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Two tris urea mercaptoethanol extractable polypeptides found uniquely in scales of patients with psoriasis.

This study was designed to chemically characterize the principal structural proteins of psoriatic scales. Cornified cells were obtained from 40 patients with psoriasis, 21 patients with other scaly diseases, and 13 normal individuals. Cells were washed with Tris-HCl buffer and incubated in 8 M urea containing 2-mercaptoethanol (pH 9.0) at 30 degrees C for 7 hr. Extracted proteins were subjected to SDS polyacrylamide gel electrophoresis and protein patterns from normal and diseased scales were compared. The 67,000 dalton constituent of normal cornified cells could not be identified in protein f…

[The occurrence of 2-mercaptoethanol resistant and sensitive listeria agglutinins in human and animal serums].

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Impact of epidermal growth factor and/or β-mercaptoethanol supplementations on the in vitro produced buffaloes' embryos.

The present study investigated the effects of epidermal growth factors (EGF) and/or β-Mercaptoethanol (βME) supplementations to oocyte maturation, fertilization, and culture media on the buffalo in vitro embryo production. The ovaries were collected and transferred within 2 h to the laboratory. The cumulus oocytes complexes were aspirated from 3 to 8 mm diameter follicles. Firstly, EGF; 0, 10, 20, or 50 ng/mL or βME; 0, 25, 50, 100, or 200 μM were supplemented to the in vitro maturation (TCM-199), fertilization (IVF-TALP), or culture (IVC: SOF) media. Our results revealed that supplementing EG…

Modulation of SCE induction and cell proliferation by 2-mercaptoethanol in phytohemagglutinin-stimulated rat lymphocytes.

2-Mercaptoethanol (2-ME) is used as a medium supplement to enhance the proliferation of lymphocytes cultured in vitro. In this study, we have examined the effects of 2-ME on cell growth and on SCE induction in cultures of unstimulated and phytohemagglutinin (PHA)-stimulated Fischer 344 rat lymphocytes. There were virtually no metaphases detected in cells cultured without PHA. In PHA-stimulated cultures, 2-ME decreased SCE frequency but it enhanced SCE frequency in the presence of 5 to 12.5 microM bromodeoxyuridine (BRdU). Both mitotic and replication indices were increased in the PHA/2-ME syst…

Changes in intracellular glutathione levels in stimulated and unstimulated lymphocytes in the presence of 2-mercaptoethanol or cysteine.

Certain low m.w. thiol compounds can enhance various in vitro lymphocyte mitogenic responses, whereas reagents that react with sulfhydryl gr … roliferate under various conditions. In the presence of an appropriate concentration of the thiol 2-mercaptoethanol (2-ME), there is a substantial rise in the level of intracellular glutathione for lymphocytes stimulated with the mitogen concanavalin A (Con A). Otherwise, the level of intracellular glutathione declines, even for Con A-stimulated cells, but the pr …

Оценка взаимодействия между седловатыми стержневыми клетками Уортона и β-Меркаптоэтанолом.

ЦЕЛЬ: Железные мезенхимальные стволовые клетки Уортона (WJ-MSC) являются саморегенеративными и способными дифференцировать в многопоточные стволовые клетки. Могут существовать различные источники мезенхимальных стволовых клеток (МСЦ), задействованных в механизме ремонта поврежденных тканей в организме. WJ-MSC могут проводить различие между остеоцитами, хондроцитами, адипоцитами и миокитными клетками. Кроме того, MSC показывает нейрозащитное воздействие на нейроны. В настоящее время многие методы нейрорегенеративного лечения МСЦ доказали свою эффективность. Исследования показали, что МСЦ в боль

Совпадение в аннотации оригинала
PURPOSE: Wharton's jelly-derived mesenchymal stem cells (WJ-MSCs) are self-regenerative and able to differentiate into multipotent stem cell … ain aim of this study was to investigate the neuronal markers of stem cells after incubation with β-mercaptoethanol (BME). MATERIALS AND METHODS: In our study, WJ-MSCs were thawed in a water bath at 37°C and cultivated in cell culture dishes. When the cell occupancy rate reached 60-70%, they were treated with 2 mM BME. At the first and third hours, MSCs were rem …

Mercaptoethanol capped CdSe quantum dots and CdSe/ZnS core/shell: synthesis, characterization and cytotoxicity evaluation.

CdSe Quantum dots (Q-dots) and CdSe/ZnS core/shell have been synthesized by wet chemical route using mercaptoethanol (ME) as cappant. The synthesized Q-dots and core/shell were characterized using X-ray diffraction (XRD), Transmission electron microscopy (TEM), Energy dispersive X-ray analysis (EDS), Dynamic Light Scattering (DLS), Optical absorption and luminescence spectroscopy. The core/shell formation was confirmed by both XRD and TEM analysis. The luminescence was shown to be considerably enhanced in the core/shell sample. Effect of dialysis process on the optical properties of the Q-dots…

Crystal structure of human CRM1, covalently modified by 2-mercaptoethanol on Cys528, in complex with RanGTP.

CRM1 is a nuclear export receptor that has been intensively targeted over the last decade for the development of antitumor and antiviral drugs. Structural analysis of several inhibitor compounds bound to CRM1 revealed that their mechanism of action relies on the covalent modification of a critical cysteine residue (Cys528 in the human receptor) located in the nuclear export signal-binding cleft. This study presents the crystal structure of human CRM1, covalently modified by 2-mercaptoethanol on Cys528, in complex with RanGTP at 2.58 Å resolution. The results demonstrate that buffer components …

T cells and the anti-trinitrophenyl antibody response to fetal calf serum and 2-mercaptoethanol.

Unprimed murine lymphocytes maintained in culture medium containing fetal calf serum (FCS) and 2-mercaptoethanol (2-ME) developed very high levels of anti-trinitrophenyl (TNP) plaque forming cells (PFC). Both FCS and 2-ME contributed to the response. The development of anti-TNP PFC during culture was accompanied by a 10-fold expansion in the number of immunoglobulin-secreting cells, indicating polyclonal stimulation. However, the number of anti-TNP PFC was disproportionately high and not accompanied by a similar increase in plaques specific for sheep red blood cells. The TNP-specific plaques w…

[Early diagnosis of tick-borne encephalitis in the hemagglutination-inhibition-test by treatment of serum with 2 mercaptoethanol].

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2-Mercaptoethanol enhances the yield of exosomes showing therapeutic potency in alleviating spinal cord injury mice.

BACKGROUND: Limited passage numbers of mesenchymal stem cells (MSCs) present challenges in producing sufficient exosomes for spinal cord injury (SCI) treatment. OBJECTIVES: This study investigates whether β-mercaptoethanol (BME) preconditioning of MSCs can increase exosome yield for SCI therapy. METHODS: Exosomal content was analyzed using silver staining and SYBR Gold staining. Cell viability was assessed via CCK-8 and EdU assays. IL-1β, IL-6, TNF-α, and MCP-1 levels were measured by enzyme-linked immunosorbent assay (ELISA). Neuronal differentiation influenced by astrocytes was evaluated t…

Follow-up standard agglutination and 2-mercaptoethanol tests in 175 clinically cured cases of human brucellosis.

BACKGROUND: The standard agglutination (SAT) and 2-mercaptoethanol (2-ME) tests are usually used in the follow-up of treated cases of human brucellosis. The purpose of this study was to monitor the levels of these tests, two years after clinical cure in cases of brucellosis. METHODS: From April 2003 to September 2008, 175 clinically cured cases of brucellosis (103 males, 72 females) were evaluated. Diagnosis of brucellosis was established with a SAT of > or =1:320 and a 2-ME of > or =1:80, with clinical symptoms and signs compatible with brucellosis. SAT and 2-ME were retested at the end of t…

Effect of 2-mercaptoethanol on glutathione levels, cystine uptake and insulin secretion in insulin-secreting cells.

The role of glutathione (GSH) in the differentiated state of insulin-secreting cells was studied using 2-mercaptoethanol as a means of varying intracellular GSH levels. 2-Mercaptoethanol (50 microM) caused a marked increase of GSH in two rat insulinoma cell lines, RINm5F and INS-1, the latter being dependent on the presence of 2-mercaptoethanol for survival in tissue culture. The effect of 2-mercaptoethanol on GSH was shared by other thiol compounds. Since in other cell types 2-mercaptoethanol is thought to act on cystine transport, thereby increasing the supply of cysteine for GSH synthesis, …

Induction of lymphokine-activated killer activity in rat splenocyte cultures: the importance of 2-mercaptoethanol and indomethacin.

The role of 2-mercaptoethanol and indomethacin in the induction of lymphokine-activated killer (LAK) activity by interleukin-2 (IL-2) in rat splenocyte cultures was investigated. Spleens from 4-month-old male rats of five different strains were tested. Splenocytes were cultured for 3-5 days in the presence of IL-2 (1000 U/ml) and LAK activity was assessed by 4-h 51Cr release assays with P815 and YAC-1 cells as targets. LAK activity could be induced by IL-2 in splenocytes from all rat strains, but only when 2-mercaptoethanol was present in the culture medium. Optimal LAK activity was induced wh…

A simplified method for the detection of rubella-specific IgM employing sucrose density fractionation and 2-mercaptoethanol.

A simplified method for the detection of rubella-specific IgM in sera was developed involving HAI tests on only one fraction from a sucrose density gradient with and without treatment with 2-mercaptoethanol (2 ME). Slight trailing of IgG into the IgM fraction was shown to occur in patients with high titres of both IgG and IgM, but this could be detected by the 2ME treatment and did not affect the results.By this test, rubella-specific IgM was found in all of 54 patients with a rash and a rise of rubella HAI antibodies. When the antigen and serum were incubated for 1 hr. before adding the RBC, …

Effect of 2-mercaptoethanol treatment on anticardiolipin reactivity in sera from syphilitics and false positive reactors.

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[Studies on the sensitivity of swine anti-serum against Japanese encephalitis virus to 2-mercaptoethanol. (1)].

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Comparative study of intracellular glutathione content in rat lymphocyte cultures treated with 2-mercaptoethanol and interleukin-2.

The level of intracellular glutathione (GSH) in mitogen-stimulated mouse lymphocytes is increased in the presence of 2-mercaptoethanol (2-ME), an enhancer of lymphocyte activation and proliferation. Since proliferation of lymphocytes in response to mitogens involves direct activation by a mitogen followed by continued proliferation in response to interleukin-2 (IL-2), we have investigated the effect of 2-ME and exogenous IL-2 on the GSH content and cell proliferation of rat lymphocytes stimulated with phytohemagglutinin (PHA). PHA stimulation increased both GSH content and the magnitude of the…

Reactions of sulfenic acid with 2-mercaptoethanol: a mechanism for the inhibition of gastric (H+-K+)-adenosine triphosphate by omeprazole.

The reactions of omeprazole, a potent proton pump inhibitor (PPI) were investigated in the presence of 2-mercapotoethanol. Reactions were monitored in solutions buffered to pH values ranging 2.0-8.0 using differential pulse polarography (DPP) at the static mercury drop electrode (SMDE). The fast, sensitive and selective electrochemical technique facilitated successive recordings of voltammograms (peak current (nA) vs. peak potential (volts vs. Ag/AgCl)) for all analytes in situe, including the 2-mercaptoethanol. In acidic solutions and in the presence of 2-mercaptoethanol, omeprazole undergoes…

Promoting effect of beta-mercaptoethanol on in vitro development under oxidative stress and cystine uptake of bovine embryos.

The effects of beta-mercaptoethanol (beta-ME) on in vitro development under oxidative stress and cystine uptake of bovine embryos were investigated. Bovine 1-cell embryos obtained by in vitro fertilization were cultured in TCM-199 or synthetic oviductal fluid (SOF) in 20% O(2) supplemented with beta-ME. Addition of beta-ME significantly (P < 0.01) promoted embryo development when cultured in both TCM-199 and SOF under high levels of O(2), to almost the same rates when they were cultured in 5% O(2). To investigate whether the growth-promoting effect of beta-ME was related to cystine uptake, whi…