237,854 results match your criteria necrotic morphology

Application of digital holographic tomography in antitumor effect of cantharides complex on 4T1 breast cancer cells.

Appl Opt 2021 Apr;60(12):3365-3373

The study focuses on a methodology providing noninvasive monitoring and evaluation of the antitumor effect of traditional Chinese medicine, cantharides complex (canth), on 4T1 breast tumor cells. Digital holographic tomography (DHT) and developed data post-processing algorithms were used for quantitative estimation of changes in optical and morphological parameters of cells. We calculated and compared data on the refractive index, thickness, and projected area of 4T1 breast tumor cells in control untreated specimens and those treated with doxorubicin hydrochloride (DOX), canth, and their combinations. Read More

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Comparison of Nuclear Grade, Necrosis, and Histologic Subtype Between Biopsy and Resection in Pleural Malignant Mesothelioma.

Am J Clin Pathol 2021 May 12. Epub 2021 May 12.

Department of Pathology, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan.

Objectives: Numerous studies on malignant mesothelioma (MM) highlight the prognostic importance of histologic subtype, nuclear grade, and necrosis. This study compares these parameters in paired biopsy and resection specimens of pleural MM.

Methods: Histologic subtype, percentage of epithelioid morphology, nuclear grade, and the presence or absence of necrosis were compared in 429 paired biopsies and resection specimens of pleural MM from 19 institutions. Read More

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Atraumatic femoral head necrosis: a biomechanical, histological and radiological examination compared to primary hip osteoarthritis.

Arch Orthop Trauma Surg 2021 May 10. Epub 2021 May 10.

Department of Orthopaedic, Trauma and Plastic Surgery, Leipzig University, Liebigstr. 20, 04103, Leipzig, Germany.

Introduction: Atraumatic necrosis of the femoral head (AFHN) is a common disease with an incidence of 5000-7000 middle-aged adults in Germany. There is no uniform consensus in the literature regarding the configuration of the bone in AFHN. The clinical picture of our patients varies from very hard bone, especially in idiopathic findings, and rather soft bone in cortisone-induced necrosis. Read More

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First Report of Alfalfa Anthracnose Caused by in Xinjiang, China.

Plant Dis 2021 May 10. Epub 2021 May 10.

Bazhou Agricultural Technology Promotion Center, plant protection , korla, xinjiang, China;

Alfalfa ( L.) is widely planted in the world as one of the most important leguminous forage crops, and it is also the first choice of forage crops for animal feed in Xinjiang. In June 2018, alfalfa plants with typical anthracnose symptoms were observed in 75% of alfalfa fields in Hutubi County, Xinjiang, China. Read More

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L-carnitine extenuates endocrine disruption, inflammatory burst and oxidative stress in carbendazim-challenged male rats via upregulation of testicular StAR and FABP9, and downregulation of P38-MAPK pathways.

Toxicology 2021 May 6:152808. Epub 2021 May 6.

Cairo University, Cairo, Egypt.

We have addressed in the current study the potential of L-carnitine (LC) to extenuate the reproductive toxic insults of carbendazim (CBZ) in male rats, and the molecular mechanisms whereby carnitine would modify the spermatogenic and steroidogenic derangements invoked by the endocrine disruptor. Herein, animals received daily doses of carbendazim (100 mg/kg) by gavage for 8 weeks. Another CBZ-challenged group was co-supplemented with LC (500 mg/kg, IP) twice weekly for 8 weeks. Read More

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Influence of bisphosphonates on oral implantology: Sodium alendronate and zoledronic acid enhance the synthesis and activity of matrix metalloproteinases by gingival fibroblasts seeded on titanium.

Arch Oral Biol 2021 Apr 24;127:105134. Epub 2021 Apr 24.

Department of Physiology and Pathology, São Paulo State University (UNESP), School of Dentistry, Araraquara, SP, Brazil.

Objective: This study aimed to assess the influence of the bisphosphonates zoledronic acid and sodium alendronate on MMP-2 and MMP-9 synthesis and activity by gingival fibroblasts seeded onto titanium substrate.

Design: Titanium discs were placed in 24-well cell culture plates and gingival fibroblasts were seeded (1 × 10 cells/discs) on them using Dulbecco's Modified Eagle's Medium (DMEM) + 10 % fetal bovine serum (FBS) for 24 h. After this period, a fresh serum-free DMEM containing zoledronic acid or sodium alendronate at 0. Read More

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Imaging features of gluteal in vitro fertilization injection granulomas, with delayed clinical presentation simulating soft tissue sarcoma.

Skeletal Radiol 2021 May 7. Epub 2021 May 7.

Department of Surgery, University of Toronto Musculoskeletal Oncology Unit, Mount Sinai Hospital, and Division of Orthopedic Surgery, University of Toronto, Toronto, Ontario, Canada.

Objectives: To review the clinical and imaging findings of patients with remote history of intramuscular (IM) in vitro fertilization (IVF) gluteal injections, presenting with signs and symptoms of a possible gluteal soft tissue sarcoma.

Methods And Methods: Retrospective review of consecutive patients with a history of prior IVF therapy referred for MRI evaluation of a gluteal soft tissue mass was performed. Six patients were reviewed, with 5 patients meeting study inclusion criteria. Read More

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Overexpression of TNFα induces senescence, autophagy and mitochondrial dysfunctions in melanoma cells.

BMC Cancer 2021 May 6;21(1):507. Epub 2021 May 6.

Cancer Research Institute, Biomedical Research Center of Slovak Academy of Sciences, Dubravska cesta 9, 845 05, Bratislava, Slovakia.

Background: Tumor necrosis factor alpha (TNFα) is a pleiotropic cytokine with both anti-tumorigenic and pro-tumorigenic activity, affecting tumor cell biology, the balance between cell survival and death. The final effect of TNFα is dependent on the type of malignant cells, with the potential to arrest cancer progression.

Methods: In order to explain the diverse cellular response to TNFα, we engineered melanoma and colorectal carcinoma cell lines stably overexpressing this cytokine. Read More

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Xiaokang Liuwei Dihuang decoction ameliorates the immune infertility of male rats induced by lipopolysaccharide through regulating the levels of sex hormones, reactive oxygen species, pro-apoptotic and immune factors.

Biomed Pharmacother 2021 May 2;139:111514. Epub 2021 May 2.

Department of Urology and Andrology, the First Affiliated Hospital of Yunnan University of Traditional Chinese Medicine, Kunming, Yunnan 650000, China. Electronic address:

Male immune infertility is a kind of disease that damages family life and happiness. The development of novel methods treating male immune infertility is of great significance. This study aimed to investigate the therapeutic effects of Chinese medicine Xiaokang Liuwei Dihuang decoction on immune infertility of male rats and explored the involved mechanisms. Read More

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Sarcomatoid carcinoma associated with chronic empyema and early lung and pleural metastases: A case report.

Medicine (Baltimore) 2021 May;100(18):e25692

Department of Pathology, Inha University Hospital, Inha University College of Medicine, Jung-gu, Incheon, South Korea.

Introduction: The relationship between chronic empyema and malignant tumors, most of which are lymphoma, has been recognized for many decades. Sarcomatoid carcinoma associated with chronic empyema is extremely rare, may metastasize to other organs in the early stage, and rapidly progresses to death. As far as we know, this was the first case report on sarcomatoid carcinoma associated chronic empyema. Read More

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First report of Verticillium wilt and mortality of caused by and in Spain.

Plant Dis 2021 May 4. Epub 2021 May 4.

Universitat de Girona, 16738, Institute of Food and Agricultural Technology, Girona, Catalunya, Spain;

(Mill.) swingle is a highly invasive tree that has become established worldwide, especially in the Mediterranean Basin because of its good drought resistance. is included in the list of Invasive Alien Species of the EU, so measures for eradication and management are required. Read More

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First Report of Stem and Foliage Blight of Chrysanthemum Caused by in the United States.

Plant Dis 2021 May 4. Epub 2021 May 4.

Clemson University, Plant and Environmental Sciences, 105 Collings St., 214 BRC, Clemson, South Carolina, United States, 29634-0310;

Chrysanthemum ( × ) plants exhibiting stem and foliage blight were observed in a commercial nursery in eastern Oklahoma in June 2019. Disease symptoms were observed on ~10% of plants during a period of frequent rain and high temperatures (26-36°C). Dark brown lesions girdled the stems of symptomatic plants and leaves were wilted and necrotic. Read More

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A novel strategy for isolation of mice bone marrow endothelial cells (BMECs).

Stem Cell Res Ther 2021 May 3;12(1):267. Epub 2021 May 3.

Blood Diseases Institute, Xuzhou Medical University, Xuzhou, 221002, China.

Background: In the bone marrow microenvironment (BM), endothelial cells are individual cells that form part of the sinusoidal blood vessels called the "bone marrow endothelial-vascular niche." They account for less than 2% of the bone marrow cells. They play essential functions by generating growth and inhibitory factors that promote the hematopoietic stem cells (HSCs) regulation. Read More

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Layer-By-Layer Fabrication of Large and Thick Human Cardiac Muscle Patch Constructs With Superior Electrophysiological Properties.

Front Cell Dev Biol 2021 16;9:670504. Epub 2021 Apr 16.

Department of Biomedical Engineering, School of Medicine and School of Engineering, University of Alabama at Birmingham, Birmingham, AL, United States.

Engineered cardiac tissues fabricated from human induced pluripotent stem cells (hiPSCs) show promise for ameliorating damage from myocardial infarction, while also restoring function to the damaged left ventricular (LV) myocardium. For these constructs to reach their clinical potential, they need to be of a clinically relevant volume and thickness, and capable of generating synchronous and forceful contraction to assist the pumping action of the recipient heart. Design prerequisites include a structure thickness sufficient to produce a beneficial contractile force, prevascularization to overcome diffusion limitations and sufficient structural development to allow for maximal cell communication. Read More

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RIP1 Perturbation Induces Chondrocyte Necroptosis and Promotes Osteoarthritis Pathogenesis Targeting BMP7.

Front Cell Dev Biol 2021 16;9:638382. Epub 2021 Apr 16.

Beijing Key Laboratory of Sports Injuries, Department of Sports Medicine, Institute of Sports Medicine of Peking University, Peking University Third Hospital, Beijing, China.

Osteoarthritis (OA) is a highly prevalent and debilitating joint disorder that characterized by progressive destruction of articular cartilage. There is no effective disease-modifying therapy for the condition due to limited understanding of the molecular mechanisms on cartilage maintenance and destruction. Receptor-interacting protein kinase 1 (RIP1)-mediated necroptosis plays a vital role in various diseases, but the involvement of RIP1 in OA pathogenesis remains largely unknown. Read More

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Effect of formaldehyde and urea contaminated feed exposure into the liver of young and adult pigeons ().

Vet World 2021 Mar 26;14(3):769-776. Epub 2021 Mar 26.

Department of Anatomy and Histology, Faculty of Veterinary Science, Bangladesh Agricultural University, Mymensingh-2202, Bangladesh.

Background And Aim: Nowadays, toxic chemical contaminants in food are a major food safety problem in Bangladesh. Among toxic food contaminants, formalin is used to preserve fruit, vegetables, and fish, where urea is used for the whitening of rice and puffed rice. The purpose of this study was to determine the biochemical and histopathological effects on the liver of young and adult pigeons after exposure to formalin and urea contaminated feed. Read More

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Morphological variants to predict outcome of avascular necrosis in developmental dysplasia of the hip.

Bone Joint J 2021 May;103-B(5):999-1004

Department of Orthopaedic Surgery, Sophia's Children's Hospital, Erasmus University Medical Centre, Rotterdam, The Netherlands.

Aims: The most important complication of treatment of developmental dysplasia of the hip (DDH) is avascular necrosis (AVN) of the femoral head, which can result in proximal femoral growth disturbances leading to pain, dysfunction, and eventually to early onset osteoarthritis. In this study, we aimed to identify morphological variants in hip joint development that are predictive of a poor outcome.

Methods: We retrospectively reviewed all patients who developed AVN after DDH treatment, either by closed and/or open reduction, at a single institution between 1984 and 2007 with a minimal follow-up of eight years. Read More

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Machine learning-based image analysis for accelerating the diagnosis of complicated preneoplastic and neoplastic ductal lesions in breast biopsy tissues.

Breast Cancer Res Treat 2021 May 1. Epub 2021 May 1.

Molecular Pathology and Genetics Division, Kanagawa Cancer Center Research Institute, 2-3-2 Nakao, Asahi-Ku, Yokohama, Kanagawa, 241-8515, Japan.

Purpose: Diagnosis of breast preneoplastic and neoplastic lesions is difficult due to their similar morphology in breast biopsy specimens. To diagnose these lesions, pathologists perform immunohistochemical analysis and consult with expert breast pathologists. These additional examinations are time-consuming and expensive. Read More

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Cardiovascular, hematological and neurosensory impact of COVID-19 and variants.

Eur Rev Med Pharmacol Sci 2021 04;25(8):3350-3364

Cardiovascular Division, Pompidou Hospital, University of Paris, Paris, France.

Objective: The purpose of this article was to review our clinical experience with COVID-19 patients observed in the Cardiovascular Division of Pompidou Hospital (University of Paris, France) and the Department of Neurology of the Eastern Piedmont University (Novara, Italy), related to the impact on the cardiovascular, hematological, and neurologic systems and sense organs.

Patients And Methods: We sought to characterize cardiovascular, hematological, and neurosensory manifestations in patients with COVID-19 and variants. Special attention was given to initial signs and symptoms to facilitate early diagnosis and therapy. Read More

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Engineering of Solid Dosage Forms of siRNA-Loaded Lipidoid-Polymer Hybrid Nanoparticles Using a Quality-by-Design Approach.

Methods Mol Biol 2021 ;2282:137-157

Department of Pharmacy, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen Ø, Denmark.

Therapy based on RNA interference (RNAi), which can be mediated by exogenous small interfering RNA (siRNA), has potential for the management of diseases at the genetic level by silencing gene function(s). In all eukaryotic cells, RNAi is an endogenous regulatory mechanism, where messenger RNA (mRNA) is degraded, preventing its translation into protein. A significant advantage of RNAi therapy is that siRNA is very potent and gene silencing is highly specific, ensuring few off-target effects. Read More

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January 2021

Astaxanthin inhibits inflammation of human periodontal ligament cells induced by lipopolysaccharide.

Zhong Nan Da Xue Xue Bao Yi Xue Ban 2021 Mar;46(3):227-233

Department of Orthodontics, Stomatological Hospital of Chongqing Medical University, Chongqing 401147.

Objectives: Human periodontal ligament cells (hPDLCs) are important source of periodontal tissue reconstruction. Under chronic inflammation, the multi-directional differentiation potential and chemotaxis in hPDLCs are decreased. Therefore, inhibiting inflammatory microenvironment and improving the functional characteristics of stem cells can better promote periodontal tissue reconstruction. Read More

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PIMS-TS, the New Paediatric Systemic Inflammatory Disease Related to Previous Exposure to SARS-CoV-2 Infection-"Rheumatic Fever" of the 21st Century?

Int J Mol Sci 2021 Apr 26;22(9). Epub 2021 Apr 26.

Department of Clinical Immunology and Immunotherapy, Medical University of Lublin, Chodzki 4a Street, 20-093 Lublin, Poland.

Paediatric inflammatory multisystem syndrome temporally associated with () (PIMS-TS) is a new systemic inflammatory disease that mainly affects children. Its course in many features resembles that of acute rheumatic fever (ARF). Therefore, it is interesting that the experiences with ARF can be used in the management of patients with PIMS-TS. Read More

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Inflammatory Regulation by TNF-α-Activated Adipose-Derived Stem Cells in the Human Bladder Cancer Microenvironment.

Int J Mol Sci 2021 Apr 13;22(8). Epub 2021 Apr 13.

Division of Urology, Department of Surgery, Tri-Service General Hospital, National Defense Medical Center, Taipei 114, Taiwan.

Mesenchymal stem cells (MSCs), such as adipose-derived stem cells (ADSCs), have the most impressive ability to reduce inflammation through paracrine growth factors and cytokines that participate in inflammation. Tumor necrosis factor (TNF)-α bioactivity is a prerequisite in several inflammatory and autoimmune disease models. This study investigated the effects of TNF-α stimulate on ADSCs in the tumor microenvironment. Read More

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Citric Acid Cycle Metabolites Predict Infarct Size in Submitted to Transient Coronary Artery Occlusion and Treated with Succinate Dehydrogenase Inhibitors or Remote Ischemic Perconditioning.

Int J Mol Sci 2021 Apr 16;22(8). Epub 2021 Apr 16.

Cardiovascular Diseases Research Group, Department of Cardiology, Vall d'Hebron Institut de Recerca (VHIR), Vall d'Hebron Hospital Universitari, Vall d'Hebron Barcelona Hospital Campus, Passeig Vall d'Hebron 119-129, 08035 Barcelona, Spain.

Succinate dehydrogenase (SDH) inhibition with malonate during reperfusion reduced myocardial infarction in animals, whereas its endogenous substrate, succinate, is detected in plasma from STEMI patients. We investigated whether protection by SDH inhibition is additive to that of remote ischemic perconditioning (RIC) in submitted to transient coronary artery occlusion, and whether protective maneuvers influence plasma levels of citric acid cycle metabolites. Forty were submitted to 40 min coronary occlusion and reperfusion, and allocated to four groups (controls, sodium malonate 10 mmol/L, RIC, and malonate + RIC). Read More

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Comparative Study on Curcumin Loaded in Golden Pompano () Head Phospholipid and Soybean Lecithin Liposomes: Preparation, Characteristics and Anti-Inflammatory Properties.

Molecules 2021 Apr 16;26(8). Epub 2021 Apr 16.

Hainan Engineering Research Center of Aquatic Resources Efficient Utilization in South China Sea, Hainan University, Hainan 570228, China.

In this study, we compared the characteristics and in vitro anti-inflammatory effects of two curcumin liposomes, prepared with golden pompano head phospholipids (GPL) and soybean lecithin (SPC). GPL liposomes (GPL-lipo) and SPC liposomes (SPC-lipo) loaded with curcumin (CUR) were prepared by thin film extrusion, and the differences in particle size, ζ-potential, morphology, and storage stability were investigated. The results show that GPL-lipo and SPC-lipo were monolayer liposomes with a relatively small particle size and excellent encapsulation rates. Read More

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Isorhamnetin Ameliorates Dry Eye Disease via CFTR Activation in Mice.

Int J Mol Sci 2021 Apr 12;22(8). Epub 2021 Apr 12.

College of Pharmacy and Yonsei Institute of Pharmaceutical Sciences, Yonsei University, 85 Songdogwahak-ro, Yeonsu-gu, Incheon 21983, Korea.

Dry eye disease is one of the most common diseases, with increasing prevalence in many countries, but treatment options are limited. Cystic fibrosis transmembrane conductance regulator (CFTR) is a major ion channel that facilitates fluid secretion in ocular surface epithelium and is a potential target of therapeutic agent for the treatment of dry eye disease. In this study, we performed a cell-based, high-throughput screening for the identification of novel natural products that activate CFTR and restore the aqueous deficiency in dry eye. Read More

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Endoplasmic Reticulum Stress Contributes to Gefitinib-Induced Apoptosis in Glioma.

Int J Mol Sci 2021 Apr 11;22(8). Epub 2021 Apr 11.

Department of Medical Research, Taichung Veterans General Hospital, Taichung 407, Taiwan.

Adequate stress on the Endoplasmic Reticulum (ER) with the Unfolded Protein Response (UPR) could maintain glioma malignancy. Uncontrolled ER stress, on the other hand, predisposes an apoptosis-dominant UPR program. We studied here the proapoptotic actions of the Epidermal Growth Factor Receptor (EGFR) inhibitor gefitinib, with the focus on ER stress. Read More

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Neuroinflammatory Response to TNFα and IL1β Cytokines Is Accompanied by an Increase in Glycolysis in Human Astrocytes In Vitro.

Int J Mol Sci 2021 Apr 14;22(8). Epub 2021 Apr 14.

Department of Biomedical Sciences, University of Lausanne, CH-1005 Lausanne, Switzerland.

Astrogliosis has been abundantly studied in rodents but relatively poorly in human cells due to limited access to the brain. Astrocytes play important roles in cerebral energy metabolism, and are also key players in neuroinflammation. Astroglial metabolic and inflammatory changes as a function of age have been reported, leading to the hypothesis that mitochondrial metabolism and inflammatory responses are interconnected in supporting a functional switch of astrocytes from neurotrophic to neurotoxic. Read More

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Melatonin Modulates the Antioxidant Defenses and the Expression of Proinflammatory Mediators in Pancreatic Stellate Cells Subjected to Hypoxia.

Antioxidants (Basel) 2021 Apr 8;10(4). Epub 2021 Apr 8.

Institute of Molecular Pathology Biomarkers, University of Extremadura, 10003 Caceres, Spain.

Pancreatic stellate cells (PSC) play a major role in the formation of fibrotic tissue in pancreatic tumors. On its side, melatonin is a putative therapeutic agent for pancreatic cancer and inflammation. In this work, the actions of melatonin on PSC subjected to hypoxia were evaluated. Read More

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β-Sitosterol Circumvents Obesity Induced Inflammation and Insulin Resistance by down-Regulating IKKβ/NF-κB and JNK Signaling Pathway in Adipocytes of Type 2 Diabetic Rats.

Molecules 2021 Apr 6;26(7). Epub 2021 Apr 6.

Department of Anatomy, All India Institute of Medical Sciences, Nagpur, Maharashtra 440025, India.

β-sitosterol (SIT), the most abundant bioactive component of vegetable oil and other plants, is a highly potent antidiabetic drug. Our previous studies show that SIT controls hyperglycemia and insulin resistance by activating insulin receptor and glucose transporter 4 (GLUT-4) in the adipocytes of obesity induced type 2 diabetic rats. The current research was undertaken to investigate if SIT could also exert its antidiabetic effects by circumventing adipocyte induced inflammation, a key driving factor for insulin resistance in obese individuals. Read More

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