COMPARATIVE CHARACTERISTICS OF RENAL BLOOD FLOW IN PATIENTS WITH CHRONIC RENAL FAILURE DEVELOPED AS A RESULT OF MYELOMA NEPHROPATHY AND IN PRIMARY NEPHROLOGY PATHOLOGY

2016 ◽  
Vol 1 (62) ◽  
pp. 53-58
Author(s):  
Наталья Макарова ◽  
Natalya Makarova
Keyword(s):  
Multiple Myeloma ◽  
Renal Failure ◽  
Blood Flow ◽  
Chronic Renal Failure ◽  
Kidney Disease ◽  
Flow Velocity ◽  
Renal Blood Flow ◽  
Vascular Resistance ◽  
Mean Flow ◽  
Myeloma Nephropathy

A comparative analysis of the indicators of renal hemodynamics in patients with chronic renal failure/chronic kidney disease (CRF/CKD) developed against myeloma nephropathy (group 1) and with primary kidney disease (group 2) was done. 20 patients were included in the first group, 14 patients were in the second one, and in most cases there was Stage 3 CRF/CKD. There were analyzed the following indicators of renal blood flow: peak systolic velocity, end diastolic velocity, mean flow velocity throughout the entire cardiac cycle, resistive index and pulsation index. Circulation figures were recorded at the level of basic, segmental, interlobar, arc, interlobular renal arteries. It is concluded that violations of renal blood flow and vascular resistance in patients with multiple myeloma complicated by chronic renal failure are primarily due to CKD itself. The differences in the two groups of patients with CRF/CKD were only about the average level in the parenchymal blood flow velocity (interlobular, arcuate, interlobar arteries); at myeloma nephropathy it was significantly reduced in comparison with the control group and patients with CRF/CKD without hemoblastosis. The rest velocity parameters were significantly reduced and vascular resistance indices were increased in comparison with the control and did not differ in groups of patients with CRF/CKD. Thus, hemodynamic changes at the level of parenchyma are the most important for patients with multiple myeloma, which suggests more severe violations of kidneys in these patients with the complication of CRF.

High-NaCl diet impairs dynamic renal blood flow autoregulation in rats with adenine-induced chronic renal failure

2014 ◽  
Vol 306 (6) ◽  
pp. R411-R419 ◽  
Author(s):  
Aso Saeed ◽  
Gerald F. DiBona ◽  
Elisabeth Grimberg ◽  
Lisa Nguy ◽  
Minne Line Nedergaard Mikkelsen ◽  
...  
Keyword(s):  
Renal Failure ◽  
Blood Flow ◽  
Chronic Renal Failure ◽  
Arterial Pressure ◽  
Renal Blood Flow ◽  
Low Frequency ◽  
Organ Injury ◽  
Myogenic Response ◽  
Frequency Range ◽  
Renal Blood Flow Autoregulation

This study examined the effects of 2 wk of high-NaCl diet on kidney function and dynamic renal blood flow autoregulation (RBFA) in rats with adenine-induced chronic renal failure (ACRF). Male Sprague-Dawley rats received either chow containing adenine or were pair-fed an identical diet without adenine (controls). After 10 wk, rats were randomized to either remain on the same diet (0.6% NaCl) or to be switched to high 4% NaCl chow. Two weeks after randomization, renal clearance experiments were performed under isoflurane anesthesia and dynamic RBFA, baroreflex sensitivity (BRS), systolic arterial pressure variability (SAPV), and heart rate variability were assessed by spectral analytical techniques. Rats with ACRF showed marked reductions in glomerular filtration rate and renal blood flow (RBF), whereas mean arterial pressure and SAPV were significantly elevated. In addition, spontaneous BRS was reduced by ∼50% in ACRF animals. High-NaCl diet significantly increased transfer function fractional gain values between arterial pressure and RBF in the frequency range of the myogenic response (0.06–0.09 Hz) only in ACRF animals (0.3 ± 4.0 vs. −4.4 ± 3.8 dB; P < 0.05). Similarly, a high-NaCl diet significantly increased SAPV in the low-frequency range only in ACRF animals. To conclude, a 2-wk period of a high-NaCl diet in ACRF rats significantly impaired dynamic RBFA in the frequency range of the myogenic response and increased SAPV in the low-frequency range. These abnormalities may increase the susceptibility to hypertensive end-organ injury and progressive renal failure by facilitating pressure transmission to the microvasculature.

Effects of Hachimi-jio-gan (Ba-wei-di-huang-wan) on Blood Flow in the Human Central Retinal Artery

2003 ◽  
Vol 31 (03) ◽  
pp. 425-435 ◽  
Author(s):  
Hideyuki Isobe ◽  
Kazuhiko Yamamoto ◽  
Jong-Chol Cyong
Keyword(s):  
Blood Flow ◽  
Flow Velocity ◽  
Vascular Resistance ◽  
Eye Diseases ◽  
Central Retinal Artery ◽  
Mean Flow ◽  
Positive Effects ◽  
Before And After ◽  
Retinal Artery ◽  
Blood Flow Velocities

Hachimi-jio-gan (HJG), a chinese herbal formula, and a placebo were given to 12 healthy adults, and the changes in blood flow in the central retinal artery were observed with the latest ultrasonic diagnosis device before and after administration. After administration of HJG, the systolic flow velocity, diastolic flow velocity and mean flow velocity in the central retinal artery showed significant increases. No change was observed in vascular resistance. The subjects deemed suitable for use of HJG showed remarkable increases in blood flow. No changes in blood flow velocities and vascular resistance were observed after administration of the placebo. HJG is frequently used in the aged, often with eye diseases such as cataract. It has been reported that a decrease of blood flow in the central retinal artery becomes more marked in proportion to the progress of various eye diseases. As increases in blood flow were obvious in the cases that were treated with HJG, it is suggested that increases in blood flow in the central retinal artery due to HJG give direct evidence supporting the positive effects of HJG on eye diseases.

scholarly journals Endothelin-A Receptor Antagonism Reduces Blood Pressure and Increases Renal Blood Flow in Hypertensive Patients With Chronic Renal Failure

Circulation ◽  
2004 ◽  
Vol 109 (9) ◽  
pp. 1186-1193 ◽  
Author(s):  
Jane Goddard ◽  
Neil R. Johnston ◽  
Malcolm F. Hand ◽  
Allan D. Cumming ◽  
Ton J. Rabelink ◽  
...  
Keyword(s):  
Blood Pressure ◽  
Renal Failure ◽  
Blood Flow ◽  
Chronic Renal Failure ◽  
Renal Blood Flow ◽  
Hypertensive Patients ◽  
Receptor Antagonism ◽  
Endothelin A Receptor ◽  
Endothelin A

Avaliação da Resiliência em Pacientes com Insuficiência Renal Crônica Submetidos à Hemodiálise / Assessment of Resilience in Patients With Chronic Kidney Disease Undergoing Hemodialysis

1970 ◽  
Vol 6 (1) ◽  
pp. 5-13
Author(s):  
Renata Izabel dos Santos ◽  
Otávia Regina Souza Costa
Keyword(s):  
Chronic Kidney Disease ◽  
Renal Failure ◽  
Health Status ◽  
Chronic Renal Failure ◽  
Kidney Disease ◽  
Renal Insufficiency ◽  
Social Economic ◽  
Descriptive Study ◽  
Psychological Resilience ◽  
Resilience Scale

RESUMOObjetivo: Avaliar o nível de resiliência dos portadores de insuficiência renal crônica em tratamento de hemodiálise. Materiais e Métodos: Estudo prospectivo, quantitativo e de abordagem descritiva. A amostra foi constituída por 61 pacientes em tratamento dialítico. Para obtenção dos resultados, foi utilizada a escala de resiliência, desenvolvida por Wagnild e Young (1993) e adaptada por Pesce et al., (2005). Foi aplicado, também, um questionário para caracterização pessoal, familiar, social, econômica e de saúde do grupo. Resultados: Foi constatado que 61% dos pacientes apresentaram tendência à resiliência. O gênero masculino obteve maior pontuação, sugerindo maior tendência à resiliência, bem como os pacientes que são praticantes de uma religião.  Conclusão: Os resultados assinalam que os pacientes em tratamento dialítico no hospital apresentam capacidade à resiliência, o que sugere melhor adaptação ao tratamento.Palavras-chave: Avaliação, Resiliência psicológica, Insuficiência renal crônica.ABSTRACTObjective: To evaluate de the level of resilience in patients with chronic renal failure undergoing dialysis. Materials and Methods: Prospective, quantitative and descriptive study. The sample consisted of 61 patients on dialysis. To obtain the results we used Resilience Scale developed by Wagnild and Young (1993) and adapted by Pesce et al., (2005). A questionnaire to characterize personal, familiar, social, economic and health status was applied. Results: It was found that 61% of patients showed trend to resilience. Males had higher scores, suggesting more likelihood to resilience, as well as patients who were practitioners of a religion. Conclusion: The results indicate that the majority of patients on dialysis have capability of resilience, which suggests better adaptation to treatment.Keywords: Evaluation, Psychological resilience, Chronic renal insufficiency.

Chronic renal failure in a mouse model of human adenine phosphoribosyltransferase deficiency

1998 ◽  
Vol 275 (1) ◽  
pp. F154-F163 ◽  
Author(s):  
Michael G. Stockelman ◽  
John N. Lorenz ◽  
Frost N. Smith ◽  
Gregory P. Boivin ◽  
Amrik Sahota ◽  
...  
Keyword(s):  
Renal Failure ◽  
Chronic Renal Failure ◽  
Kidney Disease ◽  
Creatinine Clearance ◽  
Renal Damage ◽  
Male Mice ◽  
Adenine Phosphoribosyltransferase ◽  
Disease Treatment ◽  
Significant Impairment ◽  
Normal Males

In humans, adenine phosphoribosyltransferase (APRT, EC 2.4.2.7 ) deficiency can manifest as nephrolithiasis, interstitial nephritis, and chronic renal failure. APRT catalyzes synthesis of AMP from adenine and 5-phosphoribosyl-1-pyrophosphate. In the absence of APRT, 2,8-dihydroxyadenine (DHA) is produced from adenine by xanthine dehydrogenase (XDH) and can precipitate in the renal interstitium, resulting in kidney disease. Treatment with allopurinol controls formation of DHA stones by inhibiting XDH activity. Kidney disease in APRT-deficient mice resembles that seen in humans. By age 12 wk, APRT-deficient male mice are, on average, mildly anemic and smaller than normal males. They have extensive renal interstitial damage (assessed by image analysis) and elevated blood urea nitrogen (BUN), and their creatinine clearance rates, which measure excretion of infused creatinine as an estimate of glomerular filtration rate (GFR), are about half that of wild-type males. APRT-deficient males treated with allopurinol in the drinking water had normal BUN and less extensive visible renal damage, but creatinine clearance remained low. Throughout their lifespans, homozygous null female mice manifested significantly less renal damage than homozygous null males of the same age. APRT-deficient females showed no significant impairment of GFR at age 12 wk. Consequences of APRT deficiency in male mice are more pronounced than in females, possibly due to differences in rates of adenine or DHA synthesis or to sex-determined responses of the kidneys.

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