Total Gestational Weight Gain Is Explained by Leptin and Body Fat, Regardless of Pre-Pregnancy Body Mass Index and Other Adipokines, in Mexican Adolescents.

Pre-pregnancy body mass index (pBMI) is a predictor of gestational weight gain (GWG). However, other factors, such as adipokines and inflammation markers, may also be associated with GWG. The aim of the study was to determine the association of leptin, adiponectin, irisin, and C-reactive protein, with GWG in adolescents. A longitudinal study was conducted from 2018 to 2023 in adolescents with a clinically healthy pregnancy. The assessments included sociodemographic and clinical data, pBMI, percent of body fat, serum concentrations of leptin, adiponectin, irisin, and high-sensitivity C-reactive protein (hsCRP), and total GWG adequacy. Cox regression models were performed, the outcome variables were inadequate and excessive GWG. In 198 participants, being overweight/obesity was marginally associated with a protective effect against inadequate GWG (HR = 0.44, 95%CI = 0.18-1.06), regardless of maternal characteristics and adipokines. Leptin (HR = 1.014, 95%CI = 1.008-1.021), and body fat percent (HR = 1.11, 95%CI = 1.05-1.17) were associated with a higher risk of excessive GWG, independent of other maternal variables such as pBMI, while adiponectin was associated with a lower risk. These findings suggest that, in Mexican adolescents, adipose tissue and its adipokines during pregnancy may play a more significant role in the final GWG than body weight.

The environment and kidney health: challenges and opportunities.

The accelerating environmental degradation as a result of modernisation and climate change is an urgent threat to human health. Environment change can impact kidney health in a variety of ways such as water scarcity, global heating and changing biodiversity. Ever increasing industrialization of health care has a large carbon footprint, with dialysis being a major contributor. There have been calls for all stakeholders to adopt a 'one health approach' and develop mitigation and adaptation strategies to combat this challenge. Because of its exquisite sensitivity to various elements of environment change, kidney health can be a risk marker and a therapeutic target for such interventions. In this narrative review, we discuss the various mechanisms through which environmental change is linked to kidney health and the ways that the global kidney health communities can respond to environmental change.

Factors Associated With the Quality of the Patient-Doctor Relationship: A Cross-Sectional Study of Ambulatory Mexican Patients With Rheumatic Diseases.

BACKGROUND: The patient-doctor relationship (PDR) is a complex phenomenon with strong cultural determinants, which impacts health-related outcomes and, accordingly, does have ethical implications. The study objective was to describe the PDR from medical encounters between 600 Mexican outpatients with rheumatic diseases and their attending rheumatologists, and to identify factors associated with a good PDR. METHODS: A cross-sectional study was performed. Patients completed the PDRQ-9 (Patient-Doctor Relationship Questionnaire, 9 items), the HAQ-DI (Health Assessment Questionnaire Disability Index), the Short-Form 36 items (SF-36), a pain-visual analog scale, and the Ideal Patient Autonomy Scale. Relevant sociodemographic, disease-related, and treatment-related variables were obtained. Patients assigned a PDRQ-9 score to each patient-doctor encounter. Regression analysis was used to identify factors associated with a good PDR, which was defined based on a cutoff point established using the borderline performance method. RESULTS: Patients were primarily middle-aged female subjects (86%), with substantial disease duration (median, 11.1 years), without disability (HAQ-DI within reference range, 55.3%), and with deteriorated quality of life (SF-36 out of reference range, 73.7%-78.6%). Among them, 36.5% had systemic lupus erythematosus and 31.8% had rheumatoid arthritis. There were 422 patients (70.3%) with a good PDR and 523 medical encounters (87.2%) involved certified rheumatologists.Patient paternalistic ideal of autonomy (odds ratio [OR], 3.029; 95% confidence interval [CI], 1.793-5.113), SF-36 score (OR, 1.014; 95% CI, 1.003-1.025), female sex (OR, 0.460; 95% CI, 0.233-0.010), and being certified rheumatologist (OR, 1.526; 95% CI, 1.059-2.200) were associated with a good PDR. CONCLUSIONS: Patient-related factors and the degree of experience of the attending physician impact the quality of the PDR, in Mexican outpatients with rheumatic diseases.

Decreased kidney function and agricultural work: a cross-sectional study in middle-aged adults from Tierra Blanca, Mexico.

BACKGROUND: We aimed to determine the prevalence of decreased kidney function in a potential chronic kidney disease (KD) of unknown aetiology hotspot in Mexico, assess its distribution across occupations and examine the associated risk factors. METHODS: A cross-sectional study collected sociodemographic, occupational, medical and biometric data from 616 men and women aged 20-60 years who were residents of three communities within the Tierra Blanca region in Mexico. Kidney function was assessed by standardized serum creatinine and estimated glomerular filtration rate (eGFR) and semi-quantitative albumin-to-creatinine ratio (ACR). To examine the distribution of decreased kidney function within the population, age- and sex-adjusted prevalence of low eGFR (≤60 mL/min/1.73 m2) was estimated for all participants and across occupations. Multivariable logistic regression was used to assess the association of occupation with having low eGFR. RESULTS: Of the 579 participants analysed (37 excluded due to missing data), the age- and sex-adjusted prevalence of low eGFR was 3.5%. Agriculture was the occupation associated with the highest adjusted prevalence of low eGFR (8.8%), with 1 in every 11 agricultural workers having low eGFR. Working in agriculture was independently associated with more than a 5-fold risk of having low eGFR [odds ratio 5.2 (95% confidence interval 1.1-24.3), P = 0.032], after adjustment for age, sex, diabetes, hypertension, body mass index, ACR and family history of KD. Additionally, a quarter of the population (25%) had either low eGFR or an ACR >30 mg/g, mostly due to albuminuria. CONCLUSIONS: Our work suggests that there is a high prevalence of decreased kidney function in Tierra Blanca, particularly amongst agricultural workers.

Concordance among patients and physicians about their ideal of autonomy impacts the patient-doctor relationship: A cross-sectional study of Mexican patients with rheumatic diseases.

INTRODUCTION: In patient-doctor interaction both parties play a role. Primary objective was to determine if the concordance among rheumatologists and their patients of their ideal of autonomy was associated with a better patient-doctor relationship. Secondary objective was to describe factors associated to a patient paternalistic ideal of autonomy (PPIA). MATERIALS AND METHODS: This cross-sectional study had 3 steps. Step-1 consisted in translation/cultural local adaption of Ideal Patient Autonomy Scale (IPAS), a 14-items Dutch questionnaire. Step-2 consisted of IPAS validity and reliability in 201 outpatients. Step-3 consisted of the application of IPAS and the patient-doctor relationship questionnaire (PDRQ) to 601 outpatients with a medical encounter, and of IPAS to the 21 attending rheumatologists. Each patient-physician encounter was classified into with/without concordance in the ideal of autonomy and PRDQ scores were compared (Man Whitney U test). Regression analysis was used for associations. RESULTS: Step-1 followed ISPOR task force recommendations. Patients from Step-2 and Step-3 were representative outpatients with rheumatic diseases. IPAS structure underwent a modification; the 14 items were redistributed into four subscales, further combined into PPIA vs. patient-centered autonomy ideal. IPAS was valid and reliable. There were 497 patients with a preferred ideal of autonomy, primarily (84.9%) PPIA. There were 363 patient-doctor encounters with concordance in the autonomy ideal and their PDRQ-9 scores were higher. Religious beliefs and higher PDRQ-9 item 8 score ("I feel pleased with my doctor´s treatment") were associated to a PPIA. CONCLUSIONS: Concordance of autonomy ideal among patients and their rheumatologists positively impacts on the patient-doctor relationship.

Mortality in Patients With Chronic Renal Disease Without Health Insurance in Mexico: Opportunities for a National Renal Health Policy.

INTRODUCTION: Despite a systematic increase in the coverage of patients with end-stage renal disease (ESRD) who have received dialytic therapies and transplantation over the past 2 decades, the Mexican health system currently still does not have a program to provide full coverage of ESRD. Our aim was to analyze mortality in patients with ESRD without health insurance. METHODS: This was a prospective cohort study of 850 patients with advanced chronic kidney disease (CKD). Risk factors associated with death were calculated using a Cox's proportional hazards model. We used the statistical package SPSS version 22.0 for data analysis. RESULTS: The mean age of patients was 44.8 ± 17.2 years old. At the time of hospital admission, 87.6% of the population did not have a social security program to cover the cost of renal replacement treatment, and 91.3% of families had an income below US$300 per month. During the 3 years of the study, 28.8% of the cohort patients were enrolled in 1 of Mexico's social security programs. The 3-year mortality rate was of 56.7% among patients without access to health insurance, in contrast to 38.2% of patients who had access to a social security program that provided access to renal replacement therapy (P < 0.001). Risk factor analysis revealed that not having health insurance increased mortality (risk ratio: 2.64, 95% confidence intervals: 1.84-3.79; P = 0.001). CONCLUSION: Mexico needs a coordinated National Kidney Health and Treatment Program. A program of this nature should provide the basis for an appropriate educational and intervention strategy for early detection, prevention, and treatment of patients with advanced chronic kidney disease.

Genetic and environmental risk factors for chronic kidney disease.

In order to change the current state of chronic kidney disease knowledge and therapeutics, a fundamental improvement in the understanding of genetic and environmental causes of chronic kidney disease is essential. This article first provides an overview of the existing knowledge gaps in our understanding of the genetic and environmental causes of chronic kidney disease, as well as their interactions. The second part of the article formulates goals that should be achieved in order to close these gaps, along with suggested timelines and stakeholders that are to be involved. A better understanding of genetic and environmental factors and their interactions that influence kidney function in healthy and diseased conditions can provide novel insights into renal physiology and pathophysiology and result in the identification of novel therapeutic or preventive targets to tackle the global public health care problem of chronic kidney disease.

Clinical, histological and molecular characteristics of Mexican patients with Fabry disease and significant renal involvement.

BACKGROUND AND AIMS: Fabry's disease (FD) is an X-linked lysosomal disorder caused by a deficiency of the enzyme α-galactosidase A that produces accumulation of glycosphingolipids with clinical abnormalities of skin, eye, kidney, heart, brain, and peripheral nervous system. We undertook this study to describe the molecular characteristics of the first four Mexican patients with diagnosis of FD with significant renal involvement, correlating these molecular characteristics with clinical, pathological and biochemical findings. METHODS: Genomic DNA from Mexican nonrelated patients with presumptive diagnosis of FD was sequenced by polymerase chain reaction (PCR). DNA sequences were compared against sequences in world data bank gene for alpha-galactosidase A (α-GLA, ENSG00000102393) using the BLAST database. RESULTS: Three patients were confirmed as having FD by displaying mutations in the α-GLA gene. The mutations found are a substitution (p.L243 F) in patient 1, and a substitution (p.A156 V) in patient 3. These two mutations had been previously reported. The new mutation was in patient 2 who displayed a deletion (c.260delA) changing the open reading frame from codon 86 and a stop codon at the 105th residue of the protein, (instead of 429 AA). The fourth patient had lack of mutations in any of the seven exons of α-GLA or 25 base-pair flanking regions; had mild manifestations with kidney histopathological diagnosis of FD that gave us a final diagnosis of atypical phenotype of FD. CONCLUSIONS: Although the sample is small, it gives a first idea of the molecular and clinical heterogeneity of FD in a Mexican population.

Longitudinal analysis of participants in the KEEP Mexico's chronic kidney disease screening program.

BACKGROUND AND AIMS: The Kidney Early Evaluation Program (KEEP) is a free screening and educational program aimed at detecting chronic kidney disease (CKD) among adult individuals who are at high-risk (those with diabetes, hypertension, or family history of these conditions or CKD). Confirmation of CKD diagnosis requires persistence of albuminuria or estimated GFR <60 mL/min for at least 3 months. We undertook this study to determine in a follow-up KEEP done at least 1 year after a baseline KEEP the following: 1) CKD incidence among individuals who initially tested negative for CKD, 2) transitions between CKD stages among individuals who initially tested positive for CKD. METHODS: A random sample of KEEP participants was invited to participate in a follow-up KEEP between 2008 and 2010. Paired analyses were conducted to compare CKD stages between baseline and follow-up KEEP. RESULTS: A total of 434 individuals with a mean age of 49 years and 77% females participated in the study. Overall CKD prevalence in the baseline KEEP was 24%, and most patients were unaware of the diagnosis. In the follow-up KEEP, CKD incidence was 14%. The percentage of patients who tested positive for CKD in the baseline KEEP and who remained positive regardless of stage in the follow-up KEEP was 40% for those with stage 1 at baseline, 52% for those with stage 2, 65% for those with stage 3, and 100% for those with stages 4 or 5. CONCLUSIONS: Screening for CKD among high-risk individuals is uncommon. KEEP is an effective program for detecting CKD.

Reaching targets for mineral metabolism clinical practice guidelines and its impact on outcomes among Mexican chronic dialysis patients.

BACKGROUND AND AIMS: An increasing number of studies have been published concerning meeting targets of clinical guidelines for different aspects of the diagnosis and treatment of patients with end-stage renal disease. Most of these studies have shown that guideline recommendations are not always satisfied, and results outside target limits have been associated with high rates of mortality and morbidity. The objective of this study was to analyze the frequency of reaching mineral and bone metabolism-related guideline targets and its impact on clinical outcomes in Mexican chronic dialysis patients. METHODS: A cohort of prevalent peritoneal dialysis (PD) and hemodialysis (HD) patients were analyzed at baseline and followed for at least 16 months. Patients were on continuous ambulatory peritoneal dialysis (CAPD), automated peritoneal dialysis (APD), and HD and contracted HD modalities where patients received HD sessions outside institution facilities. RESULTS: We studied 753 patients. The percentage of patients within target limits for phosphorus was 35%, for calcium 32%, and for PTH 12%. The most frequent pattern was hyperphosphatamia, hypercalcemia, and low PTH. This was even more frequent in CAPD patients, probably due to the high percentage of diabetic patients. Hypercalcemia was found as an independent risk factor for mortality. CONCLUSIONS: The most important results suggest that guideline recommendations are not usually satisfied and that hypercalcemia, in addition to other traditional risk factors, is associated with high mortality rates. The study also detected some opportunities to improve the quality of treatment by reducing the calcium content of dialysis solutions and reducing the use of calcium carbonate as a phosphate binder.

Effect of red cell transfusions on future kidney transplantation.

Red cell transfusions, erythropoiesis-stimulating agents (ESAs), and intravenous iron therapy all have a place in the treatment of anemia associated with CKD. Their relative merits and uses are subject to many clinical and nonclinical factors. New concerns associated with the use of ESA therapy make it likely that the use of blood transfusions will increase, refueling previous debates about their associated risks. Data on whether red cell transfusions increase sensitization to HLA antigens, rendering subsequent transplantation more problematic, are mainly derived from older literature. Older data suggested that women were more at risk of HLA sensitization than men, particularly those with previous multiple pregnancies, although recent U.S. Renal Data System data have challenged this. HLA sensitization prolongs the waiting time for transplantation and reduces graft survival. Leukocyte depletion of red cells does not appear to reduce the risk of HLA sensitization. This review summarizes much of the data on these issues, as well as highlighting the need for further research on the potential risks for blood transfusion in patients with CKD.

Establishing the Global Kidney Disease Prevention Network (KDPN): a position statement from the National Kidney Foundation.

The Global Kidney Disease Prevention Network is an international public health organization devoted to encouraging and enhancing efforts to increase awareness and recognition of kidney disease, detect it early, and provide treatment to prevent disease progression, improve patient outcomes, and decrease costs. Twenty-six participants from 12 low-, middle-, and high-income countries attended the first meeting, held in Geneva, Switzerland, on September 12-13, 2009. Work groups discussed target populations for chronic kidney disease (CKD) screening, optimal parameters for screening on a public health level, evaluating the impact of early screening programs, and use of screening data to inform health care policy. Of the screening programs discussed, most have targeted populations at high risk of CKD and have included medical history; weight, height, and blood pressure measurements; and blood and urine tests. In screenees, CKD prevalence ranged from 11%-33%. In screenees with CKD, few were aware of the disease, although substantial proportions had been seen by a physician in the previous 6-12 months. At the policy level, prevention of CKD implies prevention and control of risk-factor conditions, including diabetes, hypertension, and others. Given the high prevalence and under-recognition of CKD in different countries, a concerted effort to globally improve primary and secondary CKD prevention appears to be warranted.

Prevalence of chronic kidney disease in the Kidney Early Evaluation Program (KEEP) México and comparison with KEEP US.

The National Kidney Foundation Kidney Early Evaluation Program (KEEP) is a free community screening program aimed at early detection of kidney disease among high-risk individuals. A pilot phase of KEEP México began in 2008 in México City and Jalisco State. Adults with diabetes, hypertension, or family history of diabetes, hypertension, or chronic kidney disease (CKD) were invited to participate through advertising campaigns. All participants completed a questionnaire. Blood pressure, weight, and height were measured; blood and urine tests included albuminuria and serum creatinine to estimate glomerular filtration rate using the Modification of Diet in Renal Disease Study equation. Mean age of KEEP México City and KEEP Jalisco participants was 46 and 53 years, respectively; >70% were women. CKD prevalence was 22% in KEEP México City and 33% in KEEP Jalisco, not significantly different from reported KEEP US prevalence of 26%. CKD stages 1 and 2 were more frequent in KEEP México and stage 3 in KEEP US. In KEEP México City, CKD prevalence was higher than the overall prevalence among participants with diabetes (38%) or diabetes and hypertension (42%). Most KEEP México participants were unaware of the CKD diagnosis, despite that 71% in KEEP México City had seen a doctor in the previous year. CKD is highly prevalent, underdiagnosed, and underrecognized among high-risk individuals in México. KEEP is an effective screening program that can successfully be adapted for use in México.