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1.
PeerJ ; 12: e16903, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-38562993

RESUMO

Advertisement calls in frogs have evolved to be species-specific signals of recognition and are therefore considered an essential component of integrative taxonomic approaches to identify species and delineate their distribution range. The species rich genus Microhyla is a particularly challenging group for species identification, discovery and conservation management due to the small size, conserved morphology and wide distribution of its members, necessitating the need for a thorough description of their vocalization. In this study, we provide quantitative description of the vocal behaviour of Microhyla nilphamariensis, a widely distributed south Asian species, from Delhi, India, based on call recordings of 18 individuals and assessment of 21 call properties. Based on the properties measured acrossed 360 calls, we find that a typical advertisement call of M. nilphamariensis lasts for 393.5 ±  57.5 ms, has 17 pulses on average and produce pulses at rate of 39 pulses/s. The overall call dominant frequency was found to be 2.8 KHz and the call spectrum consisted of two dominant frequency peaks centered at 1.6 KHz and 3.6 KHz, ranging between 1.5-4.1 KHz. Apart from its typical advertisement call, our study also reveals the presence of three 'rare' call types, previously unreported in this species. We describe variability in call properties and discuss their relation to body size and temperature. We found that overall dominant frequency 1 (spectral property) was found to be correlated with body size, while first pulse period (temporal property) was found to be correlated with temperature. Further, we compare the vocal repertoire of M. nilphamariensis with that of the congener Microhyla ornata from the western coast of India and Sri Lanka and also compare the call properties of these two populations of M. ornata to investigate intra-specific call variation. We find statistically significant differentiation in their acoustic repertoire in both cases. Based on 18 call properties (out of 20), individuals of each locality clearly segregate on PCA factor plane forming separate groups. Discriminant function analysis (DFA) using PCA factors shows 100% classification success with individuals of each locality getting classified to a discrete group. This confirms significant acoustic differentiation between these species as well as between geographically distant conspecifics. The data generated in this study will be useful for comparative bioacoustic analysis of Microhyla species and can be utilized to monitor populations and devise conservation management plan for threatened species in this group.


Assuntos
Acústica , Anuros , Humanos , Animais , Sri Lanka , Anuros/anatomia & histologia , Índia , Vocalização Animal
2.
HLA ; 103(3): e15436, 2024 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-38470352

RESUMO

HLA-B*40:06:01:18 differs from HLA-B*40:06:01:02 by one nucleotide change in the 5'UTR (T > C).


Assuntos
Povo Asiático , Genes MHC Classe I , Humanos , Alelos , Regiões 5' não Traduzidas , Antígenos HLA-B/genética
3.
J Maxillofac Oral Surg ; 21(2): 396-404, 2022 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-35712435

RESUMO

Aim: The aim of this study was to compare the treatment outcome following fixation of midface fractures with microplates to that of miniplates. Materials and Methods: The prospective study included 30 patients with confirmed diagnosis of midface fractures (Le Fort I, II, III, ZMC fractures or combination) and who gave written informed consent. The patients were categorized into microplate (1.2 mm) group and miniplate (2.0 mm) group with 15 patients in each group using computer-generated randomization. The clinical parameters like occlusion, stability of fixation, chewing efficiency, pain, infection, paresthesia, plate exposure, palpability, aesthetic outcomes and patient's perspective were assessed on postoperative day 1, day 3, after 1 week, 1 month and after 3 months. Results: There was no statistically significant difference between the two groups in terms of occlusion, stability of fixation, chewing efficiency, pain, infection, paresthesia, plate exposure, aesthetic outcomes and patient's perspective. One patient in microplate group and five patients in miniplate group complained of plate palpability (P = 0.16), suggesting clinically significant difference but statistically no significant difference. Conclusion: Microplate osteosynthesis gives equivalent results compared to miniplate osteosynthesis, in the fixation of midface fractures in terms of stability and function and clinically superior in terms of aesthetics.

4.
Front Immunol ; 12: 740620, 2021.
Artigo em Inglês | MEDLINE | ID: mdl-34867962

RESUMO

While the immunomodulatory pathways initiated in immune cells contribute to therapeutic response, their activation in cancer cells play a role in cancer progression. Also, many of the aberrantly expressed immunomodulators on cancer cells are considered as therapeutic targets. Here, we introduce host defense peptide (HDP), a known immuomodulator, as a therapeutic agent to target them. The cationic host defense peptides (HDPs), an integral part of the innate immune system, possess membranolytic activity, which imparts antimicrobial and antitumor efficacy to it. They act as immunomodulators by activating the immune cells. Though their antimicrobial function has been recently reassigned to immunoregulation, their antitumor activity is still attributed to its membranolytic activity. This membrane pore formation ability, which is proportional to the concentration of the peptide, also leads to side effects like hemolysis, limiting their therapeutic application. So, despite the identification of a variety of anticancer HDPs, their clinical utility is limited. Though HDPs are shown to exert the immunomodulatory activity through specific membrane targets on immune cells, their targets on cancer cells are unknown. We show that SSTP1, a novel HDP identified by shotgun cloning, binds to the active IL6/IL6Rα/gp130 complex on cancer cells, rearranging the active site residues. In contrast to the IL6 blockers inhibiting JAK/STAT activity, SSTP1 shifts the proliferative IL6/JAK/STAT signaling to the apoptotic IL6/JNK/AP1 pathway. In IL6Rα-overexpressing cancer cells, SSTP1 induces apoptosis at low concentration through JNK pathway, without causing significant membrane disruption. We highlight the importance of immunomodulatory pathways in cancer apoptosis, apart from its established role in immune cell regulation and cancer cell proliferation. Our study suggests that identification of the membrane targets for the promising anticancer HDPs might lead to the identification of new drugs for targeted therapy.


Assuntos
Proteínas de Anfíbios/imunologia , Peptídeos Catiônicos Antimicrobianos/imunologia , Anuros , Apoptose/imunologia , Interleucina-6/imunologia , Neoplasias/imunologia , Animais , Linhagem Celular Tumoral , Humanos
5.
Asian J Neurosurg ; 16(2): 321-325, 2021.
Artigo em Inglês | MEDLINE | ID: mdl-34268159

RESUMO

INTRODUCTION: Carotid endarterectomy (CEA) is a surgical procedure done to prevent future embolic stroke in patients with internal carotid artery (ICA) stenosis. Conventional CEA (c-CEA) and eversion CEA (e-CEA) are two surgical techniques used for the above. As carotid shunt is rarely used in e-CEA, a certain amount of cerebral ischemia occurs in patients who were already having carotid stenosis. In this study, we have evaluated the outcome of two surgical techniques in severe carotid stenosis and impact of carotid shunting on the postoperative outcome. MATERIALS AND METHODS: In this single-center prospective nonrandomized trial, a total of 62 patients who underwent CEA (c-CEA, n = 31; e-CEA, n = 31) for symptomatic ipsilateral ICA stenosis ≥50% between January 2018 and December 2019 were included. RESULTS: A total of 62 patients who underwent CEA (c-CEA, n = 31; e-CEA, n = 31) for symptomatic ipsilateral ICA stenosis ≥50% were included in the study. There was no major stroke or stroke related death in both the study groups. One patient in e-CEA had carotid occlusion and minor stroke. There was no statistically significant difference in minor stroke (e-CEA [3.2%], c-CEA [3.2%], P = 1), transient ischemic attack (e-CEA [3.2%], c-CEA n = 0, P = 0.3), postoperative MI (e-CEA (3.2%), c-CEA (3.2%), P = 1), hematoma (e-CEA [3.2%], c-CEA n = 0, P = 0.3), and re-exploration (e-CEA [3.2%], c-CEA n = 0, P = 0.3). The incidence of cranial nerve (CN) dysfunction was significantly higher in eversion group as compared to c-CEA (e-CEA n = 6 [19.4%], c-CEA n = 1, [3.2%] P = 0.045). CONCLUSION: Our study showed that the early outcomes of both c-CEA and e-CEA techniques are comparable. The routine insertion of carotid shunt even though decreases the cerebral ischemic time, it does not offer any additional advantage of decreasing perioperative stroke. The choice of the CEA technique depends on the experience and familiarity of the individual surgeon as both the techniques have their own advantages and disadvantages.

6.
Craniomaxillofac Trauma Reconstr ; 14(1): 4-10, 2021 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-33613829

RESUMO

STUDY DESIGN: Self-tapping and self-drilling screws are two modalities available for plate fixation. When compared to self-drilling, self-tapping screws have a few drawbacks like screw loosening, thermal osteolysis, equipment dependent, and time-consuming. AIM: The aim of this study was to compare the efficacy of self-tapping and self-drilling screws with relation to plate retention and stability in internal fixation of mandibular fractures using 3D finite element analysis (FEA). OBJECTIVES: The objective of this study was to determine the influence of screw placement technique on stress concentration and deformation occurring at the screw-bone interface in self-drilling and self-tapping screws. MATERIALS AND METHODS: A 3D computer-aided design modeling system was used to build a trilaminate mandibular bone, self-tapping screw and self-drilling screw, and a 2-holed miniplate with gap that were converted into finite element models using Hypermesh 13.0 software. Material properties and boundary conditions were assigned to these models. Pullout, torque, and torsional forces were applied to evaluate the stress concentration and deformation at the screw-bone interface. RESULTS: The comparison of stress concentration and deformation values between the two types of screws was interpreted using ANSYS software version 14.5. Results of torque test, pullout test, and torsional test showed maximum Von Mises stress, and deformation around the screw-bone interface was higher in self-tapping screw than in self-drilling screw. CONCLUSION: Within the limitations of the 3D FEA, the findings provided significant evidence to suggest that self-tapping screws have a greater incidence of fatigue when compared to self-drilling screws as there was more stress distribution and deformation at their screw-bone interface.

8.
J Clin Sleep Med ; 16(7): 1213-1214, 2020 07 15.
Artigo em Inglês | MEDLINE | ID: mdl-32672534

RESUMO

None: Sexsomnia is a parasomnia consisting of sexual behavior during non-rapid eye movement sleep. To date, there have been 116 clinical cases of sexsomnia reported and most were treated with clonazepam. We present a case of an adult male with sexsomnia that started during his college days. He presented to us because of problems in his current marriage arising from sexual behavior during sleep. Polysomnography revealed no significant sleep-disordered breathing, electroencephalography abnormality, or abnormal movement during non-rapid eye movement and rapid eye movement (REM) sleep. Alcohol consumption was reported to worsen his sexsomnia. To avoid the neuro-depressant effects of benzodiazepines, paroxetine was administered and resulted in complete resolution of sexsomnia.


Assuntos
Parassonias , Síndromes da Apneia do Sono , Adulto , Humanos , Masculino , Parassonias/tratamento farmacológico , Paroxetina/uso terapêutico , Polissonografia , Sono
9.
Curr Comput Aided Drug Des ; 16(5): 555-563, 2020.
Artigo em Inglês | MEDLINE | ID: mdl-31654519

RESUMO

BACKGROUND: H+/K+ ATPase a protein present in the gastric parietal cells is a better target for the prevention and treatment of gastric ulcer. Plant flavonoids have been reported to elicit anti-ulcer activity by inhibiting the proton pump as well as by antioxidant defense mechanism. METHODS: Chloroform fraction of hydro-alcoholic extract of passion fruit was screened for proton pump inhibitory assay using goat parietal cell. In-silico computational docking studies were carried out using Glide program in order to validate the inhibitory action of selected constituents. RESULTS: The flavonoid rich fruit possess a promising radical scavenging activity against DPPH. 10.41µg/mL is sufficient to inhibit 50% of ATPase enzyme activity. A synergistic activity was also achieved by the fruit with sub-effective doses of lansoprazole. Fenton's oxidation induced by H2O2 was also blunted by the fruit extract. CONCLUSION: The in-vitro and in-silico findings indicated that, passion fruit can be a good dietary supplement for the prevention and management of ulcer.


Assuntos
ATPase Trocadora de Hidrogênio-Potássio/metabolismo , Simulação de Acoplamento Molecular , Passiflora/química , Extratos Vegetais/farmacologia , Inibidores da Bomba de Prótons/farmacologia , Úlcera Gástrica/tratamento farmacológico , Animais , Flavonoides/análise , Flavonoides/farmacologia , Frutas , Cabras , Oxirredução , Estômago
12.
Br J Ophthalmol ; 103(6): 837-843, 2019 06.
Artigo em Inglês | MEDLINE | ID: mdl-30269098

RESUMO

AIM: To assess the impact of deprivation on diabetic retinopathy presentation and related treatment interventions, as observed within the UK hospital eye service. METHODS: This is a multicentre, national diabetic retinopathy database study with anonymised data extraction across 22 centres from an electronic medical record system. The following were the inclusion criteria: all patients with diabetes and a recorded, structured diabetic retinopathy grade. The minimum data set included, for baseline, age and Index of Multiple Deprivation, based on residential postcode; and for all time points, visual acuity, ETDRS grading of retinopathy and maculopathy, and interventions (laser, intravitreal therapies and surgery). The main  outcome measures were (1) visual acuity and binocular visual state, and (2) presence of sight-threatening complications and need for early treatment. RESULTS: 79 775 patients met the inclusion criteria. Deprivation was associated with later presentation in patients with diabetic eye disease: the OR of being sight-impaired at entry into the hospital eye service (defined as 6/18 to better than 3/60 in the better seeing eye) was 1.29 (95% CI 1.20 to 1.39) for the most deprived decile vs 0.77 (95% CI 0.70 to 0.86) for the least deprived decile; the OR for being severely sight-impaired (3/60 or worse in the better seeing eye) was 1.17 (95% CI 0.90 to 1.55) for the most deprived decile vs 0.88 (95% CI 0.61 to 1.27) for the least deprived decile (reference=fifth decile in all cases). There is also variation in sight-threatening complications at presentation and treatment undertaken: the least deprived deciles had lower chance of having a tractional retinal detachment (OR=0.48 and 0.58 for deciles 9 and 10, 95% CI 0.24 to 0.90 and 0.29 to 1.09, respectively); in terms of accessing treatment, the rate of having a vitrectomy was lowest in the most deprived cohort (OR=0.34, 95% CI 0.19 to 0.58). CONCLUSIONS: This large real-world study suggests that first presentation at a hospital eye clinic with visual loss or sight-threatening diabetic eye disease is associated with deprivation. These initial hospital visits represent the first opportunities to receive treatment and to formally engage with support services. Such patients are more likely to be sight-impaired or severely sight-impaired at presentation, and may need additional resources to engage with the hospital eye services over complex treatment schedules.


Assuntos
Retinopatia Diabética/epidemiologia , Gerenciamento Clínico , Registros Eletrônicos de Saúde , Hospitais/estatística & dados numéricos , Avaliação de Resultados em Cuidados de Saúde/métodos , Acuidade Visual , Retinopatia Diabética/diagnóstico , Retinopatia Diabética/terapia , Feminino , Humanos , Incidência , Masculino , Pessoa de Meia-Idade , Estudos Retrospectivos , Tomografia de Coerência Óptica , Reino Unido/epidemiologia
13.
ANZ J Surg ; 88(12): 1333-1336, 2018 12.
Artigo em Inglês | MEDLINE | ID: mdl-29984528

RESUMO

BACKGROUND: Acute pancreatitis (AP) is a common cause for hospital admission, but some patients have a prolonged stay. The aim of this study was to identify patients with mild AP who had a prolonged hospital stay, who potentially could be discharged at day 2 to enhanced outpatient care. METHODS: Data was retrospectively collected on all patients admitted to the Royal Darwin Hospital between May 2016 and February 2017 with a diagnosis of mild AP to identify factors that may safely predict early discharge to enhanced outpatient care. RESULTS: Of 115 admissions, 62% were male, 50% indigenous and alcohol was causative in 53%. A total of 75 (65%) patients stayed more than 2 days and used 342 bed-days. Factors identified in the first 2 days of admission associated with a length of stay more than 2 days (R2 = 0.56, P < 0.0001) included pain score >5 (P = 0.034), temperature ≥38°C (P < 0.0001), white blood cell count >18 (P = 0.036), not tolerating oral diet by day 2 (P = 0.002), severe pancreatitis on imaging (P = 0.008) and readmission in the previous 30 days (P = 0.035). Using these criteria, 57% of all admissions and 87% of admissions greater than 2 days could potentially have been transferred to enhanced outpatient care at day 2 for management. This would have saved 277 inpatient bed-days and an estimated $122 771 over the 9-month study period. CONCLUSIONS: A significant proportion of patients admitted with mild AP, who stay longer than 2 days in hospital, could potentially be identified and discharged early to enhanced outpatient care.


Assuntos
Assistência Ambulatorial/normas , Avaliação de Resultados em Cuidados de Saúde , Pancreatite/terapia , Alta do Paciente/estatística & dados numéricos , Doença Aguda , Feminino , Seguimentos , Humanos , Tempo de Internação/tendências , Masculino , Northern Territory , Prognóstico , Estudos Retrospectivos , Fatores de Tempo
14.
J Maxillofac Oral Surg ; 16(4): 471-478, 2017 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-29038630

RESUMO

PURPOSE: Bone loss following extraction is maximum in horizontal dimension. Height is also reduced which is pronounced on the buccal aspect. Various surgical procedures are available to correct the bone volume viz. GBR, onlay bone grafting, alveolar distraction and sandwich osteotomy. Sandwich osteotomy has been found to increase the vertical alveolar bone height successfully. OBJECTIVES: The objective of the study was to assess the effect of alveolar segmental sandwich osteotomy on alveolar height and crestal width. MATERIALS AND METHODOLOGY: A prospective study was undertaken from December 2012 to August 2014. Seven patients with 12 implant sites with a mean age of 36 years were recruited. All seven patients with 12 implant sites underwent alveolar segmental sandwich osteotomy and interpositional bone grafting. Alveolar bone height was assessed radiographically preoperatively, immediate post-op, and at 3 months post-op. Alveolar bone width was assessed radiographically preoperatively and at 3 months post-op. Statistical significance was inferred at p < 0.05. RESULTS: The mean vertical augmentation at immediate post-op was 6.58 mm (p = 0.001). The vertical augmentation that was achieved 3 months post-op was a mean of 3.75 mm which was statistically significant (p = 0.004). The change in alveolar height from immediate post-op to 3 month post-op was a mean 1.69 mm. The mean change in alveolar crestal width at 3 months was a mean of -0.29 mm (p = 0.57). CONCLUSION: Sandwich osteotomy can be used as an alternative technique to increase alveolar bone height prior to implant placement. Moderate alveolar deficiency can be predictably corrected by this technique.

15.
Br J Ophthalmol ; 101(12): 1673-1678, 2017 12.
Artigo em Inglês | MEDLINE | ID: mdl-28487377

RESUMO

AIM: To assess the rate of 'treatment-requiring diabetic macular oedema (DMO)' in eyes for the two years before and after cataract surgery. METHODS: Multicentre national diabetic retinopathy (DR) database study with anonymised data extraction across 19 centres from an electronic medical record system. INCLUSION CRITERIA: eyes undergoing cataract surgery in patients with diabetes with no history of DMO prior to study start. The minimum dataset included: age, visual acuity (all time-points), injection episodes, timing of cataract surgery and ETDRS grading of retinopathy and maculopathy. MAIN OUTCOME MEASURE: rate of developing first episode of treatment-requiring DMO in relation to timing of cataract surgery in the same eye. RESULTS: 4850 eyes met the inclusion criteria. The rate of developing treatment-requiring DMO in this cohort was 2.9% in the year prior to surgery versus 5.3% in the year after surgery (p<0.01). The risk of 'treatment-requiring DMO' increased sharply after surgery, peaking in the 3-6 months' period (annualised rates of 5.2%, 6.8%, 5.6% and 4.0% for the 0-3, 3-6, 6-9 and 9-12 months' post-operative time periods respectively). Risk was associated with pre-operative grade of retinopathy: risk of DMO in the first year post-operatively being 1.0% (no DR pre-operatively), 5.4% (mild non-proliferative diabetic retinopathy; NPDR), 10.0% (moderate NPDR), 13.1% (severe NPDR) and 4.9% (PDR) (p<0.01). CONCLUSIONS: This large real-world study demonstrates that the rate of developing treatment-requiring DMO increases sharply in the year after cataract surgery for all grades of retinopathy, peaking in the 3-6 months' postoperative period. Patients with moderate and severe NPDR are at particularly high risk.


Assuntos
Extração de Catarata , Catarata/complicações , Retinopatia Diabética/complicações , Registros Eletrônicos de Saúde , Edema Macular/etiologia , Avaliação de Resultados em Cuidados de Saúde , Acuidade Visual , Idoso , Retinopatia Diabética/diagnóstico , Retinopatia Diabética/terapia , Feminino , Seguimentos , Humanos , Edema Macular/diagnóstico , Edema Macular/terapia , Masculino , Pessoa de Meia-Idade , Período Pós-Operatório , Fatores de Tempo , Tomografia de Coerência Óptica , Reino Unido
16.
Immunity ; 46(4): 587-595, 2017 04 18.
Artigo em Inglês | MEDLINE | ID: mdl-28423338

RESUMO

Although vaccines confer protection against influenza A viruses, antiviral treatment becomes the first line of defense during pandemics because there is insufficient time to produce vaccines. Current antiviral drugs are susceptible to drug resistance, and developing new antivirals is essential. We studied host defense peptides from the skin of the South Indian frog and demonstrated that one of these, which we named "urumin," is virucidal for H1 hemagglutinin-bearing human influenza A viruses. This peptide specifically targeted the conserved stalk region of H1 hemagglutinin and was effective against drug-resistant H1 influenza viruses. Using electron microscopy, we showed that this peptide physically destroyed influenza virions. It also protected naive mice from lethal influenza infection. Urumin represents a unique class of anti-influenza virucide that specifically targets the hemagglutinin stalk region, similar to targeting of antibodies induced by universal influenza vaccines. Urumin therefore has the potential to contribute to first-line anti-viral treatments during influenza outbreaks.


Assuntos
Proteínas de Anfíbios/farmacologia , Vírus da Influenza A/efeitos dos fármacos , Influenza Humana/prevenção & controle , Infecções por Orthomyxoviridae/prevenção & controle , Peptídeos/farmacologia , Sequência de Aminoácidos , Proteínas de Anfíbios/imunologia , Animais , Antivirais/imunologia , Antivirais/farmacologia , Cães , Relação Dose-Resposta a Droga , Glicoproteínas de Hemaglutininação de Vírus da Influenza/imunologia , Glicoproteínas de Hemaglutininação de Vírus da Influenza/metabolismo , Interações Hospedeiro-Patógeno/efeitos dos fármacos , Interações Hospedeiro-Patógeno/imunologia , Humanos , Vírus da Influenza A/imunologia , Vírus da Influenza A/metabolismo , Influenza Humana/imunologia , Influenza Humana/virologia , Células Madin Darby de Rim Canino , Camundongos Endogâmicos BALB C , Infecções por Orthomyxoviridae/imunologia , Infecções por Orthomyxoviridae/virologia , Peptídeos/imunologia , Ranidae/metabolismo , Análise de Sobrevida , Resultado do Tratamento , Vírion/efeitos dos fármacos , Vírion/imunologia , Vírion/metabolismo
17.
Br J Ophthalmol ; 101(1): 75-80, 2017 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-27965262

RESUMO

AIMS: To describe baseline characteristics and visual outcome for eyes treated with ranibizumab for diabetic macular oedema (DMO) from a multicentre database. METHODS: Structured clinical data were anonymised and extracted from an electronic medical record from 19 participating UK centres: age at first injection, ETDRS visual acuity (VA), number of injections, ETDRS diabetic retinopathy (DR) and maculopathy grade at baseline and visits. The main outcomes were change in mean VA from baseline, number of injections and clinic visits and characteristics affecting VA change and DR grade. RESULTS: Data from 12 989 clinic visits was collated from baseline and follow-up for 3103 eyes. Mean age at first treatment was 66 years. Mean VA (letters) for eyes followed at least 2 years was 51.1 (SD=19.3) at baseline, 54.2 (SD: 18.6) and 52.5 (SD: 19.4) at 1 and 2 years, respectively. Mean visual gain was five letters. The proportion of eyes with VA of 72 letters or better was 25% (baseline) and 33% (1 year) for treatment naïve eyes. Eyes followed for at least 6 months received a mean of 3.3 injections over a mean of 6.9 outpatient visits in 1 year. CONCLUSIONS: In a large cohort of eyes with DMO treated with ranibizumab injections in the UK, 33% of patients achieved better than or equal to 6/12 in the treated eye at 12 months compared with 25% at baseline. The mean visual gain was five letters. Eyes with excellent VA at baseline maintain good vision at 18 months.


Assuntos
Inibidores da Angiogênese/uso terapêutico , Retinopatia Diabética/tratamento farmacológico , Edema Macular/tratamento farmacológico , Ranibizumab/administração & dosagem , Idoso , Retinopatia Diabética/fisiopatologia , Feminino , Humanos , Injeções Intravítreas , Edema Macular/fisiopatologia , Masculino , Pessoa de Meia-Idade , Leitura , Acuidade Visual/fisiologia
18.
Br J Ophthalmol ; 99(8): 1045-50, 2015 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-25680619

RESUMO

BACKGROUND/AIMS: To study the effectiveness and clinical relevance of eyes treated with good (better than 6/12 or >70 Early Treatment Diabetic Retinopathy Study letters) visual acuity (VA) when initiating treatment with ranibizumab for neovascular age-related macular degeneration (nAMD) in the UK National Health Service. Currently eyes with VA better than (>) 6/12 are not routinely funded for therapy. METHODS: Multicentre national nAMD database study on patients treated 3-5 years prior to the analysis. Anonymised structured data were collected from 14 centres. The primary outcome was the mean VA at year 1, 2 and 3. Secondary measures included the number of clinic visits and injections. RESULTS: The study included 12 951 treatment-naive eyes of 11 135 patients receiving 92 976 ranibizumab treatment episodes. A total of 754 patients had baseline VA better than 6/12 and at least 1-year of follow up. Mean VA of first treated eyes with baseline VA>6/12 at year 1, 2, 3 were 6/10, 6/12, 6/15, respectively and those with baseline VA 6/12 to >6/24 were 6/15, 6/17, 6/20, respectively (p values <0.001 for comparing differences between 6/12 and 6/12-6/24 groups). For the second eyes with baseline VA>6/12, mean VA at year 1, 2, 3 were 6/9, 6/9, 6/10 and those with baseline VA 6/12 to >6/24 were 6/15, 6/15, 6/27, respectively (p values <0.001-0.005). There was no significant difference in the average number of clinic visits or injections between those with VA better and worse than 6/12. CONCLUSIONS: All eyes with baseline VA>6/12 maintained better mean VA than the eyes with baseline VA 6/12 to >6/24 at all time points for at least 2 years. The significantly better visual outcome in patients who were treated with good baseline VA has implications on future policy regarding the treatment criteria for nAMD patients' funding.


Assuntos
Inibidores da Angiogênese/uso terapêutico , Anticorpos Monoclonais Humanizados/uso terapêutico , Acuidade Visual/fisiologia , Degeneração Macular Exsudativa/tratamento farmacológico , Idoso , Idoso de 80 Anos ou mais , Bases de Dados Factuais , Registros Eletrônicos de Saúde/estatística & dados numéricos , Feminino , Humanos , Injeções Intravítreas , Masculino , Pessoa de Meia-Idade , Ranibizumab , Retratamento , Reino Unido , Fator A de Crescimento do Endotélio Vascular/antagonistas & inibidores , Degeneração Macular Exsudativa/diagnóstico , Degeneração Macular Exsudativa/fisiopatologia
19.
Antibiotics (Basel) ; 4(2): 136-59, 2015 Mar 30.
Artigo em Inglês | MEDLINE | ID: mdl-27025618

RESUMO

Host defense peptides (HDPs) are currently major focal points of medical research as infectious microbes are gaining resistance to existing drugs. They are effective against multi-drug resistant pathogens due to their unique primary target, biological membranes, and their peculiar mode of action. Even though HDPs from 60 Asian frog species belonging to 15 genera have been characterized, research into these peptides is at a very early stage. The purpose of this review is to showcase the status of peptide research in Asia. Here we provide a summary of HDPs from Asian frogs.

20.
Ophthalmology ; 121(10): 1966-75, 2014 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-24953791

RESUMO

PURPOSE: To study the characteristics of second treated eyes in patients with neovascular age-related macular degeneration (nAMD) treated with ranibizumab in the United Kingdom National Health Service. DESIGN: Multicenter national nAMD database study. PARTICIPANTS: Twelve thousand nine hundred fifty-one treatment-naïve eyes of 11,135 patients receiving 92,976 ranibizumab injections. METHODS: Up to 5 years of routinely collected, anonymized data within electronic medical record systems were extracted remotely from 14 centers. Participating centers exclusively used ranibizumab to treat nAMD (loading phase of 3 monthly injections followed by monthly visits and pro re nata re-treatment). The minimum data set included: age, logarithm of the minimum angle of resolution (logMAR) visual acuity (VA) at baseline and at all subsequent visits, and injection episodes. MAIN OUTCOME MEASURES: Baseline, change and actual VA over 3 years, and number of treatments and clinic visits. RESULTS: During the study, 1816 (16.3%) of the 11 135 patients received treatment to the fellow eye. Mean baseline and final VA were 0.66 (standard deviation, 0.32) and 0.65 (0.40) for first treated eyes and 0.41 (0.34) and 0.56 (0.40) for second treated eyes. The rate of VA loss after the loading phase was similar in first and second treated eyes (0.03 and 0.05 logMAR units/year). When fellow eyes with baseline VA worse than 20/200 were excluded to restrict analyses to eyes at risk of nAMD, the rate of second-eye involvement was 14.0% per year (42%/3 years). Mean number of injections/visits in years 1, 2, and 3 were similar for first and second treated eyes (5.6/8.2, 3.9/8.0, 3.8/8.2 and 5.5/8.7, 3.6/9.4, and 3.8/9.1, respectively). CONCLUSIONS: Second treated eyes with nAMD commence treatment with better baseline VA, do not show significant vision gain but maintain better VA than first treated eyes at all time points for at least 3 years, making them the more important eye functionally. These data highlight the high burden of second eye involvement, with almost half of all eyes at risk requiring bilateral treatment by 3 years, and the need for regular monitoring of fellow eyes for best visual outcomes which theoretically may reduce the benefits of extended monitoring regimens.


Assuntos
Inibidores da Angiogênese/uso terapêutico , Anticorpos Monoclonais Humanizados/uso terapêutico , Neovascularização de Coroide/tratamento farmacológico , Degeneração Macular/tratamento farmacológico , Idoso , Idoso de 80 Anos ou mais , Neovascularização de Coroide/epidemiologia , Feminino , Humanos , Incidência , Degeneração Macular/epidemiologia , Masculino , Pessoa de Meia-Idade , Ranibizumab , Reino Unido/epidemiologia , Acuidade Visual
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