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1.
Ann Hematol ; 103(3): 749-758, 2024 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-38242970

RESUMEN

We studied the incidence of relapse, transformation to myelodysplastic syndrome/acute myeloid leukemia, and survival in patients with aplastic anemia (AA) surviving more than 1 year after ATG/ALG-based immunosuppressive therapy (IST) between 1985 and 2020. Four-hundred seventy patients (413 adults and 57 children) were studied, and data were compared with 223 patients who underwent matched sibling donor transplant (MSD HSCT). Median follow-up is 50 months (12-359). Relapse occurred in 21.9% at a median time of 33.5 months (5-228) post IST. Twenty-six (5.5%) patients progressed to PNH, while 20 (4.3%) evolved to MDS/AML. Ten-year estimated overall survival (OS) is 80.9 ± 3% and was significantly better in patients without an event (85.1 ± 4%) compared to relapse (74.6% ± 6.2%) or clonal evolution (12.8% ± 11.8%) (p = 0.024). While the severity of AA (p = 0.011) and type of ATG (p = 0.028) used predicted relapse, only age at IST administration influenced clonal evolution (p = 0.018). Among HSCT recipients, relapse rates were 4.9% with no clonal evolution, and the 10-year OS was 94.5 ± 2%. In patients who survived 1 year following IST, outcomes were good except with clonal evolution to MDS/AML. These outcomes, however, were still inferior compared to matched sibling donor HSCT.


Asunto(s)
Anemia Aplásica , Enfermedad Injerto contra Huésped , Trasplante de Células Madre Hematopoyéticas , Leucemia Mieloide Aguda , Síndromes Mielodisplásicos , Adulto , Niño , Humanos , Enfermedad Injerto contra Huésped/etiología , Estudios Retrospectivos , Trasplante de Células Madre Hematopoyéticas/efectos adversos , Terapia de Inmunosupresión/efectos adversos , Síndromes Mielodisplásicos/terapia , Síndromes Mielodisplásicos/complicaciones , Leucemia Mieloide Aguda/terapia , Leucemia Mieloide Aguda/complicaciones , Recurrencia
2.
Haemophilia ; 30(2): 523-530, 2024 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-38247204

RESUMEN

INTRODUCTION: Flexion deformity of the knee is a common complication following recurrent haemarthrosis in persons with haemophilia (PWH) on episodic factor replacement therapy, restricting independent mobility. There is limited literature on the comprehensive management of this condition. This report provides the outcome of a staged multidisciplinary approach for the correction of knee flexion deformity (KFD) even in limited resource settings. PATIENTS AND METHODS: The data of 49 consecutive PWH who were treated for KFD were analysed. The approach included graded physical therapy (PT), followed by serial casting and/or mobilisation under anaesthesia (MUA). MUA was done in carefully selected knees. Surgical correction was opted when non-surgical methods failed. RESULTS: Of the 49 patients (55 knees), with a median KFD of 40 degrees (range: 10-90), 26/55 (47%) were corrected by graded PT. With serial casting, 9/19 (47%) knees had their KFD corrected. MUA was done for 11 knees of which five achieved correction (45%). Surgical correction was required for only seven knees (12.7%). Following this approach, KFD improved from 40 degrees (range: 10-90) to 15 degrees (range: 0-40), with only minor loss of flexion from 105 (range: 60-155) to 90 degrees (range: 30-150). Out of 55 KFD, 46 (83.6%) KFD were corrected; non-surgical, 39 (70.9%) and surgery, seven (12.7%). The remaining patients (nine KFD; 16.4%) were able to achieve their functional goal despite not meeting the correction criteria. CONCLUSION: This study shows that in PWH, functionally significant KFD correction can be achieved in about 71%, through non-surgical methods, even without prophylactic factor replacement.


Asunto(s)
Artroplastia de Reemplazo de Rodilla , Hemofilia A , Humanos , Artroplastia de Reemplazo de Rodilla/métodos , Resultado del Tratamiento , Estudios Retrospectivos , Articulación de la Rodilla , Rango del Movimiento Articular
3.
Eur J Haematol ; 112(5): 810-818, 2024 May.
Artículo en Inglés | MEDLINE | ID: mdl-38213291

RESUMEN

INTRODUCTION: During normal aging, telomeric DNA is gradually lost in dividing somatic cells, and critically short telomeres lead to replicative senescence, apoptosis, or chromosomal instability. We studied telomere length in bone marrow failure syndromes (BMFS) compared to normal healthy population. METHODS: Peripheral blood was collected from the participants, and genomic DNA was extracted. Relative telomere length was measured using a quantitative polymerase chain reaction. Statistical analysis was performed using SPSS and GraphPad Prism 8.2 software. RESULTS: The median age of normal Indian population was 31 (0-60) years. As expected, telomere length (TL) showed a decline with age and no difference in TL between males and females. The median age of 650 patients with aplastic anemia (AA) was 30 (1-60) years. TL was significantly shorter in patients with AA compared to healthy controls (p < .001). In FA and MDS patients, TL was significantly shorter than age-matched healthy controls (p = .028; p < .001), respectively. There was no difference between the median TL in age-matched AA and FA patients (p = .727). However, patients with MDS had shorter TL than age-matched AA (p = .031). CONCLUSION: TL in BMF syndrome patients was significantly shorter than age-matched healthy controls.


Asunto(s)
Anemia Aplásica , Masculino , Femenino , Humanos , Adulto , Persona de Mediana Edad , Anemia Aplásica/diagnóstico , Anemia Aplásica/genética , Trastornos de Fallo de la Médula Ósea , Telómero/genética , Acortamiento del Telómero , ADN
4.
Stat Med ; 43(5): 1019-1047, 2024 Feb 28.
Artículo en Inglés | MEDLINE | ID: mdl-38155152

RESUMEN

Birth defects and their associated deaths, high health and financial costs of maternal care and associated morbidity are major contributors to infant mortality. If permitted by law, prenatal diagnosis allows for intrauterine care, more complicated hospital deliveries, and termination of pregnancy. During pregnancy, a set of measurements is commonly used to monitor the fetal health, including fetal head circumference, crown-rump length, abdominal circumference, and femur length. Because of the intricate interactions between the biological tissues and the US waves mother and fetus, analyzing fetal US images from a specialized perspective is difficult. Artifacts include acoustic shadows, speckle noise, motion blur, and missing borders. The fetus moves quickly, body structures close, and the weeks of pregnancy vary greatly. In this work, we propose a fetal growth analysis through US image of head circumference biometry using optimal segmentation and hybrid classifier. First, we introduce a hybrid whale with oppositional fruit fly optimization (WOFF) algorithm for optimal segmentation of segment fetal head which improves the detection accuracy. Next, an improved U-Net design is utilized for the hidden feature (head circumference biometry) extraction which extracts features from the segmented extraction. Then, we design a modified Boosting arithmetic optimization (MBAO) algorithm for feature optimization to selects optimal best features among multiple features for the reduction of data dimensionality issues. Furthermore, a hybrid deep learning technique called bi-directional LSTM with convolutional neural network (B-LSTM-CNN) for fetal growth analysis to compute the fetus growth and health. Finally, we validate our proposed method through the open benchmark datasets are HC18 (Ultrasound image) and oxford university research archive (ORA-data) (Ultrasound video frames). We compared the simulation results of our proposed algorithm with the existing state-of-art techniques in terms of various metrics.


Asunto(s)
Desarrollo Fetal , Ultrasonografía Prenatal , Embarazo , Femenino , Humanos , Ultrasonografía Prenatal/métodos , Biometría , Algoritmos , Redes Neurales de la Computación
5.
Mol Biol Rep ; 51(1): 155, 2024 Jan 22.
Artículo en Inglés | MEDLINE | ID: mdl-38252331

RESUMEN

The emergence of superbugs like methicillin-resistant Staphylococcus aureus exposed the limitations of treating microbial infections using antibiotics. At present, the discovery of novel and convincing therapeutic methods are being executed increasingly as possible substitutes to conventional antibiotic therapies. The quorum sensing helps Staphylococcus aureus become more viable through their signaling mechanisms. In recent years, targeting the prominent factors of quorum sensing has obtained remarkable attention as a futuristic approach to dealing with bacterial pathogenicity. The standard antibiotic therapy intends to inhibit the organism by targeting specific molecules and afford a chance for the evolution of antibiotic resistance. This prompts the development of novel therapeutic strategies like inhibiting quorum sensing that can limit bacterial virulence by decreasing the selective pressure, thereby restricting antibiotic resistance evolution. This review furnishes new insights into the accessory gene regulator quorum sensing in Staphylococcus aureus and its inhibition by targeting the genes that regulate the operon. Further, this review comprehensively explores the inhibitors reported up to date and their specific targets and discusses their potentially ineffective alternative therapy against methicillin-resistant Staphylococcus aureus.


Asunto(s)
Staphylococcus aureus Resistente a Meticilina , Infecciones Estafilocócicas , Humanos , Staphylococcus aureus , Staphylococcus aureus Resistente a Meticilina/genética , Percepción de Quorum , Infecciones Estafilocócicas/tratamiento farmacológico , Antibacterianos/farmacología , Antibacterianos/uso terapéutico
6.
Environ Res ; 246: 118089, 2024 Apr 01.
Artículo en Inglés | MEDLINE | ID: mdl-38160970

RESUMEN

Cyclones can cause devastating impacts, including strong winds, heavy rainfall, storm surges, and flooding. The aftermath includes infrastructure damage, loss of life, displacement of communities, and ecological disruptions. Timely response and recovery efforts are crucial to minimize the socio-economic and environmental consequences of cyclones. To accelerate the time-consuming risk assessment process, particularly in geographically diverse regions, a blend of multi-criteria decision-making and machine learning models was utilized. This novel approach swiftly assessed cyclone risk and the impact of the Gaja cyclone in Nagapattinam, India. The method involved assigning weights to distinct criteria, unveiling notable vulnerability aspects like elevation, slope, proximity to the coast, distance from cyclone tracts, Lu/Lc, population density, proximity to cyclone shelters, household density, accessibility to healthcare facilities, NDVI, and levels of awareness. Daddavari, Ettugudi, Kodikarai, Vedharanyam, Velankanni, and Thirupoondi face high/extreme cyclone risk. Nagore, Nagapattinam, Pillai, Enangudi, and Sannanllur have low/no threat. To further enhance the precision of the study, machine learning algorithms like SVM, SAM, and MLC were deployed. These models were instrumental in generating pre- and post-cyclone land use maps. The influence of Gaja cyclones effects shows decreasing of agriculture land from 34% to 30%, aquaculture increase 1%, barren land decrease from 8% to 6%, Built-up land decrease from 15% to 13%, land with scrub and salt pan also decrease from 21% to 17% and 10%-8%. Mostly effect of Gaja cyclone is dramatic increase of water body from 8% to 21%. Conducting cyclone risk zone analysis and pre/post-cyclone Land Use Land Cover (LULC) detection in Nagapattinam offers valuable insights for disaster preparedness, infrastructure planning, and climate resilience. This study can enhance understanding of vulnerability and aid in formulating strategies to mitigate cyclone impacts, ensuring sustainable development in the region.


Asunto(s)
Tormentas Ciclónicas , Desastres , India , Sistemas de Información Geográfica , Algoritmos
7.
Clin Transplant ; 37(9): e15010, 2023 09.
Artículo en Inglés | MEDLINE | ID: mdl-37144852

RESUMEN

INTRODUCTION: Total marrow lymphoid irradiation (TMLI) can deliver higher doses of irradiation without increasing toxicity compared to Total body irradiation (TBI). METHODS: Twenty adult patients undergoing hematopoietic stem cell transplantation (HSCT) for acute lymphoblastic leukemia (ALL) and chronic myeloid leukemia with lymphoid blast crises (CML-LBC) received TMLI and cyclophosphamide for conditioning. Ten patients each received 13.5 or 15 Gy of TMLI. The graft source was peripheral blood stem cells in all, and donors included matched related (n = 15), haplo-identical (n = 3) or matched unrelated donors (n = 2). RESULTS: The median cell dose infused was 9 × 106 CD34/kg (range 4.8-12.4). Engraftment occurred in all (100%) at a median of 15 days (range: 14-17). Toxicity was low with hemorrhagic cystitis seen in two but no sinusoidal obstruction syndrome. Acute GVHD occurred in 40% while chronic GVHD was seen in 70.5%. Viral infections were seen in 55% while blood stream bacterial infections occurred in 20% and invasive fungal disease (IFD) in 10%. The Day 100 non-relapse mortality (NRM) was 10%. At a median follow up of 25 months (range 2-48), two patients have relapsed. Overall survival at 2 years is 80% while the disease-free survival is 75%. CONCLUSIONS: The combination of TMLI and cyclophosphamide for myeloablative conditioning is associated with low toxicity and favorable early outcomes in patients undergoing HSCT for ALL and CML-LBC.


Asunto(s)
Enfermedad Injerto contra Huésped , Trasplante de Células Madre Hematopoyéticas , Leucemia Mielógena Crónica BCR-ABL Positiva , Leucemia Mieloide Aguda , Leucemia-Linfoma Linfoblástico de Células Precursoras , Adulto , Humanos , Médula Ósea/efectos de la radiación , Crisis Blástica , Irradiación Linfática , Ciclofosfamida/uso terapéutico , Leucemia Mielógena Crónica BCR-ABL Positiva/etiología , Trasplante de Células Madre Hematopoyéticas/efectos adversos , Leucemia-Linfoma Linfoblástico de Células Precursoras/terapia , Leucemia-Linfoma Linfoblástico de Células Precursoras/etiología , Enfermedad Injerto contra Huésped/etiología , Enfermedad Crónica , Acondicionamiento Pretrasplante/efectos adversos , Leucemia Mieloide Aguda/etiología , Estudios Retrospectivos
8.
J Med Virol ; 94(9): 4542-4547, 2022 09.
Artículo en Inglés | MEDLINE | ID: mdl-35577570

RESUMEN

Gene therapy using an adeno-associated virus (AAV) vector offers a new treatment option for individuals with monogenetic disorders. The major bottleneck is the presence of pre-existing anti-AAV antibodies, which impacts its use. Even very low titers of neutralizing antibodies (NAb) to capsids from natural AAV infections have been reported to inhibit the transduction of intravenously administered AAV in animal models and are associated with limited efficacy in human trials. Assessing the level of pre-existing NAb is important for determining the primary eligibility of patients for AAV vector-based gene therapy clinical trials. Techniques used to screen AAV-antibodies include AAV capsid enzyme-linked immunosorbent assay (ELISA) and transduction inhibition assay (TIA) for detecting total capsid-binding (TAb) and Nab, respectively. In this study, we screened 521 individuals with hemophilia A from India for TAb and NAb using ELISA and TIA, respectively. The prevalence of TAb and NAb in hemophilia A patients from India were 96% and 77.5%, respectively. There was a significant increase in anti-AAV3 NAb prevalence with age in the hemophilia A patient group from India. There was a trend in anti-AAV3 TAb positivity between the pediatric age group (94.4%) and the adult age group (97.4%).


Asunto(s)
Anticuerpos Antivirales , Hemofilia A , Adulto , Animales , Anticuerpos Neutralizantes , Niño , Dependovirus/genética , Vectores Genéticos , Hemofilia A/epidemiología , Hemofilia A/inmunología , Hemofilia A/terapia , Humanos , Prevalencia , Serogrupo
9.
Trop Anim Health Prod ; 54(1): 57, 2022 Jan 15.
Artículo en Inglés | MEDLINE | ID: mdl-35031870

RESUMEN

The loop-mediated isothermal amplification (LAMP) was standardized for rapid detection of Dichelobacter nodosus and Fusobacterium necrophorum. A total of 250 foot swabs were screened from sheep (200) and goats (50) from different districts of Rayalaseema, viz., Chittoor, Nellore, Kadapa, and Anantapur. Out of 250 samples 75 (30.0%) and 85 (34.0%) were positive for D. nodosus and F. necrophorum, respectively. All the 250 samples were screened individually for both the organisms by LAMP. Among them, 104 (41.6%) were found to be positive for D. nodosus and 120 (48.0%) were positive for F. necrophorum. The efficacy of LAMP in terms of sample DNA detection limit was compared with the PCR by using standard dilutions of DNA extracted from D. nodosus and F. necrophorum cultures. The detection limit was found to be higher than PCR for both the organisms. The sensitivity of LAMP is compared with PCR by targeting 16S rRNA gene of D. nodosus and lktA gene of F. necrophorum. In case of D. nodosus, out of 250 samples, 75 (30.0%) were positive by PCR and 104 (41.6%) were positive by LAMP. Among 250 samples, 85 (34.0%) were positive by PCR and 120 (48.0%) were positive by LAMP in case of F. necrophorum. The LAMP was found to be more sensitive than PCR in detecting the organisms with high statistical significance.


Asunto(s)
Infecciones por Fusobacterium , Enfermedades de las Cabras , Infecciones por Bacterias Gramnegativas , Enfermedades de las Ovejas , Animales , Infecciones por Fusobacterium/veterinaria , Enfermedades de las Cabras/diagnóstico , Cabras , Infecciones por Bacterias Gramnegativas/veterinaria , Técnicas de Diagnóstico Molecular , Técnicas de Amplificación de Ácido Nucleico , ARN Ribosómico 16S/genética , Estándares de Referencia , Ovinos , Enfermedades de las Ovejas/diagnóstico
10.
J Radiother Pract ; 21(3): 403-410, 2022 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-36016862

RESUMEN

Background: Induction chemotherapy (iC) followed by concurrent chemoradiation has been shown to improve overall survival (OS) for locally advanced pancreatic cancer (LAPC). However, the survival benefit of stereotactic body radiation therapy (SBRT) versus conventionally fractionated radiation therapy (CFRT) following iC remains unclear. Methods: The National Cancer Database (NCDB) was queried for primary stage III, cT4N0-1M0 LAPC (2004-2015). Kaplan-Meier analysis, Cox proportional hazards method, and propensity score matching were used. Results: Among 872 patients, 738 patients underwent CFRT and 134 patients received SBRT. Median follow-up was 24.3 months and 22.9 months for the CFRT and SBRT cohorts, respectively. The use of SBRT showed improved survival in both the multivariate analysis (HR 0.78, p=0.025) and 120 propensity-matched pairs (median OS 18.1 vs 15.9 months, p=0.004) compared to the CFRT. Conclusion: This NCDB analysis suggests survival benefit with the use of SBRT versus CFRT following iC for the LAPC.

11.
Br J Haematol ; 188(6): 930-934, 2020 03.
Artículo en Inglés | MEDLINE | ID: mdl-31811734

RESUMEN

Treatment of Hodgkin lymphoma (HL) has evolved with risk-stratified therapy based on PET-CT scan at multiple timepoints. In a resource constraint setting even a single PET-CT scan ($400) is inaccessible to many patients, who are re-assessed with only clinical examination, abdominal ultrasonogram and/or x-ray (C/U/X) ($10). To compare clinical outcomes in patients with HL who have had suboptimal imaging after completion of chemotherapy for HL, with those who had a CT or PET-CT, 283 patients were treated for HL from 2011 to 2015, and 268 patients completed six cycles of ABVD therapy with response assessment modality by CT/PET in 185 patients and by C/U/X in 83. There was no difference in the number of patients with advanced (64·1% vs. 61·1%; P = 0·650) or bulk disease (8·1% vs. 7·2%). A significantly higher number of patients in the CT/PET group received IFRT (25·4% vs. 7·7%; P = 0·0005). The three-year overall survival and progression-free survival of all treated patients (n = 283) was 83·5 ± 2·3% and 76·7 ± 2·6% respectively [median follow-up 36 months (range 2-93)]. At three years, the overall relapse-free survival (RFS) was 80·1 ± 2·5%, with RFS of 77 ± 3·2% vs. 85 ± 4·0% in the CT/PET group and C/U/X groups respectively (P = 0·349). There was no difference in RFS between the two groups either in early-stage disease (88·1 ± 4·6% vs. 91·8 ± 5·6%; P = 0·671) or late-stage disease (73·9 ± 4·8% vs. 81·3 ± 6·0%; P = 0·747). The only significant factor adversely affecting RFS was advanced disease (P = 0·004). Factors not affecting RFS were age (P = 0·763), sex (P = 0·925), bulk disease (P = 0·889) and imaging modality (P = 0·352). There was no difference in relapse rates between patients who had suboptimal imaging compared to those who had a PET/CT. It is possible to use these basic imaging modalities when resources are a constraint, with acceptable outcomes.


Asunto(s)
Enfermedad de Hodgkin/diagnóstico por imagen , Adulto , Femenino , Enfermedad de Hodgkin/patología , Humanos , Masculino , Estudios Retrospectivos
12.
Transpl Infect Dis ; 22(3): e13273, 2020 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-32107829

RESUMEN

BACKGROUND: With the increasing incidence of multidrug-resistant (MDR) organisms and high mortality rates associated with these infections, we describe the spectrum of the major drug-resistant pathogens identified in fecal surveillance, and re-visit the use of fecal surveillance in predicting infection with these organisms post-allogeneic stem cell transplant. METHODS: Data from allogeneic stem cell transplant recipients with common drug-resistant strains of bacteria in fecal surveillance (Escherichia coli, Klebsiella spp., and Enterococcus spp.) were compared with recipients who did not have the same in fecal surveillance cultures. Baseline characteristics and post-transplant outcomes including similar drug resistance in blood cultures, severe sepsis, and 100-day transplant-related mortality were compared. Multivariate analysis using logistic regression model was used to determine independent predictors of outcome. RESULTS: In 232 transplants, the prevalence of common drug-resistant isolates in fecal surveillance cultures was 57.7% (134 out of 232 patients-with a single isolate in 115 and ≥2 isolates in the remaining 19 patients. A total of 164 drug-resistant isolates were obtained from 134 patients. Of the 164 isolates, 133 (81%) were positive for ESBL screening, 19 (11.5%) for carbapenem-resistant organisms (CRO) screening, 12 (7.3%) for VRE screening. Patients who had common drug-resistant pathogens detected in fecal surveillance have significantly higher subsequent blood culture positivity with drug resistance, as well as higher 100-day mortality. Factors influencing 100-day mortality included patient's age (P = .001), drug resistance positivity in blood (P < .001), drug resistance in fecal surveillance (P = .011), use of an alternate donor (other than fully matched sibling) (P < .001), GVHD grade 3-4 (P < .001), and severe sepsis (P < .001). On multivariate analysis, only use of an alternate donor (0.024), severe sepsis (P < .001), and grade 3-4 GVHD (P < .001) retained significance in predicting 100-day mortality. CONCLUSION: Organisms resistant to 3rd generation cephalosporins are frequently seen on fecal surveillance in the pre-transplant setting and are associated with a higher incidence of drug-resistant organisms in subsequent blood cultures (not limited to the same drug resistance pattern as seen in fecal surveillance). Drug-resistant organisms in fecal surveillance are associated with poorer outcomes following allogeneic stem cell transplant and may be used as a guide to identify patients at risk of subsequently developing a drug-resistant organism in blood.


Asunto(s)
Bacteriemia/diagnóstico , Bacterias/efectos de los fármacos , Farmacorresistencia Bacteriana Múltiple , Heces/microbiología , Trasplante de Células Madre Hematopoyéticas/efectos adversos , Adolescente , Adulto , Bacteriemia/mortalidad , Bacterias/clasificación , Bacterias/aislamiento & purificación , Niño , Preescolar , Programas de Detección Diagnóstica , Femenino , Humanos , Lactante , Masculino , Persona de Mediana Edad , Evaluación de Procesos y Resultados en Atención de Salud , Estudios Retrospectivos , Sepsis/etiología , Sepsis/mortalidad , Adulto Joven
13.
Niger J Clin Pract ; 23(7): 1026-1029, 2020 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-32620736

RESUMEN

When teeth have responded poorly to conventional endodontic treatment or when they cannot be treated adequately by nonsurgical means, surgical endodontics remains the treatment of choice. Healing of apical lesions occurs by repair, most of the time. "Repair is the healing of a wound by tissue that does not fully restore the architecture or function of the affected unit". Since this is not ideal, newer regenerative procedures that aim to restore lost tissue have been introduced. ß -Tricalcium phosphate is an alloplastic bone graft material that forms a scaffold for closing the bony defect. It is osteoconductive. Platelet-rich plasma (PRP) and platelet-rich fibrin (PRF) are platelet concentrates, rich in growth factors and they promote regeneration by osteoinduction. This article describes cases of bone augmentation with a combination of PRP + ß -TCP and PRF + ß -TCP for treatment of the chronic periapical lesion. The cases were followed for six months and one year and healing was evaluated quantitatively using cone beam computed tomography.


Asunto(s)
Fosfatos de Calcio/uso terapéutico , Tomografía Computarizada de Haz Cónico/métodos , Fibrina Rica en Plaquetas , Plasma Rico en Plaquetas , Adulto , Regeneración Ósea , Trasplante Óseo , Femenino , Humanos , Radiografía Dental , Ápice del Diente/diagnóstico por imagen , Ápice del Diente/cirugía , Cuello del Diente/patología , Resultado del Tratamiento , Cicatrización de Heridas
14.
Curr Opin Cardiol ; 34(5): 531-535, 2019 09.
Artículo en Inglés | MEDLINE | ID: mdl-31219875

RESUMEN

PURPOSE OF REVIEW: Despite the significant decline in cardiovascular disease (CVD) rates owing to recognition of risk factors, timely and appropriate therapy for acute events, and improved medical therapy, it remains the leading cause of death globally. Novel risk factors and modifications must be considered in the development and progression of CVD. The purpose of this review is to delineate the association between psychological and mental stress and CVD. RECENT FINDINGS: Stress has been implicated as a significant risk factor in both the acceleration of atherosclerosis and a trigger for acute CVD events. In the last decade, a growing body of evidence has been accumulated on the biological, neuroanatomical, and neurophysiological effects of stress and the benefits of cultivating resilience. The pathophysiology of stress is complex and involves the brain, autonomic nervous system, and the endocrine system, with associated metabolic, inflammatory, and hemostatic abnormalities. SUMMARY: Most practice guidelines do not recognize the importance of screening for stress in primary and secondary CVD prevention. There is a paucity of large, scalable, and cost-effective approaches for stress intervention. Two potential strategies are required for reducing stress: strategies that are population-based, and narrower targeted strategies for clinical practice.


Asunto(s)
Enfermedades Cardiovasculares/prevención & control , Trastornos Mentales/fisiopatología , Estrés Psicológico/fisiopatología , Estrés Psicológico/terapia , Enfermedades Cardiovasculares/etiología , Enfermedades Cardiovasculares/fisiopatología , Enfermedades Cardiovasculares/psicología , Humanos , Tamizaje Masivo , Trastornos Mentales/complicaciones , Resiliencia Psicológica , Factores de Riesgo , Estrés Psicológico/complicaciones , Estrés Psicológico/diagnóstico
15.
Haemophilia ; 25(1): 67-74, 2019 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-30427567

RESUMEN

INTRODUCTION: Factor replacement therapy in treatment of haemophilia A is complicated by the production of neutralising antibodies known as inhibitors. The formation of inhibitors is multifactorial being associated with both genetic and environmental factors. AIM: To document the prevalence of inhibitors in severe haemophilia in the community where most patients receive only infrequent episodic replacement therapy and evaluate the factors which could be contributing to it. METHODS: Community based camps were conducted in different parts of the country. Patients were assessed through a structured questionnaire and blood samples were obtained for laboratory evaluation of inhibitors and defined immunological parameters. RESULTS: Inhibitors were present in 87/447 (19.5%) of the evaluated patients. High-titre inhibitor (>5 Bethesda Units [BU]) was identified in 31 (35.6%) patients. HLA DRB1-13-positive cases (RR = 2.04; 95% CI 1.06-3.911; P = 0.033) had an increased risk of inhibitor formation which was retained in the high-titre subset. A decreased risk of inhibitor formation was noted with heterozygous IL4-590 C/T allele (RR = 0.22; 95% CI 0.108-0.442: P = 0.000). There were no significant correlations between any of the evaluated environmental factors and the development of inhibitors in this study. CONCLUSION: The overall prevalence of inhibitors in patients with severe haemophilia A is similar to that reported among patients receiving regular replacement therapy. The data from this study, limited by its retrospective and cross-sectional study design, would suggest that genetic rather than environmental are more likely to impact the development of inhibitors.


Asunto(s)
Factor VIII/antagonistas & inhibidores , Hemofilia A/patología , Isoanticuerpos/sangre , Adolescente , Adulto , Anciano , Alelos , Niño , Preescolar , Haplotipos , Hemofilia A/epidemiología , Humanos , India/epidemiología , Interleucina-4/genética , Masculino , Persona de Mediana Edad , Tiempo de Tromboplastina Parcial , Polimorfismo de Nucleótido Simple , Prevalencia , Tiempo de Protrombina , Adulto Joven
16.
Circ J ; 83(6): 1293-1301, 2019 05 24.
Artículo en Inglés | MEDLINE | ID: mdl-30996150

RESUMEN

BACKGROUND: Coronary computed tomography angiography (cCTA)-derived fractional flow reserve (FFRCT) is a promising diagnostic method for the evaluation of coronary artery disease (CAD). However, clinical data regarding FFRCTin Japan are scarce, so we assessed the clinical impact of using FFRCTin a Japanese population.Methods and Results:The ADVANCE registry is an international prospective FFRCTregistry of patients suspected of CAD. Of 5,083 patients, 1,829 subjects enrolled from Japan were analyzed. Demographics, symptoms, cCTA, FFRCT, treatment strategy, and 90-day major cardiovascular events (MACE) were assessed. Reclassification of treatment strategy between cCTA alone and cCTA+FFRCToccurred in 55.8% of site investigations and in 56.9% in the core laboratory analysis. Patients with positive FFR (FFRCT≤0.80) were less likely to have non-obstructive disease on invasive coronary angiography than patients with negative FFR (FFRCT>0.80) (20.5% vs. 46.1%, P=0.0001). After FFRCT, 67.0% of patients with positive results underwent revascularization, whereas 96.1% of patients with negative FFRCTwere medically treated. MACE occurred in 5 patients with positive FFRCT, but none occurred in patients with negative FFRCTwithin 90 days. CONCLUSIONS: In this Japanese population, FFRCTmodified the treatment strategy in more than half of the patients. FFRCTshowed potential for stratifying patients suspected of CAD properly into invasive or non-invasive management pathways.


Asunto(s)
Angiografía por Tomografía Computarizada , Enfermedad de la Arteria Coronaria , Reserva del Flujo Fraccional Miocárdico , Anciano , Anciano de 80 o más Años , Pueblo Asiatico , Enfermedad de la Arteria Coronaria/diagnóstico por imagen , Enfermedad de la Arteria Coronaria/epidemiología , Enfermedad de la Arteria Coronaria/fisiopatología , Enfermedad de la Arteria Coronaria/cirugía , Humanos , Japón , Persona de Mediana Edad , Estudios Prospectivos , Sistema de Registros
17.
Clin Radiol ; 74(11): 897.e9-897.e16, 2019 Nov.
Artículo en Inglés | MEDLINE | ID: mdl-31474302

RESUMEN

AIM: To present a new protocol to optimise ultrasound (US) assessment of haemophilic arthropathy. MATERIALS AND METHODS: Ultrasound of haemophilic arthropathy joints was performed using three different ultrasound protocols, namely, the Toronto-Vellore Comprehensive Ultrasound (TVC-US) protocol, the Haemophilia Early Arthropathy Detection with Ultrasound (HEAD-US), and the newly developed Universal Simplified Ultrasound (US-US) protocol. Synovial hypertrophy, haemosiderin deposition, effusion, erosion, and cartilage loss were evaluated in 20 joints. The reliability and diagnostic efficiency of these protocols was compared using magnetic resonance imaging (MRI). RESULTS: The correlation between the TVC-US and US-US protocols for synovial hypertrophy was excellent: kappa significance (KS) was 1, but was substantial (KS=0.65) with the HEAD-US protocol. For effusion, both the TVC-US and the HEAD-US protocols had substantial correlation with the US-US protocol (KS=0.7 and 0.6 respectively). The correlation for erosion and cartilage loss was excellent between the TVC-US and the US-US with MRI (KS=1), but poor (KS=0) with the HEAD-US protocol. The US-US protocol also had good interobserver agreement (KS=1). CONCLUSION: The accuracy of the US-US protocol is comparable to the TVC-US protocol and MRI and is superior to the HEAD-US protocol in the assessment of haemophilic arthropathy.


Asunto(s)
Articulación del Tobillo/diagnóstico por imagen , Hemofilia A/complicaciones , Articulación de la Rodilla/diagnóstico por imagen , Disco de la Articulación Temporomandibular/diagnóstico por imagen , Adolescente , Enfermedades de los Cartílagos/diagnóstico por imagen , Enfermedades de los Cartílagos/patología , Niño , Protocolos Clínicos , Tejido Conectivo/diagnóstico por imagen , Hemosiderina/análisis , Humanos , Hipertrofia/diagnóstico por imagen , Imagen por Resonancia Magnética , Osteocondrosis/diagnóstico por imagen , Osteocondrosis/patología , Estudios Prospectivos , Membrana Sinovial/diagnóstico por imagen , Membrana Sinovial/patología , Disco de la Articulación Temporomandibular/patología , Factores de Tiempo , Ultrasonografía , Adulto Joven
18.
Eur Heart J ; 44(36): 3401-3402, 2023 Sep 21.
Artículo en Inglés | MEDLINE | ID: mdl-37523655
19.
J Med Syst ; 43(3): 73, 2019 Feb 12.
Artículo en Inglés | MEDLINE | ID: mdl-30746555

RESUMEN

As is eminent, lung cancer is one of the death frightening syndromes among people in present cases. The earlier diagnosis and treatment of lung cancer can increase the endurance rate of the affected people. But, the structure of the cancer cell makes the diagnosis process more challenging, in which the most of the cells are superimposed. By adopting the efficient image processing techniques, the diagnosis process can be made effective, earlier and accurate, where the time aspect is extremely decisive. With those considerations, the main objective of this work is to propose a region based Fuzzy C-Means Clustering (FCM) technique for segmenting the lung cancer region and the Support Vector Machine (SVM) based classification for diagnosing the cancer stage, which helps in clinical practice in significant way to increase the morality rate. Moreover, the proposed ECM-CSD (Efficient Classification Model for Cancer Stage Diagnosis) uses Computed Tomography (CT) lung images for processing, since it poses higher imaging sensitivity, resolution with good isotopic acquisition in lung nodule identification. With those images, the pre-processing has been made with Gaussian Filter for smoothing and Gabor Filter for enhancement. Following, based on the extracted image features, the effective segmentation of lung nodules is performed using the FCM based clustering. And, the stages of cancer are identified based on the SVM classification technique. Further, the model is analyzed with MATLAB tool by incorporating the LIDC-IDRI lung CT images clinical dataset. The comparative experiments show the efficiency of the proposed model in terms of the performance evaluation factors like increased accuracy and reduced error rate.


Asunto(s)
Procesamiento de Imagen Asistido por Computador/métodos , Neoplasias Pulmonares/diagnóstico por imagen , Neoplasias Pulmonares/patología , Máquina de Vectores de Soporte , Tomografía Computarizada por Rayos X/métodos , Algoritmos , Lógica Difusa , Humanos , Estadificación de Neoplasias , Interpretación de Imagen Radiográfica Asistida por Computador/métodos , Sensibilidad y Especificidad
20.
Biol Blood Marrow Transplant ; 24(1): 103-108, 2018 01.
Artículo en Inglés | MEDLINE | ID: mdl-29032269

RESUMEN

Graft rejection (GR) after allogeneic stem cell transplantation (allo-SCT) occurs in 10% to 20% of patients with ß-thalassemia major (TM). There are limited data on the clinical profile and long-term outcome of patients who have had a GR. We undertook a retrospective analysis of patients who had a graft failure after allo-SCT for TM at our center. From October 1991 to June 2016, 55 of 506 patients (11%) transplanted for TM had a graft failure. An additional 7 patients with graft failure after allo-SCT done at other centers were referred to us for a second transplant. The median age was 8 years (range, 1 to 19), and there were 38 males (61.2%). Thirty-two patients (52.4%) were primary graft failures (15 with aplasia and 17 with autologous recovery) and 30 (47.6%) were secondary graft failures (5 with aplasia and 25 with autologous recovery). On conventional risk stratification 40 patients (64.5%) were class III. Seventeen patients (53.12%) with primary graft failure and 16 (53.3%) with secondary graft failure did not receive a second transplant. Twenty-nine patients (46%) with GR underwent a second allo-SCT. With the exception of 1 patient (first allo-SCT with an unrelated cord blood product), the donor for the second transplant was the same as the first transplant. Conditioning regimen for the second SCT was busulfan-based myeloablative (MAC) in 7 patients (24%), treosulfan-based MAC in 12 patients (41.3%), and the remaining received non-MAC regimens in view of pancytopenia and perceived inability to tolerate MAC. None of the patients conditioned with a treosulfan-based regimen had a GR, although 1 patient died with complications secondary to chronic graft-versus-host disease. Of the remaining 17 patients, 10 died after the second GR and 3 of regimen-related toxicity. Four are alive, of which 1 has recurrent TM and the rest are well and transfusion independent at 55, 80, and 204 months, respectively, from second transplant (all busulfan-based MAC). On a univariate analysis a nontreosulfan-based conditioning regimen and time from GR to second transplant of <1 year was significantly associated with an adverse impact. However, on a multivariate analysis only a nontreosulfan-based regimen was associated with a significant adverse impact on event-free survival (HR, 11.5; 95% CI, 1.13 to 116.4; P = .039). In conclusion, there has been a significant improvement in clinical outcomes in our experience with the use of a treosulfan-based reduced-toxicity MAC regimen for second allo-SCT for TM. It would be reasonable, where feasible, to defer the second transplant by a year after the first GR.


Asunto(s)
Busulfano/análogos & derivados , Trasplante de Células Madre Hematopoyéticas/métodos , Acondicionamiento Pretrasplante/métodos , Talasemia beta/terapia , Adolescente , Busulfano/uso terapéutico , Niño , Preescolar , Femenino , Rechazo de Injerto , Trasplante de Células Madre Hematopoyéticas/mortalidad , Humanos , Lactante , Masculino , Reoperación , Acondicionamiento Pretrasplante/mortalidad , Resultado del Tratamiento , Adulto Joven , Talasemia beta/mortalidad
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