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1.
J Clin Nurs ; 33(1): 115-125, 2024 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-36802108

RESUMO

OBJECTIVES: To determine post-COVID syndromes in the Indian population, correlating a wide spectrum of post-COVID manifestations with acute disease severity and associated risk factors. BACKGROUND: Post-COVID Syndrome (PCS) is defined as signs and symptoms that develop during or after acute COVID-19 infection. DESIGN OF STUDY: This is a prospective observational cohort with repetitive measurements. METHODS: The study followed RT-PCR confirmed COVID-19-positive survivors discharged from HAHC Hospital, New Delhi, for a period of 12 weeks. The patients were interviewed over the phone at 4 weeks and 12 weeks from the onset of symptoms for evaluation of clinical symptoms and health-related quality of life parameters. RESULTS: A total of 200 patients completed the study. At the baseline, 50% of the patients were categorised as severe based on their acute infection assessment. At 12 weeks after symptom onset, fatigue (23.5%), hair loss (12.5%) and dyspnea (9%) were the main persistent symptoms. The incidence of hair loss (12.5%), memory loss (4.5%) and brain fog (5%) were found to be increased as compared to the acute infection period. Severity of the acute COVID infection behaved as an independent predictor for the development of PCS, with high odds of experiencing persistent cough (OR = 13.1), memory loss (OR = 5.2) and fatigue (OR = 3.3). Further, 30% of subjects in the severe group experienced statistically significant fatigue at 12 weeks (p < .05). CONCLUSION: From the results of our study, it can be concluded that there is a huge disease burden of post-COVID Syndrome (PCS). The PCS comprised multisystem symptoms ranging from serious complaints of dyspnea, memory loss and brain fog to non-serious complaints of fatigue and hair loss. Severity of the acute COVID infection behaved as an independent predictor for the development of PCS. Our findings strongly recommend vaccination against COVID-19, for protection from disease severity as well as prevention of PCS. RELEVANCE TO CLINICAL PRACTICE: The findings of our study support the multidisciplinary approach required for the management of PCS with a team comprising of physicians, nurses, physiotherapists and psychiatrists working in close coordination for the rehabilitation of these patients. As nurses are considered the most trusted professionals in the community and the class of health workers associated with rehabilitation, focus should be given to educating them on PCS, which would prove to be an important strategy for efficient monitoring and long-term management of COVID-19 survivors.


Assuntos
COVID-19 , Humanos , COVID-19/epidemiologia , Qualidade de Vida , Centros de Atenção Terciária , Alopecia , Dispneia , Fadiga/epidemiologia , Fadiga Mental , Transtornos da Memória
2.
Lung ; 201(6): 581-590, 2023 12.
Artigo em Inglês | MEDLINE | ID: mdl-37917190

RESUMO

INTRODUCTION: Survival following lung transplant is low. With limited donor lung availability, predicting post-transplant survival is key. We investigated the predictive value of pre-transplant CT biomarkers on survival. METHODS: In this single-center retrospective cohort study of adults in a diverse, underserved, urban lung transplant program (11/8/2017-5/20/2022), chest CTs were analyzed using TeraRecon to assess musculature, fat, and bone. Erector spinae and pectoralis muscle area and attenuation were analyzed. Sarcopenia thresholds were 34.3 (women) and 38.5 (men) Hounsfield Units (HU). Visceral and subcutaneous fat area and HU, and vertebral body HU were measured. Demographics and pre-transplant metrics were recorded. Survival analyses included Kaplan-Meier and Cox proportional hazard. RESULTS: The study cohort comprised 131 patients, 50 women, mean age 60.82 (SD 10.15) years, and mean follow-up 1.78 (SD 1.23) years. Twenty-nine percent were White. Mortality was 32.1%. Kaplan-Meier curves did not follow the proportional hazard assumption for sex, so analysis was stratified. Pre-transplant EMR metrics did not predict survival. Women without sarcopenia at erector spinae or pectoralis had 100% survival (p = 0.007). Sarcopenia did not predict survival in men and muscle area did not predict survival in either sex. Men with higher visceral fat area and HU had decreased survival (p = 0.02). Higher vertebral body density predicted improved survival in men (p = 0.026) and women (p = 0.045). CONCLUSION: Pre-transplantation CT biomarkers had predictive value in lung transplant survival and varied by sex. The absence of sarcopenia in women, lower visceral fat attenuation and area in men, and higher vertebral body density in both sexes predicted survival in our diverse, urban population.


Assuntos
Transplante de Pulmão , Sarcopenia , Masculino , Adulto , Humanos , Feminino , Pessoa de Meia-Idade , Sarcopenia/diagnóstico por imagem , Estudos Retrospectivos , População Urbana , Biomarcadores , Transplante de Pulmão/efeitos adversos , Tomografia Computadorizada por Raios X
3.
J Comput Assist Tomogr ; 46(6): 888-893, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-36399535

RESUMO

OBJECTIVE: This study investigated the use of routine contrast-enhanced chest computed tomography (CT) to diagnose unsuspected pulmonary embolism (PE). METHODS: All adult routine contrast-enhanced chest CTs performed at Montefiore in 2018 were included. Pulmonary artery enhancement was measured by placing regions of interest in the pulmonary vasculature. Adequate enhancement was defined as 200 Hounsfield units (HU) or greater. Presence or absence of PE was noted. Descriptive statistics and logistic regression analysis were performed. RESULTS: A total of 3164 CTs were evaluated (55.8% women; mean age, 63.2 years). Main pulmonary enhancement was highly correlated with peripheral enhancement. Of all cases, 28.7% (907 of 3164) reached the 200 HU threshold. Greater enhancement was associated with female sex, older age, outpatients, and contrast amount administered. Pulmonary embolism-positive cases comprised 1.8% (58 of 3164) of total cases. Furthermore, 39.7% (23 of 58) of PE-positive cases reached the 200 HU threshold. CONCLUSIONS: Over one quarter of routine contrast-enhanced chest CT scans met the 200 HU threshold indicative of adequate pulmonary artery enhancement, including nearly half of the 2% of examinations positive for PE.


Assuntos
Embolia Pulmonar , Humanos , Adulto , Feminino , Pessoa de Meia-Idade , Masculino , Embolia Pulmonar/diagnóstico por imagem , Tomografia Computadorizada por Raios X/métodos , Tórax , Artéria Pulmonar/diagnóstico por imagem , Pulmão
4.
Microbiol Immunol ; 65(8): 290-301, 2021 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-33347650

RESUMO

Chikungunya virus (CHIKV), an arthropod-borne Alphavirus is responsible for chikungunya disease. Arthralgia and arthritis are the major symptom. Some patients recover early while others for a very long time. This study provides, epidemiology and molecular characterization of three whole-genome sequences of CHIKV and assessed phylogenetic analysis, physiological properties, antigenicity, and B-cell epitope prediction by in silico. We report the clinical epidemiology of 325 suspected patients. Of these, 118 (36.30%) were confirmed CHIKV positive by either PCR or ELISA. Clinical analysis showed joint pain, joint swelling and headache were frequent and significant features. Phylogenie analysis showed the currently circulating strain is in close clustring to Africa, Uganda, and Singapore CHIKV strains. Molecular characterization by WGS was done. Thirty eight amino acid changes in the nonstructural proteins were found with respect to the S27 (ECSA) strain. Of these five located in nsP2. Similarly, 34 amino acid changes in structural proteins were observed. The major change was notice; in E3 protein hydropathicity -0.281 to -0.362, in E2 isoelectric point (pI) 8.24 to 8.37, instability index 66.08 to 71.062, aliphatic index varied from 74.69 to 68.59 and E3 75.79 to 70.05. In nsP1 protein pI varies from 6.62 to 8.04, while no other change was observed in structural and nonstructural protein. The linear B-cell epitopes, position, and number varied with the mutation. The molecular characterizations of WGS demonstrate the observation of protein, antigenicity with respect to the mutation.


Assuntos
Febre de Chikungunya , Vírus Chikungunya , Febre de Chikungunya/epidemiologia , Vírus Chikungunya/genética , Epitopos de Linfócito B , Humanos , Índia/epidemiologia , Mutação , Filogenia
5.
Skeletal Radiol ; 50(5): 927-936, 2021 May.
Artigo em Inglês | MEDLINE | ID: mdl-33026478

RESUMO

INTRODUCTION: Clinically measured Quadriceps angle (Q-angle) has low reliability. Measurement of angle between femoral shaft and patellar tendon (FSPT angle) on routine knee MRI was described in this study to represent the lateral vector forces of quadriceps mechanism. The cross-sectional study was designed to compare this angle between subjects with objective patellofemoral instability (PFI) versus those without PFI, to assess its reliability, and to assess its validity in terms of its ability to differentiate between PFI and non-PFI subjects using the "Receiver Operating Characteristic" (ROC) curve. MATERIALS AND METHODS: MRI scans of 20 subjects with PFI and 20 without PFI were obtained. FSPT angle was measured in each MRI by three different raters. In addition, the clinical Q-angle was also measured in the control group. RESULTS: The FSPT angle was significantly higher in PFI group as compared with the non-PFI group (p < 0.001). It had substantial inter-rater reliability of 0.82 (95% CI = 0.67-0.92) in the non-PFI group and 0.89 (95% CI = 0.78-0.95) in the PFI group. Test-retest reliability was more than 0.90. The AUC for the ROC curve was 0.86 (95% CI = 0.74-0.97). The clinical Q-angle measured in non-PFI subjects had inter-rater reliability of only 0.48 (95% CI = 0.21-0.72), and showed a fair correlation of 0.58 with the MRI angle. CONCLUSION: Measurement of FSPT angle was described on MRI with substantial intra-rater and inter-rater reliability. The angle was significantly higher in PFI versus non-PFI subjects and also showed a good ability to differentiate between these two groups in the ROC curve.


Assuntos
Ligamento Patelar , Articulação Patelofemoral , Estudos Transversais , Humanos , Imageamento por Ressonância Magnética , Ligamento Patelar/diagnóstico por imagem , Articulação Patelofemoral/diagnóstico por imagem , Reprodutibilidade dos Testes
6.
Phytother Res ; 34(7): 1609-1618, 2020 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-32026537

RESUMO

Diabetes mellitus is associated with increased levels of inflammation and oxidative stress in patients. The aim of the present study was to test the hypothesis that aqueous extract of Cichorium intybus seeds (AECIS) would have add-on beneficial effect in type 2 diabetes mellitus (T2DM). In this double-blind randomized clinical study, 150 subjects were enrolled to assess the add-on efficacy and safety of AECIS in T2DM patients. The subjects were randomized (1:1) to the AECIS (n = 51) and placebo (n = 49) groups. The subjects in both groups continued to take prescribed doses of metformin. The standardization of AECIS was carried out by liquid chromatography-mass spectrometry and phytochemical analysis. The mean hemoglobin A1c (HbA1c) level in the AECIS and placebo groups at baseline was 8.6% and 8.5%, respectively. Mean values of HbA1c at the end of 12 weeks of intervention were 7.42% in the AECIS group (a reduction of 1.18% from baseline) and 8.4% in the placebo group (mean reduction of 0.1% from baseline). Besides, significant reduction in inflammation, oxidative stress, and hypertriglyceridemia was seen in the AECIS group (p < .05). The study shows for the first time that AECIS supplementation ameliorates the disease progression and it is beneficial as a potential adjunct dietary supplement for the management of T2DM.


Assuntos
Cichorium intybus/química , Diabetes Mellitus Tipo 2/tratamento farmacológico , Hiperlipidemias/tratamento farmacológico , Inflamação/tratamento farmacológico , Estresse Oxidativo/efeitos dos fármacos , Sementes/química , Método Duplo-Cego , Feminino , Humanos , Masculino , Pessoa de Meia-Idade
7.
Eur Radiol ; 29(1): 241-250, 2019 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-29948081

RESUMO

PURPOSE: To examine the association between myocardial fat, a poorly understood finding frequently observed on non-contrast CT, and all-cause mortality in patients with and without a history of prior MI. MATERIALS AND METHODS: A retrospective cohort from a diverse urban academic center was derived from chronic myocardial infarction (MI) patients (n = 265) and three age-matched patients without MI (n = 690) who underwent non-contrast chest CT between 1 January 2005-31 December 2008. CT images were reviewed for left and right ventricular fat. Electronic records identified clinical variables. Kaplan-Meier and Cox proportional hazard analyses assessed the association between myocardial fat and all-cause mortality. The net reclassification improvement assessed the utility of adding myocardial fat to traditional risk prediction models. RESULTS: Mortality was 40.1% for the no MI and 71.7% for the MI groups (median follow-up, 6.8 years; mean age, 73.7 ± 10.6 years). In the no MI group, 25.7% had LV and 49.9% RV fat. In the MI group, 32.8% had LV and 42.3% RV fat. LV and RV fat was highly associated (OR 5.3, p < 0.001). Ventricular fat was not associated with cardiovascular risk factors. Myocardial fat was associated with a reduction in the adjusted hazard of death for both the no MI (25%, p = 0.04) and the MI group (31%, p = 0.018). Myocardial fat resulted in the correct reclassification of 22% for the no MI group versus the Charlson score or calcium score (p = 0.004) and 47% for the MI group versus the Charlson score (p = 0.0006). CONCLUSIONS: Patients with myocardial fat have better survival, regardless of MI status, suggesting that myocardial fat is a beneficial biomarker and may improve risk stratification. KEY POINTS: • Myocardial fat is commonly found on chest CT, yet is poorly understood • Myocardial fat is associated with better survival in patients with and without prior MI and is not associated with traditional cardiovascular risk factors • This finding may provide clinically meaningful prognostic value in the risk stratification of patients.


Assuntos
Tecido Adiposo/diagnóstico por imagem , Ventrículos do Coração/diagnóstico por imagem , Infarto do Miocárdio/diagnóstico por imagem , Idoso , Idoso de 80 Anos ou mais , Biomarcadores/análise , Estudos de Coortes , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Infarto do Miocárdio/mortalidade , Prognóstico , Modelos de Riscos Proporcionais , Estudos Retrospectivos , Medição de Risco/métodos , Fatores de Risco , Tomografia Computadorizada por Raios X/métodos , Estados Unidos/epidemiologia
8.
Knee Surg Sports Traumatol Arthrosc ; 27(1): 153-165, 2019 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-30019073

RESUMO

PURPOSE: There is a theoretical risk of injury to neurovascular structures during inside-out meniscal repair without a safety incision, although there are limited studies assessing this risk. This simulation study on archival MRI films was performed to assess the risk for the popliteal neurovascular bundle and the peroneal nerve during passage of needles for inside-out meniscus repair without a "safety incision", thereby defining a "safe zone" of the menisci that can be safely repaired using this technique. METHODS: Archival MRI scans (n = 50) were retrieved and axial sections through the menisci were used for simulation. The needle passage was simulated for different points on the posterior horn and body of lateral and medial menisci at "half-hour" intervals using clock method (15° intervals) with three different portals and two different needle cannulas, resulting in six different scenarios of needle passage for each point on the meniscus. The distance of the needle in each scenario was measured from popliteal vessels (n = 50) and peroneal nerve (n = 10). The value "mean-3SD" was calculated for positive means and "Mean + 3SD" was calculated if the mean was negative. An additional 2 mm was defined as "safe distance". Thus, simulation models in which the mean - 3SD was less than 2 mm (or mean + 3SD was greater than - 2 mm for negative means) were labelled as "unsafe". RESULTS: Needle passage through medial meniscus at and medial to 1 o'clock position for a right knee (or 11 o'clock position for a left knee) was safe, irrespective of the portal and needle type. For the lateral meniscus, only the equatorial region was found to be safe with this method. CONCLUSIONS: The popliteal neurovascular bundle is safe during the inside-out medial meniscal repair without a safety incision. For the terminal-most part of the posterior horn, the AM portal and the straight cannula should be avoided. However, this method without safety incision cannot be recommended for lateral meniscus because of the risk to the popliteal vessels and the peroneal nerve. Instead, the inside-out method with a safety incision, or an all-inside method should be used for lateral meniscus. LEVEL OF EVIDENCE: III.


Assuntos
Artroscopia/métodos , Complicações Intraoperatórias/prevenção & controle , Traumatismos dos Nervos Periféricos/prevenção & controle , Lesões do Menisco Tibial/cirurgia , Lesões do Sistema Vascular/prevenção & controle , Adolescente , Adulto , Artroscopia/efeitos adversos , Simulação por Computador , Humanos , Complicações Intraoperatórias/etiologia , Imageamento por Ressonância Magnética , Pessoa de Meia-Idade , Modelos Anatômicos , Segurança do Paciente , Traumatismos dos Nervos Periféricos/etiologia , Nervo Fibular/lesões , Artéria Poplítea/lesões , Veia Poplítea/lesões , Adulto Jovem
9.
Arch Orthop Trauma Surg ; 136(11): 1555-1561, 2016 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-27438377

RESUMO

PURPOSE: Anatomically, posterior cruciate ligament (PCL) consists of two bundles, i.e. anterolateral (AL) and posteromedial (PM) bundle. Single-bundle PCL (SBPCL) reconstruction remains most popular method of reconstruction, though double-bundle PCL (DBPCL) reconstruction is more anatomical. This study was done to analyse the clinical and functional outcome after both SBPCL and DBPCL reconstructions using autologous hamstring grafts. METHODS: This was a retrospective study including patients who underwent either DBPCL or SBPCL reconstruction for chronic symptomatic PCL injury. Clinical, functional and radiological evaluation was done pre-operatively and 3 months post-operatively and thereafter at every 6-month interval. Patients with a minimum follow-up of 24 months were included in the study. Pre-operative posterior translation was quantified by manual posterior drawer, KT 1000 measurement and stress radiography. Functional outcome was done using Lysholm and IKDC scores. MRI was done in all patients. RESULTS: Records of 40 patients were available with minimum follow-up of 24 months. Out of these, DBPCL reconstruction was done in 18 patients and SBPCL reconstruction was done in 22 patients. Four patients in DB (double-bundle PCL reconstruction) group and five in SB (single-bundle PCL reconstruction) group had more than grade I laxity by posterior drawer and on KT 1000 measurement DB group had average side-to-side difference of 1.78 mm and SB group 2.44 mm (p value = 0.0487). On functional assessment by Lysholm and IKDC score, there was significant improvement from pre-operative values in both the groups with no significant difference between the groups post-operatively. Stress radiography revealed significantly less post-translation in DB group as compared to SB group. CONCLUSION: Though DBPCL reconstruction results in less posterior laxity, there is no difference in functional outcome of SBPCL and DBPCL reconstructions. LEVEL OF EVIDENCE: III.


Assuntos
Artroscopia/métodos , Tendões dos Músculos Isquiotibiais/transplante , Traumatismos do Joelho/cirurgia , Reconstrução do Ligamento Cruzado Posterior/métodos , Ligamento Cruzado Posterior/lesões , Adulto , Autoenxertos , Feminino , Humanos , Traumatismos do Joelho/diagnóstico , Masculino , Ligamento Cruzado Posterior/diagnóstico por imagem , Ligamento Cruzado Posterior/cirurgia , Estudos Retrospectivos
10.
Chin J Traumatol ; 19(5): 295-297, 2016 Oct 01.
Artigo em Inglês | MEDLINE | ID: mdl-27780512

RESUMO

A neglected shoulder dislocation is a rarer entity and only few cases are reported in the literature. An anterior dislocation of the shoulder is rarely missed as patients present with limb in abduction and external rotation, an attitude very familiar to orthopaedic surgeon. Occasionally such cases are missed when they present with fracture of proximal humerus or when they receive treatment from unqualified practitioners who commonly practise in rural areas. Owing to very few reports there is paucity of literature and no standard treatment protocol exists for neglected anterior dislocation of the shoulder, though most such chronic cases are managed by open reduction. This case report describes a six months old neglected anterior dislocation with a significant Hill Sachs lesion, which was managed by closed reduction and Latarjet procedure.


Assuntos
Procedimentos Ortopédicos/métodos , Luxação do Ombro/cirurgia , Adulto , Humanos , Masculino , Luxação do Ombro/diagnóstico por imagem
12.
J Comput Assist Tomogr ; 38(1): 53-60, 2014.
Artigo em Inglês | MEDLINE | ID: mdl-24378891

RESUMO

OBJECTIVE: To evaluate qualitative and simple quantitative measures of all 4 cardiac chamber sizes on computed tomography (CT) in comparison with transthoracic echocardiography (TTE). METHODS: We retrospectively identified 104 adults with electrocardiographically gated cardiac CT and TTE within 3 months. Axial early diastolic (75% R-R) CT images were reviewed for qualitative chamber enlargement, and each chamber was measured linearly. Transthoracic echocardiography was reviewed for linear, area, and volume measurements. Interrater agreement was calculated using Cohen κ and Pearson correlation. RESULTS: There were significant correlations between linear left atrium and left ventricle sizes by CT and TTE (r = 0.686 and r = 0.709, respectively). Correlations for right atrium and right ventricle measurements were lower (r = 0.447 and r = 0.492, respectively). Agreement between CT and TTE for qualitative chamber enlargement was poor (highest κ = 0.35). Computed tomography sensitivity was ≤ 62% for enlargement of all chambers. CONCLUSIONS: Linear CT measurements of left-sided chamber sizes correlate well with TTE. Right heart measurements and qualitative assessments agreed poorly with TTE.


Assuntos
Ecocardiografia/métodos , Átrios do Coração/anatomia & histologia , Ventrículos do Coração/anatomia & histologia , Tomografia Computadorizada por Raios X/métodos , Técnicas de Imagem de Sincronização Cardíaca , Meios de Contraste , Feminino , Átrios do Coração/diagnóstico por imagem , Ventrículos do Coração/diagnóstico por imagem , Humanos , Masculino , Pessoa de Meia-Idade , Estudos Retrospectivos , Ácidos Tri-Iodobenzoicos
13.
Emerg Radiol ; 21(4): 381-6, 2014 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-24638997

RESUMO

High-density pericardial fluid may be seen on noncontrast CT performed following cardiac catheterization (CC), raising the possibility of hemopericardium. Our goal was to determine the clinical course and associations of incidentally discovered high-attenuation pericardial fluid on noncontrast CT performed soon after CC. Hospital database search over a 7.5-year period identified 211 patients who underwent CT of the chest and/or abdomen within 60 h before or after CC, 150 having CC first. Pericardial fluid volume and attenuation as well as relevant laboratory and clinical parameters were recorded. Bivariate associations with average pericardial fluid attenuation (HUavg) were assessed. Using the 61 patients with CT before CC as controls, 44 of the patients with CC first had attenuation values greater than the mean + 2SD of 22.6 Hounsfield unit (HU) and 19 had attenuation values greater than the maximum control patient value of 39.8 HU. All patients with incidental finding of high-density pericardial fluid followed a benign course. Bivariate correlations showed time gap between CC and CT (rho = -0.50, p < 0.001), estimated glomerular filtration rate (eGFR) (rho = -0.24, p = 0.004), and female gender (median (IQR) 17.4 (13.6, 29.6) vs. 15.8 (9.9, 23.7), p = 0.02) to be associated with HUavg. In multiple linear regression analysis, only time gap and female gender were independently significantly associated with average attenuation (both p < 0.001). The finding that patients with incidentally discovered high-density pericardial fluid followed an uneventful course suggests a benign etiology such as vicarious excretion, and in patients who are otherwise stable, observation rather than immediate intervention should be considered.


Assuntos
Cateterismo Cardíaco , Derrame Pericárdico/diagnóstico por imagem , Tomografia Computadorizada por Raios X/métodos , Idoso , Idoso de 80 Anos ou mais , Biomarcadores/sangue , Meios de Contraste , Feminino , Humanos , Achados Incidentais , Masculino , Pessoa de Meia-Idade , Estudos Retrospectivos
14.
J Assoc Physicians India ; 62(6): 531-3, 2014 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-25856923

RESUMO

Wilson's disease is known for its protean manifestations due to abnormal copper metabolism. Although liver, brain and eyes are the well established sites for the latter but it can be speculated for other organs too. We report a case of Wilson's disease with tricuspid regurgitation possibly due to abnormal deposition of copper in heart.


Assuntos
Degeneração Hepatolenticular/diagnóstico , Adolescente , Humanos , Masculino , Terminologia como Assunto
15.
Expert Opin Drug Deliv ; 21(2): 187-210, 2024 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-38243810

RESUMO

INTRODUCTION: Amphotericin B (AmB), a promising antifungal and antileishmanial drug, acts on the membrane of microorganisms. The clinical use of AmB is limited due to issues associated with its delivery including poor solubility and bioavailability, instability in acidic media, poor intestinal permeability, dose and aggregation state dependent toxicity, parenteral administration, and requirement of cold chain for transport and storage, etc. AREAS COVERED: Scientists have formulated and explored various covalent conjugates of AmB to reduce its toxicity with increase in solubility, oral bioavailability, and payload or loading of AmB by using various polymers, lipids, carbon-based nanocarriers, metallic nanoparticles, and vesicular carriers, etc. In this article, we have reviewed various conjugates of AmB with polymers and nanomaterials explored for its delivery to give a deep insight regarding further exploration in future. EXPERT OPINION: Covalent conjugates of AmB have been investigated by scientists, and preliminary in vitro and animal investigations have given successful results, which are required to be validated further with systematic investigation on safety and therapeutic efficacy in animals followed by clinical trials.


Assuntos
Anfotericina B , Nanoestruturas , Animais , Anfotericina B/uso terapêutico , Anfotericina B/toxicidade , Antifúngicos/uso terapêutico , Polímeros , Solubilidade , Portadores de Fármacos
16.
Infect Med (Beijing) ; 3(1): 100088, 2024 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-38444748

RESUMO

Background: Chikungunya virus (CHIKV) is an infectious agent that caused several outbreaks among different countries and affected approximately 1.3 million Indian populations. It is transmitted by Aedes mosquito-either A. albopictus or A. aegypti. Generally, the clinical manifestations of CHIKV infection involve high-grade fever, joint pain, skin rashes, headache, and myalgia. The present study aims to investigate the relationship between the CHIKV virus load and clinical symptoms of the CHIKV infection so that better patient management can be done in the background of the CHIKV outbreak as there is no licensed anti-viral drug and approved vaccines available against CHIKV. Methods: CHIKV RTPCR positive samples (n = 18) (Acute febrile patients having D.O.F ≤ 7 days) were taken for the quantification of CHIKV viremia by Real-Time PCR. Clinical features of the febrile patients were recorded during the collection of blood samples. Results: The log mean virus load of 18 RT-PCR-positive samples was 1.3 × 106 copies/mL (1.21 × 103-2.33 × 108 copies/mL). Among the observed clinical features, the log mean virus load (CHIKV) of the patients without skin rash is higher than in the patients with skin rash (6.61 vs 5.5, P = 0.0435). Conclusion: The conclusion of the study was that the patients with skin rashes had lower viral load and those without skin rashes had higher viral load.

17.
AJR Am J Roentgenol ; 200(2): 337-42, 2013 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-23345355

RESUMO

OBJECTIVE: CT myocardial perfusion imaging is an emerging diagnostic modality that is under intensive study but not yet widely used in clinical practice. The purpose of this study is to evaluate the performance of resting 64-MDCT in revealing ischemia identified on radionuclide myocardial perfusion imaging (MPI). MATERIALS AND METHODS: We retrospectively identified 35 patients (20 women and 15 men; mean age, 52 years) with myocardial ischemia found on MPI who underwent retrospectively gated CT within 90 days of MPI. Myocardial perfusion on CT was evaluated using both a visual (n = 35) and an automated (n = 34) method. For the visual method, myocardial segments were evaluated qualitatively in systole and diastole. For the automated method, subendocardial perfusion of the standard 17 American Heart Association segments was measured using a commercially available tool in both systole and diastole. Differences between systolic and diastolic perfusion were computed. RESULTS: Five hundred eighty myocardial segments were evaluated, 152 of which were ischemic on MPI. Visual analysis had a sensitivity of 16% (24/152), specificity of 92% (393/428), positive predictive value of 40% (24/60), and negative predictive value of 75% (392/520) in systole, and a sensitivity of 18% (27/152), specificity of 89% (382/428), positive predictive value of 37% (27/73), and negative predictive value of 75% (382/507) in diastole, as compared with MPI. There was no significant difference in subendocardial perfusion between ischemic and nonischemic segments by the automated method. There was no significant difference in CT perfusion between patients with and without obstructive coronary artery disease on CT angiography using the visual or automated methods. CONCLUSION: Resting 64-MDCT is unsuitable for clinical use in revealing ischemia seen on MPI.


Assuntos
Isquemia Miocárdica/diagnóstico por imagem , Tomografia por Emissão de Pósitrons/métodos , Tomografia Computadorizada por Raios X/métodos , Adolescente , Adulto , Idoso , Técnicas de Imagem de Sincronização Cardíaca/métodos , Meios de Contraste , Angiografia Coronária , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Valor Preditivo dos Testes , Interpretação de Imagem Radiográfica Assistida por Computador , Estudos Retrospectivos , Sensibilidade e Especificidade , Estatísticas não Paramétricas , Ácidos Tri-Iodobenzoicos
18.
AJR Am J Roentgenol ; 200(4): 805-11, 2013 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-23521452

RESUMO

OBJECTIVE: The purpose of this article is to assess the diagnostic performance of the unenhanced and contrast-enhanced phases separately in patients imaged with CT for suspected acute aortic syndromes. MATERIALS AND METHODS: All adults (n = 2868) presenting to our emergency department from January 1, 2006, through August 1, 2010, who underwent unenhanced and contrast-enhanced CT of the chest and abdomen for suspected acute aortic syndrome were retrospectively identified. Forty-five patients with acute aortic syndrome and 45 healthy control subjects comprised the study population (55 women; mean age, 61 ± 16 years). Unenhanced followed by contrast-enhanced CT angiography (CTA) images were reviewed. Contrast-enhanced CTA examinations of case patients and control subjects with isolated intramural hematoma were reviewed. Radiation exposure was estimated by CT dose-length product. RESULTS: Forty-five patients had one or more CT findings of acute aortic syndrome: aortic dissection (n = 32), intramural hematoma (n = 27), aortic rupture (n = 10), impending rupture (n = 4), and penetrating atherosclerotic ulcer (n = 2). Unenhanced CT was 89% (40/45) sensitive and 100% (45/45) specific for acute aortic syndrome. Unenhanced CT was 94% (17/18) and 71% (10/14) sensitive for type A and type B dissection, respectively (p = 0.142). Contrast-enhanced CTA was 100% (8/8) sensitive for isolated intramural hematoma. Mean radiation effective dose was 43 ± 20 mSv. CONCLUSION: Unenhanced CT performed well in detection of acute aortic syndrome treated surgically, although its performance does not support its use in place of contrast-enhanced CTA. Unenhanced CT may be a reasonable first examination for rapid triage when IV contrast is contraindicated. Contrast-enhanced CTA was highly sensitive for intramural hematoma, suggesting that unenhanced imaging may not always be needed. Acute aortic syndrome imaging protocols should be optimized to reduce radiation dose.


Assuntos
Doenças da Aorta/diagnóstico por imagem , Aortografia/métodos , Tomografia Computadorizada por Raios X/métodos , Doença Aguda , Idoso , Idoso de 80 Anos ou mais , Estudos de Casos e Controles , Distribuição de Qui-Quadrado , Meios de Contraste , Feminino , Humanos , Iohexol/análogos & derivados , Modelos Lineares , Masculino , Pessoa de Meia-Idade , Doses de Radiação , Estudos Retrospectivos , Sensibilidade e Especificidade , Estatísticas não Paramétricas , Síndrome , Ácidos Tri-Iodobenzoicos
19.
Int J Biochem Mol Biol ; 14(4): 40-50, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-37736391

RESUMO

BACKGROUND: There is insufficient data on the prevalence and consequences of eating disorders in Type 2 diabetic patients. OBJECTIVE: To evaluate the presence of eating disorders (ED) and their association with glycaemic control and metabolic parameters in adult patients with type 2 diabetes mellitus (T2DM). MATERIALS AND METHODS: A cross-sectional study on 145 patients was conducted in the medicine outpatient unit of HAHC Hospital, Jamia Hamdard tertiary care center. The Eating Attitudes Test (EAT-26) was used to screen for ED in adults with T2DM. The Score of less than 20 and more than 30 on EAT-26 questionnaire was defined as control for participants and relevant medical details like duration of treatment, glycaemic control, complications were recorded. RESULTS: A total of 145 diabetic individuals participated in this study. Out of these, 17.3% of individuals with T2DM screened positive for ED on EAT-26 scale and had a significant positive correlation in <20 groups and a significant negative correlation in >30 groups. CONCLUSION: Our study reveals that eating disorders are not very common in our clinical population of T2DM, the prevalence rates of eating disorders are lower in patients with T2DM than those reported from developed western countries.

20.
Curr Pharm Des ; 29(10): 732-747, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-36999427

RESUMO

Recently, breast cancer has reached the highest incident rate amongst all the reported cancers, and one of its variants, known as triple-negative breast cancer (TNBC), is deadlier compared to the other types of breast cancer due to a lack of feasible diagnostic techniques. Advancements in nanotechnology have paved the way to formulate several nanocarriers with the ability to deliver anticancer drugs effectively and selectively to cancer cells with minimum side effects to non-cancerous cells. Nanotheranostics is a novel approach that can be used in the diagnosis of disease along with therapeutic effects. Currently, various imaging agents, such as organic dyes, radioactive agents, upconversion nanoparticles, various contrasting agents, quantum dots, etc., are being explored for the imaging of internal organs or to examine drug distribution. Furthermore, ligand-targeted nanocarriers, which have the potential to target cancer sites, are being used as advanced agents for cancer theranostic applications, including the identification of various metastatic sites of the cancerous tumor. This review article discusses the need for theranostic application in breast cancer with various imaging techniques, the latest nanotheranostic carriers in breast cancer, and related safety and toxicity issues, as well as highlights the importance of nanotheranostics in breast cancer, which could be helpful in deciphering questions related to nanotheranostic systems.


Assuntos
Antineoplásicos , Nanopartículas , Neoplasias de Mama Triplo Negativas , Humanos , Nanomedicina Teranóstica/métodos , Antineoplásicos/uso terapêutico , Nanopartículas/uso terapêutico , Portadores de Fármacos , Neoplasias de Mama Triplo Negativas/diagnóstico , Neoplasias de Mama Triplo Negativas/tratamento farmacológico
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