LIVIVO - The Search Portal for Life Sciences

zur deutschen Oberfläche wechseln
Advanced search

Search results

Result 1 - 10 of total 104

Search options

  1. Article ; Online: Visible Light-Mediated Carbamoylation of

    Singh, Tavinder / Upreti, Ganesh Chandra / Arora, Shivani / Chauhan, Himanshu / Singh, Anand

    The Journal of organic chemistry

    2023  Volume 88, Issue 5, Page(s) 2784–2791

    Abstract: We report a photocatalytic approach for the installation of the amide moiety ... ...

    Abstract We report a photocatalytic approach for the installation of the amide moiety onto
    Language English
    Publishing date 2023-02-15
    Publishing country United States
    Document type Journal Article
    ZDB-ID 123490-0
    ISSN 1520-6904 ; 0022-3263
    ISSN (online) 1520-6904
    ISSN 0022-3263
    DOI 10.1021/acs.joc.2c02394
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  2. Article ; Online: Genetic Variants Associated with the Risk of Stroke in Sickle Cell Anemia: Systematic Review and Meta-Analysis.

    Kumari, Aradhana / Chauhan, Ganesh / Chaudhuri, Partha Kumar / Kumari, Sushma / Prasad, Anupa

    Hemoglobin

    2024  Volume 48, Issue 2, Page(s) 101–112

    Abstract: Sickle cell anemia (SCA) is the most common cause of stroke in children. As it is a rare disease, studies investigating the association with complications like stroke in SCD have small sample sizes. Here, we performed a systematic review and meta- ... ...

    Abstract Sickle cell anemia (SCA) is the most common cause of stroke in children. As it is a rare disease, studies investigating the association with complications like stroke in SCD have small sample sizes. Here, we performed a systematic review and meta-analysis of the studies exploring an association of genetic variants with stroke to get a better indication of their association with stroke. PubMed and Google Scholar were searched to identify studies that had performed an association analysis of genetic variants for the risk of stroke in SCA patients. After screening of eligible studies, summary statistics of association analysis with stroke and other general information were extracted. Meta-analysis was performed using the fixed effect method on the tool METAL and forest plots were plotted using the R program. The random effect model was performed as a sensitivity analysis for loci where significant heterogeneity was observed. 407 studies were identified using the search term and after screening 37 studies that cumulatively analyzed 11,373 SCA patients were included. These 37 studies included a total of 2,222 SCA patients with stroke, predominantly included individuals of African ancestry (N = 16). Three of these studies performed whole exome sequencing while 35 performed single nucleotide-based genotyping. Though the studies reported association with 132 loci, meta-analyses could be performed only for 12 loci that had data from two or more studies. After meta-analysis we observed that four loci were significantly associated with risk for stroke: -α3.7 kb
    MeSH term(s) Anemia, Sickle Cell/genetics ; Anemia, Sickle Cell/complications ; Humans ; Stroke/genetics ; Stroke/epidemiology ; Stroke/etiology ; Genetic Predisposition to Disease ; Genetic Variation ; Polymorphism, Single Nucleotide ; Risk Factors
    Language English
    Publishing date 2024-04-18
    Publishing country England
    Document type Journal Article ; Systematic Review ; Meta-Analysis
    ZDB-ID 750615-6
    ISSN 1532-432X ; 0363-0269
    ISSN (online) 1532-432X
    ISSN 0363-0269
    DOI 10.1080/03630269.2024.2340685
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  3. Article ; Online: Visible-light mediated, oxygen-promoted regioselective cross-dehydrogenative coupling of coumarins and dimethylanilines.

    Singh, Tavinder / Upreti, Ganesh Chandra / Arora, Shivani / Chauhan, Himanshu / Singh, Anand

    Organic & biomolecular chemistry

    2023  Volume 21, Issue 33, Page(s) 6671–6674

    Abstract: Herein, we report a regioselective, photocatalytic C3 α-aminoalkylation of ... ...

    Abstract Herein, we report a regioselective, photocatalytic C3 α-aminoalkylation of coumarins
    Language English
    Publishing date 2023-08-23
    Publishing country England
    Document type Journal Article
    ZDB-ID 2097583-1
    ISSN 1477-0539 ; 1477-0520
    ISSN (online) 1477-0539
    ISSN 1477-0520
    DOI 10.1039/d3ob00923h
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  4. Article: Management of Acute Coronary Syndrome With a Bleeding Intra-Tumoral Hepatocellular Carcinoma: A Case Report.

    Manudhane, Ganesh / Mehta, Ria / Chauhan, Shamshersingh / Kumbhar, Maharudra

    Cureus

    2022  Volume 14, Issue 8, Page(s) e27653

    Abstract: This case report presents the management of a 69-year-old gentleman with acute coronary syndrome in the setting of an incidentally detected hepatocellular carcinoma with intra-tumoral bleed. Initially, the patient presented with fever, cough, and sudden ... ...

    Abstract This case report presents the management of a 69-year-old gentleman with acute coronary syndrome in the setting of an incidentally detected hepatocellular carcinoma with intra-tumoral bleed. Initially, the patient presented with fever, cough, and sudden onset of dyspnea on rest accompanied by angina, after which he was diagnosed with non-ST segment elevated myocardial infarction complicated with congestive cardiac failure. His laboratory and radiological investigations were suggestive of a possible infective etiology which, in an era of COVID-19, was investigated further with a high-resolution CT scan of the chest, which was suggestive of features of pulmonary edema along with an incidental discovery of liver lesions on the abdominal cuts. A further workup with a dedicated triple-phase computed tomography scan abdomen demonstrated features of undiagnosed hepatocellular cancer with intra-tumoral bleeding. Therefore, a mesenteric celiac angiogram followed by trans arterial bland embolization of the bleeding vessel was performed. In the same setting, for the simultaneous management of the acute coronary syndrome, coronary angiography performed revealed a triple vessel disease which was immediately followed by a percutaneous transluminal coronary angioplasty.
    Language English
    Publishing date 2022-08-03
    Publishing country United States
    Document type Case Reports
    ZDB-ID 2747273-5
    ISSN 2168-8184
    ISSN 2168-8184
    DOI 10.7759/cureus.27653
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  5. Article ; Online: Numerical Methodology to Evaluate Trackability and Pushability of PTCA Balloon Catheter.

    Sirivella, Martin L / Rahinj, Ganesh B / Chauhan, Harshit S / Satyanarayana, Menta V / Ramanan, Laxminarayanan

    Cardiovascular engineering and technology

    2023  Volume 14, Issue 2, Page(s) 315–330

    Abstract: Purpose: During percutaneous coronary intervention (PCI), the ability to navigate a catheter without causing injury to the vessel and damage to the device is crucial outcome of the procedure. This study aimed to develop a numerical model to analyse the ... ...

    Abstract Purpose: During percutaneous coronary intervention (PCI), the ability to navigate a catheter without causing injury to the vessel and damage to the device is crucial outcome of the procedure. This study aimed to develop a numerical model to analyse the percutaneous transluminal coronary angioplasty (PTCA) catheter navigation in coronary vessels.
    Methods: Trackability and pushability are two major parameters used to characterize the navigation of PTCA balloon catheters, and they are influenced by vessel tortuosity, contact interactions and catheter design. In the current study, finite element analysis model is presented to evaluate trackability and pushability considering two different vessel geometries. Impact of contact interactions among catheter, guidewire, and vessel were studied to validate the numerical model with in vitro test data. Further, a parametric study was conducted to understand the influence of distal shaft, and proximal shaft outer diameter.
    Results: Obtained results suggest that contact interaction and co-efficient of friction between guidewire and catheter are critical parameters to obtain numerical results comparable to experimental data. Results from the parametric study predicted strong positive correlation of distal shaft diameter on pushability, and weak correlation on trackability force. Furthermore, parametric variation in proximal shaft diameter has strong positive correlation on trackability force and strong negative correlation on pushability.
    Conclusion: Numerical methodology presented in this study is a preliminary attempt to simulate the behavior of PTCA balloon catheter navigation. This methodology will be helpful in the design and optimization of PTCA balloon catheter and similar devices with improved deliverability.
    MeSH term(s) Humans ; Angioplasty, Balloon, Coronary ; Coronary Disease ; Percutaneous Coronary Intervention ; Coronary Vessels ; Catheters
    Language English
    Publishing date 2023-01-30
    Publishing country United States
    Document type Journal Article
    ZDB-ID 2543111-0
    ISSN 1869-4098 ; 1869-408X
    ISSN (online) 1869-4098
    ISSN 1869-408X
    DOI 10.1007/s13239-022-00653-z
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  6. Article ; Online: Epidemiological Predictors of Financial Toxicity in Surgical Burn Injuries: A Multicenter, Longitudinal, Cohort Study.

    Sana, Hamaiyal / Ehsan, Anam N / Saha, Shivangi / Hathi, Preet / Malapati, Sri Harshini / Katave, Coral / Ganesh, Praveen / Huang, Chuan-Chin / Vengadassalapathy, Srinivasan / Sabapathy, S Raja / Kumar, Neeraj / Chauhan, Shashank / Singhal, Maneesh / Ranganathan, Kavitha

    Annals of plastic surgery

    2024  Volume 92, Issue 4S Suppl 2, Page(s) S279–S283

    Abstract: Background: Burns constitute a major global health challenge, causing over 11 million injuries and 300,000 deaths annually and surpassing the economic burden of cervical cancer and HIV combined. Despite this, patient-level financial consequences of burn ...

    Abstract Background: Burns constitute a major global health challenge, causing over 11 million injuries and 300,000 deaths annually and surpassing the economic burden of cervical cancer and HIV combined. Despite this, patient-level financial consequences of burn injuries remain poorly quantified, with a significant gap in data from low- and middle-income countries. In this study, we evaluate financial toxicity in burn patients.
    Methods: A prospective, multicenter cohort study was conducted across two tertiary care hospitals in India, assessing 123 adult surgical in-patients undergoing operative interventions for burn injuries. Patient sociodemographic, clinical, and financial data were collected through surveys and electronic records during hospitalization and at 1, 3, and 6 months postoperatively. Out-of-pocket costs (OOPCs) for surgical burn treatment were evaluated during hospitalization. Longitudinal changes in income, employment status, and affordability of basic subsistence needs were assessed at the 1-, 3-, and 6-month postoperative time point. Degree of financial toxicity was calculated using a combination of the metrics catastrophic health expenditure and financial hardship. Development of financial toxicity was compared by sociodemographic and clinical characteristics using logistic regression models.
    Results: Of the cohort, 60% experienced financial toxicity. Median OOPCs was US$555.32 with the majority of OOPCs stemming from direct nonmedical costs (US$318.45). Cost of initial hospitalization exceeded monthly annual income by 80%. Following surgical burn care, income decreased by US$318.18 within 6 months, accompanied by a 53% increase in unemployment rates. At least 40% of the cohort consistently reported inability to afford basic subsistence needs within the 6-month perioperative period. Significant predictors of developing financial toxicity included male gender (odds ratio, 4.17; 95% confidence interval, 1.25-14.29; P = 0.02) and hospital stays exceeding 20 days (odds ratio, 11.17; 95% confidence interval, 2.11-59.22; P ≤ 0.01).
    Conclusions: Surgical treatment for burn injuries is associated with substantial financial toxicity. National and local policies must expand their scope beyond direct medical costs to address direct nonmedical and indirect costs. These include burn care insurance, teleconsultation follow-ups, hospital-affiliated subsidized lodging, and resources for occupational support and rehabilitation. These measures are crucial to alleviate the financial burden of burn care, particularly during the perioperative period.
    MeSH term(s) Adult ; Humans ; Male ; Burns/epidemiology ; Burns/surgery ; Cohort Studies ; Cost of Illness ; Financial Stress ; Intraoperative Complications ; Prospective Studies ; Female
    Language English
    Publishing date 2024-03-14
    Publishing country United States
    Document type Multicenter Study ; Journal Article
    ZDB-ID 423835-7
    ISSN 1536-3708 ; 0148-7043
    ISSN (online) 1536-3708
    ISSN 0148-7043
    DOI 10.1097/SAP.0000000000003853
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  7. Article ; Online: Sciatic Nerve and Lumbar Plexus Block for Below Knee Amputation- Newer Approach for Better Haemodynamic Stability and Patient Safety

    Jigisha Bharatbhai Mehta / Ganesh Naik / Dinesh Chauhan

    Journal of Clinical and Diagnostic Research, Vol 15, Iss 3, Pp UD03-UD

    2021  Volume 05

    Abstract: Patients undergoing lower extremity amputation may have multiple co-morbid conditions like diabetes, cardiovascular, hepatic and renal disorders and are at risk of perioperative mortality and morbidity. Peripheral nerve blocks are associated with minimal ...

    Abstract Patients undergoing lower extremity amputation may have multiple co-morbid conditions like diabetes, cardiovascular, hepatic and renal disorders and are at risk of perioperative mortality and morbidity. Peripheral nerve blocks are associated with minimal haemodynamic changes, improved regional blood flow and are ideal for high risk patients who cannot tolerate slightest attenuation in haemodynamic response. The present report is of a 50-year-old female patient admitted for below knee amputation surgery. Sciatic nerve and lumbar plexus block were the mode of anaesthesia. It was found that regional anaesthesia in the form of nerve block provided adequate anaesthesia and analgesia, provided greater haemodynamic stability and patient safety.
    Keywords amputation surgery ; high risk surgeries ; regional anaesthesia ; sciatic nerve block ; Medicine ; R
    Language English
    Publishing date 2021-03-01T00:00:00Z
    Publisher JCDR Research and Publications Private Limited
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

    More links

    Kategorien

  8. Article: Prospective Observational Study of Early Tracheostomy Role in Operated Severe Head Injury Patients at A Level 1 Trauma Center.

    Bharti, Rohit / Sindhu, Sindhu / Sundaram, Ponraj K / Chauhan, Ganesh

    Bulletin of emergency and trauma

    2021  Volume 9, Issue 4, Page(s) 188–194

    Abstract: Objective: To evaluate the impact of the early tracheostomy on operated patients with severe head injury.: Methods: This prospective observational study was conducted at a level 1 trauma center and medical college over one-year period. The study ... ...

    Abstract Objective: To evaluate the impact of the early tracheostomy on operated patients with severe head injury.
    Methods: This prospective observational study was conducted at a level 1 trauma center and medical college over one-year period. The study included all surgically managed severe head injury patients without any other life-threatening major injuries. Patients who underwent tracheostomy within 7 days were classified as early tracheostomy.
    Results: The patient's mean age of this cohort study was 43.4±14.5 years. Motor-vehicle accidents were being the most common cause of severe head injury. Operated patients were undergoing early tracheostomy on an average of 2.9 days. We were observed that the patients spent on a mechanical ventilation on an average 3.67±2.26 days. This was significantly lower than previous four published studies (
    Conclusion: We have shown that it is possible to decrease mechanical ventilation (MV) time, intensive care unit (ICU) stay and total hospital stay by doing early tracheostomy in operated severe head injury patients.
    Language English
    Publishing date 2021-10-20
    Publishing country Iran
    Document type Journal Article
    ZDB-ID 2722734-0
    ISSN 2322-3960 ; 2322-2522
    ISSN (online) 2322-3960
    ISSN 2322-2522
    DOI 10.30476/BEAT.2021.86725.1198
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  9. Article ; Online: An audit of Grade III or more skin reactions in consecutively assessed patients at a modern radiation oncology center.

    Pandey, Vikas Kumar / Munshi, Anusheel / Mohanti, Bidhu Kalyan / Bansal, Kanika / Rastogi, Khushboo / Ganesh, Tharmarnadar / Chauhan, Rohit Singh / Chaudhari, Bhavini / Pandey, Pramod

    Journal of cancer research and therapeutics

    2022  Volume 18, Issue 1, Page(s) 84–88

    Abstract: Purpose: Radiation dermatitis is most common and debilitating side effects of radiotherapy leading to treatment interruption, thereby compromising the local control, and effecting quality of life. With the invent of modern imaging and recent advances in ...

    Abstract Purpose: Radiation dermatitis is most common and debilitating side effects of radiotherapy leading to treatment interruption, thereby compromising the local control, and effecting quality of life. With the invent of modern imaging and recent advances in megavoltage radiotherapy, radiation-related side effects have reduced. In this audit, we report the risk factors associated with Grade III dermatitis in modern centers.
    Materials and methods: We analyzed 172 patients treated with volume modulated arc therapy (VMAT) and static field intensity-modulated radiotherapy (SFIMRT) at our center. All head and neck, breast, gynecological, GU malignancies, and sarcoma patients treated with a dose of >45 Gy from April 2018 to December 2019 were included in the study. On couch, treatment verification was done with cone-beam computer tomography (CBCT). Slice-by-slice verification of planning target volume (PTV) with CBCT was done in the first three fractions and weekly thereafter. Skin evaluation was done using CTCAE v. 5. Statistical analysis was done using SPSS v. 22.
    Results: Of the 172 patients treated with VMAT and SFIMRT, 15 patients (8.7%) had Grade III dermatitis. Grade III dermatitis was mostly seen in breast cancer followed by head-and-neck patients. More reactions were observed in patients with advanced stage disease. Treatment verification is important at the later course of treatment, especially in head-and-neck cases where the treatment volume is large and PTV may extend outside skin. Contributing factors of radiation dermatitis at modern radiotherapy center are gene mutation, use of concurrent chemoradiotherapy, and bolus.
    Conclusion: We hereby conclude that PTV mismatch in weekly treatment verification, genetic mutations, concurrent chemo-radiotherapy, use of thermoplastic mask, and bolus are the contributing factors for Grade III dermatitis in modern radiotherapy centers.
    MeSH term(s) Humans ; Quality of Life ; Radiation Oncology ; Radiotherapy Dosage ; Radiotherapy Planning, Computer-Assisted/methods ; Radiotherapy, Intensity-Modulated/adverse effects ; Radiotherapy, Intensity-Modulated/methods
    Language English
    Publishing date 2022-04-05
    Publishing country India
    Document type Journal Article
    ZDB-ID 2187633-2
    ISSN 1998-4138 ; 0973-1482
    ISSN (online) 1998-4138
    ISSN 0973-1482
    DOI 10.4103/jcrt.JCRT_611_20
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  10. Article: A comparative study between bone transport technique using Ilizarov/LRS fixator and induced membrane (Masquelet) technique in management of bone defects in the long bones of lower limb.

    Gupta, Govind Kumar / Majhee, Amit Kumar / Rani, Sudha / Shekhar, Shubhendu / Prasad, Pancham / Chauhan, Ganesh

    Journal of family medicine and primary care

    2022  Volume 11, Issue 7, Page(s) 3660–3666

    Abstract: Introduction: In earlier times due to difficulty in managing segmental long bone defects, amputation was the preferred treatment. Nonunion with bone loss of long bones is a challenging problem, requiring serious attention. Post-traumatic segmental bone ... ...

    Abstract Introduction: In earlier times due to difficulty in managing segmental long bone defects, amputation was the preferred treatment. Nonunion with bone loss of long bones is a challenging problem, requiring serious attention. Post-traumatic segmental bone defects can have severe long-term ill impact on patient's lives. Reconstruction is more difficult and functional outcome is usually less satisfactory compared to bony outcome. Distraction osteogenesis and induced membrane technique are the techniques that can be used.
    Aims and objectives: To find out and compare clinical, radiological, and functional outcome of bone transport technique and induced membrane technique in management of bone defects in the long bones of lower limb.
    Materials and methods: A comparative study was conducted on 24 patients (22 males and 2 females) of lower extremity fractures with bone defect more than 3 cm. Patients were divided into two groups according to the method of reconstruction used, that is, either bone transport technique in 12 patients (group A) or masquelet in the other 12 patients (group B). The mean age of the patients was 44 years in group A and was 38 years in group B. Regular follow-up was done with a mean period of follow up of 18.35 ± 5.58 months in group A and 18.25 ± 3.95 months in group B.
    Result: In group A (bone transport), 67% showed union, 25% showed union with bone graft and 8% showed delayed union. In group B (masquelet), 75% showed union and 25% showed delayed union. bone transport technique showed excellent results in 58.3% and good in 41.7% while Masquelet technique showed excellent result in 50% and good in 50%.
    Conclusion: For an orthopaedic surgeon, long bones defects with a substantial loss of bone volume are one of the most challenging bone defects encountered in clinical practice. Induced membrane technique and bone transport both offer successful options for filling of bone defects. Both techniques have its own pros and cons and provide varied option for healing. In our study, both methods have comparable results statistically although induced membrane technique required soft tissue reconstructive procedures.
    Language English
    Publishing date 2022-07-22
    Publishing country India
    Document type Journal Article
    ZDB-ID 2735275-4
    ISSN 2278-7135 ; 2249-4863
    ISSN (online) 2278-7135
    ISSN 2249-4863
    DOI 10.4103/jfmpc.jfmpc_2447_21
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

To top