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1.
Animal ; 18(4): 101114, 2024 Apr.
Article in English | MEDLINE | ID: mdl-38471266

ABSTRACT

Cooling down is essential for horse recovery before veterinary inspection during an endurance ride. As salt potentially decreases water temperature, we tested whether adding salt to the water used to cool horses could aid their recovery. Twelve healthy Arabian horses participating in a novice endurance ride were divided evenly into two groups. Heart rate variability (HRV) variables, including time and frequency domains, non-linear results, and autonomic nervous system indices, were determined before recovery and at 1-min intervals for 9 min during recovery using either cold or cold-saline water. An interaction between water type and time was observed in the modulation of the SD of beat-to-beat (RR) intervals, square root of the mean squared differences between successive RR intervals (RMSSD), HRV triangular index, very low-frequency band (VLF), low-frequency band/high-frequency band ratio, and SD of the Poincaré plot perpendicular to the line of identity (SD1) non-linear results. A decrease in heart rate and the sympathetic nervous system index corresponding to an increase in RR intervals and the parasympathetic nervous system (PNS) index was observed over time. A rise in the triangular interpolation of the normal-to-normal intervals, number of successive RR interval pairs that differ more than 50 ms, low-frequency band, and total power, coinciding with decreased stress index, was detected at 9 min of recovery. A difference between RMSSD and SD1 was observed between groups, in which they were higher in horses cooling with cold-saline water when compared to cold water at 5 min after cooling began. An increase in VLF was seen at 9 min only in horses cooled with cold-saline water. In conclusion, different water types distinctly impacted HRV in horses. The predominant PNS activity in horses recovering with cold-saline water reflects its positive impact on cooling during an endurance ride.


Subject(s)
Autonomic Nervous System , Cold Temperature , Syndactyly , Horses , Animals , Autonomic Nervous System/physiology , Heart Rate/physiology
2.
Article in English | MEDLINE | ID: mdl-37807947

ABSTRACT

Arrhythmic heartbeat classification has gained a lot of attention to accelerate the detection of cardiovascular diseases and mitigating the potential cause of one-third of deaths worldwide. In this article, a computer-aided diagnostic (CAD) approach has been proposed for the automated identification and classification of arrhythmic heartbeats from electrocardiogram (ECG) signals using multiple features aided supervised learning model. For proper diagnosis of arrhythmic heartbeats, MIT-BIH Arrhythmia database has been used to train and test the proposed approach. The ECG signals, extracted from sensor leads, have undergone pre-processing via discrete wavelet transform. Three sets of features, i.e. statistical, temporal, and spectral, are extracted from the processed ECG signals followed by random forest aided recursive feature elimination strategy to select the prominent features for proper classification of arrhythmic heartbeats by the proposed optimal extreme gradient boosting (O-XGBoost) classifier. Hyperparameters such as learning rate, tree-specific parameters, and regularization parameters have been optimized to improve the performance of the XGBoost classifier. Moreover, the synthetic minority over-sampling technique has been employed for balancing the dataset in order to improve the classification performance. Quantitative results reveal the remarkable performance over state-of-the-art methods. The proposed model can be implemented in any computer-aided diagnostic system with similar topological structures.

3.
BMC Public Health ; 21(1): 1517, 2021 08 06.
Article in English | MEDLINE | ID: mdl-34362321

ABSTRACT

BACKGROUND: There is a strong policy impetus for the One Health cross-sectoral approach to address the complex challenge of zoonotic diseases, particularly in low/lower middle income countries (LMICs). Yet the implementation of this approach in LMIC contexts such as India has proven challenging, due partly to the relatively limited practical guidance and understanding on how to foster and sustain cross-sector collaborations. This study addresses this gap by exploring the facilitators of and barriers to successful convergence between the human, animal and environmental health sectors in India. METHODS: A mixed methods study was conducted using a detailed content review of national policy documents and in-depth semi-structured interview data on zoonotic disease management in India. In total, 29 policy documents were reviewed and 15 key informant interviews were undertaken with national and state level policymakers, disease managers and experts operating within the human-animal-environment interface of zoonotic disease control. RESULTS: Our findings suggest that there is limited policy visibility of zoonotic diseases, although global zoonoses, especially those identified to be of pandemic potential by international organisations (e.g. CDC, WHO and OIE) rather than local, high burden endemic diseases, have high recognition in the existing policy agenda setting. Despite the widespread acknowledgement of the importance of cross-sectoral collaboration, a myriad of factors operated to either constrain or facilitate the success of cross-sectoral convergence at different stages (i.e. information-sharing, undertaking common activities and merging resources and infrastructure) of cross-sectoral action. Importantly, participants identified the lack of supportive policies, conflicting departmental priorities and limited institutional capacities as major barriers that hamper effective cross-sectoral collaboration on zoonotic disease control. Building on existing informal inter-personal relationships and collaboration platforms were suggested by participants as the way forward. CONCLUSION: Our findings point to the importance of strengthening existing national policy frameworks as a first step for leveraging cross-sectoral capacity for improved disease surveillance and interventions. This requires the contextual adaptation of the One Health approach in a manner that is sensitive to the underlying socio-political, institutional and cultural context that determines and shapes outcomes of cross-sector collaborative arrangements.


Subject(s)
One Health , Animals , Humans , India , Zoonoses/epidemiology , Zoonoses/prevention & control
4.
PLoS Negl Trop Dis ; 14(4): e0008179, 2020 04.
Article in English | MEDLINE | ID: mdl-32255797

ABSTRACT

Zoonotic diseases affect resource-poor tropical communities disproportionately, and are linked to human use and modification of ecosystems. Disentangling the socio-ecological mechanisms by which ecosystem change precipitates impacts of pathogens is critical for predicting disease risk and designing effective intervention strategies. Despite the global "One Health" initiative, predictive models for tropical zoonotic diseases often focus on narrow ranges of risk factors and are rarely scaled to intervention programs and ecosystem use. This study uses a participatory, co-production approach to address this disconnect between science, policy and implementation, by developing more informative disease models for a fatal tick-borne viral haemorrhagic disease, Kyasanur Forest Disease (KFD), that is spreading across degraded forest ecosystems in India. We integrated knowledge across disciplines to identify key risk factors and needs with actors and beneficiaries across the relevant policy sectors, to understand disease patterns and develop decision support tools. Human case locations (2014-2018) and spatial machine learning quantified the relative role of risk factors, including forest cover and loss, host densities and public health access, in driving landscape-scale disease patterns in a long-affected district (Shivamogga, Karnataka State). Models combining forest metrics, livestock densities and elevation accurately predicted spatial patterns in human KFD cases (2014-2018). Consistent with suggestions that KFD is an "ecotonal" disease, landscapes at higher risk for human KFD contained diverse forest-plantation mosaics with high coverage of moist evergreen forest and plantation, high indigenous cattle density, and low coverage of dry deciduous forest. Models predicted new hotspots of outbreaks in 2019, indicating their value for spatial targeting of intervention. Co-production was vital for: gathering outbreak data that reflected locations of exposure in the landscape; better understanding contextual socio-ecological risk factors; and tailoring the spatial grain and outputs to the scale of forest use, and public health interventions. We argue this inter-disciplinary approach to risk prediction is applicable across zoonotic diseases in tropical settings.


Subject(s)
Disease Outbreaks , Kyasanur Forest Disease/epidemiology , Zoonoses/epidemiology , Animal Distribution , Animals , Biodiversity , Disease Susceptibility , Forests , Humans , India/epidemiology , Population Density , Risk Factors , Spatial Regression
5.
Sci Rep ; 9(1): 4229, 2019 03 12.
Article in English | MEDLINE | ID: mdl-30862821

ABSTRACT

Culicoides-borne arboviruses of livestock impair animal health, livestock production and livelihoods worldwide. As these arboviruses are multi-host, multi-vector systems, predictions to improve targeting of disease control measures require frameworks that quantify the relative impacts of multiple abiotic and biotic factors on disease patterns. We develop such a framework to predict long term (1992-2009) average patterns in bluetongue (BT), caused by bluetongue virus (BTV), in sheep in southern India, where annual BT outbreaks constrain the livelihoods and production of small-holder farmers. In Bayesian spatial general linear mixed models, host factors outperformed landscape and climate factors as predictors of disease patterns, with more BT outbreaks occurring on average in districts with higher densities of susceptible sheep breeds and buffalo. Since buffalo are resistant to clinical signs of BT, this finding suggests they are a source of infection for sympatric susceptible sheep populations. Sero-monitoring is required to understand the role of buffalo in maintaining BTV transmission and whether they must be included in vaccination programs to protect sheep adequately. Landscape factors, namely the coverage of post-flooding, irrigated and rain-fed croplands, had weak positive effects on outbreaks. The intimate links between livestock host, vector composition and agricultural practices in India require further investigation at the landscape scale.


Subject(s)
Bluetongue virus , Bluetongue , Buffaloes/virology , Disease Outbreaks , Livestock/virology , Animals , Bluetongue/epidemiology , Bluetongue/transmission , India/epidemiology , Models, Biological , Seroepidemiologic Studies , Sheep/virology
6.
Transbound Emerg Dis ; 64(6): 1912-1917, 2017 Dec.
Article in English | MEDLINE | ID: mdl-28004522

ABSTRACT

Bluetongue is endemic in India and has been reported from most Indian states. Of late, the clinical disease is most frequently seen in the states of Andhra Pradesh, Telangana (erstwhile Andhra Pradesh state), Tamil Nadu and Karnataka. Our analysis of diagnostic samples from bluetongue outbreaks during 2010-2011 from the state of Karnataka identified bluetongue virus (BTV) serotype 5 (BTV-5) for the first time in India. One of the diagnostic samples (CH1) and subsequent virus isolate (IND2010/02) contained both BTV-2 and BTV-5. Segment 2 (seg-2) sequence data (400 bp: nucleotides 2538-2921) for IND2010/02-BTV5, showed 94.3% nucleotide identity to BTV-5 from South Africa (Accession no. AJ585126), confirming the virus serotype and also indicating that Seg-2 was derived from a Western topotype, which is in contrast to serotype 2, that belongs to an Eastern topotype. BTV-5 has been recently reported from Africa, China, French islands and the Americas. Although the exact source of the Indian BTV-5 isolate is still to be confirmed, recent identification of additional exotic serotypes in India is of real concern and might add to the severity of the disease seen in these outbreaks.


Subject(s)
Bluetongue virus/immunology , Bluetongue/virology , Disease Outbreaks/veterinary , Animals , Bluetongue/epidemiology , Bluetongue virus/genetics , Bluetongue virus/isolation & purification , Chick Embryo , Coinfection/veterinary , Cricetinae , India/epidemiology , Phylogeny , Sequence Analysis, DNA/veterinary , Serogroup , Sheep
7.
FASEB J ; 24(8): 2951-61, 2010 Aug.
Article in English | MEDLINE | ID: mdl-20371631

ABSTRACT

D-serine is thought to be a glia-derived transmitter that activates N-methyl D-aspartate receptors (NMDARs) in the brain. Here, we investigate the pathways for D-serine release using primary cultures, brain slices, and in vivo microdialysis. In contrast with the notion that D-serine is exclusively released from astrocytes, we found that D-serine is released by neuronal depolarization both in vitro and in vivo. Veratridine (50 microM) or depolarization by 40 mM KCl elicits a significant release of endogenous D-serine from primary neuronal cultures. Controls with astrocyte cultures indicate that glial cells are insensitive to veratridine, but release D-serine mainly by the opening of volume-regulated anion channels. In cortical slices perfused with veratridine, endogenous D-serine release is 10-fold higher than glutamate receptor-evoked release. Release of D-serine from slices does not require internal or external Ca(2+), suggesting a nonvesicular release mechanism. To confirm the neuronal origin of D-serine, we selectively loaded neurons in cortical slices with D-[(3)H]serine or applied D-alanine, which specifically releases D-serine from neurons. Depolarization with veratridine promotes D-serine release in vivo monitored by high temporal resolution microdialysis of the striatum. Our data indicate that the neuronal pool of D-serine plays a major role in D-serine dynamics, with implications for the regulation of NMDAR transmission.


Subject(s)
Brain/cytology , Neurons/metabolism , Serine/metabolism , Action Potentials , Animals , Astrocytes/cytology , Brain Chemistry , Cells, Cultured , Neurons/cytology , Neurotransmitter Agents , Rats , Rats, Sprague-Dawley , Receptors, N-Methyl-D-Aspartate/metabolism , Veratridine/pharmacology
8.
Neuroscience ; 164(4): 1422-30, 2009 Dec 29.
Article in English | MEDLINE | ID: mdl-19786078

ABSTRACT

Male rats that copulate to ejaculation with female rats bearing an odor show a learned preference to ejaculate selectively with females that bear the odor. This conditioned ejaculatory preference reflects an association between the odor and the reward state induced by ejaculation. Although little is known about the neuronal mechanisms that mediate this form of learning, convergence of genitosensory and olfactory inputs occurs in both hypothalamic and cortical regions, notably within primary olfactory (piriform) cortex, which may be involved in the encoding or storage of the association. The present study contrasted the ability of genital investigations, mounts, intromissions, ejaculations, and a sexually conditioned olfactory stimulus, to enhance evoked synaptic field potentials in the piriform cortex. Rats in the Paired group underwent conditioning trials in which they copulated with sexually receptive females bearing an almond odor. Rats in the Unpaired control group copulated with receptive females bearing no odor. Responses in the piriform cortex evoked by electrical stimulation of the olfactory bulb were recorded in male rats as they engaged in different aspects of sexual behavior, and were also recorded after conditioning, during exposure to cotton swabs bearing the almond odor. The monosynaptic component of responses was increased during intromission and ejaculation, and the late component of responses was increased during anogenital sniffing and mounting (with or without intromission). However, no differences in the amplitudes of evoked responses were found between the Paired and Unpaired groups, and no differences in synaptic responses were found during presentation of the odor after conditioning. These data indicate that short-term alterations in synaptic responsiveness occur in piriform cortex as a function of sexual stimulation in the male rat, but that responses are not significantly altered by a conditioned odor.


Subject(s)
Olfactory Pathways/physiology , Sexual Behavior, Animal , Synapses/physiology , Animals , Electric Stimulation , Evoked Potentials , Female , Male , Odorants , Olfactory Bulb/physiology , Rats , Rats, Long-Evans
9.
Neurosci Lett ; 393(2-3): 200-5, 2006 Jan 30.
Article in English | MEDLINE | ID: mdl-16266784

ABSTRACT

Online microdialysis-capillary electrophoresis (CE) was used to measure the changes in extracellular D-serine concentration in response to the application of glutamate agonists and antagonists in the rat striatum. The microdialysis-CE assay was capable of measuring concentration changes as small as 8% with a sampling rate of 12-15s. Kainic acid (KA) induced increases in D- and L-serine concentrations. Application of the non-NMDA receptor antagonist CNQX did not affect the increases observed for D- or L-serine, suggesting a nonspecific effect. NMDA also induced increases in D-serine, L-serine, glutamate and GABA concentrations. These increases were attenuated by the NMDA receptor antagonist MK-801.


Subject(s)
Corpus Striatum/drug effects , Electrophoresis, Capillary , Excitatory Amino Acid Agonists/pharmacology , Microdialysis/instrumentation , Serine/metabolism , Animals , Corpus Striatum/metabolism , Dose-Response Relationship, Drug , Drug Interactions , Excitatory Amino Acid Antagonists/pharmacology , Extracellular Space/drug effects , Glutamic Acid/metabolism , Male , Online Systems , Rats , Rats, Sprague-Dawley , Time Factors , gamma-Aminobutyric Acid/metabolism
10.
Anal Chem ; 76(22): 6582-7, 2004 Nov 15.
Article in English | MEDLINE | ID: mdl-15538780

ABSTRACT

D-Serine was detected in dialysate collected from the rat striatum using an online microdialysis-CE-LIF instrument. Dialysate can be analyzed every 12.5 s using the online instrument, giving much better temporal resolution than previously possible for D-serine. Basal concentrations of D-serine (8 +/- 2 microM), glutamate (0.8 +/- 0.2 microM), GABA (0.11 +/- 0.04 microM), and L-serine (23 +/- 4 microM) were measured. Increases in the concentrations of these neurochemicals induced by the introduction of high-K+ aCSF were quantitated. Notably, an increase in D-serine concentration in response to high-K+ aCSF was observed for the first time. The identity of the D-serine peak was confirmed unambiguously using D-amino acid oxidase to selectively remove D-serine from a dialysate sample. The microdialysis-CE-LIF instrument was able to monitor this enzymatic reaction as it proceeded over a period of 60 min, demonstrating that online microdialysis-CE-LIF is not only useful in monitoring in vivo dynamics but can also be used to monitor other chemical systems.


Subject(s)
Brain/metabolism , Electrophoresis, Capillary/methods , Microdialysis , Serine/metabolism , Animals , Rats
11.
Anal Chem ; 75(1): 8-15, 2003 Jan 01.
Article in English | MEDLINE | ID: mdl-12530812

ABSTRACT

Doxorubicin (DOX) treatment of NS-1 mouse hybridoma cells results in the formation of zeptomole amounts of metabolites per cell that are difficult to determine by confocal microscopy or HPLC. The native fluorescence of DOX and its metabolites together with laser-induced fluorescence detection (HF) has previously been used to detect a maximum of four components. In this study, we use capillary electrophoresis with postcolumn LIF (CE-LIF) to separate and detect 12 components attributed to DOX metabolism, resulting from treatment of NS-1 cells with 25 microM DOX for 8 h. The so-called metabolites 8 and 10 have been identified as doxorubicinone (DOXone) and 7-deoxydoxorubicinone (7-deoxyDOXone), respectively, by comigration with the corresponding synthetic standard. Due to comigration of DOX with doxorubicinol (DOXone), the presence of DOXone had to be determined separately by matrix-assisted laser desorption/ionization time-of-flight mass spectrometry. The rest of the metabolites remain unidentified and are referred to by their number assignment. In comparison with the whole cell lysate, fractionation by differential centrifugation results in a better separation resolution of metabolites due to reduced amounts of metabolites in each fraction. This approach was chosen to compare the distribution of 13 metabolites in three subcellular fractions that form a pellet at < 1,400 g, 1,400-14,000 g, and > 14, 000 g and that generically are enriched in nuclei, organelles (mitochondria and lysosomes), and cytosolic components, respectively. The most abundant metabolite, DOXone, was estimated to be 90 +/- 15, 18 +/- 2, and 60 +/- 12 amol/cell (n = 5) in the nuclear-enriched, organelle-enriched, and cytosole-enriched fractions, respectively. In contrast, the total amount of other metabolites in a given fraction varied from 0 to 1,300 zmol. 7-DeoxyDOXone is the only metabolite that was present at similar levels in the three fractions. Other salient observations are metabolites 3, 7, and 11 are not detectable in the nuclear-enriched, organelle-enriched, and cytosole-enriched fractions, respectively; metabolite 9 and DOXone are more abundant in the nuclear-enriched fraction than in the other two fractions. The observations presented here suggest that subcellular fractionation followed by CE-LIF could be a powerful diagnostic for monitoring drug distribution, which is highly relevant to DOX cytoxicity studies.


Subject(s)
Doxorubicin/chemistry , Doxorubicin/metabolism , Electrophoresis, Capillary/methods , Lasers , Subcellular Fractions/chemistry , Animals , Cell Extracts , Cell Line , Doxorubicin/pharmacology , Fluorescence , Mice , Molecular Structure , Reproducibility of Results , Spectrometry, Mass, Matrix-Assisted Laser Desorption-Ionization , Subcellular Fractions/drug effects
12.
Article in English | MEDLINE | ID: mdl-12524123

ABSTRACT

Both steady state and time resolved spectroscopic measurements reveal that the prime process involved in quenching mechanism of the lowest excited singlet (S1) and triplet (T1) states of the well known electron acceptor 9-Cyanoanthracene (9CNA) in presence of 5,6,7,8-tetrahydro-1-naphthol (TH1N) or 5,6,7,8-tetrahydro-2-naphthol (TH2N) is H-bonding interaction. It has been confirmed that the fluorescence of 9CNA is not at all affected in presence of 5,6,7,8-tetrahydro-2-methoxy naphthalene (TH2MN) both in non-polar n-heptane (NH) and highly polar acetonitrile (ACN) media. This indicates that the H-bonding interaction is crucial for the occurrence of the quenching phenomenon observed in the present investigations with TH1N (or TH2N) donors and 9CNA acceptor. In ACN solvent both contact ion-pair (CIP) and solvent-separated (or dissociated) ions are formed due to intermolecular H-bonding interactions in the excited electronic states (both singlet and triplet). In NH environment due to stronger H-bonding interactions, the large proton shift within excited charge transfer (CT) or ion-pair complex, 1 or 3(D+-H...A-), causes the formation of the neutral radical, 3(D+H-A)*, due to the complete detachment of the H-atom. It is hinted that both TH1N and TH2N due to their excellent H-bonding ability could be used as antioxidants.


Subject(s)
Anthracenes/chemistry , Naphthols/chemistry , Electrochemistry , Electron Transport , Hydrogen Bonding , Photochemistry , Photolysis , Spectrometry, Fluorescence , Spectrophotometry
13.
Contraception ; 62(2): 105-6, 2000 Aug.
Article in English | MEDLINE | ID: mdl-11102595

ABSTRACT

Laminaria tents are commonly placed intracervically prior to elective termination of pregnancy. Three women, each of whom had undergone at least one previous abortion in which a laminaria was utilized, developed hypersensitivity reactions following laminaria placement. The reactions included urticaria, angioedema and respiratory distress. All responded to removal of the laminaria and administration of either diphenhydramine, prednisone, inhaled bronchodilators or subcutaneous epinephrine. One of the women subsequently underwent skin testing and was positive to laminaria. Patients undergoing laminaria placement may manifest a Type I reaction, IgE-mediated sensitivity. Providers should counsel patients with histories of multiple previous laminaria insertions about this possibility, have alternative methods of cervical dilation available, and be able to promptly recognize and treat reactions when they occur.


Subject(s)
Abortion, Induced/methods , Hypersensitivity/etiology , Laminaria , Adult , Anti-Allergic Agents/therapeutic use , Anti-Inflammatory Agents/therapeutic use , Bronchodilator Agents/therapeutic use , Canada , Diphenhydramine/therapeutic use , Epinephrine/therapeutic use , Female , Humans , Hypersensitivity/drug therapy , Prednisone/therapeutic use , Pregnancy
14.
J Pediatr Adolesc Gynecol ; 13(2): 71-4, 2000 May.
Article in English | MEDLINE | ID: mdl-10869966

ABSTRACT

A case is presented in which an unusual, phallic-shaped perineal lipoma raised the question of ambiguous genitalia following the delivery of an otherwise healthy female infant. The management of the case is described, and the critical features of the physical examination that contradicted that diagnosis are highlighted.


Subject(s)
Genital Neoplasms, Female/diagnosis , Genitalia, Female/abnormalities , Lipoma/diagnosis , Diagnosis, Differential , Female , Genital Neoplasms, Female/pathology , Humans , Infant, Newborn , Lipoma/pathology , Perineum/pathology
15.
Article in English | MEDLINE | ID: mdl-20877064

ABSTRACT

A 12-year old boy had a bluish black nodule since birth. At the age of 10, the lesion become warty following a trauma. Diagnosis was made on histopathological examination.

17.
Article in English | MEDLINE | ID: mdl-20952985

ABSTRACT

Fifteen patients with primary localised cutaneous amyloidosis (PLCA), of which 8 had macular amyloidosis (MA) and 7 lichen amyloidosis (LA), received oral colchicine 1 mg/day in 2 divided doses for a period of 3 months. Pruritus completely disappeared in all MA patients and 30-60% diminution occurred in LA patients within 15 days. Flattening of the papules and diminution in thickness of the skin also started within one month in all LA patients, within 90 days of therapy pigmentation almost disappeared in ail patients of MA and size of papuies decreased by 80-98% in all LA patients. No significant side effect was seen in these patients due to colchicine therapy.

19.
s.l; s.n; jan. 1987. 3 p.
Non-conventional in English | Sec. Est. Saúde SP, HANSEN, Hanseníase Leprosy, SESSP-ILSLACERVO, Sec. Est. Saúde SP | ID: biblio-1240437

ABSTRACT

50 Cases of paucibacillary leprosy was selected for study multi-drug therapy recommended by W.H.O. for sixth months. At the end of six months, 46 cases showed "no clinical activity" and 4 cases showed increased clinical activityweth flaring up of the lesions during treatment.


Subject(s)
Male , Female , Humans , Child , Adult , Middle Aged , Adolescent , Drug Combinations , Dapsone/administration & dosage , Dapsone/therapeutic use , Leprosy/drug therapy , World Health Organization , Rifampin/administration & dosage , Rifampin/therapeutic use
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