Dietary Changes Involving Bifidobacterium longum and Other Nutrients Delays Chronic Kidney Disease Progression

2018 ◽  
Vol 47 (5) ◽  
pp. 325-332 ◽  
Author(s):  
Yuko Iwashita ◽  
Masaki Ohya ◽  
Mitsuru Yashiro ◽  
Tomohiro Sonou ◽  
Kazuki Kawakami ◽  
...  
Keyword(s):  
Chronic Kidney Disease ◽  
Kidney Disease ◽  
Gut Microbiota ◽  
Kidney Function ◽  
Sham Group ◽  
Control Diet ◽  
Bifidobacterium Longum ◽  
Inorganic Phosphorus ◽  
Mineral And Bone Disorder ◽  
Serious Adverse Events

Background: Recent studies suggest that prebiotic and/or probiotic treatments ameliorate kidney function in humans and animals by improving the gut environment. However, the gut microbiota and kidney disease interactions remain to be determined. This study investigated whether synbiotics modulate the gut microbiota and ameliorate kidney function using a rat model of chronic kidney disease (CKD). As uremic toxins are associated with CKD-related mineral and bone disorder, the secondary aim was to evaluate the relationship between synbiotics and secondary hyperparathyroidism (SHPT). Methods: 5/6 nephrectomy (Nx) rats were developed as the CKD model. Sham-operated (sham) rats were used as the control. To investigate the effectiveness of prebiotics (glutamine, dietary fiber, and oligosaccharide) and probiotics (Bifidobacterium longum strain; GFOB diet), rats were randomly assigned to 4 groups: Nx group fed the GFOB diet (n = 10); Nx group fed the control (CON) diet (n = 10); sham group fed the GFOB diet (n = 5); and sham group fed the control diet (n = 5). Blood, feces, and kidney samples were collected and analyzed. Results: Serum creatinine (Cre) and blood urea nitrogen in the Nx GFOB group were significantly lower than those in the Nx CON group. Serum indoxyl sulfate in the Nx GFOB group was lower than that in the Nx CON group, and significantly correlated with serum Cre. Inorganic phosphorus and intact parathyroid hormone in the Nx GFOB group were significantly lower than those in the Nx CON group. Conclusion: Improving the gut environment using synbiotics ameliorated kidney function and might be a pharmacological treatment for SHPT without any serious adverse events.

scholarly journals The Association between Gut Microbiota and Uremia of Chronic Kidney Disease

2020 ◽  
Vol 8 (6) ◽  
pp. 907 ◽  
Author(s):  
Ji Eun Kim ◽  
Hyo-Eun Kim ◽  
Ji In Park ◽  
Hyunjeong Cho ◽  
Min-Jung Kwak ◽  
...  
Keyword(s):  
Chronic Kidney Disease ◽  
Kidney Disease ◽  
Gut Microbiota ◽  
Kidney Function ◽  
Kidney Diseases ◽  
Toxin Production ◽  
Positive Interactions ◽  
Uremic Toxin ◽  
Serum Concentrations ◽  
Pyruvate Metabolism

Chronic kidney disease (CKD)-associated uremia aggravates—and is aggravated by—gut dysbiosis. However, the correlation between CKD severity and gut microbiota and/or their uremic metabolites is unclear. We enrolled 103 CKD patients with stage 1 to 5 and 46 healthy controls. We analyzed patients’ gut microbiota by MiSeq system and measured the serum concentrations of four uremic metabolites (p-cresyl sulfate, indoxyl sulfate, p-cresyl glucuronide, and trimethylamine N-oxide) by liquid chromatography–tandem mass spectrometry. Serum concentrations of the uremic metabolites increased with kidney function deterioration. Gut microbial diversity did not differ among the examined patient and control groups. In moderate or higher stage CKD groups, Oscillibacter showed positive interactions with other microbiota, and the proportions of Oscillibacter were positively correlated with those of the uremic metabolites. The gut microbiota, particularly Oscillibacter, was predicted to contribute to pyruvate metabolism which increased with CKD progression. Relative abundance of Oscillibacter was significantly associated with both serum uremic metabolite levels and kidney function. Predicted functional analysis suggested that kidney-function-associated changes in the contribution of Oscillibacter to pyruvate metabolism in CKD may greatly affect the gut environment according to kidney function, resulting in dysbiosis concomitant with uremic toxin production. The gut microbiota could be associated with uremia progression in CKD. These results may provide basis for further metagenomics analysis of kidney diseases.

scholarly journals Adverse Effects of Autoclaved Diets on the Progression of Chronic Kidney Disease and Chronic Kidney Disease-Mineral Bone Disorder in Rats

2020 ◽  
Vol 51 (5) ◽  
pp. 381-389
Author(s):  
Annabel Biruete ◽  
Shruthi Srinivasan ◽  
Kalisha D. O’Neill ◽  
Colby J. Vorland ◽  
Kathleen M. Hill Gallant ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
Chronic Kidney Disease ◽  
Kidney Disease ◽  
Kidney Function ◽  
Fibroblast Growth Factor 23 ◽  
Laboratory Animals ◽  
Casein Diet ◽  
Mineral And Bone Disorder ◽  
Bone Disorder ◽  
And Oxidative Stress

Background: Autoclaving rodent diets is common in laboratory animals, but autoclaving increases the formation of dietary advanced glycation end-products (AGE). We studied the effect of autoclaved (AC) diet alone or in combination with a diet high in bioavailable phosphorus on biochemistries of chronic kidney disease-mineral and bone disorder (CKD-MBD), intestinal gene expression, and oxidative stress. Methods: Male CKD rats (Cy/+) and normal littermates were fed 1 of 3 diets: AC 0.7% phosphorus grain-based diet for 28 weeks (AC); AC diet for 17 weeks followed by non-autoclaved (Non-AC) 0.7% phosphorus casein diet until 28 weeks (AC + Casein); or Non-AC diet for 16 weeks followed by a Non-AC purified diet until 30 weeks (Non-AC + Casein). Results: AC diets contained ~3× higher AGEs and levels varied depending on the location within the autoclave. Rats fed the AC and AC + Casein diets had higher total AGEs and oxidative stress, irrespective of kidney function. Kidney function was more severely compromised in CKD rats fed AC or AC + Casein compared to Non-AC + Casein. There was a disease-by-diet interaction for plasma phosphorus, parathyroid hormone, and c-terminal fibroblast growth factor-23, driven by high values in the CKD rats fed the AC + Casein diet. Compared to Non-AC + Casein, AC and AC + Casein-fed groups had increased expression of receptor of AGEs and intestinal NADPH oxidase dual oxidase-2, independent of kidney function. Conclusions: Autoclaving rodent diets impacts the progression of CKD and CKD-MBD, highlighting the critical importance of standardizing diets in experiments.

THE ROLE OF FBROBLAST GROWTH FACTOR 23 (FGF 23) IN THE MINERAL AND BONE DISORDER (MBD) OF THE PATENTS WITH CHRONIC KIDNEY DISEASE

2016 ◽  
pp. 9-14
Author(s):  
Huu Vu Quang Nguyen ◽  
Tam Vo
Keyword(s):  
Chronic Kidney Disease ◽  
Growth Factor ◽  
Kidney Disease ◽  
Kidney Function ◽  
Mineral Metabolism ◽  
Fibroblast Growth Factor 23 ◽  
Normal Kidney ◽  
Mineral And Bone Disorder ◽  
Normal Kidney Function ◽  
Fgf 23

Fibroblast growth factor 23 (FGF23) is a key regulator of phosphorus metabolism whose effects in patients with chronic kidney disease (CKD) have only recently begun to be appreciated. Recent study of this phosphaturic hormone has revealed new path-ways of mineral regulation in both individuals with normal kidney function and in patients with CKD. While the effects of FGF23 on mineral metabolism in CKD appears to be similar to its effects in individuals with normal kidney function, elevated levels of the protein in the CKD population have also been linked to kidney disease progression, altered skeletal histology, and increased mortality rates, relationships that have not been examined in the general population.Thus, potential differences in FGF23 metabolism accompany the elevated levels found in CKD patients and, although the exact pathophysiological consequences remain mostly unknown, elevated FGF23 levels appear to contribute to major complications of CKD that plague both adults and children. Key words: FGF23, chronic kidney

scholarly journals Management of acute and post-operative pain in chronic kidney disease

F1000Research ◽  
2013 ◽  
Vol 2 ◽  
pp. 28 ◽  
Author(s):  
Malvinder S Parmar ◽  
Kamalpreet S Parmar
Keyword(s):  
Chronic Kidney Disease ◽  
Pain Relief ◽  
Kidney Disease ◽  
Kidney Function ◽  
Standard Dose ◽  
Serious Adverse Events ◽  
Adequate Pain Relief ◽  
Post Operative Pain ◽  
Analgesic Agents ◽  
Morbid Conditions

Chronic kidney disease is common and patients with many co-morbid conditions frequently have to undergo surgical procedures and, therefore, require effective pain management. The pharmacokinetics of various analgesic agents are not well studied in patients with chronic kidney disease and the risk of accumulation of the main drug or their metabolites, resulting in serious adverse events, is a common scenario on medical and surgical wards. It is common for these patients to be cared for by 'non-nephrologists' who often prescribe the standard dose of the commonly used analgesics, without taking into consideration the patient's kidney function. It is important to recognize the problems and complications associated with the use of standard doses of analgesics, and highlight the importance of adjusting analgesic dosage based on kidney function to avoid complications while still providing adequate pain relief.

Impact of Direct Acting Antiviral Agents on kidney function in Hepatitis C Virus infected patients with chronic kidney disease

QJM ◽  
2021 ◽  
Vol 114 (Supplement_1) ◽  
Author(s):  
Iman I Sarhan ◽  
Osama M Mohamed ◽  
Hayam A Hebah ◽  
Ossama A Ahmed ◽  
Lina E Khedr ◽  
...  
Keyword(s):  
Chronic Kidney Disease ◽  
Kidney Disease ◽  
Adverse Events ◽  
Kidney Function ◽  
Antiviral Agents ◽  
Kidney Injury ◽  
Complete Recovery ◽  
Study Groups ◽  
Serious Adverse Events ◽  
Direct Acting Antiviral

Abstract Introduction Despite the significant link between HCV and CKD progression, most of the patients with CKD infected with HCV remain untreated, because they have historically been difficult to treat due to common adverse effects associated with interferon (IFN), ribavirin, and first generation protease inhibitors. Recently, there have been major advancements in the treatment of HCV with the development of new directacting antivirals (DAAs). Objectives To evaluate the safety and efficacy of DAAs and their impact on kidney function in CKD patients. Patients and Methods We conducted a prospective observational study on 100 CKD patients stages 3-4, receiving treatment for HCV at MASRI (faculty of Medicine Ain Shams University Research Institute), with two different DAAs regimens, completed over six months follow up. Kidney function was followed during and after treatment. Results Sustained virological response (SVR) was achieved in all patients. AKI (acute kidney injury) was uncommon; it occurred in three (3%) patients, out of them, two patients showed complete recovery. Adverse events were common (43%), but serious adverse events were uncommon (2%).Improvement of eGFR (8-15 ml/min/1.73 m2) and proteinuria was found in both study groups. Conclusion DAAs were effective and welltolerated for HCV infected patients with stage 3-4 chronic kidney disease, where viral clearance caused improvement in eGFR and proteinuria.

scholarly journals Lipocalin 2 stimulates bone fibroblast growth factor 23 production in chronic kidney disease

Bone Research ◽  
2021 ◽  
Vol 9 (1) ◽  
Author(s):  
Guillaume Courbon ◽  
Connor Francis ◽  
Claire Gerber ◽  
Samantha Neuburg ◽  
Xueyan Wang ◽  
...  
Keyword(s):  
Chronic Kidney Disease ◽  
Growth Factor ◽  
Kidney Disease ◽  
Iron Deficiency ◽  
Fibroblast Growth Factor ◽  
Kidney Function ◽  
Fibroblast Growth Factor 23 ◽  
Left Ventricular ◽  
Fibroblast Growth ◽  
Lipocalin 2

AbstractBone-produced fibroblast growth factor 23 (FGF23) increases in response to inflammation and iron deficiency and contributes to cardiovascular mortality in chronic kidney disease (CKD). Neutrophil gelatinase-associated lipocalin (NGAL or lipocalin 2; LCN2 the murine homolog) is a pro-inflammatory and iron-shuttling molecule that is secreted in response to kidney injury and may promote CKD progression. We investigated bone FGF23 regulation by circulating LCN2. At 23 weeks, Col4a3KO mice showed impaired kidney function, increased levels of kidney and serum LCN2, increased bone and serum FGF23, anemia, and left ventricular hypertrophy (LVH). Deletion of Lcn2 in CKD mice did not improve kidney function or anemia but prevented the development of LVH and improved survival in association with marked reductions in serum FGF23. Lcn2 deletion specifically prevented FGF23 elevations in response to inflammation, but not iron deficiency or phosphate, and administration of LCN2 increased serum FGF23 in healthy and CKD mice by stimulating Fgf23 transcription via activation of cAMP-mediated signaling in bone cells. These results show that kidney-produced LCN2 is an important mediator of increased FGF23 production by bone in response to inflammation and in CKD. LCN2 inhibition might represent a potential therapeutic approach to lower FGF23 and improve outcomes in CKD.

Sign in / Sign up

Export Citation Format

Share Document