scholarly journals Complement C9 expression is associated with damaged myocardial cells in pediatric sudden death cases of fulminant myocarditis

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Akari Takaya Uno ◽  
Masahito Hitosugi ◽  
Mami Nakamura ◽  
Tomoyuki Nakanishi ◽  
Takahiro Mima ◽  
...  
Keyword(s):  
Sudden Death ◽  
Acute Myocarditis ◽  
Lymphocytic Infiltration ◽  
Pericardial Fluid ◽  
Sirtuin 1 ◽  
Fulminant Myocarditis ◽  
Myocardial Cells ◽  
Hematoxylin And Eosin ◽  
Hematoxylin And Eosin Staining ◽  
Complement C9

Abstract Background Because disease progression is so fast in sudden death of acute fulminant myocarditis, damage of myocardial cells is not evident in routine hematoxylin and eosin staining. To understand damage to myocardial cells and the mechanism of sudden death, immunohistochemical staining was performed for two forensic autopsy cases. Case presentation The patients were a healthy 5-year-old girl and 8-year-old boy. They suddenly died within 2 days of appearance of flu-like symptoms. An autopsy showed accumulation of yellowish-clear pericardial fluid containing fibrin deposits, fluid blood in the heart, and congestion of visceral organs. Histologically, minor necrosis or degeneration of myocardial cells with mainly lymphocytic infiltration was observed sometimes in tissue sections. Immunohistochemically, positive complement C9 staining and negative sirtuin 1 staining were found. These findings suggested wide damage of myocardial cells, even in regions with no marked changes in myocardial cells with hematoxylin and eosin staining. These areas corresponded to those with strong accumulation of lymphocytes. Conclusions Immunohistochemistry for complement C9 and sirtuin 1 might become a new tool for evaluating damage of myocardial cells of fulminant acute myocarditis.

Presence and significance of NK cells in glioblastomas

1989 ◽  
Vol 70 (5) ◽  
pp. 728-731 ◽  
Author(s):  
Jesús Vaquero ◽  
Santiago Coca ◽  
Santiago Oya ◽  
Roberto Martínez ◽  
Josefa Ramiro ◽  
...  
Keyword(s):  
Monoclonal Antibody ◽  
Nk Cells ◽  
Survival Time ◽  
Tumor Cells ◽  
Lymphocytic Infiltration ◽  
Surface Marker ◽  
Content Type ◽  
Hematoxylin And Eosin ◽  
Hematoxylin And Eosin Staining ◽  
Fine Print

✓ A monoclonal antibody against the surface marker IOT-10 of natural killer (NK) cells was used to investigate the presence of these cells in a series of 25 glioblastomas. In 40% of the tumors, IOT-10-positive NK cells were found in small numbers scattered among the tumor cells. The presence of IOT-10-positive NK cells was not related to the degree of lymphocytic infiltration in the tumor as demonstrated by hematoxylin and eosin staining, nor did it appear to influence the survival time of the patients studied.

Myocarditis Presenting as Sudden Death in Infants and Children: A Single Centre Analysis by ESGFOR Study Group

2021 ◽  
pp. 109352662110072
Author(s):  
Oana Neagu ◽  
Amparo Fernández Rodríguez ◽  
Domitille Callon ◽  
Laurent Andréoletti ◽  
Marta C Cohen
Keyword(s):  
Sudden Death ◽  
Influenza A ◽  
Group A Streptococcus ◽  
Acute Myocarditis ◽  
Clinical History ◽  
Infants And Children ◽  
Group A ◽  
Clinical Awareness ◽  
Type 3 ◽  
In Infants And Children

Background Acute myocarditis is an inflammatory disease of the heart mostly diagnosed in young people, which can present as sudden death. The etiology includes infectious agents (mostly viruses), systemic diseases and toxins. We aim to characterize infants and children with myocarditis at post-mortem presenting as sudden deaths. Methods Retrospective evaluation of 813 post-mortems in infants and children dying suddenly and unexpectedly between 2009–2019. Data retrieved included histological features, microbiology and clinical history. Results 23 of 813 post-mortems reviewed corresponded to acute myocarditis and 1 to dilated cardiomyopathy related to remote Parvovirus infection. PCR identified enterovirus (7), parvovirus (7 cases, 2 also with HHV6 and 1 case with EVB), Influenza A (1), Parainfluenza type 3 (1). Two cases corresponded to hypersensitivity myocarditis, 1 was Group A Streptococcus and 5 idiopathic myocarditis. Enterovirus was frequent in infants (7/10), and in newborns was associated with meningoencephalitis or congenital myocarditis. More than 50% were less than 2 years of age and all remained clinically unsuspected. Conclusion Myocarditis represents almost 3% of all sudden pediatric deaths. Enterovirus and parvovirus were the most common viruses. This retrospective analysis showed that patients experienced viral symptoms but remained unsuspected, highlighting the need for more clinical awareness of myocarditis.

scholarly journals Therapeutic Efficacies of Artemisia capillaris Extract Cream Formulation in Imiquimod-Induced Psoriasis Models

2018 ◽  
Vol 2018 ◽  
pp. 1-8 ◽  
Author(s):  
Song Yi Lee ◽  
Suyeong Nam ◽  
Sungyun Kim ◽  
Ja Seong Koo ◽  
In Kee Hong ◽  
...  
Keyword(s):  
Skin Lesions ◽  
The Other ◽  
Epidermal Thickness ◽  
Artemisia Capillaris ◽  
Cream Formulation ◽  
Cumulative Score ◽  
Intracellular Adhesion Molecule ◽  
Psoriasis Therapy ◽  
Hematoxylin And Eosin ◽  
Hematoxylin And Eosin Staining

A cream formulation containing Artemisia capillaris (AC) extract (ACE) was developed for psoriasis therapy. Although ACE can be dissolved in organic solvents, its topical application is restricted because of toxicities. Therefore, a cream formulation was developed for the convenient and safe local application of ACE on skin lesions. The antipsoriatic properties of the ACE cream were evaluated using an imiquimod- (IMQ-) induced psoriasis-like mouse model. In psoriasis-like mouse models, the cumulative score (redness, thickness, and scaling) of the IMQ + ACE cream group was significantly lower than those of the other groups on day 4 (p < 0.05). The results of the hematoxylin and eosin staining of skin tissues revealed that the epidermal thickness value of the IMQ + ACE cream group was significantly lower than those of the other experimental groups (p < 0.05). The expression level of intracellular adhesion molecule-1 (ICAM-1), which indicates the leukocyte infiltration into the skin and subsequent interactions with keratinocytes, was also lower in the IMQ + ACE cream group than in the IMQ group. These results indicate that ACE cream formulation could be used safely and conveniently for psoriasis treatment.

Beclin 1, LC3, and p62 expression in paraquat-induced pulmonary fibrosis

2019 ◽  
Vol 38 (7) ◽  
pp. 794-802 ◽  
Author(s):  
G Xu ◽  
X Wang ◽  
H Yu ◽  
C Wang ◽  
Y Liu ◽  
...  
Keyword(s):  
Pulmonary Fibrosis ◽  
Light Chain ◽  
Lung Fibrosis ◽  
Beclin 1 ◽  
Related Protein ◽  
Protein Expressions ◽  
Hematoxylin And Eosin ◽  
Hematoxylin And Eosin Staining ◽  
Related Proteins

Paraquat (PQ) is a highly toxic herbicide to humans. Pulmonary fibrosis is one of the most typical features of PQ poisoning, which develops from several days to weeks after ingestion. However, the mechanism of fibrosis is still unclear. In this study, we aimed to determine expressions of autophagy-related markers Beclin 1, microtubule-associated protein light chain 3 (LC3), and p62 in PQ-poisoned lungs and to explore the role of autophagy in pulmonary fibrosis induced by PQ. We detected markers of lung fibrosis and expressions of autophagy-related protein in the specimens from eight fatal cases of PQ poisoning by hematoxylin and eosin staining, Masson’s trichrome staining, and immunohistochemistry. Based on the staining results of lung fibrosis, these cases were divided into two groups, fibrosis and non-fibrosis groups. The correlation between autophagy protein expressions and pulmonary fibrosis was examined. The results demonstrated that the autophagy-related proteins were significantly expressed in fibrosis group compared with the non-fibrosis group. There was a significantly positive correlation between these protein expressions and severity of lung fibrosis. In conclusion, autophagy dysfunction may be involved in lung fibrogenesis caused by PQ poisoning. This may be a promising clue for understanding the molecular mechanism underlying PQ-induced lung fibrosis and provide evidence for treating fibrosis by regulating the level of autophagy.

scholarly journals Use of Deep Learning to Develop and Analyze Computational Hematoxylin and Eosin Staining of Prostate Core Biopsy Images for Tumor Diagnosis

2020 ◽  
Vol 3 (5) ◽  
pp. e205111
Author(s):  
Aman Rana ◽  
Alarice Lowe ◽  
Marie Lithgow ◽  
Katharine Horback ◽  
Tyler Janovitz ◽  
...  
Keyword(s):  
Deep Learning ◽  
Core Biopsy ◽  
Tumor Diagnosis ◽  
Hematoxylin And Eosin ◽  
Hematoxylin And Eosin Staining

scholarly journals Morphometric Evaluation of Spermatogenic Cells and Seminiferous Tubules and Exploration of Luteinizing Hormone Beta Polypeptide in Testis of Datong Yak

Animals ◽  
2019 ◽  
Vol 10 (1) ◽  
pp. 66 ◽  
Author(s):  
Qudratullah Kalwar ◽  
Min Chu ◽  
Anum Ali Ahmad ◽  
Xuezhi Ding ◽  
Xiaoyun Wu ◽  
...  
Keyword(s):  
Quantitative Pcr ◽  
Developmental Stages ◽  
Seminiferous Tubules ◽  
Spermatogenic Cells ◽  
Sex Development ◽  
Significant Difference ◽  
Hematoxylin And Eosin ◽  
Hematoxylin And Eosin Staining ◽  
Morphometric Evaluation ◽  
Semi Quantitative Pcr

Histological examination of testes is essential for understanding infertility, sex development, and growth. Therefore, to understand the histomorphology of testes at different developmental stages, we performed hematoxylin and eosin staining of Yak testis. Our results revealed that the diameters of spermatogenic cells and their nuclei were significantly larger (p < 0.05) in the testis at six years compared to at six and 18 months. No significant difference was noted between 30 months and six years. The study was designed to compare the expression profile of LHB in Datong yak. The expression pattern of LHB was explored using quantitative PCR, semi-quantitative PCR, molecular bioinformatic, and Western blot analysis. Our observations indicated that expression of LHB was significantly higher (p < 0.05) in the testis of Datong yak. Western blotting indicated that the molecular mass of LHB protein was 16 kDa in yak. The protein encoded by yak LHB included conserved cysteine-knot domain regions. The high expression of LHB in testis indicated that LHB may be vital for the development of male gonads and the fertility of Datong yak.

scholarly journals STUDIES ON INFLUENZA INFECTION IN FERRETS BY MEANS OF FLUORESCEIN-LABELLED ANTIBODY

1955 ◽  
Vol 101 (6) ◽  
pp. 665-676 ◽  
Author(s):  
Ch'ien Liu
Keyword(s):  
Epithelial Cells ◽  
Influenza Infection ◽  
Bronchial Epithelium ◽  
Mediastinal Lymph Nodes ◽  
Viral Antigens ◽  
Antibody Staining ◽  
Hematoxylin And Eosin ◽  
Hematoxylin And Eosin Staining ◽  
Ciliated Epithelial Cells ◽  
Infectivity Titer

By means of fluorescein-labelled antibody staining, specific influenza viral antigens were seen in both the cytoplasm and the nucleus of infected ciliated epithelial cells covering the nasal turbinates of infected ferrets. Initially, only a small portion of the nasal epithelium showed fluorescence, and no appreciable abnormality of the cells could be detected by hematoxylin and eosin staining. The fluorescence soon spread to involve the entire epithelium, followed by desquamation coinciding with the onset of manifest illness. Pneumonia was seen in some of the infected ferrets, and in them, viral antigens were found in the bronchial epithelium and in the mediastinal lymph nodes. A rise of viral infectivity titer paralleled the observed spread of viral antigens. Many desquamated nasal epithelial cells and macrophages containing antigen were present in nasal smears. The finding would seem to offer a method for the rapid specific diagnosis of influenza infection.

Ontogeny of the skull of the Black Caiman (Melanosuchus niger) (Crocodylia: Alligatoridae)

2019 ◽  
Vol 97 (2) ◽  
pp. 142-155 ◽  
Author(s):  
L.G. Vieira ◽  
A.L.Q. Santos ◽  
L.Q.L. Hirano ◽  
L.T. Menezes-Reis ◽  
J.S. Mendonça ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Alcian Blue ◽  
Parietal Bone ◽  
Computed Tomography Imaging ◽  
Alizarin Red ◽  
Tomography Imaging ◽  
Jaw Bones ◽  
Hematoxylin And Eosin ◽  
Hematoxylin And Eosin Staining ◽  
Nasal Capsule

We describe the formation of the chondrocranium and the ossification pattern of the skull of the Black Caiman (Melanosuchus niger (Spix, 1825)). The embryos were cleared and double-stained with Alizarin Red S and Alcian Blue 8GX. Additionally, they were visualized by histological hematoxylin and eosin staining and computed tomography imaging. The chondrocranium of M. niger comprised the nasal capsule, orbitotemporal, and optic–occipital regions. Its development began at stage 9, with the chondrification of the acrochordal cartilage, trabeculae, and mandibular cartilage. The optic capsule was formed in the caudolateral portion of the chondrocranium at stage 13. The basal plate appeared at stage 14, with foramina for the hypoglossal. The chondrocranium was completely formed at stage 16. The first osteogenic events were noted at stage 13, in the bones, maxilla, jugal, postorbital, and pterygoid. The quadratojugal, prefrontal, frontal, and squamosal began their ossification at stage 14. The parietal bone began to ossify only at stage 20. The basisphenoid began at stage 15 and the parasphenoid began at stage 16. The jaw bones ossified between stages 13 and 16. The dermal elements started their ossification prior to the endochondral bones.

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