R 340 Cond Meter set for low conductivity measurement. Professional portable conductivity meter with automatic calibration, Auto_Read drift control function, full GLP functions _ realtime clock, dat
- Known as:
- R 340 Cond Meter set low conductivity measurement. Professional portable conductivity meter automatic calibration, Auto_Read drift reference function, GLP functions _ realtime clock, dat
- Catalog number:
- 340CSETLOW
- Product Quantity:
- Kit
- Category:
- -
- Supplier:
- Reagecon
- Gene target:
- 340 Cond Meter set for low conductivity measurement. Professional portable meter with automatic calibration Auto_Read drift control function full GLP functions _ realtime clock dat
Ask about this productRelated genes to: R 340 Cond Meter set for low conductivity measurement. Professional portable conductivity meter with automatic calibration, Auto_Read drift control function, full GLP functions _ realtime clock, dat
- Gene:
- CLOCK NIH gene
- Name:
- clock circadian regulator
- Previous symbol:
- -
- Synonyms:
- KIAA0334, KAT13D, bHLHe8
- Chromosome:
- 4q12
- Locus Type:
- gene with protein product
- Date approved:
- 1999-04-19
- Date modifiied:
- 2015-09-11
Related products to: R 340 Cond Meter set for low conductivity measurement. Professional portable conductivity meter with automatic calibration, Auto_Read drift control function, full GLP functions _ realtime clock, dat
Related articles to: R 340 Cond Meter set for low conductivity measurement. Professional portable conductivity meter with automatic calibration, Auto_Read drift control function, full GLP functions _ realtime clock, dat
- The cumulative number of stem cell divisions in a tissue, known as mitotic age, is thought to be a major determinant of cancer-risk. Somatic mutational and DNA methylation (DNAm) clocks are promising tools to molecularly track mitotic age, yet their relationship is underexplored and their potential for cancer risk prediction in normal tissues remains to be demonstrated. Here we build and validate an improved pan-tissue DNAm counter of total mitotic age called stemTOC. We demonstrate that stemTOC's mitotic age proxy increases with the tumor cell-of-origin fraction in each of 15 cancer-types, in precancerous lesions, and in normal tissues exposed to major cancer risk factors. Extensive benchmarking against 6 other mitotic counters shows that stemTOC compares favorably, specially in the preinvasive and normal-tissue contexts. By cross-correlating stemTOC to two clock-like somatic mutational signatures, we confirm the mitotic-like nature of only one of these. Our data points towards DNAm as a promising molecular substrate for detecting mitotic-age increases in normal tissues and precancerous lesions, and hence for developing cancer-risk prediction strategies. - Source: PubMed
Publication date: 2024/05/17
Zhu TianyuTong HuigeDu ZhaozhenBeck StephanTeschendorff Andrew E - The 8.4 eV nuclear isomer state in Th-229 is resonantly excited in Th-doped CaF_{2} crystals using a tabletop tunable laser system. A resonance fluorescence signal is observed in two crystals with different Th-229 dopant concentrations, while it is absent in a control experiment using Th-232. The nuclear resonance for the Th^{4+} ions in Th:CaF_{2} is measured at the wavelength 148.3821(5) nm, frequency 2020.409(7) THz, and the fluorescence lifetime in the crystal is 630(15) s, corresponding to an isomer half-life of 1740(50) s for a nucleus isolated in vacuum. These results pave the way toward Th-229 nuclear laser spectroscopy and realizing optical nuclear clocks. - Source: PubMed
Tiedau JOkhapkin M VZhang KThielking JZitzer GPeik ESchaden FPronebner TMorawetz IDe Col L ToscaniSchneider FLeitner APressler MKazakov G ABeeks KSikorsky TSchumm T - The origin of biological rhythms goes back to the very beginning of life. They are observed in the animal and plant world at all levels of organization, from cells to ecosystems. As early as the 18th century, plant scientists were the first to explain the relationship between flowering cycles and environmental cycles, emphasizing the importance of daily light-dark cycles and the seasons. Our temporal structure is controlled by external and internal rhythmic signals. Light is the main synchronizer of the circadian system, as daily exposure to light entrains our clock over 24 hours, the endogenous period of the circadian system being close to, but not exactly, 24 hours. In 1960, a seminal scientific meeting, the Cold Spring Harbor Symposium on Biological Rhythms, brought together all the biological rhythms scientists of the time, a number of whom are considered the founders of modern chronobiology. All aspects of biological rhythms were addressed, from the properties of circadian rhythms to their practical and ecological aspects. Birth of chronobiology dates from this period, with the definition of its vocabulary and specificities in metabolism, photoperiodism, animal physiology, etc. At around the same time, and right up to the present day, research has focused on melatonin, the circadian neurohormone of the pineal gland, with data on its pattern, metabolism, control by light and clinical applications. However, light has a double face, as it has positive effects as a circadian clock entraining agent, but also deleterious effects, as it can lead to chronodisruption when exposed chronically at night, which can increase the risk of cancer and other diseases. Finally, research over the past few decades has unraveled the anatomical location of circadian clocks and their cellular and molecular mechanisms. This recent research has in turn allowed us to explain how circadian rhythms control physiology and health. - Source: PubMed
Publication date: 2024/05/17
Touitou YvanCermakian NicolasTouitou Catherine - The accuracy of surface ECG algorithms for predicting the origin of outflow tract ventricular arrhythmias (OT-VAs) might be questioned. Intracardiac electrograms recorded at anatomic landmarks could provide new predictive insights. We aim to evaluate the efficacy of a novel criterion utilizing the activation pattern of the coronary sinus (CS) in localizing OT-VAs, including VAs originating from the right ventricular outflow tract (RVOT), endocardial left ventricular outflow tract (Endo-LVOT), and epicardial left ventricular outflow tract (Epi-LVOT). - Source: PubMed
Publication date: 2024/05/16
Mi Li-JieWeng Si-XianSun QiZhang Hong-DaDing LeiZhang Ai-KaiTang Min - One of the most common and significant symptoms for skin disorders is pruritus. Additionally, it serves as a significant catalyst for the exacerbation or reoccurrence of skin diseases. Pruritus seriously affects patients' physical and mental health, and even the quality of life. It brings a heavy burden to the patients, the families, even the whole society. The pathogenesis and regulation mechanisms for pruritus are complicated and have not yet been elucidated. Previous clinical studies have shown that itch worsens at night in scabies, chronic pruritus, atopic dermatitis, and psoriasis, suggesting that skin pruritus may change with circadian rhythm. Cortisol, melatonin, core temperature, cytokines, and prostaglandins are the main regulatory factors of the circadian rhythm of pruritus. Recent studies have shown that some CLOCK genes, such as , , , and , play an important role in the regulation of the circadian rhythm of pruritus by regulating the Janus tyrosine kinase (JAK)-signal transducer and activator of transcription (STAT) and nuclear factor kappa-B (NF-κB) signaling pathways. However, the mechanisms for circadian clock genes in regulation of circadian rhythm of pruritus have not been fully elucidated. Further studies on the mechanism of circadian clock genes in the regulation of circadian rhythm of pruritus will lay a foundation for elucidating the regulatory mechanisms for pruritus, and also provide new ideas for the control of pruritus and the alleviation of skin diseases. - Source: PubMed
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