Craniofacial characteristics of Croatian and Syrian populations

Craniofacial area is apart of the human body which undergoes the greatest changes during development and is characterized by uneven growth. External and internal factors affect the growth and development of craniofacial structures. They are responsible for the occurrence of specific craniofacial characteristics in different races or populations within the same race. The present study investigates the possible differences of the basic head and face shapes between the Croatian and Syrian populations. The sample included 400 subjects of both sexes aged 18-24 years and was divided into a Croatian and a Syrian group with 200 subjects each. Six variables defined according to Martin and Saller were measured by standard anthropometric instruments. The results of the study demonstrated statistically significant differences between our subjects in all variables except face width. The dolichocephalic head type and the mesoprosopic face type were predominant in the Croatian population, while the brachycephalic head type and the euryprosopic face type dominated in the Syrian population

Do Parathyroid Glands from Individuals of Different Age and Gender Contain Lymph Vessels?

Whereas lymph vessels in some endocrine glands have been thoroughly investigated, data on these vessels in human parathyroid glands are often contradictory and deficient in available literature. Therefore, the aim of this study was to histomorphologically investigate whether lymph vessels could be found in human parathyroid glands postnatally and, if so, whether their presence was age- and gender-dependent. A total of 44 parathyroid glands from subjects of both genders, aged 4–90 years, were studied. The glands were divided into three groups. Those from the 1st and the 2nd age group demonstrated similar morphological structure of parenchyma with predominant chief cells with pale-staining cytoplasm, while the frequency of lymph vessels was lower in the 2nd group. Unlike in these groups, chief cells with dark- staining cytoplasm predominated in the glandular parenchyma of the 3rd age group where lymph vessels were not found in any of the examined glands. The frequency of lymph vessels in parathyroid glands was almost the same for both genders. Histomorphologic occurrence of lymph vessels coincided with the presence of endocrine cells with pale-staining cytoplasm, which allowed the assumption that lymph vessels were also one of the signs of functional activity of human parathyroid glands

Craniofacial Characteristics of Croatian and Syrian Populations

Craniofacial area is a part of the human body which undergoes the greatest changes during development and is characterized by uneven growth. External and internal factors affect the growth and development of craniofacial structures. They are responsible for the occurrence of specific craniofacial characteristics in different races or populations within the same race. The present study investigates the possible differences of the basic head and face shapes between the Croatian and Syrian populations. The sample included 400 subjects of both sexes aged 18–24 years and was divided into a Croatian and a Syrian group with 200 subjects each. Six variables defined according to Martin and Saller were measured by standard anthropometric instruments19. The results of the study demonstrated statistically significant differences between our subjects in all variables except face width. The dolichocephalic head type and the mesoprosopic face type were predominant in the Croatian population, while the brachycephalic head type and the euryprosopic face type dominated in the Syrian population

Morfometrijsko istraživanje zaušne žlijezde štakora nakon orhidektomije.

In this study the reaction of the rat parotid acini, duct system and the glandular connective tissue was analysed at various times after orchiectomy. Mature Fisher rats were sacrificed at 12 hours and at 3, 8, 15, 30 and 60 days after orchiectomy. Following the removal of parotid glands, histological sections were made and stereologically analysed by Weibel\u27s multipurpose test system. When compared to controls, the volume of the parotid acini (per mm3 of the tissue) in orchiectomized rats was significantly decreased, whereas the volume of the connective tissue (per mm3 of the tissue) was significantly increased from day 8 to day 60 of the experiment. The significantly lower volume of the ductal system (per mm3 of the tissue) was noted only 60 days after orchiectomy. The statistically significant shortening of the intralobular ducts (per mm3 of the tissue) was found from day 8 to day 60 after the operation. Interlobular ducts were significantly shorter from day 8 to day 15 after orchiectomy. The shortening of the rat parotid duct system and the changes of the parotid acini and the connective tissue after orchiectomy may be provoked by a lack of testosterone or some other substance which depends on androgens, such as epidermal growth factor (EGF).Tijekom ovog istraživanja proučavana je struktura acinusa, kanalnog sustava i veziva zaušne žlijezde štakora nakon različitih razdoblja po odstranjenju muške spolne žlijezde (orhidektomije). Zreli štakori soja Fisher usmrćeni su 12 sati te 3, 8, 15, 30 i 60 dana poslije orhidektomije. Nakon odstranjenja zaušnih žlijezdi, histološki rezovi su stereološki analizirani pomoću Weibel-ove mnogonamjeneske testne mrežice. U usporedbi s kontrolom, volumen acinusa zaušne žlijezde (u mm3 tkiva) orhidektomiranih štakora bio je značajno snižen, dok je volumen vezivnog tkiva (u mm3 tkiva) bio značajno povećan od 8-og pa sve do 60-og dana pokusa. Značajno smanjenje volumena kanalnog sustava (u mm3 tkiva) moglo se otkriti tek 60 dana nakon orhidektomije. Morfometrijska analiza također je pokazala da dolazi do značajnog skraćenja intralobularnog kanalnog sustava (u mm3 tkiva) u razdoblju od 8-og do 60-og dana nakon operacije. Skraćenje interlobularnih kanala moglo se zabilježiti u orhidektomiranih štakora usmrćenih samo 8-og i 15-og dana pokusa. Ovo skraćenje kanalnog sustava kao i promjene na acinusima i vezivnom tkivu zaušne žlijezde štakora mogli bi biti uzrokovani nedostatkom testosterona ili neke druge tvari koja je ovisna o androgenima, kao npr. epidermalnog čimbenika rasta (EGF)

Do parathyroid glands from individuals of different age and gender contain lymph vessels?

Whereas lymph vessels in some endocrine glands have been thoroughly investigated, data on these vessels in human parathyroid glands are often contradictory and deficient in available literature. Therefore, the aim of this study was to histomorphologically investigate whether lymph vessels could be found in human parathyroid glands postnatally and, if so, whether their presence was age- and gender-dependent. A total of 44 parathyroid glands from subjects of both genders, aged 4-90 years, were studied. The glands were divided into three groups. Those from the 1st and the 2nd age group demonstrated similar morphological structure of parenchyma with predominant chief cells with pale-staining cytoplasm, while the frequency of lymph vessels was lower in the 2nd group. Unlike in these groups, chief cells with dark- staining cytoplasm predominated in the glandular parenchyma of the 3rd age group where lymph vessels were not found in any of the examined glands. The frequency of lymph vessels in parathyroid glands was almost the same for both genders. Histomorphologic occurrence of lymph vessels coincided with the presence of endocrine cells with pale-staining cytoplasm, which allowed the assumption that lymph vessels were also one of the signs of functional activity of human parathyroid glands

Reakcija vezivnog tkiva na hrskavične i sintetske implantate u kunića.

In rabbits, the reaction of the surrounding tissue on various implanted biological materials (different types of cartilage), as well as on the synthetic material Silastic®, was examined and evaluated by macroscopic, morphologic and morphometric analysis of the tissue. The implanted materials were studied in order to investigate their potential practical use in reconstructive nasal surgery. The results of macroscopic, histomorphologic and morphometric studies indicate that, for practical use, preference should be given to biological materials rather than to the artificial material, Silastic®.Istraživana je reakcija okolnog tkiva na različite implantirane biološke materijale (različite vrste hrskavice) kao i na sintetički implantat Silastic® u kunića. Ova reakcija je procjenjivana analizom makroskopskih i mikroskopskih promjena te morfometrijskom analizom tkiva. Implantirani materijali su istraživani da bi se utvrdila njihova možebitna praktična primjena u rekonstruktivnoj kirurgiji nosa. Rezultati ovih makroskopskih, histomorfoloških i morfometrijskih istraživanja pokazuju da bi u praktičnoj primjeni trebalo dati prednost biološkim materijalima pred umjetnim Silasticom®