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At least 343 records · Page 19Linked to original sources
PubMed1983

[Effect of sodium thiosulfate on viable areas of the pancreas in experimental pancreatitis].

Experimental pancreatitis in white rats is marked by stromal edema, dystrophic changes of acinar cells, with intracellular edema in an intact part of the pancreas. Subsequently the acinar cells undergo intracellular regeneration and hypertrophy, which is accompanied by intensive incorporation of 14C-leucin into glandular proteins. Sodium thiosulfate prevents the development of stromal edema and intracellular edema of the acinar cells and retards the development of acinar cell hypertrophy. The drug produces an inhibitory action on 14C-leucin incorporation into pancreatic proteins.

Animals↗
PubMed1983

Effectiveness of "two-route chemotherapy" using cisplatin and its antidote, sodium thiosulfate, on lifespan of rats bearing metastatic liver tumors.

The therapeutic efficacy of "two-route chemotherapy" (TRC) using cisplatin (DDP) and its potent antidote, sodium thiosulfate (STS), was studied on rat metastatic liver tumors. Twenty mg/kg of DDP was given to rats via the hepatic artery in combination with systemic STS at a dose of 1054 mg/kg (100-fold molar ratio to 20 mg/kg of DDP) or at two doses of 1054 mg/kg. As controls, 5 or 4 mg/kg of DDP alone was given intra-arterially or iv. Antitumor effects were evaluated by prolongation in lifespan after the tumor cell inoculation. Side effects were assessed by weight loss, BUN, and serum transaminases after the chemotherapy. TRC resulted in the longest lifespan, with a minimum weight loss and without elevation of BUN or serum transaminases. The therapeutic efficacy of TRC was enhanced by temporary ligation of the portal vein for 5 minutes, performed simultaneously with DDP infusion. Our findings clearly indicate the effectiveness of TRC using intra-arterial DDP in a high dose and in combination with iv STS.

Animals↗
PubMedDate not supplied

Thiosulfate-citrate-bile salts-sucrose agar and its selectivity for clinical and marine vibrio organisms.

Recently documented Vibrio cholerae and non-cholera vibrio infections in Florida and other American waters led to a study to determine the selectivity of thiosulfate-citrate-bile salts-sucrose media (TCBS). Thirty-one species with 188 different strains of clinical, marine, and stock origin were examined on the TCBS media. One hundred seventy-seven of the 188 strains grew. Nine species had the typical yellow colony appearance that might be confused with V. cholerae and nine species were green, potentially confused with V. parahemolyticus or V. vulnificus. Old versus new media were compared with mixed results. Consistent with earlier studies, TCBS grew vibrios well with distinctive morphology. However, its limited selectivity needs be more widely appreciated in clinical laboratories. Its widespread use is advocated to detect the vibrio infections associated with seafood ingestion or wounds exposed to seawater.

Agar↗
PubMed1982

"Two route chemotherapy" using cis-diamminedichloro-platinum(II) and its antidote, sodium thiosulfate, for peritoneally disseminated cancer in rats.

The effects of "two route chemotherapy" using cis-diamminedichloroplatinum-(II) (DDP) and its antidote sodium thiosulfate (STS), given ip and sc, respectively, were assessed in the case of peritoneally disseminated cancer in rats. Administration of STS sc to mice 1 min before DDP ip was found to be the most effective in protecting the animals against the lethal toxicity of DDP. The LD50 values of DDP ip with and without STS were about 55 mg/kg and 14 mg/kg, respectively. This "two route chemotherapy" using DDP and STS was significantly superior in therapeutic efficacy to single treatment with DDP.

Animals↗
PubMed1981

[Changes in vascular permeability and the state of mesenteric mast cells in acute experimental pancreatitis and following treatment with sodium thiosulfate].

Increased vascular permeability of the mesentery was revealed in rats with experimental pancreatitis in the stage of pancreonecrosis with hemorrhagic component. This circumstance is related to a great extent to the release of biogenic amines, histamine and serotonine, from mast cells of the "microregion" and to the diminution of the amount of tissue eosinophils, an antihistamine link in the permeability control. Application of sodium thiosulfate improved vascular permeability, normalized the content of biogenic amines in mast cells and preserved the amount of eosinophils in the mesentery because of the protective effect of the drug on the pancreas.

Acute Disease↗
PubMed1995

[Polyethylene glycol-thiosulfate (PEG-Th) staining--a modification of the AgNOR method].

Visualization and analysis of nucleolus organizer regions (NOR) by a silverstaining is a well accepted method in cytological and histological tumor diagnostic. For specific staining of the NOR the AgNOR-method developed by HOWELL and BLACK (1980) and PLOTON et al. (1986) is performed. One major disadvantage of the AgNOR-method is the instability of the reaction products and therefore the short durability of the slide preparations. A modification of the AgNOR-method, the PEG-Th-staining, leads not only to a longer durability of the reaction products but also to a better contrast within the sections. Main characteristic of the PEG-Th-staining is a postfixation of the specific silver precipitations for 5 min in a 5% sodium thiosulfate solution. It could be proven by image analysis that there is no significant difference between the morphometric parameters evaluated on AgNOR- and PEG-Th-stained sections. Therefore results evaluated on PEG-Th-stained sections are absolutely comparable to those obtained on sections stained with the AgNOR-method thus providing the advantage of a longer durability of the reaction products and easier evaluation.

Coloring Agents↗
PubMed1995

[Intrapleural DDP and systemic thiosulfate rescue in the treatment of malignant pleural effusion].

One hundred twenty cases of malignant pleural effusion were treated by intrapleural administration of large doses of DDP (500-1,000 mg) followed by iv infusion of sodium thiosulfate for 3 days. Each patient received 1-4 cycles of treatment. Of 120 cases, 89 had their effusion completely disappeared and in 6 of them, it was accompanied by complete regression of tumors in the lung. Partial response was observed in 19 cases with an overall response rate of 90.0%. The median remission period was 6.4 month. Severe (grade III and IV) gastrointestinal, renal toxicity and myelosuppression occurred in 46,8 and 12 cases, respectively, Two patients died of severe intoxication.

Adenocarcinoma↗
PubMed1995

Antidotal effect of sodium thiosulfate in mice exposed to acrylonitrile.

Although acute acrylonitrile (ACN) toxicity is very profound, the mechanism of its toxicity and immediate lethality is unclear. Many have suggested that ACN or its reactive metabolite acts directly at the target tissues, while others have implicated the release of CN ions from the parent compound as the toxic moiety. Since sodium thiosulfate (STS) is both an effective cyanide antidote and neutralizing agent capable of binding to reactive chemicals or metabolites, its antidotal role was investigated in mice exposed to 60 mg/kg intraperitoneal (IP) ACN injection. Treatment with an IP injection of 400 mg/kg of STS from 10 to 30 minutes before ACN administration protected animals from ACN-induced lethality. All mice appeared normal after prophylactic treatment with STS and showed no ill effects from ACN exposure. Similar data was observed when STS was administered 10 and 30 minutes after ACN administration. Non-protein sulfhydryl (NPSH) concentration was determined in the brain, kidneys, and liver of the mice exposed to a single or multiple doses of STS and ACN. The levels of NPSH were significantly lowered by ACN in the liver (45% of the control), and kidneys (51% of the control), whereas in the brain NPSH levels were least affected and decreased modestly (85% of the control) following either acute or chronic administration of acrylonitrile. The data indicate a marked protective effect of STS either before or after ACN exposure and this STS-induced antidotal response does not involve GSH in the brain.

Acrylonitrile↗
PubMed1996

In vitro and animal studies of sodium thiosulfate as a potential chemoprotectant against carboplatin-induced ototoxicity.

When carboplatin (cis-diammine-1,1-cyclobutane-dicarboxylato-platinum) delivery to brain tumors is optimized with osmotic blood-brain barrier disruption (BBBD), high frequency hearing loss can result. Treatment with sodium thiosulfate (STS) blocked carboplatin cytotoxicity against the LX-1 human small cell lung carcinoma cell line in vitro. STS decreased carboplatin-induced ototoxicity in a guinea pig model, as determined by electrophysiological measurements and analysis of inner ear outer hair cell numbers. Protection was found when STS was administered up to 8 h subsequent to carboplatin but not 24 h after carboplatin. In a rat model of osmotic BBBD, STS was neurotoxic when given immediately after BBBD but not when given 60 min after BBBD, when the barrier is reestablished. Thus, delayed administration of STS may provide a mechanism to reduce the cochlear toxicity caused by BBBD-enhanced carboplatin delivery to the brain.

Acoustic Stimulation↗
PubMed1997

[Relieving effect of sodium thiosulfate on transarterial chemotherapeutic emesis].

It was reported that sodium thiosulfate (STS) was contributed to antivomiting effect in 20 transarterial chemotherapic patients. The antitumor sensitivity of STS (< 500 micrograms/ml) adjuncting to the ADM, MMC, CDDP and other four agens (1 x PPC/ml) individually on two tumor cells studied by MTT test in vitro and no antitumor activity of adjuvant of STS were obviously obliterated (P > 0.05) except for CDDP clinically, to comparing the adjuncting effects of STS (iv. 30 min ahead) or metochlopramidum (im. 30 min ahead) to ADM, MMC and CDDP on HCC (40 cases), the degrees of vomiting in hepatoma patient after transcatheter arterial chemoem bolization with ADM, MMC and CDDP were statisticaly analysec. It have been proven that STS was contributed to the low incidence of vomiting and superior to metocloe pramidum, without worsening of the chemotherapy of HCC. It is worth futher studying adjuvant STS to other antitumor drugs and exploring potential application of chematherapy in cancer.

Adult↗
PubMed1997

[Efficacy of combined use of sodium thiosulfate in percutaneous isolated liver chemoperfusion of cisplatin under complete hepatic venous isolated and charcoal hemoperfusion].

We herein evaluated the efficacy of combined use of sodium thiosulfate (STS) in isolated liver chemoperfusion of cisplatin (CDDP) under complete hepatic venous isolation and charcoal hemoperfusion (HVI.CHP). Dogs were divided into two groups; group I (n = 5), CDDP (4 mg/kg) + STS (4 g/body) and group II (n = 5), CDDP (4 mg/kg). In both groups, CDDP was intraarterially administered for 20 minutes under HVI.CHP. In addition, in group I, STS infusion was administered for 20 minutes via the outlet side of CHP filter. The adsorption rates of free and total CDDP of CHP filter were in a range of 50-80%, and the rates in group I were higher than in group II. At all sampling points, the AUC (microgram.min/ml) of free CDDP was not different between the two groups. However, the AUC of total CDDP at postfilter [group I: 35.3 +/- 2.7 (mean +/- SD); group II: 63.5 +/- 21.5] and systemic serum (group I: 24.9 +/- 8.6, group II: 43.5 +/- 13.5) was significantly lower in group I than in group II (p < 0.05). The cumulative amounts of urinary excretion of CDDP (microgram/kg) were 39.5 +/- 12.1 and 13.5 +/- 9.3 in groups I and II, respectively, showing a significant increase in group I (p < 0.01). These results indicated that the use of STS in percutaneous isolated liver chemoperfusion of CDDP under HVI.CHP could further reduce systemic toxicities of CDDP, by increasing CDDP filter extraction of CHP filter and urinary CDDP excretion.

Animals↗
PubMed1998

First evidence of otoprotection against carboplatin-induced hearing loss with a two-compartment system in patients with central nervous system malignancy using sodium thiosulfate.

Sodium thiosulfate (STS) provides protection against carboplatin-induced ototoxicity in an animal model. The purpose of this study was to determine the STS dose required for otoprotection, in patients with malignant brain tumors treated with carboplatin in conjunction with osmotic blood-brain barrier disruption. Twenty-nine patients received STS intravenously 2 hr after carboplatin. Doses were escalated from 4 g/m2 to 8, 12, 16 and 20 g/m2 on consecutive months. Audiologic assessment was performed at baseline and monthly. The audiograms were compared with those of 19 similarly treated historical control patients who did not receive STS. The incidence of ototoxicity in the historical control group of patients was 79% (15/19). This group had an average loss of 20.8 +/- 5.9 dB (n = 19) at 8 kHz after one treatment with carboplatin, whereas the STS treatment group lost only 3.7 +/- 2 dB (n = 15) after one treatment. This difference was statistically significant as assessed by Student's t test (P < .05). Furthermore, patients in the STS treatment group with excellent base-line hearing showed little change in hearing thresholds at 8 kHz after the second treatment (8.0 +/- 8.3 dB) (n = 5) compared with the historical control patients with excellent base-line hearing, (40.5 +/- 8.6 dB) (n = 11). Our data support that doses of 16 or 20 g/m2 of STS decrease carboplatin-induced hearing loss without central nervous system entry. Clinical demonstration of an otoprotective effect with a two-compartment system to prevent drug-induced hearing loss, while preserving central nervous system cytotoxicity, has not been reported previously.

Adolescent↗
PubMed2004

Interference of thiosulfate during colorimetric analysis of hexavalent chromium using 1,5-diphenylcarbazide method.

Thiosulfate (S(2)O(3)(2-)) contained in the media for autotrophic Cr (VI) reduction was found to interfere with Cr (VI) measurement following the 1,5-diphenylcarbazide (DPC) method. The interference was confirmed at several abiotic and biotic conditions, and was influenced by S(2)O(3)(2-) concentration, pH, and the media components. At neutral to alkaline pH, 500 mg/L of S(2)O(3)(2-) did not cause interference, while 4 mg/L of S(2)O(3)(2-) resulted in the interference at pH 2.0. Atomic absorption spectrophotometry could be an alternative method when the interference by S(2)O(3)(2-) is expected.

Journal Article↗
PubMed2005

Modulatory influence of sodium 2-propenyl thiosulfate from garlic on cyclooxygenase activity in canine platelets: possible mechanism for the anti-aggregatory effect.

We previously found that sodium 2-propenyl thiosulfate (2PTS) has an anti-aggregatory effect in vitro on both canine and human platelets at relatively low concentrations, but the extent of aggregation tends to return to the control level at high concentrations. To clarify the mechanism of this modulatory influence of 2PTS on the aggregation of platelets, we investigated the effects of 2PTS on cyclooxygenase (COX) activity and the reduced glutathione (GSH) concentration in canine platelets. Platelet COX activity was inhibited by 2PTS in a dose-dependent manner up to 0.1 mM, but tended to return to the control level at 1 mM. In contrast, the platelet GSH concentration decreased in a dose-dependent manner after treatment with 2PTS and a significant decrease was observed at 0.1 mM (P<0.05) and 1 mM (P<0.001). Furthermore, the activity of purified COX-1 was directly inhibited by addition of GSH in a dose-dependent manner. From these results, we conclude that the 2PTS-induced inhibition of platelet aggregation occurs as a result of inhibition of COX activity. Additionally, 2PTS may have a modulatory effect on platelet aggregation by affecting the platelet GSH concentration.

Allyl Compounds↗
PubMed2002

Identification and characterization of single-domain thiosulfate sulfurtransferases from Arabidopsis thaliana.

Sulfurtransferases/rhodaneses (ST) are a group of enzymes widely distributed in all three phyla that catalyze the transfer of sulfur from a donor to a thiophilic acceptor substrate. All ST contain distinct structural domains, and can exist as single-domain proteins, as tandemly repeated modules in which the C-terminal domain bears the active site, or as members of multi-domain proteins. We identified several ST in Arabidopsis resembling the C-terminus of the Arabidopsis two-domain ST1 and the single-domain GlpE protein from Escherichia coli. Two of them (accession numbers BAB10422 and BAB10409) were expressed in E. coli and purified. Both proteins showed thiosulfate-specific ST enzyme activity.

Amino Acid Sequence↗
PubMed2000

Sodium thiosulfate protects against acrylonitrile-induced elevation of glial fibrillary acidic protein levels by replenishing glutathione.

Acrylonitrile (ACN) like many organic solvents produce neurotoxicity by elevating brain glial fibrillary acidic protein (GFAP), a putative biomarker of astrogliosis. In this study we tested the hypothesis that sodium thiosulfate (STS) protective action against ACN-induced astrogliosis is glutathione (GSH) mediated. Male Sprague-Dawley rats were administered for 2 weeks intraperitoneal doses (50 mg/kg body weight) of the ACN, with or without STS as outline in the Methods section. Specific brain regions were tested for GFAP, GSH and glutathione-S-transferase (GST) enzyme activity. In the brain regions tested STS significantly (P</=0.05) maintained GFAP levels at the basal saline control levels, when compared to ACN-treated groups. STS also significantly (P</=0.05) increased GSH levels in these brain regions with a corresponding increased in GST enzyme activity. Although the data indicated that STS antidotal action against ACN-induced neurotoxicity is likely to involve GSH and GST activity, other complex series of mechanisms may be involved.

Journal Article↗
PubMed1996

Kinetics and Mechanism of the Ferrate Oxidation of Thiosulfate and Other Sulfur-Containing Species.

The kinetics of the reaction of ferrate, FeO(4)(2-), with several sulfur-containing species in aqueous media have been investigated, and the results are reported. It was found that, when the reductant is in excess, ferrate rapidly oxidizes thiosulfate to sulfite, benzenesulfinate to benzenesulfonate, methionine to its corresponding sulfoxide, and dimethyl sulfoxide to dimethyl sulfone. The rate law for each reaction is first order with respect to each reactant and first order with respect to the hydrogen ion concentration. A mechanism for each oxidation reaction is discussed.

Journal Article↗