Growth and inhibition of monohydrate sodium urate banded spherulites

CrystEngComm ◽  
2021 ◽  
Author(s):  
Yao Zhou ◽  
Xiaowei Feng ◽  
Ting Wang ◽  
Yang Tian ◽  
Xiaoyan Cui
Keyword(s):  
Chronic Arthritis ◽  
Monosodium Urate ◽  
Banded Spherulites ◽  
Sodium Urate ◽  
Crystalline Deposition

Gout is a chronic arthritis arises from the abnormal crystalline deposition of monosodium urate (MSU). Banded spherulites of MSU were widely observed in gout pathological slices (Pascual et al., Nat....

Rapid demonstration of septic or infectious arthritis due to Gram-negative bacteria

1992 ◽  
Vol 50 (1) ◽  
pp. 686-687
Author(s):  
Jacob S. Hanker ◽  
Paul R. Gross ◽  
Beverly L. Giammara
Keyword(s):  
Chronic Arthritis ◽  
Blood Cultures ◽  
Gram Negative Bacteria ◽  
Infectious Arthritis ◽  
Bacterial Arthritis ◽  
Gram Positive ◽  
Gram Negative ◽  
Gram Positive Bacteria

Blood cultures are positive in approximately only 50 per cent of the patients with nongonococcal bacterial infectious arthritis and about 20 per cent of those with gonococcal arthritis. But the concept that gram-negative bacteria could be involved even in chronic arthritis is well-supported. Gram stains are more definitive in staphylococcal arthritis caused by gram-positive bacteria than in bacterial arthritis due to gram-negative bacteria. In the latter situation where gram-negative bacilli are the problem, Gram stains are helpful for 50% of the patients; they are only helpful for 25% of the patients, however, where gram-negative gonococci are the problem. In arthritis due to gram-positive Staphylococci. Gramstained smears are positive for 75% of the patients.

Biostatistical Analysis and Possible Forecasting of Relationship Between Uric Acid and Specific Laboratory Tests in Cases of Gouty Arthritis

2017 ◽  
Vol 68 (6) ◽  
pp. 1234-1241
Author(s):  
Adina Octavia Duse ◽  
Delia Berceanu Vaduva ◽  
Mirela Nicolov ◽  
Cristina Trandafirescu ◽  
Marcel Berceanu Vaduva ◽  
...  
Keyword(s):  
Uric Acid ◽  
Laboratory Tests ◽  
Gouty Arthritis ◽  
Main Diagnosis ◽  
Monosodium Urate ◽  
Glutamate Pyruvate ◽  
Metatarsophalangeal Joints ◽  
The Relationship ◽  
Biostatistical Analysis ◽  
Urate Crystals

Acute gouty arthritis represents an inflammatory response to microcrystals of monosodium urate that precipitate in joint tissues from supersaturated body fluids or are shed from preexisting articular deposits [1]. Gout is a metabolic disease characterized by recurrent episodes of arthritis associated with the presence of monosodium urate crystals in the tissue or synovial fluid during the attack.These forms of crystal-induced arthritis usually affect peripheral joints, including knee, ankle, wrist, and metacarpophalangeal and metatarsophalangeal joints. All of them may be associated with other inflammatory, endocrine diseases [2]. The present study was done to highlight the relationship between increased levels of uric acid and specific laboratory tests in order to possible forecast development of further disease in patients with gouty arthrithis.The present study was done on 34 patients hospitalized in Felix Hospital of Rehabilitation in 2015-2016, with age between 44 and 74, having the main diagnosis of gouty arthritis.We studied the following laboratory tests:urea and other related analysis, like uric acid, creatinine, cholesterol, glutamate pyruvate transaminase and glutamate oxalate transaminase.

Management of Vatarakta w.s.r. to Gout through Panchakarma

2018 ◽  
Vol 3 (4) ◽  
Author(s):  
Dr. Chandramohan Arya ◽  
Dr.Sanjay Gupta
Keyword(s):  
Metabolic Disorders ◽  
Molecular Level ◽  
Modern Science ◽  
Monosodium Urate ◽  
Monosodium Urate Crystals ◽  
Predominant Symptom ◽  
Essential Components ◽  
Unique Approach ◽  
Ayurvedic Treatment ◽  
Urate Crystals

Vatarakta is more distressing and common metabolic disorder prevalent in present era. It is Vatapradhana Tridoshaja Vatavyadhi where Rakta is main Dushya. Vata is a predominant Dosha in Vatarakta, when it is excessively aggravated with vitiated Rakta is called Vatarakta. Vatarakta is correlated with gout in modern science. Gout is an abnormality of purine metabolism causes hyperuricemia and deposition of monosodium urate crystals in joints. Pain is predominant symptom of gout, which disturbs day-today life of the patients. The Panchakarma is not only a important component of Ayurvedic treatment but it is also forms the fundamental basis of Ayurveda therapy. The different procedures like Swedana, Vamana, Virechana, Basti, Sirovirechana, Raktamokshana focus on the purification which detoxifies the human body, i.e. the correction of the metabolism at molecular level. These detoxification procedures are essential components of the management in various metabolic disorders. So Panchakarma is an unique approach in the management of Vatarakta.

The formation of ring-banded spherulites of poly(ɛ-caprolactone) in its miscible mixtures with poly(styrene-co-acrylonitrile)

Polymer ◽  
1997 ◽  
Vol 38 (23) ◽  
pp. 5897-5901 ◽  
Author(s):  
Zhigang Wang ◽  
Xuehui Wang ◽  
Donghong Yu ◽  
Bingzheng Jiang
Keyword(s):  
Banded Spherulites

scholarly journals POS0132 IS THE INTERCRITICAL GOUT REALLY ASYMPTOMATIC? THE INFLAMMATORY ROLE OF THE SILENT URATE CRYSTAL DEPOSITION

2021 ◽  
Vol 80 (Suppl 1) ◽  
pp. 277.1-278
Author(s):  
C. Diaz-Torne ◽  
M. A. Ortiz ◽  
S. Jeria Navarro ◽  
A. Garcia-Gullien ◽  
L. Sainz ◽  
...  
Keyword(s):  
Risk Factors ◽  
Whole Body ◽  
Subclinical Inflammation ◽  
Monosodium Urate ◽  
Crystal Deposition ◽  
Secretome Analysis ◽  
Healthy Donors ◽  
Cytokine Levels ◽  
Urate Crystal ◽  
Crystal Deposit

Background:Gout is the most prevalent inflammatory arthritis. Gout is chronic inflammatory deposition disease related to an increase of cardiovascular (CV) events and mortality. Subclinical chronic inflammation has been demonstrated in this patients but not its relation with the monosodium urate (MSU) crystal deposit size and the number of CV risk factors.Objectives:To study the subclinical inflammation in intercritical gout patients and its possible relation to the estimated size of the crystal deposition and the number of CV risk factors.Methods:To analyze subclinical inflammation we performed a secretome analysis and a cytokine and adiponektine plasma levels quantification (IL-1β, IL-18, IL-6, sIL-6R, TNFα, CXCL-5, RANTES, leptin, resistin and adiponectin) in a cohort of gout patients. As nowadays it is not feasible to determinate the whole body deposit of MSU crystals we created three different MSU crystal deposit size patient groups using an indirect clinical and analytical classification to estimate it. Then we compared cytokine levels between healthy donors and gout patients. We also compared cytokine levels between the different crystal size deposition groups and studied its association to the number of CV risk factors.Results:Ninety consecutive patients attending a Crystal Arthritis Unit were studied. Mean age was 68.27 (28-101) years. 81.1% were male. Clinical gout evolution was of 10.1±9.8 years. 77.5% were on urate lowering treatment. 24% had tophaceous gout. Mean uric acid was 6.3±2.1 mg/dl with 47.1% of them being on target. Hypertension was present in 68.9%, diabetes mellitus in 18.9%, dislipemia in 48.9%, BMI>30 in 32.9%, abdominal obesity in 50% and 16.1% suffered from ischemic heart disease. From the 102 molecules studied in the secretome analysis in 56 there was at least a 20% difference between donors group and any of the deposition groups. In 74% of them gout patients secreted lower levels. IL-18, sIL-6R, RANTES, leptin and adiponectin were higher in patients than in healthy donors. IL-18, sIL6-R, RANTES and CXCL5 levels were associated to the size of the crystal deposits. IL-18, sIL-6R, RANTES and leptin were higher in gout groups with CV risk factors. IL-18, sIL6-R, RANTES and leptin were higher in gout patients with no risk factors when compared to healthy donors with no risk factors. We found no differences when comparing urate lowering treated and non-treated patients.Conclusion:Our results demonstrate that some proinflammatory cytokines and metabolic proteins are raised in intercritical gout patients. Some of them are different from the flare/inflammasome expected ones. In some cytokines this elevation is related to the size of the monosodium urate crystal deposit and/or to the number of cardiovascular risk factors. This cytokine changes could help to explain the increase of the cardiovascular events in gout patients.Disclosure of Interests:Cesar Diaz-Torne Grant/research support from: Received a grant from Grünenthal, Maria Angels Ortiz: None declared, Sicylle Jeria Navarro: None declared, Andrea Garcia-Gullien: None declared, Lluis Sainz: None declared, Hector Corominas: None declared, Silvia Vidal: None declared

scholarly journals THU0406 IDENTIFICATION OF INTRACELLULAR VACUOLES IN SYNOVIAL FLUID WITH CALCIUM PYROPHOSPHATE AND MONOSODIUM URATE CRYSTALS

2020 ◽  
Vol 79 (Suppl 1) ◽  
pp. 440.1-441
Author(s):  
M. L. Peral ◽  
I. Calabuig ◽  
A. Martín-Carratalá ◽  
M. Andrés ◽  
E. Pascual
Keyword(s):  
Clinical Practice ◽  
Synovial Fluid ◽  
Phase Contrast ◽  
Calcium Pyrophosphate ◽  
Monosodium Urate ◽  
Fluid Analysis ◽  
Cytoplasmic Vacuoles ◽  
Contrast Microscopy ◽  
Ordinary Light ◽  
Msu Crystals

Background:Synovial fluid analysis using polarized microscopy is the gold standard for the diagnosis of crystal-related arthritis. In our experience, we have noted that, when calcium pyrophosphate (CPP) crystals are observed, they sometimes appear within intracellular vacuoles. However, this phenomenon is not seen in those samples containing monosodium urate (MSU) crystals. This finding has been scantly reported in the literature, but may be useful in clinical practice to ensure accurate crystal identification.Objectives:Our study aims to assess whether the presence of vacuoles contributes to identifying the type of crystal, and also to gauge the frequency of their presentation.Methods:We conducted an observational study in a rheumatology unit between February and June of 2019. Synovial fluids containing CPP or MSU crystals, obtained in daily clinical practice, were consecutively included for analysis. Two observers simultaneously analyzed the presence of vacuoles by ordinary light and phase contrast microscopy in less than 24 hours after their extraction, using a microscope equipped with two viewing stations. The primary study variable was to determine whether CPP and MSU crystals are seen inside intracellular vacuoles, and to calculate the frequency of this finding for each type of crystal, estimating their 95% confidence interval (95% CI) and comparing rates using Fisher’s exact test.Results:Twenty-one samples were obtained. Data is given in the Table. MSU crystals were present in 7 (33.3%) and CPP crystals in 14 (66.6%). Interestingly, none of the MSU samples showed crystal-containing vacuoles (95% CI 0-35.4%). On the contrary, cytoplasmic vacuoles containing crystals were present in all of the CPP samples (95% CI 78.5-100%). The findings were confirmed by phase-contrast microscopy. Differences were statistically significant (p<0.001).Table.SAMPLES ACCORDING TO TYPE OF MICROCRYSTAL(n=21)SAMPLES WITH VACUOLS(UNDER ORDINARY LIGHT)SAMPLES WITH VACUOLS(UNDER PHASE CONTRAST)CPP (14; 66.6%)14 (100%)(95%CI 78.5-100%)14 (100%)(95%CI 78.5-100%)MSU (7; 33.3%)0 (0%)(95%CI 0-35.4%)0 (0%)(95%CI 0-35.4%)Conclusion:The presence of vacuoles may be a useful and easy way to differentiate MSU and CPP crystals when performing synovial fluid microscopy in clinical practice, since it appears to be a distinctive feature in CPP crystal fluids.References:[1]Kohn NN, Hughes RE, McCarty DJ Jr, Faires JS. The significance of calcium phosphate crystals in the synovial fluid of arthritic patients: the «pseudogout syndrome». II. Identification of crystals. Ann InternMed. 1962 May;56:738-45.[2]Pascual E, Sivera F, Andrés M. Synovial Fluid Analysis for Crystals. CurrOpRheumatol 2011;23:161-169.[3]McCarty DJ, Koopman WJ. Arthritis and allied conditions: A textbook of rheumatology, volumen 1. Lea &amp;Febiger. 1993.[4]Pascual E, Sivera F. Synovial fluid crystal Analysis. En Gout and other crystal arthropathies. Terkeltaub R ed. Elsevier; 2012: p.20-34.[5]Hwang HS, Yang CM, Park SJ, Kim HA. Monosodium Urate Crystal-Induced Chondrocyte Death via Autophagic Process. Int J Mol Sci. 2015 Dec 8;16(12):29265-77.Image 1. Microscopy with ordinary light. Cells with cytoplasmic vacuoles are observed, as well as abundant intra and extracellular CPP crystals.Image 2. Microscopy with phase contrast technique. Cells with intracellular vacuoles are observed inside which have microcrystals with parallelepiped morphology, compatible with CPP.Disclosure of Interests: :None declared

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