A histopathological analysis of spontaneous neoplastic and non-neoplastic lesions in aged male RccHan:WIST rats.

In this study, we describe spontaneous lesions found in 39 male RccHan:WIST rats used as a control in a carcinogenicity study. Neoplastic lesions were frequently seen in the endocrine system, such as pituitary adenomas in the pars distalis. This strain exhibited a high incidence of thymoma (10.3%), compared to other strains. We encountered an oligodendroglioma, a pituitary adenoma of the pars intermedia, and a prostate adenocarcinoma, which are comparatively rare in rats. While the variety and incidence of non-neoplastic lesions were similar to those in other strains, several interesting lesions occurred with relatively high incidence, including "harderianization" of the extraorbital lacrimal gland, common bile duct ectasia, and hyperplasia of pulmonary endocrine cells in the lung. Furthermore, comparative analyses demonstrated that the severity of chronic progressive nephropathy and murine progressive cardiomyopathy in RccHan:WIST rats was less than that in F344 rats. PMID: 32051666 [PubMed]
Source: Journal of Toxicologic Pathology - Category: Toxicology Tags: J Toxicol Pathol Source Type: research

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In this study, we established a mouse DCM model via streptozocin injection as evidenced by cell hypertrophy and cell apoptosis of myocardial tissue, and found that Malat1 expression was upregulated in the myocardium in DCM mice. Meanwhile, elevated expression of pro-apoptotic factors p53, p21, cleaved caspase 3, cleaved caspase 9 and BAX, and down-regulation of anti-apoptotic BCL-2 were observed in DCM myocardium. We further investigated the effect of Malat1 on cardiomyocytes under high glucose condition by silencing Malat1 with its specific short-hairpin RNA. Like in vivo, expression of Malat1 in cardiomyocytes was notabl...
Source: Experimental Animals - Category: Research Tags: Exp Anim Source Type: research
We report a unique case of acute esophageal necrosis in association with perforated acute cholecystitis and secondary Klebsiella pneumoniae bacteremia. An 83-year-old male with history of diabetes mellitus, dyslipidemia, ischemic cardiomyopathy and recent right hemicolectomy for colon adenocarcinoma presented to emergency department with acute epigastric pain and hematemesis. The patient appeared cachectic and dehydrated. He was afebrile and hemodynamically stable. Laboratory studies revealed anemia, leukocytosis, hyponatremia and hyperlactatemia. Esophagogastroduodenoscopy displayed characteristic features of acute esopha...
Source: Revista Espanola de Enfermedades Digestivas - Category: Gastroenterology Tags: Rev Esp Enferm Dig Source Type: research
Authors: Abdulle LE, Hao JL, Pant OP, Liu XF, Zhou DD, Gao Y, Suwal A, Lu CW Abstract Diabetes mellitus is a global issue with increasing incidence rate worldwide. In an uncontrolled case, it can advance to various organ-related complications leading to an increase in morbidity and mortality. Long non-coding RNA (lncRNA) Metastasis-associated lung adenocarcinoma transcript 1 (MALAT1) appears to be a fairly novel lncRNA that is relevant to diabetes and its role in diabetic-related diseases initiation and progression have long been a subject of attention to many scholars. The expression of MALAT1 is elevated in diffe...
Source: International Journal of Medical Sciences - Category: Biomedical Science Tags: Int J Med Sci Source Type: research
Among the differential diagnoses that should be considered in acute respiratory failure (ARF) are infectious processes, autoimmune diseases, interstitial pulmonary fibrosis, and pulmonary neoplasia. Timely diagnosis of lung neoplasia is complicated in the early stages. An opportune diagnosis, as well as the specific treatment, decrease mortality. ARF occurs 1 in 500 pregnancies and is most common during the postpartum period. Among the specific etiologies that cause ARF during pregnancy that must be considered are: (1) preeclampsia; (2) embolism of amniotic fluid; (3) peripartum cardiomyopathy; and (4) trophoblastic emboli...
Source: Case Reports in Oncology - Category: Cancer & Oncology Source Type: research
Publication date: April 2018 Source:Journal of Comparative Pathology, Volume 160 Author(s): M. Romanucci, M. Massimini, G. Aste, S.V.P. Defourny, P.E. Crisi, A. Boari, L. Della Salda A 12-year-old female European shorthair cat was presented with severe dyspnoea. Echocardiography revealed hypertrophic cardiomyopathy and pleural effusion. The cat died from acute decompensated left heart failure. At necropsy examination, the lungs were diffusely congested and firm, with multifocal grey areas and sparse haemorrhages. No solid masses were detected. Histopathology revealed a diffuse neoplastic proliferation characterized by irr...
Source: Journal of Comparative Pathology - Category: Pathology Source Type: research
Authors: Elena C, Giorgio M, Annik L, Giacomo F, Mariangela P Abstract Anthracyclines such as doxorubicin, daunorubicin, epirubicin, mitoxantrone and idarubicin, are powerful chemotherapeutic drugs used both in children and adult populations. Their properties made them particularly suitable for a large variety of neoplasms including breast adenocarcinoma, small cell lung cancer and acute leukemia. Early and late anthracycline-induced cardiotoxicity is a well-known phenomenon, and the incidence of heart failure in patients receiving doxorubicin is 2.2%, with a mortality rate over 60% at 2 years. Prognosis can b...
Source: Advances in Experimental Medicine and Biology - Category: Research Tags: Adv Exp Med Biol Source Type: research
We describe the case of a patient with advanced lung cancer and cardiomyopathy due to pemetrexed. A 59-year-old woman visited our hospital, and we found abnormal findings on a chest radiograph. She was diagnosed as having stage IV lung adenocarcinoma. Chemotherapy with cisplatin and pemetrexed every 3  weeks was initiated. After four cycles of chemotherapy, maintenance chemotherapy with pemetrexed was administered every 3 weeks. During the seventeenth cycle of pemetrexed, she had shortness of breath in her daily life. A chest radiograph showed an enlarged cardiothoracic ratio (66%), and the tra nsthoracic echocar...
Source: Investigational New Drugs - Category: Drugs & Pharmacology Source Type: research
CONCLUSIONS: This case suggests that SABR could have a role in the palliative treatment of small bowel cancers, with good toxicity profile, particularly in patients for whom surgical treatment is not a viable option. PMID: 28218383 [PubMed - as supplied by publisher]
Source: Tumori - Category: Cancer & Oncology Tags: Tumori Source Type: research
Takotsubo cardiomyopathy (TC) is characterized by a transient decrease in ejection fraction and a reversible left ventricular dysfunction. The pathophysiology of TC is not completely understood. Heterogeneous ...
Source: BMC Pediatrics - Category: Pediatrics Authors: Source Type: research
In this study, a PET camera was used to examine individual differences in the D2 system in a group consisting of 181 healthy individuals between the age of 64 and 68. All participants also had to take part in an all-inclusive performance test of the long-term episodic memory, working memory and processing speed along with an MRI assessment (which was used to measure the size of various parts of the brain). Researchers could see that the D2 system was positively linked to episodic memory, but not to working memory or to processing speed by relating PET registrations to the cognitive data. Researchers could also see that the...
Source: Fight Aging! - Category: Research Authors: Tags: Newsletters Source Type: blogs
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