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PURPOSE: Breast cancer, a common malignancy in Indian women, is preventable and curable upon early diagnosis. Screening is the best control strategy against breast cancer, but its uptake is low in India despite dedicated strategies and programmes. We explored the impact of socio-cultural and financial issues on the uptake of breast cancer screening behaviour among Indian women. METHODS: Breast cancer screening-uptake and relevant social, cultural, and financial data obtained from the National Family Health Survey (NFHS) round 5 were used for analysis. We studied 399,039 eligible females to assess their breast cancer screening behavior and determine the impact of socio-cultural and financial issues on such behavior using multivariable logistic regression. RESULTS: Most participants were 30-34-year-old (27.8%), educated to the secondary level (38.0%), and 81.5% had bank accounts. A third (35.0%) had health insurance, and anaemia was the most common comorbidity (56.1%). Less than 1.0% had undergone breast cancer screening. Higher age, education, urban residence, employment, less privileged social class, and access to the Internet and mass media were predictors of positive screening-uptake behavior (p < 0.05). Mothers of larger number of children, tobacco- and alcohol-users, the richer and having health insurance had negative uptake behavior (p < 0.05). CONCLUSION: A clear impact of socio-cultural and financial factors on breast cancer screening behavior is evident among Indian women. Therefore, apart from the ongoing health system strengthening efforts, our findings call for targeted interventions against prevailing misconceptions and taboos along with economic and social empowerment of women for the holistic success of India's cancer screening strategy.
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Neoplasias de la Mama , Tamizaje Masivo , Aceptación de la Atención de Salud , Factores Socioeconómicos , Humanos , Anciano de 80 o más Años , Femenino , Adulto , Persona de Mediana Edad , Neoplasias de la Mama/diagnóstico , Neoplasias de la Mama/epidemiología , Neoplasias de la Mama/prevención & control , Tamizaje Masivo/economía , India/epidemiología , Conductas Relacionadas con la Salud/etnología , Aceptación de la Atención de Salud/etnología , Detección Precoz del Cáncer/economía , Detección Precoz del Cáncer/psicologíaRESUMEN
COVID-19 tended to be less aggressive in dengue endemic regions. Conversely, dengue cases plummeted in dengue endemic zones during the active years of the pandemic (2020-2021). We and others have demonstrated serological cross-reactivity between these two viruses of different families. We further demonstrated that COVID-19 serum samples that were cross-reactive in dengue virus (DV) serological tests, "cross-neutralized" all DV serotypes in Huh7 cells. Here we showed by co-immunoprecipitation (Co-IP) and atomic force microscopy (AFM) imaging that severe acute respiratory syndrome (SARS)-coronavirus (CoV)-2 (SARS-CoV-2) spike (S) protein subunit S1 and S2 monoclonal antibodies can indeed, bind to DV particles. Likewise, DV envelope antibodies (DV E Abs) showed high docking frequency with other human pathogenic beta-CoVs and murine hepatitis virus-1 (MHV-1). SARS-CoV-2 Ab didn't show docking or Co-IP with MHV-1 supporting poor cross-protection among CoVs. DV E Abs showed binding to MHV-1 (AFM, Co-IP, and immunofluorescence) and prepandemic dengue patients' serum samples even "cross-neutralized" MHV-1 plaques in cell culture. Furthermore, dengue serum samples showed marked inhibition potential in a surrogate virus-based competitive enzyme-linked immunosorbent assay, used for determining neutralizing Abs against SARS-CoV-2 S protein receptor-binding domain in COVID-19 serum samples. We therefore, provide multiple evidence as to why CoVs are epidemiologically less prevalent in highly dengue endemic regions globally.
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Anticuerpos Antivirales , COVID-19 , Reacciones Cruzadas , Virus del Dengue , Dengue , SARS-CoV-2 , Glicoproteína de la Espiga del Coronavirus , Virus del Dengue/inmunología , Humanos , Dengue/inmunología , Dengue/epidemiología , Dengue/virología , Anticuerpos Antivirales/sangre , Anticuerpos Antivirales/inmunología , SARS-CoV-2/inmunología , Glicoproteína de la Espiga del Coronavirus/inmunología , COVID-19/inmunología , COVID-19/epidemiología , COVID-19/virología , Anticuerpos Neutralizantes/sangre , Anticuerpos Neutralizantes/inmunología , Animales , Anticuerpos Monoclonales/inmunología , Enfermedades EndémicasRESUMEN
INTRODUCTION: India has run a nationwide vaccination campaign against COVID-19, which has recently introduced a precaution (third) dose for health workers. This study assessed the perception and attitude of health workers toward the Indian vaccination campaign against COVID-19, with an emphasis on this major change. MATERIALS AND METHODS: A printed questionnaire was distributed among health-care workers at the Medical College of West Bengal. The completed forms were analyzed. RESULTS: Most of the participants were doctors (83.7%). Although all had received two doses of vaccine before, 44.4% were unwilling to be vaccinated with the third dose in the present scenario. The majority (63.8%) of the patients were concerned about side effects. The emergence of new COVID strains (65.6%) was viewed as a threat to the effectiveness of the vaccines. Participants with higher age, comorbidities, and those with the perception that the third dose was being introduced appropriately and would be effective against newer strains of the vaccine tended to be more willing to get vaccinated with the precaution dose compared to their counterparts. CONCLUSION: A dilemma regarding the acceptance of precaution doses was noted among health workers. This warrants the availability of more comprehensive information to increase acceptance of these vaccines.
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Vacunas contra la COVID-19 , COVID-19 , Personal de Salud , Humanos , India , Vacunas contra la COVID-19/administración & dosificación , Masculino , COVID-19/prevención & control , Femenino , Adulto , Personal de Salud/psicología , SARS-CoV-2 , Actitud del Personal de Salud , Persona de Mediana Edad , Encuestas y Cuestionarios , Vacunación/psicología , Adulto Joven , Vacilación a la Vacunación/psicologíaRESUMEN
BACKGROUND: Limited data are available on the effects of systemic immunomodulatory treatments on COVID-19 outcomes in patients with atopic dermatitis (AD). OBJECTIVE: To investigate COVID-19 outcomes in patients with AD treated with or without systemic immunomodulatory treatments, using a global registry platform. METHODS: Clinicians were encouraged to report cases of COVID-19 in their patients with AD in the Surveillance Epidemiology of Coronavirus Under Research Exclusion for Atopic Dermatitis (SECURE-AD) registry. Data entered from 1 April 2020 to 31 October 2021 were analysed using multivariable logistic regression. The primary outcome was hospitalization from COVID-19, according to AD treatment groups. RESULTS: 442 AD patients (mean age 35.9 years, 51.8% male) from 27 countries with strongly suspected or confirmed COVID-19 were included in analyses. 428 (96.8%) patients were treated with a single systemic therapy (n = 297 [67.2%]) or topical therapy only (n = 131 [29.6%]). Most patients treated with systemic therapies received dupilumab (n = 216). Fourteen patients (3.2%) received a combination of systemic therapies. Twenty-six patients (5.9%) were hospitalized. No deaths were reported. Patients treated with topical treatments had significantly higher odds of hospitalization, compared with those treated with dupilumab monotherapy (odds ratio (OR) 4.65 [95%CI 1.71-14.78]), including after adjustment for confounding variables (adjusted OR (aOR) 4.99 [95%CI 1.4-20.84]). Combination systemic therapy which did not include systemic corticosteroids was associated with increased odds of hospitalization, compared with single agent non-steroidal immunosuppressive systemic treatment (OR 8.09 [95%CI 0.4-59.96], aOR 37.57 [95%CI 1.05-871.11]). Hospitalization was most likely in patients treated with combination systemic therapy which included systemic corticosteroids (OR 40.43 [95%CI 8.16-207.49], aOR 45.75 [95%CI 4.54-616.22]). CONCLUSIONS: Overall, the risk of COVID-19 complications appears low in patients with AD, even when treated with systemic immunomodulatory agents. Dupilumab monotherapy was associated with lower hospitalization than other therapies. Combination systemic treatment, particularly combinations including systemic corticosteroids, was associated with the highest risk of severe COVID-19.
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COVID-19 , Dermatitis Atópica , Humanos , Masculino , Adulto , Femenino , Dermatitis Atópica/tratamiento farmacológico , Resultado del Tratamiento , Corticoesteroides/uso terapéutico , Sistema de Registros , Índice de Severidad de la EnfermedadRESUMEN
Background: Domestic work being unrecognized as a formal form of occupation in India, workers are often deprived of basic social security, including access to proper health care. Self-negligence coupled with societal neglect makes them vulnerable to injury and a variety of illnesses. Objectives: We aimed to study the morbidity pattern of women domestic workers residing in a slum area of Kolkata, West Bengal, India. Materials and Methods: An observational descriptive cross-sectional study was carried out by interviewing and clinically examining 106 randomly selected women domestic workers. Results: The majority (82.08%) had health complaints: heart burn being most common (40.57%). Musculoskeletal and dermatological issues were common. Anemia (31.25%) was a common prediagnosed morbidity. Pallor (33.96%) and dental caries (31.13%) were common; 50.94% reported workplace injury. Of those having complaints, 77.36% sought health care, 59.43% of whom relied on health facilities. Lack of time (54.05%), felt need (35.14%) and money (21.62%) affected adequate care seeking. Participants with cardiorespiratory complaints tended to visit health facilities significantly more (P < 0.05). Conclusion: Health vulnerabilities and neglectful behavior among domestic workers are evident, making the need to sensitize them about their health risks and ways to overcome such issues very vital. Awareness should also be generated about government health schemes to encourage timely health checkup and necessary intervention.
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Caries Dental , Humanos , Femenino , Estudios Transversales , India/epidemiología , Aceptación de la Atención de Salud , MorbilidadRESUMEN
Epidermolysis-Bullosa (EB), a rare Mendelian disorder, exhibits complex phenotypic and locus-heterogeneity. We identified a nuclear family of clinically unaffected parents with two offsprings manifesting EB-Pyloric-Atresia (EB-PA), with a variable clinical severity. We generated whole exome sequence data on all four individuals to (1) identify the causal mutation behind EB-PA (2) understand the background genetic variation for phenotype variability of the siblings. We assumed an autosomal recessive mode of inheritance and used suites of bioinformatic and computational tools to collate information through global databases to identify the causal genetic variant for the disease. We also investigated variations in key genes that are likely to impact phenotype severity. We identified a novel missense mutation in the ITGB4 gene (p.Ala1227Asp), for which the parents were heterozygous and the children homozygous. The mutation in ITGB4 gene, predicted to reduce the stability of the primary alpha6beta4-plectin complex compared to all previously studied mutations on ITGB4 reported to cause EB.
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Displasia Ectodérmica , Epidermólisis Ampollosa , Humanos , Plectina/genética , Mutación Missense/genética , Epidermólisis Ampollosa/genética , Displasia Ectodérmica/genética , Mutación , Integrina beta4/genéticaRESUMEN
Dengue diagnosis primarily relies on NS1 ELISA and serological (IgG/IgM) tests. There are reports of low and variable sensitivity of the widely used NS1 ELISA tests. Poor sensitivity has been attributed to patient's infection status, prevalent serotypes, and the geographical origin of the samples. We investigated whether NS1 mutations directly have any impact on NS1 ELISA-based dengue virus (DENV) detection in clinical samples. Fifty-eight serum samples were collected from dengue-endemic area during 2015-2017 and tested with three commonly used NS1 ELISA kits. The samples were subjected to diagnostic RT-PCR and sequencing of structural gene(s). Sequencing of NS1 gene revealed amino acid changes which were transferred to respective wild type NS1 backbone to determine their effects on NS1 production and secretion in Huh-7, Vero, and A549 cells. Eighty-seven percent samples were virus RNA-positive but 65% of these were NS1 ELISA-positive. NS1-gene mutations like Val236âAla (DENV2) or Trp68âstop codon in DENV3 were associated with decreased NS1 production and secretion. These mutations were originally identified in NS1 ELISA-negative clinical isolates. All DENV1 and > 80% DENV2 were NS1 ELISA-positive. The three NS1 ELISA could not detect recently circulating DENV3 single infections despite being RNA-positive. Among serotypes 1-3, wild-type NS1 production was highest for DENV1 and lowest for DENV3 in all cell lines tested. Mutations in circulating DENV directly correlated with NS1 production and secretion and, hence, ELISA-based NS1 detection. Further studies to define more NS1 mutations in clinical samples are needed to optimize ELISA kits for more sensitive dengue diagnosis.
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Virus del Dengue , Dengue , Anticuerpos Antivirales , Ensayo de Inmunoadsorción Enzimática , Humanos , Mutación , ARN Viral , Sensibilidad y Especificidad , Proteínas no Estructurales ViralesRESUMEN
The spatial processing of color is important for visual perception. Double-opponent (DO) cells likely contribute to this processing by virtue of their spatially opponent and cone-opponent receptive fields (RFs). However, the representation of visual features by DO cells in the primary visual cortex of primates is unclear because the spatial structure of their RFs has not been fully characterized. To fill this gap, we mapped the RFs of DO cells in awake macaques with colorful, dynamic white noise patterns. The spatial RF of each neuron was fitted with a Gabor function and three versions of the difference of Gaussians (DoG) function. The Gabor function provided the more accurate description for most DO cells, a result that is incompatible with a center-surround RF organization. A nonconcentric version of the DoG function, in which the RFs have a circular center and a crescent-shaped surround, performed nearly as well as the Gabor model thus reconciling results from previous reports. For comparison, we also measured the RFs of simple cells. We found that the superiority of the Gabor fits over DoG fits was slightly more decisive for simple cells than for DO cells. The implications of these results on biological image processing and visual perception are discussed.NEW & NOTEWORTHY Double-opponent cells in macaque area V1 respond to spatial chromatic contrast in visual scenes. What information they carry is debated because their receptive field organization has not been characterized thoroughly. Using white noise analysis and statistical model comparisons, De and Horwitz show that many double-opponent receptive fields can be captured by either a Gabor model or a center-with-an-asymmetric-surround model but not by a difference of Gaussians model.
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Estimulación Luminosa/métodos , Percepción Espacial/fisiología , Corteza Visual/fisiología , Campos Visuales/fisiología , Vías Visuales/fisiología , Animales , Femenino , Macaca mulatta , Masculino , Corteza Visual/citología , Vías Visuales/citologíaRESUMEN
Cyberbullying is a newer phenomenon which is becoming more prevalent among adolescent students with the use of information technology. The objective of the study was to determine the prevalence of being cyberbullied among late adolescent and to study the behavior and the attitude on cyberbullying. It was a cross-sectional study conducted on 254 school students (15-19 years). Data were collected by self-administered questionnaire, and results were analyzed using SPSS version 20. About 210 (82.7%) students were using any form of social networking site and out of which 22 (10.5%) students were cyberbullied. Among those who were cyberbullied, the majority (16 [72.7%]) had no opinion and more than half (15 [68.2%]) sought their friends' help. Cyberbullying is emerging as a newer social problem in our country, where students' lack of awareness and understanding of it results in underreporting of cyberbullying incidents.
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Ciberacoso/estadística & datos numéricos , Redes Sociales en Línea , Adolescente , Conducta del Adolescente , Estudios Transversales , Femenino , Humanos , India , Masculino , Prevalencia , Adulto JovenAsunto(s)
Urticaria Crónica , Urticaria , Bencimidazoles , Cetirizina , Enfermedad Crónica , Humanos , India , Piperidinas , Urticaria/diagnóstico , Urticaria/tratamiento farmacológicoRESUMEN
Chronic venous ulcer can often be associated with asymptomatic peripheral arterial disease (PAD), which usually remains undiagnosed adding significantly to the morbidity of these patients. The Ankle-Brachial Pressure Index (ABPI) is suggested for PAD evaluation. Many PAD studies were conducted in western countries, but there is a scarcity of data on the prevalence of PAD in clinical venous ulcer patient in developing countries. We conducted a study in a tertiary care hospital of eastern part of India to find out the prevalence of PAD in venous ulcer patients, and also to find the sensitivity of ABPI as a diagnostic tool in these patients. We evaluated clinically diagnosed patients with venous ulcer using ABPI and Colour Doppler study for the presence of PAD. Possible associations such as age, sex, body mass index (BMI), smoking, hypertension and atherosclerosis were studied. All results were analysed using the software Statistica version 6. PAD was present in 23 (27·71%) patients. Older age, longer duration, smoking, high BMI and hypertension were found to be significantly associated with PAD. A very strong level of agreement was found between venous Doppler and ABPI. Assessment for the presence of PAD is important in all clinically diagnosed venous ulcer patients. ABPI being a simple, non-invasive outpatient department (OPD)-based procedure, can be routinely used in cases of venous ulcer to find out the hidden cases of PAD even in developing countries.
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Úlcera de la Pierna/diagnóstico , Úlcera de la Pierna/epidemiología , Enfermedad Arterial Periférica/diagnóstico , Enfermedad Arterial Periférica/epidemiología , Úlcera Varicosa/diagnóstico , Úlcera Varicosa/epidemiología , Adulto , Factores de Edad , Anciano , Anciano de 80 o más Años , Índice Tobillo Braquial , Enfermedad Crónica/epidemiología , Países en Desarrollo/estadística & datos numéricos , Femenino , Humanos , India/epidemiología , Masculino , Persona de Mediana Edad , Prevalencia , Factores de Riesgo , Factores SexualesRESUMEN
Background: Fixed drug reaction (FDE) is characterized by the development of well-circumscribed, round, erythematous macules and plaques on cutaneous or mucosal surface following ingestion of the offending drug. Aim and Objectives: To study the etiological agents responsible for FDE and to study the clinical patterns of FDE due to different drugs. Materials and Methods: It was a hospital-based observational cross-sectional clinical study. The study period was 24 months. Fifty patients were included. The study was done after a literature search, hypothesis generation, protocol write-up, ethical submission, ethical clearance, patient enrollment, data collection, data analysis, and research. The patients were selected on the basis of the Naranjo scoring system. The patients with a history of combination drug intake were not included in the study. Results: A total of 0.11% patients presented with FDE in the study period. Out of them, 52% of the patients belonged to 20-39 years age group, having sex ratio of 1.6:1. About 64% of the patients presented with multiple lesions, whereas 36% had a single lesion. A total of 46% patients presented with first episode and 54% had recurrent episodes. The mean time intervals of first and subsequent episodes were 6.5 days and 4.3 hours, respectively. Also, 16% patients had a history of herpes infection. Extremities were more affected followed by trunk and mucosa. Fluoroquinolones were the most common etiological agent found in 56% patients having cutaneous (48%) and mucosal lesions (14%). The most common drug was norfloxacin (36%) followed by both paracetamol (12%) and metronidazole (12%). Fluoroquinolones were the most common drugs implicated in bullous lesions and generalized bullous FDE. Limitations: The study population was small and the study was for a limited period of time. Conclusion: The patient should be aware of the offending drug and opt for any alternative agent after visiting the physician.
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The nose is a common site for many dermatological disorders and even skin cancers. Herein, we report a case of an elderly man who presented with papular lesions on his nose. A 64-year-old man presented with a cluster of four to five skin-colored papules on his nose for the last two years which were gradually increasing in size. He also had rhinophyma for the past 10 years. Routine investigations and histopathological examination were performed. On biopsy, it was revealed to be nevus lipomatosus cutaneous superficialis, a rare, benign hamartomatous anomaly found mostly in lower parts of the body like the buttocks and hence not usually considered a differential in such cases. It is essential to know about this rare entity as well as its atypical features to consider it as a differential diagnosis for such lesions on the nose.
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Psoriasis is a chronic inflammatory skin condition affecting millions of individuals worldwide. Over the years, various treatment modalities have been explored to alleviate the symptoms and improve the quality of life for patients with psoriasis. Among these treatment options, lasers and lights have emerged as promising non-invasive approaches with significant efficacy. This review aims to provide an overview of the current understanding and clinical applications of lasers and lights in the management of psoriasis. We have discussed the mechanisms of action behind different laser and light therapies and their impact on psoriatic plaques. Additionally, we discuss the various types of lasers and lights utilized, including excimer lasers, pulsed dye lasers, and narrowband ultraviolet B (NB-UVB) phototherapy, highlighting their unique properties and clinical outcomes. Moreover, we have addressed important considerations related to patient selection, treatment protocols, and potential side effects associated with lasers and lights. We emphasize the need for proper evaluation, monitoring, and customization of treatment plans to ensure optimal outcomes and minimize adverse events.
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Introduction: The treatment options for chronic spontaneous urticaria (CSU) primarily include second generation non-sedative antihistamine (SGAHs). Bilastine is a newer, nonsedating SGAH approved for urticaria in February 2019 by the Drugs Controller General of India. Its major advantages are in terms of superior efficacy, lack of drug interactions and adverse effects, including sedation, compared to conventional SGAHs. The role of cytokines in the pathogenesis of CSU is well known. However, there is a shortage of data regarding the change in serum levels of proinflammatory cytokines following H1 antihistamines. We conducted this trial to evaluate the role of bilastine in cytokine modulation and autoimmunity, thereby explaining its role in modifying the disease process in CSU. Materials and Methods: This prospective study was conducted in a tertiary institute in Kolkata on patients aged 12 years and above with a CSU >6 months. These patients had an unsatisfactory response, as per the Urticaria Activity Score 7 (UAS7), to previous antihistamine therapies in standard doses. Treatment effectiveness was determined by comparing the UAS7 at baseline with that at weeks 4, 8 and 12. Also, baseline serum interleukin-6 (IL-6) and IL-17 were compared with those at the end of the study, that is, 12 weeks. Results: Thirty patients who matched the inclusion criteria and signed informed consent were included in the study. At the end of 12 weeks, 10% of patients (n = 3) achieved a complete treatment response (UAS = 0), whereas 43.33% of patients (n = 13) were labelled as having well-controlled urticaria (UAS <6). At 12 weeks, the mean UAS7 score (6.47 ± 4.45) was statistically significant compared to the baseline score (25.47 ± 7.74). The mean values of serum IL-6 (pg/ml) and IL-17 (pg/ml) at baseline were 5.96 ± 5.24 pg/ml and 6.96 ± 5.97 pg/ml, respectively. At the end of treatment, that is, 3 months, the mean values were reduced to 4.61 ± 4.56 pg/ml and 5.08 ± 3.87 pg/ml. The reduction was statistically significant for both serum IL-6 (P < 0.001) and IL-17 (P < 0.0001). Conclusion: We conclude that bilastine at a once-daily continuous dose of 40 mg for 3 months is safe and effective in CSU patients who are refractory to treatment at the standard doses of SGAHs. Improved symptomatic control with bilastine was also associated with better control over the inflammatory process, as suggested by the lowering of mean cytokine levels in our study.
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Background: Adverse drug reactions (ADRs) are major problems in the drug therapy. Cutaneous adverse drug reactions (CADRs) are the most common ADRs. The pattern of CADRs differs among various drugs. Aims: To record various morphological patterns of CADRs and their causal relationships among patients attending in a tertiary care centre. Materials and Methods: An observational, cross-sectional, clinical study was conducted for a duration of one and a half years in a tertiary care centre in eastern India. Patients presenting with suspected CADRs were included if drug identity could be ascertained. Clinical profiling and drug history were recorded, and causality assessment was carried out as per the Naranjo scale. Result: The commonest CADR in our study was fixed drug eruption (FDE) 48.61%, followed by SJS-TEN spectrum 16.66%, maculopapular rash 11.11% and so on. Severe cutaneous adverse drug reactions (SCARs) such as SJS, TEN, SJS-TEN Overlap, AGEP and DRESS accounted for 18 cases (25%). The most common culprit drugs were antimicrobials (54.16%), followed by nonsteroidal anti-inflammatory drugs (15.27%) and anticonvulsants (12.5%). Most of the CADRs were in probable category. Conclusion: The pattern of CADRs and the drugs causing them in our study population are similar to some previous studies but somewhat different from most of the previous Indian studies. The incidence of SCARs was significantly higher than in previous other studies in India and abroad.
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Introduction. In India, the SARS-CoV-2 Delta wave (2020-2021) faded away with the advent of the Omicron variants (2021-present). Dengue incidences were observed to be less in Southeast Asia during the active years of the pandemic (2020-2021). However, dengue virus type 3 (DV3) cases were increasingly reported in this region (including India) concurrent with the progression of the Omicron waves since 2022.Hypothesis. What could be the reason(s) behind this unusual DV3 surge after an overall dip in dengue incidences in many parts of Southeast Asia?Aim. We, therefore, investigated the current state of cross-reactivity of prevalent (Omicron era) SARS-CoV-2 serums with different DV serotypes and evaluated the impact of such serums on DV neutralization in cell culture.Methodology. Fifty-five COVID-19 serum samples (January-September 2022) and three pre-pandemic archived serum samples from apparently healthy individuals were tested for DV or SARS-CoV-2 IgM/IgG using the lateral flow immunoassays. DV1-4 virus neutralization tests (VNTs) were done with the SARS-CoV-2 antibody (Ab)-positive serums in Huh7 cells. DV3 envelope (env) gene was PCR amplified and sequenced for three archived DV isolates, one from 2017 and two from 2021.Results. SARS-CoV-2 Ab-positive samples constituted 74.5â% of the serums. Of these, 41.5â% were DV cross-reactive and 58.5â% were not. The DV cross-reactive serums neutralized all DV serotypes (DV1-4), as per previous results and this study. The DV non-cross-reactive serums (58.5â%) also cross-neutralized DV1, 2 and 4 but increased DV3 infectivity by means of antibody-dependent enhancement of infection as evident from significantly higher DV3 titres in VNT compared to control serums. The DV3 envelope was identical among the three isolates, including isolate 1 used in VNTs. Our results suggest that DV cross-reactivity of SARS-CoV-2 serums diminished with the shift from Delta to Omicron prevalence. Such COVID-19 serums (DV non-cross-reactive) might have played a major role in causing DV3 surge during the Omicron waves.Conclusion. Patients suspected of dengue or COVID-19 should be subjected to virus/antigen tests and serological tests for both the diseases for definitive diagnosis, prognosis and disease management.
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Anticuerpos Antivirales , COVID-19 , Reacciones Cruzadas , Virus del Dengue , SARS-CoV-2 , Humanos , SARS-CoV-2/inmunología , SARS-CoV-2/genética , COVID-19/virología , COVID-19/epidemiología , COVID-19/sangre , COVID-19/inmunología , Anticuerpos Antivirales/sangre , Virus del Dengue/genética , Virus del Dengue/inmunología , Virus del Dengue/clasificación , India/epidemiología , Dengue/virología , Dengue/sangre , Dengue/epidemiología , Dengue/inmunología , Pruebas de Neutralización , Anticuerpos Neutralizantes/sangre , Anticuerpos Neutralizantes/inmunología , Inmunoglobulina G/sangre , Inmunoglobulina M/sangreRESUMEN
Pattern recognition receptors (PRRs), which are found in microorganisms but not in hosts, allow Leprae bacilli to be recognized as foreign. Several kinds of pattern recognition receptors, such as toll-like receptors (TLRs), NOD-like receptors (NLRs) and RIG-1-like receptors (RLRs), are present in the innate immune system. Sen and Baltimore (1986) discovered the transcription factor nuclear factor kappa-B (NF-B), employed by eukaryotic cells to regulate immunity, cell differentiation and proliferation. This study aimed to evaluate the role of the nuclear factor kappa B (NF-B) pathway in controlling the cytokine cascade in leprosy due to a lack of understanding of the link between cytokines and the severity of leprosy. Clinically suspected Hansen's patients were analysed for 4 years. Newly diagnosed leprosy patients were considered to have leprosy disease control (LDC). The cases with active or new lesions and an increase in BI by at least 2+, 12 months after completion of MDT were considered leprosy disease relapse (LDR) cases. Age- and sex-matched healthy individuals served as our control group (HC). An ELISA was performed to measure the concentration of five human cytokines. By qRT-PCR, the quantitative expression of receptor genes (NOD1 and NOD2), cytokine genes and the expression of the transcription factor NFκß were evaluated. This was followed by a transcription factor NFκß assay to see its expression in the monocytes of study subjects. Nuclear factor NF-κß was found to have a pronounced response in monocytes of HC and LDC patients and LDR cases when treated with NOD1 and NOD2 ligands. Our study concludes that the NF-kB pathway is involved in the induction and regulation of the cytokine cascade that contributes to chronic inflammation in leprosy.
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Stenotrophomonas maltophilia is a recently described organism which was mainly reported either in nosocomial setup, or in immunosuppresed individuals. This was rarely reported as cutaneous pathogenic organism causing cellulitis-like lesion, paronychia, mucocutaneous ulcers and ecthyma gangrenosum in immunocompromised individuals. Here we describe a case of leg ulcer caused by S. maltophilia in an immuno-competent patient. The infection was possibly community acquired as the patient had no exposure to hospital environment. The bacillus was sensitive to cotrimoxazole and levofloxacin, and the patient was successfully treated with cotrimoxazole. Our case is unique not only because it is probably the first ever case of leg ulcer caused by S. maltophilia, but also because of its unusual occurrence in immunocompetent patient.
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Antibacterianos/uso terapéutico , Infecciones por Bacterias Gramnegativas/tratamiento farmacológico , Huésped Inmunocomprometido , Úlcera de la Pierna/tratamiento farmacológico , Stenotrophomonas maltophilia/aislamiento & purificación , Cicatrización de Heridas , Estudios de Seguimiento , Infecciones por Bacterias Gramnegativas/complicaciones , Infecciones por Bacterias Gramnegativas/microbiología , Humanos , India , Úlcera de la Pierna/complicaciones , Masculino , Persona de Mediana EdadRESUMEN
Atopic dermatitis (AD) is a common chronic dermatological condition affecting ~10% of adults and ~20% of the paediatric population in high-income countries. There is a lack of comprehensive understanding of the disease burden of AD in India. In this systematic review, the primary objective was to review epidemiological data on AD in India based on articles published between 2011 and 2021. The secondary objective was to assess the disease burden from economic and quality of life (QoL) perspectives. A literature search was conducted using the PubMed and Google Scholar databases using predefined search strings. Relevant studies published in English on AD between 2011 and 2021 were included. This review included 11 articles, of which nine reported demographic and clinical characteristics. The reported prevalence ranged from 3.1% to 7.21% among the paediatric population, up to 16 years of age. The prevalence of AD ranged from 0.98% to 9.2% in studies including paediatric and adult patients. The cost of medications was reported to be the major contributor to the economic burden associated with AD. Mental illnesses such as depression and anxiety were frequently reported in association with AD. Although AD is a common disorder affecting all age groups, there is a lack of substantial epidemiological data. None of the current studies covers the entire country. Hence, studies with a wider geographic scope covering all aspects of disease burden are required to help clinicians and policymakers to understand the disease burden and devise appropriate preventive and management strategies.