13,696 results match your criteria distal segment


CDKL kinase regulates the length of the ciliary proximal segment.

Curr Biol 2021 Apr 8. Epub 2021 Apr 8.

Department of Molecular Biology and Biochemistry, Simon Fraser University, 8888 University Drive, Burnaby, BC V5A 1S6, Canada; Centre for Cell Biology, Development, and Disease, Simon Fraser University, 8888 University Drive, Burnaby, BC V5A 1S6, Canada. Electronic address:

Cilia are organelles found throughout most unicellular eukaryotes and different metazoan cell types. To accomplish their essential roles in cell motility, fluid flow, and signaling, cilia are divided into subcompartments with variable structures, compositions, and functions. How these specific subcompartments are built remains almost completely unexplored. Read More

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Successful treatment of adult cecorectal intussusception caused by cecum cancer with mobile cecum: a case report.

Surg Case Rep 2021 Apr 15;7(1):96. Epub 2021 Apr 15.

Department of Surgery, Kobe Rosai Hospital, 4-2-23 Kagoikedori, Chuouku, Kobe, Hyogo, 651-0053, Japan.

Background: Intussusception occurs when a segment of the bowel (the intussusceptum) telescopes into an adjacent segment (the intussuscipiens). Adult intussusception occurs rarely and often requires surgical resection for its treatment. We describe the case of an adult patient with extremely rare cecorectal intussusception treated using a novel combined transabdominal and trans-anal approach, which has not yet been reported in the literature. Read More

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The semirecumbent position for high-resolution esophageal manometry. Results of a feasibility study.

Eur J Gastroenterol Hepatol 2021 Apr 9. Epub 2021 Apr 9.

Department of Biomedical Sciences for Health, Division of General and Foregut Surgery, IRCCS Policlinico San Donato, University of Milan, Milano, Italy.

Objective: Normative values for high-resolution manometry (HRM) have been obtained with the patient lying supine. The aim of the study was to compare supine, semirecumbent and sitting positions during HRM in terms of variation in normative metrics, diagnostic yield, and patient's comfort.

Methods: A prospective, single-center feasibility study was planned in consecutive patients referred to the esophageal function laboratory. Read More

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Intraspinal canal platform system for coil embolization of anterior spinal artery aneurysm associated with spinal cord arteriovenous malformation: a case report and literature review.

Br J Neurosurg 2021 Apr 14:1-6. Epub 2021 Apr 14.

Department of Neurosurgery, Shinshu University School of Medicine, Matsumoto, Japan.

Background: The prognosis for spinal artery aneurysms associated with spinal cord arteriovenous malformations (AVMs) is poor because of the high rupture rate of aneurysms. However, endovascular treatment remains technically difficult because the catheter system must be constructed via the small-caliber anterior spinal artery (ASA) or posterior spinal artery (PSA), which feeds functionally eloquent spinal cord. A 2. Read More

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Incomplete stent expansion in flow-diversion treatment affects aneurysmal haemodynamics a quantitative comparison of treatments affected by different severities of malapposition occurring in different segments of the parent artery.

Int J Numer Method Biomed Eng 2021 Apr 13:e3465. Epub 2021 Apr 13.

Institute of Fluid Science, Tohoku University, Sendai, Miyagi, Japan.

Incomplete stent expansion (IncSE) is occasionally seen in flow-diversion (FD) treatment of intracranial aneurysms; however, its haemodynamic consequences remain inconclusive. Through a parametric study, we quantify the aneurysmal haemodynamics subject to different severities of IncSE occurring in different portions of the stent. Two patient cases with IncSE confirmed in vivo were studied. Read More

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Residual Short-Segment Distal Inflammation Has No Significant Impact on the Major Relapse of Extensive Ulcerative Colitis.

Inflamm Bowel Dis 2021 Apr 13. Epub 2021 Apr 13.

Center for Advanced IBD Research and Treatment, Kitasato University Kitasato Institute Hospital, Tokyo,Japan.

Background: Mucosal healing is a treatment target for patients with ulcerative colitis. However, the relevance of proactive treatment for residual inflammation limited to the distal colon is unclear.

Materials And Methods: Patients with ulcerative colitis who had extensive colitis in clinical remission and underwent colonoscopy were retrospectively enrolled and followed up for 2 years. Read More

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Margin of safety for needle puncture of a radial artery.

J Anesth 2021 Apr 12. Epub 2021 Apr 12.

Department of Anesthesiology, Dokkyo Medical University Saitama Medical Center, 2-1-50 Minami-Koshigaya, Koshigaya, Saitama, 343-8555, Japan.

The radial artery is the preferred site for arterial cannulation because of consistent anatomic accessibility, ease of cannulation, and a low incidence of complications. One possible risk associated with cannulation is an injury to the superficial branch of the radial nerve. The radial nerve divides to the superficial branch and the deep branch at the top of the forearm, and the superficial branch lies behind the brachioradialis muscle close to the lateral side of the radial artery and terminates the lateral side of the radial artery about 7 cm proximal to the wrist. Read More

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[COVID-19 infection presenting as a myocardial infarction. Report of one case].

Rev Med Chil 2020 Dec;148(12):1848-1854

Departamento de Cardiología, Hospital Clínico, Universidad de Chile, Santiago, Chile.

Isolated cardiac involvement of COVID-19 is an infrequent presentation, and myocardial infarction is even less common. We report a 30-year-old man presenting with retrosternal pain of insidious onset whose intensity increases suddenly. On admission, the patient had tachycardia and an EKG showed a 1 mm ST-elevation and diffuse PQ segment depression. Read More

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December 2020

Electrophysiological mapping and assessment of facial nerve functioning during acoustic neuroma operations.

Ann Transl Med 2021 Mar;9(5):405

Department of Neurosurgery, Xuanwu Hospital, Capital Medical University, China International Neuroscience Institute (China-INI), Beijing, China.

Background: Electrophysiological monitoring is used routinely to protect the facial nerve during acoustic neuroma surgery. This study aimed to clarify the relationship between the facial nerve's electrophysiological monitoring parameters and its function after surgery.

Methods: Fifty-two patients with acoustic neuroma who underwent surgery were included. Read More

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Fragmentation of Ventricular Extrasystoles: A Potential New Electrocardiographic Window to Uncover Patients at Risk.

Cureus 2021 Mar 7;13(3):e13748. Epub 2021 Mar 7.

Cardiovascular Medicine, University of Missouri Kansas City, Kansas City, USA.

Fragmented QRS (fQRS) is a marker of conduction block due to myocardial scar that presents in electrocardiography (ECG) as an additional one or more R wave (R') or notching in the S wave nadir in contiguous leads. However, fQRS description on premature ventricular contractions (PVCs) has not been previously described. We describe a case of a 67-year-old male with a past medical history of prediabetes, hypertension and coronary artery disease who presented after an ophthalmic procedure with asymptomatic PVCs and episodes of bigeminy. Read More

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Photoelastic analysis of conventional and locking system for treatment of mandibular angle fractures with a single plate.

J Clin Exp Dent 2021 Apr 1;13(4):e328-e333. Epub 2021 Apr 1.

Department of Oral and Maxillofacial Surgery, Universidade do Sagrado Coração, R. Irmã Arminda, 10-50, 17011-160, Bauru, SP, Brazil.

Background: This photoelastic analysis evaluated stress distribution in different osteosynthesis systems, conventional and locking, used for treatment of mandibular angle fractures with a single plate.

Material And Methods: Angle fractures were simulated in mandibles made of photoelastic resin. Following Champy's method, plate osteosynthesis was performed. Read More

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Delayed Endovascular Thrombectomy for Ischemic Stroke in a Young Woman with No Known Risk Factors: A Case Report.

Am J Case Rep 2021 Apr 12;22:e930291. Epub 2021 Apr 12.

University of Nevada, Reno School of Medicine, Reno, NV, USA.

BACKGROUND National guidelines and consensus statements suggest a 24-hour window for endovascular recanalization in patients presenting with acute ischemic stroke due to large-vessel occlusion. However, the safety and efficacy of extending the window for intervention remains to be definitively established. CASE REPORT A healthy 26-year-old woman presented with headache, left-sided hemiplegia, and rightward gaze palsy 2 days after a minor trauma. Read More

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Clinical predictors of recurrent cephalic arch stenosis and impact of the access flow reduction on the patency rate.

J Vasc Access 2021 Apr 10:11297298211008758. Epub 2021 Apr 10.

Division of Nephrology, Department of Internal Medicine, College of Medicine, The Catholic University of Korea, Seoul, Korea.

Objective: Despite the widespread use of conventional percutaneous transluminal angioplasty (PTA), recurrence of cephalic arch stenosis (CAS), and low patency rate after PTA remain challenging problem. We aimed to identify the clinical predictors of recurrence of CAS and evaluate the effect of the access flow reduction on the fistula patency rate in patients with recurrent CAS.

Methods: In 1118 angiographies of 220 patients with CAS, access circuit patency rates after PTA and potential clinical predictors of recurrence of CAS were assessed. Read More

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Effect of cerebrospinal fluid pressure elevation on spinal cord perfusion during aortic cross-clamping with distal aortic perfusion.

Eur J Cardiothorac Surg 2021 Apr 11. Epub 2021 Apr 11.

University Department for Cardiac Surgery, Leipzig Heart Center, Leipzig, Germany.

Objectives: Distal aortic perfusion (DaP) is a widely accepted protective adjunct facilitating early reinstitution of visceral perfusion during extended thoracic and thoraco-abdominal aortic repair. DaP has also been suggested to secure distal inflow to the paraspinal collateral network via the hypogastric arteries and thereby reduce the risk of spinal cord ischaemia. However, an increase in cerebrospinal fluid (CSF) pressure is frequently observed during thoracoabdominal aortic aneurysm repair. Read More

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Clinical and Radiologic Characteristics of Caudal Regression Syndrome in a 3-Year-Old Boy: Lessons from Overlooked Plain Radiographs.

Pediatr Gastroenterol Hepatol Nutr 2021 Mar 4;24(2):238-243. Epub 2021 Mar 4.

Department of Pediatrics, Kangwon National University Hospital, Chuncheon, Korea.

Caudal regression syndrome (CRS) is a rare neural tube defect that affects the terminal spinal segment, manifesting as neurological deficits and structural anomalies in the lower body. We report a case of a 31-month-old boy presenting with constipation who had long been considered to have functional constipation but was finally confirmed to have CRS. Small, flat buttocks with bilateral buttock dimples and a short intergluteal cleft were identified on close examination. Read More

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Late basilic vein superficialization combined with revision using distal inflow (RUDI) operation to treat a symptomatic high flow fistula.

Ann Vasc Surg 2021 Apr 5. Epub 2021 Apr 5.

Department of Vascular Surgery, "Democritus" University of Thrace, University General Hospital of Evros, Alexandroupolis, Greece.

Background: Vascular access (VA)-related high flows (HF) are common with brachial artery based fistulas. Flow-reduction procedures are indicated in symptomatic patients or asymptomatic ones with flows >2L/min. However concomitant issues increase their complexity. Read More

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[Algorithm of ultrasonographic examination of patency of venous stents].

Angiol Sosud Khir 2021 ;27(1):48-51

Department of Cardiovascular and Endovascular Surgery, Kazan State Medical University of the RF Ministry of Public Health, Kazan, Russia.

Analysed in the article are the results of ultrasonographic examination of patency of venous stents implanted in 86 patients with obstructive lesions of the iliofemoral segment of deep veins. The authors proposed an algorithm of triplex scanning, making it possible to optimize ultrasonographic examination, as well as increasing the accuracy of assessing the state of the stent and patency of the stented segments of veins. The first stage was to examine the state of the stented venous segment in the mode of grey-scale scanning (B-mode), for which purpose the study was performed in the longitudinal and transverse projections. Read More

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Percutaneous deep venous arterialization at femoropopliteal segment for unhealed amputated stump ulcer after below the knee amputation.

Catheter Cardiovasc Interv 2021 Apr 6. Epub 2021 Apr 6.

Department of Radiology, Nara Medical University, Kashihara, Japan.

Efficacy of percutaneous deep venous arterialization (pDVA) has been reported for patients with no-option chronic limb threatening ischemia. To date, the procedure has been limited for below the knee/below the ankle occlusive disease. The present report describes the pDVA performed at a femoropopliteal segment for a patient with a stump complication after below the knee amputation. Read More

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Persistent primitive olfactory artery associated with early bifurcated accessory anterior cerebral artery.

Surg Radiol Anat 2021 Apr 6. Epub 2021 Apr 6.

Department of Neurology, Saitama Sekishinkai Hospital, Saitama, Japan.

Five types of persistent primitive olfactory artery (PPOA), a rare variation of the proximal anterior cerebral artery (ACA), have been reported. Type 1 is most common, generally following an extreme anteroinferior course and taking a hairpin turn before continuing to the distal A2 segment of the ACA. Triple ACAs are a common variation of the A2 segment of the ACA, and a centrally located artery is called an "accessory ACA" or "median artery of the corpus callosum". Read More

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Identification of PDGFRα-positive interstitial cells in the distal segment of the murine vas deferens.

Sci Rep 2021 Apr 6;11(1):7553. Epub 2021 Apr 6.

Division of Microscopic and Development Anatomy, Department of Anatomy, Kurume University School of Medicine, Kurume, 830-0011, Japan.

Platelet-derived growth factor receptor-α (PDGFRα)-positive interstitial cells (ICs) are widely distributed in various organs and may be involved in the motility of various tubular organs. We, for the first time, aimed to investigate the distribution, immunohistochemical characteristics, and ultrastructure of PDGFRα-positive ICs in murine vas deferens, using confocal laser scanning microscopy, transmission electron microscopy (TEM), and immuno-electron microscopy (immuno-EM). For immunofluorescence, we used antibodies against PDGFRα and other markers of ICs. Read More

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Effect of porosity of a functionally-graded scaffold for the treatment of corticosteroid-associated osteonecrosis of the femoral head in rabbits.

J Orthop Translat 2021 May 16;28:90-99. Epub 2021 Mar 16.

Department of Orthopaedic Surgery, Stanford University School of Medicine, Stanford, CA, USA.

Background/Objective: Core decompression (CD) with scaffold and cell-based therapies is a promising strategy for providing both mechanical support and regeneration of the osteonecrotic area for early stage osteonecrosis of the femoral head (ONFH). We designed a new 3D printed porous functionally-graded scaffold (FGS) with a central channel to facilitate delivery of transplanted cells in a hydrogel to the osteonecrotic area. However, the optimal porous structural design for the FGS for the engineering of bone in ONFH has not been elucidated. Read More

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Anabolic steroids and extreme violence: a case of murder after chronic intake and under acute influence of metandienone and trenbolone.

Int J Legal Med 2021 Apr 4. Epub 2021 Apr 4.

Institut de Médecine Légale, 11 rue Humann, F-67000, Strasbourg, France.

A 32-year-old male went to the police to claim he just killed his girlfriend by inflicting several stabs with a kitchen knife. He was very nervous and particularly aggressive. About 90 min after the assault, a blood specimen was collected with natrium fluoride as preservative. Read More

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The cephalothoracic sucker of sea lice (Crustacea: Copepoda: Caligidae): The functional importance of cuticular membrane ultrastructure.

Arthropod Struct Dev 2021 Apr 1;62:101046. Epub 2021 Apr 1.

Department of Life Sciences, The Natural History Museum, Cromwell Road, London SW7 5BD, United Kingdom.

Sea lice adhere to the body surface of host fish with a cephalothoracic sucker. Caligus adheres to this substrate using legs 2 and 3, and the action of cephalothoracic muscles. Lunules, small, paired, anterior sucker-like structures, have a vital function in the initial step of adhering and contain a unique endocuticule containing elements that may behave like active matter and serve as the actuating mechanism. Read More

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Number of screws in the articular segment of distal humerus AO/OTA C-type fractures treated with open reduction internal fixation is associated with complication rate.

SICOT J 2021 1;7:25. Epub 2021 Apr 1.

Department of Orthopedic Surgery, Columbia University Irving Medical Center, 622 W. 168th St. PH-11, New York, 10032 NY, USA.

Introduction: Surgical treatment of distal humerus fractures can lead to numerous complications. Data suggest that the number of screws in the distal (articular) segment may be associated with complication rate. The purpose of this study is to evaluate the association between a number of screws in the distal segment and complication rate for surgical treatment of distal humerus fractures. Read More

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The Germline Marker Expressed in the Skin Layer of the Polychaete After Injury.

Zoolog Sci 2021 Apr;38(2):103-111

Fishery Research Laboratory, Kyushu University, Fukutsu 811-3304, Japan,

Nereidid polychaete is a homonomous metameric worm with a complete septum between each segment. Each segment has germ cells localized in the distal area of the parapodia. is also known to have high abilities of tissue regeneration; however, it is still unclear whether germ cells can regenerate in the healing tissue. Read More

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Multi-joint biomechanics during sloped walking in patients with developmental dysplasia of the hip.

Clin Biomech (Bristol, Avon) 2021 Mar 28;84:105335. Epub 2021 Mar 28.

Program in Physical Therapy, Washington University in St. Louis School of Medicine, St. Louis, MO, USA; Department of Orthopaedic Surgery, Washington University in St. Louis School of Medicine, St. Louis, MO, USA; Department of Biomedical Engineering, Washington University in St. Louis, St. Louis, MO, USA; Division of Biostatistics, Washington University in St. Louis, St. Louis, MO, USA; Department of Mechanical Engineering and Materials Science, Washington University in St. Louis, St. Louis, MO, USA. Electronic address:

Background: Developmental dysplasia of the hip is characterized by abnormal acetabular and femoral geometries that alter joint loading and increase the risk of hip osteoarthritis. Current understanding of biomechanics in this population remains isolated to the hip and largely focused on level-ground walking, which may not capture the variable loading conditions that contribute to symptoms and intra-articular damage.

Methods: Thirty young adult females (15 with dysplasia) underwent gait analysis during level, 10° incline, and 10° decline walking while whole-body kinematics, ground reaction forces, and electromyography (EMG) were recorded. Read More

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Factors related to microcatheter passage through the trans-cell approach using a low-profile visualized intraluminal support device: an in-vitro study.

J Neuroradiol 2021 Mar 30. Epub 2021 Mar 30.

Department of Neurosurgery, Kurashiki Central Hospital, Okayama, Japan.

Background And Purpose: The trans-cell approach using a low-profile visualized intraluminal support (LVIS) device is sometimes used for aneurysm coil embolization. However, factors related to microcatheter passage remain uninvestigated. We aimed to examine in-vitro factors related to microcatheter passage using the trans-cell approach with an LVIS. Read More

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Complex Ureteral Reconstruction in Kidney Transplantation.

Exp Clin Transplant 2021 Mar 31. Epub 2021 Mar 31.

From the Department of Surgery, Division of Transplantation, University of Wisconsin, Wisconsin, USA.

Objectives: Despite advances in surgical techniques and organ preservation, transplant ureteric strictures remain a common complication in kidney transplantation. A variety of endourological and surgical techniques have been utilized; however, there is a lack of consensus on the optimal modality in dealing with these complex cases.

Materials And Methods: We present challenging ureteral reconstruction cases after failed attempts at ureteral dilatation, failed conventional open repairs, and/or with bladder dysfunction. Read More

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Stripe rust resistance gene Yr34 (synonym Yr48) is located within a distal translocation of Triticum monococcum chromosome 5AL into common wheat.

Theor Appl Genet 2021 Mar 31. Epub 2021 Mar 31.

Department of Plant Sciences, University of California, Davis, CA95616, USA.

Key message The stripe rust resistance gene Yr34 was transferred to polyploid wheat chromosome 5AL from T. monococcum and has been used for over two centuries.Wheat stripe (or yellow) rust, caused by Puccinia striiformis f. Read More

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[A Case of Complete Response with S-1 plus Cisplatin Therapy Following Distal Gastrectomy for AFP-Producing Gastric Cancer with Liver Metastasis].

Gan To Kagaku Ryoho 2021 Mar;48(3):410-412

Dept. of Surgery, Sosa Municipal Hospital.

A 67-year-old man was admitted to our hospital because of nausea, anorexia and tarry stool. In the blood examination, serum α-fetoprotein(AFP)level was 1,650 ng/mL, and the upper gastrointestinal endoscopy showed a large hemorrhage tumor at the gastric body. Abdominal enhanced computed tomography(CT)showed a solitary mass in segment 4 of the liver. Read More

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