Ternary Graphene Oxide and Titania Nanoparticles-Based Nanocomposites for Dye Photocatalytic Degradation: A Review.

Advanced oxidation processes stand as green alternatives for the decontamination of waste waters. Photocatalysis is an advanced oxidation process in which a semiconductor material absorbs photon energy and triggers redox reactions capable of degrading organic pollutants. Titanium dioxide (TiO, titania) represents one of the most popular choices of photocatalytic materials, however the UV-activation of its anatase phase and its high charge recombination rate decrease its photocatalytic activity and weaken its potential.

Effects of hypnosis, cognitive therapy, hypnotic cognitive therapy, and pain education in adults with chronic pain: a randomized clinical trial.

Chronic pain is a significant health problem worldwide with limited pharmacological treatment options. This study evaluated the relative efficacy of 4 treatment sessions each of 4 nonpharmacological treatments: (1) hypnotic cognitive therapy (using hypnosis to alter the meaning of pain); (2) standard cognitive therapy; (3) hypnosis focused on pain reduction, and (4) pain education. One hundred seventy-three individuals with chronic pain were randomly assigned to receive 4 sessions of 1 of the 4 treatments.

Hypnosis Attitudes: Treatment Effects and Associations With Symptoms in Individuals With Cancer.

Attitudes about hypnosis are associated with hypnotic responsiveness. However, little is known about how hypnosis attitudes change with treatment and if those changes are associated with better outcomes. This study examined whether an intervention based on the Valencia Model of Waking Hypnosis combined with Cognitive-Behavioral Therapy changed attitudes about hypnosis in a sample of patients with a history of cancer.

Novel dehydroepiandrosterone benzimidazolyl derivatives as 5α-reductase isozymes inhibitors.

5α-R isozymes (types 1 and 2) play an important role in prostate gland development because they are responsible for intraprostatic dihydrotestosterone (DHT) levels when the physiological serum testosterone (T) concentration is low. In this study, we synthesized seven novel dehydroepiandrosterone derivatives with benzimidazol moiety at C-17, and determined their effect on the activity of 5α-reductase types 1 and 2. The derivatives with an aliphatic ester at C-3 of the dehydroepiandrosterone scaffold induced specific inhibition of 5α-R1 activity, whereas those with a cycloaliphatic ester (cyclopropyl, cyclobutyl, or cyclopentyl ring) or an alcohol group at C-3 inhibited the activity of both isozymes.

Effect of eradication of Helicobacter pylori and iron supplementation on the iron status of children with iron deficiency.

Background And Aims: We undertook this study to evaluate the effect of Helicobacter pylori eradication and iron supplementation on the iron nutritional status in children with iron deficiency.

Methods: Seven hundred and one children from four public schools in Mexico City were screened to evaluate their iron status. Of them, 72 children with iron deficiency or with anemia were included in this study and were tested for H.

Prevalence of anemia and deficiency of iron, folic acid, and zinc in children younger than 2 years of age who use the health services provided by the Mexican Social Security Institute.

Background: In Mexico, as in other developing countries, micronutrient deficiencies are common in infants between 6 and 24 months of age and are an important public health problem. The objective of this study was to determine the prevalence of anemia and of iron, folic acid, and zinc deficiencies in Mexican children under 2 years of age who use the health care services provided by the Mexican Institute for Social Security (IMSS).

Methods: A nationwide survey was conducted with a representative sample of children younger than 2 years of age, beneficiaries, and users of health care services provided by IMSS through its regular regimen (located in urban populations) and its Oportunidades program (services offered in rural areas).

Inhibition of intestinal dipeptide transport by the neuropeptide VIP is an anti-absorptive effect via the VPAC1 receptor in a human enterocyte-like cell line (Caco-2).

1. Optimal dipeptide and peptidomimetic drug transport across the intestinal mucosal surface is dependent upon the co-operative functional activity of the di/tripeptide transporter hPepT1 and the Na(+)/H(+) exchanger NHE3. The ability of the anti-absorptive enteric neuropeptide VIP (vasoactive intestinal peptide) to modulate dipeptide uptake was determined using human intestinal (Caco-2) epithelial cell monolayers.

Physiological characteristics of allo-cholic acid.

The physiological characterstics of allo-cholic acid (ACA), a typically fetal bile acid that reappears during liver regeneration and carcinogenesis were investigated. [(14)C] Tauro-ACA (TACA) uptake by Chinese hamster ovary cells expressing rat organic anion transporter polypeptide (Oatp)1 or sodium-taurocholate cotransporter polypeptide (Ntcp) was lower than that of [(14)C]taurocholic acid (TCA). Although TACA inhibited ATP-dependent TCA transport across plasma membrane vesicles from Sf9 cells expressing rat or mouse bile salt export pump (Bsep), no ATP-dependent TACA transport was found.

H/dipeptide absorption across the human intestinal epithelium is controlled indirectly via a functional Na/H exchanger.

Background & Aims: For optimal nutrient absorption to occur, the enterocyte must express a range of specialist ion-driven carrier proteins that function cooperatively in a linked and mutually dependent fashion. Thus, absorption via the human intestinal H(+)-coupled di/tripeptide transporter (hPepT1) is dependent on maintenance of the trans-apical driving force (the H(+)-electrochemical gradient) established, in part, by brush-border Na(+)/H(+) exchanger (NHE3) activity. This study aimed to examine whether physiologic regulation of NHE3 activity can limit hPepT1 capacity and, therefore, protein absorption after a meal.

Changes in the pool of bile acids in hepatocyte nuclei during rat liver regeneration.

Background/aims: To investigate changes in nuclear bile acids (BAs) during rat liver regeneration.

Methods: Nuclei were isolated from control rat livers and after two-thirds partial hepatectomy (PH). BAs in bile, liver homogenate and nuclei were measured by gas chromatography-mass spectrometry.

A randomized trial of moderately early low-dose dexamethasone therapy in very low birth weight infants: dynamic pulmonary mechanics, oxygenation, and ventilation.

Objective: Dexamethasone is used in very low birth weight (VLBW) ventilator-dependent infants to prevent or decrease the severity of chronic lung disease. We reported a significant increase in respiratory compliance during a 7-day weaning course of moderately early dexamethasone therapy (0.5 mg/kg/d) in VLBW infants, along with a shorter duration of mechanical ventilation and O2 supplementation.