits was 31.4%. The relationship between the two was statistically insignificant (P > 0.05). Conclusion: The intraoperative hyperlactatemia is not correlated with the development of fresh-onset postoperative neurodeficit. Implications: There may be no relationship between the intraoperative lactate levels and fresh-onset postoperative neurodeficits. Multifactorial reasons may be responsible for increased lactate levels which need to be identified by further research.

17.
Rapid Commun Mass Spectrom ; 24(24): 3547-52, 2010 Dec 30.
Artículo en Inglés | MEDLINE | ID: mdl-21080507

RESUMEN

We introduce a novel preconcentrating technique by using surface modification of palladium nanoparticles (Pd-NPs) with octadecane thiol (ODT) prepared in toluene for selective and sensitive extraction of proteins (insulin, ubiquitin, lysozyme) from a variety of real-world samples including pancreas, mushroom, soybean and milk using nanoparticle-liquid-liquid microextraction (NP-LLME) coupled to matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI-MS). The limit of detection (LOD) values obtained for gramicidin D and insulin in water and urine are between 17-37 nM (17-37 fmol) (with RSDs ranging from 5.3-7.2%) which are 10-20-fold enhancement in detection sensitivity compared with conventional MALDI-MS. The optimal sample pH for highest extraction efficiency of insulin, ubiquitin and lysozyme from biological samples was observed at sample pH ∼ pI which could be due to the enhancement of hydrophobic interactions between proteins with the hydrophobic ligands of Pd-ODT NPs. In addition, we also found that with the addition of 1 M NaCl, signals could be significantly enhanced by using the current approach. It is an efficient, straightforward, sensitive and selective nanoprobe which can be widely applied for separation, enrichment and preconcentration of peptides or proteins from complex biological samples in proteome research.


Asunto(s)
Nanopartículas del Metal/química , Sondas Moleculares/química , Paladio/química , Espectrometría de Masa por Láser de Matriz Asistida de Ionización Desorción/métodos , Alcanos/química , Animales , Proteínas Bacterianas/química , Proteínas Bacterianas/aislamiento & purificación , Gramicidina/química , Gramicidina/aislamiento & purificación , Interacciones Hidrofóbicas e Hidrofílicas , Insulina/química , Insulina/aislamiento & purificación , Microscopía Electrónica de Transmisión , Proteínas/química , Proteínas/aislamiento & purificación , Ratas , Sensibilidad y Especificidad , Cloruro de Sodio/química , Espectroscopía Infrarroja por Transformada de Fourier , Compuestos de Sulfhidrilo/química , Tolueno/química
18.
Asian J Neurosurg ; 15(2): 285-292, 2020.
Artículo en Inglés | MEDLINE | ID: mdl-32656120

RESUMEN

CONTEXT: The postoperative quality and span of life in posterior fossa tumors (PFTs) is complicated by the residual disease, progression, recurrence, disabilities, and mortality. AIMS: The aim of this study is to analyze the link between histopathological type of tumor and outcome in an ethnic Himalayan population of India. SETTINGS AND DESIGN: The histopathological records of 410 out of 589 patients were compared with their clinical outcome up to the 1st postoperative year in a single center which amounts to regional epidemiological value of PFTs. MATERIALS AND METHODS: In this observational study, retrospectively postoperative records of 589 PFTs from November 1990 to December 2010 (20 years) were retrieved, scrutinized, and observed. The postoperative records of 410 patients with proved histopathological examination results were included. STATISTICAL ANALYSIS USED: The statistical law of variance was applied wherever necessary. RESULTS: About 63.2% of 410 operated PTFs were males while females predominated in meningiomas and pineoblastomas. About 31.7% of PFTs were children (below 18 years.). About 54.1% of the cases were histologically malignant. The residual tumors comprised 40.2%, and symptoms of disease progression occurred in 10.9%. The tumor recurrence occurred in 14.3% while 6.0% of the patients developed severe disability. The overall mortality was 11.4% up to the 1st postoperative year, with 18.9% in malignant patients. The first 1-year event-free survival (EFS) for all the patients was 66.0%. While the patients with malignancies had the first 1-year EFS of 47.7%, the histologically benign group had 87.7%. CONCLUSION: The first 1-year postoperative EFS of histologically benign and some malignant PFTs both in children and adults such as pilocytic astrocytomas, ependymomas, and pineoblastomas was much better (87.7%) than other malignant PTFs.

19.
Comp Immunol Microbiol Infect Dis ; 73: 101556, 2020 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-33035770

RESUMEN

Men's dominant ally, best defense defendant, therefore, the pre-eminent peril detector, dogs became a threat for the humanity inflicting a fatal disease of rabies. Dog bites and open garbage dumps became additional and apparent and are serious and sometimes underestimated public health dilemma in the Kashmir region. The aesthetic, primarily health care and psycho-sociological consequences of trauma caused by a dog bites repeatedly burden the standard of lifetime pertaining to the affected persons and their family. The present study was carried in Srinagar district. Diverse sampling plan / data collection strategies were formulated to fulfill the set of objectives. To assess the epidemiological pattern, secondary source of information viz. Shri Maharaja Hari Singh hospital, which shouldered the relevant cases, was utilized. Further, people perception of the subject was assessed using a predesigned interview schedule from respondents selected by appropriate methods. West zone had recorded the highest number of cases (28.95 %), then the south zone, followed by the north zone and the east zone. Majority victims were males (74.27 %) followed by females (25.72 %) [χ2 = 4.442, p = 0.219). Most of them belonged to 30-40 (26.88 %) year old groups, followed by 20-30 (22.36 %), 10-20 (16.03 %) and so on. The time of exposure of victims was evening (62.90 %) [χ2 = 30.342, p = 0.001]. The bulk number of cases had bite on legs (56.60 %). Majority had category 3 bites (70.16 %) and the majority had received immunoglobin (82.85 %) [χ2 = 29.56, p = 0.001]. The summer season (29.30 %) had also recorded the highest number of cases followed by autumn season (27.82 %) irrespective of each determinant. The Anti rabies clinic of SMHS has also recorded two rabies deaths during this period. The majority people (72.50 %) were illiterate and belonging to lower sections of society. About all those diseases that attack humans, rabies is an example of the best known in Srinagar. Its notoriety is peculiar when assessed on its influence medially, on humans who are belonging to the susceptible divisions of the society due to lack of discernment. The lack of complete perception might decipher into higher mortality linked to rabies.


Asunto(s)
Mordeduras y Picaduras/epidemiología , Enfermedades de los Perros/transmisión , Perros , Rabia/epidemiología , Adolescente , Adulto , Animales , Mordeduras y Picaduras/complicaciones , Niño , Preescolar , Enfermedades de los Perros/epidemiología , Femenino , Humanos , India/epidemiología , Lactante , Masculino , Persona de Mediana Edad , Salud Pública , Rabia/transmisión , Estaciones del Año , Factores Socioeconómicos , Encuestas y Cuestionarios , Adulto Joven
20.
Future Sci OA ; 7(3): FSO663, 2020 Dec 09.
Artículo en Inglés | MEDLINE | ID: mdl-33552543

RESUMEN

AIM: The implications of molecular biomarkers IDH1/2 mutations and MGMT gene promoter methylation were evaluated for prognostic outcome of glioma patients. MATERIALS & METHODS: Glioma cases were analyzed for IDH1/2 mutations and MGMT promoter methylation by DNA sequencing and methylation-specific PCR, respectively. RESULTS: Mutations found in IDH1/2 genes totaled 63.4% (N = 40) wherein IDH1 mutations were significantly associated with oligidendrioglioma (p = 0.005) and astrocytoma (p = 0.0002). IDH1 mutants presented more, 60.5% in MGMT promoter-methylated cases (p = 0.03). IDH1 mutant cases had better survival for glioblastoma and oligodendrioglioma (log-rank p = 0.01). Multivariate analysis confirmed better survival in MGMT methylation carriers (hazard ratio [HR]: 0.59; p = 0.031). Combination of both biomarkers showed better prognosis on temozolomide (p < 0.05). CONCLUSION: IDH1/2 mutations proved independent prognostic factors in glioma and associated with MGMT methylation for better survival.

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