1,778 results match your criteria discoloration induced


Physiological responses (Hsps 60 and 32, caspase 3, HO scavenging, and photosynthetic activity) of the coral Pocillopora damicornis under thermal and high nitrate stresses.

Mar Pollut Bull 2021 Jul 20;171:112737. Epub 2021 Jul 20.

Environmental and Energy System, Graduate School of Science and Technology, Shizuoka University, 836 Ohya, Suruga-ku, Shizuoka 422-8529, Japan. Electronic address:

This study explored the physiological responses of the coral Pocillopora damicornis to high nitrate concentrations and thermal stresses. The expression of heat shock proteins Hsp60 and Hsp32, Symbiodiniaceae density, Chl a concentration, Fv/Fm, HO scavenging, and caspase 3 activity varied during 60 h incubations at 28 °C or 32 °C, ambient or high nitrate (~10 μM) concentrations, and their combinations. In combined stresses, corals showed a rapid and high oxidation level negatively affecting the Symbiodiniaceae density and Chl a concentration at 12 h, followed by caspase 3 and Hsps upregulations that induced apoptosis, bleaching and tissue detachment. Read More

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Tigecycline-Induced Tooth Discoloration in Children Younger than 8 Years.

Antimicrob Agents Chemother 2021 Jul 6:AAC0085421. Epub 2021 Jul 6.

Department of Pharmacy, The Cancer Hospital of the University of Chinese Academy of Sciences (Zhejiang Cancer Hospital), Institute of Basic Medicine and Cancer (IBMC), Chinese Academy of Sciences, Hangzhou, Zhejiang, China.

Tetracycline may cause tooth discoloration when used in young children during tooth development. Whether tigecycline, a tetracycline derivative, has either a similar adverse event or not remains unclear. We assessed the discoloration of the permanent teeth of patients <8 years old after tigecycline exposure. Read More

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The effect of different calcium silicate-based pulp capping materials on tooth discoloration: an in vitro study.

BMC Oral Health 2021 07 2;21(1):330. Epub 2021 Jul 2.

Department of Public Health and Community Medicine, Faculty of Medicine, Jordan University of Science and Technology, Irbid, Jordan.

Background: Variation in the composition of calcium silicate-based pulp capping materials could influence the discoloration potential of some of these materials, thus affecting the color and aesthetic appearance of the coronal tooth structure. Furthermore, contact with blood if hemostasis is not fully achieved may enhance this discoloration for some materials. Therefore the aim of this study was to evaluate in vitro the color change of coronal tooth structure after placing various calcium silicate-based materials in the pulp chamber in the presence or absence of blood. Read More

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Carbimazole-Induced Jaundice in Thyrotoxicosis: A Case Report.

Cureus 2021 May 25;13(5):e15241. Epub 2021 May 25.

Cardiology, Malabar Institute of Medical Sciences, Calicut, India, Calicut, IND.

Carbimazole is a commonly used antithyroid drug in thyrotoxicosis. It is generally well tolerated, and its side effects include allergic skin reactions, gastrointestinal upset, agranulocytosis, and hepatotoxicity. Hepatitis is a rare but serious side effect. Read More

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Bleaching: the initial treatment consideration for tetracycline-stained teeth.

Br Dent J 2021 06 25;230(12):807-812. Epub 2021 Jun 25.

Professor, Department of Restorative Sciences, The Dental College of Georgia, Augusta University, Augusta, GA, 30912, USA.

Tray tooth bleaching involves the use of carbamide peroxide in a custom-fitted tray to bleach teeth. One of the most difficult stains to bleach is tetracycline. This paper will present several different patient situations of tetracycline-stained teeth being bleached and will discuss the benefits and limitations of bleaching tetracycline-stained teeth. Read More

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Tooth discoloration induced by apical plugs with hydraulic calcium silicate-based cements in teeth with open apices-a 2-year in vitro study.

Clin Oral Investig 2021 Jun 21. Epub 2021 Jun 21.

Department of Conservative Dentistry and Periodontology and Center of Dental Traumatology, University Hospital of Würzburg, Pleicherwall 2, 97070, Würzburg, Germany.

Objectives: To assess tooth discoloration induced by different hydraulic calcium silicate-based cements (HCSCs), including effects of blood and placement method.

Materials And Methods: Eighty bovine teeth cut to a length of 18 mm (crown 8 mm, root 10 mm) were randomly assigned to 10 groups (n = 8), receiving orthograde apical plug treatment (APT). Apical plugs were 4 mm in length and made of ProRoot MTA (Dentsply), Medcem MTA (Medcem), TotalFill BC RRM Fast Set Putty (Brasseler), or Medcem Medical Portland Cement (Medcem) plus bismuth oxide (Bi2O3) with and without bovine blood. Read More

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Diabetes as a Risk Factor for Orthopedic Implant Surface Performance: A Retrieval and Study.

J Bio Tribocorros 2021 Jun 22;7(2). Epub 2021 Feb 22.

Department of Biomedical Engineering, University of Texas at Dallas, Richardson, TX, USA.

Orthopedic devices are often associated with increased risk for diabetic patients due to impaired wound healing capabilities. Adverse biological responses for immunocompromised patients at the implant-tissue interface can lead to significant bone resorption that may increase failure rates. The goal of this study was to characterize the surface of implants removed from diabetic patients to determine underlying mechanisms of diabetes-induced impaired osseointegration. Read More

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Deep freezing to maintain the freshness of pork loin during long-term storage.

Food Sci Biotechnol 2021 May 13;30(5):701-710. Epub 2021 May 13.

Department of Food Science and Biotechnology of Animal Resources, Konkuk University, 120 Neungdong-ro, Gwangjin-gu, Seoul, 05029 Korea.

As storage temperature impacts frozen meat quality, we evaluated the ideal freezing and storage temperatures for pork loin, and effects of long-term storage at - 60, - 50, and - 18 °C on pork loin physicochemical properties. Pork loin was cut into 30 × 30 × 30 mm (50 g) and packed in air-containing box. Thereafter, they were stored at different freezing temperature for 6 months. Read More

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Bee Venom Acupuncture Induced Skin Patch Discoloration Persisting for More Than 3 Years: A Case Report.

Authors:
Ji Hye Hwang

Chin J Integr Med 2021 Jun 8. Epub 2021 Jun 8.

Department of Acupuncture & Moxibustion Medicine, College of Korean Medicine, Gachon University, Seongnam, 13120, Republic of Korea.

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Polysaccharide Derived from Lotus Plumule Shows Potential Prebiotic Activity and Ameliorates Insulin Resistance in HepG2 Cells.

Polymers (Basel) 2021 May 28;13(11). Epub 2021 May 28.

Department of Biotechnology, Chonnam National University, Yeosu 59626, Korea.

Polysaccharides are key bioactive compounds in lotus plumule tea, but their anti-diabetes activities remain unclear. The purpose of this study was to investigate the prebiotic activities of a novel polysaccharide fraction from the lotus plumule, and to examine its regulation of glucose metabolism in insulin-resistant HepG2 cells. The polysaccharide (NNP) was purified after discoloration, hot water extraction, ethanol precipitation, and DEAE-cellulose chromatography to obtain purified polysaccharide fractions (NNP-2). Read More

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High concentration acid-induced discoloration polymeric dyes fabricated with UV-curable azobenzene-lignin-based waterborne polyurethane.

Int J Biol Macromol 2021 Jul 29;182:1953-1965. Epub 2021 May 29.

Key Laboratory of Eco-Textile, Ministry of Education, School of Textile Science and Engineering, Jiangnan University, 1800 Lihu Road, Wuxi 214122, People's Republic of China. Electronic address:

A durable and reversible acid-induced discoloration azobenzene UV-curable lignin-based waterborne polyurethane polymeric dye (EDA-ULPD) is prepared from lignin, azobenzene and pentaerythritol triacrylate(PETA) by chemical modification of waterborne polyurethane. Lignin and PETA are chemically bonded to the polyurethane chain to improve thermal stability, UV resistance and color fastness, while also endow the polymeric dye with UV curing performance, which is a green and environmentally friendly fixing way. The acid-induced discoloration property of EDA-ULPD with azobenzene chromophore side chain is comparable to those of 4-ethyl-4-2,2'-dihydroxy diethylamine azobenzene (EDA). Read More

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Scleral Discoloration Because of Minocycline Use: A Case Report and Review of the Literature.

Mil Med 2021 May 24. Epub 2021 May 24.

Ophthalmology Service, Malcom Randall Veterans Affairs Medical Center, Gainesville, FL 32608, USA.

In this case report, we highlight minocycline-induced scleral hyperpigmentation, combined with ear and fingernail discoloration that developed after over 15 years of use for rosacea in a 78-year-old male with multiple medical comorbidities. Minocycline, a tetracycline antibiotic, is used to treat rosacea and acne as well as some orthopedic infections. It is typically used for extended periods of time; long-term use of minocycline is associated with hyperpigmentation of the sclera, conjunctiva, retina, teeth, skin, subcutaneous fat, oral mucosa, tympanic membrane, and gingiva. Read More

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Tooth Discoloration Induced by Different Calcium Silicate-Based Cements: A Two-Year Spectrophotometric and Photographic Evaluation in Vitro.

J Clin Pediatr Dent 2021 Apr;45(2):112-116

Objective: Calcium silicate-based cements (CSCs) may lead to coronal staining in young permanent teeth over the time. The purpose of this study was to evaluate and compare the long-term tooth discoloration induced by different CSCs.

Study Design: Ninety freshly-extracted human molars were assigned randomly into 6 groups (n=15/group) according to the CSC used as a pulpotomy material: ProRoot MTA, MTA Angelus, NeoMTA, EndoSequence Putty, Biodentine and Negative control (No cement). Read More

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Effects of whitening toothpaste and bleaching treatment on resin composite discoloration caused by cigarette smoke and electronic vapor aerosol.

Am J Dent 2021 Apr;34(2):63-69

University of Rochester Eastman Institute for Oral Health, Rochester, NY, USA,

Purpose: To compare the effects of whitening toothpaste and bleaching with 6% hydrogen peroxide (H2O2) on discoloration of dental resin composite caused by cigarette smoke (CS) and electronic vapor product (EVP) aerosol.

Methods: 40 resin composite discs were divided into three groups: 15 each for CS and EVP aerosol exposure and 10 for air exposure (control). Exposures were performed for 15 days, with daily brushing with regular toothpaste. Read More

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Tooth discoloration induced by the different phases of a calcium aluminate cement: One-year assessment.

J Esthet Restor Dent 2021 Apr 30. Epub 2021 Apr 30.

Department of Dentistry, Health Sciences Center, Federal University of Santa Catarina, Florianópolis, Brazil.

Objectives: To assess the discoloration of teeth treated with the different phases of calcium aluminate cement (CAC), in comparison with the conventional CAC and mineral trioxide aggregate (MTA).

Materials And Methods: Fifty bovine incisors were prepared and filled. Two millimeters of the filling was removed to fabricate a cervical plug with the following cements (n=10): CA(CaO. Read More

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Investigation of the use of microwave ablation with and without cooling urethral perfusion for thermal ablation of the prostate gland in canine cadavers.

Am J Vet Res 2021 May;82(5):395-404

Objective: To investigate the use of microwave ablation (MWA) with cooling urethral perfusion and with no perfusion (MWA-UP and MWA-NP, respectively) for prostate gland ablation in canine cadavers.

Animals: Cadavers of 18 sexually intact male dogs.

Procedures: After technique refinement in 2 cadavers, laparotomy with ultrasound-guided MWA-UP (n = 8) or MWA-NP (8) of the prostate gland was performed in 16 cadavers. Read More

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Effect of irrigation solutions on the coronal discoloration induced by mineral trioxide aggregate cements containing different radiopacifiers.

Dent Res J (Isfahan) 2020 Nov-Dec;17(6):447-451. Epub 2020 Dec 10.

Department of Prosthodontics, School of Dentistry, Islamic Azad University, Tehran, Iran.

Background: The aim of this study was to assess the discoloration of coronal tooth structure irrigated with different irrigation solutions and filled with calcium silicate-based materials containing bismuth oxide or calciumzirconia complex as radiopacifier.

Materials And Methods: In this study, 72 bovine enamel-dentin blocks were prepared and divided into three groups. The dentinal cavities in each group were irrigated with 5. Read More

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December 2020

Stimuli-Induced Reversible Proton Transfer for Stimuli-Responsive Materials and Devices.

Acc Chem Res 2021 May 21;54(9):2216-2226. Epub 2021 Apr 21.

State Key Lab of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun 130012, P. R. China.

ConspectusStimuli-responsive materials have a great potential in various novel photoelectric devices, such as self-adaptive adjustment devices, intelligent detection, molecular computers with information storage capability, camouflage and anticounterfeiting display, various energy-saving displays, and others. However, progress in related areas has been relatively slow because of the lack of high-performance smart materials and the limitations of available reaction mechanisms currently. To address these problems fundamentally, new mechanisms need to be designed and developed, and learning from nature is an effective and intelligent method to achieve this long-awaited target, such as mimicking of proton transfer processes in nature at the molecular/supramolecular level. Read More

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Lower eyelid xanthelasma following hyaluronic acid filler injections to the tear troughs.

J Cosmet Dermatol 2021 Apr 20. Epub 2021 Apr 20.

Cosmetic Laser Dermatology: A West Dermatology Company, San Diego, CA, USA.

Introduction: Adverse effects from dermal fillers are uncommon. We report a case of filler-induced xanthelasma at the bilateral infraorbital region in a 43-year-old woman after multiple injections of hyaluronic acid to correct tear trough depression.

Material And Methods: We report a case of a 43-year-old woman with a chief complaint of skin discoloration of the bilateral lower eyelids. Read More

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[When a Cold Becomes Life-threatening].

Authors:
Karin Schöls

Rheuma Plus 2021 Apr 8:1-3. Epub 2021 Apr 8.

Klinische Abteilung für Innere Medizin II, Rheumatologie, Universitätsklinikum St. Pölten, Dunant-Platz 1, 3100 Sankt Pölten, Österreich.

A 30-year-old woman presented with remitting upper airway infections. Over time she developed mastoiditis resistant to antibiotics, arthritis of her ankle as well as multilocular arthralgias and a livid discoloration of her fingertips. A computed tomography (CT) scan of her chest revealed a cavernous process and c‑ANCA (Anti Neutrophilen Cytoplasmatic Antibody) positivity led to the diagnosis granulomatosis with polyangiitis (formerly called Wegener's). Read More

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Difference in lesion formation by male and female .

J Nematol 2020 25;52. Epub 2020 Aug 25.

Plant Pathology Department, University of Wisconsin-Madison, 491 Russell Laboratories, 1630 Linden Dr., Madison, WI, 53706.

induce necrotic lesions, the hallmark symptom for the genus, soon after infection. The objective of our study was to characterize and quantify gender differences in lesion development. Independent experiments were conducted for three hosts; pea ( L. Read More

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Minocycline-induced black bone disease with synovial pigmentation in a patient undergoing revision anterior cruciate ligament surgery: A case report.

Int J Surg Case Rep 2021 Apr 23;81:105819. Epub 2021 Mar 23.

Orthopaedic Trauma Service, Department of Orthopaedic Surgery, Hospital for Special Surgery, NewYork-Presbyterian, Weill Medical College of Cornell University, New York, NY, United States. Electronic address:

Introduction: Long-term use of minocycline at high doses is associated with hyperpigmentation with multiple sites of involvement. While the cutaneous organs and the oral cavity are most commonly affected, bone discoloration is a rare entity.

Case Presentation: A 19-year-old male patient with a history of acne vulgaris and intermittent treatment with high dose minocycline for three years presented with recurrent anterior cruciate ligament (ACL) tear. Read More

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Comparative Assessment of Tooth Color Change under the Influence of Nano Fast Cement and MTA.

J Dent (Shiraz) 2021 Mar;22(1):48-52

Dept. of Orthodontic, School of Dentistry, Shiraz University of Medical Sciences, Shiraz, Iran.

Statement Of The Problem: Tooth color changes followed by treatment with bioceramic materials are always a matter of concern.

Purpose: The aim of the present study was to compare tooth discoloration that occurs in human teeth filled with ProRoot WMTA (DENTSPLY Tulsa Dental Specialties, Tulsa, OK) and those filled with Nano Fast Cement (NFC) over the course of 3 months.

Materials And Method: In this experimental study, Thirty human intact premolars were obtained. Read More

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Optical detection of the potential for tooth discoloration from children's beverages by quantitative light-induced fluorescence technology.

Photodiagnosis Photodyn Ther 2021 Jun 1;34:102240. Epub 2021 Mar 1.

Department of Preventive Dentistry & Public Oral Health, BK21 FOUR Project, Yonsei University College of Dentistry, Seoul, South Korea. Electronic address:

Background: Some beverages are known to cause extrinsic staining on the tooth. This study investigated the degree of pigmentation caused by children's acidic beverages, and to confirm the possibility of the quantitative light-induced fluorescence (QLF) technology in assessing staining of the tooth.

Methods: Bovine tooth specimens were subjected to an 8-day pH-cycling model, using six children's beverages (experimental groups) and a cola (control group), and a remineralizing solution. Read More

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Levamisole-Induced Necrosis and Vasculitis.

Skinmed 2021 1;19(1):60-62. Epub 2021 Feb 1.

A 56 year-old Caucasian man with a past medical history (PMH) of cytopenia and a positive antinuclear antibody (ANA) presented to the dermatology office due to painful discoloration of the ears (Figure 1) and a "rash" on the upper portion of his right arm (Figure 2) which had initially subsided but later worsened. Punch biopsies of the right ear and right arm lesions were performed at the initial visit. (. Read More

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February 2021

Therapeutic Effects of Different Animal Bile Powders on Lipid Metabolism Disorders and Their Composition Analysis.

Chin J Integr Med 2021 Feb 20. Epub 2021 Feb 20.

Academy of Integrative Medicine Cardiovascular Research Institute, Fuzhou, 350122, China.

Objective: To compare the therapeutic effect of different animal bile powders on lipid metabolism disorders induced by high-fat diet in rats, and analyze the bioactive components of each animal bile powder.

Methods: Sixty Sprague-Dawley rats were randomly divided into 6 groups (n=10): normal diet control group, high-fat diet model group, high-fat diet groups orally treated with bear, pig, cow and chicken bile powders, respectively. Serum biochemical markers from the abdominal aorta in each group were analyzed. Read More

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February 2021

[Accidental feeding of the coccidiostat nicarbazin in layer breeder flocks - A case report].

Tierarztl Prax Ausg G Grosstiere Nutztiere 2021 Feb 15;49(1):51-58. Epub 2021 Feb 15.

Fachbereich Veterinärmedizin, Freie Universität Berlin.

Following the accidental feeding of a compound feed containing the coccidiostat nicarbacin in layer breeder flocks (Lohmann Brown Classic), the birds displayed distinct clinical signs within a few hours. Mortality increased during the following 5 days, whereas laying performance and hatching rate of eggs during this period decreased markedly. Egg shell discoloration was observed as early as during the first day. Read More

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February 2021

Use of Botulinum Toxin A to Treat Chemotherapy-Induced Raynaud's Phenomenon.

Cureus 2021 Jan 5;13(1):e12511. Epub 2021 Jan 5.

Division of Plastic & Reconstructive Surgery, Lehigh Valley Health Network, Allentown, USA.

Raynaud's phenomenon (RP) is a vasospastic disorder of the digital blood vessels leading to pain, paresthesias, and pallor in response to cold or stress. RP can develop secondary to a number of pathologies or factors, including the use of chemotherapy agents. Typical first-line therapies for secondary RP may be contraindicated in patients with certain comorbidities. Read More

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January 2021

Effect of a medicinal and edible decoction YH0618 on chemotherapy-induced dermatologic toxicity: a randomized controlled trial.

Ann Transl Med 2021 Jan;9(1)

School of Chinese Medicine, The University of Hong Kong, Hong Kong, China.

Background: Dermatologic toxicities are the common adverse events (AE) with several chemotherapy agents, but they are usually neglected in the research literature and clinical practice, and there are no clinically safe and effective methods to solve the problem. This study was to determine whether a medicinal and edible decoction YH0618 is effective in accelerating reducing chemotherapy-induced dermatologic toxicity in cancer patients who have completed chemotherapy.

Methods: This was a prospective randomized controlled trial conducted between 2015 and 2017. Read More

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January 2021

In Vivo Transcutaneous Monitoring of Hemoglobin Derivatives Using a Red-Green-Blue Camera-Based Spectral Imaging Technique.

Int J Mol Sci 2021 Feb 3;22(4). Epub 2021 Feb 3.

Graduate School of Bio-Applications & Systems Engineering, Tokyo University of Agriculture and Technology, Koganei 184-8588, Japan.

Cyanosis is a pathological condition that is characterized by a bluish discoloration of the skin or mucous membranes. It may result from a number of medical conditions, including disorders of the respiratory system and central nervous system, cardiovascular diseases, peripheral vascular diseases, deep vein thrombosis, and regional ischemia. Cyanosis can also be elicited from methemoglobin. Read More

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February 2021