1.Impacts of heat on sleep quality among heat-exposed workers: a systematic review
Maarthi RAJA ; Vidhya VENUGOPAL ; D. C. MATHANGI ; Suvarna Jyothi KANTIPUDI ; K. Mahesh KUMAR ; Somnath PANDA ; Latha Perumal KAMALAKKANNAN
Annals of Occupational and Environmental Medicine 2026;38(1):e3-
Climate change is intensifying occupational heat exposure, posing risks not only for heat-related illness but also for sleep, which is essential for recovery, safety, and productivity. Heat-exposed workers are highly vulnerable due to prolonged exposure, limited access to cooling, and poor housing. This systematic review aimed to synthesise global evidence on how occupational heat exposure affects sleep quality among workers across different occupations and settings. A systematic review was conducted following Synthesis without Meta-Analysis (SWiM) guidelines. PubMed, Scopus, and Google Scholar were searched (2000–2025) for studies involving adult workers (≥18 years) reporting both heat exposure and sleep outcomes. The review was registered with PROSPERO (ID: CRD420251125735). Of 7,108 records screened, 11 studies met the inclusion criteria. Studies spanned Asia, Australia, North America, and global cohorts. Heat exposure consistently impaired sleep quality and duration. Using Pittsburgh Sleep Quality Index, Actigraphy, and self-reports, common complaints included difficulty falling asleep (64%), restlessness (54%), non-restorative sleep (54%), night sweats (36%), and reduced total sleep time (45%). Night-time temperatures above 25°C and high workplace wet bulb globe temperature values were strongly linked with reduced sleep efficiency and delayed sleep onset. Vulnerable groups included shift workers, petrochemical and steel labourers, women, older adults, and low-income workers in urban heat islands and poorly ventilated housing. Occupational heat exposure disrupts sleep, compounding daytime strain and creating a dual burden for workers. Integrating sleep into heat stress management through cooling interventions, better housing, and revised work–rest schedules is critical for workers well-being in a warming climate.
2.Clinical and Radiological Predictors of Surgical Ease in Interlaminar Endoscopic Lumbar Decompression: A Prospective Observational Study
Vemula Venkata Ramesh CHANDRA ; Papasani Anil Kumar REDDY ; Middina MAHESH ; Kanduri PRITHVI ; Chigurupalli Chandra SEKHAR ; Bodapati Chandramouliswara PRASAD
Journal of Minimally Invasive Spine Surgery and Technique 2026;11(1):14-21
Objective:
Interlaminar endoscopic lumbar decompression is an increasingly used minimally invasive technique for treating lumbar disc herniation and lumbar spinal canal stenosis. However, technical difficulty varies substantially across cases because of anatomical and patient-related factors. This prospective study evaluated clinical and radiological predictors of surgical ease using an objective Endoscopic Ease Index (EEI).
Methods:
This prospective observational study included 122 patients who underwent interlaminar endoscopic lumbar decompression between January 2021 and May 2025. Preoperative clinical data and magnetic resonance imaging morphometric parameters—including interlaminar window dimensions, ligamentum flavum (LF) thickness, facet hypertrophy, and canal stenosis—were analyzed. Intraoperative difficulty was quantified using the EEI, which incorporates operative time, docking time, bleeding score, field clarity, and surgeon-rated difficulty. Predictors of difficult surgery (defined as the upper EEI tertile) were examined using multivariable logistic regression.
Results:
Of 122 cases, 41 (33.6%) were classified as difficult. Difficult cases had significantly narrower interlaminar windows (10.8±1.9 mm vs. 13.6±2.4 mm, p<0.001), greater LF thickness (5.0±0.9 mm vs. 3.6±0.7 mm, p<0.001), and a higher prevalence of facet hypertrophy (58.5% vs. 27.1%, p=0.004). In the multivariable model, 3 variables independently predicted difficult surgery: LF thickness >4 mm (odds ratio [OR], 5.22; p<0.001), interlaminar height <11 mm (OR, 4.48; p=0.001), and facet hypertrophy ≥ grade 2 (OR, 3.27; p=0.02). The predictive model demonstrated excellent discrimination (area under the receiver operating characteristic curve, 0.87). Despite greater operative complexity, postoperative improvements in pain (visual analogue scale) and disability (Oswestry Disability Index) were comparable between groups.
Conclusion
LF hypertrophy, reduced interlaminar height, and facet hypertrophy independently predict greater technical difficulty during interlaminar endoscopic lumbar decompression. Preoperative identification of these morphometric parameters may improve surgical planning and help optimize outcomes.
3.Effect of gestational diabetes mellitus and its management on the histological and histomorphometric structure of umbilical cord:a comparative study
Seema Valsalan ENNAZHIYIL ; Akshara Venmalassery RAJEEV ; Mahesh Kumar DAMODARAN ; Tintu Thottiyil SUKUMARAN ; Chitra SRINIVASAN ; Ramakrishnan Panicker KUNNATHU
Anatomy & Cell Biology 2025;58(1):22-34
The umbilical cord lacks vasavasorum and is prone for hypoxic injuries. Gestational diabetes mellitus (GDM) causes structural changes with in umbilical cord blood vessels. Knowledge of which would be helpful for the gynecologist and obstetricians to assess the prognosis and prevent the complications. The present study was concentrated from December 2016 to December 2019 on 50 normal and 56 GDM umbilical cords. GDM group included 23 GDM mothers managed by diet (GDM-Diet) and 33 GDM mothers managed by drugs (GDM-Drug). Placentas along with the attached umbilical cords were collected and stored in 10% formaline. Tissue processing, slide preparation and stainings were done using standard protocols.A significant reduction was observed in the number of Hoboken nodules of umbilical arteries of GDM-Diet. Reduction of myofibroblasts with an increase in the empty spaces was observed in the Wharton’s jelly of both GDM cases. Similarly, smooth muscle disintegration and migration of smooth muscles to intima was significantly higher in GDM umbilical arteries and veins than normal umbilical vessels. The total wall thickness and tunica media was significantly thicker in the umbilical arteries of GDM-Drug group only. The umbilical venous lumen was found significantly wider in GDM groups compared to normal. The elastin fibers were significantly found reduced in the tunics of umbilical arteries and veins in GDM. However, a significant difference in these parameters was not observed between the GDM-Diet and GDM-Drug groups except for total wall and tunica media thickness of umbilical arteries.
4.Effect of gestational diabetes mellitus and its management on the histological and histomorphometric structure of umbilical cord:a comparative study
Seema Valsalan ENNAZHIYIL ; Akshara Venmalassery RAJEEV ; Mahesh Kumar DAMODARAN ; Tintu Thottiyil SUKUMARAN ; Chitra SRINIVASAN ; Ramakrishnan Panicker KUNNATHU
Anatomy & Cell Biology 2025;58(1):22-34
The umbilical cord lacks vasavasorum and is prone for hypoxic injuries. Gestational diabetes mellitus (GDM) causes structural changes with in umbilical cord blood vessels. Knowledge of which would be helpful for the gynecologist and obstetricians to assess the prognosis and prevent the complications. The present study was concentrated from December 2016 to December 2019 on 50 normal and 56 GDM umbilical cords. GDM group included 23 GDM mothers managed by diet (GDM-Diet) and 33 GDM mothers managed by drugs (GDM-Drug). Placentas along with the attached umbilical cords were collected and stored in 10% formaline. Tissue processing, slide preparation and stainings were done using standard protocols.A significant reduction was observed in the number of Hoboken nodules of umbilical arteries of GDM-Diet. Reduction of myofibroblasts with an increase in the empty spaces was observed in the Wharton’s jelly of both GDM cases. Similarly, smooth muscle disintegration and migration of smooth muscles to intima was significantly higher in GDM umbilical arteries and veins than normal umbilical vessels. The total wall thickness and tunica media was significantly thicker in the umbilical arteries of GDM-Drug group only. The umbilical venous lumen was found significantly wider in GDM groups compared to normal. The elastin fibers were significantly found reduced in the tunics of umbilical arteries and veins in GDM. However, a significant difference in these parameters was not observed between the GDM-Diet and GDM-Drug groups except for total wall and tunica media thickness of umbilical arteries.
5.Effect of gestational diabetes mellitus and its management on the histological and histomorphometric structure of umbilical cord:a comparative study
Seema Valsalan ENNAZHIYIL ; Akshara Venmalassery RAJEEV ; Mahesh Kumar DAMODARAN ; Tintu Thottiyil SUKUMARAN ; Chitra SRINIVASAN ; Ramakrishnan Panicker KUNNATHU
Anatomy & Cell Biology 2025;58(1):22-34
The umbilical cord lacks vasavasorum and is prone for hypoxic injuries. Gestational diabetes mellitus (GDM) causes structural changes with in umbilical cord blood vessels. Knowledge of which would be helpful for the gynecologist and obstetricians to assess the prognosis and prevent the complications. The present study was concentrated from December 2016 to December 2019 on 50 normal and 56 GDM umbilical cords. GDM group included 23 GDM mothers managed by diet (GDM-Diet) and 33 GDM mothers managed by drugs (GDM-Drug). Placentas along with the attached umbilical cords were collected and stored in 10% formaline. Tissue processing, slide preparation and stainings were done using standard protocols.A significant reduction was observed in the number of Hoboken nodules of umbilical arteries of GDM-Diet. Reduction of myofibroblasts with an increase in the empty spaces was observed in the Wharton’s jelly of both GDM cases. Similarly, smooth muscle disintegration and migration of smooth muscles to intima was significantly higher in GDM umbilical arteries and veins than normal umbilical vessels. The total wall thickness and tunica media was significantly thicker in the umbilical arteries of GDM-Drug group only. The umbilical venous lumen was found significantly wider in GDM groups compared to normal. The elastin fibers were significantly found reduced in the tunics of umbilical arteries and veins in GDM. However, a significant difference in these parameters was not observed between the GDM-Diet and GDM-Drug groups except for total wall and tunica media thickness of umbilical arteries.
6.Effect of gestational diabetes mellitus and its management on the histological and histomorphometric structure of umbilical cord:a comparative study
Seema Valsalan ENNAZHIYIL ; Akshara Venmalassery RAJEEV ; Mahesh Kumar DAMODARAN ; Tintu Thottiyil SUKUMARAN ; Chitra SRINIVASAN ; Ramakrishnan Panicker KUNNATHU
Anatomy & Cell Biology 2025;58(1):22-34
The umbilical cord lacks vasavasorum and is prone for hypoxic injuries. Gestational diabetes mellitus (GDM) causes structural changes with in umbilical cord blood vessels. Knowledge of which would be helpful for the gynecologist and obstetricians to assess the prognosis and prevent the complications. The present study was concentrated from December 2016 to December 2019 on 50 normal and 56 GDM umbilical cords. GDM group included 23 GDM mothers managed by diet (GDM-Diet) and 33 GDM mothers managed by drugs (GDM-Drug). Placentas along with the attached umbilical cords were collected and stored in 10% formaline. Tissue processing, slide preparation and stainings were done using standard protocols.A significant reduction was observed in the number of Hoboken nodules of umbilical arteries of GDM-Diet. Reduction of myofibroblasts with an increase in the empty spaces was observed in the Wharton’s jelly of both GDM cases. Similarly, smooth muscle disintegration and migration of smooth muscles to intima was significantly higher in GDM umbilical arteries and veins than normal umbilical vessels. The total wall thickness and tunica media was significantly thicker in the umbilical arteries of GDM-Drug group only. The umbilical venous lumen was found significantly wider in GDM groups compared to normal. The elastin fibers were significantly found reduced in the tunics of umbilical arteries and veins in GDM. However, a significant difference in these parameters was not observed between the GDM-Diet and GDM-Drug groups except for total wall and tunica media thickness of umbilical arteries.
7.Effect of gestational diabetes mellitus and its management on the histological and histomorphometric structure of umbilical cord:a comparative study
Seema Valsalan ENNAZHIYIL ; Akshara Venmalassery RAJEEV ; Mahesh Kumar DAMODARAN ; Tintu Thottiyil SUKUMARAN ; Chitra SRINIVASAN ; Ramakrishnan Panicker KUNNATHU
Anatomy & Cell Biology 2025;58(1):22-34
The umbilical cord lacks vasavasorum and is prone for hypoxic injuries. Gestational diabetes mellitus (GDM) causes structural changes with in umbilical cord blood vessels. Knowledge of which would be helpful for the gynecologist and obstetricians to assess the prognosis and prevent the complications. The present study was concentrated from December 2016 to December 2019 on 50 normal and 56 GDM umbilical cords. GDM group included 23 GDM mothers managed by diet (GDM-Diet) and 33 GDM mothers managed by drugs (GDM-Drug). Placentas along with the attached umbilical cords were collected and stored in 10% formaline. Tissue processing, slide preparation and stainings were done using standard protocols.A significant reduction was observed in the number of Hoboken nodules of umbilical arteries of GDM-Diet. Reduction of myofibroblasts with an increase in the empty spaces was observed in the Wharton’s jelly of both GDM cases. Similarly, smooth muscle disintegration and migration of smooth muscles to intima was significantly higher in GDM umbilical arteries and veins than normal umbilical vessels. The total wall thickness and tunica media was significantly thicker in the umbilical arteries of GDM-Drug group only. The umbilical venous lumen was found significantly wider in GDM groups compared to normal. The elastin fibers were significantly found reduced in the tunics of umbilical arteries and veins in GDM. However, a significant difference in these parameters was not observed between the GDM-Diet and GDM-Drug groups except for total wall and tunica media thickness of umbilical arteries.
8.Polygenic Risk Score for Cardiovascular Diseases in Artificial Intelligence Paradigm: A Review
Narendra N KHANNA ; Manasvi SINGH ; Mahesh MAINDARKAR ; Ashish KUMAR ; Amer M. JOHRI ; Laura MENTELLA ; John R LAIRD ; Kosmas I. PARASKEVAS ; Zoltan RUZSA ; Narpinder SINGH ; Mannudeep K. KALRA ; Jose Fernandes E. FERNANDES ; Seemant CHATURVEDI ; Andrew NICOLAIDES ; Vijay RATHORE ; Inder SINGH ; Jagjit S. TEJI ; Mostafa AL-MAINI ; Esma R. ISENOVIC ; Vijay VISWANATHAN ; Puneet KHANNA ; Mostafa M. FOUDA ; Luca SABA ; Jasjit S. SURI
Journal of Korean Medical Science 2023;38(46):e395-
Cardiovascular disease (CVD) related mortality and morbidity heavily strain society. The relationship between external risk factors and our genetics have not been well established.It is widely acknowledged that environmental influence and individual behaviours play a significant role in CVD vulnerability, leading to the development of polygenic risk scores (PRS). We employed the PRISMA search method to locate pertinent research and literature to extensively review artificial intelligence (AI)-based PRS models for CVD risk prediction.Furthermore, we analyzed and compared conventional vs. AI-based solutions for PRS. We summarized the recent advances in our understanding of the use of AI-based PRS for risk prediction of CVD. Our study proposes three hypotheses: i) Multiple genetic variations and risk factors can be incorporated into AI-based PRS to improve the accuracy of CVD risk predicting. ii) AI-based PRS for CVD circumvents the drawbacks of conventional PRS calculators by incorporating a larger variety of genetic and non-genetic components, allowing for more precise and individualised risk estimations. iii) Using AI approaches, it is possible to significantly reduce the dimensionality of huge genomic datasets, resulting in more accurate and effective disease risk prediction models. Our study highlighted that the AI-PRS model outperformed traditional PRS calculators in predicting CVD risk. Furthermore, using AI-based methods to calculate PRS may increase the precision of risk predictions for CVD and have significant ramifications for individualized prevention and treatment plans.
9.A prospective study of fully covered self-expandable metal stents for refractory benign pancreatic duct strictures
Bhavik Bharat SHAH ; Gajanan Ashokrao RODGE ; Usha GOENKA ; Shivaraj AFZALPURKAR ; Mahesh Kumar GOENKA
Clinical Endoscopy 2022;55(6):793-800
Background/Aims:
Fully covered self-expanding metal stents (FCSEMSs) are a relatively novel option for treating painful main pancreatic duct refractory strictures in patients with chronic pancreatitis. Herein, we aimed to assess the efficacy, feasibility, and safety of FCSEMSs in this patient group.
Methods:
This prospective single-center study included patients who underwent endoscopic retrograde pancreatography with FCSEMS placement. The primary endpoints were the technical and clinical success rates. A reduction in visual analog scale pain score of >50% compared with that before stent placement was defined as clinical success. Secondary endpoints were resolution of pancreatic strictures on fluoroscopy during endoscopic retrograde pancreatography and the development of stent-related adverse events.
Results:
Thirty-six patients were included in the analysis. The technical success rate was 100% (n=36) and the clinical success rate was 86.1% (n=31). There was a significant increase in stricture diameter from 1.7 mm to 3.5 mm (p<0.001) after stent removal. The mean visual analog scale pain score showed statistically significant improvement. At 19 months of follow-up, 55.6% of the patients were asymptomatic. Stent migration (16.7%), intolerable abdominal pain (8.3%), development of de novo strictures (8.3%), and mild pancreatitis (2.8%) were the most common adverse events.
Conclusions
FCSEMS placement showed good technical and clinical success rates for achieving pain relief in patients with refractory main pancreatic duct strictures.
10.Injuries in survivors of elephant attack: Report of three cases.
Pradeep Kumar SINGH ; S Manwar ALI ; Mahesh SETHI ; Das Birendra MANOHAR
Chinese Journal of Traumatology 2021;24(6):394-396
Human-elephant conflict (HEC) in India is becoming a growing health problem causing many fatalities every year. Elephants produce injuries by trampling, stomping, squeezing, tossing in the air, or crushing/targeting the head and chest commonly. The adult elephants are most aggressive in their mating season, leading to maximum incidences of HECs in this period. These attacks are mostly unprovoked, though most HECs are provoked. In this case series, the authors described the injuries sustained by three survivors in a short span of one month due to the sudden and unprovoked elephant attack. All the injuries were mild to moderate in severity and involved the chest in common. Timely rescue and prompt initiation of treatment were pivotal in their survival. The authors also want to create awareness about the mating season of elephants to minimize these unfortunate events in the future.
Animals
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Elephants
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Humans
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India
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Seasons
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Survivors

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