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Related Concept Videos

Septins01:19

Septins

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Septins are protein filaments forming the cytoskeleton along with the microtubules, microfilaments, intermediate filaments, and other accessory proteins. In 1971 while studying the cell division cycle in mutant Saccharomyces cerevisiae Harwell et al. first identified the septin-related genes playing a crucial role in yeast cytokinesis. Fluorescence microscopy revealed that these proteins localize at the budding neck as rings. These ring-like proteins were then named Septins by John Pringle, and...
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Role of Septins01:02

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Septins are the recently discovered fourth major protein component of the cytoskeleton, along with microfilaments, microtubules, and intermediate filaments. These proteins can associate with other cytoskeletal filaments and carry out varied roles or can be free-floating in the cytoplasm.
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Restriction Enzymes01:11

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Restriction enzymes are bacterial enzymes used to cut DNA in a sequence-specific manner. To cleave DNA, they bind to specific palindromic sequences called restriction sites. Such palindromic DNA sequences or inverted repeats are commonly found in regions of functional significance, such as the origin of replication, gene operator sites, and regions containing transcription termination signals.
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Zones of Protection01:16

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In power systems, the entire setup is divided into protective zones to isolate faults and protect the rest of the network. These zones include generators, transformers, buses, transmission lines, distribution lines, and motors. Each zone can be visualized as a separate room in a house, with each room protected by its own circuit breaker.
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Protection of Alcohols02:31

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This lesson delves into the concept of protection and deprotection of a functional group fundamental to synthetic organic chemistry. These phenomena are explained in the context of aliphatic and aromatic alcohols.
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Related Experiment Video

Updated: Jan 20, 2026

Septins
01:19

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Recurrent peptic ulcer.

B E Stabile, E Passaro

    Gastroenterology
    |January 11, 1976
    PubMed
    Summary
    This summary is machine-generated.

    Recurrent ulcers after peptic ulcer surgery often stem from inadequate procedures. Reoperation offers a 70% success rate for these difficult-to-treat ulcers.

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    Area of Science:

    • Gastroenterology
    • Surgical Oncology

    Background:

    • Peptic ulcer disease (PUD) surgery can lead to recurrent ulcers in 1-5% of patients.
    • Recurrence often indicates deficiencies in the initial surgical intervention, which are challenging to diagnose due to anatomical and physiological changes.

    Purpose of the Study:

    • To review the causes, diagnostic approaches, and management strategies for recurrent peptic ulcers following surgical treatment.

    Main Methods:

    • Comprehensive evaluation including gastrointestinal X-rays, endoscopy, serum calcium and gastrin levels, and provocative testing.
    • Review of surgical deficiencies (incomplete vagotomy, inadequate gastric resection) and endocrine causes (gastrinoma, retained gastric antrum, hyperparathyroidism).

    Main Results:

    • Medical management is largely ineffective for recurrent ulcers.
    • Reoperation is successful in approximately 70% of cases with a 4% mortality rate.
    • Specific surgical approaches are recommended based on the initial procedure and identified deficiencies.

    Conclusions:

    • Accurate diagnosis is crucial for effective management of recurrent peptic ulcers.
    • Reoperation is the primary treatment, with tailored surgical strategies improving outcomes.
    • Avoidance of non-acid reducing operations is advised due to high mortality and recurrence rates.