The plasmid-transposon Tn9-322 was constructed by inverted transposition from the pBR322::Tn9 plasmid. The precise excision of the Tn9-322 transposon from the proB gene site can proceed by the Campbell's model. This fact was demonstrated by appearance of the plasmid-transposons after their precise excision. They contain two IS1 elements flanking a short direct repeat of the target DNA. The recombinational mechanism of precise excision of Tn9 type transposons seems not to be alternative but looks as an additional one to a well-known slippage mechanism proved for Tn5 and Tn10.
Download full-text PDF |
Source |
|---|
Publication Analysis
Top Keywords
Similar Publications
Congenital scoliosis presenting in teenage years outcomes without hemivertebra excision.
Spine Deform
January 2025
Department of Orthopaedics, Spinal Deformity and Pediatric Orthopaedics, Billie and George Ross Center for Advanced Pediatric Orthopaedics and Minimally Invasive Spinal Surgery, Cohen Children's Medical Center, Northwell Hofstra School of Medicine, 7 Vermont Drive, Lake Success, NY, 11042, USA.
Purpose: In congenital scoliosis, the surgical strategy approach of hemivertebra excision, with or without instrumentation and fusion, is a common approach to correction of scoliosis. However, hemivertebra excisions are technically challenging, with potential complications including spinal cord injury, nerve root injury and cerebrospinal fluid leak. The purpose of this study was to determine whether correction of congenital scoliosis can be achieved using a posterior instrumentation/fusion-only approach without the need for hemivertebra excision.
View Article and Find Full Text PDFKnee Desmoplastic Melanoma, an Uncommon Tumor, Disguised as a Malignant Peripheral Nerve Sheath Tumor: A Case Report and Review of the Literature.
Cureus
December 2024
Medical Oncology, Mohammed VI University Hospital, Oujda, MAR.
Desmoplastic melanoma is a rare and distinct subtype of cutaneous melanoma, it presents diagnostic challenges due to the lack of specific clinical features and overlapping histopathological characteristics with other malignancies, which necessitate careful clinicopathological correlation and advanced immunohistochemical profiling. While surgical excision remains the cornerstone of treatment, advances in precision medicine, particularly immune checkpoint inhibitors, have shown promise in improving outcomes for unresectable and metastatic desmoplastic melanoma. We present a case study involving a 52-year-old woman misdiagnosed with a malignant peripheral nerve sheath tumor and later identified as desmoplastic melanoma through re-evaluation of histopathological and immunohistochemical findings.
View Article and Find Full Text PDFDetermination of adequate bony resection margins in inflammatory jaw pathologies using SPECT-CT in primary mandibular reconstruction with virtually planned vascularized bone flaps.
Clin Oral Investig
January 2025
Department of Oral and Maxillofacial Surgery, University Hospital RWTH Aachen, Pauwelsstraße 30, D-52074, Aachen, Germany.
Objectives: In advanced stages of osteoradionecrosis, medication-related osteonecrosis of the jaw, and osteomyelitis, a resection of sections of the mandible may be unavoidable. The determination of adequate bony resection margins is a fundamental problem because bony resection margins cannot be secured intraoperatively. Single-photon emission computed tomography (SPECT-CT) is more accurate than conventional imaging techniques in detecting inflammatory jaw pathologies.
View Article and Find Full Text PDFTailgut cyst, management of a rare perianal mass: a case report.
AME Case Rep
November 2024
Department of General and Digestive Surgery, IRIS Sud Hospitals, Brussels, Belgium.
Background: A perianal mass has a wide range of possible diagnoses, including tailgut cysts. Tailgut cysts are congenital, and their development is slow. Because its most common placement is retro-rectal, it is extremely rare to find it on the perianal level only.
View Article and Find Full Text PDFGenAI synthesis of histopathological images from Raman imaging for intraoperative tongue squamous cell carcinoma assessment.
Int J Oral Sci
January 2025
School of Cyber Science and Engineering, Sichuan University, Chengdu, China.
The presence of a positive deep surgical margin in tongue squamous cell carcinoma (TSCC) significantly elevates the risk of local recurrence. Therefore, a prompt and precise intraoperative assessment of margin status is imperative to ensure thorough tumor resection. In this study, we integrate Raman imaging technology with an artificial intelligence (AI) generative model, proposing an innovative approach for intraoperative margin status diagnosis.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!