Is the dendritic organ of the striped eel catfish Plotosus lineatus an ammonia excretory organ?

2020 ◽  
Vol 241 ◽  
pp. 110640
Author(s):  
Salman Malakpour Kolbadinezhad ◽  
João Coimbra ◽  
Jonathan M. Wilson
Keyword(s):  
Excretory Organ

Risk for death increasing with cardiovascular chronic gout patients associated with febuxostat

2020 ◽  
Vol 10 (1) ◽  
pp. 14-17
Author(s):  
Ramachandran K ◽  
Rajesh Yadav ◽  
Sumitra Devkota
Keyword(s):  
Liver Injury ◽  
Associate Degree ◽  
Medical Attention ◽  
Uridine Diphosphate ◽  
Therapeutic Result ◽  
Pyrimidine Synthesis ◽  
Chronic Gout ◽  
Excretory Organ ◽  
Outcomes Study ◽  
Coronary Failure

Febuxostat used for the treatment of patients with arthritis littered with Hyperuricemia and is utilized in its Chronic Management. a number of the internal organ adverse effects have diode to the employment of febuxostat replaced with with allopurinol drug. Febuxostat, associate degree compound accelerator matter, achieves its therapeutic result by decreasing humour acid. At therapeutic concentrations it is not expected that Febuxostat will inhibit different enzymes which are involved in purine and pyrimidine synthesis and their metabolism. Metabolism of Febuxostat is done by conjugation via uridine diphosphate glucuronosyltransferase (UGT) enzymes and also by UGT1A1, UGT1A3, UGT1A9, and UGT2B7 and reaction via hemoprotein P450 (CYP) enzymes as well as CYP1A2, 2C8 and 2C9 and non-P450 enzymes. Febuxostat is eliminated primarily through each viscus and excretory organ pathways. Febuxostat could cause heart issues that may result in coronary failure, could cause issues within the blood vessels that visit your brain. this could conjointly result in stroke, urarthritis flare-ups and Liver injury. Some facet effects of febuxostat could occur that sometimes don't would like medical attention. We conclude from our review, vessel Death urarthritis patients with established vessel (CV) illness treated with febuxostat had a better rate of CV death compared to those treated with allopurinol drug in a very CV outcomes study.

Étude De La Fantasmatique De Patients Soumis À La Greffe Renale

1972 ◽  
Vol 17 (1) ◽  
pp. 11-15 ◽  
Author(s):  
J. C. Crombez ◽  
P. Lefebvre
Keyword(s):  
Body Image ◽  
Renal Transplantation ◽  
Clinical Outcome ◽  
Clinical Significance ◽  
Mental Representation ◽  
Body Part ◽  
Life And Death ◽  
Excretory Organ ◽  
Complex Phenomena ◽  
The Impact

This paper is part of an ongoing study of the psychiatric aspects of renal transplantation at Notre-Dame Hospital in Montreal, and deals specifically with the clinical significance of the patient's fantasies concerning the acquisition of a kidney. Fantasy material concerning the issues of life and death, the fantasies linking the acquired organ to libidinal drives and those concerning the impact of transplantation upon body image are examined. Patients defend against anxieties concerning living and dying by denial. Fantasies are described which suggest that transplantation is experienced on the genital level as a rephallicisation of doubtful outcome, following the castrative effect of the illness and hemodialysis. It was confirmed also that the archaic mental representation of the kidney was far more encompassing than that of a mere excretory organ, and thus the vicissitudes of the process of acceptance of the grafted body part appear as very complex phenomena which can have a bearing on clinical outcome.

scholarly journals Memoirs: On the Nephridiostome of Lumbricus

1932 ◽  
Vol s2-75 (297) ◽  
pp. 165-179
Author(s):  
EDWIN S. GOODRICH
Keyword(s):  
Connective Tissue ◽  
Lumbricus Terrestris ◽  
Coelomic Epithelium ◽  
Lower Lip ◽  
Excretory Organ ◽  
Marginal Cells ◽  
Straightforward Interpretation

The structure of the nephridiostome of Lumbricus terrestris L. is described, including the anatomical relations of canal, gutter, central, and marginal cells and their cytological characters. The extent and relation of the lower lip to other parts are also described. An account of the development of the nephridium is given from the stage when the rudiment still bears a single large ‘funnel-cell’ bulging forwards through the septum into the coelom. The whole nephridiostome (excluding the covering of coelomic epithelium and the connective tissue) is shown to arise from the nephridial rudiment, wholely or partly from that part of the funnel-rudiment which is derived from the ‘funnel-cell’. Upper, lateral, and lower lips are all developed from the funnel rudiment in which the lumen becomes pierced. There is no evidence that the coelomic epithelium contributes any part of the true nephridiostome. The view sometimes put forward that the excretory organ of Lumbricus is a nephromixium is not founded on sound evidence, and is opposed to the simple straightforward interpretation of its morphology which follows most naturally from the facts and a comparison with lower forms.

The Segregation and Elimination of Radioand Fluorescent-Belled Marine Bacteria from the Haemolymph of the Shore Crab, Carcinus Maenas

1982 ◽  
Vol 62 (4) ◽  
pp. 819-833 ◽  
Author(s):  
K. N. White ◽  
N. A. Ratcliffe
Keyword(s):  
Marine Bacterium ◽  
Intact Cell ◽  
Carcinus Maenas ◽  
Shore Crab ◽  
Major Site ◽  
Body Tissues ◽  
Excretory Organ ◽  
Bacterial Accumulation ◽  
Host Blood ◽  
Micro Organisms

The dynamics of clearance, segregation and elimination of a marine bacterium, Moraxella sp., by the shore crab, Carcinus maenas (L.) has been studied utilizing fluorescent and radiolabelling techniques. In addition to the gills, the hepatopancreas was a major site of bacterial accumulation with sequestration occurring within haemocyte clumps and groups of stationary cells in this organ. The heart, excretory organ and subcuticular tissues also incorporated bacteria, but to a lesser extent. By the first day post-injection, many of the segregated micro-organisms had been removed from the organs. This latter process was not due to the exodus of laden haemocytes or of intact cell clumps from the host but seemed to result from lytic action by the host blood cells. Little material arising from such bacterial/haemocytic interaction was, however, immediately excreted, and much was relocated in the general body tissues as well as the gill nephrocytes.

The cyphonautes larva of the marine bryozoan Membranipora membranacea. II. Internal sac, musculature, and pyriform organ

1988 ◽  
Vol 66 (2) ◽  
pp. 384-398 ◽  
Author(s):  
Stephen A. Stricker ◽  
Christopher G. Reed ◽  
Russel L. Zimmer
Keyword(s):  
Secretory Granules ◽  
Light And Electron Microscopy ◽  
Neck Region ◽  
Adductor Muscle ◽  
Ciliated Cells ◽  
Membranipora Membranacea ◽  
Dense Bodies ◽  
Excretory Organ ◽  
Glandular Cells ◽  
Cytological Features

The internal sac, muscles, and pyriform organ of the cyphonautes larva of Membranipora membranacea (phylum Bryozoa, order Cheilostomata) were examined by light and electron microscopy. The internal sac is an ovoid, tripartite organ that lies near the larval gut. The posterior and lateral parts of the sac are composed of nonglandular epithelial cells and are referred to as the roof and wall regions, respectively. The neck region occurring at the anterior end of the sac is packed with large secretory granules and is folded posteriorly into the lumen surrounded by the roof and wall regions. A previously undescribed network of ciliated cells, which may constitute part of an excretory organ, occurs between the internal sac and the gut. Four major sets of muscles are present in the larva: (i) a single adductor muscle that attaches to the two valves of the larval shell and contains non-striated myofibers with conspicuous dense bodies, (ii) a pair of nonstriated sac muscles that extend between the shell and the roof region of the internal sac, (iii) two sets of striated lateral muscles which originate near the center of the shell and ramify along the sides of the larva, and (iv) a median band of striated myofibers located along both the anterior and posterior margins of the larva. The pyriform organ is a large neuroglandular complex located at the anterior end of the larva. The organ consists of (i) a median ciliated groove with an anteriorly positioned tuft of long cilia, (ii) numerous glandular cells surrounding the ciliated groove, and (iii) several discrete tracts of nerves with accompanying muscles. The cytological features of the internal sac, larval muscles, and pyriform organ are compared with those described for other bryozoan larvae.

scholarly journals Enigmatic dual symbiosis in the excretory organ of Nautilus macromphalus (Cephalopoda: Nautiloidea)

2007 ◽  
Vol 274 (1614) ◽  
pp. 1143-1152 ◽  
Author(s):  
Mathieu Pernice ◽  
Silke Wetzel ◽  
Olivier Gros ◽  
Renata Boucher-Rodoni ◽  
Nicole Dubilier
Keyword(s):  
Sequence Similarity ◽  
Ammonia Oxidizing Bacteria ◽  
Living Fossil ◽  
Symbiotic Associations ◽  
Transmission Electron ◽  
Physiological Adaptations ◽  
Excretory Organ ◽  
Pericardial Villi ◽  
Insight Into

Symbiosis is an important driving force in metazoan evolution and the study of ancient lineages can provide an insight into the influence of symbiotic associations on morphological and physiological adaptations. In the ‘living fossil’ Nautilus , bacterial associations are found in the highly specialized pericardial appendage. This organ is responsible for most of the excretory processes (ultrafiltration, reabsorption and secretion) and secretes an acidic ammonia-rich excretory fluid. In this study, we show that Nautilus macromphalus pericardial appendages harbour a high density of a β-proteobacterium and a coccoid spirochaete using transmission electron microscopy, comparative 16S rRNA sequence analysis and fluorescence in situ hybridization (FISH). These two bacterial phylotypes are phylogenetically distant from any known bacteria, with ammonia-oxidizing bacteria as the closest relatives of the β-proteobacterium (above or equal to 87.5% sequence similarity) and marine Spirochaeta species as the closest relatives of the spirochaete (above or equal to 89.8% sequence similarity), and appear to be specific to Nautilus . FISH analyses showed that the symbionts occur in the baso-medial region of the pericardial villi where ultrafiltration and reabsorption processes take place, suggesting a symbiotic contribution to the excretory metabolism.

The Segregation and Elimination of Radioand Fluorescent-Belled Marine Bacteria from the Haemolymph of the Shore Crab, Carcinus Maenas

1982 ◽  
Vol 62 (4) ◽  
pp. 819-833
Author(s):  
K. N. White ◽  
N. A. Ratcliffe
Keyword(s):  
Marine Bacterium ◽  
Intact Cell ◽  
Carcinus Maenas ◽  
Shore Crab ◽  
Major Site ◽  
Body Tissues ◽  
Excretory Organ ◽  
Bacterial Accumulation ◽  
Host Blood ◽  
Micro Organisms

The dynamics of clearance, segregation and elimination of a marine bacterium, Moraxella sp., by the shore crab, Carcinus maenas (L.) has been studied utilizing fluorescent and radiolabelling techniques. In addition to the gills, the hepatopancreas was a major site of bacterial accumulation with sequestration occurring within haemocyte clumps and groups of stationary cells in this organ. The heart, excretory organ and subcuticular tissues also incorporated bacteria, but to a lesser extent. By the first day post-injection, many of the segregated micro-organisms had been removed from the organs. This latter process was not due to the exodus of laden haemocytes or of intact cell clumps from the host but seemed to result from lytic action by the host blood cells. Little material arising from such bacterial/haemocytic interaction was, however, immediately excreted, and much was relocated in the general body tissues as well as the gill nephrocytes.

Sign in / Sign up

Export Citation Format

Share Document