听力与言语-语言病理学

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医学伦理学

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  • Cryopreservation of skin using a murine model: validation of a prognostic viability assay.

    abstract::In order to evaluate the many variables that can affect cryopreservation success, a simple, highly reproducible model system is required. We have evaluated the use of tetrazolium reductase activity as a prognostic indicator of skin viability in an inbred murine model. Two inbred hairless mouse strains were characteriz...

    journal_title:Cryobiology

    pub_type: 杂志文章

    doi:10.1016/0011-2240(90)90049-a

    authors: Kearney JN,Wheldon LA,Gowland G

    更新日期:1990-02-01 00:00:00

  • Effect of dimethyl sulfoxide and protein concentration on the viability of two-cell mouse embryos frozen with a rapid freezing technique.

    abstract::Two-cell mouse embryos were frozen by direct plunging into liquid nitrogen after a 3-min exposure to solutions containing 0.25 M sucrose with 1.5, 3, or 4.5 M dimethyl sulfoxide (Me2SO), and 0, 4, 8, 16, or 32 mg/ml bovine serum albumin (BSA). In the absence of BSA, significantly more embryos were lost or damaged duri...

    journal_title:Cryobiology

    pub_type: 杂志文章

    doi:10.1016/0011-2240(89)90066-7

    authors: Shaw JM,Trounson AO

    更新日期:1989-10-01 00:00:00

  • The effect of cryopreservation on ciliary beat frequency of human respiratory epithelium.

    abstract::The effect of cryopreservation on ciliary activity of human nasal respiratory epithelium was evaluated. Samples were cryopreserved in a solution containing nutrient medium, 10% fetal calf serum, and two different concentrations (10 or 20%) of dimethyl sulfoxide and stored in liquid nitrogen at -196 degrees C for 2 wee...

    journal_title:Cryobiology

    pub_type: 杂志文章

    doi:10.1016/0011-2240(89)90056-4

    authors: Di Benedetto G,Gill J,Lopez-Vidriero MT,Clarke SW

    更新日期:1989-08-01 00:00:00

  • Effect of cooling rate on the survival of larvae, pupariation, and adult emergence of the gallfly Eurosta solidaginis.

    abstract::Freeze-tolerant third instar larvae of the gallfly Eurosta solidaginis were cooled at 10, 5, 1, and 0.1 degrees C min-1 to -40 degrees C and then warmed to +5 degrees C at 1 degree C min-1. After cooling and warming the larvae were transferred to 21 degrees C and the survival of larvae, success of pupariation, and adu...

    journal_title:Cryobiology

    pub_type: 杂志文章

    doi:10.1016/0011-2240(89)90024-2

    authors: Bale JS,Hansen TN,Nishino M,Baust JG

    更新日期:1989-06-01 00:00:00

  • Effect of chemical modifications on freeze denaturation of lactate dehydrogenase.

    abstract::Lactate dehydrogenase (LDH) was chemically ethyl-acetimidated (EA-), dimethyladipimidated (DMA-), carbamylated, acetylated, acetoacetylated, or succinylated in order to alter the ionic charges on the epsilon-amino group of lysine residues. Acetylation, acetoacetylation, and succinylation, which change the positive cha...

    journal_title:Cryobiology

    pub_type: 杂志文章

    doi:10.1016/0011-2240(89)90046-1

    authors: Seguro K,Tamiya T,Tsuchiya T,Matsumoto JJ

    更新日期:1989-04-01 00:00:00

  • Roles of unfrozen fraction, salt concentration, and changes in cell volume in the survival of frozen human erythrocytes.

    abstract::The cause of slow freezing injury and the basis of the protection by solutes like glycerol are subjects of debate. During slow freezing, cells are sequestered in unfrozen channels between ice crystals that grow by removing pure water from the channels. As a consequence, the solute concentration in the channels rises a...

    journal_title:Cryobiology

    pub_type: 杂志文章

    doi:10.1016/0011-2240(89)90030-8

    authors: Mazur P,Cole KW

    更新日期:1989-02-01 00:00:00

  • Long-term preservation of dried phosphofructokinase by sugars and sugar/zinc mixtures.

    abstract::We have demonstrated that sugars and suger/zinc mixtures can be used to preserve the activity of dried phosphofructokinase (PFK) during long-term storage over CaSO4. After 9 weeks in the presence of either 200 mM sucrose or 200 mM trehalose little loss of PFK activity was noted, with almost 60% of the original prefree...

    journal_title:Cryobiology

    pub_type: 杂志文章

    doi:10.1016/0011-2240(88)90045-4

    authors: Carpenter JF,Martin B,Loomis SH,Crowe JH

    更新日期:1988-08-01 00:00:00

  • Dependence of trehalose protective action on the initial phase state of dipalmitoylphosphatidylcholine bilayers.

    abstract::Dipalmitoylphosphatidylcholine (DPPC) bilayers hydrated in the presence of trehalose were equilibrated at various temperatures (4, 20, and 60 degrees C) corresponding to the crystalline Lc, gel L beta', and liquid-crystalline L alpha phases, respectively, and then desiccated at these temperatures or freeze-dried at -8...

    journal_title:Cryobiology

    pub_type: 杂志文章

    doi:10.1016/0011-2240(88)90033-8

    authors: Tsvetkova N,Tenchov B,Tsonev L,Tsvetkov T

    更新日期:1988-06-01 00:00:00

  • Peripheral tissue freezing in cryosurgery.

    abstract::The recently formulated bioheat equation of Weinbaum and Jiji which accounts for the vascular ultrastructure and blood perfusion was applied to the freezing of peripheral tissue. Using quasi-steady approximation the temperature distribution in the two-phase tissue and the motion of the frozen front were determined. Re...

    journal_title:Cryobiology

    pub_type: 杂志文章

    doi:10.1016/0011-2240(88)90009-0

    authors: Song WJ,Jiji LM

    更新日期:1988-04-01 00:00:00

  • Cryoprotection of red blood cells by 1,3-butanediol and 2,3-butanediol.

    abstract::1,3-Butanediol and 2,3-butanediol have been used in buffered solutions with 20, 30, or 35% (w/w) alcohol to cool erythrocytes to -196 degrees C at different cooling rates between 1 to 3500 degrees C/min, followed by slow or rapid rewarming. 1,3-butanediol shows the same shapes of red blood cell survival curves as 1,2-...

    journal_title:Cryobiology

    pub_type: 杂志文章

    doi:10.1016/0011-2240(88)90019-3

    authors: Mehl P,Boutron P

    更新日期:1988-02-01 00:00:00

  • Altered tyrosine and tryptophan metabolism during hypothermic hibernation in the 13-lined ground squirrel (Spermophilus tridecemlineatus).

    abstract::(1) Tyrosine and tryptophan metabolism in brain and peripheral tissues were studied in hypothermic hibernating and normothermic nonhibernating 13-lined ground squirrels (Spermophilus tridecemlineatus). (2) In the hypothermic hibernating state, there were significant elevations of brain stem tyrosine, norepinephrine, a...

    journal_title:Cryobiology

    pub_type: 杂志文章

    doi:10.1016/0011-2240(87)90054-x

    authors: Weekley BL,Harlow HJ

    更新日期:1987-12-01 00:00:00

  • Cryopreservation of fetal rat brain tissue later used for intracerebral transplantation.

    abstract::Intracerebral grafting of immature brain tissue is now widely used as a tool to study neuronal development and regeneration in the brain and spinal cord. This has stimulated the interest in methods for storage of such tissue before transplantation. In this study a method for cryopreservation of immature rat central ne...

    journal_title:Cryobiology

    pub_type: 杂志文章

    doi:10.1016/0011-2240(87)90014-9

    authors: Jensen S,Sørensen T,Zimmer J

    更新日期:1987-04-01 00:00:00

  • The effects of rapid cooling (cold shock) of ram semen, photoperiod, and egg yolk in diluents on the survival of spermatozoa before and after freezing.

    abstract::The effects of rapid cooling of semen (cold shock) from 30 degrees C to various temperatures above 0 degrees C on survival of ram spermatozoa suspended in diluents with or without egg yolk were assessed before and after freezing. Rapid cooling of extended semen from 30 to 15 degrees C had little or no effect on sperma...

    journal_title:Cryobiology

    pub_type: 杂志文章

    doi:10.1016/0011-2240(86)90061-1

    authors: Fiser PS,Fairfull RW

    更新日期:1986-12-01 00:00:00

  • Glass-forming tendency and stability of the amorphous state in the aqueous solutions of linear polyalcohols with four carbons. I. Binary systems water-polyalcohol.

    abstract::All the aqueous solutions of linear saturated polyalcohols with four carbons have been investigated at low temperature. Only ice has been observed in the solutions of 1,3-butanediol and 1,2,3- and 1,2,4-butanetriol. For same solute concentration, the glass-forming tendency on cooling is highest with 2,3-butanediol, wh...

    journal_title:Cryobiology

    pub_type: 杂志文章

    doi:10.1016/0011-2240(86)90031-3

    authors: Boutron P,Mehl P,Kaufmann A,Angibaud P

    更新日期:1986-10-01 00:00:00

  • Oscillations of trypsinogen activation.

    abstract::Trypsin activity oscillations are shown by the autocatalytic activation of trypsinogen at 0 degrees C in aqueous solution. The oscillations were observed for 3-4 days and show only slight decrease in enzyme activity. The zymogen has been kept at ice water temperature and pH 8.2 in the presence of Mn2+ ion. The mean pe...

    journal_title:Cryobiology

    pub_type: 杂志文章

    doi:10.1016/0011-2240(86)90053-2

    authors: Vajda T

    更新日期:1986-06-01 00:00:00

  • Vitrification of human monocytes.

    abstract::Human monocytes purified from peripheral blood by counterflow centrifugal elutriation were cryopreserved in a vitreous state at 1 atm pressure. The vitrification solution was Hanks' balanced salt solution (HBSS) containing (w/v) 20.5% Me2SO, 15.5% acetamide, 10% propylene glycol, and 6% polyethylene glycol. Fifteen mi...

    journal_title:Cryobiology

    pub_type: 杂志文章

    doi:10.1016/0011-2240(86)90001-5

    authors: Takahashi T,Hirsh A,Erbe EF,Bross JB,Steere RL,Williams RJ

    更新日期:1986-04-01 00:00:00

  • Cold exposure as a potentiating factor of pineal actions in nonhibernating mammals.

    abstract::Twenty-eight-day-old male rats were used in three experiments to study whether cold exposure potentiates pineal actions in nonhibernating mammals. The following questions were considered: (a) Can cold exposure increase the antigonadal effects of light deprivation? (b) Are the effects induced by blindness plus cold exp...

    journal_title:Cryobiology

    pub_type: 杂志文章

    doi:10.1016/0011-2240(86)90020-9

    authors: Sánchez-Barceló EJ,Cos S,Mediavilla MD

    更新日期:1986-02-01 00:00:00

  • Influence of cell concentration on the contribution of unfrozen fraction and salt concentration to the survival of slowly frozen human erythrocytes.

    abstract::We have shown previously that the survival of human red blood cells during slow freezing at 2% hematocrit is dependent more on the magnitude of the unfrozen fraction than on the salt concentration in that unfrozen fraction. In parallel, first Nei and more recently Pegg and colleagues have shown that survival is affect...

    journal_title:Cryobiology

    pub_type: 杂志文章

    doi:10.1016/0011-2240(85)90029-x

    authors: Mazur P,Cole KW

    更新日期:1985-12-01 00:00:00

  • Preservation of viable cells in the undercooled state.

    abstract::Previous studies into the mechanisms governing the freezing of cells in the absence of extracellular ice have been extended to develop a method for the preservation of viable cells in the undercooled state. Deep undercooling of cells is achieved by suspending fine droplets of the cells in oil to make an emulsion, thus...

    journal_title:Cryobiology

    pub_type: 杂志文章

    doi:10.1016/0011-2240(85)90030-6

    authors: Mathias SF,Franks F,Hatley RH

    更新日期:1985-12-01 00:00:00

  • An investigation on the use of cryosurgery for treatment of bone spavin, splint, and fractured splint bone injuries in standardbred horses.

    abstract::Bone spavin, splint, and fractured splint bone injuries have been treated with varying methodologies at Wheatley Hall Farm Equine Clinic. Cryosurgery is the most successful. With cryosurgery the small, pain-producing afferent C fibers are destroyed, and painful neuromas do not return. Injured sites were cryosurgically...

    journal_title:Cryobiology

    pub_type: 杂志文章

    doi:10.1016/0011-2240(85)90158-0

    authors: McKibbin LS,Paraschak DM

    更新日期:1985-10-01 00:00:00

  • Effect of cryoprotectants on the viability and function of unfrozen human polymorphonuclear cells.

    abstract::High concentrations of membrane permeable cryoprotectants are necessary to protect human polymorphonuclear leukocytes from osmotic stress injury during freezing, but there are reports that some cryoprotectants are chemically toxic. Cells were exposed to various concentrations of glycerol, dimethyl sulfoxide, or ethyle...

    journal_title:Cryobiology

    pub_type: 杂志文章

    doi:10.1016/0011-2240(85)90181-6

    authors: Takahashi T,Bross JB,Shaber RE,Williams RJ

    更新日期:1985-08-01 00:00:00

  • Frequency and coordination of ciliary beat after cryopreservation of respiratory epithelium.

    abstract::The effect of cryopreservation on human nasal mucosal biopsies was evaluated by determining the frequency and coordination of the ciliary beat. Samples were cryopreserved in a medium containing 80% Gey's balanced salt solution, 10% dimethyl sulfoxide, and 10% fetal calf serum. After thawing, the samples were put in a ...

    journal_title:Cryobiology

    pub_type: 杂志文章

    doi:10.1016/0011-2240(85)90164-6

    authors: Wulffraat NM,Veerman AJ,Stamhuis IH

    更新日期:1985-04-01 00:00:00

  • Platelet cryopreservation with glycerol, dextran, and mannitol: recovery of 5-hydroxytryptamine uptake and hypotonic stress response.

    abstract::Human platelets were frozen in 0.5 M glycerol, 0.5 M glycerol + 3% Dextran T40, or 0.5 M glycerol + 5% mannitol. The recovery of active transport of 5-hydroxytryptamine (5-HT) and the hypotonic stress response after freezing were dependent on the rate of cooling: the optimum range of rates was between 12 and 23 degree...

    journal_title:Cryobiology

    pub_type: 杂志文章

    doi:10.1016/0011-2240(85)90002-1

    authors: Brodthagen UA,Armitage WJ,Parmar N

    更新日期:1985-02-01 00:00:00

  • Improved recovery of post-thaw motility and vitality of human spermatozoa cryopreserved in the presence of dithiothreitol.

    abstract::Semen was collected in the laboratory from nine healthy donors. The concentrations and the percentages of live and motile spermatozoa in all semen samples were within the normal range. Each sample was diluted with citrate-egg yolk-glycerol medium with and without 5 mM dithiothreitol (DTT). Samples were frozen in liqui...

    journal_title:Cryobiology

    pub_type: 杂志文章

    doi:10.1016/0011-2240(84)90052-x

    authors: Rao B,David G

    更新日期:1984-10-01 00:00:00

  • Fc receptors and human T lymphocytes in frozen-thawed peripheral blood cells.

    abstract::The present study was carried out to investigate the influence of cryopreservation on human T-cell subsets defined by their membrane receptors for Fc IgM (TM) and Fc IgG (TG) and by their membrane antigens. For this purpose isolated T cells, obtained by neuraminidase-treated sheep erythrocyte (E-N) rosetting, and enri...

    journal_title:Cryobiology

    pub_type: 杂志文章

    doi:10.1016/0011-2240(84)90080-4

    authors: Pusztai-Markos Z,Ebenfeld R,Scheiwe MW

    更新日期:1984-08-01 00:00:00

  • Factors influencing renal cryopreservation. II. Toxic effects of three cryoprotectants in combination with three vehicle solutions in nonfrozen rabbit cortical slices.

    abstract::The [K+]/[Na+] ratio of rabbit renal cortical slices was used to examine, at 25 degrees C, the effects on viability of three cryoprotectant agents (CPA) (dimethyl sulfoxide (Me2SO), ethylene glycol, and glycerol) in combination with three vehicle solutions (Krebs-Henseleit (K-H), solution A, and RPS-2). Viability asse...

    journal_title:Cryobiology

    pub_type: 杂志文章

    doi:10.1016/0011-2240(84)90323-7

    authors: Clark P,Fahy GM,Karow AM Jr

    更新日期:1984-06-01 00:00:00

  • In vitro colony formation by cryopreserved primary human tumor cells.

    abstract::The effect of cryopreservation on the ability of primary human cancer cells to form colonies in a two-layer agar system was examined. Although considerable variation occurred, concentrations of 5 or 10% dimethylsulfoxide employed with slow freezing rates allowed survival of colonies in the range 20-40% or greater of n...

    journal_title:Cryobiology

    pub_type: 杂志文章

    doi:10.1016/0011-2240(84)90215-3

    authors: Allen ED,Gau TC,Natale RB

    更新日期:1984-04-01 00:00:00

  • Thermally defined cryomicroscopy and thermodynamic analysis in lymphocyte freezing.

    abstract::A cryomicroscope is described which provides the possibility of quantifying the volume loss of cells during freezing, detection of intracellular ice formation during cooling and warming, as well as the determination of viability as function of (constant) cooling rates. The basic mechanisms occurring in cryopreservatio...

    journal_title:Cryobiology

    pub_type: 杂志文章

    doi:10.1016/0011-2240(84)90026-9

    authors: Scheiwe MW,Körber C

    更新日期:1984-02-01 00:00:00

  • Cellular and molecular consequences of reduced cell water content.

    abstract::Cell volumes, viability, ultrastructure, and metabolism have been studied in mouse L cells at reduced water contents. Dehydration was achieved by addition of sorbitol to the incubation medium at concentrations of 0.15, 0.3, and 0.6 m. In 0.3 m sorbitol, cell volume was reduced to about 35% of the initial control level...

    journal_title:Cryobiology

    pub_type: 杂志文章

    doi:10.1016/0011-2240(83)90048-2

    authors: Mansell JL,Clegg JS

    更新日期:1983-10-01 00:00:00

  • Ventricular fibrillation in hibernators and nonhibernators.

    abstract::Previous studies have shown that there are differences between hibernators and nonhibernators in the susceptibility to ventricular fibrillation. In an attempt to clarify these differences ventricular fibrillation was induced in isolated hearts of the hibernator, the woodchuck, Marmota monax by cooling, warming, punctu...

    journal_title:Cryobiology

    pub_type: 杂志文章

    doi:10.1016/0011-2240(83)90031-7

    authors: Duker GD,Olsson SO,Hecht NH,Senturia JB,Johansson BW

    更新日期:1983-08-01 00:00:00

  • Contributions of unfrozen fraction and of salt concentration to the survival of slowly frozen human erythrocytes: influence of warming rate.

    abstract::The general belief is that slow freezing injury is either the result of exposure to high salt concentrations or the result of excessive cell shrinkage. Increased salt concentration arises as increasing amounts of pure ice precipitate out of solution during freezing and cause the liquid-filled channels in which the cel...

    journal_title:Cryobiology

    pub_type: 杂志文章

    doi:10.1016/0011-2240(83)90016-0

    authors: Mazur P,Rigopoulos N

    更新日期:1983-06-01 00:00:00

  • Viability tests of cryopreserved endocrine pancreatic cells.

    abstract::Collagenase-isolated islets, which had been cultured for 1 week, were frozen at two different cooling rates. Islets frozen at 5 degrees C/min behaved from a functional point of view very similarly to that of nonfrozen, cultured control islets, except for a reduced maximal insulin secretory capacity and a reduced insul...

    journal_title:Cryobiology

    pub_type: 杂志文章

    doi:10.1016/0011-2240(83)90005-6

    authors: Andersson A,Sandler S

    更新日期:1983-04-01 00:00:00

  • The effects of different concentrations of glycerol and dimethylsulfoxide on the metabolic activities of kidney slices.

    abstract::Kidney slices either were exposed to the cryoprotectants for 1 hr at room temperature and subsequently washed and incubated in fresh KR buffer containing only the radioactive metabolic tracers, or were immediately incubated for 2 hr at 37 degrees C in KR buffer containing the cryoprotectant and the tracers. Exposure t...

    journal_title:Cryobiology

    pub_type: 杂志文章

    doi:10.1016/0011-2240(83)90059-7

    authors: Penninckx F,Cheng N,Kerremans R,Van Damme B,De Loecker W

    更新日期:1983-02-01 00:00:00

  • Problems of cryohemorrhoidectomy.

    abstract::One thousand cryohemorrhoidectomies were performed in the past 7 years (1973-1979). Ninety percent of the patients were satisfied with the technique; approximately one-third of the patients experienced severe to moderate pain and 11% had recurrences or related problems. The majority of patients with postoperative pain...

    journal_title:Cryobiology

    pub_type: 杂志文章

    doi:10.1016/0011-2240(82)90154-7

    authors: Oh C

    更新日期:1982-06-01 00:00:00

  • Functional preservation of the mammalian kidney. IV. Functional effects of perfusion with dimethyl sulfoxide (DMSO) at normothermia.

    abstract::Rabbit kidney were perfused at 37degreesC with various concentrations of DMSO in a K+-Mg2+-rich perfusate. The effects of DMSO on various functional parameters of the rabbit kidney perfused for 60 min were compared with the functional effects of perfusion without DMSO under the same conditions. DMSO produced deviation...

    journal_title:Cryobiology

    pub_type: 杂志文章

    doi:10.1016/0011-2240(76)90101-2

    authors: Karow AM Jr,Jeske AH

    更新日期:1976-08-01 00:00:00

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