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1.
J Assoc Physicians India ; 71(5): 11-12, 2023 May.
Artigo em Inglês | MEDLINE | ID: mdl-37355823

RESUMO

BACKGROUND: Anemia-causing fever has been described in patients with megaloblastic anemia. Although the exact mechanism of this is unknown, high-grade fever is relatively less reported. MATERIALS AND METHODS: This prospective observational study included all new cases of megaloblastic anemia presenting with febrile illness (>101°F) during a 3-year period. Patients with existing anemia, comorbidities, and other causes of macrocytosis were excluded. A detailed evaluation for megaloblastic anemia and workup for excluding tropical infections was done. The patients were treated with parenteral vitamin B12, folic acid, and other hematinics. RESULTS: Around 24 cases of megaloblastic anemia presenting with high-grade fever were included, with 14 (58.3%) males, mean duration of fever 7.7 days (4-18 days), and 09 (37.5%) having temperature >103°F. The mean hemoglobin (Hb) was 8.15 g/dL (3.7-11.1 g/dL), the mean corpuscular volume (MCV) was 111 ± 7.8 fL, 18 (75%) had unconjugated hyperbilirubinemia, the mean lactate dehydrogenase (LDH) was 814 ± 24 IU/L, and 21 (87.5%) had low B12 or folate levels. Most showed good therapeutic response to B12 or folic acid with defervescence in 1-5 days (mean 2.6 days) and improvement in lab parameters in 1 week. The study population was divided into those with temperature ≥103°F, and temperature <103°F it was seen that there was a significant association (p < 0.05) with leucocyte count of ≤3000/cumm, and MCV ≥110 fL, in patients with temperature ≥103°F Conclusion: Megaloblastic anemia should be considered in the differentials of a patient presenting with a febrile illness with no clinical localization and a negative initial fever workup. Early identification and prompt therapy of this easily treatable disorder are very essential.


Assuntos
Anemia Megaloblástica , Anemia , Deficiência de Ácido Fólico , Deficiência de Vitamina B 12 , Masculino , Humanos , Feminino , Deficiência de Vitamina B 12/complicações , Deficiência de Vitamina B 12/diagnóstico , Deficiência de Vitamina B 12/tratamento farmacológico , Anemia Megaloblástica/diagnóstico , Anemia Megaloblástica/tratamento farmacológico , Anemia Megaloblástica/epidemiologia , Ácido Fólico/uso terapêutico , Deficiência de Ácido Fólico/tratamento farmacológico , Vitamina B 12/uso terapêutico , Anemia/tratamento farmacológico
2.
Med J Armed Forces India ; 79(6): 621-630, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-37981919

RESUMO

Hematopoietic cell transplantation (HCT), commonly known as Bone marrow transplantation (BMT), is a medical procedure used to treat various conditions, including blood cancers, genetic disorders, and certain autoimmune diseases. The procedure involves replacing damaged or diseased bone marrow with healthy stem cells to promote the production of new, healthy blood cells. In India, HCT has been performed for several years in specialized medical centers. India has a growing healthcare infrastructure, and many hospitals are equipped to perform these procedures. Though there are studies on HCTs done at individual transplant centers in India, a comprehensive analysis of the current landscape of HCT in the country is lacking. HCT in India has seen major advances both in the quantity and quality of HCT centers. This review article has attempted to cover the gaps of HCT in India, including its status in the Armed Forces HCT centers.

3.
Med J Armed Forces India ; 79(6): 657-664, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-37981920

RESUMO

Background: Bone Marrow Transplant (BMT) is a curative form of therapy for many hematological disorders in both the adult and pediatric patients. The availability of BMT in the AFMS at AHRR for the last 02 decades has been a game changer for the patients. Methods: We reviewed our BMT data since the inception of the program till Feb 2023. Results: Over 700 patients with more than 23 different types of hematological disorders have undergone this procedure 58%% patients underwent an Autologous BMT and 42% an allogenic BMT. Autologous BMT for Multiple Myeloma and Allogenic BMT for Aplastic Anemia and Acute Leukemias have been the most common indications. 73% patients were adults, and 27% patients were of the pediatric age group. The male: female ratio was 2:1. The spectrum of allogenic Hematopoietic Stem Cell Transplant (HSCT) has expanded from Matched Sibling Donor (MSD) transplants to Matched Unrelated Donor (MUD) Transplants and Haploidentical Donor Transplants. 93% of our Allogenic BMT patients underwent a MSD BMT, 1% MUD BMT and 06% Haploidentical BMT. Today no patient with a malignant hematological disorder requiring a BMT is denied the procedure due to the lack of an HLA donor due to the availability of haploidentical BMT. Conclusion: The evolution of a BMT program has a long learning curve and the expanded pool of eligible donors has led to a situation of "transplant for all". Haploidentical HSCT for nonmalignant hematological disorders is an unmet need. CART cell therapy and Cellular therapies need to be prioritized for future inclusion.

4.
Ann Hematol ; 101(6): 1173-1179, 2022 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-35396605

RESUMO

In developing countries, anti-D has been used in immune thrombocytopenia (ITP) as a cheaper alternative to human immunoglobulin. We aim to analyze the response and safety profile of anti-D in patients with severe ITP. A retrospective study was conducted at a tertiary care hospital in Northern India. Patients received a single intravenous infusion of 75 µg/kg anti-D. In total, 36 patients (20 females) were included in this study. The median duration from ITP diagnosis to anti-D therapy was 235 days (range 1-1613 days). Four (11.1%) patients received anti-D as an upfront treatment. The patients' platelet counts rose significantly by the end of day three and continued to be significantly high until day 30 of receiving anti-D (p ≤ 0.001). The overall response rate (ORR) by day seven was 88.89%. There was no effect of age, sex, duration of disease, prior therapy, and platelet count on the ORR. Patients were followed up for a median duration of 52 days (longest follow-up: 3080 days). Six (6/36, 16.67%) patients continued to be in remission till the last follow-up. The hemoglobin fall was statistically significant on day three and day seven (p < 0.001 and p = 0.001) and got normalized by day 30. We observed equally good ORR in mixed populations and different phases of ITP along with long-term sustained response. The study demonstrates a quick and high response rate along with good safety profile to anti-D in all forms of ITP.


Assuntos
Púrpura Trombocitopênica Idiopática , Trombocitopenia , Feminino , Humanos , Masculino , Púrpura Trombocitopênica Idiopática/diagnóstico , Estudos Retrospectivos , Imunoglobulina rho(D)/efeitos adversos , Trombocitopenia/induzido quimicamente , Resultado do Tratamento
5.
Indian J Crit Care Med ; 25(6): 668-674, 2021 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-34316147

RESUMO

BACKGROUND: High-altitude pulmonary edema (HAPE) is a common cause of hospitalization in high altitude areas with significant morbidity. The clinical presentation of HAPE can overlap with a broad spectrum of cardiopulmonary diseases. Also, it is associated with varied radiological manifestations mimicking other conditions and often leading to unnecessary and inappropriate treatment. PATIENTS AND METHODS: The primary aim of the study was to study the various radiological manifestations of HAPE through real-world chest radiographs. We present six different chest X-ray patterns of HAPE as a pictorial assay, at initial presentation, and after the resolution of symptoms with supplemental oxygen therapy and bed rest alone. RESULTS: HAPE can present as bilateral symmetrical perihilar opacities, bilateral symmetrical diffuse opacities, unilateral diffuse opacities, bilateral asymmetrical focal opacities, and even lobar consolidation with lower zone or less commonly upper zonal predilection. These presentations can mimic many common conditions like heart failure, acute respiratory distress syndrome, pulmonary embolism, aspiration pneumonitis, pneumonia, malignancy, and tuberculosis. CONCLUSION: A holistic clinical-radiological correlation coupled with analysis of the temporal course can help high-altitude physicians in differentiating true HAPE from its mimics. HOW TO CITE THIS ARTICLE: Yanamandra U, Vardhan V, Saxena P, Singh P, Gupta A, Mulajkar D, et al. Radiographical Spectrum of High-altitude Pulmonary Edema: A Pictorial Essay. Indian J Crit Care Med 2021;25(6):668-674.

6.
Proc Natl Acad Sci U S A ; 114(18): 4763-4768, 2017 05 02.
Artigo em Inglês | MEDLINE | ID: mdl-28420787

RESUMO

Venous thromboembolism (VTE), caused by altered hemostasis, remains the third most common cause of mortality among all cardiovascular conditions. In addition to established genetic and acquired risk factors, low-oxygen environments also predispose otherwise healthy individuals to VTE. Although disease etiology appears to entail perturbation of hemostasis pathways, the key molecular determinants during immediate early response remain elusive. Using an established model of venous thrombosis, we here show that systemic hypoxia accelerates thromboembolic events, functionally stimulated by the activation of nucleotide binding domain, leucine-rich-containing family, pyrin domain containing 3 (NLRP3) inflammasome complex and increased IL-1ß secretion. Interestingly, we also show that the expression of NLRP3 is mediated by hypoxia-inducible factor 1-alpha (HIF-1α) during these conditions. The pharmacological inhibition of caspase-1, in vivo knockdown of NLRP3, or HIF-1α other than IL-1ß-neutralizing antibodies attenuated inflammasome activation and curtailed thrombosis under hypoxic conditions. We extend the significance of these preclinical findings by studying modulation of this pathway in patients with altitude-induced venous thrombosis. Our results demonstrate distinctive, increased expression of NLRP3, caspase-1, and IL-1ß in individuals with clinically established venous thrombosis. We therefore propose that an early proinflammatory state in the venous milieu, orchestrated by the HIF-induced NLRP3 inflammasome complex, is a key determinant of acute thrombotic events during hypoxic conditions.


Assuntos
Hipóxia/metabolismo , Inflamassomos/metabolismo , Proteína 3 que Contém Domínio de Pirina da Família NLR/biossíntese , Trombose Venosa/metabolismo , Animais , Caspase 1/biossíntese , Modelos Animais de Doenças , Feminino , Regulação da Expressão Gênica , Humanos , Hipóxia/patologia , Subunidade alfa do Fator 1 Induzível por Hipóxia/biossíntese , Interleucina-1beta/biossíntese , Masculino , Ratos , Ratos Sprague-Dawley , Trombose Venosa/patologia
7.
Med J Armed Forces India ; 76(2): 172-179, 2020 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-32476715

RESUMO

BACKGROUND: Considering the limitations in isolating Bone Marrow Mesenchymal Stem Cells (BMSCs), alternate sources of Mesenchymal Stem Cells (MSCs) are being intensely investigated. This study evaluated dental pulp MSCs (DP-MSCs) isolated from orthodontically extracted premolar teeth from a bone tissue engineering perspective. METHODS: MSCs isolated from premolar teeth pulp were cultured and studied using BMSCs as the control. Flow cytometry analysis was performed for the positive and negative MSC markers. Multilineage differentiation focusing on bone regeneration was evaluated by specific growth induction culturing media and by alkaline phosphatase (ALP) activity. Data were compared by repeated measurement analysis of variance and Student's t-test at a p value <0.05. RESULTS: Proliferation rate, population doubling time, and colony formation of DP-MSCs were significantly higher (p < 0.001) than BMSCs. More than 85% of DP-MSCs expressed CD44, CD73, CD90, CD105, and CD166. Negative reaction was found for CD11b CD33, CD34, and CD45. Positive reaction was displayed by 7.2% of cells for early MSC marker, Stro-1. Both the cell populations differentiated into adipogenic, osteogenic, and chondrogenic lineages, with adequate ALP expression. CONCLUSION: Because DP-MSCs from orthodontic premolars hold a neural crest/ectomesenchymal ancestry, its prudent growth characteristics and multilineage differentiation open up exciting options in craniofacial tissue engineering.

8.
Br J Haematol ; 184(2): 263-268, 2019 01.
Artigo em Inglês | MEDLINE | ID: mdl-30474185

RESUMO

The pivotal role of erythropoietin (EPO) in hypoxic adaptation has led to various studies assessing the EPO and ferritin response in native highlanders from Andes and Tibet. We assessed the relationship between EPO, haemoglobin and ferritin in 335 native highlanders (172 boys and 163 girls, aged 4 to 19 years) from Leh-Ladakh, India, who had no history of travel to lowland areas. Complete blood counts, serum EPO and ferritin levels were measured. We stratified study subjects based on age, gender, pubertal status and analysed the EPO and ferritin levels between the stratified groups respectively. The mean EPO level in boys was lower than girls. The mean ferritin level in boys was significantly higher (P = 0·013) than in girls. There was no significant variation in the EPO and ferritin levels amongst the various age groups in our study. Near normal EPO levels since childhood with a negative correlation with haemoglobin is suggestive of a robust adaptive mechanism to high altitude from the early years of life. Low ferritin levels are indicative of decreased iron stores in these native highlanders.


Assuntos
Adaptação Fisiológica , Altitude , Eritropoetina/sangue , Ferritinas/sangue , Hemoglobinas/metabolismo , Adolescente , Adulto , Criança , Pré-Escolar , Estudos Transversais , Feminino , Humanos , Masculino
9.
Indian J Med Res ; 149(6): 778-782, 2019 06.
Artigo em Inglês | MEDLINE | ID: mdl-31496531

RESUMO

Background & objectives: High-altitude pulmonary oedema (HAPE) continues to challenge the healthcare providers at remote, resource-constrained settings. High-altitude terrain itself precludes convenience of resources. This study was conducted to evaluate the rise in peripheral capillary saturation of oxygen (SpO2) by the use of a partial rebreathing mask (PRM) in comparison to Hudson's mask among patients with HAPE. Methods: This was a single-centre, randomized crossover study to determine the efficiency of PRM in comparison to Hudson's mask. A total of 88 patients with HAPE referred to a secondary healthcare facility at an altitude of 11,500 feet from January to October 2013 were studied. A crossover after adequate wash-out on both modalities was conducted for first two days of hospital admission. All patients with HAPE were managed with bed rest and stand-alone oxygen supplementation with no adjuvant pharmacotherapy. Results: The mean SpO2on ambient air on arrival was 66.92±10.8 per cent for all patients with HAPE. Higher SpO2values were achieved with PRM in comparison to Hudson's mask on day one (86.08±5.15 vs. 77.23±9.09%) and day two (89.94±2.96 vs. 83.39±5.93%). The difference was more pronounced on day one as compared to day two. Interpretation & conclusions: Mean SpO2values were found to be significantly higher among HAPE patients using PRM compared to those on Hudson's mask. Further studies to understand the translation of this incremental response in SpO2to clinical benefits (recovery times, mortality rates and hospital stay) need to be undertaken.


Assuntos
Doença da Altitude/terapia , Hipertensão Pulmonar/terapia , Oxigênio/administração & dosagem , Respiração , Altitude , Doença da Altitude/fisiopatologia , Estudos Cross-Over , Humanos , Hipertensão Pulmonar/fisiopatologia , Oxigênio/metabolismo
10.
Med J Armed Forces India ; 75(1): 31-40, 2019 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-30705476

RESUMO

BACKGROUND: The World Health Organization (WHO) in 2013 has revised its guidelines on antiretroviral therapy (ART) treatment for human immunodeficiency virus (HIV)-positive adults and further updated it in 2016. Based on the WHO recommendations, in May 2017, National AIDS Control Organisation, India recommended initiation of ART treatment for all people living with HIV, regardless of CD4 count, clinical stage, age, or population. This systematic review aims to assess the clinical effectiveness and cost implication of the new guidelines for India. METHODS: A systematic and comprehensive literature search on PubMed, OvidSP, Cochrane Library, and Google Scholar was carried out. Studies reporting either acquired immunodeficiency syndrome (AIDS) or mortality or both as outcome variables were selected. A meta-analysis of the available studies was carried out. The risk ratio was calculated to assess the reduction in AIDS or mortality or both. Cost-effectiveness analysis using health technology principles evaluating the lives saved in terms of incremental cost-effectiveness ratio and cost per quality-adjusted life years gained was carried out. RESULTS: Nine eligible studies were included for the meta-analysis. For India, the pooled relative risk of AIDS or mortality or both being 0.84 (95% confidence interval [CI], 0.76-0.92) and 0.78 (95% CI, 0.68-0.89) for ART initiation at CD4 count of ≤350 vs CD4 count of ≤500 and at CD4 count of ≤500 vs CD4 count > 500 cells/mm3, respectively. The incremental cost for per additional life saved is US$ 2592 and US$ 2357 for ART initiation at ≤500 and > 500 CD4 count, respectively. CONCLUSION: The adoption of the new WHO guidelines is beneficial with substantial reduction in AIDS or mortality or both. This study suggests that adopting new WHO guidelines is cost-effective for India.

11.
J Pediatr Hematol Oncol ; 40(6): 433-437, 2018 08.
Artigo em Inglês | MEDLINE | ID: mdl-29697577

RESUMO

Posterior reversible encephalopathy syndrome (PRES) has diverse etiologies and is closely linked to hematopoietic stem cell transplant (HSCT). Headache and seizures are the most common clinical presentations. Although near total recovery is seen in the majority of patients with appropriate management, the implications of its occurrence in the setting of an HSCT is much more than the residual neurological deficits. Graft rejection and occurrence of graft versus host disease has been reported. We analyzed retrospectively our data of 35 pediatric HSCT recipients over the last 2 years at our center. In total, 17% (n=6) patients developed PRES. Headache and seizures were the most common clinical presentations. All patients were on calcineurin inhibitors at the onset of symptoms. The median time after HSCT to the onset of PRES was 21 days. In total, 34% (n=2) patients developed residual neurological deficit. One patient died of acute graft versus host disease at a later date, and 50% (n=3) patients had graft rejection and return to transfusion dependence. The implications of PRES on HSCT outcomes are grave, and better immunosuppression transition protocols need to be developed.


Assuntos
Inibidores de Calcineurina/administração & dosagem , Rejeição de Enxerto/tratamento farmacológico , Doença Enxerto-Hospedeiro/tratamento farmacológico , Transplante de Células-Tronco Hematopoéticas , Síndrome da Leucoencefalopatia Posterior/tratamento farmacológico , Criança , Feminino , Rejeição de Enxerto/etiologia , Rejeição de Enxerto/mortalidade , Doença Enxerto-Hospedeiro/etiologia , Doença Enxerto-Hospedeiro/mortalidade , Humanos , Masculino , Síndrome da Leucoencefalopatia Posterior/etiologia , Síndrome da Leucoencefalopatia Posterior/mortalidade , Estudos Retrospectivos
12.
Med J Armed Forces India ; 74(4): 365-370, 2018 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-30449923

RESUMO

BACKGROUND: Megaloblastic Anemia (MA) is a relatively common disease, yet the data on prevalence of MA remains scarce. This study was conducted to study the prevalence and clinico-hematological profile of MA. METHODS: This was a cross-sectional study done on 1150 adult anemic patients. All patients diagnosed to have MA were studied for clinico-hematological and etiological profile. Nerve conduction studies (NCS) were done in all. RESULTS: MA was present in 3.6% cases of anemia. Severe anemia was seen in 9.7% of anemic patients and 75% of MA cases (p < 0.05). Forty five percent of MA patients presented with pancytopenia. Vitamin B12 and folic acid deficiency were documented in 40% and 25% cases respectively while combined deficiency was noted in 35% of all MA cases. There was no co-relation between severity of anemia and deficiency of either of the vitamins (Fischer exact test: 0.530). Among MA patients, 35% were vegetarians while 65% consumed mixed diet. There was no association between vegetarian diet and Vit B12 deficiency (p = 0.3137). An additional etiology was more commonly found in patients on mixed diet [92%; 24/26] as compared to those on vegetarian diet [50%; 7/14] (p = 0.04). NCS was abnormal in 14 patients (35%). Overt clinical neuropathy was present in 12 cases of MA, while subclinical neuropathy was seen in 2 cases. CONCLUSION: MA is one of common causes of pancytopenia and severe anemia. Diet plays an important role in causation of MA in vegetarians. An alternative etiology is however, more likely to be found in patients on mixed diet. While overt neurological abnormalities are common in MA, subclinical neuropathy is uncommon.

13.
Indian J Crit Care Med ; 22(3): 150-153, 2018 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-29657371

RESUMO

CONTEXT: Optic nerve sheath diameter (ONSD) has long been accepted as a reliable proxy of intracranial pressure especially in critical care and bedside settings. The present consensus is to measure ONSD in both eyes and take average value, which is cumbersome and a potential cause of discomfort to the patient. AIM: We aim to compare the values of ONSD of the right and left eye in a random sample as measured by bedside ocular ultrasonography (USG) in Indian adults. SETTINGS AND DESIGN: This was a prospective study conducted from September 2012 to March 2013 in the Department of Internal Medicine of a tertiary care hospital situated at moderate high altitude (11,500 ft) in India. MATERIALS AND METHODS: Patients admitted with high altitude pulmonary edema (HAPE) were recruited by convenience sampling. The ONSD of both eyes were measured 3 mm behind the globe using a 7.5 MHz linear probe on the closed eyelids of supine subjects. STATISTICAL ANALYSIS: Analysis was done using SPSS 17.0. RESULTS: A total of 47 patients of HAPE were recruited to the study with daily ONSD recording of both eyes during the admission period. The mean ONSD of the left eye was 4.60 (standard deviation [SD] = 0.71) whereas the mean ONSD of right eye 4.59 (SD = 0.72). The ONSD of the right eye and left eye was strongly correlated (correlation coefficient = 0.98 with P < 0.0001). The mean difference in the ONSD of both eyes (right-left) was -0.0044 (SD = 0.11) which was not statistically significant (P = 0.533). CONCLUSION: Our results suggest that the difference in ONSD of both eyes is not statistically significant in disease or health. This study also suggests that the ONSD of either eye can be predicted by the other eye recordings. Based on these findings, it can be suggested that during ocular USG for routine bedside/research purposes it is sufficient to measure ONSD of any of the one eye to save time and avoid discomfort to the patient.

14.
Indian J Med Res ; 145(6): 824-832, 2017 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-29067985

RESUMO

BACKGROUND & OBJECTIVES: Hospital-acquired infections (HAIs) are a major challenge to patient safety and have serious public health implications by changing the quality of life of patients and sometimes causing disability or even death. The true burden of HAI remains unknown, particularly in developing countries. The objective of this study was to estimate point prevalence of HAI and study the associated risk factors in a tertiary care hospital in Pune, India. METHODS: A series of four cross-sectional point prevalence surveys were carried out between March and August 2014. Data of each patient admitted were collected using a structured data entry form. Centers for Disease Control and Prevention guidelines were used to identify and diagnose patients with HAI. RESULTS: Overall prevalence of HAI was 3.76 per cent. Surgical Intensive Care Unit (ICU) (25%), medical ICU (20%), burns ward (20%) and paediatric ward (12.17%) were identified to have significant association with HAI. Prolonged hospital stay [odds ratio (OR=2.81), mechanical ventilation (OR=18.57), use of urinary catheter (OR=7.89) and exposure to central air-conditioning (OR=8.59) had higher odds of acquiring HAI (P<0.05). INTERPRETATION & CONCLUSIONS: HAI prevalence showed a progressive reduction over successive rounds of survey. Conscious effort needs to be taken by all concerned to reduce the duration of hospital stay. Use of medical devices should be minimized and used judiciously. Healthcare infection control should be a priority of every healthcare provider. Such surveys should be done in different healthcare settings to plan a response to reducing HAI.


Assuntos
Infecção Hospitalar/epidemiologia , Infecções Respiratórias/epidemiologia , Centros de Atenção Terciária , Adulto , Infecção Hospitalar/fisiopatologia , Países em Desenvolvimento , Feminino , Humanos , Índia/epidemiologia , Controle de Infecções , Unidades de Terapia Intensiva , Masculino , Pessoa de Meia-Idade , Qualidade de Vida , Infecções Respiratórias/fisiopatologia , Fatores de Risco
15.
Med J Armed Forces India ; 73(4): 388-393, 2017 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-29386716

RESUMO

Management of victim of radiation injury poses a wide spectrum of challenges to the health care provider starting with the evaluation of the damage, the kind of hospitalization and treatment and the regular monitoring of the patient. Undesirable clinical outcomes are probable if prodromal stage evolves rapidly and is severe. Critical systems like neurovascular, gastrointestinal, haematopoietic and cutaneous are afflicted in Acute Radiation Syndrome. Three main elements which are essential for assessment of prognosis and selection of treatment are vomiting onset time, kinetics of depletion of lymphocyte, and chromosome abnormalities. Larger incidents warrant, a well-structured national response system. Health care institutions must develop protocols to respond to radiation exposure related emergencies in tandem with the local response teams. Multidisciplinary approach between clinical specialists, nursing staff and psychological experts is of critical significance. External decontamination, estimation of dose and fluid and electrolyte replacements form part of support therapy. Reverse isolation, antacids, H2 blockers, use of reverse barrier nursing and prophylactic antimicrobials are part of the treatment plan. Patients with severe bone marrow damage will require blood products support. Increased recovery of neutrophils in radiationaccident victims is the rationale for the use of Colony Stimulating Factors. New directions are under evaluation which includes novel cytokine therapies like interleukin-7, keratinocyte growth factor, and thrombopoietin or its analogues. The final decision regarding allogenic haematopoietic stem cell transplant should be considered after considering the irradiation source, particularity of the situations or circumstances, associated injuries and disease.

16.
Med J Armed Forces India ; 73(4): 363-369, 2017 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-29386711

RESUMO

BACKGROUND: Chronic intermittent hypoxia is known to induce systemic arterial hypertension whereas chronic hypoxia causes pulmonary arterial hypertension. High altitude (HA) induced systemic hypertension (HASH) in previously normotensive lowlanders following acclimatisation and prolonged stay at moderate HA is a commonly encountered medical problem. HASH has been attributed to increased sympathetic discharge. Endothelial dysfunction (ED) is implicated in hypertension in the plains hence this study was conducted in HA. This is relevant especially because of the established role of ED in the aetiopathogenesis of HA illnesses. Since hypoxia may induce ED, we aimed at studying the association of endothelial dysfunction with HASH in temporary residents at HA. METHODS: In this case-control single-centre study, we evaluated ED, by measuring endothelial molecular markers, soluble intercellular adhesion molecule-1 (sICAM-1), vascular cell adhesion molecule-1 (VCAM-1), vascular endothelial growth factor (VEGF) and endothelial selectin (E-Selectin) in 24 cases with HASH and 25 age, sex matched normotensive controls at moderate high altitude (11,500 ft). RESULTS: The levels of sICAM-1 (patients: 214.3 ± 34.2 µg/L, controls: 196.2 ± 28.5 µg/L; p = 0.049) and VCAM-1 (patients 766.1 ± 123.4 ng/mL, controls: 668.6 + 117.6 ng/mL; p = 0.007) were statistically higher in the patient group. However, VEGF and E-Selectin were not significantly different between the groups. sICAM-1 significantly correlated with levels of systolic and diastolic blood pressure (r = 0.401, p = 0.003 and 0.486, p = 0.000) respectively. CONCLUSION: HASH is associated with endothelial dysfunction in form of raised levels of sICAM-1 and VCAM-1.

17.
Blood ; 123(8): 1250-60, 2014 Feb 20.
Artigo em Inglês | MEDLINE | ID: mdl-24297866

RESUMO

Oxygen-compromised environments, such as high altitude, air travel, and sports, and pathological conditions, such as solid tumors, have been suggested to be prothrombotic. Despite the indispensable role of platelets in thrombus formation, the studies linking hypoxia, platelet reactivity, and thrombus formation are limited. In the present study, platelet proteome/reactivity was analyzed to elucidate the acute hypoxia-induced prothrombotic phenotype. Rats exposed to acute simulated hypoxia (282 torr/8% oxygen) demonstrated a decreased bleeding propensity and increased platelet reactivity. Proteomic analysis of hypoxic platelets revealed 27 differentially expressed proteins, including those involved in coagulation. Among these proteins, calpain small subunit 1, a 28-kDa regulatory component for calpain function, was significantly upregulated under hypoxic conditions. Moreover, intraplatelet Ca(2+) level and platelet calpain activity were also found to be in accordance with calpain small subunit 1 expression. The inhibition of calpain activity demonstrated reversal of hypoxia-induced platelet hyperreactivity. The prothrombotic role for calpain was further confirmed by an in vivo model of hypoxia-induced thrombosis. Interestingly, patients who developed thrombosis while at extreme altitude had elevated plasma calpain activities and increased soluble P-selectin level. In summary, this study suggests that augmented calpain activity is associated with increased incidence of thrombosis under hypoxic environments.


Assuntos
Plaquetas/metabolismo , Calpaína/metabolismo , Hipóxia/metabolismo , Trombose/metabolismo , Adulto , Doença da Altitude/metabolismo , Animais , Calpaína/genética , Modelos Animais de Doenças , Ativação Enzimática/fisiologia , Humanos , Masculino , Ativação Plaquetária/fisiologia , Proteoma/metabolismo , Ratos , Ratos Sprague-Dawley , Trombofilia/metabolismo
18.
Indian J Med Res ; 142(2): 165-74, 2015 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-26354213

RESUMO

BACKGROUND & OBJECTIVES: Acute myocardial infarction (AMI) is characterized by irreparable and irreversible loss of cardiac myocytes. Despite major advances in the management of AMI, a large number of patients are left with reduced left ventricular ejection fraction (LVEF), which is a major determinant of short and long term morbidity and mortality. A review of 33 randomized control trials has shown varying improvement in left ventricular (LV) function in patients receiving stem cells compared to standard medical therapy. Most trials had small sample size and were underpowered. This phase III prospective, open labelled, randomized multicenteric trial was undertaken to evaluate the efficacy in improving the LVEF over a period of six months, after injecting a predefined dose of 5-10 × 10 [8] autologous mononuclear cells (MNC) by intra-coronary route, in patients, one to three weeks post ST elevation AMI, in addition to the standard medical therapy. METHODS: In this phase III prospective, multicentric trial 250 patients with AMI were included and randomized into stem cell therapy (SCT) and non SCT groups. All patients were followed up for six months. Patients with AMI having left ventricular ejection fraction (LVEF) of 20-50 per cent were included and were randomized to receive intracoronary stem cell infusion after successfully completing percutaneous coronary intervention (PCI). RESULTS: On intention-to-treat analysis the infusion of MNCs had no positive impact on LVEF improvement of ≥ 5 per cent. The improvement in LVEF after six months was 5.17 ± 8.90 per cent in non SCT group and 4.82 ± 10.32 per cent in SCT group. The adverse effects were comparable in both the groups. On post hoc analysis it was noted that the cell dose had a positive impact when infused in the dose of ≥ 5 X 10 [8] (n=71). This benefit was noted upto three weeks post AMI. There were 38 trial deviates in the SCT group which was a limitation of the study. INTERPRETATION & CONCLUSIONS: Infusion of stem cells was found to have no benefit in ST elevation AMI. However, the procedure was safe. A possible benefit was seen when the predefined cell dose was administered which was noted upto three weeks post AMI, but this was not significant and needs confirmation by larger trials.


Assuntos
Infarto do Miocárdio/terapia , Transplante de Células-Tronco , Células-Tronco/citologia , Disfunção Ventricular Esquerda/terapia , Idoso , Medula Óssea , Ecocardiografia , Feminino , Humanos , Índia , Masculino , Pessoa de Meia-Idade , Infarto do Miocárdio/patologia , Resultado do Tratamento , Disfunção Ventricular Esquerda/patologia
19.
Natl Med J India ; 28(4): 172-5, 2015.
Artigo em Inglês | MEDLINE | ID: mdl-27132723

RESUMO

BACKGROUND: The incidence of juvenile delinquency has increased in the past decade in India and juvenile crimes are increasingly being reported. This has been attributed to many biopsychosocial factors. It is essential to understand these issues in the context of India to determine the response of acts of children in conflict with the law. We aimed to assess the sociodemographic characteristics and the aggression quotient of children in conflict with the law (juvenile delinquents) in observation homes across India and compare them with those who were not. METHODS: We did a case-control study in five juvenile homes in the cities of Hyderabad, Lucknow and Pune. Ninety inmates (74 boys, 16 girls) were included in the study. Sociodemographic characteristics and aggression quotient of children in conflict with the law were evaluated using two separate questionnaires, i.e. a sociodemographic questionnaire and the modified Buss and Perry aggression questionnaire. These were compared with a control group of similar age, sex and income status. RESULTS: All the children in conflict with the law surveyed belonged to the lower socioeconomic strata, had a significantly higher chance (p<0.05) of coming from broken homes, have addictions, jailed family members and suffered physical and sexual abuse than controls. They also scored higher on all domains of the aggression questionnaire than controls. CONCLUSION: A collection of sociodemographic attributes such as broken homes, addictions and abuse seem to have an important association with juvenile delinquency. Children in conflict with the law are also more likely to be associated with a higher aggression quotient as compared to children who were not.


Assuntos
Agressão , Maus-Tratos Infantis/psicologia , Conflito Familiar/psicologia , Delinquência Juvenil , Transtornos Relacionados ao Uso de Substâncias/psicologia , Adolescente , Estudos de Casos e Controles , Criança , Defesa da Criança e do Adolescente , Demografia , Feminino , Humanos , Índia/epidemiologia , Delinquência Juvenil/legislação & jurisprudência , Delinquência Juvenil/prevenção & controle , Delinquência Juvenil/psicologia , Delinquência Juvenil/estatística & dados numéricos , Masculino , Fatores de Risco , Controle Social Formal/métodos , Fatores Socioeconômicos , Inquéritos e Questionários
20.
Med J Armed Forces India ; 71(1): 33-7, 2015 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-25609861

RESUMO

BACKGROUND: Between 09 Jan 2011 to 25 Mar 2011 an outbreak of respiratory illness was reported from a Military Training institution. 52 cases of respiratory tract infection were admitted from this institution. All the cases were trainees between 18 and 21 years of age. Aggressive control measures were instituted along with the investigation of the outbreak to determine the nature of the disease and the causative organism. METHODS: The investigation of the outbreak was initiated on 08 Mar 2011 when a sudden rise in number of hospital admissions due to respiratory illness was noticed. Epidemiological information was collected from the cases. Routine blood investigations, sputum examination and chest radiograph of suspected cases were done. RESULTS: Total of 52 cases of respiratory illness were reported during the period of outbreak giving an attack rate of 25.8 per 1000. Out of these 52 cases 23 (44.2%) were radiologically confirmed. Streptococcus pneumoniae was grown in 8 (25.85) out of 31 sputum samples. The outbreak was controlled by administration of 'supervised mass chemoprophylaxis' of all susceptible individuals in the institution with Tablet Azithromycin orally. Last suspected case was admitted to the military hospital on 25 Mar 2011. CONCLUSION: The study highlights the importance of Streptococcus pneumoniae as a causative organism for outbreaks of community acquired pneumonia (CAP) in large residential training institutions and reiterates the need for formulating a policy for continuous surveillance. It also highlights the importance of the novel method of using chemoprophylaxis for control of an ongoing outbreak of CAP.

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