Janneth Gonzalez

Janneth Gonzalez
Pontificia Universidad Javeriana · Department of Nutrition and Biochemistry

Associate Professor Pontificia Universidad Javeriana

About

95
Publications
25,048
Reads
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1,935
Citations
Citations since 2016
47 Research Items
1591 Citations
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2016201720182019202020212022050100150200250
2016201720182019202020212022050100150200250
2016201720182019202020212022050100150200250
Introduction
I am keen interested in the interactions between neurons and glial cells in relation to intermediary metabolism, antioxidant support, and protection in normal and pathological conditions. Also, I am are particularly interested in assessing possible ligands-proteins interactions using computational biology tools to predict possible signaling transduction and/or biological functions.
Skills and Expertise
Additional affiliations
January 2000 - present
Pontificia Universidad Javeriana - Bogotá
Description
  • We are a group that focuses on developing/applying computational techniques to solve fundamental problems in structural and functional biology.
Education
January 2008
Pontificia Universidad Javeriana
Field of study
  • Biological Sciences. Emphasis on Computational Biochemistry and Bioinformatics
February 2003
Pontificia Universidad Javeriana
Field of study
  • Biological Sciences. Emphasis on Computational Biochemistry and Bioinformatics

Publications

Publications (95)
Article
Full-text available
The importance of miRNAs in cellular processes and their dysregulation has taken significant importance in understanding different pathologies. Due to the constant increase in the prevalence of neurodegenerative diseases (ND) worldwide and their economic impact, mild cognitive impairment (MCI), considered a prodromal phase, is a logical starting p...
Article
Full-text available
Neurodegenerative diseases (NDD) have been of great interest to scientists for a long time due to their multifactorial character. Among these pathologies, Alzheimer's disease (AD) is of special relevance, and despite the existence of approved drugs for its treatment, there is still no efficient pharmacological therapy to stop, slow, or repair neuro...
Article
Full-text available
The coronavirus disease 2019 pandemic accelerated drug/vaccine development processes, integrating scientists all over the globe to create therapeutic alternatives against this virus. In this work, we have collected information regarding proteins from SARS-CoV-2 and humans and how these proteins interact. We have also collected information from publ...
Article
Background Traumatic Brain Injury (TBI) has long-term devastating effects for which there is no accurate and effective treatment for inflammation and chronic oxidative stress. As a disease that affects multiple signalling pathways, the search for a drug with a broader spectrum of pharmacological action is of clinical interest. The fact that endocri...
Article
Full-text available
Excessive accumulation and release of fatty acids (FAs) in adipose and non-adipose tissue are characteristic of obesity and are associated with the leading causes of death worldwide. Chronic exposure to high concentrations of FAs such as palmitic acid (pal) is a risk factor for developing different neurodegenerative diseases (NDs) through several m...
Article
Full-text available
Astrocytes play an important role in various processes in the brain, including pathological conditions such as neurodegenerative diseases. Recent studies have shown that the increase in saturated fatty acids such as palmitic acid (PA) triggers pro-inflammatory pathways in the brain. The use of synthetic neurosteroids such as tibolone has demonstrat...
Chapter
Full-text available
Astrocytes are critical for the metabolic, structural and functional modulatory support of the brain. Lipotoxicity or high levels of saturated fatty acid as Palmitate (PA) has been associated with neurotoxicity, the loss or change of astrocytic functionality, and the etiology and progression of neurodegenerative diseases such as Parkinson or Alzhei...
Article
Full-text available
One of the most common lipids in the human body is palmitic acid (PA), a saturated fatty acid with essential functions in brain cells. PA is used by cells as an energy source, besides being a precursor of signaling molecules and protein tilting across the membrane. Although PA plays physiological functions in the brain, its excessive accumulation l...
Article
Full-text available
Lipotoxicity is a metabolic condition resulting from the accumulation of free fatty acids in non-adipose tissues which involves a series of pathological responses triggered after chronic exposure to high levels of fatty acids, severely detrimental to cellular homeostasis and viability. In brain, lipotoxicity affects both neurons and other cell type...
Chapter
With the advent of novel computational methods, it has been possible to improve the identification of new therapeutic alternatives as well as novel biomarkers for early cancer diagnosis. Considering the abundance of genomics data for cancer patients it is possible to extract genomic profiles and generate associations with rigorous clinical data. No...
Article
Full-text available
Neurodegenerative diseases (NDs) are characterized by progressive neuronal dysfunction and death of brain cells population. As the early manifestations of NDs are similar, their symptoms are difficult to distinguish, making the timely detection and discrimination of each neurodegenerative disorder a priority. Several investigations have revealed th...
Article
Full-text available
During the building of a genome-scale metabolic model, there are several dead-end metabolites and substrates which cannot be imported, produced nor used by any reaction incorporated in the network. The presence of these dead-end metabolites can block out the net flux of the objective function when it is evaluated through Flux Balance Analysis (FBA)...
Article
Full-text available
Metachromatic leukodystrophy (MLD) is a human neurodegenerative disorder characterized by progressive damage on the myelin band in the nervous system. MLD is caused by the impaired function of the lysosomal enzyme Arylsulphatase A (ARSA). The physiopathology mechanisms and the biochemical consequences in the brain of ARSA deficiency are not entirel...
Article
Statins are the low-density lipoproteins (LDL)-cholesterol-lowering drugs of first choice and are used to prevent the increased risk of cardiovascular and cerebrovascular diseases. Although some of their effects are well known, little is known about their ability to regulate other lipid-related proteins which control apoptotic mechanisms. The aim o...
Article
Background Breast cancer is currently among the most common cause of mortality in women. Estrogen and its subsequent signaling pathways play an important role in the occurrence of breast cancer relapse. Tamoxifen is the most common breast cancer treatment option in ER+ patients, which acts as an adjuvant endocrinotherapy with X-ray and surgery. Thi...
Article
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The growing importance of astrocytes in the field of neuroscience has led to a greater number of computational models devoted to the study of astrocytic functions and their metabolic interactions with neurons. The modeling of these interactions demands a combined understanding of brain physiology and the development of computational frameworks base...
Article
Lipotoxicity is a pathological condition resulting from the excessive accumulation of fatty acids, like palmitic acid (PA), within the cell. This pathological phenomenon induces deleterious metabolic changes in cells and is associated with neurodegenerative diseases, dyslipidemia, and obesity. Recent evidence has demonstrated that tibolone, a synth...
Article
Full-text available
As the mechanism of interaction between nicotinic receptors with nicotine analogs is not yet fully understood, information at molecular level obtained from computational calculations is needed. In this sense, this work is a computational study of eight nicotine analogs, all with pyrrolidine ring modifications over a nicotine-based backbone optimize...
Article
Full-text available
Background A key short-fall with animal-borne bio-logging instruments, which collect digital time-series data regarding the foraging behaviours of cryptic marine mammal species, is validating those data against in situ behaviours. Objective To collate direct observations of elephant seal feeding behaviour to help interpret foraging behaviours infe...
Article
Full-text available
Inflammation is a complex biological response to injuries, metabolic disorders or infections. In the brain, astrocytes play an important role in the inflammatory processes during neurodegenerative diseases. Recent studies have shown that the increase of free saturated fatty acids such as palmitic acid produces a metabolic inflammatory response in a...
Preprint
Full-text available
Dopaminergic replacement has been used for Parkinson’s Disease (PD) treatment with positive effects on motor symptomatology but with low effects over disease progression and prevention. Different epidemiological studies have shown that nicotine consumption decreases PD prevalence through the activation of neuroprotective mechanisms. Nicotine-induce...
Article
Full-text available
Astrocytes are specialized cells capable of regulating inflammatory responses in neurodegenerative diseases or traumatic brain injury. In addition to playing an important role in neuroinflammation, these cells regulate essential functions for the preservation of brain tissue. Therefore, the search for therapeutic alternatives to preserve these cell...
Article
Full-text available
Parkinson’s disease (PD) is a neurodegenerative pathology characterized by resting tremor, rigidity, bradykinesia, and loss of dopamine-producing neurons in the pars compacta of the substantia nigra in the central nervous system (CNS) that result in dopamine depletion in the striatum. Oxidative stress has been documented as a key pathological mecha...
Article
Traumatic brain injury (TBI) is a serious public health problem. It may result in severe neurological disabilities and in a variety of cellular metabolic alterations for which available therapeutic strategies are limited. In the last decade, the use of estrogenic compounds, which activate protective mechanisms in astrocytes, has been explored as a...
Article
Full-text available
Platelet-derived growth factor, subtype BB (PDGF-BB) is a mitogenic growth factor produced in different cell types such as platelets, fibroblasts, neurons, and astrocytes. Previous reports have shown that different PDGF isoforms exert a neuroprotective effect in neurons and astrocytes against multiple degenerative insults. Previously, we showed tha...
Article
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Obesity is considered one of the greatest risk to human health and is associated with several factors including genetic components, diet, and physical inactivity. Recently, the relationship between obesity and numerous progressive and aging-related neurodegenerative diseases such as Parkinson's disease (PD) and Alzheimer's disease (AD) have been ob...
Article
Full-text available
Voltage-gated calcium channels are key regulators of brain function, and their dysfunction has been associated with multiple conditions and neurodegenerative diseases because they couple membrane depolarization to the influx of calcium—and other processes such as gene expression—in excitable cells. L-type calcium channels, one of the three major cl...
Article
Full-text available
A genome-scale metabolic reconstruction is a compilation of all stoichiometric reactions that can describe the entire cellular metabolism of an organism, and they have become an indispensable tool for our understanding of biological phenomena, covering fields that range from systems biology to bioengineering. Interrogation of metabolic reconstructi...
Article
Full-text available
Astrocytes are important glial cells involved in the ionic regulation of the extracellular fluid in the Central Nervous System (CNS), the formation of the blood brain barrier (BBB) and the support to neurons for the maintaining of the Krebs cycle intermediaries. Even though these cells are known to be important for the brain functioning, several of...
Conference Paper
Background: The nervous system is responsible for the communication between the organism and its environment. This task is possible by the presence of the myelin sheath, which is a double membrane formed by about 75% lipids and 25% proteins. The sulfatide represents one of the main lipids of the myelin band; its degradation is catabolized by the en...
Article
Full-text available
Astrocytes are the most abundant cells of the central nervous system; they have a predominant role in maintaining brain metabolism. In this sense, abnormal metabolic states have been found in different neuropathological diseases. Determination of metabolic states of astrocytes is difficult to model using current experimental approaches given the hi...
Article
Full-text available
Gliomas are central nervous system tumors originated from glial cells, whose incidence and mortality is expected to rise in coming years, especially in developing countries. Diagnosis and classification of gliomas have largely relied on tumor histopathologic features that provide limited information regarding response to therapy or prognosis. Curre...
Code
Full-text available
For a given metabolic model with well formed Gene-Protein-Reaction (GPR) associations and an expressionSet with their associated gene expression values, this package converts gene expression values to the FBA boundaries for each reaction based in the boolean rules described in its associated GPR.
Code
Full-text available
For a given metabolic network, this package finds the gaps (metabolites not produced or not consumed in any other reaction), and fills it from the stoichiometric reactions of a reference metabolic reconstruction using a weighting function. Also the option to download all the set of gene-associated stoichiometric reactions for a specific organism fr...
Article
Tibolone, a synthetic steroid used for the prevention of osteoporosis and the treatment of climacteric symptoms in post-menopausal women, may exert tissue selective estrogenic actions acting on estrogen receptors (ERs). We previously showed that tibolone protects human T98G astroglial cells against glucose deprivation (GD). In this study we have ex...
Article
Full-text available
Astrocytes are important for normal brain functioning. Astrocytes are metabolic regulators of the brain that exert many functions such as the preservation of blood–brain barrier (BBB) function, clearance of toxic substances, and generation of antioxidant molecules and growth factors. These functions are fundamental to sustain the function and survi...
Article
Full-text available
Parkinson’s disease (PD) is a relatively common disorder of the Central Nervous System (CNS), whose etiology is characterized by a selective and progressive degeneration of dopaminergic neurons, and the presence of Lewy bodies in the pars compacta of the substantia nigra, and gaping dopamine depletion in the striatum. Patients with this disease suf...
Article
Full-text available
Abstract: Glycation of proteins is a nonenzymatic process in which proteins react with reducing sugar molecules. This process takes place at ε-amino (ε-NH+) groups of lysine or hydroxylysine residues as well as α-amino groups of N-terminal residues. In the present study glycation of ε-NH+ groups of lysines was computationally analyzed for 26 protei...
Chapter
In recent years, there has been a growing interest in the improving effects of natural antioxidant compounds in dementia-associated diseases, including Alzheimer's disease, Parkinson's, and others. In this chapter, we highlight the most important natural antioxidants used in dementia. Main attention is given to polyphenol compounds such as resverat...
Article
Astrocytes exert multiple functions in the brain such as the development of blood-brain barrier characteristics, the promotion of neurovascular coupling, attraction of cells through the release of chemokines, clearance of toxic substances and generation of antioxidant molecules and growth factors. In this aspect, astrocytes secrete several growth f...
Article
Full-text available
Microglial cells are extremely important for homeostasis of the CNS. Upon brain damage, microglia become reactive in response to inflammatory stimuli and lead to the secretion of inflammatory cytokines. Because microglia have the ability of adjusting their steady state to an active phenotype that modulates the CNS environment, chronic activation of...
Article
Full-text available
Microglial cells are extremely important for the homeostasis of CNS. Upon brain damage, microglia become reactive in response to an inflammatory stimulus, and lead to the activation of several mechanisms that most likely ultimately lead to the secretion of inflammatory cytokines. Chronic activation of microglia has an important role in mediating ne...
Article
Green tea is a beverage consumed around the world that is believed to have substantial health benefits by reducing the risk of cancer, cardiovascular diseases, diabetes and neurodegeneration. This beverage is obtained from the leaves (steamed and dried) of the Camellia sinesis plant and may act as a strong antioxidant and neuroprotective agent thro...
Article
Mucopolysaccharidosis (MPS) is a group of lysosomal storage diseases (LSD), characterized by the deficiency of a lysosomal enzyme responsible for the degradation of glycosaminoglycans (GAG). This deficiency leads to the lysosomal accumulation of partially degraded GAG. Nevertheless, deficiency of a single lysosomal enzyme has been associated with i...
Conference Paper
Cells, tissues, organs and organisms can be understood as a large number of interconnected networks of biochemical pathways, genes, transcripts and proteins which give rise to emergent and specific functions and behaviors in a complex biological system. The complexity exhibited by these systems imposes considerable challenges to understand how they...
Conference Paper
Computational brain models focused on the interactions between neurons and astrocytes, modeled via metabolic reconstructions, are reviewed. The large source of experimental data provided by the -omics techniques and the advance/application of computational and data-management tools are being fundamental. For instance, in the understanding of the cr...
Article
Parkinson´s disease (PD) is a high prevalent progressive neurodegenerative disorder characterized by degeneration of dopaminergic neurons and intracytoplasmatic aggregation of α-synuclein called Lewy Bodies. Anomalies in the proteasomal and endosomal ubiquitin related degradation of α-synuclein have been related with PD. Among the different protein...
Article
Full-text available
Platelet-derived growth factor receptor alpha (PDGFRalpha) interacts with PDGFs A, B, C and AB, while PDGFRbeta binds to PDGFs B and D, thus suggesting that PDGFRalpha is more promiscuous than PDGFRbeta. The structural analysis of PDGFRalpha-PDGFA and PDGFRalpha-PDGFB complexes, and a molecular explanation for the promiscuity of PDGFRalpha and the...
Article
Objective: This study was carried out in order to examine the impact of long-term consumption of caramel-containing soft drinks (cola beverages) on glycemic balance and endocrine pancreas function and morphology in rats. Design and method: Sixty-four Wistar rats drank water (W), regular cola beverage (C, sucrose sweetened) for 6 months (treatment)....
Article
Full-text available
Astrocytes exert multiple functions in the brain such as the development of blood–brain barrier characteristics, the promotion of neurovascular coupling, attraction of cells through the release of chemokines, clearance of toxic substances and generation of antioxidant molecules and growth factors. In this aspect, astrocytes secrete several growth f...
Chapter
Perinatal asphyxia is an obstetric complication that can induce serious complications in the central nervous system. Between 15% and 20% of newborns die immediately after birth and 25% survive with varied neurological deficits such as cerebral palsy, mental retardation and developmental delay. Although different treatments have been used, thus far...