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1.
J Pediatr Genet ; 13(2): 158-165, 2024 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-38721578

RESUMO

Transient receptor potential vanilloid 4 channel ( TRPV4 ) gene mutations have been described in skeletal system and peripheral nervous system pathology. The case described here is a 9-year-old male child patient, born to a nonconsanguineous marriage with normal birth history who had difficulty in walking and stiffness of joints for the last 7 years, and progressive weakness of all four limbs and urine incontinence for 1 year following falls. Physical examination showed below-average weight and height and short trunk. Musculoskeletal examination revealed bony prominence bilaterally in the knee joints and contractures in knee and elbow joints with brachydactyly; muscle tone was increased, with brisk deep tendon reflexes. Skeletal survey showed platyspondyly with anterior beaking with metaphyseal dysplasia. Magnetic resonance imaging of the spine revealed atlantoaxial instability with hyperintense signal changes at a cervicomedullary junction and upper cervical cord with thinning and spinal canal stenosis suggestive of compressive myelopathy with platyspondyly and anterior beaking of the spine at cervical, thoracic and lumbar vertebrae. Exome sequencing revealed a heterozygous de novo variant c.2389G > A in exon 15 of TRPV4 , which results in the amino acid substitution p.Glu797Lys in the encoded protein. The characteristics observed indicated spondylometaphyseal dysplasia, Kozlowski type (SMD-K). The child underwent surgical intervention for compressive myelopathy by reduction of atlantoaxial dislocation with C1 lateral mass and C2 pars fusion using rib graft and fixation using screws and rods. To conclude, for any child presenting with progressive kyphoscoliosis, short stature, platyspondyly, and metaphyseal changes, a diagnosis of SMD-K should be considered and the patient and family should be advised to avoid spinal injuries.

2.
Int Ophthalmol ; 44(1): 205, 2024 Apr 27.
Artigo em Inglês | MEDLINE | ID: mdl-38676784

RESUMO

PURPOSE: Microbial keratitis is a sight-threatening condition with a higher incidence in agrarian populations. In countries with a high indigent population, due to financial and other constraints, patients prefer to seek therapy locally rather than travel to advanced centres. The aim of this study is to describe the epidemiology, clinical characteristics, and outcomes of 60 consecutive patients with microbial keratitis managed at a rural centre. METHODS: Descriptive case series. All patients clinically diagnosed with infectious keratitis were included. Corneal scrapings were obtained and microbiological identification was done by Gram stain. Anti-microbial therapy was commenced based on smear findings and the patients were followed up till disease resolution. RESULTS: Sixty eyes of 60 patients were diagnosed with microbial keratitis in the study period. The mean age was 47.43 ± 18.69 years. Male:female ratio was 47:53. Risk factors included ocular trauma in the majority of patients (46/60; 76.7%). Microorganisms were identified on 75.6% of smears, with fungal filaments (65.4%) being the most common. Ulcers were central in over half (32/60; 53.3%), and > 3 mm in diameter in over three-fourths (81.6%) of patients. Forty-four patients (73.3%) achieved treatment success whereas 16/60 (26.6%) required referral to our tertiary-eye care facility for management. The median time to resolution was 14 days (IQR 10-26 days). CONCLUSION: Our series demonstrates the feasibility of microbiology-guided therapy in microbial keratitis by ophthalmologists at the secondary rural eye-care level. Two-thirds of the patients could be successfully managed at the rural centre and only severe cases needed a referral to tertiary centres.


Assuntos
Infecções Oculares Bacterianas , População Rural , Humanos , Masculino , Feminino , Pessoa de Meia-Idade , Adulto , Infecções Oculares Bacterianas/epidemiologia , Infecções Oculares Bacterianas/microbiologia , Infecções Oculares Bacterianas/diagnóstico , Infecções Oculares Bacterianas/terapia , Idoso , Índia/epidemiologia , População Rural/estatística & dados numéricos , Ceratite/epidemiologia , Ceratite/microbiologia , Ceratite/diagnóstico , Adulto Jovem , Antibacterianos/uso terapêutico , Adolescente , Úlcera da Córnea/microbiologia , Úlcera da Córnea/epidemiologia , Úlcera da Córnea/diagnóstico , Úlcera da Córnea/tratamento farmacológico , Úlcera da Córnea/terapia , Incidência , Infecções Oculares Fúngicas/epidemiologia , Infecções Oculares Fúngicas/microbiologia , Infecções Oculares Fúngicas/diagnóstico , Infecções Oculares Fúngicas/terapia , Infecções Oculares Fúngicas/tratamento farmacológico , Fatores de Risco , Bactérias/isolamento & purificação
3.
Semin Ophthalmol ; : 1-11, 2024 Apr 20.
Artigo em Inglês | MEDLINE | ID: mdl-38643349

RESUMO

BACKGROUND: Diabetic eye disease is a highly prevalent and sight-threatening disorder. It is a disease of neuro-vascular unit of the retina, if left untreated can cause blindness. Therapeutic approaches followed for its treatment can only restrict the progression of the disease with highly variable results. There is no known biomarker for an early diagonsis of this disease, therefore by the time it is detected it goes beyond repair. This creates a massive demand for development of such biomarkers that help detect disease in its earlier stages. METHODS: PUBMED (https://pubmed.ncbi.nlm.nih.gov/) was searched for articles relevant to the topic published till November 2023. The search was made using keywords such as Diabetic Retinopathy, inflammation, tear, biomarker, proteomics etc. The studies providing relevant information to prove the importance of biomarker discovery were chosen. After compiling the data, the manuscript writing was planned under relevant headings and sub-headings. RESULTS: The review provides a comprehensive overview of all the tear protein biomarker studies in the field of DR and DME. Briefly, their potential in other diseases is also elucidated. While there are many studies pertaining to DR biomarkers, the identified markers lack validations which has restricted their usage in clinics. In case of DME, there was no such study towards biomarker discovery for its diagnosis and prognosis. CONCLUSIONS: The review highlights major studies and their lacunae in the field of biomarkers discovery for DR and DME.

4.
Ophthalmic Epidemiol ; : 1-11, 2024 Apr 18.
Artigo em Inglês | MEDLINE | ID: mdl-38635874

RESUMO

PURPOSE: Post-operative vision impairment is common among patients who have undergone cataract surgery in low-resource settings, impacting quality of clinical outcomes and patient experience. This prospective, multisite, single-armed, pragmatic validation study aimed to assess whether receiving tailored recommendations via the free Better Operative Outcomes Software Tool (BOOST) app improved surgical outcomes, as quantified by post-operative unaided distance visual acuity (UVA) measured 1-3 days after surgery. METHODS: During the baseline data collection round, surgeons in low and middle-income countries recorded clinical characteristics of 60 consecutive cataract cases in BOOST. Additional data on the causes of poor outcomes from 20 consecutive cases with post-operative UVA of <6/60 (4-12 weeks post-surgery) were entered to automatically generate tailored recommendations for improvement, before 60 additional consecutive cases were recorded during the follow-up study round. Average UVA was compared between cases recorded in the baseline study round and those recorded during follow-up. RESULTS: Among 4,233 cataract surgeries performed by 41 surgeons in 18 countries, only 2,002 (47.3%) had post-operative UVA 6/12 or better. Among the 14 surgeons (34.1%) who completed both rounds of the study (1,680 cases total), there was no clinically significant improvement in post-operative average UVA (logMAR units ±SD) between baseline (0.50 ± 0.37) and follow-up (0.47 ± 0.36) rounds (mean improvement 0.03, p = 0.486). CONCLUSIONS: Receiving BOOST-generated recommendations did not result in improved UVA beyond what could be expected from prospective monitoring of surgical outcomes alone. Additional research is required to assess whether targeted support to implement changes could potentiate the uptake of app-generated recommendations and improve outcomes.

5.
J Indian Assoc Pediatr Surg ; 29(2): 168-170, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-38616842

RESUMO

Cervicofacial rhabdomyosarcoma (RMS) presents surgical complexities in children due to its aggressive nature. This study presents a successful case of oral RMS treatment with a free fibular graft in a 7-year-old patient. Despite follow-up challenges, the efficacy of the approach is evident.

6.
Pediatr Cardiol ; 2024 Mar 01.
Artigo em Inglês | MEDLINE | ID: mdl-38427089

RESUMO

Patients with Fontan circulation insidiously develop congestive hepatopathy related to chronically reduced cardiac output and central venous hypertension, also known as Fontan-associated liver disease (FALD). Fontan pathway obstruction is increasingly detected and may accelerate FALD. The impact of conduit stent angioplasty on FALD is unknown. Retrospective, single-center review of patients with Fontan circulation who underwent conduit stent angioplasty at cardiac catheterization over 5-year period. Demographics and cardiac histories were reviewed. Labs, liver ultrasound elastography, echocardiogram, hemodynamic and angiographic data at catheterization were recorded pre- and post-stent angioplasty. Primary outcome was change in hepatic function via MELD-XI scores and liver stiffness (kPa), with secondary outcomes of ventricular function, BNP, and repeat catheterization hemodynamics. 33 patients underwent Fontan conduit stent angioplasty, 19.3 ± 7.0 years from Fontan operation. Original conduit diameter was 19.1 ± 1.9 mm. Prior to angioplasty, conduit size was reduced to a cross-sectional area 132 (91, 173) mm2 and increased to 314 (255, 363) mm2 post-stent. Subjects' baseline median MELD-XI of 11 (9, 12) increased to 12 (9, 13) at 19 ± 15.5 months post-angioplasty (n = 22, p = 0.053). There was no significant change in liver stiffness at 12.1 ± 8.9 months post-angioplasty (n = 15, p = 0.13). Median total bilirubin significantly increased (1.4 [0.9, 1.8]), from baseline 1.1 [0.7, 1.5], p = 0.04), as did median BNP (41 [0, 148] from baseline 34 [15, 79]; p = 0.02). There were no significant changes in ventricular function or repeat invasive hemodynamics (n = 8 subjects). Mid-term follow-up of Fontan subjects post-conduit stent angioplasty did not show improvements in non-invasive markers of FALD.

7.
Indian Dermatol Online J ; 15(1): 39-44, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-38282989

RESUMO

Background: Sexually transmitted infections (STIs) are one of the major public health problems in India with adolescents being a vulnerable section of the affected population. According to the World Health Organization (WHO), one in twenty adolescents contracts an STI every year, excluding the human immunodeficiency virus (HIV) and other viral infections. It is important to assess the knowledge, attitude, and practices related to STIs among adolescents and young adults of non-medical backgrounds to educate them properly about protective and preventive measures and to allay misconceptions, if any. Materials and Methods: This is a cross-sectional study involving 507 engineering students who were asked to fill out the predesigned anonymous questionnaire form. Results were statistically analyzed and tabulated. Results: Of the 507 students, 375 were males and 132 were females. The mean age of the patients was 20.5 years. HIV was the most commonly identified STI (94.2%), followed by herpes genitalis (76.5%). Around 97.4% and 85.7% identified the sexual route and blood transfusion as the modes of transmission of STIs, respectively. A total of 90.9% said that the Internet was their primary source of information regarding STIs. Infertility and cancer were identified as complications by 59.5% and 25% of them, respectively. Only 23.4% were aware of the National STI Control Program. The results with respect to attitudes and practices related to STIs were variable. Conclusion: Our study reflects that with change in time, the attitude of young adults toward sexuality is becoming very casual, but knowledge remains low. A lot of educational activities should be undertaken to educate our youth about various aspects of STIs and thus reduce the burden of the disease in the community.

8.
Eye (Lond) ; 2024 Jan 22.
Artigo em Inglês | MEDLINE | ID: mdl-38253864

RESUMO

OBJECTIVE: To evaluate the environmental and economic impact of teleophthalmological services provided by a primary (rural) and tertiary (urban) eyecare network in India. METHODS: This prospective study utilised a random sampling method, and administered an environmental and economic impact assessment questionnaire. The study included 324 (primary: 173; tertiary: 151) patients who received teleconsultations from July to September 2022. The primary network (rural) used a colour-coded triage system (Green: eye conditions managed by teleconsult alone; yellow: semi-urgent referral within 1 week to a month, red: urgent referral within a day to a week). The tertiary network (urban) included new and follow-up patients. The environmental impact was assessed by estimating the potential CO2 emissions saved by avoiding travel for various transport modes. Economic impact measured by the potential cost savings from direct (travel) and indirect (food and wages lost) expenses spent by yellow and red referrals (primary) and the first-visit expenses of follow-up (tertiary) patients. RESULTS: The primary rural network saved 2.89 kg CO2/person and 80 km/person. The tertiary urban network saved 176.6 kg CO2/person and 1666 km/person. The potential cost savings on travel expenses were INR 19,970 (USD 250) for the primary (average: INR 370 (USD 4.6) per patient) and INR 758,870 (USD 9486) for the tertiary network (average: INR 8339 (USD 104) per patient). Indirect cost savings (food and wages) were of INR 29,100 (USD 364) for the primary and INR 347,800 (USD 4347) for the tertiary network. CONCLUSION: Teleophthalmology offers substantial environmental and economic benefits in rural and urban eyecare systems.

9.
Indian J Ophthalmol ; 72(2): 195-200, 2024 Feb 01.
Artigo em Inglês | MEDLINE | ID: mdl-38099387

RESUMO

PURPOSE: This study aimed to report the strategies that evolved in managing Mooren's ulcer (MU) at a resource-limited center in rural India during the coronavirus disease 2019 (COVID-19) pandemic. METHODS: This study includes a retrospective analysis of clinically diagnosed MU cases from January 2021 to August 2021 wherein strategies for management were developed. The demographic profile, ulcer clinical features, treatment algorithms (medical and surgical), complications encountered, referral to a higher center, and compliance with medication and follow-up were studied. RESULTS: The mean age of presentation was 68.1 years (range, 62-73 years), and 90% were men. The median best-corrected visual acuity (BCVA) was 1.26 logarithm of the Minimum Angle of Resolution (LogMAR) (interquartile range (IQR), 0.00-5 logMAR) in the affected eye on presentation, which improved to 0.69 logMAR (IQR, 0.00-3 logMAR) at resolution ( P = 0.442). The first-line management was conjunctival resection and tissue adhesive application (90%). 70% of cases were unilateral, 50% of cases had less than 2 clock hours of involvement, and 50% had less than 50% stromal involvement. Confounding factors included infectious keratitis (2) and corneal perforation (3). The mean duration of follow-up was 96 (1-240) days. The average follow-up visits per patient were 8.8 (1-22). 90% of cases could be managed successfully at the secondary center level with two cases needing a tertiary care referral. CONCLUSION: MU can be managed effectively by following a systemic strategy of early diagnosis, surgical therapy, and rapid institution of systemic immunosuppression in a remote location-based secondary center. The strategies developed can be a guide for ophthalmologists at remote centers managing patients or who are unable to travel to tertiary institutes.


Assuntos
COVID-19 , Úlcera da Córnea , Masculino , Humanos , Pessoa de Meia-Idade , Idoso , Feminino , Pandemias , Estudos Retrospectivos , Úlcera , COVID-19/epidemiologia , Úlcera da Córnea/diagnóstico , Úlcera da Córnea/epidemiologia , Úlcera da Córnea/terapia
10.
J Biol Chem ; 299(6): 104729, 2023 06.
Artigo em Inglês | MEDLINE | ID: mdl-37080391

RESUMO

The macrophage migration inhibitory factor (MIF) protein family consists of MIF and D-dopachrome tautomerase (also known as MIF-2). These homologs share 34% sequence identity while maintaining nearly indistinguishable tertiary and quaternary structure, which is likely a major contributor to their overlapping functions, including the binding and activation of the cluster of differentiation 74 (CD74) receptor to mediate inflammation. Previously, we investigated a novel allosteric site, Tyr99, that modulated N-terminal catalytic activity in MIF through a "pathway" of dynamically coupled residues. In a comparative study, we revealed an analogous allosteric pathway in MIF-2 despite its unique primary sequence. Disruptions of the MIF and MIF-2 N termini also diminished CD74 activation at the C terminus, though the receptor activation site is not fully defined in MIF-2. In this study, we use site-directed mutagenesis, NMR spectroscopy, molecular simulations, in vitro and in vivo biochemistry to explore the putative CD74 activation region of MIF-2 based on homology to MIF. We also confirm its reciprocal structural coupling to the MIF-2 allosteric site and N-terminal enzymatic site. Thus, we provide further insight into the CD74 activation site of MIF-2 and its allosteric coupling for immunoregulation.


Assuntos
Fatores Inibidores da Migração de Macrófagos , Humanos , Fatores Inibidores da Migração de Macrófagos/metabolismo , Sítios de Ligação , Inflamação , Antígenos de Diferenciação de Linfócitos B/metabolismo , Antígenos de Histocompatibilidade Classe II/metabolismo
11.
Sultan Qaboos Univ Med J ; 23(1): 109-112, 2023 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-36865420

RESUMO

Scrub typhus is a disease endemic to the Indian subcontinent caused by the obligate intracellular pleomorphic organism, Orientia tsutsugamushi. Scrub typhus, among other acute febrile illnesses, manifests as prodromal symptoms of fever, malaise, myalgia and anorexia followed by a distinct maculopapular rash, hepatosplenomegaly and lymphadenopathy. We report the case of a patient presenting to tertiary care hospital in southern India in 2021 who developed a rare cutaneous vasculitis secondary to infection with Orientia tsutsugamushi. After performing the Weil-Felix test, a diagnostic titre of >1:640 against OXK was obtained. Furthermore, a skin biopsy was carried out which confirmed the diagnosis of leukocytoclastic vasculitis. The patient was treated with doxycycline and showed drastic improvement in his symptoms.


Assuntos
Tifo por Ácaros , Vasculite Leucocitoclástica Cutânea , Humanos , Tifo por Ácaros/complicações , Tifo por Ácaros/diagnóstico , Vasculite Leucocitoclástica Cutânea/diagnóstico , Vasculite Leucocitoclástica Cutânea/etiologia , Biópsia , Doxiciclina/uso terapêutico , Febre
13.
Chempluschem ; 88(3): e202200420, 2023 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-36795938

RESUMO

Bimetallic metal organic frameworks (BMOFs) are a class of crystalline solids and their structure comprises two metal ions in the lattice. BMOFs show a synergistic effect of two metal centres and enhanced properties compared to MOFs. By controlling the composition and relative distribution of two metal ions in the lattice the structure, morphology, and topology of BMOFs could be regulated resulting in an improvement in the tunability of pore structure, activity, and selectivity. Thus, developing BMOFs and BMOF incorporated membranes for applications such as adsorption, separation, catalysis, and sensing is a promising strategy to mitigate environmental pollution and address the looming energy crisis. Herein we present an overview of recent advancements in the area of BMOFs and a comprehensive review of BMOF incorporated membranes reported to date. The scope, challenges as well as future perspectives for BMOFs and BMOF incorporated membranes are presented.

14.
Environ Res ; 216(Pt 4): 114756, 2023 01 01.
Artigo em Inglês | MEDLINE | ID: mdl-36372148

RESUMO

Ecosystems are becoming more and more polluted, hence sustainable techniques of pollution removal are needed. In the recent times, exceedingly pure water has become ideal for several industries. Modern industry needs ultra-pure water, which is highly processed water that is devoid of colloidal particles and has a conductivity of less than 0.06 µS. A very effective method for removing ionic chemicals from polluted waters emerged recently called electrodeionization. Continuous electrodeionization (CEDI) is a technique for producing high-purity water. Besides rendering purified water, the technique has got promising wastewater treatment technologies - by facilitating the eradication of ionizable compounds, hazardous chemicals, radioactive pollutants, heavy metals and other potential contaminants. Innovative materials have been developed in order to advance and improve this technique, which would result in enormous ecological and financial benefit on a worldwide scale. In this review article, several factors that affect the performance of CEDI has been comprehended, with the impact of Ion-exchange resins and membranes as the focal point.


Assuntos
Metais Pesados , Poluentes Químicos da Água , Purificação da Água , Ecossistema , Purificação da Água/métodos , Poluentes Químicos da Água/análise , Água , Águas Residuárias
15.
Cornea ; 42(8): 946-953, 2023 Aug 01.
Artigo em Inglês | MEDLINE | ID: mdl-35965400

RESUMO

PURPOSE: The aim of this study was to evaluate the risk factors, microbiology, and treatment outcomes of polymicrobial keratitis (PMK). METHODS: We retrospectively analyzed 65 patients diagnosed with PMK between 2016 and 2019. The clinical and microbiological characteristics and outcomes were evaluated. The primary outcome measure was clinical resolution of keratitis. Absolute success (group A) was defined as resolution of infection with medical treatment, qualified success (group B) was resolution with medical therapy and additional minor procedures, and failure (group C) was defined as worsening of infection and presence of corneal melting or perforation requiring therapeutic penetrating keratoplasty or evisceration. RESULTS: Of 4764 cases of microbial keratitis, PMK was identified in 65 eyes of 65 patients (1.36%). Infiltrate was central in 60% (39 eyes). Predisposing factors were higher in group C and included uncontrolled diabetes mellitus in 25% (7/28), history of trauma/foreign body in 57.1% (16/28), and poor presenting visual acuity (0.9 for group A vs. 1.79 for group B vs. 3.00 logarithm of the minimum angle of resolution for group C; P = 0.02). Microbiological profiling revealed that a majority (95%: 62/65) had bacterial with fungal keratitis. High fluoroquinolone resistance was noted (57%; 34/59). Absolute success was achieved in 28.3% (17/60), qualified success in 16.6% (10/60), and treatment failure was noted in 55% (33/60). The final best corrected visual acuity in group A was significantly better than that in group B and C (0.44 vs. 3.00 vs. 2.78; P < 0.001). CONCLUSIONS: PMK is extremely rare but responds poorly to medical therapy. Bacterial with fungal etiology is predominant. Early surgical intervention to improve overall outcome is advocated.


Assuntos
Úlcera da Córnea , Infecções Oculares Bacterianas , Infecções Oculares Fúngicas , Ceratite , Humanos , Estudos Retrospectivos , Infecções Oculares Bacterianas/diagnóstico , Infecções Oculares Bacterianas/tratamento farmacológico , Ceratite/diagnóstico , Ceratite/tratamento farmacológico , Ceratite/microbiologia , Úlcera da Córnea/diagnóstico , Úlcera da Córnea/tratamento farmacológico , Bactérias , Ceratoplastia Penetrante , Resultado do Tratamento , Infecções Oculares Fúngicas/diagnóstico , Infecções Oculares Fúngicas/tratamento farmacológico , Infecções Oculares Fúngicas/microbiologia
16.
Artigo em Inglês | MEDLINE | ID: mdl-36092742

RESUMO

Background: In low-and-middle income countries, corneal abrasions and ulcers are common and not always well managed. Previous studies showed better clinical outcomes with early presentation and treatment of minor abrasions, however, there have been no formal studies estimating the financial impact of early treatment of abrasions and ulcers compared to delayed treatment. Methods: We used the LV Prasad Eye Institute's (LVPEI's) electronic health record system (eyeSmart) to estimate the impact of early presentation on clinical outcomes associated with abrasions and ulcers. 861 patients with corneal abrasion and 1821 patients with corneal ulcers were studied retrospectively, and 134 patients with corneal abrasion prospectively. A health economic model was constructed based on LVPEI cost data for a range of patient scenarios (from early presentation with abrasion to late presentation with ulcer). Findings: Our findings suggest that delayed presentation of corneal abrasion results in poor clinical and economic outcomes due to increased risk of ulceration requiring more extensive surgical management, increasing associated costs to patients and the healthcare system. However, excellent results at low cost can be achieved by treatment of patients with early presentation of abrasions at village level health care centres. Interpretation: Treatment of early minor corneal abrasions, particularly using local delivery of treatment, is effective clinically and economically. Future investment in making patients aware of the need to react promptly to corneal abrasions by accessing local healthcare resources (coupled with a campaign to prevent ulcerations occurring) will continue to improve clinical outcomes for patients at low cost and avoid complex and more expensive treatment to preserve sight. Funding: This research was funded by the Medical Research Council, grant MR/S004688/1.

17.
Innov Syst Softw Eng ; : 1-12, 2022 Jul 25.
Artigo em Inglês | MEDLINE | ID: mdl-35910813

RESUMO

E-commerce platforms have been around for over two decades now, and their popularity among buyers and sellers alike has been increasing. With the COVID-19 pandemic, there has been a boom in online shopping, with many sellers moving their businesses towards e-commerce platforms. Product pricing is quite difficult at this increased scale of online shopping, considering the number of products being sold online. For instance, the strong seasonal pricing trends in clothes-where Brand names seem to sway the prices heavily. Electronics, on the other hand, have product specification-based pricing, which keeps fluctuating. This work aims to help business owners price their products competitively based on similar products being sold on e-commerce platforms based on the reviews, statistical and categorical features. A hybrid algorithm X-NGBoost combining extreme gradient boost (XGBoost) with natural gradient boost (NGBoost) is proposed to predict the price. The proposed model is compared with the ensemble models like XGBoost, LightBoost and CatBoost. The proposed model outperforms the existing ensemble boosting algorithms.

18.
BMJ Case Rep ; 15(8)2022 Aug 17.
Artigo em Inglês | MEDLINE | ID: mdl-35977749

RESUMO

Flap displacement is a rare but vision-threatening complication of laser-assisted in situ keratomileusis (LASIK). A young male patient underwent uneventful microkeratome-assisted LASIK. One-week postoperatively, flap displacement was noted in his right eye with its lower edge folded inwards, macrostria at the superior edge and the epithelium covering the bare stroma and into the interface. Anterior segment optical coherence tomography (AS-OCT) delineated the morphology of the displaced flap and the extent of epithelial ingrowth. The flap was repositioned by unrolling the fold and all the exposed surfaces were debrided to remove the epithelial ingrowth. Two months later, his corrected distance visual acuity improved to 20/30, and a smooth surface could be achieved. Infolded LASIK flap is a rare complication, which requires timely surgical intervention to achieve successful anatomical and functional outcomes. AS-OCT can be pivotal in determining the extent of infolding as well to delineate the extent of epithelial ingrowth within the interface.


Assuntos
Luxações Articulares , Ceratomileuse Assistida por Excimer Laser In Situ , Humanos , Ceratomileuse Assistida por Excimer Laser In Situ/efeitos adversos , Masculino , Complicações Pós-Operatórias/diagnóstico por imagem , Complicações Pós-Operatórias/cirurgia , Período Pós-Operatório , Retalhos Cirúrgicos , Tomografia de Coerência Óptica/métodos , Acuidade Visual
19.
Diabetes Res Clin Pract ; 190: 109988, 2022 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-35835257

RESUMO

AIMS/OBJECTIVES: To determine the correlation between serum HDL levels with HRV indices in patients with T2DM. MATERIALS AND METHODS: The study included 120 type 2 DM patients aged 35-65 years of either sex by simple random sampling. One-minute HRV was analyzed during deep breathing and fasting serum HDL levels was estimated in all patients. Data were analyzed using SPSS 20.0. Karl Pearson's correlation coefficient for relationship and Multiple linear regression analysis was applied for assessment of the influence of independent variables (HRV Indices) on a dependent variable (serum HDL levels). P < 0.05 was considered statistically significant. RESULTS: Significant negative correlation was observed between serum HDL levels with Mean HR (r = 0.7422, p < 0.001)), LFnu (r = -0.6172, p < 0.001) and ratio of LF/HF (r = 0.5333, p < 0.001). But significant positive correlation was observed between serum HDL levels with HFnu (r = 0.6438, p < 0.001), SDNN, (r = 0.7495, p < 0.001)), RMSSD (r = 0.6348, p < 0.001) and pNN50 % (r = 0.8187, p < 0.001). CONCLUSIONS: Our findings suggest that HDL-C level and all other HRV indices are dependent on each other in patients with T2DM. Most of these patients with low HDL-C level might be associated with autonomic imbalance; this in turn is detected by a simple bedside test of 1-minute HRV during deep breathing.


Assuntos
Doenças do Sistema Nervoso Autônomo , Diabetes Mellitus Tipo 2 , Jejum , Frequência Cardíaca , Humanos , Análise de Regressão
20.
Dermatol Ther ; 35(7): e15536, 2022 07.
Artigo em Inglês | MEDLINE | ID: mdl-35462452

RESUMO

Phototherapy is an extremely effective and established therapeutic modality in a variety of dermatological disorders. However, there has been a constant concern with respect to its long-term usage as some of the studies have identified the risk of cutaneous malignancy associated with phototherapy. The carcinogenic potential of PUVA has been demonstrated in most US studies; however, the studies done on Asian and Arabian-African population have not corroborated similar findings, thus suggesting that the darker skin may confer protection against the development of cutaneous malignancy following phototherapy. The main aim of the present study was to assess the safety of phototherapy (bath PUVA and NBUVB) in Indian population (Fitzpatrick skin types IV and V) with respect to its carcinogenic potential and to determine the maximum cumulative dose that our patients could tolerate without developing any untoward complications such as cutaneous malignancy. All patients who received phototherapy between January 2006 and October 2016 were enrolled in the study. Details such as cumulative dose, number of phototherapy sessions received, indication for phototherapy, adverse effects such as pigmentary changes, new growths on the skin surface following the therapeutic sessions were entered in a predesigned proforma. This ambispective study had 1300 patients who had received phototherapy over a period of 10 years. A total of 929 patients had received PUVA, and the remaining 371 patients had received NBUVB for various dermatological indications. The average follow-up period for PUVA was 3 years and 6.5 years for NBUVB. The maximum cumulative dose of UVA and UVB that could be safely administered in our patients was 2085 J/cm2 and 1985 mJ/cm2, respectively. None of our patients developed any features of cutaneous malignancy during their follow-up. Both bath-PUVA and NBUVB are safe and efficacious in treating patients of darker skin types (IV and V). The risk of developing cutaneous malignancy is negligible in this subset of patients. However, more studies need to be done on the Asian population to substantiate the same.


Assuntos
Fototerapia , Neoplasias Cutâneas , Carcinogênese , Humanos , Índia , Terapia PUVA/efeitos adversos , Fototerapia/efeitos adversos , Neoplasias Cutâneas/tratamento farmacológico , Neoplasias Cutâneas/etiologia , Terapia Ultravioleta/efeitos adversos
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