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Nutrition: Potassium

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Total 74 results found since Jan 2013.

Predisposition of Neonatal Maternal Separation to Visceral Hypersensitivity via Downregulation of Small-Conductance Calcium-Activated Potassium Channel Subtype 2 (SK2) in Mice.
Conclusions: ELS-induced visceral pain and visceral hypersensitivity are associated with the underfunction of SK2 channels in the spinal DH. PMID: 33029124 [PubMed - in process]
Source: Neural Plasticity - October 10, 2020 Category: Neurology Authors: Wu K, Gao JH, Hua R, Peng XH, Wang H, Zhang YM Tags: Neural Plast Source Type: research

The antidiabetic drug glibenclamide exerts direct retinal neuroprotection.
Abstract Sulfonylureas, widely used as hypoglycaemic agents in adults with type 2 diabetes, have neuroprotective effects in preclinical models of central nervous system injury, and in children with neuropsychomotor impairments linked to neonatal diabetes secondary to ATP-sensitive potassium channel mutations. In the human and rodent retina, we show that the glibenclamide activated channel SUR1 is expressed in the retina and enriched in the macula; we also show that it co-localizes with the potassium channel Kir6.2, and with the cation channel transporter TRPM4. Glibenclamide (glyburide), administered at doses that...
Source: Translational Research : the journal of laboratory and clinical medicine - October 17, 2020 Category: Laboratory Medicine Authors: Berdugo M, Delaunay K, Naud MC, Guegan J, Moulin A, Savoldelli M, Picard E, Radet L, Jonet L, Djerada Z, Gozalo C, Daruich A, Beltrand J, Jeanny JC, Kermorvant-Duchemin E, Crisanti P, Polak M, Behar-Cohen F Tags: Transl Res Source Type: research

The role of the voltage-gated potassium channel, Kv2.1 in prostate cancer cell migration.
Abstract Voltage-gated potassium (Kv) channels are involved in many important cellular functions and play pivotal roles in cancer progression. The expression level of Kv2.1 was observed to be higher in the highly metastatic prostate cancer cells (PC-3), specifically in their membrane, than in immortalized prostate cells (WPMY-1 cells) and comparatively less metastatic prostate cancer cells (LNCaP and DU145 cells). However, Kv2.1 expression was significantly decreased when the cells were treated with anti-oxidants, such as N-acetylcysteine or ascorbic acid, implying that the highly expressed Kv2.1 could detect reac...
Source: BMB Reports - January 7, 2021 Category: Biochemistry Authors: Park HW, Song MS, Sim HJ, Ryu PD, Lee SY Tags: BMB Rep Source Type: research

Specific protein kinase C isoform exerts chronic inhibition on the slowly activating delayed-rectifier potassium current by affecting channel trafficking.
This study was designed to identify the specific PKC isoform involved in the long-term regulation of I Ks current. The I Ks current was recorded using whole-cell patch-clamp technique in human embryonic kidney (HEK) 293B cell co-transfected with human KCNQ1/KCNE1 genes. The results revealed that both chronic activation of Ang II and PMA reduced the I Ks current in a long-term regulation (about 24 hours). Further evidence showed that PKCε knockdown by siRNA antagonized the AngII-induced chronic inhibition on the I Ks current, whereas knockdown of cPKC (PKCα and PKCβ) attenuated the inhibition effect of PMA on the curren...
Source: Channels - February 6, 2021 Category: Molecular Biology Tags: Channels (Austin) Source Type: research

The role of the voltage-gated potassium channel, Kv2.1 in prostate cancer cell migration
BMB Rep. 2021 Jan 7:5184. Online ahead of print.ABSTRACTVoltage-gated potassium (Kv) channels are involved in many important cellular functions and play pivotal roles in cancer progression. The expression level of Kv2.1 was observed to be higher in the highly metastatic prostate cancer cells (PC-3), specifically in their membrane, than in immortalized prostate cells (WPMY-1 cells) and comparatively less metastatic prostate cancer cells (LNCaP and DU145 cells). However, Kv2.1 expression was significantly decreased when the cells were treated with anti-oxidants, such as N-acetylcysteine or ascorbic acid, implying that the hi...
Source: BMB Reports - January 7, 2021 Category: Biochemistry Authors: Hyun Woo Park Min Seok Song Hun Ju Sim Pan Dong Ryu So Yeong Lee Source Type: research

KCNK13 potassium channels in the ventral tegmental area of rats are important for excitation of VTA neurons by ethanol
CONCLUSIONS: KCNK13 plays an important role in ethanol stimulation of rat VTA neurons, and KCNK13 is dynamically regulated by cell damage, by ethanol exposure, and during withdrawal. KCNK13 is a novel alcohol-sensitive protein and further investigation of this channel may offer new avenues for the development of agents useful in altering the rewarding effect of alcohol.PMID:33960499 | DOI:10.1111/acer.14630
Source: Alcoholism, Clinical and Experimental Research - May 7, 2021 Category: Addiction Authors: Chang You Bertha J Vandegrift Mark S Brodie Source Type: research

NEK7-Mediated Activation of NLRP3 Inflammasome Is Coordinated by Potassium Efflux/Syk/JNK Signaling During Staphylococcus aureus Infection
This study expands our understanding of the basic molecular mechanism regulating inflammation and provides potential value for anti-infective drug development against S. aureus infection.
Source: Frontiers in Immunology - September 16, 2021 Category: Allergy & Immunology Source Type: research

SUMOylation of Kir7.1 participates in neuropathic pain through regulating its membrane expression in spinal cord neurons
CONCLUSION: SUMOylation of the Kir7.1 in the spinal cord might contribute to the development of SNI-induced mechanical allodynia by decreasing the Kir7.1 surface expression in rats.PMID:35633059 | DOI:10.1111/cns.13871
Source: CNS Neuroscience and Therapeutics - May 28, 2022 Category: Neuroscience Authors: You-You Lv Han Wang Hai-Ting Fan Ting Xu Wen-Jun Xin Rui-Xian Guo Source Type: research

Chronic Administration of COVID-19 Drugs Fluvoxamine and Lopinavir Shortens Action Potential Duration by Inhibiting the Human Ether ‐à‐go‐go–Related Gene and Cav1.2
Conclusion: Chronic incubation with FLV and LPV produced more severe channel-blocking effects and contributed to altered channel gating and shortened action potential duration by inhibiting hERG and Cav1.2.
Source: Frontiers in Pharmacology - July 7, 2022 Category: Drugs & Pharmacology Source Type: research

Silence of URI in gastric cancer cells promotes cisplatin-induced DNA damage and apoptosis
In conclusion, our results suggest that URI is involved in the cisplatin-induced DNA damage response via the ATM/CHK2 pathway, and silencing URI can increase cisplatin-induced DNA damage and enhance drug sensitivity in gastric cancer cells.PMID:37034221 | PMC:PMC10077030
Source: Cell Research - April 10, 2023 Category: Cytology Authors: Huiqin Bian Yu Gu Chen Chen Jinnan Chen Fei Zhang Zhonghai Xu Qian Wang Rui Mi Xuan Wu Yaojuan Lu Qiping Zheng Junxia Gu Source Type: research