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Recent studies have shed light on disrupted collagen signaling in Gliomas, yet the regulatory landscape remains largely unexplored. This study enquired into the role of polycomb repressive complex-2 (PRC2)-mediated H3K27me3 modification, a key epigenetic factor in glioma. Using in-house data, we identified miRNAs downregulated in glioblastoma (GBM) with the potential to regulate Collagen VI family genes. Notably, miR-3189 emerged as a prime PRC2 target. Its expression was significantly downregulated in Indian GBM patients as well as other glioma cohorts. Mechanistic insights, involving Luciferase assays, mutagenesis, and Western blot analysis, confirmed direct targeting of Collagen VI member COL6A2 by miR-3189-3p. Functional assays demonstrated that miR-3189-3p restrained GBM malignancy by inhibiting proliferation, migration, and epithelial-mesenchymal transition (EMT). Conversely, COL6A2 overexpressed in GBM patients, countered miR-3189, and promoted the malignant phenotype. Gene set enrichment analysis highlighted EMT enrichment in GBM patients with elevated COL6A2 expression, carrying prognostic implications. This study uncovers intricate interactions between two epigenetic regulators-H3K27me3 and miR-3189-working synergistically to modulate Collagen VI gene; thus, influencing the malignancy of GBM. Targeting this H3K27me3|miR-3189-3p|COL6A2 axis presents a potential therapeutic avenue against GBM.
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Movimento Celular , Proliferação de Células , Colágeno Tipo VI , Transição Epitelial-Mesenquimal , Regulação Neoplásica da Expressão Gênica , Glioblastoma , MicroRNAs , Complexo Repressor Polycomb 2 , Humanos , Transição Epitelial-Mesenquimal/genética , Glioblastoma/genética , Glioblastoma/patologia , Glioblastoma/metabolismo , MicroRNAs/genética , MicroRNAs/metabolismo , Regulação Neoplásica da Expressão Gênica/genética , Colágeno Tipo VI/genética , Colágeno Tipo VI/metabolismo , Linhagem Celular Tumoral , Proliferação de Células/genética , Movimento Celular/genética , Complexo Repressor Polycomb 2/genética , Complexo Repressor Polycomb 2/metabolismo , Neoplasias Encefálicas/genética , Neoplasias Encefálicas/patologia , Neoplasias Encefálicas/metabolismo , Epigênese Genética/genéticaRESUMO
Photoperiod regulation of gonadal cycles is well studied and documented in both birds and mammals. Change in photoperiod is considered as the most effective and important cue to time the initiation of the annual physiological cycles in birds. Approaching of long days (as observed in summer months), signal long-day breeding birds to initiation reproduction and other related functions. Birds and other non-mammalian vertebrates use the extraocular photoreceptors which may be present in the mediobasal hypothalamus (MBH) or associated regions to measure the photoperiodic time and so are different from mammals where only the eyes are lone photoreceptive organs. The downstream signaling involves thyroid responsive genes playing a crucial role in mediating photoperiodic signals in both birds and mammals. Role of eyes in the avian seasonal cycle has been a questionable issue with evidences both favoring and negating any role. We propose that morphological as well as physiological data argue that retinal photoreceptors can participate in gonadal cycle, at least in the quail and duck. The present review details the studies of photoneuroendocrine control of gonadal axis in birds and review evidences to decipher the role eyes in photoperiodic mediated physiologies in birds.
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Ritmo Circadiano , Fotoperíodo , Animais , Estações do Ano , Ritmo Circadiano/fisiologia , Aves/fisiologia , Mamíferos/fisiologiaRESUMO
ABSTRACT: Diagnostic and Statistical Manual of Mental Disorders, Fifth Edition defines gender identity disorder (GID) as a strong and persistent identification with the opposite sex and the distress that may accompany the incongruence between one's experienced or expressed gender and one's assigned gender. The onset of GID commonly begins early in childhood. Gender dysphoria has a higher prevalence of other comorbid psychiatric illnesses, such as mood, anxiety, and adjustment disorders, with increased suicide incidence and self-harming behaviors than the general population. Studies show that some temperamental, environmental, genetic, and psychological factors play a role in developing GID. Approximately 16% of transgender people and 21% of transgender women get incarcerated compared with the general US population. During incarceration, they face many issues, such as victimization, severe verbal harassment, purposeful humiliation, unwanted sexual advances, physical assault, forcible sex, and unwanted strip searches. There is a need for a better understanding of the issues and needs of this population to promote positive outcomes.
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Comorbidade , Disforia de Gênero , Prisioneiros , Humanos , Disforia de Gênero/epidemiologia , Disforia de Gênero/psicologia , Feminino , Prisioneiros/psicologia , Prisioneiros/estatística & dados numéricos , Masculino , Adulto , Pessoas Transgênero/psicologia , Pessoas Transgênero/estatística & dados numéricos , Transtornos Mentais/epidemiologia , EncarceramentoRESUMO
OBJECTIVE: The objective of our study is to estimate the prevalence of endometrial cavity fluid (ECF) in Assisted Reproductive Techniques (ART) cycles and analyze its effects on pregnancy outcome in such cycles. DATA SOURCES: PubMed, Cochrane Central, Scopus, and clinicaltrials.gov were searched for articles. The reference lists of relevant publications were explored for other studies. STUDY ELIGIBILITY CRITERIA: Studies that had assessed the pregnancy outcome in ART cycles and had commented on ECF accumulation were included. Pregnancy outcomes were assessed in all ART cycles where ECF was observed and were compared to the non-ECF cycles. RESULTS: A total of nine studies were included in the meta-analysis for a total of 28,210 cycles. Pooled analysis of the prevalence of ECF cycles out of total cycles in females undergoing ART using a fixed effect model showed that it was 14% (95% CI is 13% to 14%; I2 = 99%, p = < 0.01). The random effect model prevalence of ECF cycles was around 7% (95% CI: 4% to 10%). There was a statistically significant (25%) decrease in pregnancy rates per cycle transfer in the ECF cycle versus the non-ECF cycle group during ART [OR = 0.75, 95% CI = 0.67-0.84), p < 0.001; moderate quality evidence]. When ECF size was compared, there was a statistically significant increase in pregnancy rates if ECF size was less than 3.5 mm versus greater than or equal to 3.5 mm [OR = 13.67, 95% CI = 1.43-130.40), p = 0.02; high quality evidence]. Sub-group analysis revealed that the ECF present at the time of embryo transfer significantly decreased the pregnancy rates by 26% as compared to the group where the ECF was not present at the time of embryo transfer [OR = 0.74, 95% CI = 0.65-0.85), p < 0.001]. CONCLUSIONS: This meta-analysis proposes that the presence of ECF significantly decreases the implantation and pregnancy rates of ART cycles, and even more so if its size is greater than 3.5 mm. Interventions to decrease ECF formation or treat it have enhanced the pregnancy outcome in ART cycles. PROSPERO REGISTRATION: Date: 17th September 2020; Number: CRD42020182262.
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Endométrio , Nascido Vivo , Humanos , Feminino , Gravidez , Nascido Vivo/epidemiologia , Técnicas de Reprodução Assistida , Resultado da Gravidez , Taxa de Gravidez , Fertilização in vitroRESUMO
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Forest soils are a pressing subject of worldwide research owing to the several roles of forests such as carbon sinks. Currently, the living soil ecosystem has become dreadful as a consequence of several anthropogenic activities including climate change. Climate change continues to transform the living soil ecosystem as well as the soil microbiome of planet Earth. The majority of studies have aimed to decipher the role of forest soil bacteria and fungi to understand and predict the impact of climate change on soil microbiome community structure and their ecosystem in the environment. In forest soils, microorganisms live in diverse habitats with specific behavior, comprising bulk soil, rhizosphere, litter, and deadwood habitats, where their communities are influenced by biotic interactions and nutrient accessibility. Soil microbiome also drives multiple crucial steps in the nutrient biogeochemical cycles (carbon, nitrogen, phosphorous, and sulfur cycles). Soil microbes help in the nitrogen cycle through nitrogen fixation during the nitrogen cycle and maintain the concentration of nitrogen in the atmosphere. Soil microorganisms in forest soils respond to various effects of climate change, for instance, global warming, elevated level of CO2, drought, anthropogenic nitrogen deposition, increased precipitation, and flood. As the major burning issue of the globe, researchers are facing the major challenges to study soil microbiome. This review sheds light on the current scenario of knowledge about the effect of climate change on living soil ecosystems in various climate-sensitive soil ecosystems and the consequences for vegetation-soil-climate feedbacks.
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Ecossistema , Microbiota , Mudança Climática , Solo/química , Florestas , Nitrogênio/análise , Microbiologia do Solo , CarbonoRESUMO
Glioblastoma (GBM) is the most aggressive, malignant, and therapeutically challenging Grade IV tumor of the brain. Although the possibility of distant metastasis is extremely rare, GBM is known to cause intracranial metastasis forming aggressive secondary lesions resulting in a dismal prognosis. Metastasis also plays an important role in tumor dissemination and recurrence making GBM largely incurable. Recent studies have indicated the importance of long noncoding RNAs (lncRNAs) in GBM metastasis. lncRNAs are a class of regulatory noncoding RNAs (>200 nt) that interact with DNA, RNA, and proteins to regulate various biological processes. This is the first comprehensive review summarizing the lncRNAs associated with GBM metastasis and the underlying molecular mechanism involved in migration/invasion. We also highlight the complex network of lncRNA/miRNA/protein that collaborate/compete to regulate metastasis-associated genes. Many of these lncRNAs also show attractive potential as diagnostic/prognostic biomarkers. Finally, we discuss various therapeutic strategies and potential applications of lncRNAs as therapeutic targets for the treatment of GBM.
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Glioblastoma , RNA Longo não Codificante , Biomarcadores , Biomarcadores Tumorais/genética , Biomarcadores Tumorais/metabolismo , Perfilação da Expressão Gênica , Regulação Neoplásica da Expressão Gênica/genética , Redes Reguladoras de Genes , Glioblastoma/genética , Glioblastoma/metabolismo , Glioblastoma/terapia , Humanos , Recidiva Local de Neoplasia/genética , RNA Longo não Codificante/genética , RNA Longo não Codificante/metabolismoRESUMO
BACKGROUND: Chickpea is the fourth most important legume crop contributing 15.42% to the total legume production and a rich source of proteins, minerals, and vitamins. Determination of genetic diversity of wild and elite cultivars coupled with early flowering and higher seed germination lines are quintessential for variety improvement. METHODS AND RESULTS: In the present study, we have analyzed the genetic diversity, population structure, cross-species transferability, and allelic richness in 50 chickpea collections using 23 Inter simple sequence repeats (ISSR) markers. The observed parameters such as allele number varied from 3 to 16, range of allele size varied from 150 to 1600 bp and polymorphic information content (PIC) range lies in between 0.15 and 0.49. Dendrogram was constructed with ISSR marker genotypic data and classified 50 chickpea germplasms into groups I and II, where the accession P 74 - 1 is in group I and the rest are in group II. Dendrogram, Principal component analysis (PCA), dissimilarity matrix, and Bayesian model-based genetic clustering of 50 chickpea germplasms revealed that P 74 - 1 and P 1883 are very diverse chickpea accessions. CONCLUSION: Based on genetic diversity analysis, 15 chickpea germplasm having been screened for early flowering and higher seed germination and found that the P 1857-1 and P 3971 have early flowering and higher seed germination percentage in comparison to P 1883 and other germplasm. These agronomic traits are essential for crop improvement and imply the potential of ISSR markers in crop improvement.
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Cicer , Teorema de Bayes , Biomarcadores , Cicer/genética , Variação Genética/genética , Genótipo , Germinação/genética , Repetições de Microssatélites/genética , Sementes/genéticaRESUMO
BACKGROUND: One of the most common causes of postoperative morbidity is postoperative surgical site infection (SSI). Healthcare-associated infection is a subject of great concern in healthcare services. The goal of the present study is to estimate the relative effectiveness of skin preparation solution chlorhexidine scrub followed by povidone-iodine painting in the prevention of SSIs after caesarean delivery and abdominal gynecological surgery. MATERIAL AND METHODS: This is a 1-year randomized prospective research done at a tertiary care institution in western Rajasthan. Women who underwent caesarean and gynecological operations were randomly assigned to one of two groups. Enrolled patients were randomly assigned to have the surgical site painted with 10% povidone-iodine or a chlorhexidine-alcohol preparatory scrub followed by povidone-iodine paint. According to the Centres for Disease Control and Prevention criteria, the outcomes were any SSI occurring within a week or during the 30-day follow-up period following the operation, including any superficial or deep SSI. RESULTS: A total of 251 patients were randomly assigned to two groups. Group A (povidone-iodine paint) received 121 patients, whereas Group B (chlorhexidine scrub + povidone-iodine paint) received 129 cases. The overall SSI rate in the present study was 8.76%. The SSI rate was lower in Group B (chlorhexidine scrub + povidone-iodine paint) as compared to Group A (povidone-iodine paint only) (5.4% vs. 12.4%; p = 0.04). CONCLUSION: This study highlighted that chlorhexidine-alcohol scrubbing followed by povidone-iodine painting provides superior skin antisepsis in comparison to povidone-iodine painting alone.
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Anti-Infecciosos Locais , Obstetrícia , Anti-Infecciosos Locais/uso terapêutico , Feminino , Procedimentos Cirúrgicos em Ginecologia/efeitos adversos , Humanos , Índia , Gravidez , Cuidados Pré-Operatórios , Estudos Prospectivos , Melhoria de Qualidade , Infecção da Ferida Cirúrgica/prevenção & controleRESUMO
OBJECTIVE: The goal of this study was to analyze how the COVID-19 pandemic affected the Obstetrics and Gynecology (OBG) residency program in India. STUDY DESIGN: This was a cross-sectional questionnaire-based online survey aimed to assess the impact of the pandemic on the residency training program in Obstetrics and Gynecology. The questionnaire consisted of five sections: demographic details, information regarding COVID-19 status, clinical work load, teaching and research, and psychological impact. RESULTS: The questionnaire was completed by 280 OBG trainees from different medical colleges from India. Training activity in general was reduced considerably during the pandemic, according to 79.6% (n = 223) respondents. According to 13.21% (n = 37) and 5% (n = 14) respondents, reduction in training activity were due to cancelation of elective operations and reduced patient foot fall respectively. In 74.3% (n = 208) of cases, trainees reported worry about meeting the goals of their specialty training. Logistic regression showed that the extent of training reduction was not significantly associated with residents' age (p = 0.806), gender (p = 0.982), marital status (p = 0.363), and status of their duty in COVID-19 dedicated hospitals (p = 0.110). However, year of residency was a significant predictor of the perception about degree of training reduction. CONCLUSION: The pandemic imposed a significant impact on OBG residency training in India. During the pandemic, exposure to learning opportunities, surgeries, and teaching were reduced, which may result in a decline in the quality of care offered to women in the future if training deficit is not overcome. At the same time, pandemic also gave birth to newer insights of learning and interaction by online mode.
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COVID-19 , Ginecologia , Internato e Residência , Obstetrícia , COVID-19/epidemiologia , Estudos Transversais , Feminino , Ginecologia/educação , Humanos , Obstetrícia/educação , Pandemias , Gravidez , Inquéritos e QuestionáriosRESUMO
In latitudinal avian migrants, increasing photoperiods induce fat deposition and body mass increase, and subsequent night-time migratory restlessness in captive birds, but the underlying mechanisms remain poorly understood. We hypothesized that an enhanced hypothalamic neuronal plasticity was associated with the photostimulated spring migration phenotype. We tested this idea in adult migratory red-headed buntings (Emberiza bruniceps), as compared with resident Indian weaverbirds (Ploceus philippinus). Birds were exposed to a stimulatory long photoperiod (14L:10D, LP), while controls were kept on a short photoperiod (10L:14D, SP). Under both photoperiods, one half of birds also received a high calorie, protein- and fat-rich diet (SP-R, LP-R) while the other half stayed on the normal diet (SP-N, LP-N). Thirty days later, as expected, the LP had induced multiple changes in the behaviour and physiology in migratory buntings. Photostimulated buntings also developed a preference for the rich food diet. Most interestingly, the LP and the rich diet, both separately and in association, increased neurogenesis in the mediobasal hypothalamus (MBH), as measured by an increased number of cells immunoreactive for doublecortin (DCX), a marker of recently born neurons, in buntings, but not weaverbirds. This neurogenesis was associated with an increased density of fibres immunoreactive for the orexigenic neuropeptide Y (NPY). This hypothalamic plasticity observed in a migratory, but not in a non-migratory, species in response to photoperiod and food quality might represent an adaptation to the pre-migratory fattening, as required to support the extensive energy expenses that incur during the migratory flight.
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Fotoperíodo , Aves Canoras , Migração Animal , Animais , Qualidade dos Alimentos , Hipotálamo , Estações do AnoRESUMO
Development of the songbird brain provides an excellent experimental model for understanding the regulation of sex differences in ontogeny. Considering the regulatory role of the hypothalamus in endocrine, in particular reproductive, physiology, we measured the structural (volume) and molecular correlates of hypothalamic development during ontogeny of male and female zebra finches. We quantified by relative quantitative polymerase chain reaction (rqPCR) the expression of 14 genes related to thyroid and steroid hormones actions as well as 12 genes related to brain plasticity at four specific time points during ontogeny and compared these expression patterns with the expression of the same genes as detected by transcriptomics in the telencephalon. These two different methodological approaches detected specific changes with age and demonstrated that in a substantial number of cases changes observed in both brain regions are nearly identical. Other genes however had a tissue-specific developmental pattern. Sex differences or interactions of sex by age were detected in the expression of a subset of genes, more in hypothalamus than telencephalon. These results correlate with multiple known aspects of the developmental and reproductive physiology but also raise a number of new functional questions.
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Hipotálamo/metabolismo , Desenvolvimento Sexual , Telencéfalo/metabolismo , Transcriptoma , Animais , Feminino , Tentilhões , Regulação da Expressão Gênica no Desenvolvimento , Hipotálamo/crescimento & desenvolvimento , Masculino , Receptores dos Hormônios Tireóideos/genética , Receptores dos Hormônios Tireóideos/metabolismo , Caracteres Sexuais , Telencéfalo/crescimento & desenvolvimentoRESUMO
Aerosol optical depth (AOD) and Ångström exponent (AE) are observed to be important parameters in understanding the status of ambient aerosol concentration over a particular location and depend not only upon the local but also on the large-scale dynamics of the atmosphere. The present article analyses the AOD and AE parameters retrieved with Moderate Resolution Imaging Spectrometer (MODIS) and Multi-angle Imaging Spectro-Radiometer (MISR) instruments onboard satellites, for the upper (Chamoli) and foothill (Dehradun) regions of Garhwal Himalaya in Uttarakhand, India, from 2006 to 2015. Aerosol properties are investigated at monthly, seasonal, and annual scales. The monthly mean values of MODIS-derived AOD and AE were observed to be 0.18 (± 0.14) and 1.05 (± 0.43) respectively over the Dehradun region. The seasonal maximums in AOD with MODIS and MISR were observed as 0.23 ± 0.06 and 0.29 ± 0.07 respectively in the pre-monsoon season, and the minimum values (0.099 ± 0.02) were observed in the post-monsoon season, over the Dehradun region. In contrast, in the Chamoli region, the maximum AOD (MODIS) was 0.21 ± 0.06 observed in the monsoon season and the minimum was 0.036 ± 0.007 in the post-monsoon season. Over a decade, the AE for Chamoli and Dehradun was found to vary from 0.07 to 0.17 and from 0.14 to 0.20 respectively. The median AE for Chamoli and Dehradun was found to be 1.49 and 1.47 respectively, marking the dominance of fine mode particles of anthropogenic origin. Observations show the presence of dust and polluted dust resulting from the long-range transport from the west. The comparison of AOD values from the two sensors shows a significant correlation (0.73) with slightly higher values from MISR over the year. The results obtained are important in understanding the climatic implications due to the atmospheric aerosols over the abovementioned Himalayan region of Uttarakhand, India.
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Atmosfera , Monitoramento Ambiental , Aerossóis/análise , Poeira/análise , ÍndiaRESUMO
Tuberculosis is a disease prevalent all over the world with India contributing to a larger share. Pulmonary tuberculosis presents with generalized symptoms of malaise, low grade fever and cough. On the other hand, genital tuberculosis presents with a variety of symptoms in each age group and is often underdiagnosed and missed. In an unmarried female, the usual presentations are menstrual complaints or presence of a solid cystic mass and ascites. In reproductive age group, patients may present with primary or secondary infertility or rarely with tubo-ovarian masses with peritoneal deposits, omental thickening and lymph node enlargement, hence mimicking ovarian carcinoma. In postmenopausal females, it can present as postmenopausal bleeding, leucorrhea or pyometra giving suspicion of endometrial carcinoma. We hereby report two cases operated with provisional diagnosis of ovarian malignancy but final histopathology ruled out malignancy in first and confirmed coexistence of malignancy and tuberculosis in another.
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Disgerminoma/diagnóstico , Neoplasias Ovarianas/diagnóstico , Tuberculose dos Genitais Femininos/diagnóstico , Adulto , Diagnóstico Diferencial , Disgerminoma/patologia , Feminino , Humanos , Índia , Neoplasias Ovarianas/complicações , Neoplasias Ovarianas/patologia , Neoplasias Ovarianas/terapia , Gravidez , Tuberculose dos Genitais Femininos/complicações , Tuberculose dos Genitais Femininos/tratamento farmacológico , Tuberculose dos Genitais Femininos/patologiaAssuntos
Inibidores Seletivos de Recaptação de Serotonina , Síndrome da Serotonina , Humanos , Estados Unidos , Inibidores Seletivos de Recaptação de Serotonina/efeitos adversos , Síndrome da Serotonina/induzido quimicamente , Síndrome da Serotonina/diagnóstico , Triptaminas/efeitos adversos , Serotoninérgicos , United States Food and Drug AdministrationRESUMO
BACKGROUND: Daily feeding and locomotion are interrelated behaviours. The time spent in feeding and rate of food intake depends on food availability. In low food condition, the birds would show intense movement (locomotion) for a longer time throughout the day however during abundant food supply they may chose higher activity and food intake in the morning and evening only. In the present study we hypothesized that in Spotted Munia (Lonchura punctulata), intermittent food availability during day would reallocate their interrelated behaviors, the feeding (food intake) and locomotor activity patterns. METHODS: Two groups of birds (N = 6 each) were kept individually in activity cages under 12L:12D. Group 1 (Control; C) had ad libitum food but group 2 (Treatment; T) had food for 6 hours only (2 h presence followed by 2 h absence; 2P:2A) during 12 hour light period. In the first week, group 2 received food with 'lights on' (TI; ZT 0-2, 4-6 and 8-10; where ZT 0= zeitgeber time 0, time of lights ON). In the following week, the food was given 2 hours after 'lights on' (TII; ZT 2-4, 6-8, 10-12). The food intake and locomotor activity under each condition were observed. RESULTS: The results showed that locomotor activity was induced during food deprivation and suppressed during food availability. Also the food deprivation led to increased food intake. CONCLUSION: Our results suggest that intermittent food availability/deprivation reallocates the locomotor activity and food intake in Spotted Munia.
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A long day response is triggered by the activation of EYA3 (eyes absent 3) and TSH-ß (thyroid stimulating hormone beta subunit) genes in the pars tuberalis (PT). However, protein products of these genes are not yet shown in the hypothalamus of a photoperiodic species. Therefore, using the 'first long day paradigm', EYA3 and TSH-ß along with c-FOS and GnRH peptides were immunohistochemically localized and measured in the hypothalamus of photoperiodic redheaded buntings that were maintained on short days (SD, LD 8/16) and subjected to one full long day (LD, LD 16/8). Following morning light remained turned off, and birds were sacrificed in the first hour of the day. Brains were collected and processed for immunohistochemistry of peptides. FOS-lir and GnRH-lir cells were significantly higher in the preoptic area (POA) in LD than in SD, which indicated photoperiod induced neuronal activation and downstream effects, respectively, under LD. In LD, EYA3-lir cells were significantly increased in septal lateralis (SL) with fibres extending to sub-septal organ (SSO); EYA3 fibres were very dense in median eminence. Similarly, there were significantly increased TSH-ß-lir cells in the ventricular region with much abundance in the PT and TSH-ß-lir fibres in the SSO (extending up to SL), inferior hypothalamic nucleus (IH) and infundibular nucleus (IN) in LD birds. Elevated EYA3, TSH-α and TSH-ß mRNA levels further confirmed photoperiodic induction at the transcriptional level in buntings on the first long day. These are the first results showing localization of photoperiodically induced peptides in the hypothalamus of a songbird species, the redheaded bunting.
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Migração Animal/fisiologia , Proteínas do Olho/metabolismo , Subunidade alfa de Hormônios Glicoproteicos/metabolismo , Hormônio Liberador de Gonadotropina/metabolismo , Passeriformes/fisiologia , Fotoperíodo , Proteínas Proto-Oncogênicas c-fos/metabolismo , Tireotropina Subunidade beta/metabolismo , Animais , Proteínas do Olho/genética , Subunidade alfa de Hormônios Glicoproteicos/genética , Hormônio Liberador de Gonadotropina/genética , Hipotálamo/metabolismo , Técnicas Imunoenzimáticas , Luz , Proteínas Proto-Oncogênicas c-fos/genética , RNA Mensageiro/genética , Reação em Cadeia da Polimerase em Tempo Real , Reação em Cadeia da Polimerase Via Transcriptase Reversa , Tireotropina Subunidade beta/genéticaRESUMO
Animals in the wild are exposed to daily variations in sun light, viz. duration, intensity and spectrum. Photosensitive blackheaded buntings (Emberiza melanocephala) were exposed to photoperiods differing in the length of light period, wavelengths and intensity. The effects of such light changes were measured on locomotor activity rhythm as well as seasonal responses like development of migratory restlessness: Zugunruhe, body mass and gonadal growth. The results show that the buntings are differentially responsive to light wavelengths and intensities and are indicative of a phase-dependent action of light on the circadian photoperiodic system. These birds seem to use changes in the light variables of the solar environment to regulate their circadian and seasonal responses.
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Ritmo Circadiano/fisiologia , Passeriformes/fisiologia , Tecido Adiposo/fisiologia , Tecido Adiposo/efeitos da radiação , Animais , Peso Corporal/fisiologia , Peso Corporal/efeitos da radiação , Masculino , Fotoperíodo , Estações do Ano , Testículo/fisiologia , Testículo/efeitos da radiaçãoRESUMO
BACKGROUND: Molecular entities showing dysregulation in multiple cancers may hold great biomarker or therapeutic potential. There is accumulating evidence that highlights the dysregulation of a long non-coding RNA, MIR210HG, in various cancers and its oncogenic role. However, a comprehensive analysis of MIR210HG expression pattern, molecular mechanisms, diagnostic or prognostic significance or evaluation of its interaction with tumor microenvironment across various cancers remains unstudied. METHODS: A systematic pan-cancer analysis was done using multiple public databases and bioinformatic tools to study the molecular role and clinical significance of MIR210HG. We have analyzed expression patterns, genome alteration, transcriptional and epigenetic regulation, correlation with patient survival, immune infiltrates, co-expressed genes, interacting proteins, and pathways associated with MIR210HG. RESULTS: The Pan cancer expression analysis of MIR210HG through various tumor datasets demonstrated that MIR210HG is significantly upregulated in most cancers and increased with the tumor stage in a subset of them. Furthermore, prognostic analysis revealed high MIR210HG expression is associated with poor overall and disease-free survival in specific cancer types. Genetic alteration analysis showed minimal alterations in the MIR210HG locus, indicating that overexpression in cancers is not due to gene amplification. The exploration of SNPs on MIR210HG suggested possible structural changes that may affect its interactions with the miRNAs. The correlation of MIR210HG with promoter methylation was found to be significantly negative in nature in majority of cancers depicting the possible epigenetic regulation of expression of MIR210HG. Additionally, MIR210HG showed negative correlations with immune cells and thus may have strong impact on the tumor microenvironment. Functional analysis indicates its association with hypoxia, angiogenesis, metastasis, and DNA damage repair processes. MIR210HG was found to interact with several proteins and potentially regulate chromatin modifications and transcriptional regulation. CONCLUSIONS: A first pan-can cancer analysis of MIR210HG highlights its transcriptional and epigenetic deregulation and oncogenic role in the majority of cancers, its correlation with tumor microenvironment factors such as hypoxia and immune infiltration, and its potential as a prognostic biomarker and therapeutic target in several cancers.
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Epigênese Genética , Neoplasias , Humanos , Biomarcadores , Hipóxia , Neoplasias/genética , Microambiente Tumoral/genéticaRESUMO
Background: Heart disease is the important cause of maternal morbidity and mortality during the antepartum and postpartum period. The prevalence of heart disease during pregnancy varies from 0.3 to 3.5% (2). We aimed to know the spectrum of heart disease in pregnancy and its impact on the maternal and fetal outcome. Methodology: The study was conducted in the Department of Obstetrics and Gynecology of the tertiary care referral Centre of Western Rajasthan, India. Data from November 2019 to October 2021 were collected from the labour room and obstetric ward records. Results:Forty-eight pregnant women were diagnosed with heart disease over a period of two years. The prevalence of heart disease in pregnancy was 1.3%. Rheumatic heart disease was the main cardiac lesion (85.42%), with mitral stenosis being the most commonly seen (31.25%). Previous cardiac surgery was found in 14.58% of patients. Half of women gave birth by spontaneous vaginal delivery (50%), 43.75% of subjects by cesarean section and 6.25% of participants underwent instrumental delivery. Admissions to intensive care unit (ICU) were noted in 16.67% of cases, and those to neonatal intensive care unit (NICU) in nine newborns (18.75%). There were only two maternal deaths and no baby born with congenital heart disease. Conclusion:Heart disease in pregnancy is a high-risk condition and significantly impacts the mother and fetal outcome. By proper antenatal, intrapartum and postnatal supervision under a multidisciplinary team, maternal and fetal mortality and morbidity can be reduced.