Cytochrome c levels link mitochondrial function to plant growth and stress responses through changes in SnRK1 pathway activity.

Energy is required for growth as well as for multiple cellular processes. During evolution, plants developed regulatory mechanisms to adapt energy consumption to metabolic reserves and cellular needs. Reduced growth is often observed under stress, leading to a growth-stress trade-off that governs plant performance under different conditions.

Cortisol and DHEA-S levels in pregnant women with severe anxiety.

Background: A complex interaction between cortisol and dehydroepiandrosterone-sulphate (DHEA-S) is crucial in the stress system balance; several studies have reported increased cortisol levels during chronic stress and a weak counter-regulation by DHEA-S. During pregnancy, scarce information about this system is available, although cortisol and DHEA-S play an important role in the initiation and acceleration of labor. We conducted the present study in order to determine both cortisol and DHEA-S levels during the last trimester of pregnancy in patients exhibiting severe anxiety.

Testosterone deficiency in dialysis patients: Difference between dialysis techniques.

Unlabelled: Testosterone deficiency is a prevalent condition in male patients with chronic kidney disease. However, it is not known whether the type of renal replacement therapy has an impact on testosterone deficiency that accompanies loss of renal function.

Methods: The cross-sectional study enrolled 79 prevalent male patients on dialysis; 43 on haemodialysis (HD) and 36 on peritoneal dialysis (PD).

[New transmission scenarios of the Argentine hemorrhagic fever since the introduction of the live attenuated junin virus vaccine (Candid #1): an experience in migrant workers].

The Argentine hemorrhagic fever (AHF) is a severe acute viral disease caused by the Junin virus of the Arenaviridae family. The AHF endemic area coincides geographically with the largest grain export agro-industrial complex of the country [Argentina]. Since the implementation of vaccination with the Candid #1 vaccine, a significant reduction in incidence was achieved and risk patterns were modified.

[Early kidney transplant failure and return to peritoneal dialysis: preliminary study of permeability and dialysis efficacy].

Unlabelled: The return to dialysis after kidney transplant (TX) failure is increasingly common. On returning to dialysis after TX failure, there is usually a similar or worse clinical situation than in patients who are on haemodialysis or peritoneal dialysis (PD) for the first time. Although there are several studies on the clinical situation of patients who return to PD after long periods with a functioning TX, there is hardly any information on the progression of a patient subgroup returning to PD after TX failure a few days or weeks after transplantation.

Oral paricalcitol as antiproteinuric agent in chronic kidney disease.

Background: Vitamin D has an important regulatory effect on the renin-angiotensin-aldosterone system, playing a central role in the regulation of proteinuria. We therefore studied the antiproteinuric effect of paricalcitol.

Methods: 36 patients with an estimated GFR of 30-90 mL/min/1.

Therapeutic effects of progesterone in animal models of neurological disorders.

Substantial evidence supports that progesterone exerts many functions in the central and peripheral nervous system unrelated to its classical role in reproduction. In this review we first discussed progesterone effects following binding to the classical intracellular progesterone receptors A and B and several forms of membrane progesterone receptors, the modulation of intracellular signalling cascades and the interaction of progesterone reduced metabolites with neurotransmitter receptors. We next described our results involving animal models of human neuropathologies to elucidate the protective roles of progesterone.

Endogenous testosterone, muscle strength, and fat-free mass in men with chronic kidney disease.

Objective: Testosterone deficiency is a common finding in men with chronic kidney disease (CKD). Testosterone is thought to play an important anabolic role in muscle synthesis, and muscle wasting is an important and deleterious characteristic of protein-energy wasting (PEW) in CKD. It is presently unknown if reduced endogenous testosterone associates with features of muscle wasting in men with CKD.

Changes in peritoneal membrane permeability and proteinuria in patients on peritoneal dialysis after treatment with paricalcitol − a preliminary study.

Background: Patients on peritoneal dialysis (PD) have protein loss through peritoneal membrane (PM) and experience changes in permeability of the membrane. Paricalcitol is a selective vitamin D receptor activator with an effect upon systemic inflammation and an inhibitory effect upon the renin-angiotensin-aldosterone system (RAAS).

Methods: This study explores the possible effect of paricalcitol upon the PM in 23 patients on PD with high iPTH levels.

Effects of oral paricalcitol on hyperparathyroidism and proteinuria in peritoneal dialysis patients.

Severe secondary hyperparathyroidism is a complication of chronic kidney disease. Paricalcitol is a vitamin D receptor activator with efficacy in the treatment of hyperparathyroidism that also has the minor side effects of hypercalcemia and hyperphosphatemia. As a pleiotropic effect, paricalcitol reduces proteinuria in patients with chronic kidney disease stages 2-4.

[Morbidity and mortality in diabetic patients on peritoneal dialysis. Twenty-five years of experience at a single centre].

Aims: To describe PD outcomes over 25 years in a single centre, comparing hospitalisation rate, technique withdrawal, and survival between diabetic (DM) and non-diabetic (NonDM) patients. Differences between type 1 (DM1) and type 2 (DM2) diabetics were also analysed.

Patients And Methods: One hundred and eighteen DM patients (52 year old average, 74 men, 44 female) and 117 Non-DM (53 year old average, 64 men, 53 female), with at least 2 months on PD, 25±20 (2-109) and 29.

Fertility in Holstein x Gyr cows in a subtropical environment after insemination with Gyr sex-sorted semen.

Breeding records, including 649 inseminations during fall and winter at a dairy farm in a subtropical area of Western Mexico (24 masculine N; 24 degrees C, mean annual temperature 24 degrees C) were analyzed to document effects of sex-sorted semen from commercial Gyr bullls, estrus synchronization protocol, inseminator, sire and environmental conditions on fertility of crossbred cows (Holstein x Gyr). Percentage of services resulting in pregnancies decreased sharply when sex-sorted semen was used (22.7 vs.

Peritoneal protein losses in diabetic patients starting peritoneal dialysis: is there a relationship with diabetic vascular lesions?

During peritoneal dialysis (PD), a significant amount of protein is lost through the peritoneal membrane, and these losses could influence the patient's nutrition status. It has been reported that peritoneal protein loss (PPL) is greater in diabetic (D) patients than in nondiabetic (ND) patients, but the topic is still controversial, and the factors involved are not totally defined. We studied 23 patients on continuous ambulatory PD (12 with diabetes) who had experienced no episodes of infection during the preceding months.

[Patients on peritoneal dialysis with type 2 diabetes present poorer progress than non-diabetics at the expense of their cardiovascular comorbidity].

Aim: To describe the characteristics, practice patterns, targets and outcome of the Type 2 diabetic patients (DM 2) in peritoneal dialysis (PD) and to compare them with non-diabetic ones.

Methods: Prospective cohort study of every incident PD patient in a regional public health care system (2003-2006). We prospectively collected baseline data, hospital admissions, peritonitis, transplants, CV events and deaths.

Early initiation of peritoneal dialysis in diabetic patients.

Objective: Starting dialysis earlier in diabetic patients than in other patients with chronic kidney disease slows the progression of some diabetic complications, and could affect the survival outcome. The aim of this study is to assess the effect of starting dialysis early in diabetic patients on survival and hospitalization outcome.

Material And Methods: One-hundred diabetic patients on peritoneal dialysis (PD), 54 with type 1 and 46 with type 2 diabetes, were reviewed.

[Factors related to loss of residual renal function in peritoneal dialysis].

Residual renal function (RRF) contributes to the quality of life of patients on dialysis through the better solutes clearances, fluid removal, less degree of anemia, better calcium-phosphorus control, better nutrition and removal of other uremic toxins. The preservation of RRF is associated with higher patient survival in peritoneal dialysis (PD), and is now accepted that RRF and peritoneal clearance are not of equal value in patient survival. This review studies the factors that contribute to the reduction or loss of RRF in PD patients and the medical measures to avoid it.