Articles Related to Receptor

Fish are a commonly available type of vertebrate that rely on both congenital and acquired immunity to protect against pathogens. Congenital immunity acts as their first line of defense, while acquired immunity is crucial in defending against specific pathogenic infections. Toll-like receptor (TLR) genes play a significant role in their innate immunity and are essential to their immune system. To better understand the evolutionary status of TLRs in fish and their adaptive immune defense characteristics, researchers analyzed ten fish species' TLR7 and TLR13 gene sequences using the NCBI and Ensembl databases

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Covid-19 caused by the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), which hit the world in December 2019 is one of the worst medical emergencies people have ever encountered. Human angiotensin I converting enzyme 2 (ACE2) is the entry path of this virus to the host that regulates the renin-angiotensin-aldosterone system (RAAS). Hypothesis: Susceptibility to SARS-CoV-2 infection may be affected by ACE rs4646994 and ACE2 rs2285666 polymorphisms.

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Introduction: Obesity is a multifactorial condition influenced by environment and genetic factors. Controlling appetite and satiety involves complex interactions between the hypothalamus, which is responsible for homeostasis regulation energy, and hormones that regulate appetite including leptin and ghrelin. Leptin plays an important role in the regulation of food intake and energy expenditure, generating an increase in energy burning and decreasing food intake. And ghrelin is directly involved in the regulation of short-term energy balance. Objectives: To verify frequency, biochemical profile and Body Mass Index (BMI) variations according to SNPs in LEPR and GHRL gene. Subjects and Methods: 163 both genders subjects were classified into Study Group (SG): 103 subjects with obesity; Control Group (CG): 60 non-obese. Blood samples were collected to perform DNA extraction and biochemical profile analysis. Statistical significance was established at p < 0.05. Results: The genotype and allele frequency were similar between groups for both polymorphisms. The _/A genotype of the GHRL rs696217 polymorphism was associated to increased BMI in SG compared CG (p = 0.003) and increased triglycerides (TG) and very low density lipoprotein (VLDLc) values in CG (p < 0, 05). The _/A genotype was also associated with increased fasting glucose compared to CC genotype only in CG (p = 0.031). Considering the LEPR rs1137101 polymorphism, AA genotype subjects presented higher BMI compared to _/G genotype subjects (p = 0.024). No difference between biochemical profile variables related to LEPR rs1137101 polymorphism was found. Conclusion: AA genotypes of the LEPR rs1137101 polymorphism and _/A of the GHRL rs696217 polymorphism suggest being risk factors for BMI and the latter is associated with fasting glucose, VLDLc and TG variation.

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Breast cancer ranks first among the most commonly diagnosed cancers in Kenyan females and globally. Treatment is challenging because it is a heterogeneous disease with several subtypes. There has been a significant change in the treatment of Human Epidermal Growth Factor Receptor 2 (HER2) positive breast cancer subtypes following the introduction and widespread use of HER2 targeted therapies.

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Gonad removal has been implicated as a risk factor for the development of canine hemangiosarcoma. With gonad removal, there is a loss of negative feedback to the anterior pituitary, resulting in persistently elevated concentrations of luteinizing hormone (LH). LH receptors can be found in gonadal and extragonadal tissues, including the bladder and skin. The aim of this study was to investigate if LH receptors were expressed in canine splenic hemangiosarcoma. Splenic tumor samples submitted to the Oregon State Veterinary Diagnostic Laboratory from referring veterinarians were with routine immunohistochemical methods. In addition, survival time following hemangiosarcoma diagnosis was obtained from the referring veterinarians. Five of the eight splenic hemangiosarcomas (62.5 %) were positive for LH receptor expression. LH receptor cellular localization in splenic hemangiosarcoma was cytoplasmic and granular, similar to the positive control canine skin sections (Figure 1C). There was no positive staining in the negative controls. LH receptor is expressed in a proportion of HSAs but further study need to be done to assess the significance of this finding.

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The de-extinction of the dinosaur is a dubious possibility but its consideration brings forth some issues that are at least worthy of scientific discussion. In this review, we discuss two distinct issues that have implications for a de-extinct species such as a dinosaur: the ability, or lack thereof, to safely sedate a rare and potentially fractious animal capable of harming the veterinary staff tasked with its care; and, disease risks associated with a species that has been extinct for millions of years. To identify potential sedatives, comparative pharmacology will be needed to uncover the links between receptor pharmacology and the desired clinical outcomes of activating established alpha-2 adrenergic, opioid, and benzodiazepine receptors. Specific to disease control, it will be necessary to understand the unique susceptibility of the new species to current diseases as well as predicting their reservoir capacity for potential human and veterinary pandemic diseases. While the topics presented herein are not exhaustive, this review highlights some of the foremost research that should be conducted in order to serve the unique veterinary needs of a de-extinct species using the dinosaur as a paradigm. Addressing these issues should be considered if an intact dinosaur genome becomes available, regardless of the feasibility of dinosaur resurrection.

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Breast cancer is caused by genetic abnormalities resulting in uncontrolled growth of breast cells, and is the most commonly diagnosed cancer amongst women. The clinical use of liposomal-based drugs to treat solid tumors such as breast cancer has been shown to improve the overall pharmacological properties of otherwise “unencapsulated” cytotoxic agents.

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Xeroderma Pigmentosum (XP) is a rare autosomal recessive disorder characterized by an extreme sensitivity to UV rays from sunlight, a high incidence of skin cancer and occasional neurological symptoms. XP, primarily defined as a DNA repair syndrome, has been found associated with defects in the Nucleotide Excision Repair (NER) pathway, and more recently by transcriptional deregulation. XP results from mutations in eight genes (XPA to XPG and XPV) coding for proteins involved in NER.

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Primary small cell lung cancer (SCLC) showing epidermal growth factor receptor (EGFR) mutation is extremely rare. Transformation into SCLC has been reported as an evolution of lung adenocarcinoma acquiring resistance to EGFR tyrosine kinase inhibitors (TKI) and is considered to be a rare resistance mechanism of EGFR-TKI therapy.

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Human epidermal growth factor receptor 2 (HER2) is responsible for the pathogenesis and poor outcomes of several types of cancers, including advanced gastric and gastroesophageal junction cancer. Molecular-targeted drugs on the other hand, such as trastuzumab, prolong overall survival and progression-free survival in HER2-positive gastric cancer. The purpose of the case report is to evaluate the impact of delivering trastuzumab in advanced gastric cancer with concomitant HER2 mutation and amplification.

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White adipose tissue (WAT) is an endocrine organ with crucial role in the development of obesity and related diseases. White adipocytes have less mitochondria than brown adipocytes; nevertheless, there is an increasing body of evidence showing that mitochondrial parameters play a relevant role in WAT physiology, such as proliferation, differentiation and triacylglycerol storage levels.

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There could be progressive changes in hemodynamic and autonomic parameters causing cardiovascular damage from lean to morbid obesity. We aim to study resting and reactivity of hemodynamic and autonomic parameters to physical and mental stress in lean, overweight and obese subjects of the Oman Family Study (OFS).

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Increased life style changes have led to global epidemic of obesity. The global prevalence of obesity protracts to increase, with devastating consequences for overall health. Thus by exploring novel beneficial properties of natural products and their scientific indications are the need of the hour and can bring about a whole new revolution in nutraceutical industries and health care sectors.

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Immunosenescence describes the decrease in immune function with advancing age, a phenomenon that is associated with changes in the B and T lymphocyte populations. CD8+ T cells display the most dramatic phenotypical and functional changes within the T cell compartment whereby the cohorts of effector and memory T cells expand while the total population and diversity of naive T cells both decline.

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Fish oils are the most common source of omega-3 polyunsaturated fatty acids (n-3 PUFAs), mainly eicosapentaenoic acid (EPA). It has been pointed out protective effects and beneficial effects of EPA on body weight reduction, heart health, blood lipid profile, cardiovascular diseases and other diseases. Based on its biological activities, EPA may be developed to a complementary and alternative medicine through further research. In this paper, the pharmacological effects of EPA were summarized by reviewing the recent related literatures.

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