Publications by authors named "Osvaldo D Castelan-Martinez"

Sepsis and septic shock are major complications of febrile neutropenia (FN) in pediatric patients with cancer (PPCs). The aim of the present study was to determine the association of vitamin D (VD) and cathelicidin levels with sepsis and septic shock in PPCs with FN. A prospective cohort of PPCs with FN who had previously received cytotoxic chemotherapy was analyzed.

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Objectives: Underreporting of adverse drug reactions (ADRs) limits and delays the detection of signs. The aim of this systematic review with meta-analyses was to synthesize the evidence of educational interventions (EIs) efficacy in health professionals to increase ADR reporting, attitudes, and knowledge of pharmacovigilance.

Evidence Acquisition: A systematic literature review was carried out to identify randomized clinical trials evaluating the efficacy of EI in pharmacovigilance in health professionals to improve ADR reports, knowledge, and attitude toward pharmacovigilance.

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Background: Due to many antineoplastic drugs' toxicity and narrow therapeutic window, medication errors are a health concern in pediatric oncology patients. This study aimed to identify and classify medication errors in a pediatric inpatient chemotherapy facility and evaluate the outcomes of these medication errors.

Methods: We conducted an observational retrospective study over 5 months in a chemotherapy facility for pediatric patients.

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Introduction: Midazolam is a benzodiazepine used for sedation, however, can cause respiratory depression and increases morbidity in patients. Melatonin is an effective alternative to manage anxiety in the perioperative period and could help to reduce the use of benzodiazepines during surgery. The aim of this clinical trial was to determine the efficacy of pre-operative sedation with a single-dose melatonin to reduce intraoperative use of midazolam in women under total abdominal hysterectomy (TAH).

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Background: This study aimed to synthesize the evidence of the effect of practicing Tai Chi on oxidative stress markers (OxSM).

Methods: This systematic review and meta-analysis was conducting using the MEDLINE, Cochrane Library, ScienceDirect, Scopus, Epistemonikos, Lilacs, and Ovid databases to identify randomized (RCT) and non-randomized (NRCT) clinical trials that evaluated the Tai Chi effect on OxSM compared to sedentary behavior, walking or yoga. Pooled mean differences (MDs) with 95% confidence intervals (95%CI) were estimated using the inverse variance method to determine the effect of Tai Chi on OxSM.

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Low bone mineral density (BMD) on postmenopausal women causes bone fragility and fracture risk. Tibolone seems to prevent bone loss. Therefore, this systematic review with meta-analysis synthesizes the tibolone effect on BMD percent change in lumbar spine (LS), femoral neck (FN), and total hip (TH) in postmenopausal women.

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Purpose: Hypomagnesemia has been associated with febrile neutropenia (FN) in pediatric patients receiving cisplatin-based chemotherapy (CDDPBC). The primary aim was to determine whether oral magnesium supplementation reduces FN episodes in pediatric patients with solid tumors treated with CDDPBC.

Method: This randomized clinical trial, with open-label, single-center, parallel group and superiority design was conducted in Hospital Infantil de Mexico Federico Gomez at Mexico City.

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Introduction: Cardiotoxicity is an adverse reaction associated with the use of anthracyclines.

Objective: To estimate the factors associated with the development of anthracycline cardiotoxicity in pediatric patients surviving cancer.

Method: Retro-prolective cohort of children diagnosed with cancer and treated with anthracyclines.

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Recently, studies have shown significant association between the rs2000999 polymorphism in the haptoglobin-encoding gene (HP) and low-density lipoprotein cholesterol (LDL-C) and total cholesterol (TC) levels, which are important risk factors for cardiovascular diseases. However, the association of rs2000999 with serum lipids in Latin American diabetic populations is still uncharacterized. Here, we analyzed the association of rs2000999 with TC, high-density lipoprotein cholesterol (HDL-C), and LDL-C levels in 546 Mexican adults with type 2 diabetes (T2D) and in 654 controls without T2D.

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Background: People with febrile neutropaenia are usually treated in a hospital setting. Recently, treatment with oral antibiotics has been proven to be as effective as intravenous therapy. However, the efficacy and safety of outpatient treatment have not been fully evaluated.

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Aim: To determine the association between the rs1256031 polymorphism and risk of developing type 2 diabetes.

Materials And Methods: Cases and controls study. 597 individuals with type 2 diabetes and 605 without it participated.

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Acute lymphoblastic leukemia (ALL) has been suggested as a long-term complication in patients with β-thalassemia major (β-TM). A 12-months-old male patient was diagnosed with β-TM. The patient required a blood transfusion weekly for 2 years.

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Background: Anthracyclines are effective drugs in pediatrics cancer treatment. However, anthracycline-induced cardiotoxicity (AIC) is a serious adverse drug reaction that affects the survival in patients treated for childhood cancer.

Clinical Cases: Case 1: Nine-year-old girl with stage IV Hodgkin lymphoma with 12 epirubicin doses and a cumulative dose of 576 mg/m2.

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Article Synopsis
  • Febrile neutropenia (FN) is a serious side effect of cisplatin-based chemotherapy (CDDPBC) in kids with solid tumors, with an incidence rate of 62.5%.
  • The study aimed to identify the frequency and specific risk factors for FN in pediatric patients, tracking them for up to 6 months after treatment.
  • Key independent risk factors include chemotherapy with anthracyclines, having low magnesium levels (hypomagnesaemia), and undergoing radiotherapy.
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Background: Community-acquired pneumonia is an important cause of mortality and morbidity worldwide. Therefore, our aim was to assess the efficacy and safety of outpatient treatment of community-acquired pneumonia.

Methods: We systematically reviewed randomized clinical trials evaluating efficacy and safety of outpatient treatment (OPT) compared with inpatient treatment (IPT) of community-acquired pneumonia in patients without added co-morbidity.

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Cisplatin, a major antineoplastic drug used in the treatment of solid tumors, is a known nephrotoxin. This retrospective cohort study evaluated the prevalence and severity of cisplatin nephrotoxicity in 54 children and its impact on height and weight.We recorded the weight, height, serum creatinine, and electrolytes in each cisplatin cycle and after 12 months of treatment.

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Aim: To analyze the association between Apa1 VDR polymorphism and osteoporosis in Mexican mestizo postmenopausal women.

Methods: A cross-sectional study was conducted in 534 postmenopausal mestizo women from Mexico City to determine the association of the Apa1 Vitamin D Receptor gene polymorphism (rs7975232) with osteoporosis and osteoporosis plus fracture. Bone mineral density (BMD) was assessed using dual-energy X-ray absorptiometry.

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Bladder agenesis is an extremely rare entity. A 12-year-old female patient presented with urinary incontinence, recurrent urinary tract infections, visible vaginal introitus and urethra, and two holes at the vulvar vestibule. An investigation revealed bladder agenesis.

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Background: Hypospadias is one of the most common congenital malformations. Few studies have explored the association of age at time of surgery and the occurrence of complications after hypospadias repair.

Objective: Determine whether age at hypospadias repair is a risk factor for development of complications.

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Systematic reviews (SR) are studies made in order to ask clinical questions based on original articles. Meta-analysis (MTA) is the mathematical analysis of SR. These analyses are divided in two groups, those which evaluate the measured results of quantitative variables (for example, the body mass index -BMI-) and those which evaluate qualitative variables (for example, if a patient is alive or dead, or if he is healing or not).

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Objective: Cisplatin is widely used to treat a variety of pediatric solid tumors. One of the most severe and debilitating adverse drug reactions experienced by patients who receive cisplatin therapy is permanent bilateral hearing loss. The aim of this study was to evaluate the incidence and risk factors for cisplatin-induced hearing loss in Mexican pediatric patients.

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When you want to show if there is a statistical association or differences between categorical variables, it is recommended to use the χ(2) test. This nonparametric test is one of the most used in clinical research; it contrasts nominal or ordinal qualitative variables that are observed in clinical practice. This test calculates the p value that determines whether differences between groups are real or due to chance.

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Allele frequency differences of functional CYP2C9 polymorphisms are responsible for some of the variation in drug response observed in human populations. The most relevant CYP2C9 functional variants are CYP2C9*2 (rs1799853) and CYP2C9 3 (rs1057910). These polymorphisms show variation in allele frequencies among different population groups.

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