Basis Of Volume Research Articles

Design and discovery of novel monastrol-1,3,5-triazines as potent anti-breast cancer agent via attenuating Epidermal Growth Factor Receptor tyrosine kinase

A novel series of hybrid analogues of monastrol-1,3,5-triazine were designed and developed via one-pot synthesis using Bi(NO3)3 as a catalyst. Entire compounds were evaluated for their anticancer activity against HeLa (cervical cancer), MCF-7 (breast cancer), HL-60 (Human promyelocytic leukemia), HepG2 (Hepatocellular carcinoma) and MCF 12A (normal epithelial breast cell line) using MTT assay, where they showed highest inhibitory activity against MCF-7. The molecules were also found to be non-toxic to MCF 12A cells. These molecules showed considerable inhibitory percentage against Epidermal Growth Factor Receptor tyrosine kinase (EGFR-TK), in in-vitro assay. Molecular docking study was carried out on the analogs and reference compound (Erlotinib) into the ATP binding site of EGFR-TK domain (PDB ID:1M17) to elucidate vital structural residues necessary for bioactivity. The effect of most active compound 7l was also estimated in-vivo in DMBA induced mammary tumor in female Sprague-Dawley rats. The effect of anti-breast cancer effect of 7l was quantified on the basis of tumour incidence, body weight and tumor volume in DMBA-induced rats. Its effect on biochemical parameters, such as antioxidant status (SOD, CAT, GPX and GSH) and lipid peroxidation was also studied. The compound 7l showed inhibition of EGFR downstream signalling in the western blot analysis.

Treating Decompression Sickness: Military Flight Simulation Site-Community Hospital Partnership.

High-altitude flight simulation familiarizes military trainees with the symptoms of hypoxia to prepare them for emergency situations. Decompression sickness (DCS) can occur as a result of these simulations. In cases when ground-level supplemental oxygen does not resolve symptoms, hyperbaric oxygen (HBO) therapy is indicated. Many military hyperbaric chambers have been closed because of cost reductions, necessitating partnerships with community hospitals to ensure access to treatment. This article describes the unique arrangement between a community hospital in Colorado and a military training site to treat DCS cases emergently. We gathered cost data from the community hospital to estimate and compare the cost of providing HBO therapy in the hospital versus a standalone chamber similar to the former military hyperbaric chamber. Since the closure of the military hyperbaric chamber, the community hospital treated an estimated 50 patients with DCS requiring HBO therapy attributed to high-altitude flight simulation between October 2003 and April 2015. Cost to the institution providing HBO treatment varies widely on the basis of patient volume. Assuming a volume of five treatments, per-treatment cost at a standalone center is $95,380. In contrast, per-treatment cost at the hospital assuming a volume of 1,000 treatments commensurate with the hospital's ability to bill for other services is $698 per treatment. The cost analysis demonstrates that the per-treatment cost of operating a standalone HBO therapy center may be greater than 100 times that of operating a center at a community hospital, suggesting the arrangement is beneficial to the military.

Accuracy analysis of intrahepatic fat density measurements using dual-energy computed tomography: Validation using a test phantom.

Currently, no standardized method for measuring intrahepatic fat density via conventional computed tomography (CT) exists. We aim to quantify intrahepatic fat density via material decomposition analysis using rapid kilovolt peak-switching dual-energy (RSDE) CT. Homogenized porcine liver and fat (lard) were mixed in various ratios to produce phantoms for fat density verification. The actual fat density was measured on the basis of the phantom volume and weight, and these measurements were used as reference densities. The fat and liver mass attenuation coefficients, which were used as the material basis pairs, were employed in the material decomposition analysis. Then, the measured fat density of each phantom was compared with the reference densities. For fat content differences exceeding 2%, the measured fat density for the phantoms became statistically significant (p < 0.01). The correlation between the reference densities and RSDE-measured fat densities was reasonably high (R > 0.9997); this indicates the validity of this analysis method. Intrahepatic fat density can be measured using the mass attenuation coefficients of fat and liver in a material decomposition analysis. Given the knowledge of the accuracy and the limitations found in this study, our method can quantitatively evaluate fat density.

Patient and Hospital Characteristics Associated with Interhospital Transfer for Adults with Ventilator-Dependent Respiratory Failure.

Patients with ventilator-dependent respiratory failure have improved outcomes at centers with greater expertise; yet, most patients are not treated in such facilities. Efforts to align care for respiratory failure and hospital capability would necessarily require interhospital transfer. To characterize the prevalence and the patient and hospital factors associated with interhospital transfer of adults residing in Florida with ventilator-dependent respiratory failure. We performed a retrospective, observational study using Florida Healthcare Cost and Utilization Project data. We selected patients 18 years of age and older with International Classification of Diseases, Ninth Revision, codes of respiratory failure and mechanical ventilation during 2012 and 2013, and we identified cohorts of patients that did and did not undergo interhospital transfer. We obtained patient sociodemographic and clinical variables and categorized hospitals into subtypes on the basis of patient volume and services provided: large, medium (nonprofit or for-profit), and small. Interhospital transfer was our primary outcome measure. Patient sociodemographics, clinical variables, and hospital types were used as covariates. We identified 2,580 patients with ventilator-dependent respiratory failure who underwent interhospital transfer. Overall, transfer was uncommon, with only 2.9% of patients being transferred. In a hierarchical model, age less than 65 years (odds ratio [OR], 2.09; 95% confidence interval [CI], 1.77-2.45) and tracheostomy (OR, 3.19; 95% CI, 2.80-3.65) were associated with higher odds of transfer, whereas having Medicaid was associated with lower odds of transfer than having commercial insurance (OR, 0.65; 95% CI, 0.56-0.75). Additionally, care in medium-sized for-profit hospitals was associated with lower odds of transfer (OR, 1.37 vs. 2.70) than care in medium nonprofit hospitals, despite similar hospital characteristics. In Florida, interhospital transfer of patients with ventilator-dependent respiratory failure is uncommon and more likely among younger, commercially insured, medically resource-intensive patients. For-profit hospitals are less likely to transfer than nonprofit hospitals. In future studies, researchers should test for geographic variations and examine the clinical implications of selectivity in interhospital transfer of patients with ventilator-dependent respiratory failure.

Transfer to High-Volume Centers Associated With Reduced Mortality After Endovascular Treatment of Acute Stroke.

Some have argued that it may be beneficial to expand the availability of endovascular revascularization services to lower-volume hospitals to minimize the morbidity associated with transfer to larger endovascular centers. We compared the outcomes after revascularization of patients directly admitted to a low-volume center and those transferred to a high-volume center. We searched a national database of hospital-reported outcomes for patients who underwent endovascular revascularization for acute ischemic stroke. Hospitals were categorized as low, medium, or high procedural volume hospitals. Outcomes of inpatient admissions were collected and compared on the basis of admission source and hospital procedural volume. A total of 118 institutions with 8533 patients were included. Mortality rate (14.9% versus 18.6%; P=0.049) and mortality index (1.1 versus 1.6; P=0.048) were significantly lower among directly admitted relative to transferred patients. For all patients, there were significant differences in institutional mortality rate (low: 19.7%, medium: 14.9%, high: 9.8%; P=0.003) and mortality index (low: 1.5, medium: 1.1, high: 0.8; P=0.004) between low-, medium-, and high-volume hospitals. For transferred patients to high-volume centers, both mortality rate (high: 10.0% versus low: 20.4%; P=0.005) and mortality index (high: 0.8 versus low: 1.5; P=0.034) were significantly lower than that observed for directly admitted patients to low-volume hospitals. We report a beneficial effect of treatment at high-volume hospitals in spite of the detrimental effects of transfer. These findings argue for the centralization of care.

Non-small cell lung cancer: Whole-lesion histogram analysis of the apparent diffusion coefficient for assessment of tumor grade, lymphovascular invasion and pleural invasion.

PurposeInvestigating the diagnostic accuracy of histogram analyses of apparent diffusion coefficient (ADC) values for determining non-small cell lung cancer (NSCLC) tumor grades, lymphovascular invasion, and pleural invasion.Materials and methodsWe studied 60 surgically diagnosed NSCLC patients. Diffusion-weighted imaging (DWI) was performed in the axial plane using a navigator-triggered single-shot, echo-planar imaging sequence with prospective acquisition correction. The ADC maps were generated, and we placed a volume-of-interest on the tumor to construct the whole-lesion histogram. Using the histogram, we calculated the mean, 5th, 10th, 25th, 50th, 75th, 90th, and 95th percentiles of ADC, skewness, and kurtosis. Histogram parameters were correlated with tumor grade, lymphovascular invasion, and pleural invasion. We performed a receiver operating characteristics (ROC) analysis to assess the diagnostic performance of histogram parameters for distinguishing different pathologic features.ResultsThe ADC mean, 10th, 25th, 50th, 75th, 90th, and 95th percentiles showed significant differences among the tumor grades. The ADC mean, 25th, 50th, 75th, 90th, and 95th percentiles were significant histogram parameters between high- and low-grade tumors. The ROC analysis between high- and low-grade tumors showed that the 95th percentile ADC achieved the highest area under curve (AUC) at 0.74. Lymphovascular invasion was associated with the ADC mean, 50th, 75th, 90th, and 95th percentiles, skewness, and kurtosis. Kurtosis achieved the highest AUC at 0.809. Pleural invasion was only associated with skewness, with the AUC of 0.648.ConclusionsADC histogram analyses on the basis of the entire tumor volume are able to stratify NSCLCs' tumor grade, lymphovascular invasion and pleural invasion.

Intermittent catheterisation after botulinum toxin injections: the time to reassess our practice.

Botulinum toxin has become a widely adopted treatment for patients with recalcitrant overactive bladder (OAB) symptoms. Some recommend clean intermittent self-catheterisation (CISC) if a postvoid residual (PVR) >200 ml posttreatment, but there is no evidence for this recommendation. The aim of this study was to identify whether abstinence from CISC as a routine strategy for patients with a PVR following intradetrusor botulinum toxin injections is associated with any measurable adversity. This was a cohort observation study. Patients with lower urinary tract symptoms (LUTS) attending a medical urology centre were observed before and after botulinum toxin treatment. Intradetrusal botulinum toxin injections were administered in the day-treatment centre at a medical urology centre in London, UK. Patients were reviewed at follow-up consultations to measure PVR. Of the 240 patients studied, 215 were women and 25 were men, of whom, 196 (82%) received botulinum toxin injections and were not managed with CISC; 18% were using CISC prior to injections and continued. None of the 196 patients developed acute retention or significant voiding symptoms. Our study indicates that routine administration of CISC based on an arbitrary PVR volume is unlikely to confer benefit. In order to avoid patients being deterred from botulinum treatment, we recommend that CISC be reserved for those who have troublesome voiding symptoms as well as a raised PVR. It is unlikely that CISC, initiated on the basis of an arbitrary PVR volume, would benefit the patient.

Perception drives the evolution of observable traits.

Bats choose flowers on the basis of nectar volume and concentration, affecting how the flowers evolve

Prognostic significance of tumor volume as determined on 3D ultrasound scan in uterine cervix cancer treated by radiotherapy.

The aim of this prospective study is to evaluate prognostic significance of tumor volume determined by three-dimensional (3D) ultrasound scan in uterine cervix cancer patients treated by radiotherapy. A total of 67 patients of Stage IB2-IIIB were studied and analyzed. Cervical tumor volume was determined by 3D ultrasound scan. Two groups were made on the basis of volume on ultrasound scan (Group 1 <40 cc = 36 and Group 2 >40 cc = 31). Both groups received external beam radiotherapy (EBRT) and intracavitary radiation therapy (ICRT). Cisplatin 40 mg/m 2 every week was given concurrently with external irradiation. Tumor volumes were taken by 3D USG every week during EBRT, after each fraction of ICRT, and after 8 weeks of completion of treatment. Primary end point was disease-free survival (DFS), and secondary endpoints were 5-year survival and toxicities. After 2 months of completion of treatment, 1 out of 36 patients of Group A was having residual and 7 out of 31 of Group B were having residual diseases (P = 0.034). DFS and 5-year survival were significantly different in the groups (log rank test P = 0.0014, hazard ratio (HR) =2.3622 95% confidence interval (CI) 1.3090-4.2625 and P = 0.0421, HR = 1.9274 95% CI 0.9998-3.7156, respectively). Ultrasound is a cheap, simple, and useful in predicting the outcome of treatment and DFS based on the tumor volume.

Comprehensive Analysis &amp; Performance Comparison of Clustering Algorithms for Big Data

21st Century has marked high velocity of data generation not only in terms of size but also in variety. Analyzing large data sets with different forms is also a challenging task. Data Mining is regarded as efficient method to extract meaningful information as per user requirements. But considering the size of modern data, traditional data mining techniques are failing. Clustering can be regarded as one of the most important technique to mine the data by splitting large data sets into clusters. The paper’s primary contribution is to provide comprehensive analysis of Big Data Clustering algorithms on basis of: Partitioning, Hierarchical, Density, Grid and Model. In addition to this, performance comparison of algorithms is performed on basis of volume, variety and velocity.

Introduction of pruning based on measures of association in the expansion phase of the induction algorithm CART: a case study of pre-university orientation for Sidi Mohamed Ben Abdelah University

Determining the right size of the tree is a crucial operation in the construction of a decision tree on the basis of a large volume of data. It largely determines its performance during its deployment in the population. This, in fact, considers the avoidance of two extremes: the sub-study, defined by a reduced tree, poorly capturing relevant information of the learning data; the over-learning, defined by an exaggerated size of the tree, capturing the specifics of the learning data, characteristics that can not be transposed in the population. In both cases, we have a less performing prediction model. This paper presents an approach of indirect pre-pruning introduced within the algorithm classification and regression tree (CART) expansion phase; it is based on the rules generated from the decision tree and uses validation criteria inspired from the data mining techniques to discover association rules.

基于正交试验法的大跨连续刚构桥主梁设计参数影响研究

对某连续刚构桥的主梁截面参数中的主跨0号块梁高高跨比、主跨跨中梁高高跨比、梁底抛物线次数参数在适用范围内选择取值，应用正交试验法对所选择的参数进行组合和数值建模计算，得到了综合性能较好的设计参数组合形式。采用极差分析的方法研究了以主梁跨中应力、挠度和全桥混凝土用量为综合指标的各参数的影响程度。研究表明：主跨跨中梁高高跨比对综合性能指标影响最大，梁底抛物线次数，根部梁高高跨比的影响较小，其中梁底抛物线次数对主梁综合性能的影响稍大于0号块梁高高跨比。 The design parameters, central beam high-span ratio, high-span ratio at root of the beam and beam bottom curve line, of continuous rigid frame bridge girder were valued in an appropriate range. Based on orthogonal experiment and numerical simulation, the effects of above parameters to the comprehensive performance index on the basis of stress, deflection and concrete volume were studied by the parameters combinations and the calculation of the text models. The result shows that the central beam high-span ratio has the greatest impact on the comprehensive performance index, while the high-span ratio at root of the beam and the beam bottom curve line have less influence. In addition, the impact of the beam bottom curve line is larger than the high-span ratio at root of the beam.

Introduction of pruning based on measures of association in the expansion phase of the induction algorithm CART: a case study of pre-university orientation for Sidi Mohamed Ben Abdelah University

Determining the right size of the tree is a crucial operation in the construction of a decision tree on the basis of a large volume of data. It largely determines its performance during its deployment in the population. This, in fact, considers the avoidance of two extremes: the sub-study, defined by a reduced tree, poorly capturing relevant information of the learning data; the over-learning, defined by an exaggerated size of the tree, capturing the specifics of the learning data, characteristics that can not be transposed in the population. In both cases, we have a less performing prediction model. This paper presents an approach of indirect pre-pruning introduced within the algorithm classification and regression tree (CART) expansion phase; it is based on the rules generated from the decision tree and uses validation criteria inspired from the data mining techniques to discover association rules.

Release of Growth Factors into Root Canal by Irrigations in Regenerative Endodontics

IntroductionThe aim of this study was to investigate the release of growth factors into root canal space after the irrigation procedure of regenerative endodontic procedure. MethodsSixty standardized root segments were prepared from extracted single-root teeth. Nail varnish was applied to all surfaces except the root canal surface. Root segments were irrigated with 1.5% NaOCl + 17% EDTA, 2.5% NaOCl + 17% EDTA, 17% EDTA, or deionized water. The profile of growth factors that were released after irrigation was studied by growth factor array. Enzyme-linked immunosorbent assay was used to validate the release of transforming growth factor (TGF)-β1 and basic fibroblast growth factor (bFGF) at 4 hours, 1 day, and 3 days after irrigation. The final concentrations were calculated on the basis of the root canal volume measured by cone-beam computed tomography. Dental pulp stem cell migration on growth factors released from root segments was measured by using Transwell assay. ResultsTotal of 11 of 41 growth factors were detected by growth factors array. Enzyme-linked immunosorbent assay showed that TGF-β1 was released in all irrigation groups. Compared with the group with 17% EDTA (6.92 ± 4.49 ng/mL), the groups with 1.5% NaOCl + 17% EDTA and 2.5% NaOCl + 17% EDTA had significantly higher release of TGF-β1 (69.04 ± 30.41 ng/mL and 59.26 ± 3.37 ng/mL, respectively), with a peak release at day 1. The release of bFGF was detected at a low level in all groups (0 ng/mL to 0.43 ± 0.22 ng/mL). Migration assay showed the growth factors released from root segments induced dental pulp stem cell migration. ConclusionsThe root segment model in present study simulated clinical scenario and indicated that the current irrigation protocol released a significant amount of TGF-β1 but not bFGF. The growth factors released into root canal space induced dental pulp stem cell migration.

Two adjacent phenylalanines in the NMDA receptor GluN2A subunit M3 domain interactively regulate alcohol sensitivity and ion channel gating

The N-methyl-d-aspartate (NMDA) receptor is a key target of ethanol action in the central nervous system. Alcohol inhibition of NMDA receptor function involves small clusters of residues in the third and fourth membrane-associated (M) domains. Previous results from this laboratory have shown that two adjacent positions in the M3 domain, F636 and F637, can powerfully regulate alcohol sensitivity and ion channel gating. In this study, we report that these positions interact with one another in the regulation of both NMDA receptor gating and alcohol action. Using dual mutant cycle analysis, we detected interactions among various substitution mutants at these positions with respect to regulation of glutamate EC50, steady-state to peak current ratios (Iss:Ip), mean open time, and ethanol IC50. This interaction apparently involves a balancing of forces on the M3 helix, such that the disruption of function due to a substitution at one position can be reversed by a similar substitution at the other position. For example, tryptophan substitution at F636 or F637 increased or decreased channel mean open time, respectively, but tryptophan substitution at both positions did not alter open time. Interestingly, the effects of a number of mutations on receptor kinetics and ethanol sensitivity appeared to depend upon subtle structural differences, such as those between the isomeric amino acids leucine and isoleucine, as they could not be explained on the basis of sidechain molecular volume or hydrophilicity.

Glomerular hyperfiltration in children with cancer: prevalence and a hypothesis.

Glomerular hyperfiltration has recently been reported in children with malignancies and has been attributed to increased solute from breakdown of tumor tissues. To evaluate the prevalence of hyperfiltration in the pediatric oncology population and explore its pathophysiological mechanism. Tc-99m diethylenetriaminepentaacetic acid (DTPA) glomerular filtration rate (GFR) examinations (437 studies) and medical records of 177 patients <21years of age diagnosed with a malignancy between January 2005 and October 2013 were retrospectively reviewed. Hyperfiltration was defined as a GFR ≥ 160 ml/min/1.73m2. Seventy-seven (43.5%) patients had hyperfiltration in at least one GFR exam. A significantly higher percentage of patients with central nervous system (CNS) tumors (63.6%) had hyperfiltration when compared to other tumor types (27.3%, P < 0.001). No association was found between hyperfiltration and age, gender, race or bone marrow involvement. There was a significant trend toward decreasing hyperfiltration after the second cycle of chemotherapy (P = 0.006) and a significant increase in subjects with low GFR (<100ml/min/1.73m2) with increasing number of cycles of chemotherapy (P = 0.005). Glomerular hyperfiltration is common in children with malignancies at diagnosis and during initial cycles of chemotherapy. It is particularly prevalent in patients with central nervous tumors, which are frequently smaller in volume. Therefore, the pathophysiological mechanism of hyperfiltration cannot be explained solely on the basis of large tumor volume and subsequent cell breakdown. We hypothesize that host hypermetabolic state plays an important role in pathophysiology of hyperfiltration.

Case Studies in Physiology: The Case of the Giant Giraffe.

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Rationale and design of the Progression of AtheRosclerotic PlAque DetermIned by Computed TomoGraphic Angiography IMaging (PARADIGM) registry: A comprehensive exploration of plaque progression and its impact on clinical outcomes from a multicenter serial coronary computed tomographic angiography study

The natural history of coronary artery disease (CAD) in patients with low-to-intermediate risk is not well characterized. Although earlier invasive serial studies have documented the progression of atherosclerotic burden, most were focused on high-risk patients only. The PARADIGM registry is a large, prospective, multinational dynamic observational registry of patients undergoing serial coronary computed tomographic angiography (CCTA). The primary aim of PARADIGM is to characterize the natural history of CAD in relation to clinical and laboratory data. The PARADIGM registry (ClinicalTrials.govNCT02803411) comprises ≥2,000 consecutive patients across 9 cluster sites in 7 countries. PARADIGM sites were chosen on the basis of adequate CCTA volume, site CCTA proficiency, local demographic characteristics, and medical facilities to ensure a broad-based sample of patients. Patients referred for clinically indicated CCTA will be followed up and enrolled if they had a second CCTA scan. Patients will also be followed up beyond serial CCTA performance to identify adverse CAD events that include cardiac and noncardiac death, myocardial infarction, unstable angina, target vessel revascularization, and CAD-related hospitalization. The results derived from the PARADIGM registry are anticipated to add incremental insight into the changes in CCTA findings in accordance with the progression or regression of CAD that confer prognostic value beyond demographic and clinical characteristics.

Use of rhenium-188 for in vivo imaging and treatment of human cervical cancer cells transfected with lentivirus expressing sodium iodide symporter.

Although survival rates for cervical cancer have improved, they need further improvement in patients with distant metastases. The sodium iodine symporter (NIS) gene has often been used in cancer therapy and imaging. We examined the therapeutic effects of rhenium-188 (188Re) in a cervical cancer xenograft model expressing the NIS gene under the control of the tumor-specific human telomerase reverse transcriptase (hTERT) promoter. We constructed two recombinant lentiviral vectors expressing enhanced green fluorescent protein (eGFP) or the NIS gene driven by the hTERT promoter. To determine the tumor-specific transcriptional activity of the hTERT promoter, the eGFP-expressing vector was stably transfected into tumor cells and normal cells. A cervical cancer HeLa cell line stably expressing NIS (HeLa-TERTNIS) was created and examined in a similar way. HeLa and HeLa-TERTNIS tumor xenografts were transplanted in nude mice, and invivo 188Re distribution was measured using micro-SPECT/CT imaging. The therapeutic effects of 188Re were assessed over 21 days on the basis of tumor volume and the immunohistochemical findings of excised tumors. eGFP expression controlled by the hTERT promoter was substantially higher in the tumor cells than normal cells. Quantitative PCR and western blotting confirmed that HeLa-TERTNIS cells expressed high levels of NIS mRNA and protein, respectively. Further, 188Re uptake and accumulation were significantly higher in HeLa-TERTNIS cells and xenografts than HeLa cells and xenografts. Invitro and invivo, 188Re significantly reduced the survival of HeLa-TERTNIS cells and inhibited the growth of HeLa-TERTNIS xenografts, respectively. Immunohistochemical staining showed that HeLa-TERTNIS xenograft tumors expressed higher levels of NIS and caspase-3 and lower levels of Ki-67 than HeLa xenograft tumors. Our findings indicated that hTERT promoter-driven expression of the NIS gene in HeLa cells led to 188Re uptake and therapeutic effects. Thus, NIS-based gene therapy and imaging using the hTERT promoter and 188Re may be possible.

Plasmonic Purcell factor and coupling efficiency to surface plasmons. Implications for addressing and controlling optical nanosources

The Purcell factor Fp is a key quantity in cavity quantum electrodynamics (cQED) that quantifies the coupling rate between a dipolar emitter and a cavity mode. Its simple form unravels the possible strategies to enhance and control light–matter interaction. Practically, efficient light–matter interaction is achieved thanks to either (i) high quality factor Q at the basis of cQED or (ii) low modal volume V at the basis of nanophotonics and plasmonics. In the last decade, strong efforts have been done to derive a plasmonic Purcell factor in order to transpose cQED concepts to the nanocale, in a scale-law approach. In this work, we discuss the plasmonic Purcell factor for both delocalized (SPP) and localized (LSP) surface-plasmon-polaritons and briefly summarize the expected applications for nanophotonics. On the basis of the SPP resonance shape (Lorentzian or Fano profile), we derive closed form expression for the coupling rate to delocalized plasmons. The quality factor factor and modal confinement of both SPP and LSP are quantified, demonstrating their strongly subwavelength behavior.