Se describen en este trabajo los restos bien conservados de Aspidella, fósiles de cuerpo blando ediacáricos de la Arenisca de Jodhpur (Supergrupo de Marwar) el área de Sursagar, Jodhpur, al oeste de ...Rajasthan, India. Éstos muestran características morfológicas características descritas anteriormente en otros famosos yacimientos fósiles ediacáricos, como los de la Formación de Fermuse (Terranova), Australia meridional y el Mar Blanco de Rusia.
ABSTRACT
Endoscopic endonasal trans-sphenoid surgery (EETS) is increasingly used for pituitary lesions. Pre-operative CT and MRI scans and peroperative endoscopic visualization can provide useful ...anatomical information. EETS is indicated in sellar, suprasellar, intraventricular, retro-infundibular, and invasive tumors. Recurrent and residual lesions, pituitary apoplexy and empty sella syndrome can be managed by EETS. Modern neuronavigation techniques, ultrasonic aspirators, ultrasonic bone curette can add to the safety. The binostril approach provides a wider working area. High definition camera is much superior to three-chip camera. Most of the recent reports favor EETS in terms of safety, quality of life and tumor resection, hospital stay, better endocrinological, and visual outcome as compared to the microscopic technique. Nasal symptoms, blood loss, operating time are less in EETS. Various naso-septal flaps and other techniques of CSF leak repair could help reduce complications. Complications can be further reduced after achieving the learning curve, good understanding of limitations with proper patient selection. Use of neuronavigation, proper post-operative care of endocrine function, establishing pituitary center of excellence and more focused residency and endoscopic fellowship training could improve results. The faster and safe transition from microscopic to EETS can be done by the team concept of neurosurgeon/otolaryngologist, attending hands on cadaveric dissection, practice on models, and observation of live surgeries. Conversion to a microscopic or endoscopic-assisted approach may be required in selected patients. Multi-modality treatment could be required in giant and invasive tumors. EETS appears to be a better surgical option in most pituitary adenoma.
This work investigated the feasibility of using other solvents that are safer than n-hexane for the extraction of soybean oil, and monitored their effect on the quality of oil and meal. n-Heptane, ...n-propanol, IPA and ethanol were found to be as effective as n-hexane in the extraction of soybean oil. The aqueous solvent mixtures and the respective azeotropes were also efficient in extracting the oil. The nutritive profile of the soyoil and soymeal were on par with that obtained from n-hexane extraction.
Class II malocclusion cases possess a constant challenge to orthodontists since time immemorial. Mandibular retrusion is the most common feature of class II malocclusion, rather than maxillary ...prognathism. Association of class II with asymmetry, a condition called asymmetric mandibular retrognathia (AMR), gives a tougher challenge to orthodontists for management. The following case presents effective management of AMR using differential loading technique. A young boy aged 12 years presented with mandibular retrognathia associated with facial asymmetry. He was treated with a differential force loading technique using a fixed functional appliance.
Improved facial profile with increased mandibular length achieved. A significant reduction in facial asymmetry was also appreciable.
Differential force loading technique using fixed functional appliance while being least troublesome for the patient may prove beneficial to harness excellent and satisfactory results with minimal efforts in such cases of mandibular retrusion with facial asymmetries and also decrease the need for surgical correction.
Parihar AV, Angamuthu KP, Sahoo R,
Management of Asymmetric Mandibular Retrognathia with Differential Loading Technique: A Case Report. Int J Clin Pediatr Dent 2021;14(S-1):S107-S113.
Microvascular decompression is an effective method of treatment in trigeminal neuralgia. It may fail if a compressing vessel is overlooked during surgery. The endoscope has an edge over the ...microscope in visualizing such conflicts.
This is a prospective study of 51 patients. Preoperative computed tomography and magnetic resonance imaging scans were performed in all the cases. A 4 − 5 cm retroauricular skin incision was made and an about 3 cm craniectomy was performed. A 0° 4 mm telescope supported by the holder was used after the dural opening. A 2 by 6 cm sheet prepared from hand gloves was used to protect the brain. A Karl Storz 30° telescope was used for the visualization of the trigeminal nerve from the pons to Meckel's cave and dissection of the anterior conflict. Small pieces of dura patch were interposed between the nerve and the vessel. The microscope was not used at any stage. Post-operative infection, cerebrospinal fluid leak, cranial nerve deficit, failure of procedure in terms of pain relieves and recurrences of pain were recorded. The follow-up period ranged from 24 to 55 months with an average of 36 months.
There was no mortality or any major permanent complications. The duration of stay ranged from 3 to 10 days with an average of 3.6 days. The pain was relieved in 48 patients.
Endoscopic vascular decompression is an effective and safe alternative to endoscopic assisted microvascular decompression in trigeminal neuralgia.
Endoscopic third ventriculostomy (ETV) is a procedure of choice in the treatment of obstructive hydrocephalus. Neurovascular injury while perforating the ventricular floor can occur when using a ...conventional probe, especially in patients with a thick and opaque third ventricle floor. The water jet dissection technique can be useful in such cases to perform an initial perforation.
The water jet dissection technique was used to perform ETV in 36 patients with obstructive hydrocephalus with a thick and opaque third ventricle floor over a 3-year period. A water jet was generated using a syringe connected to a 2-mm catheter.
The water jet dissection technique successfully created a patent ETV stoma in 31 patients. 5 patients needed a re-operation due to a blocked stoma. There were no complications related to the procedure. An improvement in clinical function was seen in 28 (83.3%) patients at a median follow-up of 29 months.
The water jet dissection is a useful technique while performing ETV to prevent neurovascular injury. Our improvised technique of creating a water jet is safe, inexpensive, readily available and can be practiced at any centre performing ETV.
We present here a new insight into the chemical reactivity and bioactivity of dopamine (DA) and gallic acid (GA) and their hyaluronic acid (HA) conjugates. Our data suggest that HA-GA scaffolds are ...superior to HA-DA, with higher oxidation kinetics, improved tissue adhesive properties, and radical scavenging ability with a lower pro-inflammatory response.
Gallic acid-functionalized materials possess superior tissue-adhesive, antioxidant, and immunomodulatory properties due to the lower p
K
a
and faster oxidation kinetics, making them superior to dopamine derivatives for biomedical applications.
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