Anthracyclines without Cardiotoxicity? 'PNAS 18 June 2020
Dr. Baliga's 'Got Knowledge Doc?' PODKASTS
Release Date: 01/19/2021
Dr. Baliga's 'Got Knowledge Doc?' PODKASTS
This study identifies the Median Raphe Nucleus (MRN) 🧠 as a behavioral switchboard 🔄, regulating perseverance 🛑, exploration 🚀, and disengagement ❌ through distinct neuron types. GABAergic neurons 🟢 promote perseverance, Glutamatergic neurons 🔵 drive exploration, and Serotonergic neurons 🟠 maintain engagement. Using optogenetics 💡, fiber photometry 📈, and circuit tracing 🔗, researchers demonstrated how MRN integrates signals from the lateral hypothalamus (LHA) 🌟 and lateral habenula (LHb) ⚡ to control decision-making. These findings have clinical...
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🔬 Study Overview: A meta-analysis comparing alternative LDL cholesterol-lowering strategies (moderate-intensity statins + ezetimibe) vs high-intensity statins in patients with ASCVD. 📊 Key Findings: ✅ No significant difference in 3-year cardiovascular events (7.5% vs 7.7%) 📉 Lower LDL cholesterol in the alternative strategy (64.8 vs 68.5 mg/dL) 🩸 Reduced risk of new-onset diabetes (10.2% vs 11.9%) 💊 Fewer therapy discontinuations due to intolerance (4.0% vs 6.7%) ⚖️ Conclusion: The alternative strategy offers comparable efficacy with better tolerability and...
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🦴 USPSTF Osteoporosis Screening Summary 📋 🔍 Why? Prevent fractures, disability, and mortality. 👩⚕️ Who? Women 65+ ✅, at-risk postmenopausal women ✅, men ❌ (insufficient evidence). 🩻 How? DXA scan (bone density test) is the gold standard. ⚠️ Risk Factors: Age, low weight, family history, smoking, alcohol, medications. ✅ Benefits: Reduces fracture risk with moderate evidence. ⚠️ Harms: Minimal risks, rare side effects from treatment. 📌 Takeaway: Screen women 65+ and younger high-risk women!
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🫀 Cardiac CT Calcium Score: Key Insights 🔬📊 🔍 What is CAC? ✅ Measures calcified plaque in coronary arteries via cardiac CT 📸 ✅ Higher CAC = Higher cardiovascular risk ⚠️ ✅ Agatston Score: 0 (None) → >400 (Severe Atherosclerosis) 📊 Clinical Impact: ✅ Strong predictor of ASCVD events (MI, stroke, CHD death) 📉 ✅ MESA Study: CAC >300 → 10-year CHD risk: 13-25% ✅ CAC = 0 → Low risk, even for some statin-eligible patients 🚀 🎯 Guidelines & Utility: 📢 Used for risk stratification in intermediate-risk patients (7.5%-20%...
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Tirzepatide & Weight Maintenance 💊📉 A phase 3 clinical trial (SURMOUNT-4) showed that continued use of tirzepatide helps maintain weight loss in adults with obesity. Participants on tirzepatide lost an extra 5.5%, while those on placebo regained 14%. ✅ 89.5% maintained at least 80% of their weight loss, compared to 16.6% on placebo. Common side effects were mild gastrointestinal issues 🤢. Stopping treatment led to significant weight regain, reinforcing the need for long-term therapy. 🔬
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🫀 CAUGHT-CAD Trial Summary 🔬 🔍 Objective: Investigated whether CAC scoring combined with a prevention strategy slows plaque progression in intermediate-risk patients with a family history of CAD. 📊 Key Findings: ✅ LDL Reduction: -51 mg/dL (CAC group) vs. -2 mg/dL (Usual Care) 📉 ✅ Slower Plaque Progression: +15.4 mm³ vs. +24.9 mm³ (p=0.009) 🏥 ✅ Less Noncalcified Plaque Growth: +5.6 mm³ vs. +15.7 mm³ (p=0.002) 🔬 ✅ Regression in High-Risk Plaque (Fibrofatty/Necrotic Core): -0.8 mm³ vs. +4.5 mm³ (p=0.02) 🚀 🎯 Clinical Impact: CAC-informed strategies...
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🩸 Bleeding & Cancer Risk in AF Patients on Anticoagulants 🏥 🔎 Study Goal: Investigate the link between bleeding after anticoagulation for atrial fibrillation (AF) and new cancer diagnoses. 📊 Findings: ✅ Bleeding 4X increases the risk of cancer diagnosis (HR: 4.0). 🔴 GI Bleeding → 15.4X risk of GI Cancer 🟠 GU Bleeding → 11.8X risk of GU Cancer 🟡 Respiratory Bleeding → 10.1X risk of Lung Cancer ⏳ Median time to cancer diagnosis: 45 days. 🚑 Earlier-stage cancers detected after bleeding (Stage 4: 27.6% vs. 31.3%). 💡 Clinical Takeaways:...
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The RENOVE trial compared reduced-dose versus full-dose DOACs for extended venous thromboembolism VTE treatment in high-risk patients. While the reduced dose cut major bleeding risk by 39% 🚨, it did not meet non-inferiority criteria for preventing VTE recurrence 🔄.
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Laozi, a legendary Chinese philosopher and author of the Tao Te Ching, is regarded as the founder of Taoism. His teachings emphasize living in harmony with the Tao (the Way), advocating simplicity, humility, and wu wei (effortless action) for a balanced life.
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This study explores how environmental exposures (exposome) 🌍 and genetics 🧬 contribute to aging ⏳ and mortality ⚰️. Using UK Biobank data 📊, researchers found that the exposome explains 17% of mortality risk, while genetics accounts for only 2%. Smoking 🚬, socioeconomic status 💰, and physical activity 🏃♂️ are major environmental influences, whereas genetics plays a stronger role in dementia 🧠 and cancers 🦠. The findings highlight the need for public health policies 🏥 targeting modifiable lifestyle factors over genetic interventions.
info_outline- Uncoupling DNA damage from chromatin damage to detoxify doxorubicin https://www.pnas.org/content/117/26/15182
- Jocelyn Kaiser. New forms of ‘red devil’ cancer drug could spare hearts https://www.sciencemag.org/news/2020/07/new-forms-red-devil-cancer-drug-could-spare-hearts