High Dose and Delayed Treatment with Bile Acids Ineffective in RML Prion-Infected Mice.

High Dose and Delayed Treatment with Bile Acids Ineffective in RML Prion-Infected Mice. Antimicrob Agents Chemother. 2018 May 21;: Authors: Norman G, Campeau J, Sim VL Abstract Prion diseases are a group of neurodegenerative diseases associated with the misfolding of the cellular prion protein (PrPC) into the infectious form (PrPSc). There are currently no treatments for prion disease. Bile acids have the ability to protect hepatocytes from apoptosis and are neuroprotective in animal models of other protein folding neurodegenerative diseases including Huntington's, Parkinson's, and Alzheimer's disease. Importantly, bile acids are approved for clinical use in patients with cirrhosis, and have recently been shown to be safe and possibly effective in pilot trials of patients with amyotrophic lateral sclerosis (ALS). We previously reported that the bile acid, ursodeoxycholic acid (UDCA), given early in disease, prolonged incubation periods in male RML-infected mice. Here we expand on this result to include tauro-ursodeoxycholic acid (TUDCA) treatment trials and delayed UDCA treatment. We demonstrate that, despite a high dose of TUDCA given early in disease, there was no significant difference in incubation periods between treated and untreated cohorts, regardless of sex. In addition, delayed treatment with a high dose of UDCA resulted in a significant shortening of the average survival time for both male and female mice when compared to their sex-matched con...
Source: Antimicrobial Agents and Chemotherapy - Category: Microbiology Authors: Tags: Antimicrob Agents Chemother Source Type: research

Related Links:

Objective The aim was to perform exploratory research on the application of technetium phytate (99mTc-Phy) portal perfusion index (PPI) imaging in predicting the complications of hepatitis B cirrhosis and their severity. Patients and methods A total of 65 hepatitis B cirrhosis patients were stratified, respectively, into three groups from classes A to C according to Child–Pugh scores and five groups from stages 1 to 5 according to the five-stage prognostic system. PPIs were compared and analyzed, respectively, among the three and five groups. The correlations between PPIs and major biochemical indices of liver f...
Source: Nuclear Medicine Communications - Category: Nuclear Medicine Tags: Original Articles Source Type: research
Publication date: Available online 15 August 2018Source: Progress in Neuro-Psychopharmacology and Biological PsychiatryAuthor(s): Angélica Torres-Berrio, Mauricio O. Nava-MesaAbstractCognitive and emotional impairment are a serious consequence of stress exposure and are core features of neurological and psychiatric conditions that involve memory disorders. Indeed, acute and chronic stress are high-risk factors for the onset of posttraumatic stress disorder (PTSD) and Alzheimer’s disease (AD), two devastating brain disorders associated with memory dysfunction. Besides the sympathetic nervous system and the hypo...
Source: Progress in Neuro Psychopharmacology and Biological Psychiatry - Category: Psychiatry Source Type: research
Authors: Tanaka H, Hijioka S, Iwaya H, Mizuno N, Kuwahara T, Okuno N, Ito A, Kuraoka N, Matsumoto S, Obata M, Kurita Y, Yasuda M, Shimizu Y, Kuroda H, Sato Y, Haneda M, Sasaki E, Yatabe Y, Hara K Abstract A 20-year old man was diagnosed with fibrolamellar hepatocellular carcinoma (FLHCC) with multiple lung metastases, and chemotherapy with FOLFOX was administered. Contrast enhanced CT after 3 cycles of FOLFOX showed no disease progression. We therefore performed surgical resection and radiofrequency ablation of the liver lesions and lung metastases, after obtaining the patient's informed consent. The liver lesions ...
Source: Internal Medicine - Category: Internal Medicine Tags: Intern Med Source Type: research
Authors: Ishii S, Tamiya A, Taniguchi Y, Tanaka T, Abe Y, Isa SI, Tsuyuguchi K, Suzuki K, Atagi S Abstract Nivolumab has become the standard second-line chemotherapy for non-small cell lung cancer. A 73-year-old man with stage IV non-small cell lung cancer received 6 cycles of chemotherapy with nab-paclitaxel/carboplatin/bevacizumab followed by 11 cycles of nab-paclitaxel/bevacizumab; however, treatment was stopped due to pneumothorax. One year after therapy started, a nodule appeared in the left upper lung and increased in size. Mycobacterium abscessus subsp. massiliense disease was diagnosed by a sputum analysis....
Source: Internal Medicine - Category: Internal Medicine Tags: Intern Med Source Type: research
We describe the first case of histologically-confirmed NEC caused by S. maltophilia accompanied by bacteremia and pneumonia after salvage chemotherapy for acute myeloid leukemia relapse following a second hematopoietic stem cell transplantation. S. maltophilia should be included as a pathogenic organism of NEC in severely immunocompromised patients to prevent a delayed diagnosis, which carries a high risk of inappropriate antimicrobial selection and fatal outcome. PMID: 30101922 [PubMed - as supplied by publisher]
Source: Internal Medicine - Category: Internal Medicine Tags: Intern Med Source Type: research
Authors: Kimura S, Ohkawara H, Ogawa K, Tanaka M, Sano T, Harada-Shirado K, Takahashi H, Ueda K, Shichishima-Nakamura A, Matsumoto H, Ikeda K, Kazama JJ, Hashimoto Y, Ikezoe T Abstract Light chain deposition disease (LCDD) is a rare systemic disorder caused by the deposition of light chain immunoglobulins, which often results in renal impairment associated with either nephrotic syndrome or asymptomatic proteinuria. B-cell neoplasms, such as multiple myeloma and lymphoproliferative disorders, are well-known underlying diseases in LCDD. Some chemotherapy regimens have been reported, but both evidence-based treatment ...
Source: Internal Medicine - Category: Internal Medicine Tags: Intern Med Source Type: research
Authors: Kimura A, Tsuji M, Isogai T, Nagata K, Kato K, Hisagi M, Nonaka T, Ninomiya M, Kiriu T, Tanaka H, Tejima T Abstract A 43-year-old woman presented with worsening shortness of breath and lower-extremity edema. Echocardiography and computed tomography showed obstruction of blood flow due to a mass filling the right atrium. Emergency surgery was performed for circulatory failure. Primary cardiac rhabdomyosarcoma was diagnosed based on a histological examination. The patient died about two months after the diagnosis despite surgical excision and radiation therapy. The poor prognosis may have resulted from the g...
Source: Internal Medicine - Category: Internal Medicine Tags: Intern Med Source Type: research
Authors: Nakatake R, Ishizaki M, Ishida M, Matsui K, Kawaguchi Y, Kaibori M Abstract Primary retroperitoneal serous adenocarcinoma (PRSA) is a rare malignancy of which only seven cases have been reported in the literature. The clinical features and outcomes of PRSA aren't well understood. We herein report a case of PRSA with liver metastasis in a 74-year-old woman who was treated with surgical excision. The tumor cells were positive for estrogen receptor, Wilms tumor 1, PAX8, p53, and cytokeratin AE1/AE3. The final diagnosis was PRSA and liver metastasis. The pathological features of PRSA resemble those of ovarian ...
Source: Internal Medicine - Category: Internal Medicine Tags: Intern Med Source Type: research
Authors: Yoshida N, Kanno A, Masamune A, Nabeshima T, Hongo S, Miura S, Takikawa T, Hamada S, Kikuta K, Kume K, Ueno M, Shimosegawa T Abstract A 79-year-old woman was referred for pancreatic tail cancer with multiple liver metastases. The pancreatic tail tumor was diagnosed as acinar cell carcinoma (ACC) histologically by endoscopic ultrasound-guided fine-needle aspiration. Because of multiple liver metastases, S-1 chemotherapy was administered, resulting in a partial response to chemotherapy one year later. After approximately three years, liver atrophy and esophageal varices developed. We suspected S-1 as the cau...
Source: Internal Medicine - Category: Internal Medicine Tags: Intern Med Source Type: research
Authors: Iemura T, Oba A, Matsui M, Mano C, Kawabata N, Horisawa Y, Miyahara Y, Itoh M Abstract A 64-year-old woman with lymphoma-associated demyelinating neuropathy was treated by 6 cycles of R-CHOP with intravenous immunoglobulin in the first 2 cycles. We noted substantial improvement in the findings of a nerve conduction study (NCS) after the first cycle, followed by more protracted improvement during the second to sixth cycles. The improvement of the neurological symptoms paralleled the findings of the NCS. Our case provides important information for understanding the etiology and optimization of treatments for...
Source: Internal Medicine - Category: Internal Medicine Tags: Intern Med Source Type: research
More News: ALS | Alzheimer's | Bile | Brain | Chemotherapy | Cirrhosis | Huntington's Disease | Microbiology | Neurology | Parkinson's Disease