Filip Brkić

Dr. Filip Brkić

Merkur University Hospital, Zagreb, Zagreb, Grad, Croatia
orcid

Research Focus & Metrics

Academic Career Length

4Years (2023-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

View All Publications
25 May 2023 in Pharmaceuticals
Verified
Journal Article
Open access
PDF file
SSSanja Strbe
Sanja Strbe
ISIvan Maria Smoday
Ivan Maria Smoday
IKIvan Krezic
Ivan Krezic
LKLuka Kalogjera
Luka Kalogjera
VVVlasta Vukovic
Vlasta Vukovic
PSPredrag Sikiric
Predrag Sikiric
Even before behavioral disturbances, neuroleptics, amphetamine, and domperidone application rapidly emerged severe occlusion/occlusion-like syndrome, shared innate vascular and multiorgan failure in rats, comparable to occlusion/occlusion-like syndrome described with vessel(s) occlusion or similar noxious procedures application. As therapy, i.e., activation of the collateral pathways, “bypassing key” (activated azygos vein pathway, direct blood flow delivery), the stable gastric pentadecapeptide BPC 157 is a novel solution. Recently, BPC 157 therapy particularly counteracted neuroleptic- or L-NAME-induced catalepsy, lithium intoxication, and schizophrenia positive and negative symptoms (amphetamine/methamphetamine/apomorphine/ketamine). In rats with complete calvariectomy, medication (BPC 157 10 µg/kg, 10 ng/kg ip or ig) was given 5 min after distinctive dopamine agents (mg/kg ip) (haloperidol (5), fluphenazine (5), clozapine (10), risperidone (5), olanzapine (10), quetiapine (10), or aripiprazole (10), domperidone (25), amphetamine (10), and combined amphetamine and haloperidol) and assessed at 15 min thereafter. All neuroleptic-, domperidone-, and amphetamine-induced comparable vascular and multiorgan failure severe syndrome was alleviated with BPC 157 therapy as before major vessel(s) occlusion or other similar noxious procedures. Specifically, all severe lesions in the brain (i.e., immediate swelling, hemorrhage), heart (i.e., congestion, arrhythmias), and lung (i.e., congestion, hemorrhage), as well as congestion in the liver, kidney, and gastrointestinal (stomach) tract, were resolved. Intracranial (superior sagittal sinus), portal, and caval hypertension and aortal hypotension were attenuated or eliminated. BPC 157 therapy almost annihilated arterial and venous thrombosis, peripherally and centrally. Thus, rapidly acting Virchow triad circumstances that occur as dopamine central/peripheral antagonists and agonist essential class-points, fully reversed by BPC 157 therapy, might be overwhelming for both neuroleptics and amphetamine.

11 January 2023 in Radiology Case Reports
Verified
Journal Article
Open access
AMAndro Matković
Andro Matković
TFThomas Ferenc
Thomas Ferenc
NJNikolina Jurjević
Nikolina Jurjević
FBFilip Brkić
Filip Brkić
LKLovro Kavur
Lovro Kavur
VVVinko Vidjak
Vinko Vidjak
Bladder diverticula are defined as an outpouching of the mucosa into the muscle layer of the bladder wall. There is a well-known link between urinary bladder diverticula and tumors arising within the diverticula. They are rare with an incidence rate of 0.8%-10%. We report an intradiverticular urothelial carcinoma in a 72-year-old man with a known history of multiple episodes of acute urinary retention and urinary tract infections, followed by transurethral resection of the benign prostatic hyperplasia.

16 January 2025 in Pharmaceutics
Verified
Journal Article
Open access
PDF file
Danijel MatekDanijel Matek
Danijel Matek
IMIrena Matek
Irena Matek
ESEva Staresinic
Eva Staresinic
MJMladen Japjec
Mladen Japjec
IBIvan Bojanić
Ivan Bojanić
IBIvica Brizić
Ivica Brizić
Background: This is a novel rat study using native peptide therapy, focused on reversing quadriceps muscle-to-bone detachment to reattachment and stable gastric pentadecapeptide BPC 157 per-oral therapy for shared muscle healing and function restoration. Methods: Pharmacotherapy recovering various muscle, tendon, ligament, and bone lesions, and severed junctions (i.e., myotendinous junction), per-oral in particular (BPC 157/kg/day 10 µg, 10 ng), provides muscle-to-bone reattachment after quadriceps muscle detachment, both complete (rectus muscle) and partial (vastus muscles). Results: Immediately post-injury, and at 1, 2, 3, 5, 7, 14, 21, 28, 60, and 90 days post-injury, quadriceps muscle-to-bone detachment showed definitive healing failure (impaired walking and permanent knee flexure). Contrarily, macro/microscopic, ultrasonic, magnetic resonance, biomechanical, and functional assessments revealed that BPC 157 therapy recovering effects for all time points were consistent. All parameters of the walking pattern fully improved, and soon after detachment and therapy application, muscle approached the bone, leaving a minimal gap (on ultrasonic assessment), and leg contracture was annihilated. The healing process occurs immediately after detachment from both sides: the muscle and the bone. The reattachment fibers from the ends of the muscle could be traced into the new bone formed at the surface (note, at day 3 post-detachment, increased mesenchymal cells occurred with periosteum reactivation). Consequently, at 3 months, the form was stable, and the balance between the muscle and bone was the following: well-organized bone, newly formed as more cortical bone providing a narrower bone marrow space, and the muscle and mature fibers were oriented parallel to the bone axis and were in close contact with bone. Conclusions: Therefore, to achieve quadriceps muscle-to-bone reattachment, the BPC 157 therapy reversing course acts from the beginning, resolving an otherwise insurmountable deleterious course.

26 May 2025 in Diagnostics
Verified
Journal Article
Open access
PDF file
SĆSandra Ćulap
Sandra Ćulap
FBFilip Brkić
Filip Brkić
AMAndro Matković
Andro Matković
JSJelena Svetec
Jelena Svetec
NJNikolina Jurjević
Nikolina Jurjević
TFThomas Ferenc
Thomas Ferenc
The Bosniak classification categorizes renal cystic lesions based on cross-sectional imaging features from clearly benign (Bosniak type I) to malignant lesions (Bosniak type IV). A 67-year-old female patient presented to the emergency department with typical symptoms of acute cholecystitis. During a transabdominal ultrasound examination, an incidental finding was a suspicious cluster of anechoic cystic lesions with internal septa in the left kidney. Following contrast-enhanced computed tomography (CT), the lesion was categorized as a Bosniak type IV cyst. Compared to an earlier CT scan, a Bosniak type I cyst preceded the current Bosniak type IV cyst, suggesting a malignant alteration over the 7-year interval. It was surgically removed, and pathohistological analysis revealed cystic renal cell carcinoma. Although simple renal cysts rarely become malignant, scientific discussion about potential algorithms for additional surveillance is needed.

23 May 2025 in Reports
Verified
Journal Article
Open access
PDF file
TFThomas Ferenc
Thomas Ferenc
AMAndro Matković
Andro Matković
JSJelena Svetec
Jelena Svetec
FBFilip Brkić
Filip Brkić
TBTomica Bratić
Tomica Bratić
VVVinko Vidjak
Vinko Vidjak
Background and Clinical Significance: The deer horn sign is an ultrasonographic (US) finding suggesting congestive hepatopathy. It is composed of dilated intrahepatic inferior vena cava (IVC) representing the deer’s head and dilated hepatic veins (HVs) representing its horns. Case Presentation: A 72-year-old female patient presented with a one-week history of dull pain in the right upper abdominal quadrant. Her medical records showed that she had previously experienced cardiovascular problems; however, she is without any recent heart failure symptoms. The transabdominal US demonstrated the deer horn sign and hemodynamic changes in the hepatic venous drainage, which is suggestive of congestive hepatopathy. An echocardiogram revealed congestive heart failure with a preserved ejection fraction, mild-to-moderate mitral and tricuspid valve insufficiency, and severe aortic valve stenosis with mild aortic valve insufficiency. Conclusions: The definite diagnosis of heart failure is based on clinical and laboratory features; however, this sign may be helpful for diagnosis in emergency settings.

22 June 2023 in Radiology Case Reports
Verified
Journal Article
Open access
FBFilip Brkić
Filip Brkić
SŽSven Želalić
Sven Želalić
MVMirta Zekan Vučetić
Mirta Zekan Vučetić
SSSaša Schmidt
Saša Schmidt
VVVinko Vidjak
Vinko Vidjak
JPJelena Popić
Jelena Popić
The inferior vena cava agenesis (IVCA) is a rare and often asymptomatic malformation due to the abundant development of the collateral circulation. However, it is frequently found in young people and carries a significant risk of deep venous thrombosis (DVT). It is estimated that about 5% of patients under 30 years of age presenting with DVT have this condition. We report a case of a previously healthy 23-year-old patient presenting with signs of acute abdomen and hydronephrosis due to the thrombophlebitis of an unusual iliocaval venous collateral, which developed secondary to IVCA. After treatment, the iliocaval collateral and hydronephrosis completely regressed on a 1-year follow-up. To our knowledge, this is the first such case reported in the literature.