Publications by authors named "Ramakrishnan A"

Introduction: Hypogonadism is a common comorbidity associated with several metabolic disorders including type 2 diabetes (T2D) that can remain undetected without proper screening. Here, we evaluated the prevalence of hypogonadism in Indian male patients with T2D with or without obesity.

Methods: In this prospective, observational study, male patients with T2D and hypogonadism were evaluated symptomatically using the androgen deficiency in ageing male (ADAM) questionnaire at baseline and confirmed on the basis of total testosterone (TT) levels (<300 ng/dL) at Days 5-7 (Visit 2) and 9-14 (Visit 4) assessed after 12 hours of fasting between 8 AM and 10 AM.

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  • - This study explored whether there are health disparities in the prescription and use of menopause hormone therapy among perimenopausal and early postmenopausal women in the USA, by reviewing observational studies from 1940 until October 2023.
  • - Researchers found 16 different health disparities related to hormone therapy, noting significant differences based on ethnicity, education, medical conditions, and practitioner specialization.
  • - The findings indicate long-standing disparities in hormone therapy access and usage, highlighting the need for improved education for healthcare providers to better serve underserved populations.
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The study reported herein attempts to understand the neural mechanisms engaged in the conscious control of breathing and breath-hold. The variations in the electroencephalogram (EEG) based functional connectivity (FC) of the human brain have been investigated during attentive breathing at 2 cycles per minute (cpm). The study presents its novelty through three main aspects.

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  • Patients with head and neck tumors undergoing free flap reconstructions are at high risk of postoperative venous thromboembolism (VTE), prompting a review of anticoagulation practices and the use of subcutaneous heparin in this study.
  • A systematic review included 15 studies, revealing VTE rates between 0% and 9.6%, while a six-year analysis at the institution showed a low VTE rate of 0.76% among 393 patients receiving heparin.
  • The study concluded that administering 5000 units of subcutaneous heparin every 8 hours is effective in minimizing VTE and maintaining a comparable rate of surgical site hematoma, suggesting its routine use may be beneficial.
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  • The study investigates the prevalence of diabetic macular edema (DME) in type 2 diabetic patients with and without diabetic nephropathy (DN) by using optical coherence tomography (OCT).
  • Conducted over a year at Saveetha Medical College, the study included 120 patients—60 without nephropathy and 60 with nephropathy—assessing various health metrics, including blood sugar levels and kidney function.
  • Results indicated that a significantly higher percentage of patients in the nephropathy group had both a longer duration of diabetes and poorer HbA1c levels, with only 1.7% of patients without nephropathy developing DME compared to higher rates in the nephropathy group.
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Meditation is a self-regulatory process practiced primarily to reduce stress, manage emotions and mental health. The objective of this work is to study the information exchange between electrodes within and across the hemispheres during meditation using functional connectivity (FC) measures. We investigate the changes in the coherence between EEG electrode pairs during the meditation with open eyes practiced by long-term Brahmakumaris Rajyoga meditators and during listening to music by controls as the comparable task.

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Systemic lupus erythematosus (SLE) is a multifaceted autoimmune disorder, occasionally presenting with rare complications like lupus enteritis (LE) and intestinal pseudo-obstruction (IPO). We present a unique case of a 32-year-old woman with LE and IPO, complicated by invasive candidiasis, as an initial manifestation of SLE. The patient presented with a 15-day history of abdominal pain, vomiting, and poor oral intake, and was initially misdiagnosed with infective enterocolitis.

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Additive manufacturing is an expanding multidisciplinary field encompassing applications including medical devices, aerospace components, microfabrication strategies and artificial organs. Among additive manufacturing approaches, light-based printing technologies, including two-photon polymerization, projection micro stereolithography and volumetric printing, have garnered significant attention due to their speed, resolution or potential applications for biofabrication. Here we introduce dynamic interface printing, a new 3D printing approach that leverages an acoustically modulated, constrained air-liquid boundary to rapidly generate centimetre-scale 3D structures within tens of seconds.

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Background Oral squamous cell carcinoma (OSCC) is a highly prevalent cancer worldwide. Microbial infections, poor oral hygiene, and chronic viral infections such as human papillomavirus (HPV) contribute to its incidence. Capsaicin, known for its presence in chili peppers, has demonstrated potential antiproliferative effects in cancer cells.

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Background: Venous thromboembolism (VTE), comprising deep vein thrombosis (DVT) and pulmonary embolism (PE), poses a significant risk of morbidity and mortality in surgical patients, especially those undergoing head and neck cancer surgery with microvascular free flap reconstruction. These patients are at a heightened risk of VTE due to numerous patient and surgical risk factors. VTE chemoprophylaxis guidelines in these patients are limited due to a distinct paucity of research.

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Introduction Diabetic macular edema (DME) is the most common and vision-threatening complication in diabetic patients with diabetic retinopathy (DR), especially in those with Type 2 diabetes mellitus. Optical coherence tomography (OCT) is a reliable tool most commonly used for assessing macular morphology and provides quantitative information on the macula. OCT also examines the outer retinal layers, which can predict visual outcomes.

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Patients aged 65 years and older account for an increasing proportion of patients with traumatic brain injury (TBI). Older TBI patients experience increased morbidity and mortality compared to their younger counterparts. Our prior data demonstrated that by blocking α4 integrin, anti-CD49d antibody (aCD49d Ab) abrogates CD8 T-cell infiltration into the injured brain, improves survival, and attenuates neurocognitive deficits.

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We analyzed access barriers to anti-CD19+ chimeric antigen receptor T-cells (CART) for non-Hodgkin lymphoma (NHL) within a community-based transplant and cell therapy network registry. 357 intended recipients of FDA-approved anti-CD19+ CART were identified in the study period (2018 to 2022). Results showed that the median age at referral was 61 years, referral year was 2018 (4%), 2019 (14%), 2020 (18%), 2021 (26%), and 2022 (38%).

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The treatment setting influences acute myeloid leukemia (AML) outcomes. Most cancer patients receive care in the community, yet few studies have evaluated the effectiveness of clinical programs outside of academic or National Cancer Institute (NCI)-designated cancer centers. This was a multi-level, case-controlled study of real-world outcomes for initial AML treatment in a community-based network for 1,391 patients with AML between 2011 and 2018.

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  • There's a significant lack of critical knowledge that is slowing down efforts to address Buruli ulcer (BU), a neglected tropical disease.
  • A new human infection model for BU is being proposed to investigate how the disease interacts with the host and to test prevention and treatment options.
  • The authors have shared a preliminary protocol for this study, seeking input from the scientific community and stakeholders before refining it for official review by an institutional board.
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Two simple models - vaulting over stiff legs and rebounding over compliant legs - are employed to describe the mechanics of legged locomotion. It is agreed that compliant legs are necessary for describing running and that legs are compliant while walking. Despite this agreement, stiff legs continue to be employed to model walking.

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  • Chronic exposure to cocaine leads to lasting changes in the brain's genetic structure, particularly in the nucleus accumbens, which plays a key role in motivation and addiction.
  • After withdrawing from cocaine, the depletion of a specific histone variant (H2A.Z) occurs, resulting in increased gene expression linked to relapse behavior among certain neurons (D1 MSNs).
  • The study highlights how the chaperone ANP32E regulates H2A.Z removal, suggesting potential therapeutic targets for preventing the negative effects of cocaine on brain function and behavior.
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Postoperative vision loss is an unusual but serious side effect that can occur after nonocular surgeries, particularly those involving the heart or spine. Various causes, including ischemic optic neuropathy, central retinal artery occlusion, central retinal vein occlusion, and ischemic orbital compartment syndrome, can cause this condition. Here, we present a case of a 28-year-old male patient who underwent spine surgery for cervicodorsal spine injury and experienced sudden, painless vision loss in his left eye following the surgery.

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Background The leading cause of cancer-related deaths worldwide is lung cancer. Approximately 1.8 million new cases were diagnosed, and 1.

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  • The research investigates the co-utilization of HIV care, substance use (SU) treatment, and mental health services among women at risk for or living with HIV, highlighting the impact of a syndemic involving HIV, substance use, and mental illness.
  • Data from 2,559 women enrolled in the Women's Interagency HIV Study (WIHS) were analyzed to assess service utilization, revealing that while 84% of women with both HIV and current SU saw their HIV provider, only a small percentage engaged in alcohol (18%) and tobacco (8%) treatment.
  • The study concludes that despite high engagement in HIV care, there is a significant gap in the uptake of alcohol and tobacco treatment, emphasizing the need for integrated services that address
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  • Excitotoxicity and tau-mediated toxicities are key factors in neuronal death related to Alzheimer's disease (AD), with issues like glutamate levels being critical.
  • *The main glutamate transporter, EAAT2 (GLT-1), is deficient in AD brains, leading to cell death from excitotoxicity, while tau protein buildup correlates with cognitive decline.
  • *Research using mouse models revealed that GLT-1 deficiency affects pathways linked to neuronal survival, while tau mutations disrupt endocytic pathways and mitochondria, highlighting potential therapeutic targets.*
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  • The study aimed to link the histopathologic grade of LI-RADS 5 hepatocellular carcinoma (HCC) from preablation needle biopsies to outcomes like local tumor control and overall survival post-thermal ablation.
  • It involved 133 adult patients with confirmed LI-RADS 5 HCC, finding no difference in local tumor control rate, but poorly differentiated tumors showed significantly worse intrahepatic progression-free survival and lower overall survival compared to better-differentiated ones.
  • The results suggest that patients with poorly differentiated LI-RADS 5 HCC face greater challenges in preventing tumor progression after thermal ablation compared to those with well- or moderately differentiated tumors.
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Background: India is facing triple epidemic of Non communicable diseases (NCDs) including high body mass index (BMI), high blood pressure and high blood glucose, contributing to more than half of deaths of all mortality, however, information in different demographics is limited, especially, in India. The aim of the study is to compare the prevalence of overweight, obesity, hypertension, and diabetes, along with the occurrence of multi-morbidity, across gender-specific populations in rural, suburban, and urban regions of India.

Methods: This was a cross-sectional, population-based study including adults aged 20 and above in rural, suburban, and urban areas near Coimbatore, India.

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Background: Tiny arteriovenous (AV) shunts of 10-150 µm (0.01-0.15 mm) are documented in the hands and feet.

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