Population Growth of Bosmina longirostris Fed Chlorella vulgaris and Scenedesmus subspicatus in Different Densities

In this study, the effects of the different densities of Chlorella vulgaris (0.05 x 106, 0.1 x 106, 0.2 x 106, 0.4 x 106, or 0.8 x 106 cells/ml) and Scenedesmus subspicatus (0.05 x 106, 0.1 x 106, 0.2 x 106, or 0.4 x 106 cells/ml) on culture of the water flea, Bosmina longirostris, were investigated. The experiment was carried out in a photoperiod of 16 h light:8 h dark at 25±1°C. At the beginning of the experiment, one B. longirostris individual (<24 h old) was put into each vessel, and the number of individuals and rate of population increase were determined for 30 days. Increasing the food density increased the number of individuals and the rate of population. The maximum number of B. longirostris individuals (7.1±2.08 ind/ml) and maximum rate of population increase (0.2±0.004/day) was in the group fed 0.2 x 106 cells/ml S. subspicatus. The effect on the number of the individuals was statistically significant (p<0.05)

Morbid Obez ve Metabolik Sendromlu Çocuklarda Yeni Nesil Enflamatuvar Belirteçlerin Değerlendirilmesi

Aim: Technological advancements, unbalanced nutrition, sedentary life style, are important factors in obesity. Obesity-inflammation relationis beingexamined. In this study, the relationships among new generation inflammatory markers in children with normal body mass index (C) as well as obese (OB), morbid obese (MO) children and those with metabolic syndrome (MetS) were investigated.Materials and Methods: A total of 172 children participated in the study.Group 1 comprised children with normal body-mass index (control group) (C). Obese (OB) children were in Group 2, MO children constituted Group 3 and Group 4 included MO children with MetS. The number of cases were 37, 34, 51 and 50 in groups 1, 2, 3 and 4, respectively. Anthropometric measurements were recorded. Serum spexin, adropin, adipolipin, fibroblast growth factor-21 and fetuin-A levels were determined. Statistical analyses were performed.Result: Spexin and adipolin levels were significantly lower in obese groups than C group (p<0.05). Although adropin and FGF-21 levels did not differ significantly between groups, levels were lower in OB, MO, and MetS groups than C group.There were no significant differences among fetuin- A levels of the groups. Correlations between spexin and adipolin were the highest. These cytokines werenegatively correlated with obesity parameters. The correlations between these cytokines were weakened from C group to MetS group.Conclusion: Decreasing spexin and adipolin levels in accordance with increasing obesity degrees and weakening of the correlation between these cytokines in MO group compared to C group may be helpful during the further investigation of obesity.Amaç: Teknolojideki gelişmeler, dengesiz beslenme, sedanter hayat tarzı gibi yaşam değişiklikleri obezitenin gelişmesi için önemli faktörlerdir. Enflamasyon-obezite ilişkisi güncel bir konu olarak halen incelenmektedir. Bu çalışmada obez (OB), morbid obez (MO), metabolik sendromlu morbid obez (MetS) çocuklar ile sağlıklı, normal vücut kitle indeksi (K) olan çocuklarda yeni nesil enflamatuar belirteçler arasındaki ilişkiler araştırılmıştır. Materyal ve Metot: Toplam 172 çocuk çalışma kapsamına alındı. Normal vücut kitle indeksine sahip çocuklar birinci grubu (kontrol grubu) (K) oluşturdu. Grup 2’de OB, Grup 3’te MO, Grup 4’te MetS’lu (MetS) çocuklar yer aldı. Olgu sayıları Grup 1,2, 3 ve 4 için sırasıyla 37, 34, 51 ve 50 olarak belirlendi. Antropometrik ölçümler alındı. Serum speksin, adropin, adipolin, fibroblast büyüme faktörü-21 ve fetuin-A düzeyleri ölçüldü. İstatistiksel analizler gerçekleştirildi. Bulgular: Speksin ve adipolin düzeyleri obez gruplardaK grubuna göre anlamlı düzeyde düşük bulundu (p<0.05). Adropin ve FGF-21değerlerindegruplar arasında anlamlı bir fark bulunmamasına rağmendüzeylerin, K grubuna göre OB, MO and MetS gruplarında azalmış olduğu saptandı. Fetuin-A düzeylerinde gruplar arasında anlamlı bir farklılık bulunamadı.En yüksek korelasyonlar speksin ve adipolin düzeyleri arasında bulundu. Bu sitokinler obezite parametreleri ile negatif bir ilişki içindeydi. Aynı sitokinler arasındaki ilişki K grubundan MetS grubuna doğru zayıflamakta idi. Sonuç: Artan obezite derecelerine paralel olarak speksin ve adipolin seviyelerindeki azalma ve bu iki parametre arasındaki korelasyonun K grubuna göre MO grupta zayıflaması, obezitenin ileri düzeyde araştırılmasında yardımcı olabileceği düşüncesini ortaya koymaktadır

Incidence and Prognosis of COVID-19 in Patients with Psoriasis: A Multicenter Prospective Study from the Eastern Black Sea Region of Turkey

COVID-19 infection can have a poor prognosis, especial- ly in patients with chronic diseases and those receiving immunosup- pressive or immunomodulating therapies. This study aimed to investigate the severity of COVID-19 infection in patients with psoriasis and compare the infection severity for sys- temic treatments and comorbidities. We conducted a study in the dermatology clinics of five different centers in the Eastern Black Sea region of Turkey. Four hundred and eighty-eight patients were included, and 22.5% were confirmed as having COVID-19 infection. In our study, the frequency of hospitalization rates due to COVID-19 infection were similar (15.4%, 25.9% respectively) in patients receiv- ing biological treatment and receiving non-biological systemic treat- ment (P=0.344). Hospitalization rates were higher in patients with hypertension, androgenetic alopecia, and acitretin use (P=0.043, P=0.028, P=0.040). In conclusion, current biologic treatments and non-biologic system- ic treatments in patients with psoriasis did not appear to increase the risk of the severe form of COVID-19, except for acitretin

Incidence and Prognosis of COVID-19 in Patients with Psoriasis: A Multicenter Prospective Study from the Eastern Black Sea Region of Turkey

COVID-19 infection can have a poor prognosis, especial- ly in patients with chronic diseases and those receiving immunosup- pressive or immunomodulating therapies. This study aimed to investigate the severity of COVID-19 infection in patients with psoriasis and compare the infection severity for sys- temic treatments and comorbidities. We conducted a study in the dermatology clinics of five different centers in the Eastern Black Sea region of Turkey. Four hundred and eighty-eight patients were included, and 22.5% were confirmed as having COVID-19 infection. In our study, the frequency of hospitalization rates due to COVID-19 infection were similar (15.4%, 25.9% respectively) in patients receiv- ing biological treatment and receiving non-biological systemic treat- ment (P=0.344). Hospitalization rates were higher in patients with hypertension, androgenetic alopecia, and acitretin use (P=0.043, P=0.028, P=0.040). In conclusion, current biologic treatments and non-biologic system- ic treatments in patients with psoriasis did not appear to increase the risk of the severe form of COVID-19, except for acitretin

Filtration and ingestion rates of the rotifer Brachionus plicatilis fed five species of microalgae at different cell densities

The microalgae Tetraselmis suecica, Nannochloropsis oculata, Chlorella sp., Isochrysis gal- bana, and Dunaliella tertiolecta were used as food for the rotifer Brachionus plicatilis (L type) raised in laboratory conditions at 25±1oC and 25‰ salinity. Filtration and ingestion rates of the rotifer were determined to study the effects of different microalgae densities and feeding times on the feeding behavior of the starved B. plicatilis. The highest filtration (11.5 x 10-4 ml/ind/min) and ingestion (246.99 x 102 cells/ind/min) rates were obtained with N. oculata. The filtration rates dropped when the microalgae density rose beyond the optimum level, but ingestion rates varied with algae species. Feeding time significantly influenced these rates: after 60 min, both rates dropped

Rotifer (Brachionus plicatilis O. F. müller, 1758) kültürlerindeki bakteriyel floranın kantitatif tayini

ABSTRACT THE QUANTTTATTF DETERMINATION OF BACTERIAL FLORA IN ROTIFER (Brachionus plicatilis O.F.MülIer,1758) CULTURES SAVAŞ Sevgi Ph D Thesis, Aquaculture Dept. Supervisor: Assoc. Prof. Dr. GÖKPTNAR ŞEVKET June 1997, 81 pages In the production of marine fishes, bacterial contamination in the chain of planktonic food is one of the factors affecting the growth and survival of larvae. In this study, aerobik bacterial flora of rotifer and culturing media in different volumes (0,5-2700 liters) were quantitatively investigated. M65 agar, TCBS-Cholera Medium Agar ( Oxoid) and Pseudomonas-CFC- agar were used for counting of total bacteria, Vibrio spp. and Pseudomonas spp. respectively. Protein selco, algae {Isochrysis galbanay Tetraselmis suecica, Nannochloropsis oculata) and yeast cells (Saccharomyces cervisiae) were favored as food stuff for rotifer cultures. The total bacteria concentrations in the starter rotifer cultures which were fed only algal cells were lower than that of the mass cultures ( total bacteria count: 10 ± 0,8 x 104 cfu ml"1; Vibrio spp. count: 57 ± 6 x 103 cfu ml"1 ve Pseudomonos spp. count 94 ± 7,9 x 102 cfu ml"1). These quantites were higher in the rotifera cultures fed algae and yeasts and reach maximum after the protein selco treatment (total bacteria count: 92 ± 24 x 106 cfu ml"1; Vibrio spp. count 20 ± 0,9 x 106 cfu ml"1; Pseudomonos spp. count 25 ± 1,6 x 105 cfu ml"1) Keywords: Brachionus plicatilis, nutrition regimes, total bacteria count, Vibrio spp., Pseudomonos spp.IV ÖZET ROTIFER (Brachionus plicatilis O.F.Müller,1758) KÜLTÜRLERİNDEKİ BAKTERİYEL FLORANIN KANTİTATİF TAYİNİ SAVAŞ, Sevgi Doktora Tezi, Yetiştiricilik Anabilim Dalı Tez Yöneticisi; Doç. Dr. GÖKPINAR, Şevket Haziran 1997, 81 Sayfa Deniz balıkları yetiştiriciliğinde plankton üretim zincirinden gelen bakteriyel bulaşma larvanın büyüme ve yaşama oranını etkileyen faktörlerden biridir. Bu araştırmada üretim zincirinde farklı hacimlerde (0,5 - 2700 L) bulunan rotifer ve kültür ortamlarındaki aerobik bakteriyel flora kantitatif olarak değerlendirilmiştir. Bakteri sayımlarında toplam bakteri M65 agar, Vibrio spp. TCBS - Cholera Medium agar ( Oxoid), Pseudomonos spp. Pseudomonos-CFC- agar ( Oxoid) da yapılmıştır. Rotiferler çeşitli alg türleri (Isochrysis galbana, Tetraselmis suecica, Nannochloropsis oculata), ekmek mayası {Saccharomyces cervisiae) ve protein selco ile beslenmiştir. Sadece alg türleri ile beslenen başlangıç rotifer kültürlerindeki bakteri sayıları (toplam bakteri sayısı 10 ± 0,8 x 104 kob/ml; Vibrio spp. 57 ± 6 x 103 kob/ml ve Pseudomonos spp. sayısı 94 ± 7,9 x 102 kob/ml) yığın kültürlere göre daha düşüktür. Bu sayılar alg ve maya karışımı ile beslenen rotifer kültürlerinde daha yüksektir ve protein selko uygulamasından sonra maksimuma ulaşmaktadır ( Toplam bakteri 92 ± 24 x 106 kob/ml; Vibrio spp. sayısı 20 ± 0,9 x 106 kob/ml; Pseudomonos spp. sayısı 25 ± 1,6 x 105 kob/ml

Effect Of Bacterial Load In Feeds On Intestinal Microflora Of Seabream (Sparus Surata) Larvae And Juveniles

Aerobic bacterial flora in the intestines of seabream (Sparus aurata) larvae and juveniles, in diets they were fed (rotifers, brine shrimp, artificial diet), and in their rearing water were analyzed. Fish fed live feeds had a higher bacterial count than the fish fed the artificial diet. In rotifers, the total bacteria count was 8.7 x 106 and Pseudomonas dominated the flora (60.2%). In larvae fed rotifers, the bacteria count was 9.8 x 102, with Pseudomonas (48.4%) and Vibrio (28.3%) domi- nating. In brine shrimp, the bacterial count was 1.7-3.5 x 107 cfu/g and Vibrio (73.7-81.3%) was more prevalent than Pseudomonas (10.2-15.5%). In larvae fed brine shrimp, the bacterial count was 5.3 x 104-1.8 x 105 and Vibrio (61.2-70.1%) dominated. The count for the artificial feed was 1.2 x 104 with Pseudomonas slightly dominating while for juveniles fed artificial feed the count was 2.3 x 104, with Vibrio slightly dominating. Bacterial microflora in the rearing water ranged from 1.3 x 102 to 3.2 x 103 cfu/ml. The study showed that the microflora of fish feeds quantita- tively and qualitatively affect the intestinal microflora of seabream larvae and juveniles