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1.
J Am Acad Dermatol ; 84(5): 1321-1328, 2021 May.
Artigo em Inglês | MEDLINE | ID: mdl-33359595

RESUMO

BACKGROUND: Platelet-rich plasma has shown some promise in the treatment of alopecia areata. OBJECTIVE: To evaluate the effect of platelet-rich plasma on hair regrowth and lesional T-cell cytokine expression in alopecia areata. METHODS: This was a randomized, placebo-controlled, split-head study involving 27 patients with alopecia areata (Severity of Alopecia Tool score ≥25%). Alopecia patches on either side of the scalp were randomized to receive 3 intradermal injections of platelet-rich plasma or normal saline at monthly intervals and evaluated 3 months after the last session. Lesional T-cell cytokine messenger RNA expression was compared pre- and posttreatment in the platelet-rich plasma-treated sites. RESULTS: The mean Severity of Alopecia Tool score did not change significantly compared with baseline with either platelet-rich plasma or placebo injections at any visit; however, the mean percentage reduction in the score in the platelet-rich plasma arm was more than in the placebo arm (9.05% ± 36.48% vs 4.99% ± 33.88%; P = .049) at final assessment. The mean interferon gamma (P = .001) and interleukin 17 cytokine (P = .009) messenger RNA expression decreased, whereas the mean interleukin 10 (P = .049) and FOXP3 (P = .011) messenger RNA expression increased significantly after platelet-rich plasma treatment. LIMITATIONS: Small sample size and a relatively short follow-up. CONCLUSION: Platelet-rich plasma was found to have limited efficacy in alopecia areata. However, it may play a role in restoring immune balance in the alopecic patches.


Assuntos
Alopecia em Áreas/terapia , Citocinas/metabolismo , Folículo Piloso/crescimento & desenvolvimento , Plasma Rico em Plaquetas/imunologia , Adolescente , Adulto , Alopecia em Áreas/imunologia , Alopecia em Áreas/patologia , Transfusão de Sangue Autóloga/métodos , Método Duplo-Cego , Seguimentos , Folículo Piloso/citologia , Folículo Piloso/imunologia , Folículo Piloso/patologia , Humanos , Injeções Intradérmicas , Masculino , Projetos Piloto , Placebos/administração & dosagem , Placebos/efeitos adversos , Linfócitos T/imunologia , Linfócitos T/metabolismo , Resultado do Tratamento , Adulto Jovem
2.
Dermatol Ther ; 33(6): e13914, 2020 11.
Artigo em Inglês | MEDLINE | ID: mdl-32594603

RESUMO

Primary focal hyperhidrosis is a common reason for dermatology outpatient visit and has significant impact on patient's social and professional activities. The study describes the clinical profile of those patients and response with aluminum chloride hexahydrate lotion (ACH 20%) and oral glycopyrrolate (OGP). A retrospective study was carried out at a tertiary care center between the year 2016 and 2018. Details of history, baseline assessment, treatment response recorded in specially designed proformas were analyzed. Initially, the patients received topical ACH daily at night. Non-responders were advised OGP 1 mg BD and increased to 2 mg BD if they did not respond. Response was measured according to patient global assessment and objective evaluation of sweating. Among total 69 patients 57 had onset <10 years of age. There was male preponderance and most common trigger was situations causing anxiety (n = 15). Around 15.3% patients got adequate response with ACH lotion. The cumulative response increased to 45.8% by addition of OGP 1 mg BD and to 55.9% by increasing the dose to 2 mg BD. Addition of OGP to topical ACH increases the treatment efficacy in patients with primary focal hyperhidrosis. Increasing the glycopyrrolate dose augments the response further. However, the current medical treatment options are able to give moderate response.


Assuntos
Glicopirrolato , Hiperidrose , Cloreto de Alumínio , Glicopirrolato/efeitos adversos , Humanos , Hiperidrose/diagnóstico , Hiperidrose/tratamento farmacológico , Masculino , Estudos Retrospectivos , Centros de Atenção Terciária
3.
Natl Med J India ; 32(3): 147-152, 2019.
Artigo em Inglês | MEDLINE | ID: mdl-32129308

RESUMO

The syndromic approach has been the cornerstone of management of sexually transmitted infections (STIs) in developing countries. This strategy has had a considerable impact in decreasing the burden of STI in society. It offers the advantages of treating the infection at the first visit itself, reducing the risk of complications, non-reliance on laboratory diagnostics, and easy integration into the primary healthcare system. Nonetheless, it is not without limitations, most often criticized for its inability to treat asymptomatic cases. Syndromic management has been found to be satisfactory for genital ulcer disease and urethral discharge in several settings. However, its performance is not as good in the treatment of vaginal discharge syndrome, as it does not allow a distinction between cervicitis and vaginitis. Diagnostic validation and a review of its performance should be done periodically to keep abreast of the changing aetiology of various syndromes and patterns of drug susceptibility. Supplementing the syndromic approach with point-of-care tests and simple laboratory tests where available can improve its results. Further, healthcare professionals should be imparted training for optimum patient care. This narrative review critically appraises the syndromic approach to STIs, discusses the challenges that it faces, and offers suggestions to improve its performance.


Assuntos
Anti-Infecciosos/uso terapêutico , Infecções Sexualmente Transmissíveis , Feminino , Humanos , Masculino , Educação de Pacientes como Assunto , Infecções Sexualmente Transmissíveis/diagnóstico , Infecções Sexualmente Transmissíveis/tratamento farmacológico , Infecções Sexualmente Transmissíveis/microbiologia , Infecções Sexualmente Transmissíveis/prevenção & controle , Síndrome , Tempo para o Tratamento , Doenças Uretrais , Descarga Vaginal
4.
J Assoc Physicians India ; 67(4): 81-82, 2019 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-31309807

RESUMO

ABSTRACT: Diabetic ketoacidosis is a common acute complication of Diabetes Mellitus. Diabetic ketoacidosis is known to cause impaired consciousness due to the osmolar and acid base imbalance which in turn cause central nervous system involvement. Here we report a rare presentation of Diabetic ketoacidosis with movement disorder in form of hemichorea and facial tics. The movement disorder improved with treatment of ketosis.


Assuntos
Coreia , Cetoacidose Diabética/diagnóstico , Humanos
5.
J Assoc Physicians India ; 67(4): 87-88, 2019 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-31299851

RESUMO

Carbamazepine was and still used extensively in clinical practice in varied indications can cause adverse drug reaction shaving diverse clinical manifestations of variable severity. "Drug Reaction with Eosinophilia and Systemic Symptoms" (DRESS) syndrome is a severe, potentially life-threatening, acute adverse drug reactions, typically characterized by a long latency period from drug exposure. DRESS syndrome is characterized by the presence of fever, coetaneous eruptions, lymphadenopathy, internal organ involvement (such as hepatitis, carditis, interstitial nephritis, interstitial pneumonitis, etc.) and haematological abnormalities, mainly leucocytosis, eosinophilia and sometimes atypical lymphocytosis. We report a clinical case of DRESS syndrome with liver injury, evaluated with the RegiSCAR scoring system as a "definite case" possibly induced by carbamazepine in a patient.


Assuntos
Síndrome de Hipersensibilidade a Medicamentos/diagnóstico , Carbamazepina , Eosinofilia , Exantema , Febre , Humanos
6.
Pediatr Res ; 83(4): 784-790, 2018 04.
Artigo em Inglês | MEDLINE | ID: mdl-29166376

RESUMO

BackgroundBacterial infections account for a significant proportion of neonatal and infant mortality globally. We aimed to identify predictors of death in infants with probable serious bacterial infection (PSBI) defined as signs/symptoms of possible serious bacterial infection along with baseline C-reactive protein (CRP) ≥12 mg/l.MethodsWe did a secondary analysis using the data collected from 700 infants with PSBI who participated in a randomized controlled trial in India in which zinc or placebo was given in addition to the standard antibiotics. Logistic regression was used to estimate the associations between relevant variables and death within 21 days.ResultsThose infants who were fed cow's milk or formula before the illness episode had 3.7-fold (95% confidence interval (CI) 1.5-9.3) and 5.3-fold (95% CI 2.0-13.6) higher odds of death, respectively. Lethargy (odds ratio (OR) 2.4, 95% CI 1.1-5.4) and CRP (OR 1.9, 95% CI 1.1-3.3) were also independent predictors of death. In the model including only clinical features, female gender (OR 2.25, 95% CI 1.0-5.0), abdominal distention (3.7, 95% CI 1.1-12.3), and bulging fontanelle (5.8, 95% CI 1.1-30.5) were also independent predictors for death.ConclusionFormula or cow milk feeding prior to the illness, lethargy at the time of presentation, and high serum CRP levels predicted death in infants with PSBI.


Assuntos
Infecções Bacterianas/mortalidade , Mortalidade Infantil , Sepse/microbiologia , Abdome , Animais , Infecções Bacterianas/epidemiologia , Proteína C-Reativa/análise , Bovinos , Fontanelas Cranianas , Interpretação Estatística de Dados , Feminino , Humanos , Índia/epidemiologia , Lactente , Fórmulas Infantis , Recém-Nascido , Modelos Logísticos , Masculino , Leite/química , Razão de Chances , Controle de Qualidade , Análise de Regressão , Fatores de Risco , Sepse/epidemiologia , Atenção Terciária à Saúde/organização & administração , Zinco/uso terapêutico
7.
Indian J Med Res ; 147(4): 384-390, 2018 04.
Artigo em Inglês | MEDLINE | ID: mdl-29998874

RESUMO

Background & objectives: Vitiligo is an acquired skin disease characterized by depigmented areas of the skin. Increased release of catecholamines from autonomic nerve endings in microenvironment of melanocytes in affected skin might be involved in the aetiopathogenesis of vitiligo. Levels of catecholamines are considered as being related to onset or worsening of the disease. Therefore, in this study, the role of catecholamines was evaluated in mapping disease stability and outcome of vitiligo patients undergoing melanocyte transfer. Methods: In this study, circulatory and urinary levels of catecholamine (CA) and vanillylmandelic acid (VMA) were determined in 45 individuals (30 vitiligo patients and 15 healthy controls) using ELISA. Results: A significant increase for plasma and urinary catecholamines along with VMA was observed as compared to healthy controls. When the pre- and post-intervention levels were analyzed in responders and non-responders, respectively, only dopamine showed significant decline in urine, rest of the molecules in plasma as well as urine showed non-significant decline except VMA which showed insignificant increase. Interpretation & conclusions: Levels of plasma/urinary epinephrine, and plasma dopamine, could not be established as biomarkers for disease stability or successful outcome of autologous melanocyte transfer in generalized vitiligo patients. However, dopamine (urine) might be of help in determining the stability in patients with generalized vitiligo undergoing melanocyte transfer. Further studies need to be done on a large sample of patients to confirm our findings.


Assuntos
Catecolaminas , Ácido Vanilmandélico , Vitiligo , Adulto , Estudos de Casos e Controles , Catecolaminas/sangue , Catecolaminas/urina , Humanos , Índia , Lactação , Estudos Prospectivos , Ácido Vanilmandélico/sangue , Ácido Vanilmandélico/urina , Vitiligo/sangue , Vitiligo/urina
8.
Australas J Dermatol ; 59(1): e1-e5, 2018 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-27282531

RESUMO

BACKGROUND: Many patients with dermatitis over photo-exposed body areas are positive to many contact allergens and have a pre-existing allergic contact dermatitis. METHODS: This study included patients who presented to a tertiary centre in India with dermatitis on photo-exposed body areas suspected of chronic actinic dermatitis. Their detailed histories were recorded and cutaneous and systemic examinations were performed. Patch testing was done in all the patients and photo-patch testing was carried out in 86 patients. RESULTS: Altogether 101 patients were included (69 males, 32 females). The most common presentation was lichenified hyperpigmented plaques on the photo-exposed sites. Photosensitivity was recorded in 64 (63%) patients and summer exacerbation in 52 (52%). Exposure to the Parthenium hysterophorus weed was recorded in 70 (69%) patients, 27 (26.7%) had a history of hair dye application and 20 (20%) had a history of atopy. Photo-patch test was positive in 11 (12.8%) patients and patch testing was positive in 71 (70%). Parthenium hysterophorus was the most common allergen implicated and was positive in three (4%) photo-patch and 52 (52%) patch tests. Other positive photo-patch test allergens were perfume mix, balsam of Peru, thiuram mix, Compositae mix and promethazine hydrochloride. Other common patch test allergens were parthenolide, colophony, fragrance mix and p-phenylenediamine (PPD) base. CONCLUSION: In the Indian population parthenium and perfume mix are the most common photoallergens in patients with dermatitis over photo-exposed areas, while parthenium, colophony, fragrance mix and PPD are the common positive allergens.


Assuntos
Alérgenos/efeitos adversos , Hiperpigmentação/etiologia , Transtornos de Fotossensibilidade/etiologia , Adulto , Idoso , Asteraceae/efeitos adversos , Bálsamos/efeitos adversos , Feminino , Humanos , Hiperpigmentação/patologia , Índia , Masculino , Pessoa de Meia-Idade , Partenogênese , Testes do Emplastro/métodos , Perfumes/efeitos adversos , Transtornos de Fotossensibilidade/patologia , Extratos Vegetais/efeitos adversos , Luz Solar/efeitos adversos , Centros de Atenção Terciária , Tiram/efeitos adversos , Adulto Jovem
9.
Dermatology ; 233(4): 326-332, 2017.
Artigo em Inglês | MEDLINE | ID: mdl-29069641

RESUMO

BACKGROUND: Immunofluorescence (IFM) antigen mapping is the most commonly used technique to diagnose and differentiate epidermolysis bullosa (EB). In India, IFM is limited to few research laboratories and is not readily available, making the diagnosis largely clinical and often inaccurate. Ob jective of the Study: To examine the diagnostic usefulness of immunohistochemistry (IHC) as compared to IFM in resource-limited settings. METHODS: Forty-four consecutive EB patients were included in this study. IHC and IFM were performed on 7-µm frozen tissue sections using standard laboratory protocols with a limited panel of antibodies. The kappa coefficient of agreement was calculated with genetic analysis as the gold standard. RESULTS: IFM and IHC accurately identified the subtype of EB in 80.9% (p < 0.001) of the cases, when a clear blister cavity was evident on biopsy. The sensitivities and specificities of IHC and IFM for diagnosing EB simplex, junctional EB, and dystrophic EB were 100, 100, and 60% and 82.4, 100, and 100%, respectively. IHC was equally effective (p < 0.001) in establishing the type of EB as IFM. CONCLUSIONS: IHC staining and its interpretation were simple and comparable to IFM. IHC had an advantage of showing subtle changes in the epidermal architecture that could not be appreciated on IFM and hence can be considered useful in resource-limited settings.


Assuntos
Epidermólise Bolhosa/diagnóstico , Imuno-Histoquímica/métodos , Pele/patologia , Biomarcadores/análise , Biópsia , Criança , Pré-Escolar , Epidermólise Bolhosa/genética , Epidermólise Bolhosa/metabolismo , Feminino , Testes Genéticos , Humanos , Lactente , Recém-Nascido , Masculino , Curva ROC , Reprodutibilidade dos Testes , Pele/metabolismo
10.
Indian J Med Res ; 146(Supplement): S64-S69, 2017 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-29205198

RESUMO

BACKGROUND & OBJECTIVES: Antimicrobial resistance in Neisseria gonorrhoeae, the causative agent of gonorrhoea, is a subject of worldwide attention. The present study was undertaken to examine the rates of ciprofloxacin resistance, to correlate mutations in gyrA and parC genes with the level of resistance and to look for a variation in mutation pattern, if any, in isolates from across the country. METHODS: A total of 113 isolates of N. gonorrhoeae collected from sexually transmitted infection patients in six centres during November 2010 to October 2013 were investigated. Minimum inhibitory concentration (MIC) determination was done by E-test and results interpreted as per Calibrated Dichotomous Sensitivity criteria. DNA sequence analysis of gyrA and parC genes was done. RESULTS: Of the 113 isolates, only three (2.6%) were susceptible whereas eight (7.07%) were less susceptible, 32 [28.3%, 95% confidence interval (CI): 20.4-37.6%] resistant (MIC 1-3 µg/ml) and 70 (61.9%, 95% CI: 52.2-70.7%) exhibited high-level resistance (HLR) (MIC ≥4 µg/ml) to ciprofloxacin. A S91F substitution in gyrA gene was demonstrated in all ciprofloxacin non-susceptible isolates. All resistant and HLR isolates had a double mutation in gyrA gene. However, only 5.7 per cent of HLR isolates showed double mutations in parC gene. One isolate (MIC 32 µg/ml) had a previously undescribed G85D substitution in the parC gene. INTERPRETATION & CONCLUSIONS: A S91F substitution in gyrA gene was seen in all non-susceptible isolates of N. gonorrhoeae. It may be used as a marker for ciprofloxacin resistance for molecular surveillance approaches to complement the culture-based methods.


Assuntos
DNA Girase/genética , DNA Topoisomerase IV/genética , Gonorreia/genética , Neisseria gonorrhoeae/genética , Ciprofloxacina/administração & dosagem , Ciprofloxacina/efeitos adversos , Farmacorresistência Bacteriana/genética , Gonorreia/epidemiologia , Gonorreia/microbiologia , Humanos , Índia , Mutação , Neisseria gonorrhoeae/efeitos dos fármacos , Neisseria gonorrhoeae/patogenicidade , Quinolonas/administração & dosagem , Quinolonas/efeitos adversos
11.
Adv Exp Med Biol ; 996: 111-122, 2017.
Artigo em Inglês | MEDLINE | ID: mdl-29124695

RESUMO

Skin colour (specifically in relation to its melanin content and composition) has a marked influence on its interaction with ultraviolet light. Eumelanin has mainly photoprotective properties while pheomelanin has the ability to cause formation of reactive oxygen species. This difference is responsible for the difference in incidence and presentation of various idiopathic photodermatoses in dark skinned patients compared to those with lighter skin types. Certain conditions are peculiar to darker skins including pin point popular variant of polymorphous light eruption. These differences are discussed in this chapter while also highlighting the challenges faced in performing phototesting in patients with dark skin.


Assuntos
Melaninas/metabolismo , Transtornos de Fotossensibilidade/etiologia , Pigmentação da Pele/efeitos da radiação , Pele/efeitos da radiação , Raios Ultravioleta/efeitos adversos , Adulto , Criança , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Estresse Oxidativo/efeitos da radiação , Transtornos de Fotossensibilidade/diagnóstico , Transtornos de Fotossensibilidade/metabolismo , Transtornos de Fotossensibilidade/fisiopatologia , Valor Preditivo dos Testes , Prognóstico , Espécies Reativas de Oxigênio/metabolismo , Fatores de Risco , Pele/metabolismo , Pele/patologia
12.
Sex Transm Dis ; 43(8): 506-16, 2016 08.
Artigo em Inglês | MEDLINE | ID: mdl-27414684

RESUMO

Molecular epidemiology of 100 consecutive gonococcal isolates collected between April 2010 and October 2013 from New Delhi was investigated using Neisseria gonorrhoeae multiantigen sequence typing (NG-MAST) along with its association with antimicrobial resistance profiles. Neisseria gonorrhoeae isolates were assigned into 60 different sequence types and 43 (71.6%) were novel. Sole representation was seen in 76.6% sequence types. There was significant association between ST6058 and resistance to penicillin (P = 0.00) and tetracycline (P = 0.002).


Assuntos
Antibacterianos/farmacologia , Gonorreia/epidemiologia , Neisseria gonorrhoeae/classificação , Adolescente , Adulto , Técnicas de Tipagem Bacteriana , Feminino , Gonorreia/tratamento farmacológico , Gonorreia/microbiologia , Humanos , Índia/epidemiologia , Masculino , Pessoa de Meia-Idade , Epidemiologia Molecular , Tipagem de Sequências Multilocus , Neisseria gonorrhoeae/efeitos dos fármacos , Neisseria gonorrhoeae/genética , Penicilinas/farmacologia , Análise de Sequência de DNA , Tetraciclina/farmacologia , Adulto Jovem
13.
Chin J Traumatol ; 18(3): 170-4, 2015.
Artigo em Inglês | MEDLINE | ID: mdl-26643245

RESUMO

Upper limb length discrepancy is a rare occurrence. Humerus shortening may need specialized treatment to restore the functional and cosmetic status of upper limb. We report a case of humerus lengthening of 9 cm with a monorail external fixator and the result was observed during a 2-year follow-up. Humerus lengthening needs specialized focus as it is not only a cosmetic issue but also a functional demand. The monorail unilateral fixator is more functional and cosmetically acceptable, and thus becomes an effective treatment option.


Assuntos
Alongamento Ósseo/instrumentação , Fixadores Externos , Úmero/cirurgia , Cirurgia Plástica/instrumentação , Adulto , Feminino , Humanos , Úmero/fisiologia , Amplitude de Movimento Articular
14.
Indian J Med Res ; 140(5): 649-52, 2014 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-25579147

RESUMO

BACKGROUND & OBJECTIVES: Gonorrhoea is among the most frequent of the estimated bacterial sexually transmitted infections (STIs) and has significant health implications in women. The use of nucleic acid amplification tests (NAATs) has been shown to provide enhanced diagnosis of gonorrhoea in female patients. However, it is recommended that an on-going assessment of the test assays should be performed to check for any probable sequence variation occurring in the targeted region. In this study, an in-house PCR targeting opa-gene of Neisseria gonorrhoeae was used in conjunction with 16S ribosomal PCR to determine the presence of gonorrhoea in female patients attending the tertiary care hospitals. METHODS: Endocervical samples collected from 250 female patients with complaints of vaginal or cervical discharge or pain in lower abdomen were tested using opa and 16S ribosomal assay. The samples were also processed by conventional methods. RESULTS: Of the 250 female patients included in the study, only one was positive by conventional methods (microscopy and culture) whereas 17 patients were found to be positive based on PCR results. INTERPRETATION & CONCLUSIONS: The clinical sensitivity of conventional methods for the detection of N. gonorrhoeae in female patients was low. The gonococcal detection rates increased when molecular method was used giving 16 additional positives. Studies should be done to find out other gene targets that may be used in the screening assays to detect the presence of gonorrhoea.


Assuntos
Gonorreia/diagnóstico , Gonorreia/genética , Neisseria gonorrhoeae/isolamento & purificação , Técnicas de Amplificação de Ácido Nucleico , Proteínas da Membrana Bacteriana Externa , Feminino , Gonorreia/microbiologia , Humanos , Índia , Neisseria gonorrhoeae/genética , RNA Ribossômico 16S/genética , Centros de Atenção Terciária , Vagina/microbiologia , Vagina/patologia
15.
Chin J Traumatol ; 17(4): 239-41, 2014.
Artigo em Inglês | MEDLINE | ID: mdl-25098853

RESUMO

Difficult femoral nonunion takes account of infective nonunion and aseptic gap nonunion. Limb length discrepancy and nonunion need to be tackled simultaneously. Conventionally Ilizarov ring fixator is in vogue but it has some limitations. To overcome these, monorail fixator is an effective alternative. Persistent good results can be obtained if we can get a perfect anatomical alignment and good regeneration.


Assuntos
Fixadores Externos , Fraturas do Fêmur/cirurgia , Fixação de Fratura/instrumentação , Fraturas não Consolidadas/cirurgia , Humanos , Técnica de Ilizarov
16.
Chin J Traumatol ; 17(3): 175-7, 2014.
Artigo em Inglês | MEDLINE | ID: mdl-24889983

RESUMO

Neurapraxia frequently occurs following traction injury to the nerve intraoperatively, leading to radial nerve palsy which usually recovers in 5-30 weeks. In our case, we had operated a distal one-third of humeral shaft fracture and fixed it with 4.5 mm limited contact dynamic compression plate. The distal neurovascular status of the limb was assessed postoperatively in the recovery room and was found to be intact and all the sensory-motor functions of the radial nerve were normal. On the second postoperative day, following the suction drain removal and dressing, patient developed immediate radial nerve palsy along with wrist drop. We reviewed the literature and found no obvious cause for the nerve palsy and concluded that it was due to traction injury to the radial nerve while removing the suction drain in negative pressure.


Assuntos
Neuropatia Radial/etiologia , Adulto , Feminino , Humanos , Fraturas do Úmero/cirurgia , Complicações Pós-Operatórias
17.
Plants (Basel) ; 13(12)2024 Jun 14.
Artigo em Inglês | MEDLINE | ID: mdl-38931079

RESUMO

In tropical countries, combating leaf curl disease in hot peppers has become important in improvement programs. Leaf curl disease is caused by whitefly (Bemisia tabaci) transmitted begomoviruses, which mainly include chilli leaf curl virus (ChiLCV). However, multiple begomoviruses have also been found to be associated with this disease. The Capsicum annuum line, DLS-Sel-10, was found to be a tolerant source against this disease during field screening. In this study, we characterized the resistance of DLS-sel-10 against chilli leaf curl virus (ChiLCV) in comparison to the susceptible cultivar Phule Mukta (PM), focusing on the level, stage, and nature of resistance. Comprehensive investigations involved screening of DLS-Sel-10 against the whitefly vector ChiLCV. The putative tolerant line displayed reduced virus infection at the seedling stage, with increasing resistance during vegetative, flowering, and fruiting stages. Both DLS-Sel-10 and PM could be infected with ChiLCV, although DLS-Sel-10 remained symptomless. Insect feeding assays revealed DLS-Sel-10 as a less preferred host for whiteflies compared to PM. In conclusion, DLS-Sel-10 demonstrated tolerance not only to ChiLCV but also served as an unfavorable host for the whitefly vector. The study highlighted an age-dependent increase in tolerance within DLS-Sel-10, showcasing its potential for effective leaf curl disease management in chilli.

19.
Front Plant Sci ; 15: 1398083, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-38962246

RESUMO

Utilizing agricultural and industrial wastes, potent reservoirs of nutrients, for nourishing the soil and crops through composting embodies a sustainable approach to waste management and organic agriculture. To investigate this, a 2-year field experiment was conducted at ICAR-IARI, New Delhi, focusing on a pigeon pea-vegetable mustard-okra cropping system. Seven nutrient sources were tested, including a control (T1), 100% recommended dose of nitrogen (RDN) through farmyard manure (T2), 100% RDN through improved rice residue compost (T3), 100% RDN through a paddy husk ash (PHA)-based formulation (T4), 75% RDN through PHA-based formulation (T5), 100% RDN through a potato peel compost (PPC)-based formulation (T6), and 75% RDN through PPC-based formulation (T7). Employing a randomized block design with three replications, the results revealed that treatment T4 exhibited the significantly highest seed (1.89 ± 0.09 and 1.97 ± 0.12 t ha-1) and stover (7.83 ± 0.41 and 8.03 ± 0.58 t ha-1) yield of pigeon pea, leaf yield (81.57 ± 4.69 and 82.97 ± 4.17 t ha-1) of vegetable mustard, and fruit (13.54 ± 0.82 and 13.78 ± 0.81 t ha-1) and stover (21.64 ± 1.31 and 22.03 ± 1.30 t ha-1) yield of okra during both study years compared to the control (T1). Treatment T4 was on par with T2 and T6 for seed and stover yield in pigeon pea, as well as okra, and leaf yield in vegetable mustard over both years. Moreover, T4 demonstrated notable increase of 124.1% and 158.2% in NH4-N and NO3-N levels in the soil, respectively, over the control. The enhanced status of available nitrogen (N) and phosphorus (P) in the soil, coupled with increased soil organic carbon (0.41%), total bacteria population (21.1%), fungi (37.2%), actinomycetes (44.6%), and microbial biomass carbon (28.5%), further emphasized the positive impact of T4 compared to the control. Treatments T2 and T6 exhibited comparable outcomes to T4 concerning changes in available N, P, soil organic carbon, total bacteria population, fungi, actinomycetes, and microbial biomass carbon. In conclusion, treatments T4 and T6 emerge as viable sources of organic fertilizer, particularly in regions confronting farmyard manure shortages. These formulations offer substantial advantages, including enhanced yield, soil quality improvement, and efficient fertilizer utilization, thus contributing significantly to sustainable agricultural practices.

20.
Lancet ; 379(9831): 2072-8, 2012 Jun 02.
Artigo em Inglês | MEDLINE | ID: mdl-22656335

RESUMO

BACKGROUND: Serious bacterial infections are a major cause of death in early infancy in developing countries. Inexpensive and accessible interventions that can add to the effect of standard antibiotic treatment could reduce infant mortality. We measured the effect of zinc as an adjunct to antibiotics in infants with probable serious bacterial infection. METHODS: In this randomised, double-blind, placebo-controlled trial, we enrolled infants aged 7-120 days with probable serious bacterial infection at three hospitals in New Delhi, India, between July 6, 2005, and Dec 3, 2008. With computer-generated sequences, we randomly assigned infants in permuted blocks of six, stratified by whether patients were underweight or had diarrhoea at enrolment, to receive either 10 mg of zinc or placebo orally every day in addition to standard antibiotic treatment. The primary outcome was treatment failure, which was defined as a need to change antibiotics within 7 days of randomisation, or a need for intensive care, or death at any time within 21 days. Participants and investigators were masked to treatment allocation. All analyses were done by intention-to-treat. This trial is registered with ClinicalTrials.gov, number NCT00347386. FINDINGS: 352 infants were randomly assigned to receive zinc and 348 to placebo. 332 given zinc and 323 given placebo could be assessed for treatment failure. Significantly fewer treatment failures occurred in the zinc group (34 [10%]) than in the placebo group (55 [17%]; relative risk reduction 40%, 95% CI 10-60, p=0·0113; absolute risk reduction 6·8%, 1·5-12·0, p=0·0111). Treatment of 15 (95% CI eight to 67) infants with zinc would prevent one treatment failure. Ten infants receiving zinc died compared with 17 given placebo (relative risk 0·57, 0·27-1·23, p=0·15). INTERPRETATION: Zinc could be given as adjunct treatment to reduce the risk of treatment failure in infants aged 7-120 days with probable serious bacterial infection. FUNDING: Department of Biotechnology, Government of India; the European Commission; the Meltzer Foundation; and the Research Council of Norway.


Assuntos
Infecções Bacterianas/tratamento farmacológico , Zinco/uso terapêutico , Administração Oral , Antibacterianos/uso terapêutico , Infecções Bacterianas/complicações , Infecções Bacterianas/diagnóstico , Peso Corporal , Diarreia Infantil/tratamento farmacológico , Diarreia Infantil/microbiologia , Método Duplo-Cego , Quimioterapia Combinada , Feminino , Humanos , Lactente , Recém-Nascido , Masculino , Oligoelementos/administração & dosagem , Oligoelementos/uso terapêutico , Falha de Tratamento , Aumento de Peso/efeitos dos fármacos , Zinco/administração & dosagem
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