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1.
Indian J Endocrinol Metab ; 28(3): 315-319, 2024.
Article in English | MEDLINE | ID: mdl-39086575

ABSTRACT

Introduction: Initial surge of thyroid-stimulating hormone (TSH) in neonates increases free and total triiodothyronine (T3) and tetraiodothyronine (T4) in 24-36 hours following birth, and the effect then gradually wanes off. As somatic and intellectual development is dependent on normal thyroid function especially in infancy, normative data in these children may be of immense value to diagnose hypothyroidism in this subset of infants. Comprehensive normative values of thyroid function parameters in preterm neonates are scarcely available. The objective of this study was to determine the normative value of thyroid function parameters in preterm neonates. Methods: Preterm neonates (n = 102) born at 34 and 35 weeks of gestation of euthyroid mothers from an iodine-sufficient population were evaluated for T3, T4, free thyroxine (FT4) and TSH during 3-7 days after birth and again after 1 month. The expected date of delivery (EDD) and Ballard score were used to identify the duration of gestation. Results: The mean gestational age was 34.7 ± 0.41 weeks. The mean (± SD) for T3 (ng/dl), T4 (µg/dl), FT4 (ng/ml) and TSH (µIU/ml) on days 3-7 following birth was as follows: 156 ± 44.6, 12.8 ± 3.7, 1.50 ± 0.54 and 7.13 ± 6.04, respectively. Around 4 weeks of age, values changed to 104 ± 38.4, 12.1 ± 4.02, 1.46 ± 0.42 and 3.25 ± 2.85, respectively. All parameters changed significantly around 4 weeks, except FT4. None of the parameters were correlated with gestational age or body weight at birth. Normative values for each parameter in percentiles were generated. Conclusion: This study generated the normative values of the thyroid function test during the first week and after around 4 weeks of life for premature neonates (born at 34-35 weeks).

2.
J Assoc Physicians India ; 72(8): e1-e25, 2024 Aug.
Article in English | MEDLINE | ID: mdl-39163066

ABSTRACT

In India and the Southeast Asian population, hypertension and type 2 diabetes mellitus (T2DM) are the leading lifestyle-related diseases, responsible for a majority burden of morbidity and mortality. Multiple population-spanning studies have revealed the staggering prevalence of both diseases in India, and the prevalence of both will only increase further due to factors such as an aging population, rapid urbanization, increased obesity, and sedentary lifestyles. More than 50 percent of hypertensive patients in India are also diagnosed with T2DM, and a detailed management protocol for the same is required, especially when a major portion of the disease is managed at the primary care level. The Association of Physicians of India (API) guidelines for the management of hypertension in patients with T2DM have been formulated based on consultation with leading physicians, cardiologists, diabetologists, and endocrinologists of India and Southeast Asia, keeping in mind the challenges faced by the patients in these countries and the appropriate management protocols that will be beneficial. While standard office-based blood pressure (BP) measurement forms the cornerstone of hypertension diagnosis and demands a uniform methodology to be followed, home blood pressure monitoring (HBPM) is recommended for long-term follow-up with validated devices. Ambulatory blood pressure monitoring (ABPM) offers comprehensive insights crucial for cardiovascular (CV) risk stratification. The complications of diabetic hypertension can span from increased CV risk, heart failure (HF), and renal dysfunction, and nonpharmacological and pharmacological management should be aimed toward not only control of the BP values but also protecting the end organs. While nonpharmacological measures include a focus on nutrition and diet, they also focus on approaches to weight loss, including a novel section covering the benefits of yoga. The guideline also focuses on a novel section of factors influencing CV risk, especially in the Indian population. For the pharmacological management, the guidelines address each of the categories of antihypertensive drugs, emphasizing the significance of combination therapies in the management of diabetic hypertension. In line with leading global guidelines for the management of hypertension in T2DM, for diabetic patients who often struggle with BP management and carry a high CV risk, the recommended dual combination antihypertensive therapy is particularly crucial and should be considered as first-line management therapy. While angiotensin-converting enzyme inhibitors (ACEi) or angiotensin receptor blockers (ARBs) play a highly beneficial role in the management of diabetic hypertension, a combination of ACEi or ARB with dihydropyridine calcium channel blockers (DHP-CCBs) is recommended to reduce the risk of complications and enhance patient adherence. To achieve the target of effective BP control and end-organ protection, it is beneficial and recommended to include newer CCBs (e.g., cilnidipine) in the management protocol in combination with ACEi/ARBs. Combination therapy including ARBs and DHP-CCBs should be preferred over ß-blockers and thiazides. Among the CCBs, cilnidipine, a novel molecule, is a more effective and safer option for diabetic hypertensive patients in India. ß-blockers should be used if there is a history of myocardial infarction (MI), HF, coronary artery disease (CAD), or stable angina along with the initial hypertensive regimen. The guideline also focuses on the novel reno- and cardioprotective molecules such as finerenone and sodium-glucose cotransporter 2 inhibitors (SGLT2i) and their benefits in the management of diabetic hypertension.


Subject(s)
Antihypertensive Agents , Diabetes Mellitus, Type 2 , Hypertension , Humans , Diabetes Mellitus, Type 2/complications , Diabetes Mellitus, Type 2/drug therapy , Hypertension/drug therapy , Hypertension/epidemiology , Hypertension/therapy , India/epidemiology , Antihypertensive Agents/therapeutic use , Blood Pressure Monitoring, Ambulatory/methods
3.
Microrna ; 2024 Jun 28.
Article in English | MEDLINE | ID: mdl-38952162

ABSTRACT

BACKGROUND: Publications reveal different outcomes achieved by genetically knocking out a long non-coding microRNA-host-gene (lncMIRHG) versus the administration of pharma-cologic antagomirs specifically targeting the guide strand of such intragenic microRNA. This suggests that lncMIRHGs may perform diverse functions unrelated to their role as intragenic miRNA precursors. OBJECTIVE: This review synthesizes in silico, in vitro, and in vivo findings from our lab and others to compare the effects of knocking out the long non-coding RNA MIR22HG, which hosts miR-22, versus administering pharmacological antagomirs targeting miR-22-3p. METHODS: In silico analyses at the gene, pathway, and network levels reveal both distinct and overlapping targets of hsa-miR-22-3p and its host gene, MIR22HG. While pharmacological an-tagomirs targeting miR-22-3p consistently improve various metabolic parameters in cell culture and animal models across multiple studies, genetic knockout of MIR22HG yields inconsistent results among different research groups. RESULTS: Additionally, MIR22HG functions as a circulating endogenous RNA (ceRNA) or "sponge" that simultaneously modulates multiple miRNA-mRNA interactions by competing for binding to several miRNAs. CONCLUSIONS: From a therapeutic viewpoint, genetic inactivation of a lncMIRHG and pharmaco-logic antagonism of the guide strand of its related intragenic miRNA produce different results. This should be expected as lncMIRHGs play dual roles, both as lncRNA and as a source for primary miRNA transcripts.

4.
World J Clin Cases ; 12(18): 3332-3339, 2024 Jun 26.
Article in English | MEDLINE | ID: mdl-38983439

ABSTRACT

BACKGROUND: Primary hyperaldosteronism (PH) is considered to contribute to increased risk of developing type 2 diabetes mellitus (T2DM) and prediabetes. Both PH and DM are associated with increased risk for hypertension, cardiovascular diseases, and chronic kidney diseases. However, data on prevalence of T2DM and prediabetes in PH, and impact of T2DM and prediabetes on presentation and cardio renal complications in PH at presentation is sparse. AIM: To determine the prevalence of T2DM and prediabetes in PH at diagnosis and impact on presentation and complications of PH. METHODS: A retrospective cohort study was conducted in tertiary care settings in individuals with confirmed diagnosis of PH at presentation. Demographic variables, clinical presentations, duration and degree of hypertension, complications, laboratory parameters including sodium, potassium levels, plasma aldosterone concentration (PAC), plasma renin activity (PRA), and aldosterone to renin ratio (ARR) and cardio-renal parameters were collected. Comparison was done between three groups: PH with no DM (Group A) or with pre-diabetes (Group B) or with T2DM (Group C). P < 0.05 was statistically significant. RESULTS: Among 78 individuals with confirmed PH, 62% had pre-diabetes or diabetes; with 37% having DM. Mean duration of T2DM was 5.97 ± 4.7 years. The mean levels of glycaemic parameters among the group A vs B vs C individuals were fasting plasma glucose (mg/dL): 87.9 ± 6.5, 105.4 ± 9.02, 130.6 ± 21.1; post prandial plasma glucose (mg/dL): 122.7 ± 9.8, 154.9 ± 14, 196.7 ± 38.0; glycated haemoglobin (%) (5.3 ± 0.2, 5.9 ± 0.2, 7.5 ± 0.6, P < 0.05), respectively. There was no significant difference in the biochemical parameters (PAC, PRA, ARR, sodium, potassium levels), presentation and complications between the groups. Cardio renal parameters or degree and duration of hypertension were comparable between the groups. CONCLUSION: Significant prevalence of T2DM and prediabetes in PH at diagnosis does not impact its presentation or complications. Early screening for undetected PH in T2DM and prediabetes subjects with hypertension may prevent complications.

5.
Breast Cancer Res ; 26(1): 113, 2024 Jul 04.
Article in English | MEDLINE | ID: mdl-38965558

ABSTRACT

GNA13 (Gα13) is one of two alpha subunit members of the G12/13 family of heterotrimeric G-proteins which mediate signaling downstream of GPCRs. It is known to be essential for embryonic development and vasculogenesis and has been increasingly shown to be involved in mediating several steps of cancer progression. Recent studies found that Gα13 can function as an oncogene and contributes to progression and metastasis of multiple tumor types, including ovarian, head and neck and prostate cancers. In most cases, Gα12 and Gα13, as closely related α-subunits in the subfamily, have similar cellular roles. However, in recent years their differences in signaling and function have started to emerge. We previously identified that Gα13 drives invasion of Triple Negative Breast Cancer (TNBC) cells in vitro. As a highly heterogenous disease with various well-defined molecular subtypes (ER+ /Her2-, ER+ /Her2+, Her2+, TNBC) and subtype associated outcomes, the function(s) of Gα13 beyond TNBC should be explored. Here, we report the finding that low expression of GNA13 is predictive of poorer survival in breast cancer, which challenges the conventional idea of Gα12/13 being universal oncogenes in solid tumors. Consistently, we found that Gα13 suppresses the proliferation in multiple ER+ breast cancer cell lines (MCF-7, ZR-75-1 and T47D). Loss of GNA13 expression drives cell proliferation, soft-agar colony formation and in vivo tumor formation in an orthotopic xenograft model. To evaluate the mechanism of Gα13 action, we performed RNA-sequencing analysis on these cell lines and found that loss of GNA13 results in the upregulation of MYC signaling pathways in ER+ breast cancer cells. Simultaneous silencing of MYC reversed the proliferative effect from the loss of GNA13, validating the role of MYC in Gα13 regulation of proliferation. Further, we found Gα13 regulates the expression of MYC, at both the transcript and protein level in an ERα dependent manner. Taken together, our study provides the first evidence for a tumor suppressive role for Gα13 in breast cancer cells and demonstrates for the first time the direct involvement of Gα13 in ER-dependent regulation of MYC signaling. With a few exceptions, elevated Gα13 levels are generally considered to be oncogenic, similar to Gα12. This study demonstrates an unexpected tumor suppressive role for Gα13 in ER+ breast cancer via regulation of MYC, suggesting that Gα13 can have subtype-dependent tumor suppressive roles in breast cancer.


Subject(s)
Cell Proliferation , Estrogen Receptor alpha , GTP-Binding Protein alpha Subunits, G12-G13 , Gene Expression Regulation, Neoplastic , Proto-Oncogene Proteins c-myc , Humans , GTP-Binding Protein alpha Subunits, G12-G13/metabolism , GTP-Binding Protein alpha Subunits, G12-G13/genetics , Female , Estrogen Receptor alpha/metabolism , Estrogen Receptor alpha/genetics , Animals , Cell Line, Tumor , Mice , Proto-Oncogene Proteins c-myc/genetics , Proto-Oncogene Proteins c-myc/metabolism , Triple Negative Breast Neoplasms/genetics , Triple Negative Breast Neoplasms/pathology , Triple Negative Breast Neoplasms/metabolism , Breast Neoplasms/genetics , Breast Neoplasms/pathology , Breast Neoplasms/metabolism , Signal Transduction , Up-Regulation
6.
Mol Metab ; 87: 101997, 2024 Sep.
Article in English | MEDLINE | ID: mdl-39032642

ABSTRACT

OBJECTIVE: Currently, little is known about the mechanism(s) regulating global and specific protein translation during metabolic dysfunction-associated steatohepatitis (MASH; previously known as non-alcoholic steatohepatitis, NASH). METHODS: Unbiased label-free quantitative proteome, puromycin-labelling and polysome profiling were used to understand protein translation activity in vitro and in vivo. RESULTS: We observed a global decrease in protein translation during lipotoxicity in human primary hepatocytes, mouse hepatic AML12 cells, and livers from a dietary mouse model of MASH. Interestingly, proteomic analysis showed that Rplp1, which regulates ribosome and translation pathways, was one of the most downregulated proteins. Moreover, decreased Esrra expression and binding to the Rplp1 promoter, diminished Rplp1 gene expression during lipotoxicity. This, in turn, reduced global protein translation and Esrra/Rplp1-dependent translation of lysosome (Lamp2, Ctsd) and autophagy (sqstm1, Map1lc3b) proteins. Of note, Esrra did not increase its binding to these gene promoters or their gene transcription, confirming its regulation of their translation during lipotoxicity. Notably, hepatic Esrra-Rplp1-dependent translation of lysosomal and autophagy proteins also was impaired in MASH patients and liver-specific Esrra knockout mice. Remarkably, alternate day fasting induced Esrra-Rplp1-dependent expression of lysosomal proteins, restored autophagy, and reduced lipotoxicity, inflammation, and fibrosis in hepatic cell culture and in vivo models of MASH. CONCLUSIONS: Esrra regulation of Rplp1-mediated translation of lysosome/autolysosome proteins was downregulated during MASH. Alternate day fasting activated this novel pathway and improved MASH, suggesting that Esrra and Rplp1 may serve as therapeutic targets for MASH. Our findings also provided the first example of a nuclear hormone receptor, Esrra, to not only regulate transcription but also protein translation, via induction of Rplp1.


Subject(s)
Fasting , Lysosomes , Non-alcoholic Fatty Liver Disease , Animals , Mice , Humans , Lysosomes/metabolism , Fasting/metabolism , Non-alcoholic Fatty Liver Disease/metabolism , Non-alcoholic Fatty Liver Disease/genetics , Mice, Inbred C57BL , Ribosomal Proteins/metabolism , Ribosomal Proteins/genetics , Male , Hepatocytes/metabolism , Protein Biosynthesis , Autophagy , Liver/metabolism , Mice, Knockout
8.
Proc Natl Acad Sci U S A ; 121(21): e2318591121, 2024 May 21.
Article in English | MEDLINE | ID: mdl-38739802

ABSTRACT

The transcription factor p73, a member of the p53 tumor-suppressor family, regulates cell death and also supports tumorigenesis, although the mechanistic basis for the dichotomous functions is poorly understood. We report here the identification of an alternate transactivation domain (TAD) located at the extreme carboxyl (C) terminus of TAp73ß, a commonly expressed p73 isoform. Mutational disruption of this TAD significantly reduced TAp73ß's transactivation activity, to a level observed when the amino (N)-TAD that is similar to p53's TAD, is mutated. Mutation of both TADs almost completely abolished TAp73ß's transactivation activity. Expression profiling highlighted a unique set of targets involved in extracellular matrix-receptor interaction and focal adhesion regulated by the C-TAD, resulting in FAK phosphorylation, distinct from the N-TAD targets that are common to p53 and are involved in growth inhibition. Interestingly, the C-TAD targets are also regulated by the oncogenic, amino-terminal-deficient DNp73ß isoform. Consistently, mutation of C-TAD reduces cellular migration and proliferation. Mechanistically, selective binding of TAp73ß to DNAJA1 is required for the transactivation of C-TAD target genes, and silencing DNAJA1 expression abrogated all C-TAD-mediated effects. Taken together, our results provide a mechanistic basis for the dichotomous functions of TAp73 in the regulation of cellular growth through its distinct TADs.


Subject(s)
Cell Proliferation , Protein Domains , Transcriptional Activation , Tumor Protein p73 , Tumor Protein p73/metabolism , Tumor Protein p73/genetics , Humans , Cell Movement/genetics , Mutation , Cell Line, Tumor , Protein Isoforms/metabolism , Protein Isoforms/genetics , Tumor Suppressor Protein p53/metabolism , Tumor Suppressor Protein p53/genetics , Phosphorylation , Tumor Suppressor Proteins/metabolism , Tumor Suppressor Proteins/genetics
9.
Cells ; 13(7)2024 Mar 28.
Article in English | MEDLINE | ID: mdl-38607027

ABSTRACT

The pro-protein convertase FURIN (PCSK3) is implicated in a wide range of normal and pathological biological processes such as infectious diseases, cancer and cardiovascular diseases. Previously, we performed a systemic inhibition of FURIN in a mouse model of atherosclerosis and demonstrated significant plaque reduction and alterations in macrophage function. To understand the cellular mechanisms affected by FURIN inhibition in myeloid cells, we optimized a CRISPR-mediated gene deletion protocol for successfully deriving hemizygous (HZ) and nullizygous (NZ) FURIN knockout clones in U937 monocytic cells using lipotransfection-based procedures and a dual guide RNA delivery strategy. We observed differences in monocyte and macrophage functions involving phagocytosis, lipid accumulation, cell migration, inflammatory gene expression, cytokine release patterns, secreted proteomics (cytokines) and whole-genome transcriptomics between wild-type, HZ and NZ FURIN clones. These studies provide a mechanistic basis on the possible roles of myeloid cell FURIN in cardiovascular disorders.


Subject(s)
Furin , Gene Editing , Monocytes , Animals , Humans , Mice , Clustered Regularly Interspaced Short Palindromic Repeats , Cytokines/genetics , Furin/genetics , Furin/metabolism , Monocytes/metabolism , Multiomics , RNA, Guide, CRISPR-Cas Systems , U937 Cells
10.
Biomed Pharmacother ; 173: 116341, 2024 Apr.
Article in English | MEDLINE | ID: mdl-38428309

ABSTRACT

Obesity is a significant risk factor for several chronic diseases. However, pre-menopausal females are protected against high-fat diet (HFD)-induced obesity and its adverse effects. The pregnane X receptor (PXR, NR1I2), a xenobiotic-sensing nuclear receptor, promotes short-term obesity-associated liver disease only in male mice but not in females. Therefore, the current study investigated the metabolic and pathophysiological effects of a long-term 52-week HFD in female wild-type (WT) and PXR-KO mice and characterized the PXR-dependent molecular pathways involved. After 52 weeks of HFD ingestion, the body and liver weights and several markers of hepatotoxicity were significantly higher in WT mice than in their PXR-KO counterparts. The HFD-induced liver injury in WT female mice was also associated with upregulation of the hepatic mRNA levels of peroxisome proliferator-activated receptor gamma (Pparg), its target genes, fat-specific protein 27 (Fsp27), and the liver-specific Fsp27b involved in lipid accumulation, apoptosis, and inflammation. Notably, PXR-KO mice displayed elevated hepatic Cyp2a5 (anti-obesity gene), aldo-keto reductase 1b7 (Akr1b7), glutathione-S-transferase M3 (Gstm3) (antioxidant gene), and AMP-activated protein kinase (AMPK) levels, contributing to protection against long-term HFD-induced obesity and inflammation. RNA sequencing analysis revealed a general blunting of the transcriptomic response to HFD in PXR-KO compared to WT mice. Pathway enrichment analysis demonstrated enrichment by HFD for several pathways, including oxidative stress and redox pathway, cholesterol biosynthesis, and glycolysis/gluconeogenesis in WT but not PXR-KO mice. In conclusion, this study provides new insights into the molecular mechanisms by which PXR deficiency protects against long-term HFD-induced severe obesity and its adverse effects in female mice.


Subject(s)
Diet, High-Fat , Liver , Male , Female , Mice , Animals , Pregnane X Receptor/genetics , Pregnane X Receptor/metabolism , Diet, High-Fat/adverse effects , Mice, Inbred C57BL , Weight Gain , Obesity/metabolism , Inflammation/metabolism , Mice, Knockout
11.
Diabetes Obes Metab ; 26(6): 2158-2166, 2024 Jun.
Article in English | MEDLINE | ID: mdl-38433703

ABSTRACT

AIM: Type 1 diabetes results from autoimmune events influenced by environmental variables, including changes in diet. This study investigated how feeding refined versus unrefined (aka 'chow') diets affects the onset and progression of hyperglycaemia in non-obese diabetic (NOD) mice. METHODS: Female NOD mice were fed either unrefined diets or matched refined low- and high-fat diets. The onset of hyperglycaemia, glucose tolerance, food intake, energy expenditure, circulating insulin, liver gene expression and microbiome changes were measured for each dietary group. RESULTS: NOD mice consuming unrefined (chow) diets developed hyperglycaemia at similar frequencies. By contrast, mice consuming the defined high-fat diet had an accelerated onset of hyperglycaemia compared to the matched low-fat diet. There was no change in food intake, energy expenditure, or physical activity within each respective dietary group. Microbiome changes were driven by diet type, with chow diets clustering similarly, while refined low- and high-fat bacterial diversity also grouped closely. In the defined dietary cohort, liver gene expression changes in high-fat-fed mice were consistent with a greater frequency of hyperglycaemia and impaired glucose tolerance. CONCLUSION: Glucose intolerance is associated with an enhanced frequency of hyperglycaemia in female NOD mice fed a defined high-fat diet. Using an appropriate matched control diet is an essential experimental variable when studying changes in microbiome composition and diet as a modifier of disease risk.


Subject(s)
Diabetes Mellitus, Type 1 , Diet, High-Fat , Hyperglycemia , Mice, Inbred NOD , Animals , Diet, High-Fat/adverse effects , Female , Diabetes Mellitus, Type 1/metabolism , Diabetes Mellitus, Type 1/microbiology , Mice , Hyperglycemia/etiology , Glucose Intolerance/etiology , Energy Metabolism , Liver/metabolism , Diet, Fat-Restricted , Insulin/metabolism , Insulin/blood , Blood Glucose/metabolism
12.
Small ; : e2310175, 2024 Feb 25.
Article in English | MEDLINE | ID: mdl-38402424

ABSTRACT

Van der Waals semiconductors (vdWS) offer superior mechanical and electrical properties and are promising for flexible microelectronics when combined with polymer substrates. However, the self-passivated vdWS surfaces and their weak adhesion to polymers tend to cause interfacial sliding and wrinkling, and thus, are still challenging the reliability of vdWS-based flexible devices. Here, an effective covalent vdWS-polymer lamination method with high stretch tolerance and excellent electronic performance is reported. Using molybdenum disulfide (MoS2 )and polydimethylsiloxane (PDMS) as a case study, gold-chalcogen bonding and mercapto silane bridges are leveraged. The resulting composite structures exhibit more uniform and stronger interfacial adhesion. This enhanced coupling also enables the observation of a theoretically predicted tension-induced band structure transition in MoS2 . Moreover, no obvious degradation in the devices' structural and electrical properties is identified after numerous mechanical cycle tests. This high-quality lamination enhances the reliability of vdWS-based flexible microelectronics, accelerating their practical applications in biomedical research and consumer electronics.

13.
ACS Appl Mater Interfaces ; 16(7): 9144-9154, 2024 Feb 21.
Article in English | MEDLINE | ID: mdl-38346142

ABSTRACT

We demonstrate direct-write patterning of single and multilayer MoS2 via a focused electron beam-induced etching (FEBIE) process mediated with the XeF2 precursor. MoS2 etching is performed at various currents, areal doses, on different substrates, and characterized using scanning electron and atomic force microscopies as well as Raman and photoluminescence spectroscopies. Scanning transmission electron microscopy reveals a sub-40 nm etching resolution and the progression of point defects and lateral etching of the consequent unsaturated bonds. The results confirm that the electron beam-induced etching process is minimally invasive to the underlying material in comparison to ion beam techniques, which damage the subsurface material. Single-layer MoS2 field-effect transistors are fabricated, and device characteristics are compared for channels that are edited via the selected area etching process. The source-drain current at constant gate and source-drain voltage scale linearly with the edited channel width. Moreover, the mobility of the narrowest channel width decreases, suggesting that backscattered and secondary electrons collaterally affect the periphery of the removed area. Focused electron beam doses on single-layer transistors below the etching threshold were also explored as a means to modify/thin the channel layer. The FEBIE exposures showed demonstrative effects via the transistor transfer characteristics, photoluminescence spectroscopy, and Raman spectroscopy. While strategies to minimize backscattered and secondary electron interactions outside of the scanned regions require further investigation, here, we show that FEBIE is a viable approach for selective nanoscale editing of MoS2 devices.

14.
bioRxiv ; 2024 Jan 10.
Article in English | MEDLINE | ID: mdl-38260502

ABSTRACT

Protein translation is an energy-intensive ribosome-driven process that is reduced during nutrient scarcity to conserve cellular resources. During prolonged starvation, cells selectively translate specific proteins to enhance their survival (adaptive translation); however, this process is poorly understood. Accordingly, we analyzed protein translation and mRNA transcription by multiple methods in vitro and in vivo to investigate adaptive hepatic translation during starvation. While acute starvation suppressed protein translation in general, proteomic analysis showed that prolonged starvation selectively induced translation of lysosome and autolysosome proteins. Significantly, the expression of the orphan nuclear receptor, estrogen-related receptor alpha (Esrra) increased during prolonged starvation and served as a master regulator of this adaptive translation by transcriptionally stimulating 60S acidic ribosomal protein P1 (Rplp1) gene expression. Overexpression or siRNA knockdown of Esrra expression in vitro or in vivo led to parallel changes in Rplp1 gene expression, lysosome/autophagy protein translation, and autophagy. Remarkably, we have found that Esrra had dual functions by not only regulating transcription but also controling adaptive translation via the Esrra/Rplp1/lysosome/autophagy pathway during prolonged starvation.

15.
Curr Diabetes Rev ; 20(1): e100323214554, 2024.
Article in English | MEDLINE | ID: mdl-36896906

ABSTRACT

BACKGROUND: Over the past two decades, insulin glargine 100 U/mL (Gla-100) has emerged as the "standard of care" basal insulin for the management of type 1 diabetes mellitus (T1DM). Both formulations, insulin glargine 100 U/mL (Gla-100) and glargine 300 U/mL (Gla- 300) have been extensively studied against various comparator basal insulins across various clinical and real-world studies. In this comprehensive article, we reviewed the evidence on both insulin glargine formulations in T1DM across clinical trials and real-world studies. METHODS: Evidence in T1DM for Gla-100 and Gla-300 since their approvals in 2000 and 2015, respectively, were reviewed. RESULTS: Gla-100 when compared to the second-generation basal insulins, Gla-300 and IDeg-100, demonstrated a comparable risk of overall hypoglycemia, but the risk of nocturnal hypoglycemia was higher with Gla-100. Additional benefits of Gla-300 over Gla-100 include a prolonged (>24- hours) duration of action, a more stable glucose-lowering profile, improved treatment satisfaction, and greater flexibility in the dose administration timing. CONCLUSION: Both glargine formulations are largely comparable to other basal insulins in terms of glucose-lowering properties in T1DM. Further, risk of hypoglycemia is lower with Gla-100 than Neutral Protamine Hagedorn but comparable to insulin detemir.


Subject(s)
Diabetes Mellitus, Type 1 , Diabetes Mellitus, Type 2 , Hypoglycemia , Humans , Insulin Glargine/adverse effects , Diabetes Mellitus, Type 1/drug therapy , Hypoglycemic Agents/adverse effects , Diabetes Mellitus, Type 2/drug therapy , Blood Glucose , Glycated Hemoglobin , Hypoglycemia/chemically induced , Glucose
16.
J Clin Endocrinol Metab ; 109(2): e562-e568, 2024 Jan 18.
Article in English | MEDLINE | ID: mdl-37772731

ABSTRACT

BACKGROUND: Adrenal insufficiency (AI) in hemoglobin E (HbE)/beta thalassemia, including evaluation of mineralocorticoid axis, had not been studied. AIMS AND OBJECTIVES: In this study, we attempted to evaluate the prevalence of AI in HbE/beta thalassemia and wanted to determine if the prevalence of AI varied according to severity of HbE/beta thalassemia and transfusion requirements. METHODS: In this observational, cross-sectional study, 104 patients with HbE/beta thalassemia were evaluated. Among them, 57 and 47 were transfusion dependent and non-transfusion dependent. According to Mahidol criteria, patients were classified into mild (n = 39), moderate (n = 39), and severe (n = 26) disease. Early morning (8 Am) serum cortisol, plasma ACTH, and plasma aldosterone, renin were measured. Patients with baseline cortisol of 5 to 18 µg/dL underwent both 1 µg and 250 µg short Synacthen test. According to these results, patients were classified as having either normal, subclinical, or overt (primary/secondary) adrenal dysfunction. RESULTS: Adrenal insufficiency was found in 41% (n = 43). Among them 83.7% (n = 34) had primary AI and 16.3% (n = 9) had secondary AI. Thirty-three patients (31%) with normal or elevated ACTH and with low or normal aldosterone with high renin were diagnosed as having subclinical AI. There was no difference in prevalence of AI between transfusion dependent and non-transfusion dependent (P = .56) nor was there was any difference in prevalence of AI according to disease severity (P = .52). CONCLUSION: Adrenal insufficiency is common in HbE/beta thalassemia and is independent of transfusion dependency and disease severity.


Subject(s)
Adrenal Insufficiency , Hemoglobin E , beta-Thalassemia , Humans , Hydrocortisone , beta-Thalassemia/complications , beta-Thalassemia/epidemiology , beta-Thalassemia/therapy , Aldosterone , Cross-Sectional Studies , Renin , Adrenocorticotropic Hormone , Adrenal Insufficiency/diagnosis , Adrenal Insufficiency/epidemiology , Adrenal Insufficiency/etiology
17.
Endocr Pract ; 30(2): 128-134, 2024 Feb.
Article in English | MEDLINE | ID: mdl-37984730

ABSTRACT

BACKGROUND: Once-weekly basal insulin icodec has been tested in clinical trials for efficacy and safety over currently available glargine-100 and degludec in different clinical settings for type 2 diabetes. We performed this meta-analysis to evaluate its overall safety and efficacy as compared to glargine-100 and degludec (nonicodec), from all available randomized controlled trials. METHODS: Seven trials comparing once-daily basal insulin analogs to once-weekly basal insulin icodec were included. Based on available information, outcomes in terms of HbA1c, fasting plasma glucose reduction, and increase in time in range (TIR) were compared. Side-effects were compared for overall hypoglycemia, severe hypoglycemia, and weight gain. The pooled effect size for continuously distributed data was measured as a reduction in "estimated differences in mean (with 95% CI)." For categorical data, the pooled effect size was measured as the Mantel-Haenszel risk ratio (with 95% CI). RESULTS: Analyzing against the nonicodec comparators together, the "estimated mean changes" in HbA1c and fasting plasma glucose favoring icodec were -0.22% (-0.35, -0.10) and -1.59 mg% (-9.26, 6.08) respectively. The "estimated mean increment" in weight for icodec was 0.64 kg (0.61, 0.67). The "estimated mean percentage" increment in TIR for icodec was 4.24% (2.99, 5.49). The Mantel-Haenszel risk ratios for all hypoglycemic events and severe hypoglycemia for icodec were 1.24 (1.02, 1.50) (P = .03) and 0.81 (0.31, 2.08) (P is not significant), respectively, suggesting a 24% increased incidence of all hypoglycemia with icodec. CONCLUSION: Once-weekly basal insulin icodec as compared to once-daily basal insulin analogs had a slight increase in the risk of overall hypoglycemia and weight gain, without any difference in severe hypoglycemia, with similar glycemic control (in terms of fasting plasma glucose, HbA1c, and TIR).


Subject(s)
Diabetes Mellitus, Type 2 , Hypoglycemia , Insulin, Long-Acting , Humans , Insulin Glargine/therapeutic use , Diabetes Mellitus, Type 2/drug therapy , Blood Glucose , Glycated Hemoglobin , Hypoglycemic Agents/adverse effects , Hypoglycemia/chemically induced , Hypoglycemia/epidemiology , Hypoglycemia/drug therapy , Weight Gain , Insulin/therapeutic use
18.
J ASEAN Fed Endocr Soc ; 38(2): 128-130, 2023.
Article in English | MEDLINE | ID: mdl-38045663

ABSTRACT

Impaired awareness of hypoglycaemia (IAH) is present in around 25-40% of individuals with type 1 diabetes mellitus (T1DM). Herein, we present a case of an adolescent with T1DM and IAH who had worse corneal nerve parameters compared to a T1DM adolescent without IAH. Small fibre abnormalities detected by corneal confocal microscopy in an objective easy-to-perform non-invasive test might be a surrogate indicator of underlying autonomic dysfunction in T1DM and IAH.


Subject(s)
Autonomic Nervous System Diseases , Diabetes Mellitus, Type 1 , Hypoglycemia , Humans , Adolescent , Diabetes Mellitus, Type 1/complications , Cornea/diagnostic imaging , Microscopy, Confocal
19.
Indian J Endocrinol Metab ; 27(5): 398-403, 2023.
Article in English | MEDLINE | ID: mdl-38107729

ABSTRACT

Introduction: A structured dedicated health programme for Type 1 diabetes mellitus (T1DM) has been initiated in the state of West Bengal, India. Aim: The aim is to provide comprehensive healthcare to all children, adolescents and young adults living with T1DM, along with the provision of free supply of insulin, glucose measuring devices, blood glucose test strips, and other logistics. The strategic framework for programme implementation is to utilise the infrastructure and manpower of the already existing non-communicable disease (NCD) clinic under National Health Mission. Methodology: Establishing dedicated T1DM clinics in each district hospital by utilising existing healthcare delivery systems, intensive training and hand-holding of named human resources; providing comprehensive healthcare service and structured diabetes education to all T1DM patients; and building an electronic registry of patients are important components of the programme. T1DM clinics run once a week on the same day throughout the state. All T1DM patients are treated with the correct dose of insulin, both human regular insulin and glargine insulin. Patients are routinely monitored monthly to ensure good glycaemic control and prevent complications of the disease. Routine anthropometric examination and required laboratory investigations are conducted in the set-up of the already existing NCD clinic. Ongoing monitoring and evaluation of the T1DM programme are being conducted in terms of glycated haemoglobin (HbA1c) values, growth and development, complication rates, psychological well-being, quality of life, and direct and indirect expenditure incurred by families. Through this programme, any bottlenecks or gaps in service delivery will be identified and corrective measures will be adopted to ensure better health outcomes for those living with T1DM.

20.
JCEM Case Rep ; 1(3): luad057, 2023 May.
Article in English | MEDLINE | ID: mdl-37908579

ABSTRACT

An 18-year-old girl was evaluated for primary amenorrhea. She was diagnosed with hemoglobin E (HbE)/beta-thalassemia during childhood and needed blood transfusions every month to maintain adequate hemoglobin levels. She was started on thalidomide to reduce her transfusion requirements at 12 years of age and became transfusion independent after 6 months. She had normal stature and Tanner stage 4 sexual maturation, but she failed to attain menarche. Investigations revealed that she had elevated serum gonadotropin levels, indicating primary ovarian dysfunction. Her karyotype was 46,XX. Ultrasonographic examination demonstrated the absence of follicles in both ovaries. There was no evidence of abnormalities of the urogenital tract. Thalidomide was stopped, and she attained menarche spontaneously 3 months thereafter. Subsequently, her menstrual cycles were regular. Repeat ultrasound scans demonstrated the presence of ovarian follicles as well as an increase in ovarian volume. Mechanistic links between ovarian dysfunction and thalidomide remain to be found. One possibility is impaired blood flow and follicular development.

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