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List of works by Yuen K Ip

A comparison of the effects of environmental ammonia exposure on the Asian freshwater stingray Himantura signifer and the Amazonian freshwater stingray Potamotrygon motoro.

scientific article published in October 2003

Active ammonia excretion in the giant mudskipper, Periophthalmodon schlosseri (Pallas), during emersion

scientific article published on 01 June 2007

Active ammonia transport and excretory nitrogen metabolism in the climbing perch, Anabas testudineus, during 4 days of emersion or 10 minutes of forced exercise on land

scientific article published in November 2006

Activities of enzymes associated with phosphoenolpyruvate metabolism in the mudskippers, Boleophthalmus boddaerti and Periophthalmodon schlosseri

scientific article published on 01 January 1987

Acute ammonia toxicity and the protective effects of methionine sulfoximine on the swamp eel, Monopterus albus.

scientific article published in November 2009

Aestivation Induces Changes in the mRNA Expression Levels and Protein Abundance of Two Isoforms of Urea Transporters in the Gills of the African Lungfish, Protopterus annectens.

scientific article published on 16 February 2017

Aestivation and hypoxia-related events share common silent neuron trafficking processes.

scientific article

Aestivation induces changes in transcription and translation of coagulation factor II and fibrinogen gamma chain in the liver of the African lungfish Protopterus annectens

scientific article published on 8 October 2015

African sharptooth catfish Clarias gariepinus does not detoxify ammonia to urea or amino acids but actively excretes ammonia during exposure to environmental ammonia

scientific article published on March 2004

Alkaline environmental pH has no effect on ammonia excretion in the mudskipper Periophthalmodon schlosseri but inhibits ammonia excretion in the related species Boleophthalmus boddaerti

scientific article

Ammonia exposure affects the mRNA and protein expression levels of certain Rhesus glycoproteins in the gills of climbing perch.

scientific article published on 2 June 2017

Ammonia exposure increases the expression of Na(+):K (+):2Cl (-) cotransporter 1a in the gills of the giant mudskipper, Periophthalmodon schlosseri

scientific article published on 28 October 2014

Ammonia production, excretion, toxicity, and defense in fish: a review ⬇️

scientific article published on October 4, 2010

Ammoniagenesis in mudskippers Boleophthalmus boddaerti and Periophthalmodon schlosseri

scientific article

An investigation of the role of carbonic anhydrase in aquatic and aerial gas transfer in the African lungfish Protopterus dolloi

scientific article published on October 2005

Ascorbate synthesis in fishes: A review

scientific article

Ascorbic Acid Biosynthesis and Brackish Water Acclimation in the Euryhaline Freshwater White-Rimmed Stingray, Himantura signifer

scientific article published in 2013

Both seawater acclimation and environmental ammonia exposure lead to increases in mRNA expression and protein abundance of Na⁺:K⁺:2Cl⁻ cotransporter in the gills of the climbing perch, Anabas testudineus

scientific article published on 18 December 2011

Branchial Na(+):K(+):2Cl(-) cotransporter 1 and Na(+)/K(+)-ATPase α-subunit in a brackish water-type ionocyte of the euryhaline freshwater white-rimmed stingray, Himantura signifer

scientific article published on 10 December 2013

Branchial ammonia excretion in the Asian weatherloach Misgurnus anguillicaudatus

scientific article

Calcium absorption in the fluted giant clam, Tridacna squamosa, may involve a homolog of voltage-gated calcium channel subunit α1 (CACNA1) that has an apical localization and displays light-enhanced protein expression in the ctenidium

scientific article published on 04 October 2019

Can the mudskipper, Periophthalmus chrysospilos, tolerate acute environmental hypoxic exposure?

scientific article published on 01 May 1990

Carbohydrate and amino acid metabolism in fasting and aestivating African lungfish (Protopterus dolloi).

scientific article published on 14 June 2008

Carbonic anhydrase 2-like in the giant clam, Tridacna squamosa: characterization, localization, response to light, and possible role in the transport of inorganic carbon from the host to its symbionts.

scientific article published in December 2017

Changes in salinity and ionic compositions can act as environmental signals to induce a reduction in ammonia production in the African lungfish Protopterus dolloi.

scientific article published on June 2005

Changes in tissue free amino acid contents, branchial Na+/K+ -ATPase activity and bimodal breathing pattern in the freshwater climbing perch, Anabas testudineus (Bloch), during seawater acclimation

scientific article published in December 2007

Characterization of cDNAs encoding cholesterol side chain cleavage and 3beta-hydroxysteroid dehydrogenase in the freshwater stingray Potamotrygon motoro.

scientific article published on 5 August 2006

Chronic and acute ammonia toxicity in mudskippers, Periophthalmodon schlosseri and Boleophthalmus boddaerti: brain ammonia and glutamine contents, and effects of methionine sulfoximine and MK801.

scientific article published in May 2005

Circulating catecholamines and cardiorespiratory responses in hypoxic lungfish (Protopterus dolloi): a comparison of aquatic and aerial hypoxia

scientific article published on 28 April 2005

Control of breathing in African lungfish (Protopterus dolloi): a comparison of aquatic and cocooned (terrestrialized) animals

scientific article published on 04 July 2007

Cystic fibrosis transmembrane conductance regulator in the gills of the climbing perch, Anabas testudineus, is involved in both hypoosmotic regulation during seawater acclimation and active ammonia excretion during ammonia exposure.

scientific article published on 22 April 2012

Cytochrome c oxidase is regulated by modulations in protein expression and mitochondrial membrane phospholipid composition in estivating African lungfish

scientific article published on 30 December 2009

Defense against environmental ammonia toxicity in the African lungfish, Protopterus aethiopicus: Bimodal breathing, skin ammonia permeability and urea synthesis

scientific article published on 12 August 2007

Differential NOS expression in freshwater and aestivating Protopterus dolloi (lungfish): heart vs kidney readjustments

scientific article published on 30 October 2007

Differential gene expression in the brain of the African lungfish, Protopterus annectens, after six days or six months of aestivation in air

scientific article (publication date: 2013)

Differential gene expression in the liver of the African lungfish, Protopterus annectens, after 6 days of estivation in air.

scientific article

Differential gene expression in the liver of the African lungfish, Protopterus annectens, after 6 months of aestivation in air or 1 day of arousal from 6 months of aestivation

scientific article

Differential transcriptomic analyses revealed genes and signaling pathways involved in iono-osmoregulation and cellular remodeling in the gills of euryhaline Mozambique tilapia, Oreochromis mossambicus

scientific article

Effects of glucose transport on the incorporation of 32P-inorganic phosphate into phospholipids in Hymenolepis diminuta (Cestoda)

scientific article published on 01 January 1987

Effects of hypoxia on the energy status and nitrogen metabolism of African lungfish during aestivation in a mucus cocoon

scientific article published on 27 May 2008

Effects of intra-peritoneal injection with NH4Cl, urea, or NH4Cl+urea on nitrogen excretion and metabolism in the African lungfish Protopterus dolloi

scientific article

Effects of peritoneal injection of NH4HCO3 on nitrogen excretion and metabolism in the swamp eel Monopterus albus-- increased ammonia excretion with an induction of glutamine synthetase activity.

scientific article published in April 2004

Endothelial-like nitric oxide synthase immunolocalization by using gold nanoparticles and dyes.

scientific article published on 9 November 2015

Environmental ammonia exposure induces oxidative stress in gills and brain of Boleophthalmus boddarti (mudskipper).

scientific article published on 16 September 2009

Environmental effect on plasma thyroxine (T4), 3,5,3'-triido-L-thyronine (T3), prolactin and cyclic adenosine 3',5'-monophosphate (cAMP) content in the mudskippers Periophthalmus chrysospilos and Boleophthalmus boddaerti

scientific article published on 01 January 1987

Excretory nitrogen metabolism and defence against ammonia toxicity in air-breathing fishes

scientific article published on 20 January 2014

Excretory nitrogen metabolism in the Chinese fire-belly newt Cynops orientalis in water, on land, or in high concentrations of environmental ammonia

scientific article published on 11 November 2003

Excretory nitrogen metabolism in the juvenile axolotl Ambystoma mexicanum: differences in aquatic and terrestrial environments

scientific article published in September 2002

Exposure to air, but not seawater, increases the glutamine content and the glutamine synthetase activity in the marsh clam Polymesoda expansa.

scientific article published in December 2004

Exposure to brackish water, upon feeding, leads to enhanced conservation of nitrogen and increased urea synthesis and retention in the Asian freshwater stingray Himantura signifer

scientific article published in February 2006

Expression of key ion transporters in the gill and esophageal-gastrointestinal tract of euryhaline Mozambique tilapia Oreochromis mossambicus acclimated to fresh water, seawater and hypersaline water

scientific article published on 31 January 2014

Five tropical air-breathing fishes, six different strategies to defend against ammonia toxicity on land.

scientific article

Functional roles of Na(+)/K(+)-ATPase in active ammonia excretion and seawater acclimation in the giant mudskipper, Periophthalmodon schlosseri

scientific article published on 23 April 2014

Glutamine accumulation and up-regulation of glutamine synthetase activity in the swamp eel, Monopterus albus (Zuiew), exposed to brackish water

scientific article published in May 2009

Greatly elevated urea excretion after air exposure appears to be carrier mediated in the slender lungfish (Protopterus dolloi).

scientific article

Heart inflow tract of the African lungfish Protopterus dolloi

scientific article published on 01 January 2005

Hepatic carbamoyl phosphate synthetase (CPS) I and urea contents in the hylid tree frog, Litoria caerulea: transition from CPS III to CPS I.

scientific article published on 27 June 2012

High brain ammonia tolerance and down-regulation of Na+:K+:2Cl(-) Cotransporter 1b mRNA and protein expression in the brain of the Swamp Eel, Monopterus albus, exposed to environmental ammonia or terrestrial conditions

scientific article

Increased apical sodium-dependent glucose transporter abundance in the ctenidium of the giant clam Tridacna squamosa upon illumination

scientific article published on 09 April 2019

Increased gene expression of a facilitated diffusion urea transporter in the skin of the African lungfish (Protopterus annectens) during massively elevated post-terrestrialization urea excretion

scientific article published on April 2009

Increased urea synthesis and/or suppressed ammonia production in the African lungfish, Protopterus annectens, during aestivation in air or mud.

scientific article

Increases in apoptosis, caspase activity and expression of p53 and bax, and the transition between two types of mitochondrion-rich cells, in the gills of the climbing perch, Anabas testudineus, during a progressive acclimation from freshwater to sea

scientific article published on 7 June 2013

Increases in urea synthesis and the ornithine-urea cycle capacity in the giant African snail, Achatina fulica, during fasting or aestivation, or after the injection with ammonium chloride

scientific article published in December 2005

Intestinal osmoregulatory acclimation and nitrogen metabolism in juveniles of the freshwater marble goby exposed to seawater

scientific article published on 19 December 2009

Ionoregulatory physiology of two species of African lungfishesProtopterus dolloiandProtopterus annectens

scientific article published on 01 September 2009

L-gulono-γ-lactone oxidase expression and vitamin C synthesis in the brain and kidney of the African lungfish, Protopterus annectens.

scientific article

Light exposure enhances urea absorption in the fluted giant clam, Tridacna squamosa, and up-regulates the protein abundance of a light-dependent urea active transporter, DUR3-like, in its ctenidium

scientific article published on 19 April 2018

Light induces an increase in the pH of and a decrease in the ammonia concentration in the extrapallial fluid of the giant clam Tridacna squamosa

scientific article published on 12 April 2006

Light induces changes in activities of Na(+)/K(+)-ATPase, H(+)/K(+)-ATPase and glutamine synthetase in tissues involved directly or indirectly in light-enhanced calcification in the giant clam, Tridacna squamosa.

scientific article

Light-dependent expression of a Na+/H+ exchanger 3-like transporter in the ctenidium of the giant clam, Tridacna squamosa, can be related to increased H+ excretion during light-enhanced calcification

scientific article

Lipid, ketone body and oxidative metabolism in the African lungfish, Protopterus dolloi following 60 days of fasting and aestivation

scientific article published on 14 June 2008

Lungfish aestivating activities are locked in distinct encephalic γ-aminobutyric acid type A receptor α subunits

scientific article published on 6 January 2011

Lympho-granulocytic tissue associated with the wall of the spiral valve in the African lungfish Protopterus annectens.

scientific article published on 20 November 2013

Marine (Taeniura lymma) and freshwater (Himantura signifer) elasmobranchs synthesize urea for osmotic water retention

scientific article published on 17 May 2005

Mechanisms of acid-base regulation in the African lungfish Protopterus annectens

scientific article published on 01 June 2007

Mechanisms of and defense against acute ammonia toxicity in the aquatic Chinese soft-shelled turtle, Pelodiscus sinensis

scientific article published on 4 November 2007

Membrane transport of inositol by Hymenolepis diminuta (Cestoda)

scientific article published on 01 February 1982

Metabolic organization of freshwater, euryhaline, and marine elasmobranchs: implications for the evolution of energy metabolism in sharks and rays

scientific article published in July 2006

Microanatomy and ultrastructure of the kidney of the African lungfish Protopterus dolloi

scientific article

Molecular Characterization of Aquaporin 1 and Aquaporin 3 from the Gills of the African Lungfish, Protopterus annectens, and Changes in Their Branchial mRNA Expression Levels and Protein Abundance during Three Phases of Aestivation

scientific article

Molecular characterization and mRNA expression of carbamoyl phosphate synthetase III in the liver of the African lungfish, Protopterus annectens, during aestivation or exposure to ammonia

scientific article published on 30 October 2011

Molecular characterization of a novel algal glutamine synthetase (GS) and an algal glutamate synthase (GOGAT) from the colorful outer mantle of the giant clam, Tridacna squamosa, and the putative GS-GOGAT cycle in its symbiotic zooxanthellae.

scientific article published on 26 February 2018

Molecular characterization of argininosuccinate synthase and argininosuccinate lyase from the liver of the African lungfish Protopterus annectens, and their mRNA expression levels in the liver, kidney, brain and skeletal muscle during aestivation

scientific article published on 18 July 2014

Molecular characterization of betaine-homocysteine methyltransferase 1 from the liver, and effects of aestivation on its expressions and homocysteine concentrations in the liver, kidney and muscle, of the African lungfish, Protopterus annectens

scientific article

Molecular characterization of myostatin from the skeletal muscle of the African lungfish, Protopterus annectens, and changes in its mRNA and protein expression levels during three phases of aestivation.

scientific article published on 9 February 2017

Molecular characterization of three Rhesus glycoproteins from the gills of the African lungfish, Protopterus annectens, and effects of aestivation on their mRNA expression levels and protein abundance.

scientific article published on 26 October 2017

Molecular characterization, light-dependent expression, and cellular localization of a host vacuolar-type H+-ATPase (VHA) subunit A in the giant clam, Tridacna squamosa, indicate the involvement of the host VHA in the uptake of inorganic carbon and

scientific article published on 17 March 2018

NO modulation of myocardial performance in fish hearts.

scientific article

Na+/K+-ATPase α-subunit (nkaα) isoforms and their mRNA expression levels, overall Nkaα protein abundance, and kinetic properties of Nka in the skeletal muscle and three electric organs of the electric eel, Electrophorus electricus.

scientific article

Nitric oxide synthase-dependent "on/off" switch and apoptosis in freshwater and aestivating lungfish, Protopterus annectens: skeletal muscle versus cardiac muscle

scientific article published on 30 March 2013

Nitrogen metabolism and branchial osmoregulatory acclimation in the juvenile marble goby, Oxyeleotris marmorata, exposed to seawater

scientific article

Nitrogen metabolism and excretion during aestivation

scientific article published on January 2010

Nitrogen metabolism and excretion in the aquatic chinese soft-shelled turtle, Pelodiscus sinensis, exposed to a progressive increase in ambient salinity

scientific article published on 01 December 2006

Nitrogen metabolism and excretion in the swamp eel, Monopterus albus, during 6 or 40 days of estivation in mud.

scientific article published in June 2005

Nitrogen metabolism in the African lungfish (Protopterus dolloi) aestivating in a mucus cocoon on land.

scientific article published in February 2004

Ornithine-urea cycle and urea synthesis in African lungfishes, Protopterus aethiopicus and Protopterus annectens, exposed to terrestrial conditions for six days

scientific article published in May 2005

Osmoregulation in the mudskipper,Boleophthalmus boddaerti I. Responses of branchial cation activated and anion stimulated adenosine triphosphatases to changes in salinity

scientific article published on 01 March 1991

Osmoregulation in the mudskipper,Boleophthalmus boddaerti II. transepithelial potential and hormonal control

scientific article published on 01 March 1991

Plasma non-esterified fatty acids of elasmobranchs: comparisons of temperate and tropical species and effects of environmental salinity.

scientific article

Postprandial increases in nitrogenous excretion and urea synthesis in the Chinese soft-shelled turtle, Pelodiscus sinensis

scientific article published on 13 July 2006

Postprandial increases in nitrogenous excretion and urea synthesis in the giant mudskipper Periophthalmodon schlosseri

scientific article

Properties and expression of Na+/K+-ATPase α-subunit isoforms in the brain of the swamp eel, Monopterus albus, which has unusually high brain ammonia tolerance

scientific article

Quantitative determination of inositol in Hymenolepis diminuta (Cestoda)

scientific article published on 01 August 1982

Renal corpuscle of the african lungfish Protopterus dolloi: structural and histochemical modifications during aestivation

scientific article published on 01 September 2008

Roles of intestinal glutamate dehydrogenase and glutamine synthetase in environmental ammonia detoxification in the euryhaline four-eyed sleeper, Bostrychus sinensis.

scientific article published on 4 February 2010

Roles of three branchial Na(+)-K(+)-ATPase α-subunit isoforms in freshwater adaptation, seawater acclimation, and active ammonia excretion in Anabas testudineus

scientific article published on 23 May 2012

Signal molecule changes in the gills and lungs of the African lungfish Protopterus annectens, during the maintenance and arousal phases of aestivation

scientific article published on 9 December 2014

Strategies adopted by the mudskipper Boleophthalmus boddaerti to survive sulfide exposure in normoxia or hypoxia

scientific article published in September 2004

Strategies for surviving high concentrations of environmental ammonia in the swamp eel Monopterus albus

scientific article published on May 2004

Symbiodiniaceae dinoflagellates express urease in three subcellular compartments and upregulate its expression levels in situ in three organs of a giant clam (Tridacna squamosa) during illumination

scientific article published on 28 July 2020

The African Lungfish (Protopterus dolloi): Ionoregulation and Osmoregulation in a Fish out of Water

scientific article published on 15 November 2006

The African lungfish, Protopterus dolloi, detoxifies ammonia to urea during environmental ammonia exposure

scientific article published in January 2005

The African sharptooth catfish Clarias gariepinus can tolerate high levels of ammonia in its tissues and organs during four days of aerial exposure

scientific article published on 17 May 2005

The Chinese soft-shelled turtle, Pelodiscus sinensis, decreases nitrogenous excretion, reduces urea synthesis and suppresses ammonia production during emersion

scientific article published on 24 January 2013

The Chinese soft-shelled turtle, Pelodiscus sinensis, excretes urea mainly through the mouth instead of the kidney.

scientific article

The accumulation of methylamine counteracting solutes in elasmobranchs with differing levels of urea: a comparison of marine and freshwater species

scientific article published in March 2006

The alimentary canal of the African lungfish Protopterus annectens during aestivation and after arousal

scientific article published in October 2011

The ammonotelic African lungfish, Protopterus dolloi, increases the rate of urea synthesis and becomes ureotelic after feeding.

scientific article

The anatomy of the gastrointestinal tract of the African lungfish, Protopterus annectens

scientific article published on 01 July 2010

The crab-eating frog, Rana cancrivora, up-regulates hepatic carbamoyl phosphate synthetase I activity and tissue osmolyte levels in response to increased salinity.

scientific article

The effect of temperature acclimation on myocardial beta-adrenoceptor density and ligand binding affinity in African catfish (Claris gariepinus).

scientific article published on June 2005

The freshwater Amazonian stingray, Potamotrygon motoro, up-regulates glutamine synthetase activity and protein abundance, and accumulates glutamine when exposed to brackish (15 per thousand) water

scientific article published in December 2009

The giant mudskipper Periophthalmodon schlosseri facilitates active NH(4)(+) excretion by increasing acid excretion and decreasing NH(3) permeability in the skin

scientific article published in February 2004

The gut of the juvenile African lungfish Protopterus annectens: a light and scanning electron microscope study.

scientific article

The interplay of increased urea synthesis and reduced ammonia production in the African lungfish Protopterus aethiopicus during 46 days of aestivation in a mucus cocoon

scientific article published in December 2005

The loach Misgurnus anguillicaudatus reduces amino acid catabolism and accumulates alanine and glutamine during aerial exposure

scientific article

The osmotic response of the Asian freshwater stingray (Himantura signifer) to increased salinity: a comparison with marine (Taeniura lymma) and Amazonian freshwater (Potamotrygon motoro) stingrays

scientific article published in September 2003

The snakehead Channa asiatica accumulates alanine during aerial exposure, but is incapable of sustaining locomotory activities on land through partial amino acid catabolism.

scientific article

The spleen of the African lungfish Protopterus annectens: freshwater and aestivation

scientific article published on 3 July 2012

The structural characteristics of the heart ventricle of the African lungfish Protopterus dolloi: freshwater and aestivation

scientific article published in August 2008

The swamp eel Monopterus albus reduces endogenous ammonia production and detoxifies ammonia to glutamine during 144 h of aerial exposure

scientific article published on July 2003

Upregulation of intracellular antioxidant enzymes in brain and heart during estivation in the African lungfish Protopterus dolloi

scientific article

Urea synthesis in the African lungfish Protopterus dolloi--hepatic carbamoyl phosphate synthetase III and glutamine synthetase are upregulated by 6 days of aerial exposure

scientific article published in October 2003

Ventricle and outflow tract of the African lungfish Protopterus dolloi

scientific article published on 01 July 2005

Voltage-Gated Na+ Channel Isoforms and Their mRNA Expression Levels and Protein Abundance in Three Electric Organs and the Skeletal Muscle of the Electric Eel Electrophorus electricus

scientific article

Water balance and renal function in two species of African lungfish Protopterus dolloi and Protopterus annectens

scientific article published on 20 September 2008

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